Petter Nekså
About
Refrigeration and heat pump technology in general · System design for refrigeration; air conditioning and heat pumps · CO2 technology for various applications · Low temperature refrigeration; liquefaction and gas processing (LNG; LH2; LCO2…) · Compressor and heat exchanger technology · Working fluids; with emphasis on natural working fluids · Power cycles for utilisation of low to medium temperature heat · Low temperature processes for CO2 capture; AGR and CCS · Energy systems and energy efficiency related issues in general;
Publications
2023
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Voldsund, Mari;
Reyes Lua, Adriana;
Fu, Chao;
Ditaranto, Mario;
Nekså, Petter;
Mazzetti, Marit Jagtoyen;
Brekke, Olaf;
Bindingsbø, Arne Ulrik;
Grainger, David;
Pettersen, Jostein.
(2023)
Low carbon power generation for offshore oil and gas production.
Energy Conversion and Management: X.
volum 17.
Academic article
2022
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Abdelaziz, Omar;
Carvalho, Suely;
Woodcock, Ashley;
Agyarko, Kofi;
Altoé, Paulo;
Bhambure, Jitendra;
Colbourne, Daniel;
Dohnt, Hilde;
Dreyfus, Gabrielle;
Elassaad, Bassam;
Gluckman, Ray;
Hamed, Samir;
Herlianika, Herlin;
Kujak, Steven;
Kumar, Saurabh;
Li, Tingxun;
Lord, Richard;
Nekså, Petter;
Okada, Tetsuji;
Olama, Mohamed Alaa;
Peixoto, Roberto;
Shah, Nihar;
Rajendran, Rajan;
Rochat, Helene.
(2022)
Montreal protocol on substances that deplete the ozon layer: report of the Technology and Economic Assessment Panel. Volume 3: Decision XXXIII/5 - Continued provision of information on energy-efficient and low-global-warming-potential technologies.
United Nations Environment Programme. 2022. ISBN 978-9966-076-95-3.
Report
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Berstad, David Olsson;
Skaugen, Geir;
Roussanaly, Simon;
Anantharaman, Rahul;
Nekså, Petter;
Jordal, Aina Benedikte Kristin;
Trædal, Stian;
Gundersen, Truls.
(2022)
CO2 Capture from IGCC by Low-Temperature Synthesis Gas Separation.
Energies.
volum 15 (2).
Academic article
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Cely, Alexandra;
Hammer, Morten;
Andersen, Hilde;
Yang, Tao;
Nekså, Petter;
Wilhelmsen, Øivind.
(2022)
Thermodynamic Model Evaluations for Hydrogen Pipeline Transportation.
SPE EuropEC - Europe Energy Conference featured at the 83rd EAGE Annual Conference & Exhibition.
Academic chapter/article/Conference paper
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Ervik, Åsmund;
Saai, Afaf;
Berstad, Torodd;
Meyer, Ole;
Tsuji, Takuma;
Oku, Tatsuya;
Hattori, Kazuhiro;
Yamada, Kazuya;
Delhaye, Virgile Roger;
Nekså, Petter.
(2022)
Coupled fluid-solid modelling of the valve dynamics in reciprocating compressors.
15th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2022 - Proceedings - Trondheim, Norway, June 13-15th 2022.
Academic chapter/article/Conference paper
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Hagen, Brede Andre Larsen;
Andresen, Trond;
Nekså, Petter.
(2022)
Equation-oriented methods for optimizing Rankine cycles using radial inflow turbine.
Energy.
volum 252.
Academic article
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Nekså, Petter.
(2022)
Bør jeg kjøpe varmepumpe? Vil det lønne seg?.
Website (informational material)
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Nekså, Petter.
(2022)
Vis oss varmepumpa di, så skal vi si om du bruker den rett.
Adresseavisen.
Feature article
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Perez Clos, Daniel;
Zedel, Hannes;
Johnsen, Sverre Gullikstad;
Nekså, Petter;
Aune, Ragnhild Elizabeth.
(2022)
Composition and Structure Analysis of Hard Grey Scale (HGS) Formed on Cold Surfaces Exposed to Aluminium Production Off-gas.
JOM.
volum 74 (9).
Academic article
-
Røkke, Petter Egil;
Kauko, Hanne;
Nekså, Petter.
(2022)
Industrial neighbours can share excess energy.
Website (informational material)
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Shahrooz, Mina;
Lundqvist, Per;
Nekså, Petter.
(2022)
Performance of binary zeotropic mixtures in organic Rankine cycles (ORCs).
Energy Conversion and Management.
volum 266.
Academic article
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Yamaguchi, H.;
Ishikawa, Yuki;
Yamasaki, Hiroshi;
Kamimura, Takeshi;
Hattori, K;
Nekså, Petter.
(2022)
Ultra-low temperature refrigeration system of CO2 using cyclone separator/evaporator.
15th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2022 - Proceedings - Trondheim, Norway, June 13-15th 2022.
Academic chapter/article/Conference paper
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Yamasaki, Haruhiko;
Wakimoto, Hiroyuki;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter;
Yamaguchi, Hiroshi.
(2022)
Visualization and Measurement of Swirling Flow of Dry Ice Particles in Cyclone Separator-Sublimator.
Energies.
volum 15 (11).
Academic article
2021
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Abdelaziz, Omar;
Elassaad, Bassam;
Bhambure, Jitendra;
Kuijpers, Lambert J.M.;
Nekså, Petter;
Pachai, Alexander C.;
Peixoto, Roberto;
Polonara, Fabio;
Rajendran, N..
(2021)
Montreal Protocol on Substances that Deplete the Ozone Layer : Report of the Refrigeration Technical Options Committee Vaccines Cold Chain Subcommittee Addendum to the TEAP 2021 Progress Report.
United Nations Environment Programme. 2021. ISBN 978-9966-076-90-8.
Report
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Berstad, David Olsson;
Gardarsdottir, Stefania Osk;
Roussanaly, Simon;
Voldsund, Mari;
Ishimoto, Yuki;
Nekså, Petter.
(2021)
Liquid hydrogen as prospective energy carrier: A brief review and discussion of underlying assumptions applied in value chain analysis.
Renewable & Sustainable Energy Reviews.
volum 154.
Academic article
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Clos, Daniel Perez;
Zedel, Hannes;
Johnsen, Sverre Gullikstad;
Nekså, Petter;
Aune, Ragnhild Elizabeth.
(2021)
Particle deposition characteristics in the formation of Hard Grey Scale (HGS) on cold surfaces exposed to aluminium production off-gas.
Journal of Aerosol Science.
volum 161.
Academic article
-
Ervik, Åsmund;
Saai, Afaf;
Berstad, Torodd;
Meyer, Ole;
Tsuji, Takuma;
Oku, Tatsuya;
Hattori, Kazuhiro;
Yamada, Kazuya;
Delhaye, Virgile Roger;
Nekså, Petter.
(2021)
Modelling the dynamics of ring plate valves in reciprocating compressors using coupled CFD-FEM simulations.
10th IIR Conference on Compressors and Refrigerants.
Academic chapter/article/Conference paper
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Gardarsdottir, Stefania Osk;
Nekså, Petter.
(2021)
Assumptions Matter When Assessing Blue & Green Hydrogen.
Website (informational material)
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Hagen, Brede;
Agromayor, Roberto;
Nekså, Petter.
(2021)
Equation-oriented methods for design optimization and performance analysis of radial inflow turbines.
Energy.
volum 237.
Academic article
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Røkke, Petter Egil;
Kauko, Hanne;
Nekså, Petter.
(2021)
Industrinaboer kan dele overskuddsenergi.
Website (informational material)
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Røkke, Petter Egil;
Nekså, Petter.
(2021)
Episode 393 – Om varmetap med Petter Røkke og Petter Nekså.
Teknisk ukeblad. 2021.
Sound material
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Singh, Simarpreet;
Hafner, Armin;
Maiya, M.P.;
Banasiak, Krzysztof;
Nekså, Petter.
(2021)
Multiejector CO2 cooling system with evaporative gascooler for a supermarket application in tropical regions.
Applied Thermal Engineering.
volum 190.
Academic article
2020
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Andresen, Trond;
Lingaas, Simon Johan Nilsen;
Hagen, Brede;
Nekså, Petter.
(2020)
Dynamic Analysis of Energy Recovery Utilizing Thermal Storage from Batch-Wise Metal Casting.
IIR Rankine Conference 2020.
Academic chapter/article/Conference paper
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Clos, Daniel Perez;
Johnsen, Sverre Gullikstad;
Nekså, Petter;
Aune, Ragnhild Elizabeth.
(2020)
The Effect of Hard Scale Deposition on the Wall Heat Flux of a Cold Finger.
Light Metals 2020.
Academic chapter/article/Conference paper
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Dasi, Koti;
Singh, Simarpreet;
Guruchethan, A.M.;
Maiya, M.P.;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2020)
Performance Evaluation of Ejector Based CO₂ System for Simultaneous Heating and Cooling Application in an Indian Dairy Industry.
Thermal Science and Engineering Progress.
volum 20.
Academic article
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Hagen, Brede;
Cavo, Matteo;
Andresen, Trond;
Nekså, Petter.
(2020)
Gradient Based Design Optimization of a Radial Inflow Turbine.
IIR Rankine Conference 2020.
Academic chapter/article/Conference paper
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Ishimoto, Yuki;
Voldsund, Mari;
Nekså, Petter;
Roussanaly, Simon;
Berstad, David Olsson;
Gardarsdottir, Stefania Osk.
(2020)
Large-scale production and transport of hydrogen from Norway to Europe and Japan: Value chain analysis and comparison of liquid hydrogen and ammonia as energy carriers.
International Journal of Hydrogen Energy.
volum 45 (58).
Academic article
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Nekså, Petter.
(2020)
How CO2 Can Help The Climate.
SINTEF Energi AS. 2020.
Multimedia product
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Nekså, Petter.
(2020)
Hydrogen can contribute to decarbonizing the European energy system.
SINTEF Energi. 2020.
Multimedia product
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Nekså, Petter.
(2020)
Norsk teknologi kan kutte 0,5 grader global oppvarming!.
SINTEF Energi. 2020.
Multimedia product
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Shahrooz, Mina;
Lundqvist, Per;
Nekså, Petter.
(2020)
Effect of Waste Heat Utilization on the Performance of Low Temperature Rankine Cycle.
IIR Rankine Conference 2020.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Maiya, Prakash;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2020)
Energy efficient multiejector CO2 cooling system for high ambient temperature.
Thermal Science and Engineering Progress.
volum 19.
Academic article
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Skjervold, Vidar T.;
Skaugen, Geir;
Andresen, Trond;
Nekså, Petter.
(2020)
Enabling Power Production from Challenging Industrial Off-Gas – Model-Based Investigation of a Novel Heat Recovery Concept.
IIR Rankine Conference 2020.
Academic chapter/article/Conference paper
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Tazawa, Taluya;
Yoshida, S;
Yamasaki, Haruhiko;
Wakimoto, Hiroyuki;
Yamaguchi, Hiroshi;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter.
(2020)
Thermal Characteristics in Supercritical CO2 Along Heating Tube.
Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020.
Academic chapter/article/Conference paper
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Wakimoto, Hiroko;
Uchi, K.;
Yamasaki, Haruhiko;
Yamaguchi, Hiroshi;
Kamimura, Takeshi;
Hattori, Kazuyuki;
Nekså, Petter.
(2020)
Basic performance of CO2 cyclone refrigeration system.
Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020.
Academic chapter/article/Conference paper
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Wakimoto, Hiroyuki;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter;
Yamaguchi, Hiroshi.
(2020)
Dry-ice collection performance and collection mechanism of cyclone separator-evaporator.
33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020).
Academic article
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Yamasaki, Haruhiko;
Kizilkan, Ônder;
Yamaguchi, Hiroshi;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter.
(2020)
Experimental investigation of dry ice cyclone separator for ultra‐low temperature energy storage using carbon dioxide.
Energy Storage.
volum 2 (4).
Academic article
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Yamasaki, Haruhiko;
Wakimoto, Hiroyuki;
Yamaguchi, Hiroshi;
Nekså, Petter.
(2020)
Solar heat recovery system using CO2 as working fluid.
Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020.
Academic chapter/article/Conference paper
-
Yamasaki, Haruhiko;
Yamaguchi, Hiroshi;
Kizilkan, Ônder;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter.
(2020)
Experimental investigation of the effect of solid-gas two-phase flow in CO2 cascade refrigeration system.
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects.
Academic article
2019
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Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2019)
Experimental investigation of a prototype R-600 compressor for high temperature heat pump.
Energy.
volum 169.
Academic article
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Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2019)
The development of a hydrocarbon high temperature heat pump for waste heat recovery.
Energy.
volum 173.
Academic article
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Banasiak, Krzysztof;
Singh, Simarpreet;
Hafner, Armin;
Maiya, Prakash;
Nekså, Petter;
Pardiñas, Ángel Á..
(2019)
Experimental investigation of CO2 systems for Indian supermarkets with parallel configuration of multiejectors (INDEE).
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
-
Clos, Daniel Perez;
Nekså, Petter;
Johnsen, Sverre Gullikstad;
Aune, Ragnhild Elizabeth.
(2019)
Investigation on scale formation in aluminium industry by means of a cold-finger.
The Minerals, Metals & Materials Series.
Academic article
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Jin, Zhequan;
Hafner, Armin;
Eikevik, Trygve Magne;
Nekså, Petter.
(2019)
Preliminary study on CO2 transcritical ejector enhanced compressor refrigeration system for independent space cooling and dehumidification.
International journal of refrigeration.
volum 100.
Academic article
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Kumar, Kundan;
Singh, Simarpreet;
Kumar, Pramod;
Maiya, M.P.;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2019)
Experimental analysis of transcritical CO2 booster refrigeration system with heat recovery and ejector expansion.
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian;
Bamigbetan, Opeyemi Olayinka.
(2019)
High temperature industrial heat pumps utilising natural working fluids.
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Røkke, Petter Egil.
(2019)
Energibruk og utslipp i industrien: Den billigste kilowatttimen.
Det Nye Digitale Norge.
publications.POPVIT_KAPITTEL
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Schlemminger, Christian;
Svendsen, Eirik Starheim;
Foslie, Sverre Stefanussen;
Bantle, Michael;
Bamigbetan, Opeyemi Olayinka;
Nekså, Petter.
(2019)
Performance of high temperature heat pump for simultaneous and efficient production of ice water and process heat.
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
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Sharooz, Mina;
Lindqvist, Per;
Nekså, Petter.
(2019)
Effect of Working Fluid Type on Low Temperature Rankine Cycle Optimization.
Proceedings of the 5th International Seminar on ORC Power Systems.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Hafner, Armin;
Banasiak, Krzysztof;
Maiya, Prakash;
Nekså, Petter.
(2019)
Experimental Evaluation of a Multi-Ejector Trans-critical CO2 System for Supermarkets.
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
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Tomasgard, Asgeir;
Berstad, David Olsson;
Blekkan, Edd Anders;
Karstad, Per Ivar;
Burheim, Odne Stokke;
Dawson, James;
Espegren, Kari Aamodt;
Løvås, Terese;
Meyer, Julien;
Møller-Holst, Steffen;
Nekså, Petter;
Pollet, Bruno;
Størset, Sigmund Østtveit;
Sundseth, Kyrre;
Thomassen, Magnus;
Ulleberg, Øystein.
(2019)
Hydrogen i fremtidens lavkarbonsamfunn.
2019. ISBN 978-82-93198-31-4.
Report
2018
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Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2018)
Experimental investigation of the performance of a hydrocarbon heat pump for high temperature industrial heating.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2018)
Theoretical analysis for charge reduction in a 200 kW hydrocarbon hight temperature heat pump.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2018)
Theoretical analysis of suitable fluids for high temperature heat pumps up to 125 °C heat delivery.
International journal of refrigeration.
volum 92.
Academic article
-
Berstad, David Olsson;
Nekså, Petter.
(2018)
Ambisiøse planer for hydrogen i Japan.
Website (informational material)
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Blust, Stefanie;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2018)
Possible configurations of multiejector driven CO2 systems for Indian supermarkets.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Blust, Stefanie;
Singh, Simarpreet;
Banasiak, Krzysztof;
Nekså, Petter.
(2018)
Environment-friendly refrigeration packs for Indian supermarkets: experimental investigation of energy performance of a multiejector-driven R744 integrated compressor rack.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
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Dieryckx, Martin;
Chen, Guangming;
Gluckman, Ray;
Nekså, Petter;
Okada, Tetsuji.
(2018)
Water and space heating heat pumps.
Montreal Protocol on Substances that Deplete the Ozone Layer : 2018 report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee.
Chapter
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Dorman, Dennis;
Calm, James M.;
Dieryckx, Martin;
Hamed, Samir;
Pachai, Alex;
Rusignuolo, Gorgio;
Nekså, Petter;
Hickman, Kenneth E..
(2018)
Chillers.
Montreal Protocol on Substances that Deplete the Ozone Layer : 2018 report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee.
Chapter
-
Ervik, Åsmund;
Saai, Afaf;
Meyer, Ole;
Nekså, Petter.
(2018)
Modelling of mechanical and flow processes in compressors.
2018.
Report
-
Hafner, Armin;
Nekså, Petter.
(2018)
Integrated CO2 solutions for supermarkets.
Science et technique du froid.
volum 2018-June.
Academic article
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep1: Utnytte industriell overskuddsvarme.
SINTEF Energi, Facebook. 2018.
Multimedia product
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Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep1: Utnytte industriell overskuddsvarme.
SINTEF Energi. 2018.
Multimedia product
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Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep2: Hvor bruker man arbeidsmedier?.
SINTEF Energi. 2018.
Multimedia product
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Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep2: Hvor bruker man arbeidsmedier?.
SINTEF Energi. 2018.
Multimedia product
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Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep3: Er kunstige arbeidsmedier egentlig så farlige?.
SINTEF Energi, Facebook. 2018.
Multimedia product
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Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep3: Er kunstige arbeidsmedier egentlig så farlige?.
SINTEF Energi. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep4: CO2 som arbeidsmedium.
SINTEF Energi, Facebook. 2018.
Multimedia product
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Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep4: CO2 som kuldemedium.
SINTEF Energi. 2018.
Multimedia product
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Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep5: Arbeidsmedier og overskuddsvarme.
SINTEF Energi. 2018.
Multimedia product
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Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep5: Konvertering av overskuddsvarme.
SINTEF Energi, Facebook. 2018.
Multimedia product
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Nekså, Petter;
Berstad, David Olsson;
Størset, Sigmund Østtveit.
(2018)
Fossil lhjelp til grønt skifte.
Dagens næringsliv.
Feature article
-
Rajendran, Rajan;
Janssen, Martien;
Kauffeld, Michael;
Lal, D. Mohan;
Nekså, Petter;
Pedersen, Per-Henrik;
Motta, Samuel Yana.
(2018)
Commercial refrigeration.
Montreal Protocol on Substances that Deplete the Ozone Layer : 2018 report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee.
Chapter
-
Shahrooz, Mina;
Lundqvist, Per;
Nekså, Petter.
(2018)
Natural refrigerants for low temperature power cycles.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Banasiak, Krzysztof;
Hafner, Armin;
Maiya, M.P.;
Nekså, Petter.
(2018)
Performance evaluation of CO2 ejector system with parallel compressor for supermarket application.
17th International Refrigeration and Air Conditioning Conference 2018.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Hafner, Armin;
Banasiak, Krzysztof;
Maiya, Prakash M.;
Nekså, Petter.
(2018)
Experimental evaluation of multi-ejector based CO2 cooling system for supermarkets in tropical zones.
17th International Refrigeration and Air Conditioning Conference 2018.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Maiya, M.P.;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2018)
CO2 refrigeration system for high ambient temperatures.
Air Conditioning and Refrigeration Journal.
volum 21 (5).
Article
-
Singh, Simarpreet;
Reddy, Amshith;
Parkash, Maiya M.;
Banasiak, Krzysztof;
Hafner, Armin;
Nekså, Petter.
(2018)
Analysis of R744 refrigeration system with liquid ejectors.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Reddy, Amshith;
Prakash, Maiya P.;
Banasiak, Krzysztof;
Hafner, Armin;
Nekså, Petter.
(2018)
Performance investigation of a multi-ejector R744 heat pump.
Science et technique du froid.
volum 2018-June.
Academic article
-
Wilhelmsen, Øivind;
Berstad, David Olsson;
Aasen, Ailo;
Nekså, Petter;
Skaugen, Geir.
(2018)
Reducing the exergy destruction in the cryogenic heat exchangers of hydrogen liquefaction processes.
International Journal of Hydrogen Energy.
volum 43 (10).
Academic article
2017
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Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael.
(2017)
Extending ammonia high temperature heat pump using butane in a cascade system.
7th Conference on Ammonia and CO2 Refrigeration Technology, Ohrid, Macedonia, May 11-13, 2017.
Academic chapter/article/Conference paper
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael.
(2017)
Review of Vapour Compression Heat Pumps for High Temperature Heating using Natural Working Fluids.
International journal of refrigeration.
volum 80.
Academic literature review
-
Berstad, David Olsson;
Wilhelmsen, Øivind;
Skjervold, Vidar T.;
Nekså, Petter.
(2017)
Cryogenic CO2 condensation and membrane separation of syngas for large-scale LH2 production.
Cryogenics 2017 : Proceedings of the 14th IIR International Conference, Dresden, Germany, Mai 15-19, 2017..
Academic chapter/article/Conference paper
-
Clos, Daniel Perez;
Andresen, Trond;
Nekså, Petter;
Johnsen, Sverre Gullikstad;
Aune, Ragnhild Elizabeth.
(2017)
Enabling Efficient Heat Recovery from Aluminium Pot Gas.
Light metals 2017.
Academic chapter/article/Conference paper
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin.
(2017)
A steady and quasi-steady state analysis on the CO2 hybrid ground-coupled heat pumping system.
International journal of refrigeration.
volum 76.
Academic article
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Wang, Ruzhu.
(2017)
Annual energy performance of R744 and R410A heat pumping systems.
Applied Thermal Engineering.
volum 117.
Academic article
-
Kauko, Hanne;
Nordtvedt, Stein Rune;
Nekså, Petter;
Bantle, Michael.
(2017)
High-temperature heat pumps based on natural working fluids to produce district heating from industrial waste heat.
7th Conference on Ammonia and CO2 Refrigeration Technology, Ohrid, Macedonia, May 11-13, 2017.
Academic chapter/article/Conference paper
-
Nekså, Petter.
(2017)
FN-møte i Jordan for å fase ut klimagasser.
Website (informational material)
-
Wilhelmsen, Øivind;
Skaugen, Geir;
Berstad, David Olsson;
Aasen, Ailo;
Nekså, Petter.
(2017)
Understanding the physical phenomena that occur inside heat exchangers for liquefaction of hydrogen.
Cryogenics 2017 : Proceedings of the 14th IIR International Conference, Dresden, Germany, Mai 15-19, 2017..
Academic chapter/article/Conference paper
-
Yamasaki, Haruhiko;
Yamaguchi, Hiroshi;
Hattori, Kazuyuki;
Nekså, Petter.
(2017)
Experimental Observation of CO2 Dry-ice Behavior in an Evaporator/Sublimator.
Energy Procedia.
volum 143.
Academic article
2016
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael.
(2016)
Evaluation of Natural working fluids for the Development of high temperature heat pumps.
12th IIR Gustav Lorentzen Conference on Natural Refrigerants GL2016 : Proceedings.
Academic chapter/article/Conference paper
-
Haukås, Hans T.;
Stene, Jørn;
Rekstad, Inge Håvard;
Nekså, Petter;
Hafner, Armin;
Eikevik, Trygve Magne.
(2016)
CO2 (R744) som kuldemedium.
2016.
Compendium
-
Hemmingsen, Anne Karin;
Nekså, Petter.
(2016)
Spillvarme inn i varmen.
Gemini.
Feature article
-
Hemmingsen, Anne Karin;
Nekså, Petter.
(2016)
Spillvarme inn i varmen.
Dagens næringsliv.
Feature article
-
Hu, Haitao;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Ding, Guoliang;
Huang, Qingnan;
Ye, Jingjing.
(2016)
Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers.
International journal of refrigeration.
volum 63.
Academic article
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin.
(2016)
Investigation on CO2 hybrid ground-coupled heat pumping system under warm climate.
International journal of refrigeration.
volum 62.
Academic article
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Wang, Ruzhu.
(2016)
Energy efficiency comparison of heat pumping systems using R744 and R410A as refrigerant.
12th IIR Gustav Lorentzen Conference on Natural Refrigerants GL2016 : Proceedings.
Academic chapter/article/Conference paper
-
Nekså, Petter.
(2016)
What is the role for gas in the future?.
Website (informational material)
-
Nekså, Petter;
Hafner, Armin;
Bredesen, Arne Mathias;
Eikevik, Trygve Magne.
(2016)
CO2 as working fluid - technological development on the road to sustainable refrigeration.
12th IIR Gustav Lorentzen Conference on Natural Refrigerants GL2016 : Proceedings.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Hemmingsen, Anne Karin Torstveit.
(2016)
CO2 gir grønn kjøling.
Dagens næringsliv.
Feature article
2015
-
Berstad, David Olsson;
Nekså, Petter.
(2015)
Flytende vind og gass til Japan?.
Dagens næringsliv.
Feature article
-
Clodic, Denis;
Janssen, Martien;
Kauffeld, Michael;
Nekså, Petter;
Pedersen, Per-Henrik;
Silva, Alessandro;
Rajandran, Rajan.
(2015)
Commercial refrigeration.
Montreal protocol on substances that deplete the ozone layer : UNEP 2014 Report on the refrigeration, air conditioning and heat pumps Technical Options Committee : 2014 assessment.
Academic chapter/article/Conference paper
-
Dieryckx, Martin;
Chen, Guangming;
Grozdek, Marino;
Kaibara, Makoto;
Nekså, Petter;
Okada, Tetsuji.
(2015)
Water heating heat pumps.
Montreal protocol on substances that deplete the ozone layer : UNEP 2014 Report on the refrigeration, air conditioning and heat pumps Technical Options Committee : 2014 assessment.
Academic chapter/article/Conference paper
-
DiRenzo, Joseph;
Nekså, Petter;
Kolsaker, Kjell.
(2015)
Analysis of Natural Gas engine de-loading on LNG fuelled vessels.
Energy Procedia.
volum 64 (C).
Academic article
-
Fidorra, N;
Hafner, Armin;
Nekså, Petter;
Köhler, Jürgen.
(2015)
Energy cost analysis of heat recovery in CO2 supermarket refrigeration systems.
Ammonia and CO2 Refrigeration Technologies - Ohrid, Macedonia April 16-18, 2015 - Proceedings.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter.
(2015)
Il futoro del CO2 : confronto di diverse configurazioni di un sistema ad R744 per supermercati nei paesi piu caldi.
Industria & formazione.
Article
-
Hafner, Armin;
Nekså, Petter.
(2015)
System configurations for supermarkets in warm climates applying R744 refrigeration technologies - case studies of selected cities.
16th European Conference - Latest technologies in refrigeration and air conditioning, Milano 12th-13th June 2015 - Expo 2015.
Chapter
-
Iwamoto, Yuhiro;
Yamasaki, Haruhiko;
Niu, Xiao-Dong;
Nekså, Petter;
Yamaguchi, Hiroshi.
(2015)
Experimental study on system performance of ultra-low temperature cascade refrigeration system using Carbon Dioxide with tapered evaporator/sublimator.
Proceedings of the 24th International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Ding, Guoliang.
(2015)
ENERGY PERFORMANCE OF CO2 HYBRID GROUND-COUPLED HEAT PUMPING SYSTEM FOR HOTEL APPLICATION.
Proceedings of the 24th International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Jordal, Kristin;
Anantharaman, Rahul;
Peters, Thijs;
Berstad, David Olsson;
Morud, John Christian;
Nekså, Petter;
Bredesen, Rune.
(2015)
High-purity H2 production with CO2 capture based on coal gasification.
Energy.
volum 88.
Academic article
-
Jordal, Kristin;
Berstad, David Olsson;
Nekså, Petter.
(2015)
Hydrogen cars: The role of fossil fuels and CCS in a cleaner transport system.
Website (informational material)
-
Jordal, Kristin;
Berstad, David Olsson;
Nekså, Petter.
(2015)
The role of fossil fuels and CCS in a cleaner transport system.
Website (informational material)
-
Nekså, Petter.
(2015)
Energisk mellom Japan og Norge.
Briefs
-
Nekså, Petter.
(2015)
Preface.
Energy Procedia.
volum 64 (C).
Editorial
-
Nekså, Petter;
Dieryckx, Martin;
Chen, Guangming;
Grozdek, Marino;
kaibara, Makoto;
Okada, Tetsuji.
(2015)
Water Heating Heat Pumps.
2014 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
Janssen, Martien;
Kauffeld, Michael;
Pedersen, Per-Henrik;
Silva, Alessandro;
Rajandran, Rajan.
(2015)
Commercial Refrigeration.
2014 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
2014
-
Berstad, David Olsson;
Roussanaly, Simon;
Skaugen, Geir;
Anantharaman, Rahul;
Nekså, Petter;
Jordal, Kristin.
(2014)
Energy and Cost Evaluation of A Low-temperature CO2 Capture Unit for IGCC plants.
Energy Procedia.
volum 63.
Academic article
-
Hafner, Armin;
Hemmingsen, Anne Karin;
Nekså, Petter.
(2014)
System configuration for supermarkets in warm climates applying R744 refrigeration technologies - case study of selected chinese cities.
Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter.
(2014)
System configurations for supermarkets i warm climates applying R744 refrigeration technologies - case study of selected cities.
Industria & formazione.
Popular scientific article
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Ding, G.;
Hu, Haitao.
(2014)
Transient simulation of R744 hybrid ground coupled heat pump with modelica.
Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014.
Academic chapter/article/Conference paper
-
Mazzetti, Marit Jagtoyen;
Ladam, Yves;
Walnum, Harald Taxt;
Hagen, Brede Andre Larsen;
Skaugen, Geir;
Nekså, Petter.
(2014)
Flexible Combined Heat and Power Systems for Offshore Oil and Gas Facilities With CO2 Bottoming Cycles.
ASME 2014 Power Conference - POWER 2014 - Volume 2.
Academic chapter/article/Conference paper
-
Mazzetti, Marit Jagtoyen;
Nekså, Petter;
Walnum, Harald Taxt;
Hemmingsen, Anne Karin.
(2014)
Energy-Efficient Technologies for Reduction of Offshore CO2 Emissions.
Oil and Gas Facilities.
volum 3 (1).
Academic literature review
-
Nekså, Petter.
(2014)
Carbon dioxide applications.
CO2 as a refrigerant.
Academic chapter/article/Conference paper
-
Skaugen, Geir;
Walnum, Harald Taxt;
Hagen, Brede Andre Larsen;
Clos, Daniel Perez;
Mazzetti, Marit Jagtoyen;
Nekså, Petter.
(2014)
Design and optimization of waste heat recovery unit using carbon dioxide as cooling fluid.
ASME 2014 Power Conference - POWER 2014 - volume 1.
Academic chapter/article/Conference paper
-
Yamaguchi, H.;
Iwamoto, Y;
Ozaki, S;
Nekså, Petter.
(2014)
Experimental observation of sedimentation phenomena of CO2 dry ice in model channel.
Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014.
Academic chapter/article/Conference paper
-
Ye, Jingjing;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Ding, G.;
Hu, H..
(2014)
Performance and economy analysis of a solar assisted CO2 ground source heat pump with air-cooled gas cooler under different climate conditions.
Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014.
Academic chapter/article/Conference paper
2013
-
Berstad, David Olsson;
Anantharaman, Rahul;
Nekså, Petter.
(2013)
Integrated Low-temperature CO2 Capture from IGCC Power Plant by Partial Condensation and Separation of Syngas.
Chemical Engineering Transactions.
Academic article
-
Berstad, David Olsson;
Anantharaman, Rahul;
Nekså, Petter.
(2013)
Low-temperature CCS from an IGCC Power Plant and Comparison with Physical Solvents.
Energy Procedia.
volum 37.
Academic article
-
Berstad, David Olsson;
Anantharaman, Rahul;
Nekså, Petter.
(2013)
Low-temperature CO2 capture technologies - Applications and potential.
International journal of refrigeration.
volum 36 (5).
Academic literature review
-
Hafner, Armin;
Justo Alonso, Maria;
Schmälzle, Christian;
Nekså, Petter.
(2013)
High efficient 18-90 m3/h R744 compressor.
Compressors 2013 : 8th International Conference on Compressors and Coolants.
Academic chapter/article/Conference paper
-
Kus, Bartosz;
Nekså, Petter.
(2013)
Development of one-dimensional model for initial design and evaluation of oil-free CO2 turbo-compressor.
International journal of refrigeration.
volum 36 (8).
Academic article
-
Kus, Bartosz;
Nekså, Petter.
(2013)
Novel partial admission radial compressor for CO2 applications.
International journal of refrigeration.
volum 36 (8).
Academic article
-
Kus, Bartosz;
Nekså, Petter.
(2013)
Oil free turbo-compressors for CO2 refrigeration applications.
International journal of refrigeration.
volum 36 (5).
Academic article
-
Mazzetti, Marit Jagtoyen;
Nekså, Petter;
Walnum, Harald Taxt;
Hemmingsen, Anne Karin.
(2013)
Novel energy efficiency technologies for reduction of offshore CO2 emissions.
Offshore Technology Conference.
Academic chapter/article/Conference paper
-
Rohde, Daniel;
Walnum, Harald Taxt;
Andresen, Trond;
Nekså, Petter.
(2013)
Heat recovery from export gas compression: Analyzing power cycles with detailed heat exchanger models.
Applied Thermal Engineering.
volum 60 (1-2).
Academic article
-
Walnum, Harald Taxt;
Nekså, Petter;
Nord, Lars Olof;
Andresen, Trond.
(2013)
Modelling and simulation of CO2 (carbon dioxide) bottoming cycles for offshore oil and gas installations at design and off-design conditions.
Energy.
volum 59.
Academic article
2012
-
Berstad, David Olsson;
Nekså, Petter;
Anantharaman, Rahul.
(2012)
Low-temperature CO2 Removal from Natural Gas.
Energy Procedia.
volum 26.
Academic article
-
Hafner, Armin;
Poppi, Stefano;
Nekså, Petter;
Minetto, Silvia;
Eikevik, Trygve Magne.
(2012)
Development of Commersial Refrigeration Systems with Heat Recovery for Supermaket Buildings.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Schmälzle, Christian;
Nekså, Petter;
Obrist, Frank;
Rekstad, Inge Håvard.
(2012)
High efficient 100 kW elR744 compressor.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Kus, Bartosz;
Nekså, Petter.
(2012)
Oil Free Turbo-Compressors For Refrigeration Applications.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Mazzetti, Marit Jagtoyen;
Nekså, Petter.
(2012)
Tapt kraft til Nytte.
Dagens næringsliv.
volum 123 (281).
Feature article
-
Quack, Hans;
Essler, Jürgen;
Haberstroh, Christoph;
Walnum, Harald Taxt;
Berstad, David Olsson;
Drescher, Michael;
Nekså, Petter.
(2012)
Search for the Best Processes to Liquefy Hydrogen in Very Large Plants.
Proceedings : the 12th Cryogenics 2012 IIR International Conference, Dresden, Germany, September 11-14, 2012.
Academic chapter/article/Conference paper
-
Rohde, Daniel;
Ladam, Yves;
Walnum, Harald Taxt;
Nekså, Petter.
(2012)
Heat pumps for steam production from waste heat.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Titze, Maren;
Lemke, Nicholas;
Nekså, Petter;
Hafner, Armin;
Köhler, Jürgen.
(2012)
Dynamic modeling of a combined supermarket refrigeration and HVAC system.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Walnum, Harald Taxt;
Berstad, David Olsson;
Drescher, Michael;
Nekså, Petter;
Quack, Hans;
Haberstroh, Christoph;
Essler, Jürgen.
(2012)
Principles for the Liquefaction of Hydrogen with Emphasis on Precooling Processes.
Proceedings : the 12th Cryogenics 2012 IIR International Conference, Dresden, Germany, September 11-14, 2012.
Academic chapter/article/Conference paper
2011
-
Berstad, David Olsson;
Anantharaman, Rahul;
Nekså, Petter.
(2011)
Potential for low-temperature concepts in different CCS applications.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Berstad, David Olsson;
Nekså, Petter;
Anantharaman, Rahul.
(2011)
Low-temperature syngas separation for CO2 capture from an IGCC power plant.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Berstad, David Olsson;
Nekså, Petter;
Reigstad, Gunhild Allard.
(2011)
Low-temperature syngas separation and CO2 capture for enhanced efficiency of IGCC power plants.
Energy Procedia.
volum 4.
Academic article
-
Hafner, Armin;
Nekså, Petter;
Ladam, Yves;
Eikevik, Trygve Magne.
(2011)
OIL-FREE R744 SYSTEMS FOR INDUSTRIAL/COMMERCIAL APPLICATIONS.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter;
Ladam, Yves;
Eikevik, Trygve Magne.
(2011)
Oljefrie CO2 systemer for industrielle og kommersielle anvendelser.
Kulde.
Academic article
-
Krasae-in, Songwut;
Bredesen, Arne Mathias;
Stang, Hans Georg Jacob;
Nekså, Petter.
(2011)
Simulation and experiment of a hydrogen liquefaction test rig using a multi-component refrigerant refrigeration system.
International Journal of Hydrogen Energy.
volum 36 (1).
Academic article
-
Nekså, Petter;
Berstad, David Olsson;
Anantharaman, Rahul.
(2011)
Overview of current and possible applications for refrigeration technologies within CCS.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Čermák, Radim;
Kauffeld, Michael;
Pachai, Alexander C.;
Wild, Yves;
Cavalier, Gerald;
Xie, Ruhe;
Colborne, Daniel.
(2011)
Transport Refrigeration.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
Clodic, Denis;
Kauffeld, Michael;
Pedersen, Per-Henrik;
Peixoto, Roberto.
(2011)
Commercial Refrigeration.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
Hickman, Kenneth E.;
Calm, James M.;
Chen, Guangming;
Crawford, Jim;
Dorman, Dennis;
Pachai, Alexander C.;
Pearson, Andy;
Colbourne, Daniel;
Ohtsuki, Akira.
(2011)
Chillers.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
kaibara, Makoto;
Dieryckx, Martin;
Keller, Fred J.;
Calm, James M.;
Colbourne, Daniel;
Pachai, Alexander C.;
Hickman, Kenneth E.;
Nordman, Roger.
(2011)
Heat Pumps.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
Keller, Fred J.;
Colbourne, Daniel;
Devotta, Sukumar;
Agarwal, Radhey;
Crawford, Jim;
Dieryckx, Martin;
kaibara, Makoto;
McInerney, Ed;
Nelson, Horace A.;
Vodianitskaia, Paulo.
(2011)
Air-to-Air Air Conditioners and Heat Pumps.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Niu, Xiao-Dong;
Yamaguchi, Hiroshi;
Iwamoto, Yuhiro;
Nekså, Petter.
(2011)
Experimental study on a CO2-solid-gas-flow-based ultra-low temperature cascade refrigeration system.
International Journal of Low-Carbon Technologies.
volum 6 (2).
Academic article
-
Tangen, Grethe;
Hemmingsen, Anne Karin;
Lorentsen, Odd-Arne;
Nekså, Petter.
(2011)
Energy efficiency in industry - a main path for increased value creation and sustainable energy use.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Tangen, Grethe;
Hemmingsen, Anne Karin;
Nekså, Petter.
(2011)
CREATIV: Research-based innovation for industry energy efficiency.
Applied Thermal Engineering.
volum 31 (17-18).
Academic article
-
Walnum, Harald Taxt;
Ladam, Yves;
Nekså, Petter;
Andresen, Trond.
(2011)
Off-design operation of ORC and CO2 power production cycles for low temperature surplus heat recovery.
International Journal of Low-Carbon Technologies.
volum 6 (2).
Academic article
-
Yamaguchi, Hiroshi;
Niu, Xiao-Dong;
Sekimoto, Kenichi;
Nekså, Petter.
(2011)
Investigation of dry ice blockage in an ultra-low temperature cascade refrigeration system using CO2 as a working fluid.
International journal of refrigeration.
volum 34 (2).
Academic article
2010
-
Berstad, David Olsson;
Stang, Jacob H;
Nekså, Petter.
(2010)
Large-scale hydrogen liquefier utilising mixed-refrigerant pre-cooling.
International Journal of Hydrogen Energy.
volum 35 (10).
Academic article
-
Hafner, Armin;
Christensen, Øystein Torp;
Nekså, Petter.
(2010)
Reversible R744 (CO2) heat pumps applied in public trains.
9th IIR-Gustav Lorentzen Conference on Natural Working Fluids.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Ladam, Yves;
Andresen, Trond;
Nekså, Petter.
(2010)
Experimental investigation of different ejector geometries for R-744 transcritical systems.
9th IIR-Gustav Lorentzen Conference on Natural Working Fluids.
Academic chapter/article/Conference paper
-
Krasae-in, Songwut;
Stang, Jacob H;
Nekså, Petter.
(2010)
Exergy analysis on the simulation of a small-scale hydrogen liquefaction test rig with a multi-component refrigerant refrigeration system.
International Journal of Hydrogen Energy.
volum 35 (15).
Academic article
-
Krasae-in, Songwut;
Stang, Jacob H;
Nekså, Petter.
(2010)
Simulation on a proposed large-scale liquid hydrogen plant using a multi-component refrigerant refrigeration system.
International Journal of Hydrogen Energy.
volum 35 (22).
Academic article
-
Skaugen, Geir;
Reigstad, Gunhild Allard;
Nekså, Petter;
Wahl, Per Eilif.
(2010)
Use of sophisticated heat exchanger simulation models for investigation of possible design and operational pitfalls in LNG processes.
Journal of Natural Gas Science and Engineering.
volum 2 (5).
Academic article
2009
-
Berstad, David Olsson;
Stang, Jacob H;
Nekså, Petter.
(2009)
Comparison criteria for large-scale hydrogen liquefaction processes.
International Journal of Hydrogen Energy.
volum 34 (3).
Academic article
2008
-
Zha, Shitong;
Hafner, Armin (SINTEF);
Nekså, Petter (SINTEF).
(2008)
Investigation of R-744 Voorhees transcritical heat pump system.
International journal of refrigeration.
volum 31 (1).
Academic article
2007
-
Eikevik, Trygve Magne;
Nekså, Petter (SINTEF).
(2007)
Proceedings - 7th IIR Gustav Lorentzen Conference on Natural Working Fluids.
2007. ISBN 2-913149-48-0.
Non-fiction book
-
Haukås, Hans Torleiv;
Stene, Jørn;
Rekstad, Inge Håvard;
Nekså, Petter (SINTEF);
Eikevik, Trygve Magne.
(2007)
Kjøle- og fryseanlegg med CO2 (R744) som kuldemedium.
2007. ISBN 000-00-000-0000-0.
Textbook
-
Hafner, Armin;
Nekså, Petter.
(2007)
Global environmental and economic benefits of introducing R-744 mobile air conditioning.
Proceedings : 22nd International Congress of Refrigeration : Refrigeration creates the future.
Academic chapter/article/Conference paper
-
Stene, Jørn;
Andresen, Trond;
Skiple, Torgeir;
Nekså, Petter.
(2007)
CO2 Heat pump system for combined heating and cooling of non-residential buildings.
Proceedings : 22nd International Congress of Refrigeration : Refrigeration creates the future.
Academic chapter/article/Conference paper
2006
-
Aspelund, Audun;
Reigstad, Gunhild Allard;
Nekså, Petter;
Kolsaker, Kjell.
(2006)
LNG-Chain, a calculation tool for natural gas quality in small-scale LNG distribution chains.
Science et technique du froid.
Academic article
-
Hafner, Armin;
Nekså, Petter.
(2006)
Global environmental consequences of introducing R-744 (CO2) mobile air conditioning.
7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006).
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter.
(2006)
Globale Konsequenzen bei der Einführung von Fahrzeugklimaanlagen mit dem Kältemittel R-744.
Deutsche Kälte-Klima-Tagung 2006 Dresden.
Academic chapter/article/Conference paper
-
Nekså, Petter.
(2006)
Performance of CO2-refrigeration (R-744) in commercial cold drink equipment.
7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006).
Academic chapter/article/Conference paper
2005
-
Nekså, Petter;
Hoggen, Rune Lillethun;
Aflekt, Kåre;
Jakobsen, Arne;
Skaugen, Geir.
(2005)
Fan-less heat exchanger concept for CO2 heat pump systems.
International journal of refrigeration.
volum 28.
Academic article
-
Nekså, Petter.
(2005)
Refrigeration sector.
IPCC/TEAP special report on safeguarding the ozone layer and the global climate system : issues related to hydrofluorocarbons and perfluorocarbons.
Academic chapter/article/Conference paper
2004
-
Nekså, Petter;
Girotto, Sergio;
Minetto, Silvia;
Pettersen, Jostein.
(2004)
Commercial refrigeration system using CO2 as the refrigerant.
International journal of refrigeration.
volum 27 (7).
Academic article
-
Jakobsen, Arne;
Skaugen, Geir;
Skiple, Torgeir;
Nekså, Petter;
Andresen, Trond.
(2004)
Development and Evaluation of a Reversible CO2 Residential Air Conditioning System Compared to State-of-the-Art R410A Unit.
6th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2004).
Academic chapter/article/Conference paper
2002
-
Elgsæther, Munan;
Nekså, Petter;
Skaugen, Geir;
Rekstad, Håvard.
(2002)
CO2 as refrigerant in beverage coolers, Evaluation and prototype testing.
2002. SINTEF Rapport (TRF5738).
Report
-
Munkejord, Svend Tollak;
Mæhlum, Harald S.;
Zakeri, Gholam R.;
Nekså, Petter;
Pettersen, Jostein.
(2002)
Micro technology in heat pumping systems.
International journal of refrigeration.
volum 25.
Academic article
-
Nekså, Petter;
Pettersen, Jostein.
(2002)
Air Conditioning and Heat Pump Technology Development in Europe.
The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea.
volum 31 (7).
Academic article
-
Pettersen, Jostein;
Nekså, Petter.
(2002)
Financial Times' Global Energy Awards 2001 : NTNU/Sintef CO2-teknologi til finalen.
Xergi.
volum 42 (1).
Popular scientific article
-
Pettersen, Jostein;
Nekså, Petter;
Rekstad, Håvard.
(2002)
Testing and evaluation of a condensing unit in a residential air conditioning system.
2002. SINTEF Rapport (TRF5686).
Report
-
Rekstad, Håvard;
Nekså, Petter.
(2002)
Testing and evaluation of CO2 compressors for the NBC project. Item 2. Compresosr tests at SINTEF.
2002. SINTEF Rapport (TRF5717).
Report
-
Nekså, Petter.
(2002)
CO2 heat pump system.
International journal of refrigeration.
volum 25 (4).
Academic article
2001
-
Aarlien, Rune;
Pettersen, Jostein;
Nekså, Petter;
Strømmen, Ingvald;
Eikevik, Trygve Magne;
Bredesen, Arne Mathias.
(2001)
Place du CO2 dans les applications frigorifiques et de conditionnement d'air.
La Revue Générale du Froid.
Academic article
2000
-
Nekså, Petter;
Bredesen, Arne Mathias.
(2000)
Short Course on CO2 Refrigeration Technology (SC7).
2000.
Compendium
-
Strømmen, Ingvald;
Bredesen, Arne Mathias;
Eikevik, Trygve Magne;
Nekså, P.;
Pettersen, Jostein;
Aarlien, R..
(2000)
Refrigeration, Air-conditioning and Heat-Pump Systems for the 21st Century Pompes à chaleur, applicatins frigorifiques et de conditionnement d`air pour le 21e siècle.
Bulletin of the International Institute of Refrigeration : Bulletin de l'Institut international du froid.
volum LXXX (2).
Academic article
1999
-
Rekstad, Håvard;
Nekså, Petter;
Bredesen, Arne Mathias.
(1999)
Measurements on semi-hermetic pre-series CO2 compressors.
1999. ISBN 82-594-1675-1.
Report
1998
-
Nekså, Petter;
Rekstad, Håvard;
Zakeri, G. Reza;
Schiefloe, Per Arne.
(1998)
CO%c-heat pump water heater : characteristics, system design and experimental results.
International journal of refrigeration.
volum 21 (3).
Popular scientific article
-
Stene, Jørn;
Nekså, Petter.
(1998)
Highly Efficient CO2 Heat Pump Water Heaters.
Heat Pump Centre Newsletter.
volum 16 (4).
Popular scientific article
1996
-
Aarlien, Rune;
Nekså, Petter;
Pettersen, Jostein.
(1996)
CO2 som alternativt arbeidsmedium i air-conditioninganlegg og varmepumper for boligformål.
Kulde.
Popular scientific article
-
Aarlien, Rune;
Nekså, Petter;
Pettersen, Jostein.
(1996)
Sammenlignende beregninger mellom anlegg med CO2 og R-22.
Kulde.
Popular scientific article
1994
-
Haukås, Hans;
Brendeng, Einar;
Lorentzen, Gustav;
Owren, Geir;
Nekså, Petter;
Aflekt, Kåre;
Jørstad, Oddvar;
Lystad, Tor;
Nesje, Odd;
Sandbakk, Marit.
(1994)
KFK-fri teknologi for kuldeanlegg og varmepumper : kompendiesamling nytt EEU-kurs.
1994.
Compendium
-
Nekså, Petter.
(1994)
Erstatningsmedier for HKFK-22.
1994.
Compendium
Journal publications
-
Voldsund, Mari;
Reyes Lua, Adriana;
Fu, Chao;
Ditaranto, Mario;
Nekså, Petter;
Mazzetti, Marit Jagtoyen;
Brekke, Olaf;
Bindingsbø, Arne Ulrik;
Grainger, David;
Pettersen, Jostein.
(2023)
Low carbon power generation for offshore oil and gas production.
Energy Conversion and Management: X.
volum 17.
Academic article
-
Berstad, David Olsson;
Skaugen, Geir;
Roussanaly, Simon;
Anantharaman, Rahul;
Nekså, Petter;
Jordal, Aina Benedikte Kristin;
Trædal, Stian;
Gundersen, Truls.
(2022)
CO2 Capture from IGCC by Low-Temperature Synthesis Gas Separation.
Energies.
volum 15 (2).
Academic article
-
Hagen, Brede Andre Larsen;
Andresen, Trond;
Nekså, Petter.
(2022)
Equation-oriented methods for optimizing Rankine cycles using radial inflow turbine.
Energy.
volum 252.
Academic article
-
Nekså, Petter.
(2022)
Vis oss varmepumpa di, så skal vi si om du bruker den rett.
Adresseavisen.
Feature article
-
Perez Clos, Daniel;
Zedel, Hannes;
Johnsen, Sverre Gullikstad;
Nekså, Petter;
Aune, Ragnhild Elizabeth.
(2022)
Composition and Structure Analysis of Hard Grey Scale (HGS) Formed on Cold Surfaces Exposed to Aluminium Production Off-gas.
JOM.
volum 74 (9).
Academic article
-
Shahrooz, Mina;
Lundqvist, Per;
Nekså, Petter.
(2022)
Performance of binary zeotropic mixtures in organic Rankine cycles (ORCs).
Energy Conversion and Management.
volum 266.
Academic article
-
Yamasaki, Haruhiko;
Wakimoto, Hiroyuki;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter;
Yamaguchi, Hiroshi.
(2022)
Visualization and Measurement of Swirling Flow of Dry Ice Particles in Cyclone Separator-Sublimator.
Energies.
volum 15 (11).
Academic article
-
Berstad, David Olsson;
Gardarsdottir, Stefania Osk;
Roussanaly, Simon;
Voldsund, Mari;
Ishimoto, Yuki;
Nekså, Petter.
(2021)
Liquid hydrogen as prospective energy carrier: A brief review and discussion of underlying assumptions applied in value chain analysis.
Renewable & Sustainable Energy Reviews.
volum 154.
Academic article
-
Clos, Daniel Perez;
Zedel, Hannes;
Johnsen, Sverre Gullikstad;
Nekså, Petter;
Aune, Ragnhild Elizabeth.
(2021)
Particle deposition characteristics in the formation of Hard Grey Scale (HGS) on cold surfaces exposed to aluminium production off-gas.
Journal of Aerosol Science.
volum 161.
Academic article
-
Hagen, Brede;
Agromayor, Roberto;
Nekså, Petter.
(2021)
Equation-oriented methods for design optimization and performance analysis of radial inflow turbines.
Energy.
volum 237.
Academic article
-
Singh, Simarpreet;
Hafner, Armin;
Maiya, M.P.;
Banasiak, Krzysztof;
Nekså, Petter.
(2021)
Multiejector CO2 cooling system with evaporative gascooler for a supermarket application in tropical regions.
Applied Thermal Engineering.
volum 190.
Academic article
-
Dasi, Koti;
Singh, Simarpreet;
Guruchethan, A.M.;
Maiya, M.P.;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2020)
Performance Evaluation of Ejector Based CO₂ System for Simultaneous Heating and Cooling Application in an Indian Dairy Industry.
Thermal Science and Engineering Progress.
volum 20.
Academic article
-
Ishimoto, Yuki;
Voldsund, Mari;
Nekså, Petter;
Roussanaly, Simon;
Berstad, David Olsson;
Gardarsdottir, Stefania Osk.
(2020)
Large-scale production and transport of hydrogen from Norway to Europe and Japan: Value chain analysis and comparison of liquid hydrogen and ammonia as energy carriers.
International Journal of Hydrogen Energy.
volum 45 (58).
Academic article
-
Singh, Simarpreet;
Maiya, Prakash;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2020)
Energy efficient multiejector CO2 cooling system for high ambient temperature.
Thermal Science and Engineering Progress.
volum 19.
Academic article
-
Wakimoto, Hiroyuki;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter;
Yamaguchi, Hiroshi.
(2020)
Dry-ice collection performance and collection mechanism of cyclone separator-evaporator.
33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2020).
Academic article
-
Yamasaki, Haruhiko;
Kizilkan, Ônder;
Yamaguchi, Hiroshi;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter.
(2020)
Experimental investigation of dry ice cyclone separator for ultra‐low temperature energy storage using carbon dioxide.
Energy Storage.
volum 2 (4).
Academic article
-
Yamasaki, Haruhiko;
Yamaguchi, Hiroshi;
Kizilkan, Ônder;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter.
(2020)
Experimental investigation of the effect of solid-gas two-phase flow in CO2 cascade refrigeration system.
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects.
Academic article
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2019)
Experimental investigation of a prototype R-600 compressor for high temperature heat pump.
Energy.
volum 169.
Academic article
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2019)
The development of a hydrocarbon high temperature heat pump for waste heat recovery.
Energy.
volum 173.
Academic article
-
Clos, Daniel Perez;
Nekså, Petter;
Johnsen, Sverre Gullikstad;
Aune, Ragnhild Elizabeth.
(2019)
Investigation on scale formation in aluminium industry by means of a cold-finger.
The Minerals, Metals & Materials Series.
Academic article
-
Jin, Zhequan;
Hafner, Armin;
Eikevik, Trygve Magne;
Nekså, Petter.
(2019)
Preliminary study on CO2 transcritical ejector enhanced compressor refrigeration system for independent space cooling and dehumidification.
International journal of refrigeration.
volum 100.
Academic article
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2018)
Theoretical analysis of suitable fluids for high temperature heat pumps up to 125 °C heat delivery.
International journal of refrigeration.
volum 92.
Academic article
-
Hafner, Armin;
Nekså, Petter.
(2018)
Integrated CO2 solutions for supermarkets.
Science et technique du froid.
volum 2018-June.
Academic article
-
Nekså, Petter;
Berstad, David Olsson;
Størset, Sigmund Østtveit.
(2018)
Fossil lhjelp til grønt skifte.
Dagens næringsliv.
Feature article
-
Singh, Simarpreet;
Maiya, M.P.;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2018)
CO2 refrigeration system for high ambient temperatures.
Air Conditioning and Refrigeration Journal.
volum 21 (5).
Article
-
Singh, Simarpreet;
Reddy, Amshith;
Prakash, Maiya P.;
Banasiak, Krzysztof;
Hafner, Armin;
Nekså, Petter.
(2018)
Performance investigation of a multi-ejector R744 heat pump.
Science et technique du froid.
volum 2018-June.
Academic article
-
Wilhelmsen, Øivind;
Berstad, David Olsson;
Aasen, Ailo;
Nekså, Petter;
Skaugen, Geir.
(2018)
Reducing the exergy destruction in the cryogenic heat exchangers of hydrogen liquefaction processes.
International Journal of Hydrogen Energy.
volum 43 (10).
Academic article
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael.
(2017)
Review of Vapour Compression Heat Pumps for High Temperature Heating using Natural Working Fluids.
International journal of refrigeration.
volum 80.
Academic literature review
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin.
(2017)
A steady and quasi-steady state analysis on the CO2 hybrid ground-coupled heat pumping system.
International journal of refrigeration.
volum 76.
Academic article
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Wang, Ruzhu.
(2017)
Annual energy performance of R744 and R410A heat pumping systems.
Applied Thermal Engineering.
volum 117.
Academic article
-
Yamasaki, Haruhiko;
Yamaguchi, Hiroshi;
Hattori, Kazuyuki;
Nekså, Petter.
(2017)
Experimental Observation of CO2 Dry-ice Behavior in an Evaporator/Sublimator.
Energy Procedia.
volum 143.
Academic article
-
Hemmingsen, Anne Karin;
Nekså, Petter.
(2016)
Spillvarme inn i varmen.
Gemini.
Feature article
-
Hemmingsen, Anne Karin;
Nekså, Petter.
(2016)
Spillvarme inn i varmen.
Dagens næringsliv.
Feature article
-
Hu, Haitao;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Ding, Guoliang;
Huang, Qingnan;
Ye, Jingjing.
(2016)
Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers.
International journal of refrigeration.
volum 63.
Academic article
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin.
(2016)
Investigation on CO2 hybrid ground-coupled heat pumping system under warm climate.
International journal of refrigeration.
volum 62.
Academic article
-
Nekså, Petter;
Hemmingsen, Anne Karin Torstveit.
(2016)
CO2 gir grønn kjøling.
Dagens næringsliv.
Feature article
-
Berstad, David Olsson;
Nekså, Petter.
(2015)
Flytende vind og gass til Japan?.
Dagens næringsliv.
Feature article
-
DiRenzo, Joseph;
Nekså, Petter;
Kolsaker, Kjell.
(2015)
Analysis of Natural Gas engine de-loading on LNG fuelled vessels.
Energy Procedia.
volum 64 (C).
Academic article
-
Hafner, Armin;
Nekså, Petter.
(2015)
Il futoro del CO2 : confronto di diverse configurazioni di un sistema ad R744 per supermercati nei paesi piu caldi.
Industria & formazione.
Article
-
Jordal, Kristin;
Anantharaman, Rahul;
Peters, Thijs;
Berstad, David Olsson;
Morud, John Christian;
Nekså, Petter;
Bredesen, Rune.
(2015)
High-purity H2 production with CO2 capture based on coal gasification.
Energy.
volum 88.
Academic article
-
Nekså, Petter.
(2015)
Preface.
Energy Procedia.
volum 64 (C).
Editorial
-
Berstad, David Olsson;
Roussanaly, Simon;
Skaugen, Geir;
Anantharaman, Rahul;
Nekså, Petter;
Jordal, Kristin.
(2014)
Energy and Cost Evaluation of A Low-temperature CO2 Capture Unit for IGCC plants.
Energy Procedia.
volum 63.
Academic article
-
Hafner, Armin;
Nekså, Petter.
(2014)
System configurations for supermarkets i warm climates applying R744 refrigeration technologies - case study of selected cities.
Industria & formazione.
Popular scientific article
-
Mazzetti, Marit Jagtoyen;
Nekså, Petter;
Walnum, Harald Taxt;
Hemmingsen, Anne Karin.
(2014)
Energy-Efficient Technologies for Reduction of Offshore CO2 Emissions.
Oil and Gas Facilities.
volum 3 (1).
Academic literature review
-
Berstad, David Olsson;
Anantharaman, Rahul;
Nekså, Petter.
(2013)
Integrated Low-temperature CO2 Capture from IGCC Power Plant by Partial Condensation and Separation of Syngas.
Chemical Engineering Transactions.
Academic article
-
Berstad, David Olsson;
Anantharaman, Rahul;
Nekså, Petter.
(2013)
Low-temperature CCS from an IGCC Power Plant and Comparison with Physical Solvents.
Energy Procedia.
volum 37.
Academic article
-
Berstad, David Olsson;
Anantharaman, Rahul;
Nekså, Petter.
(2013)
Low-temperature CO2 capture technologies - Applications and potential.
International journal of refrigeration.
volum 36 (5).
Academic literature review
-
Kus, Bartosz;
Nekså, Petter.
(2013)
Development of one-dimensional model for initial design and evaluation of oil-free CO2 turbo-compressor.
International journal of refrigeration.
volum 36 (8).
Academic article
-
Kus, Bartosz;
Nekså, Petter.
(2013)
Novel partial admission radial compressor for CO2 applications.
International journal of refrigeration.
volum 36 (8).
Academic article
-
Kus, Bartosz;
Nekså, Petter.
(2013)
Oil free turbo-compressors for CO2 refrigeration applications.
International journal of refrigeration.
volum 36 (5).
Academic article
-
Rohde, Daniel;
Walnum, Harald Taxt;
Andresen, Trond;
Nekså, Petter.
(2013)
Heat recovery from export gas compression: Analyzing power cycles with detailed heat exchanger models.
Applied Thermal Engineering.
volum 60 (1-2).
Academic article
-
Walnum, Harald Taxt;
Nekså, Petter;
Nord, Lars Olof;
Andresen, Trond.
(2013)
Modelling and simulation of CO2 (carbon dioxide) bottoming cycles for offshore oil and gas installations at design and off-design conditions.
Energy.
volum 59.
Academic article
-
Berstad, David Olsson;
Nekså, Petter;
Anantharaman, Rahul.
(2012)
Low-temperature CO2 Removal from Natural Gas.
Energy Procedia.
volum 26.
Academic article
-
Mazzetti, Marit Jagtoyen;
Nekså, Petter.
(2012)
Tapt kraft til Nytte.
Dagens næringsliv.
volum 123 (281).
Feature article
-
Berstad, David Olsson;
Nekså, Petter;
Reigstad, Gunhild Allard.
(2011)
Low-temperature syngas separation and CO2 capture for enhanced efficiency of IGCC power plants.
Energy Procedia.
volum 4.
Academic article
-
Hafner, Armin;
Nekså, Petter;
Ladam, Yves;
Eikevik, Trygve Magne.
(2011)
Oljefrie CO2 systemer for industrielle og kommersielle anvendelser.
Kulde.
Academic article
-
Krasae-in, Songwut;
Bredesen, Arne Mathias;
Stang, Hans Georg Jacob;
Nekså, Petter.
(2011)
Simulation and experiment of a hydrogen liquefaction test rig using a multi-component refrigerant refrigeration system.
International Journal of Hydrogen Energy.
volum 36 (1).
Academic article
-
Niu, Xiao-Dong;
Yamaguchi, Hiroshi;
Iwamoto, Yuhiro;
Nekså, Petter.
(2011)
Experimental study on a CO2-solid-gas-flow-based ultra-low temperature cascade refrigeration system.
International Journal of Low-Carbon Technologies.
volum 6 (2).
Academic article
-
Tangen, Grethe;
Hemmingsen, Anne Karin;
Nekså, Petter.
(2011)
CREATIV: Research-based innovation for industry energy efficiency.
Applied Thermal Engineering.
volum 31 (17-18).
Academic article
-
Walnum, Harald Taxt;
Ladam, Yves;
Nekså, Petter;
Andresen, Trond.
(2011)
Off-design operation of ORC and CO2 power production cycles for low temperature surplus heat recovery.
International Journal of Low-Carbon Technologies.
volum 6 (2).
Academic article
-
Yamaguchi, Hiroshi;
Niu, Xiao-Dong;
Sekimoto, Kenichi;
Nekså, Petter.
(2011)
Investigation of dry ice blockage in an ultra-low temperature cascade refrigeration system using CO2 as a working fluid.
International journal of refrigeration.
volum 34 (2).
Academic article
-
Berstad, David Olsson;
Stang, Jacob H;
Nekså, Petter.
(2010)
Large-scale hydrogen liquefier utilising mixed-refrigerant pre-cooling.
International Journal of Hydrogen Energy.
volum 35 (10).
Academic article
-
Krasae-in, Songwut;
Stang, Jacob H;
Nekså, Petter.
(2010)
Exergy analysis on the simulation of a small-scale hydrogen liquefaction test rig with a multi-component refrigerant refrigeration system.
International Journal of Hydrogen Energy.
volum 35 (15).
Academic article
-
Krasae-in, Songwut;
Stang, Jacob H;
Nekså, Petter.
(2010)
Simulation on a proposed large-scale liquid hydrogen plant using a multi-component refrigerant refrigeration system.
International Journal of Hydrogen Energy.
volum 35 (22).
Academic article
-
Skaugen, Geir;
Reigstad, Gunhild Allard;
Nekså, Petter;
Wahl, Per Eilif.
(2010)
Use of sophisticated heat exchanger simulation models for investigation of possible design and operational pitfalls in LNG processes.
Journal of Natural Gas Science and Engineering.
volum 2 (5).
Academic article
-
Berstad, David Olsson;
Stang, Jacob H;
Nekså, Petter.
(2009)
Comparison criteria for large-scale hydrogen liquefaction processes.
International Journal of Hydrogen Energy.
volum 34 (3).
Academic article
-
Zha, Shitong;
Hafner, Armin (SINTEF);
Nekså, Petter (SINTEF).
(2008)
Investigation of R-744 Voorhees transcritical heat pump system.
International journal of refrigeration.
volum 31 (1).
Academic article
-
Aspelund, Audun;
Reigstad, Gunhild Allard;
Nekså, Petter;
Kolsaker, Kjell.
(2006)
LNG-Chain, a calculation tool for natural gas quality in small-scale LNG distribution chains.
Science et technique du froid.
Academic article
-
Nekså, Petter;
Hoggen, Rune Lillethun;
Aflekt, Kåre;
Jakobsen, Arne;
Skaugen, Geir.
(2005)
Fan-less heat exchanger concept for CO2 heat pump systems.
International journal of refrigeration.
volum 28.
Academic article
-
Nekså, Petter;
Girotto, Sergio;
Minetto, Silvia;
Pettersen, Jostein.
(2004)
Commercial refrigeration system using CO2 as the refrigerant.
International journal of refrigeration.
volum 27 (7).
Academic article
-
Munkejord, Svend Tollak;
Mæhlum, Harald S.;
Zakeri, Gholam R.;
Nekså, Petter;
Pettersen, Jostein.
(2002)
Micro technology in heat pumping systems.
International journal of refrigeration.
volum 25.
Academic article
-
Nekså, Petter;
Pettersen, Jostein.
(2002)
Air Conditioning and Heat Pump Technology Development in Europe.
The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea.
volum 31 (7).
Academic article
-
Pettersen, Jostein;
Nekså, Petter.
(2002)
Financial Times' Global Energy Awards 2001 : NTNU/Sintef CO2-teknologi til finalen.
Xergi.
volum 42 (1).
Popular scientific article
-
Nekså, Petter.
(2002)
CO2 heat pump system.
International journal of refrigeration.
volum 25 (4).
Academic article
-
Aarlien, Rune;
Pettersen, Jostein;
Nekså, Petter;
Strømmen, Ingvald;
Eikevik, Trygve Magne;
Bredesen, Arne Mathias.
(2001)
Place du CO2 dans les applications frigorifiques et de conditionnement d'air.
La Revue Générale du Froid.
Academic article
-
Strømmen, Ingvald;
Bredesen, Arne Mathias;
Eikevik, Trygve Magne;
Nekså, P.;
Pettersen, Jostein;
Aarlien, R..
(2000)
Refrigeration, Air-conditioning and Heat-Pump Systems for the 21st Century Pompes à chaleur, applicatins frigorifiques et de conditionnement d`air pour le 21e siècle.
Bulletin of the International Institute of Refrigeration : Bulletin de l'Institut international du froid.
volum LXXX (2).
Academic article
-
Nekså, Petter;
Rekstad, Håvard;
Zakeri, G. Reza;
Schiefloe, Per Arne.
(1998)
CO%c-heat pump water heater : characteristics, system design and experimental results.
International journal of refrigeration.
volum 21 (3).
Popular scientific article
-
Stene, Jørn;
Nekså, Petter.
(1998)
Highly Efficient CO2 Heat Pump Water Heaters.
Heat Pump Centre Newsletter.
volum 16 (4).
Popular scientific article
-
Aarlien, Rune;
Nekså, Petter;
Pettersen, Jostein.
(1996)
CO2 som alternativt arbeidsmedium i air-conditioninganlegg og varmepumper for boligformål.
Kulde.
Popular scientific article
-
Aarlien, Rune;
Nekså, Petter;
Pettersen, Jostein.
(1996)
Sammenlignende beregninger mellom anlegg med CO2 og R-22.
Kulde.
Popular scientific article
Books
-
Eikevik, Trygve Magne;
Nekså, Petter (SINTEF).
(2007)
Proceedings - 7th IIR Gustav Lorentzen Conference on Natural Working Fluids.
2007. ISBN 2-913149-48-0.
Non-fiction book
-
Haukås, Hans Torleiv;
Stene, Jørn;
Rekstad, Inge Håvard;
Nekså, Petter (SINTEF);
Eikevik, Trygve Magne.
(2007)
Kjøle- og fryseanlegg med CO2 (R744) som kuldemedium.
2007. ISBN 000-00-000-0000-0.
Textbook
Part of book/report
-
Cely, Alexandra;
Hammer, Morten;
Andersen, Hilde;
Yang, Tao;
Nekså, Petter;
Wilhelmsen, Øivind.
(2022)
Thermodynamic Model Evaluations for Hydrogen Pipeline Transportation.
SPE EuropEC - Europe Energy Conference featured at the 83rd EAGE Annual Conference & Exhibition.
Academic chapter/article/Conference paper
-
Ervik, Åsmund;
Saai, Afaf;
Berstad, Torodd;
Meyer, Ole;
Tsuji, Takuma;
Oku, Tatsuya;
Hattori, Kazuhiro;
Yamada, Kazuya;
Delhaye, Virgile Roger;
Nekså, Petter.
(2022)
Coupled fluid-solid modelling of the valve dynamics in reciprocating compressors.
15th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2022 - Proceedings - Trondheim, Norway, June 13-15th 2022.
Academic chapter/article/Conference paper
-
Yamaguchi, H.;
Ishikawa, Yuki;
Yamasaki, Hiroshi;
Kamimura, Takeshi;
Hattori, K;
Nekså, Petter.
(2022)
Ultra-low temperature refrigeration system of CO2 using cyclone separator/evaporator.
15th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2022 - Proceedings - Trondheim, Norway, June 13-15th 2022.
Academic chapter/article/Conference paper
-
Ervik, Åsmund;
Saai, Afaf;
Berstad, Torodd;
Meyer, Ole;
Tsuji, Takuma;
Oku, Tatsuya;
Hattori, Kazuhiro;
Yamada, Kazuya;
Delhaye, Virgile Roger;
Nekså, Petter.
(2021)
Modelling the dynamics of ring plate valves in reciprocating compressors using coupled CFD-FEM simulations.
10th IIR Conference on Compressors and Refrigerants.
Academic chapter/article/Conference paper
-
Andresen, Trond;
Lingaas, Simon Johan Nilsen;
Hagen, Brede;
Nekså, Petter.
(2020)
Dynamic Analysis of Energy Recovery Utilizing Thermal Storage from Batch-Wise Metal Casting.
IIR Rankine Conference 2020.
Academic chapter/article/Conference paper
-
Clos, Daniel Perez;
Johnsen, Sverre Gullikstad;
Nekså, Petter;
Aune, Ragnhild Elizabeth.
(2020)
The Effect of Hard Scale Deposition on the Wall Heat Flux of a Cold Finger.
Light Metals 2020.
Academic chapter/article/Conference paper
-
Hagen, Brede;
Cavo, Matteo;
Andresen, Trond;
Nekså, Petter.
(2020)
Gradient Based Design Optimization of a Radial Inflow Turbine.
IIR Rankine Conference 2020.
Academic chapter/article/Conference paper
-
Shahrooz, Mina;
Lundqvist, Per;
Nekså, Petter.
(2020)
Effect of Waste Heat Utilization on the Performance of Low Temperature Rankine Cycle.
IIR Rankine Conference 2020.
Academic chapter/article/Conference paper
-
Skjervold, Vidar T.;
Skaugen, Geir;
Andresen, Trond;
Nekså, Petter.
(2020)
Enabling Power Production from Challenging Industrial Off-Gas – Model-Based Investigation of a Novel Heat Recovery Concept.
IIR Rankine Conference 2020.
Academic chapter/article/Conference paper
-
Tazawa, Taluya;
Yoshida, S;
Yamasaki, Haruhiko;
Wakimoto, Hiroyuki;
Yamaguchi, Hiroshi;
Kamimura, Takeshi;
Hattori, Kazuhiro;
Nekså, Petter.
(2020)
Thermal Characteristics in Supercritical CO2 Along Heating Tube.
Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020.
Academic chapter/article/Conference paper
-
Wakimoto, Hiroko;
Uchi, K.;
Yamasaki, Haruhiko;
Yamaguchi, Hiroshi;
Kamimura, Takeshi;
Hattori, Kazuyuki;
Nekså, Petter.
(2020)
Basic performance of CO2 cyclone refrigeration system.
Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020.
Academic chapter/article/Conference paper
-
Yamasaki, Haruhiko;
Wakimoto, Hiroyuki;
Yamaguchi, Hiroshi;
Nekså, Petter.
(2020)
Solar heat recovery system using CO2 as working fluid.
Proceedings of the 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants - GL2020.
Academic chapter/article/Conference paper
-
Banasiak, Krzysztof;
Singh, Simarpreet;
Hafner, Armin;
Maiya, Prakash;
Nekså, Petter;
Pardiñas, Ángel Á..
(2019)
Experimental investigation of CO2 systems for Indian supermarkets with parallel configuration of multiejectors (INDEE).
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
-
Kumar, Kundan;
Singh, Simarpreet;
Kumar, Pramod;
Maiya, M.P.;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2019)
Experimental analysis of transcritical CO2 booster refrigeration system with heat recovery and ejector expansion.
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian;
Bamigbetan, Opeyemi Olayinka.
(2019)
High temperature industrial heat pumps utilising natural working fluids.
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Røkke, Petter Egil.
(2019)
Energibruk og utslipp i industrien: Den billigste kilowatttimen.
Det Nye Digitale Norge.
publications.POPVIT_KAPITTEL
-
Schlemminger, Christian;
Svendsen, Eirik Starheim;
Foslie, Sverre Stefanussen;
Bantle, Michael;
Bamigbetan, Opeyemi Olayinka;
Nekså, Petter.
(2019)
Performance of high temperature heat pump for simultaneous and efficient production of ice water and process heat.
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
-
Sharooz, Mina;
Lindqvist, Per;
Nekså, Petter.
(2019)
Effect of Working Fluid Type on Low Temperature Rankine Cycle Optimization.
Proceedings of the 5th International Seminar on ORC Power Systems.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Hafner, Armin;
Banasiak, Krzysztof;
Maiya, Prakash;
Nekså, Petter.
(2019)
Experimental Evaluation of a Multi-Ejector Trans-critical CO2 System for Supermarkets.
Proceedings of the 25th IIR International Congress of Refrigeration. Montréal, Canada, August 24-30, 2019.
Academic chapter/article/Conference paper
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2018)
Experimental investigation of the performance of a hydrocarbon heat pump for high temperature industrial heating.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael;
Schlemminger, Christian.
(2018)
Theoretical analysis for charge reduction in a 200 kW hydrocarbon hight temperature heat pump.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Blust, Stefanie;
Hafner, Armin;
Banasiak, Krzysztof;
Nekså, Petter.
(2018)
Possible configurations of multiejector driven CO2 systems for Indian supermarkets.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Blust, Stefanie;
Singh, Simarpreet;
Banasiak, Krzysztof;
Nekså, Petter.
(2018)
Environment-friendly refrigeration packs for Indian supermarkets: experimental investigation of energy performance of a multiejector-driven R744 integrated compressor rack.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Dieryckx, Martin;
Chen, Guangming;
Gluckman, Ray;
Nekså, Petter;
Okada, Tetsuji.
(2018)
Water and space heating heat pumps.
Montreal Protocol on Substances that Deplete the Ozone Layer : 2018 report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee.
Chapter
-
Dorman, Dennis;
Calm, James M.;
Dieryckx, Martin;
Hamed, Samir;
Pachai, Alex;
Rusignuolo, Gorgio;
Nekså, Petter;
Hickman, Kenneth E..
(2018)
Chillers.
Montreal Protocol on Substances that Deplete the Ozone Layer : 2018 report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee.
Chapter
-
Rajendran, Rajan;
Janssen, Martien;
Kauffeld, Michael;
Lal, D. Mohan;
Nekså, Petter;
Pedersen, Per-Henrik;
Motta, Samuel Yana.
(2018)
Commercial refrigeration.
Montreal Protocol on Substances that Deplete the Ozone Layer : 2018 report of the Refrigeration, Air Conditioning and Heat Pumps Technical Options Committee.
Chapter
-
Shahrooz, Mina;
Lundqvist, Per;
Nekså, Petter.
(2018)
Natural refrigerants for low temperature power cycles.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Banasiak, Krzysztof;
Hafner, Armin;
Maiya, M.P.;
Nekså, Petter.
(2018)
Performance evaluation of CO2 ejector system with parallel compressor for supermarket application.
17th International Refrigeration and Air Conditioning Conference 2018.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Hafner, Armin;
Banasiak, Krzysztof;
Maiya, Prakash M.;
Nekså, Petter.
(2018)
Experimental evaluation of multi-ejector based CO2 cooling system for supermarkets in tropical zones.
17th International Refrigeration and Air Conditioning Conference 2018.
Academic chapter/article/Conference paper
-
Singh, Simarpreet;
Reddy, Amshith;
Parkash, Maiya M.;
Banasiak, Krzysztof;
Hafner, Armin;
Nekså, Petter.
(2018)
Analysis of R744 refrigeration system with liquid ejectors.
Proceedings of the 13th IIR Gustav Lorentzen Conference, Valencia, 2018.
Academic chapter/article/Conference paper
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael.
(2017)
Extending ammonia high temperature heat pump using butane in a cascade system.
7th Conference on Ammonia and CO2 Refrigeration Technology, Ohrid, Macedonia, May 11-13, 2017.
Academic chapter/article/Conference paper
-
Berstad, David Olsson;
Wilhelmsen, Øivind;
Skjervold, Vidar T.;
Nekså, Petter.
(2017)
Cryogenic CO2 condensation and membrane separation of syngas for large-scale LH2 production.
Cryogenics 2017 : Proceedings of the 14th IIR International Conference, Dresden, Germany, Mai 15-19, 2017..
Academic chapter/article/Conference paper
-
Clos, Daniel Perez;
Andresen, Trond;
Nekså, Petter;
Johnsen, Sverre Gullikstad;
Aune, Ragnhild Elizabeth.
(2017)
Enabling Efficient Heat Recovery from Aluminium Pot Gas.
Light metals 2017.
Academic chapter/article/Conference paper
-
Kauko, Hanne;
Nordtvedt, Stein Rune;
Nekså, Petter;
Bantle, Michael.
(2017)
High-temperature heat pumps based on natural working fluids to produce district heating from industrial waste heat.
7th Conference on Ammonia and CO2 Refrigeration Technology, Ohrid, Macedonia, May 11-13, 2017.
Academic chapter/article/Conference paper
-
Wilhelmsen, Øivind;
Skaugen, Geir;
Berstad, David Olsson;
Aasen, Ailo;
Nekså, Petter.
(2017)
Understanding the physical phenomena that occur inside heat exchangers for liquefaction of hydrogen.
Cryogenics 2017 : Proceedings of the 14th IIR International Conference, Dresden, Germany, Mai 15-19, 2017..
Academic chapter/article/Conference paper
-
Bamigbetan, Opeyemi Olayinka;
Eikevik, Trygve Magne;
Nekså, Petter;
Bantle, Michael.
(2016)
Evaluation of Natural working fluids for the Development of high temperature heat pumps.
12th IIR Gustav Lorentzen Conference on Natural Refrigerants GL2016 : Proceedings.
Academic chapter/article/Conference paper
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Wang, Ruzhu.
(2016)
Energy efficiency comparison of heat pumping systems using R744 and R410A as refrigerant.
12th IIR Gustav Lorentzen Conference on Natural Refrigerants GL2016 : Proceedings.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Hafner, Armin;
Bredesen, Arne Mathias;
Eikevik, Trygve Magne.
(2016)
CO2 as working fluid - technological development on the road to sustainable refrigeration.
12th IIR Gustav Lorentzen Conference on Natural Refrigerants GL2016 : Proceedings.
Academic chapter/article/Conference paper
-
Clodic, Denis;
Janssen, Martien;
Kauffeld, Michael;
Nekså, Petter;
Pedersen, Per-Henrik;
Silva, Alessandro;
Rajandran, Rajan.
(2015)
Commercial refrigeration.
Montreal protocol on substances that deplete the ozone layer : UNEP 2014 Report on the refrigeration, air conditioning and heat pumps Technical Options Committee : 2014 assessment.
Academic chapter/article/Conference paper
-
Dieryckx, Martin;
Chen, Guangming;
Grozdek, Marino;
Kaibara, Makoto;
Nekså, Petter;
Okada, Tetsuji.
(2015)
Water heating heat pumps.
Montreal protocol on substances that deplete the ozone layer : UNEP 2014 Report on the refrigeration, air conditioning and heat pumps Technical Options Committee : 2014 assessment.
Academic chapter/article/Conference paper
-
Fidorra, N;
Hafner, Armin;
Nekså, Petter;
Köhler, Jürgen.
(2015)
Energy cost analysis of heat recovery in CO2 supermarket refrigeration systems.
Ammonia and CO2 Refrigeration Technologies - Ohrid, Macedonia April 16-18, 2015 - Proceedings.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter.
(2015)
System configurations for supermarkets in warm climates applying R744 refrigeration technologies - case studies of selected cities.
16th European Conference - Latest technologies in refrigeration and air conditioning, Milano 12th-13th June 2015 - Expo 2015.
Chapter
-
Iwamoto, Yuhiro;
Yamasaki, Haruhiko;
Niu, Xiao-Dong;
Nekså, Petter;
Yamaguchi, Hiroshi.
(2015)
Experimental study on system performance of ultra-low temperature cascade refrigeration system using Carbon Dioxide with tapered evaporator/sublimator.
Proceedings of the 24th International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Ding, Guoliang.
(2015)
ENERGY PERFORMANCE OF CO2 HYBRID GROUND-COUPLED HEAT PUMPING SYSTEM FOR HOTEL APPLICATION.
Proceedings of the 24th International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Dieryckx, Martin;
Chen, Guangming;
Grozdek, Marino;
kaibara, Makoto;
Okada, Tetsuji.
(2015)
Water Heating Heat Pumps.
2014 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
Janssen, Martien;
Kauffeld, Michael;
Pedersen, Per-Henrik;
Silva, Alessandro;
Rajandran, Rajan.
(2015)
Commercial Refrigeration.
2014 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Hafner, Armin;
Hemmingsen, Anne Karin;
Nekså, Petter.
(2014)
System configuration for supermarkets in warm climates applying R744 refrigeration technologies - case study of selected chinese cities.
Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014.
Academic chapter/article/Conference paper
-
Jin, Zhequan;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Ding, G.;
Hu, Haitao.
(2014)
Transient simulation of R744 hybrid ground coupled heat pump with modelica.
Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014.
Academic chapter/article/Conference paper
-
Mazzetti, Marit Jagtoyen;
Ladam, Yves;
Walnum, Harald Taxt;
Hagen, Brede Andre Larsen;
Skaugen, Geir;
Nekså, Petter.
(2014)
Flexible Combined Heat and Power Systems for Offshore Oil and Gas Facilities With CO2 Bottoming Cycles.
ASME 2014 Power Conference - POWER 2014 - Volume 2.
Academic chapter/article/Conference paper
-
Nekså, Petter.
(2014)
Carbon dioxide applications.
CO2 as a refrigerant.
Academic chapter/article/Conference paper
-
Skaugen, Geir;
Walnum, Harald Taxt;
Hagen, Brede Andre Larsen;
Clos, Daniel Perez;
Mazzetti, Marit Jagtoyen;
Nekså, Petter.
(2014)
Design and optimization of waste heat recovery unit using carbon dioxide as cooling fluid.
ASME 2014 Power Conference - POWER 2014 - volume 1.
Academic chapter/article/Conference paper
-
Yamaguchi, H.;
Iwamoto, Y;
Ozaki, S;
Nekså, Petter.
(2014)
Experimental observation of sedimentation phenomena of CO2 dry ice in model channel.
Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014.
Academic chapter/article/Conference paper
-
Ye, Jingjing;
Eikevik, Trygve Magne;
Nekså, Petter;
Hafner, Armin;
Ding, G.;
Hu, H..
(2014)
Performance and economy analysis of a solar assisted CO2 ground source heat pump with air-cooled gas cooler under different climate conditions.
Proceedings of the 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Justo Alonso, Maria;
Schmälzle, Christian;
Nekså, Petter.
(2013)
High efficient 18-90 m3/h R744 compressor.
Compressors 2013 : 8th International Conference on Compressors and Coolants.
Academic chapter/article/Conference paper
-
Mazzetti, Marit Jagtoyen;
Nekså, Petter;
Walnum, Harald Taxt;
Hemmingsen, Anne Karin.
(2013)
Novel energy efficiency technologies for reduction of offshore CO2 emissions.
Offshore Technology Conference.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Poppi, Stefano;
Nekså, Petter;
Minetto, Silvia;
Eikevik, Trygve Magne.
(2012)
Development of Commersial Refrigeration Systems with Heat Recovery for Supermaket Buildings.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Schmälzle, Christian;
Nekså, Petter;
Obrist, Frank;
Rekstad, Inge Håvard.
(2012)
High efficient 100 kW elR744 compressor.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Kus, Bartosz;
Nekså, Petter.
(2012)
Oil Free Turbo-Compressors For Refrigeration Applications.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Quack, Hans;
Essler, Jürgen;
Haberstroh, Christoph;
Walnum, Harald Taxt;
Berstad, David Olsson;
Drescher, Michael;
Nekså, Petter.
(2012)
Search for the Best Processes to Liquefy Hydrogen in Very Large Plants.
Proceedings : the 12th Cryogenics 2012 IIR International Conference, Dresden, Germany, September 11-14, 2012.
Academic chapter/article/Conference paper
-
Rohde, Daniel;
Ladam, Yves;
Walnum, Harald Taxt;
Nekså, Petter.
(2012)
Heat pumps for steam production from waste heat.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Titze, Maren;
Lemke, Nicholas;
Nekså, Petter;
Hafner, Armin;
Köhler, Jürgen.
(2012)
Dynamic modeling of a combined supermarket refrigeration and HVAC system.
Proceedings of 10th IIR Gustav Lorentzen Conference, June 25 - 27 2012 Delft, the Netherlands.
Academic chapter/article/Conference paper
-
Walnum, Harald Taxt;
Berstad, David Olsson;
Drescher, Michael;
Nekså, Petter;
Quack, Hans;
Haberstroh, Christoph;
Essler, Jürgen.
(2012)
Principles for the Liquefaction of Hydrogen with Emphasis on Precooling Processes.
Proceedings : the 12th Cryogenics 2012 IIR International Conference, Dresden, Germany, September 11-14, 2012.
Academic chapter/article/Conference paper
-
Berstad, David Olsson;
Anantharaman, Rahul;
Nekså, Petter.
(2011)
Potential for low-temperature concepts in different CCS applications.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Berstad, David Olsson;
Nekså, Petter;
Anantharaman, Rahul.
(2011)
Low-temperature syngas separation for CO2 capture from an IGCC power plant.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter;
Ladam, Yves;
Eikevik, Trygve Magne.
(2011)
OIL-FREE R744 SYSTEMS FOR INDUSTRIAL/COMMERCIAL APPLICATIONS.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Berstad, David Olsson;
Anantharaman, Rahul.
(2011)
Overview of current and possible applications for refrigeration technologies within CCS.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Nekså, Petter;
Čermák, Radim;
Kauffeld, Michael;
Pachai, Alexander C.;
Wild, Yves;
Cavalier, Gerald;
Xie, Ruhe;
Colborne, Daniel.
(2011)
Transport Refrigeration.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
Clodic, Denis;
Kauffeld, Michael;
Pedersen, Per-Henrik;
Peixoto, Roberto.
(2011)
Commercial Refrigeration.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
Hickman, Kenneth E.;
Calm, James M.;
Chen, Guangming;
Crawford, Jim;
Dorman, Dennis;
Pachai, Alexander C.;
Pearson, Andy;
Colbourne, Daniel;
Ohtsuki, Akira.
(2011)
Chillers.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
kaibara, Makoto;
Dieryckx, Martin;
Keller, Fred J.;
Calm, James M.;
Colbourne, Daniel;
Pachai, Alexander C.;
Hickman, Kenneth E.;
Nordman, Roger.
(2011)
Heat Pumps.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Nekså, Petter;
Keller, Fred J.;
Colbourne, Daniel;
Devotta, Sukumar;
Agarwal, Radhey;
Crawford, Jim;
Dieryckx, Martin;
kaibara, Makoto;
McInerney, Ed;
Nelson, Horace A.;
Vodianitskaia, Paulo.
(2011)
Air-to-Air Air Conditioners and Heat Pumps.
2010 REPORT OF THE REFRIGERATION, AIR CONDITIONING AND HEAT PUMPS TECHNICAL OPTIONS COMMITTEE.
Chapter
-
Tangen, Grethe;
Hemmingsen, Anne Karin;
Lorentsen, Odd-Arne;
Nekså, Petter.
(2011)
Energy efficiency in industry - a main path for increased value creation and sustainable energy use.
Proceedings of the 23rd International Congress of Refrigeration.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Christensen, Øystein Torp;
Nekså, Petter.
(2010)
Reversible R744 (CO2) heat pumps applied in public trains.
9th IIR-Gustav Lorentzen Conference on Natural Working Fluids.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Ladam, Yves;
Andresen, Trond;
Nekså, Petter.
(2010)
Experimental investigation of different ejector geometries for R-744 transcritical systems.
9th IIR-Gustav Lorentzen Conference on Natural Working Fluids.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter.
(2007)
Global environmental and economic benefits of introducing R-744 mobile air conditioning.
Proceedings : 22nd International Congress of Refrigeration : Refrigeration creates the future.
Academic chapter/article/Conference paper
-
Stene, Jørn;
Andresen, Trond;
Skiple, Torgeir;
Nekså, Petter.
(2007)
CO2 Heat pump system for combined heating and cooling of non-residential buildings.
Proceedings : 22nd International Congress of Refrigeration : Refrigeration creates the future.
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter.
(2006)
Global environmental consequences of introducing R-744 (CO2) mobile air conditioning.
7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006).
Academic chapter/article/Conference paper
-
Hafner, Armin;
Nekså, Petter.
(2006)
Globale Konsequenzen bei der Einführung von Fahrzeugklimaanlagen mit dem Kältemittel R-744.
Deutsche Kälte-Klima-Tagung 2006 Dresden.
Academic chapter/article/Conference paper
-
Nekså, Petter.
(2006)
Performance of CO2-refrigeration (R-744) in commercial cold drink equipment.
7th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2006).
Academic chapter/article/Conference paper
-
Nekså, Petter.
(2005)
Refrigeration sector.
IPCC/TEAP special report on safeguarding the ozone layer and the global climate system : issues related to hydrofluorocarbons and perfluorocarbons.
Academic chapter/article/Conference paper
-
Jakobsen, Arne;
Skaugen, Geir;
Skiple, Torgeir;
Nekså, Petter;
Andresen, Trond.
(2004)
Development and Evaluation of a Reversible CO2 Residential Air Conditioning System Compared to State-of-the-Art R410A Unit.
6th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2004).
Academic chapter/article/Conference paper
Report
-
Abdelaziz, Omar;
Carvalho, Suely;
Woodcock, Ashley;
Agyarko, Kofi;
Altoé, Paulo;
Bhambure, Jitendra;
Colbourne, Daniel;
Dohnt, Hilde;
Dreyfus, Gabrielle;
Elassaad, Bassam;
Gluckman, Ray;
Hamed, Samir;
Herlianika, Herlin;
Kujak, Steven;
Kumar, Saurabh;
Li, Tingxun;
Lord, Richard;
Nekså, Petter;
Okada, Tetsuji;
Olama, Mohamed Alaa;
Peixoto, Roberto;
Shah, Nihar;
Rajendran, Rajan;
Rochat, Helene.
(2022)
Montreal protocol on substances that deplete the ozon layer: report of the Technology and Economic Assessment Panel. Volume 3: Decision XXXIII/5 - Continued provision of information on energy-efficient and low-global-warming-potential technologies.
United Nations Environment Programme. 2022. ISBN 978-9966-076-95-3.
Report
-
Abdelaziz, Omar;
Elassaad, Bassam;
Bhambure, Jitendra;
Kuijpers, Lambert J.M.;
Nekså, Petter;
Pachai, Alexander C.;
Peixoto, Roberto;
Polonara, Fabio;
Rajendran, N..
(2021)
Montreal Protocol on Substances that Deplete the Ozone Layer : Report of the Refrigeration Technical Options Committee Vaccines Cold Chain Subcommittee Addendum to the TEAP 2021 Progress Report.
United Nations Environment Programme. 2021. ISBN 978-9966-076-90-8.
Report
-
Tomasgard, Asgeir;
Berstad, David Olsson;
Blekkan, Edd Anders;
Karstad, Per Ivar;
Burheim, Odne Stokke;
Dawson, James;
Espegren, Kari Aamodt;
Løvås, Terese;
Meyer, Julien;
Møller-Holst, Steffen;
Nekså, Petter;
Pollet, Bruno;
Størset, Sigmund Østtveit;
Sundseth, Kyrre;
Thomassen, Magnus;
Ulleberg, Øystein.
(2019)
Hydrogen i fremtidens lavkarbonsamfunn.
2019. ISBN 978-82-93198-31-4.
Report
-
Ervik, Åsmund;
Saai, Afaf;
Meyer, Ole;
Nekså, Petter.
(2018)
Modelling of mechanical and flow processes in compressors.
2018.
Report
-
Haukås, Hans T.;
Stene, Jørn;
Rekstad, Inge Håvard;
Nekså, Petter;
Hafner, Armin;
Eikevik, Trygve Magne.
(2016)
CO2 (R744) som kuldemedium.
2016.
Compendium
-
Elgsæther, Munan;
Nekså, Petter;
Skaugen, Geir;
Rekstad, Håvard.
(2002)
CO2 as refrigerant in beverage coolers, Evaluation and prototype testing.
2002. SINTEF Rapport (TRF5738).
Report
-
Pettersen, Jostein;
Nekså, Petter;
Rekstad, Håvard.
(2002)
Testing and evaluation of a condensing unit in a residential air conditioning system.
2002. SINTEF Rapport (TRF5686).
Report
-
Rekstad, Håvard;
Nekså, Petter.
(2002)
Testing and evaluation of CO2 compressors for the NBC project. Item 2. Compresosr tests at SINTEF.
2002. SINTEF Rapport (TRF5717).
Report
-
Nekså, Petter;
Bredesen, Arne Mathias.
(2000)
Short Course on CO2 Refrigeration Technology (SC7).
2000.
Compendium
-
Rekstad, Håvard;
Nekså, Petter;
Bredesen, Arne Mathias.
(1999)
Measurements on semi-hermetic pre-series CO2 compressors.
1999. ISBN 82-594-1675-1.
Report
-
Haukås, Hans;
Brendeng, Einar;
Lorentzen, Gustav;
Owren, Geir;
Nekså, Petter;
Aflekt, Kåre;
Jørstad, Oddvar;
Lystad, Tor;
Nesje, Odd;
Sandbakk, Marit.
(1994)
KFK-fri teknologi for kuldeanlegg og varmepumper : kompendiesamling nytt EEU-kurs.
1994.
Compendium
-
Nekså, Petter.
(1994)
Erstatningsmedier for HKFK-22.
1994.
Compendium
PRODUKT
-
Røkke, Petter Egil;
Nekså, Petter.
(2021)
Episode 393 – Om varmetap med Petter Røkke og Petter Nekså.
Teknisk ukeblad. 2021.
Sound material
-
Nekså, Petter.
(2020)
How CO2 Can Help The Climate.
SINTEF Energi AS. 2020.
Multimedia product
-
Nekså, Petter.
(2020)
Hydrogen can contribute to decarbonizing the European energy system.
SINTEF Energi. 2020.
Multimedia product
-
Nekså, Petter.
(2020)
Norsk teknologi kan kutte 0,5 grader global oppvarming!.
SINTEF Energi. 2020.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep1: Utnytte industriell overskuddsvarme.
SINTEF Energi, Facebook. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep1: Utnytte industriell overskuddsvarme.
SINTEF Energi. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep2: Hvor bruker man arbeidsmedier?.
SINTEF Energi. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep2: Hvor bruker man arbeidsmedier?.
SINTEF Energi. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep3: Er kunstige arbeidsmedier egentlig så farlige?.
SINTEF Energi, Facebook. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep3: Er kunstige arbeidsmedier egentlig så farlige?.
SINTEF Energi. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep4: CO2 som arbeidsmedium.
SINTEF Energi, Facebook. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep4: CO2 som kuldemedium.
SINTEF Energi. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep5: Arbeidsmedier og overskuddsvarme.
SINTEF Energi. 2018.
Multimedia product
-
Nekså, Petter.
(2018)
Naturlige arbeidsmedier Ep5: Konvertering av overskuddsvarme.
SINTEF Energi, Facebook. 2018.
Multimedia product
INFORMASJONSMATR
-
Nekså, Petter.
(2022)
Bør jeg kjøpe varmepumpe? Vil det lønne seg?.
Website (informational material)
-
Røkke, Petter Egil;
Kauko, Hanne;
Nekså, Petter.
(2022)
Industrial neighbours can share excess energy.
Website (informational material)
-
Gardarsdottir, Stefania Osk;
Nekså, Petter.
(2021)
Assumptions Matter When Assessing Blue & Green Hydrogen.
Website (informational material)
-
Røkke, Petter Egil;
Kauko, Hanne;
Nekså, Petter.
(2021)
Industrinaboer kan dele overskuddsenergi.
Website (informational material)
-
Berstad, David Olsson;
Nekså, Petter.
(2018)
Ambisiøse planer for hydrogen i Japan.
Website (informational material)
-
Nekså, Petter.
(2017)
FN-møte i Jordan for å fase ut klimagasser.
Website (informational material)
-
Nekså, Petter.
(2016)
What is the role for gas in the future?.
Website (informational material)
-
Jordal, Kristin;
Berstad, David Olsson;
Nekså, Petter.
(2015)
Hydrogen cars: The role of fossil fuels and CCS in a cleaner transport system.
Website (informational material)
-
Jordal, Kristin;
Berstad, David Olsson;
Nekså, Petter.
(2015)
The role of fossil fuels and CCS in a cleaner transport system.
Website (informational material)
-
Nekså, Petter.
(2015)
Energisk mellom Japan og Norge.
Briefs
Teaching
Courses
Media
2023
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InterviewNekså, Petter. (2023) Forsker og jazz-ildsjel fikk pris. Adresseavisen [Avis]. 2023-03-15.
2022
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InterviewNekså, Petter. (2022) 20 Twh overskuddsvarme slippes rett ut. Norsk Fjernvarme [Fagblad]. 2022-09-09.
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InterviewNekså, Petter. (2022) Consumer, Power | These power-saving measures have no effect in practice. Archenewsy [Internett]. 2022-11-08.
-
InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Nettavisen [Avis]. 2022-11-04.
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InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Sandnesposten [Avis]. 2022-11-04.
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InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Jærbladet [Avis]. 2022-11-04.
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InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Nordlys [Avis]. 2022-11-04.
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InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Telemarksavisa [Avis]. 2022-11-05.
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InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Gudgransdølen Dagningen [Avis]. 2022-11-05.
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InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Oppland Arbeiderblad [Avis]. 2022-11-05.
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InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Tidens krav [Internett]. 2022-11-05.
-
InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Arbeidets Rett [Avis]. 2022-11-05.
-
InterviewNekså, Petter. (2022) Disse strømspare-tiltakene har i praksis ingen effekt. Fredrikstad Blad [Avis]. 2022-11-06.
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InterviewNekså, Petter. (2022) Disse strømsparetiltakene har i praksis ingen effekt. Moss Avis [Avis]. 2022-11-14.
-
InterviewNekså, Petter. (2022) Disse strømsparetiltakene har i praksis ingen effekt. Vestby Avis [Avis]. 2022-11-10.
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InterviewNekså, Petter. (2022) Industrien fyrer for kråkene. Aftenposten [Avis]. 2022-09-10.
-
InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. MN24 [Fagblad]. 2022-09-09.
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InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. Dagens Perspektiv [Avis]. 2022-09-09.
-
InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. Byggeindustrien [Fagblad]. 2022-09-09.
-
InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. DN [Avis]. 2022-09-19.
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InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. Stavanger Aftenblad [Avis]. 2022-09-10.
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InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. Adresseavisen [Avis]. 2022-09-10.
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InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. Oppland Arbeiderblad [Avis]. 2022-09-10.
-
InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. Fremover [Internett]. 2022-09-09.
-
InterviewNekså, Petter. (2022) Norsk industri fyrer fortsatt for kråkene. NRK [Internett]. 2022-09-09.
-
InterviewNekså, Petter. (2022) Norsk industri fyrer framleis for kråkene. Kvinnheringen [Avis]. 2022-09-09.
-
InterviewNekså, Petter. (2022) Norsk industri fyrer framleis for kråkene. Nordre [Avis]. 2022-09-09.
-
InterviewNekså, Petter. (2022) Norsk industri fyrer framleis for kråkene. Møre-nytt [Avis]. 2022-09-12.
-
InterviewNekså, Petter. (2022) Sett aldri varmepumpa på «Auto». TU [Fagblad]. 2022-06-18.
-
InterviewNekså, Petter. (2022) Sett aldri varmepumpa på «auto». Fagpressenytt [Internett]. 2022-06-16.
-
InterviewNekså, Petter. (2022) Sett aldri varmepumpa på «auto». forskersonen [Internett]. 2022-06-16.
-
InterviewNekså, Petter. (2022) Strømkrisen til tross – industrien fyrer for kråkene. TU [Fagblad]. 2022-09-09.
-
InterviewNekså, Petter; Røkke, Petter Egil. (2022) 20 Twh overskuddsvarme slippes rett ut. Norsk fjernvarme [Fagblad]. 2022-09-09.
2021
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Academic lectureErvik, Åsmund; Saai, Afaf; Berstad, Torodd; Meyer, Ole; Tsuji, Takuma; Oku, Tatsuya; Hattori, Kazuhiro; Yamada, Kazuya; Delhaye, Virgile Roger; Nekså, Petter. (2021) Modelling the dynamics of ring plate valves in reciprocating compressors using coupled CFD-FEM simulations. 10th International Conference on Compressors and Coolants . Slovak Association for Cooling and Air Conditioning Tech.; 2021-01-13 - 2021-01-15.
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InterviewNekså, Petter. (2021) Millilardprosjekt skal gjera Barents-gass til ein del av klimaløysinga. Stavanger Aftenblad [Avis]. 2021-06-01.
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InterviewRøkke, Petter Egil; Nekså, Petter. (2021) Norge mister 20 TWh årlig i varmetap – disse forskerne vil bruke energien i stedet. null [Fagblad]. 2021-11-04.
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InterviewRøkke, Petter Egil; Nekså, Petter; Knudsen, Brage Rugstad. (2021) Vi kan bruke spillvarme til å lage norske avokadofarmer. Dagens Næringslilv [Avis]. 2021-03-25.
2020
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InterviewNekså, Petter. (2020) Bedre HVAC-systemer kan hjelpe hotellnæringen. VVS Aktuelt [Fagblad]. 2020-06-17.
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InterviewNekså, Petter. (2020) Historien om CO2 som kjølemedium. sintef.no [Internett]. 2020-06-03.
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InterviewNekså, Petter. (2020) Norske hoteller kan redusere strømregningen med hele 44 prosent. ITBA Aktuelt [Internett]. 2020-06-18.
-
InterviewNekså, Petter. (2020) Slik kan hotellene halvere strømregningen. enerWE [Fagblad]. 2020-06-17.
-
InterviewNekså, Petter. (2020) Standard for brannfarlige kuldemedier i varmepumper til avstemning. VVSFORUM [Fagblad]. 2020-10-21.
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InterviewNekså, Petter. (2020) Standard for brannfarlige kuldemedier i varmepumper til avstemning. VVS aktuelt [Fagblad]. 2020-10-21.
-
InterviewNekså, Petter. (2020) The story of CO2 as a refrigerant. sintef.no [Internett]. 2020-04-20.
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LectureNekså, Petter; Andresen, Trond. (2020) FME HighEFF – Anlegg for utnyttelse av overskuddsvarme til kraftproduksjon. Norsk Kjøleteknisk Møte 2020 . Norsk Kjøleteknisk Forening - Tekna; Clarion Hotell og Konferansesenter, Trondheim. 2020-10-29 - 2020-10-29.
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LectureNikolaisen, Monika; Nekså, Petter. (2020) Measuring achievement of the HighEFF overall goals. HighEFF Annual Consortium Meeting 2020 ; 2020-05-13 - 2020-05-13.
2019
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LectureErvik, Åsmund; Saai, Afaf; Meyer, Ole; Nekså, Petter. (2019) Dynamic modelling of compressor ring plate valve behaviour with CFD and FEM. HighEFF Annual Consortium Meeting 2019 . SINTEF Energi; Trondheim. 2019-05-08 - 2019-05-09.
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InterviewNekså, Petter. (2019) Skal berge skiløypene. NRK [Internett]. 2019-04-15.
-
InterviewNekså, Petter. (2019) VM-stadionet forurenser like mye hver dag som å kjøre bil 20 ganger rundt ekvator. NRK [Internett]. 2019-10-04.
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LectureSkjervold, Vidar T.; Andresen, Trond; Skaugen, Geir; Nekså, Petter. (2019) Novel heat recovery concept development. Practical vs. Academic approach to Energy Recovery ; 2019-10-22.
2018
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Academic lectureBamigbetan, Opeyemi Olayinka; Eikevik, Trygve Magne; Nekså, Petter; Bantle, Michael; Schlemminger, Christian; Dallai, Mauro. (2018) Experimental Investigation of a Hydrocarbon Piston Compressor for High Temperature Heat Pumps. 24th International Compressor Engineering Conference ; Purdue. 2018-07-12.
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Academic lectureBerstad, David Olsson; Anantharaman, Rahul; Wilhelmsen, Øivind; Skjervold, Vidar T.; Nekså, Petter. (2018) Large-Scale Hydrogen Production and Liquefaction for Regional and Global Export. International Hydrogen and Fuel Cells Conference . SINTEF, NTNU; Trondheim. 2018-05-14 - 2018-05-15.
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LectureBerstad, David Olsson; Nekså, Petter; Størset, Sigmund Østtveit. (2018) Large-scale decarbonised hydrogen production. Offshore Northern Seas (ONS) 2018 ; 2018-08-27 - 2018-08-30.
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PosterBerstad, David Olsson; Wilhelmsen, Øivind; Voldsund, Mari; Nekså, Petter; Ishimoto, Yuki. (2018) Large-scale co-production of liquid hydrogen from fossil and renewable energy. 22nd World Hydrogen Energy Conference ; 2018-06-17 - 2018-06-22.
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LectureClaussen, Ingrid Camilla; Røyrvik, Jens Olgard Dalseth; Nekså, Petter. (2018) Role of Industry Clusters for improving energy efficiency. 10th KIFEE symposium . Kifee Kyoto Norway Centre; Norwegian Coastal Express/Tromsø. 2018-10-05 - 2018-10-08.
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LectureIshimoto, Yuki; Voldsund, Mari; Berstad, David Olsson; Nekså, Petter. (2018) Value chain analysis for long distance transport of hydrogen carriers. 22nd World Hydrogen Energy Conference ; 2018-06-17.
-
LectureIshimoto, Yuki; Voldsund, Mari; Berstad, David Olsson; Nekså, Petter; Iida, Shigeki. (2018) Value chain analysis of long-distance hydrogen transport. 10th Kyoto International forum for energy and environment symposium (KIFEE-10) ; 2018-10-05.
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Academic lectureKauko, Hanne; Selvnes, Håkon; Knudsen, Brage Rugstad; Hafner, Armin; Nekså, Petter. (2018) Thermal storage for improved energy efficiency in the industry. 10th KIFEE symposium . NTNU og University of Doshisha; MS Finnmarken. 2018-10-05 - 2018-10-08.
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InterviewNekså, Petter. (2018) Det blir mer klimavennlig snø. Skiforbundet [Fagblad]. 2018-12-11.
-
InterviewNekså, Petter. (2018) We skiën tegen de klippen op. trouw.nl [Fagblad]. 2018-12-02.
-
InterviewNekså, Petter; Berstad, David Olsson; Størset, Sigmund Østtveit. (2018) Fossil hjelp til grønt skifte. Dagens Næringsliv [Avis]. 2018-05-25.
2017
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LectureAndresen, Trond; Nekså, Petter. (2017) Thermodynamics for dummies. HighEff Annual Consortium Meeting 2017 . SINTEF Energi AS; Trondheim. 2017-06-19 - 2017-06-20.
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LectureBamigbetan, Opeyemi Olayinka; Eikevik, Trygve Magne; Nekså, Petter; Bantle, Michael. (2017) Extending ammonia high temperature heat pump using butane in a cascade system. 7th Conference on Ammonia and CO2 Refrigeration Technologies . Faculty of Mechanical Engineering - Skopje; Ohrid. 2017-05-11 - 2017-05-13.
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LectureBamigbetan, Opeyemi Olayinka; Eikevik, Trygve Magne; Nekså, Petter; Bantle, Michael; Banasiak, Krzysztof. (2017) Extending Hydrocarbon Heat Pumps to Higher Temperatures: Predictions from Simulations. 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems ; San Diego. 2017-07-02 - 2017-07-06.
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Academic lectureBerstad, David Olsson; Wilhelmsen, Øivind; Skjervold, Vidar T.; Nekså, Petter. (2017) Cryogenic CO2 condensation and membrane separation of syngas for large-scale LH2 production. 14th CRYOGENICS 2017 IIR International Conference . IIR; Dresden. 2017-05-15 - 2017-05-19.
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Academic lectureClos, Daniel Perez; Gaertner, Heiko; Nekså, Petter; Johnsen, Sverre Gullikstad; Aune, Ragnhild Elizabeth. (2017) DESIGN OF A COOLED FOULING PROBE TO INVESTIGATE SCALING MECHANISMS FROM THE ALUMINIUM PRODUCTION OFF-GAS. Heat Exchanger Fouling and Cleaning XII . HTRI; Madrid. 2017-06-11 - 2017-06-16.
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Academic lectureClos, Daniel Perez; Nekså, Petter. (2017) Heat recovery from Al off-gases. SFI høst møte 2017 . NTNU-IMA; Trondheim. 2017-11-07 - 2017-11-08.
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Academic lectureClos, Daniel Perez; Nekså, Petter; Johnsen, Sverre Gullikstad; Aune, Ragnhild Elizabeth. (2017) Scaling in Heat Recovery Systems for Aluminium Production Off-Gas. SFI vår møte 2017 ; 2017-04-25 - 2017-04-26.
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Academic lectureKauko, Hanne; Nordtvedt, Stein Rune; Nekså, Petter; Bantle, Michael. (2017) High-temperature heat pumps based on natural working fluids to produce district heating from industrial waste heat. 7th Conference on Ammonia and CO2 Refrigeration Technologies . International Institute of Refrigeration (IIR); Ohrid. 2017-05-11 - 2017-05-13.
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InterviewNekså, Petter. (2017) - Vet at alle i skisporten er opptatt av snøtilgang. Adresseavisen [Avis]. 2017-11-14.
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InterviewNekså, Petter. (2017) A Norwegian project: Snow for the future. JARN [Internett]. 2017-06-06.
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InterviewNekså, Petter. (2017) A future for skiing in a warmer world. Science Daily [Tidsskrift]. 2017-02-01.
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InterviewNekså, Petter. (2017) A future for skiing in a warmer world. AlphaGalileo [Tidsskrift]. 2017-02-01.
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InterviewNekså, Petter. (2017) «Det var alltid veldig mye snø da jeg var liten». Fredrikstad blad [Avis]. 2017-01-28.
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InterviewNekså, Petter. (2017) Erik Røste, skipresident, Norges skiforbund, er bekymret for fremtiden. NRK Dagsrevyen [TV]. 2017-01-28.
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InterviewNekså, Petter. (2017) Får millioner for å lage snø i varmen. E24 [Avis]. 2017-02-04.
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Academic lectureNekså, Petter. (2017) GAS TO MARKET –HOW TO OVERCOME THE DISTANCE FROM REMOTE PRODUCTION. Arctic Frontiers - The Offshore Arctic under Lower Oil Prices . Arctic Frontiers and IEA Global Techn Coll. Progr. (IEA GOT); Tromsø. 2017-01-25 - 2017-01-26.
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InterviewNekså, Petter. (2017) Klimaforsker: – Det var lengre vintre og mer snø før. amta.no [Internett]. 2017-01-28.
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InterviewNekså, Petter. (2017) Kolumne "nachgeforscht": Grüner gleiten. Maerkische Oderzeitung [Fagblad]. 2017-03-20.
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InterviewNekså, Petter. (2017) Kolumne "nachgeforscht": Grüner gleiten. Märkische online zeitung [Fagblad]. 2017-02-11.
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InterviewNekså, Petter. (2017) Kuldeteknikk. TV2 Nyhetskanalen [TV]. 2017-02-22.
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LectureNekså, Petter. (2017) Low carbon solutions for the blue economy: The role of technology and innovation. Arctic Frontiers, Arctic Environment Forum . Arctic Frontiers Secretariat; Tromsø. 2017-01-23 - 2017-01-26.
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InterviewNekså, Petter. (2017) MØRKE UTSIKTER. Dagbladet Magasinet [Avis]. 2017-04-08.
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InterviewNekså, Petter. (2017) Norway saves skiing with climate-friendly snow. Scandinavian Times [Avis]. 2017-02-12.
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InterviewNekså, Petter. (2017) Norway saves skiing with climate-friendly snow. Environmentalresearchweb [Internett]. 2017-02-16.
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InterviewNekså, Petter. (2017) Norwegian eco snow machines secure the future of skiing. Association Iinternationale de la Presse Sportive [Fagblad]. 2017-02-17.
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InterviewNekså, Petter. (2017) Skisporten skal reddes med snøproduksjon. sportsbransjen.no [Internett]. 2017-01-25.
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InterviewNekså, Petter. (2017) Will future skiers rely on heat pumps?. CoolingPost [Fagblad]. 2017-02-15.
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LectureNekså, Petter; Berstad, David Olsson. (2017) Hyper, potential for large scale hydrogen production for export from Norway. Japan-Norway Hydrogen seminar “Collaboration within hydrogen future market and value chain” . Norges forskningsråd, Innovasjon Norge, Norges amb. i Japan; Tokyo. 2017-02-28 - 2017-02-28.
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LectureNekså, Petter; Berstad, David Olsson; Størset, Sigmund Østtveit. (2017) Large scale hydrogen production from natural gas in Norway - a possibility for sustainable value creation based on Norwegian energy resources. Smart Gas 2017 . Tekna; Oslo. 2017-05-10 - 2017-05-11.
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LectureNekså, Petter; Fosso, Olav B. (2017) Strategic Research Area 2014-2023 NTNU ENERGY. Norway-Japan KIFEE-9, Symposium 2017 . KIFEE, Doshisha University; Kyoto. 2017-03-07 - 2017-03-10.
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LectureNekså, Petter; Hemmingsen, Anne Karin Torstveit. (2017) FME HighEFF-Centre for an Energy Efficient and Competitive Industry for the Future –aktivitet relatert til norsk kjølebransje. Norsk Kjøleteknisk Møte 2017 . Norsk Kjøleteknisk Forening - Tekna; Trondheim. 2017-04-20 - 2017-04-21.
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LectureNekså, Petter; Hemmingsen, Anne Karin Torstveit. (2017) HighEFF-Centre for an Energy Efficient and Competitive Industry for the Future. Norway-Japan KIFEE-9 Symposium 2017 . KIFEE, Doshisha University; Kyoto. 2017-03-07 - 2017-03-10.
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InterviewNekså, Petter; Røkke, Nils Anders. (2017) Klimaændringer truer Norges nationalsport: Nu vil nordmændene opfinde ’grøn’ kunstsne. DR.dk [Internett]. 2017-01-19.
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InterviewNekså, Petter; Stang, Hans Georg Jacob. (2017) Norwegian eco snow machines secure the future of skiing. Climateaction.org [Internett]. 2017-02-13.
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InterviewNekså, Petter; Stang, Jacob H; Eikevik, Trygve Magne. (2017) A future for skiing in a warmer world. geminiresearchnews.com [Tidsskrift]. 2017-02-02.
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InterviewRøkke, Nils Anders; Nekså, Petter. (2017) Skal redde skisporten – i plussgrader. abc nyheter [Internett]. 2017-01-19.
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Academic lectureWilhelmsen, Øivind; Skaugen, Geir; Berstad, David Olsson; Aasen, Ailo; Nekså, Petter. (2017) Understanding the physical phenomena that occur inside heat exchangers for liquefaction of hydrogen. 14th CRYOGENICS 2017 IIR International Conference . IIR; Dresden. 2017-05-15 - 2017-05-19.
2016
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InterviewBantle, Michael; Nekså, Petter; Benjaminsen, Christina. (2016) Gjør gull av spillvarme. Kule og Varmepumper [Fagblad]. 2016-04-01.
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LectureBerstad, David Olsson; Nekså, Petter. (2016) Liquefied hydrogen production from surplus wind/hydro power and fossil sources in Norway. Hydrogenkonferanse Sogn og Fjordane 2016 . Maritim Forening Sogn og Fjordane m.fl.; Florø. 2016-10-19 - 2016-10-20.
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Academic lectureBerstad, David Olsson; Nekså, Petter; Voldsund, Mari; Wilhelmsen, Øivind; Korpås, Magnus. (2016) Liquefied Hydrogen Production and Export in Norway. 4th Trondheim Gas Technology Conference . The Gas Technology Centre NTNU-SINTEF; Trondheim. 2016-12-05 - 2016-12-05.
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Academic lectureBerstad, David Olsson; Roussanaly, Simon; Anantharaman, Rahul; Nekså, Petter; Jakobsen, Jana Poplsteinova. (2016) Techno-economic evaluation of a low-temperature CO2 capture unit for IGCC Plants. 22nd International Congress of Chemical and Process Engineering ; 2016-08-27 - 2016-08-31.
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Academic lectureBerstad, David Olsson; Roussanaly, Simon; Anantharaman, Rahul; Nekså, Petter; Jakobsen, Jana Poplsteinova. (2016) Techno-economic evaluation of a low-temperature CO2 capture unit for IGCC Plants. 8th International Freiberg Conference on IGCC & XtL Technologies ; 2016-06-12 - 2016-06-16.
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Academic lectureClos, Daniel Perez; Nekså, Petter; Johnsen, Sverre Gullikstad; Aune, Ragnhild Elizabeth. (2016) PhD Heat recovery from Al pot gas and scaling issues. SFI høst møte 2016 ; 2016-10-25 - 2016-10-26.
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Academic lectureNekså, Petter. (2016) CO2 in the Commercial Refrigeration Sector, Including High Ambient Temperatures. MOP 28 Kigali, Side event: Opportunities for A5 Countries to Leapfrog to Long-Term Sustainable Alternatives Based on Natural Refrigerants . Joint Indo-Norwegian arranged side-event; Kigali. 2016-10-13 - 2016-10-13.
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LectureNekså, Petter. (2016) HighEFF Work Plans. FME HighEFF Kick-off . SINTEF Energy Research; Gardermoen. 2016-11-28 - 2016-11-28.
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LectureNekså, Petter. (2016) HighEFF, energiforskning for industriell, grønn konkurransekraft. Industri 2016 . Norsk Industri; Bodø. 2016-09-28 - 2016-09-29.
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InterviewNekså, Petter. (2016) Hydrogenvei til Japan. Energi og Klima.no [Internett]. 2016-06-14.
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InterviewNekså, Petter. (2016) NEL ASA starts feasibility study for large-scale hydrogen production in Norway. CTBR Energy Management Transport Sustainability [Internett]. 2016-04-05.
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InterviewNekså, Petter. (2016) NEL announces initiation of feasibility partner study for large-scale hydrogen production in Norway. Bloomberg [Internett]. 2016-04-15.
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InterviewNekså, Petter. (2016) Nel Asa Initiates Feasibility Study for Hydrogen Export. Process wordwide [Fagblad]. 2016-04-20.
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InterviewNekså, Petter. (2016) Nå kan Norge få storstilt produksjon av hydrogen. sysla grønn [Fagblad]. 2016-04-14.
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InterviewNekså, Petter; Hemmingsen, Anne Karin Torstveit. (2016) - La naturens egne stoffer overta som kjølegasser. ITBAktuelt [Internett]. 2016-10-28.
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InterviewNekså, Petter; Hemmingsen, Anne Karin Torstveit. (2016) CO2 gir grønn kjøling. GEMINI [Fagblad]. 2016-10-21.
2015
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InterviewBenjaminsen, Christina; Bantle, Michael; Nekså, Petter. (2015) Gjør gull av spillvarme. byggfakta.no [Internett]. 2015-07-09.
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InterviewBenjaminsen, Christina; Bantle, Michael; Nekså, Petter. (2015) Gjør gull av spillvarme. petro.no [Internett]. 2015-07-07.
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InterviewBergh, Nicholas; Løfaldi, Reidar; Nekså, Petter. (2015) Norske klimaeksperter skal redde skisporten. Aftenposten side 19-20 [Avis]. 2015-03-05.
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LectureBerstad, David Olsson; Roussanaly, Simon; Skaugen, Geir; Anantharaman, Rahul; Nekså, Petter; Jordal, Kristin; Jakobsen, Jana Poplsteinova. (2015) Energy and cost evaluation of a low-temperature CO2 capture unit for IGCC plants. Pittsburgh Coal Conference . University Of Pittsburgh; Pittsburgh. 2015-10-05 - 2015-10-08.
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Academic lectureJin, Zhequan; Eikevik, Trygve Magne; Nekså, Petter; Hafner, Armin. (2015) Investigation on CO2 ground-coupled heat pumping system for buildings under cold climate. Proceedings of 8th International Cold Climate HVAC Conference ; 2015-10-20 - 2015-10-23.
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LectureNekså, Petter. (2015) Conversion of surplus heat in industry. Japan-Norway Energy Science Week 2015 . Norwegian Embassy, The Research Council of Norway, SIU, IN; Tokyo Int Exchange Center. 2015-05-27 - 2015-05-28.
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LectureNekså, Petter. (2015) Non-HFC refrigerants in small and medium-sized air-conditioning and heat pump systems. Workshop on Management of HFCs: Technical Issues . UNEP; Bangkok. 2015-04-20 - 2015-04-21.
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LectureNekså, Petter. (2015) Sites and concepts for possible hydrogen production and export from Norway. Japan-Norway Energy Science Week 2015 . Norwegian Embassy, Research Council of Norway, SIU, IN; Tokyo Int Exchange Center. 2015-05-27 - 2015-05-28.
2014
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Academic lectureBerstad, David Olsson; Lindqvist, Karl; Nekså, Petter; Roussanaly, Simon. (2014) Natural gas sweetening by additive-aided extractive distillation for CO2 freezing point depression. 3rd Trondheim Gas Technology Conference ; 2014-06-04 - 2014-06-05.
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LectureBerstad, David Olsson; Roussanaly, Simon; Skaugen, Geir; Anantharaman, Rahul; Nekså, Petter; Jordal, Kristin. (2014) Energy and cost evaluation of a low-temperature CO2 capture unit for IGCC plants. GHGT-12 . IEAGHG; Austin, TX. 2014-10-05 - 2014-10-09.
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Academic lectureJordal, Kristin; Anantharaman, Rahul; Peters, Thijs; Berstad, David Olsson; Morud, John Christian; Nekså, Petter; Bredesen, Rune. (2014) High‐purity H2 production with CO2 capture based on coal gasification. 27th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems ; Turku. 2014-06-15 - 2014-06-19.
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LectureRoussanaly, Simon; Anantharaman, Rahul; lindqvist, karl; Nekså, Petter. (2014) Multi-criteria analyses of two solvent and one low-temperature concepts for acid gas removal from natural gas. Trondheim Gas Technology Conference 3 . SINTEF Energy Research; Trondheim. 2014-06-04 - 2014-06-05.
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Academic lectureSkaugen, Geir; Walnum, Harald Taxt; Hagen, Brede Andre Larsen; Clos, Daniel Perez; Mazzetti, Marit Jagtoyen; Nekså, Petter. (2014) DESIGN AND OPTIMIZATION OF WASTE HEAT RECOVERY UNIT USING CARBON DIOXIDE AS COOLING FLUID. ASME Power 2014 Conference . ASME; Baltimore, Maryland. 2014-07-28 - 2014-07-31.
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Academic lectureYamaguchi, Hiroshi; Iwamoto, Yuhiro; Ozaki, S; Nekså, Petter. (2014) EXPERIMENTAL OBSERVATION OF SEDIMENTATION PHENOMENA OF CO2 DRY ICE IN MODEL CHANNEL. 11th IIR-Gustav Lorentzen Conference on Natural Refrigerants GL2014 . International Institute of Refrigeration; Hangzhou. 2014-08-31 - 2014-09-02.
2013
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Academic lectureBerstad, David Olsson; Anantharaman, Rahul; Nekså, Petter. (2013) Integrated low-temperature CO2 capture from IGCC power plant by partial condensation and separation of syngas. 16th Conference Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES13) ; Rhodos. 2013-09-29 - 2013-10-02.
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Academic lectureMazzetti, Marit Jagtoyen; Nekså, Petter; Walnum, Harald Taxt; Hemmingsen, Anne Karin. (2013) Novel Energy Efficiency Technologies for Reduction of Offshore CO2 Emissions. OTC 2013 . OTC; Houston. 2013-05-06 - 2013-05-08.
2012
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PosterBerstad, David Olsson; Anantharaman, Rahul; Nekså, Petter. (2012) Low-temperature CCS from an IGCC power plant and comparison with physical solvents. 11th International Conference on Greenhouse Gas Control Technologies (GHGT-11) . IEAGHG; Kyoto. 2012-11-18 - 2012-11-22.
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PosterBerstad, David Olsson; Quack, Hans; Walnum, Harald Taxt; Drescher, Michael; Stang, Hans Georg Jacob; Nekså, Petter; Haberstroh, Christoph; Decker, Lutz; Michael, Börsch; Holdener, Fridolin. (2012) Design Principles for High-Efficiency Hydrogen Liquefaction Processes. World Hydrogen Energy Conference 2012 ; 2012-06-03 - 2012-06-07.
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Academic lectureHafner, Armin; Poppi, Stefano; Nekså, Petter; Eikevik, Trygve Magne; Minetto, Silvia. (2012) Development of Commersial Refrigeration Systems with Heat Recovery for Supermaket Buildings. 10th Gustav Lorentzen Conference on Natural Working Fluids . International Institute of Refrigeration; Delfts. 2012-06-24 - 2012-06-24.
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Academic lectureHafner, Armin; Schmälzle, Christian; Nekså, Petter; Obrist, Frank; Rekstad, Inge Håvard. (2012) High Efficient 100 kW(el) R744 Compressor. 10th IIR Gustav Lorentzen Conference on Natural Refrigerants . International Institute of Refigeration (IIR); Delft. 2012-06-24 - 2012-06-27.
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Academic lectureNekså, Petter; Stolzenburg, Klaus. (2012) Making Hydrogen Liquefaction more competitive: Overview of the Project and of the Supply Pathways considered. World Hydrogen Energy Conference (WHEC) ; Toronto. 2012-06-03 - 2012-06-07.
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Academic lectureQuack, Hans; Essler, Jürgen; Haberstroh, Christoph; Walnum, Harald Taxt; Berstad, David Olsson; Drescher, Michael; Nekså, Petter. (2012) Search for the Best Processes to Liquefy Hydrogen in Very Large Plants. IIR Cryogenics 2012 ; Dresden. 2012-09-11 - 2012-09-14.
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PosterQuack, Hans; Haberstroh, Christoph; Essler, Jürgen; Nekså, Petter; Berstad, David Olsson; Drescher, Michael; Stang, Hans Georg Jacob; Walnum, Harald Taxt; Decker, Lutz; Treite, Phillip. (2012) Boundary Conditions and assumptions Influencing the Power Needed to Liquefy Hydrogen. World Hydrogen Energy Conference 2012 ; 2012-06-03 - 2012-06-07.
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Academic lectureWalnum, Harald Taxt; Berstad, David Olsson; Nekså, Petter; Drescher, Michael; Quack, Hans; Haberstroh, Christoph; Essler, Jürgen. (2012) Principles for the Liquefaction of Hydrogen with Emphasis on Precooling Processes. IIR Cryogenics 2012 ; Dresden. 2012-09-11.
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PosterWalnum, Harald Taxt; Berstad, David Olsson; Nekså, Petter; Drescher, Michael; Stang, Hans Georg Jacob. (2012) Mixed Refrigerants for High Efficiency Hydrogen Pre-cooling. World Hydrogen Energy Conference 2012 ; 2012-06-03.
2011
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Academic lectureBerstad, David Olsson; Nekså, Petter; Anantharaman, Rahul. (2011) CO2 capture from IGCC by low-temperature syngas separation and partial condensation of CO2. The 6th Trondheim CCS Conference . SINTEF Energi AS; Trondheim. 2011-06-14 - 2011-06-16.
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Academic lectureBerstad, David Olsson; Nekså, Petter; Anantharaman, Rahul. (2011) CO2 capture from IGCC by lowtemperature syngas separation and partial condensation of CO2. 6th Trondheim CCS Conference . SINTEF Energi; Trondheim. 2011-06-14 - 2011-06-16.
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Academic lectureBerstad, David Olsson; Nekså, Petter; Anantharaman, Rahul. (2011) Potential for low-temperature capture technologies in different CCS applications. The 6th Trondheim CCS Conference . SINTEF Energi AS; Trondheim. 2011-06-14 - 2011-06-16.
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Academic lectureBerstad, David Olsson; Nekså, Petter; Anantharaman, Rahul. (2011) Potential for low-temperature capture technologies in different CCS applications. 6th Trondheim CCS Conference . SINTEF Energi; Trondheim. 2011-06-14 - 2011-06-16.
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Academic lectureBerstad, David Olsson; Roussanaly, Simon; Nekså, Petter; Anantharaman, Rahul. (2011) Low temperature CO2 removal from natural gas. 2nd Trondheim Gas Technology Conference . The Gas Technology Centre NTNU-SINTEF; Trondheim. 2011-11-02 - 2011-11-03.
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Academic lectureBerstad, David Olsson; Roussanaly, Simon; Nekså, Petter; Anantharaman, Rahul. (2011) Low-temperature CO2 removal from natural gas. 2nd Trondheim Gas Technology Conference . Gas Technology Centre NTNU-SINTEF; Trondheim. 2011-11-02 - 2011-11-03.
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Academic lectureHafner, Armin; Nekså, Petter; Ladam, Yves; Eikevik, Trygve Magne. (2011) Oil-Free R744 Systems for Industrial/Commersial Applications. The 23rd International Congress of Refrigeration . IIR International Institute of Refrigeration; Prague. 2011-08-22 - 2011-08-26.
2009
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Academic lectureBerstad, David Olsson; Stang, Hans Georg Jacob; Nekså, Petter. (2009) A future energy chain based on liquefied hydrogen. Hydrogen and Fuel Cells in the Nordic Countries – 2009 . Norwegian Hydrogen Forum; Oslo. 2009-11-24 - 2009-11-26.
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Academic lectureBerstad, David Olsson; Stang, Hans Georg Jacob; Nekså, Petter. (2009) A future energy chain based on liquefied hydrogen. 1st Trondheim Gas Technology Conference . Gas Technology Centre (NTNU-SINTEF); NOVA. 2009-10-21 - 2009-10-22.
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Academic lectureNekså, Petter. (2009) CREATIV - Efficient Heating and Cooling. CREATIV Research Workshop . SINTEF Energy Research; Trondheim. 2009-11-23 - 2009-11-23.
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Academic lectureNekså, Petter. (2009) Japanske husstander varmer opp vann med varmepumper - Hvilke perspektiver gir CO2 som kuldemedium?. Nordiske varmepumpedager 2009 . NOVAP og andre nordiske varmepumpeforeninger; Oslo. 2009-06-04 - 2009-06-05.
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Academic lectureNekså, Petter. (2009) Refrigeration Technology with CO2 and Other Natural Refrigerants. KIFFE Symposium 2009 . NTNU; Trondheim. 2009-09-07 - 2009-09-09.
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Academic lectureNekså, Petter; Ladam, Yves. (2009) Spillvarme - en kilde til kraftproduksjon -- Waste heat – a source for power production. Enovas Industrikonferanse 2009 . Enova SF; Trondheim. 2009-11-30 - 2009-12-01.
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Academic lectureNekså, Petter; Ladam, Yves. (2009) Strømproduksjon fra lavtemperatur spillvarme - Power production from low temperature surplus heat. Energiuka 2009 . NFR, Enova,; Oslo. 2009-02-04 - 2009-02-05.
2008
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Academic lectureHafner, Armin; Nekså, Petter. (2008) Global environmental & economic benefits of introducing R744 mobile air conditioning. MAC-Summit-Shanghai-2008 ; Shanghai. 2008-01-01 - 2008-01-02.
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Academic lectureNekså, Petter. (2008) CO2 as Refrigerant, Current and Future Applications and Basic Research Needs. EPRI Workshop to Assess Basic Science Research Needs . Electricity and Power Research Institute EPRI, USA; Charlotte, NC, USA. 2008-01-15 - 2008-01-16.
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Academic lectureNekså, Petter. (2008) Refrigeration: Perspectives, NH3 and CO2 as natural refrigerants. 2008 Refrigeration Year, AFF-IIR Centenary, 100 years at the service of the development of refrigeration and its applications . International Institute of Refrigeration; Paris, France. 2008-06-12 - 2008-06-12.
2007
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Academic lectureRekstad, Inge Håvard; Nekså, Petter (SINTEF). (2007) Smøremidler for CO2 anlegg. Kveldsmøte . Norsk Kjøleteknisk Forening; Oslo. 2007-11-01 - 2007-11-01.
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Academic lectureStene, Jørn; Jakobsen, Arne (SINTEF); Andresen, Trond; Skiple, Torgeir (SINTEF); Nekså, Petter (SINTEF). (2007) CO2 Heat Pump for Combined Heating and Cooling of Non-Residential Buildings. 22nd IIR/IIF International Congress of Refrigeration . International Institute of Refrigeration; Bejing. 2007-08-22 - 2007-08-26.
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Academic lectureEikevik, Trygve Magne; Rekstad, Håvard (NTNU); Skaugen, Geir (SINTEF); Jakobsen, Arne (SINTEF); Nekså, Petter (SINTEF). (2007) Prototype Liquid Chiller Using Carbon Dioxide as Refrigerant. 22nd International Congress of Refrigeration . China Assisiation of Refrigeration; Beijing. 2007-08-21 - 2007-08-26.
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Academic lectureHafner, Armin; Nekså, Petter. (2007) Global environmental & economic benefits of introducing R744 mobile air conditioning. 2nd International Workshop on Mobile Air Conditioning and Auxiliary Systems . ATA; Torino. 2007-10-29 - 2007-11-30.
2006
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Academic lectureHafner, Armin; Nekså, Petter. (2006) Factors influencing life cycle environmental impact calculations of MACs. MAC-Summit-Saafelden-2006 ; Saalfelden. 2006-02-15 - 2006-02-16.
2005
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Academic lectureZha, Shitong; Hafner, Armin (SINTEF); Nekså, Petter (SINTEF). (2005) Study on Transcritical R-744 (CO2) Voorhees Heat Pump Cycle. IIR International Conference on Commercial Refrigeration, Vicenza . International Institute of Refrigeration (IIR); Vicenza. 2005-08-30 - 2005-08-31.
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Academic lectureHafner, Armin; Nekså, Petter. (2005) R744 (CO2) Technology Maturity and Availability. Workshop on Technology Cooperation for Next-Generation Mobile Air Conditioning ; New Delhi. 2005-03-03 - 2005-03-05.
2004
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Academic lectureJakobsen, Arne; Skaugen, Geir; Skiple, Torgeir; Nekså, Petter; Andresen, Trond. (2004) Development and Evaluation of a Reversible CO2 Residential Air Conditioning System Compared to State-of-the-Art R410A Unit. Natural Working Fluids 2004 - 6th Gustav Lorentzen Conference . International Institute of Refrigeration; Glasgow. 2004-08-29 - 2004-09-01.
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Academic lectureNekså, Petter (SINTEF); Hoggen, Rune Lillethun; Aflekt, Kåre (NTNU); Jakobsen, Arne (SINTEF); Skaugen, Geir (SINTEF). (2004) Fan-less Heat Exchanger Concept for CO2 Heat Pump Systems. Natural Working Fluids 2004 - 6th Gustav Lorentzen Conference . International Institute of Refrigeration - IIR; Glasgow. 2004-08-29 - 2004-09-01.
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Academic lectureRekstad, Håvard; Nekså, Petter; Pisano, Giacomo; Bredesen, Arne Mathias. (2004) Measurement on a Two-Stage CO2-Compresor. Natural Working Fluids 2004 - 6th Gustav Lorentzen Conference . International Institute of Refrigeration - IIR; Glasogow. 2004-08-29 - 2004-09-01.
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Academic lectureTøndell, Espen; Bredesen, Arne Mathias; Pettersen, Jostein; Nekså, Petter. (2004) Test Facility and Concept for CO2 Expander. Natural Working Fluids 2004 - 6th Gustav Lorentzen Conference . International Institute of Refrigeration - IIR; Glasgow. 2004-08-29 - 2004-09-01.
2003
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Academic lectureNekså, Petter; Pettersen, Johan; Skaugen, Geir. (2003) CO2 refrigeration, air conditioning and heat pump technology. X Technologica Innovations in Refrigeration adn Air Conditioning, Milan, June 27-28 2003 . [Mangler data]; Milano. 2003-06-28.
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Academic lectureNekså, Petter; Pettersen, Jostein; Bredesen, Arne Mathias. (2003) Development of CO2 Refrigeration, Air Conditioning and Heat Pump Technology in Europe. International Conference on Fluid and Thermal Energy Conversion 2003 . [Mangler data]; Bali, Indonesia. 2004-12-12.
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Academic lecturePettersen, Jostein; Nekså, Petter. (2003) Consequences of the newest improvements in R-744 systems. Automotive alternate refrigerant symposium . [Mangler data]; Phoneix, AX, USA. 2003-07-17.
2002
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Academic lectureAarlien, Rune; Nekså, Petter; Pettersen, Jostein. (2002) CO2 as working fluid in heat pumping equipment. IEA Heat Pump Conference (7 : 2002 : Beijing) . [Mangler data]; Beijing. 2002-05-22.
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Academic lectureSkaugen, Geir; Nekså, Petter; Pettersen, Jostein. (2002) Simulation of trans-critical vapour compression systems. IIR Gustav Lorentzen Conference on Natural Working Fluids (5 : 2002 : Guangzhou, China) . [Mangler data]; Guangzhou, China. 2002-09-20.
2000
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Academic lectureAarlien, R.; Pettersen, Jostein; Bredesen, Arne Mathias; Nekså, P.; Adriansyah, Willy. (2000) Use of Carbon Dioxide as Working Fluid - Current Status and Potentials. International Conference on Fluid and Thermal Energy Conversion 2000 (FTEC 2000) . [Mangler data]; Bandung, Indonesia, July 2-6, 2000.
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Academic lectureNekså, P.; Dorin, F.; Rekstad, Håvard; Bredesen, Arne Mathias. (2000) Development of Two-stage Semi-Hermetic CO2-Compressors". The 4th IIR Gustav Lorentzen Conference on Natural Working Fluids . [Mangler data]; Purdue, West Lafyette, USA, July 25-28 2000.
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Academic lectureStrømmen, Ingvald; Bredesen, Arne Mathias; Eikevik, Trygve Magne; Nekså, Petter; Pettersen, Jostein; Aarlien, Rune. (2000) Varmepumpesystemer for et nytt århundre. Svenska kyltekniska föreningen och kylentreprenörernas förenings årsmøte. . [Mangler data]; Halmstad, Sverige, 12. mai 2000.
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Academic lectureZakeri, Reza G.; Nekså, Petter; Rekstad, Håvard; Lang-Ree, Kristian; Olsen, Torbjørn. (2000) Results and experiences with the first commercial pilot plant CO2 heat pump water heater. The 4th IIR Gustav Lorentzen Conference on Natural Working Fluids . [Mangler data]; Purdue, West Lafayette, USA, July 25-28, 2000.
1999
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Academic lectureMunkejord, S.T.; Mæhlum, H.S.; Nekså, Petter; Pettersen, Jostein. (1999) Micro Technology in Heat Pumping Systems. 29th International Congress of Refrigeration, IIR/IIF . [Mangler data]; Sydney, Australia, September 1999.
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Academic lectureNekså, Petter; Dorin, Filippo; Rekstad, Håvard; Bredesen, Arne Mathias; Serbisse, Ahmed. (1999) Development of semi-hermetic CO2-compressors. 20th International Congress of Refrigeration, IIR/IIF . [Mangler data]; Sydney, Australia, September 1999.
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Academic lectureNekså, Petter; Rekstad, Håvard; Zakeri, G.R.; Schiefloe, P.A.; Svensson, M.Chr.. (1999) Heat pump water heaters with CO%c as working fluid. 6th International Energy Agency Heat Pump Conference 1999 "Heat pumps - a benefit for the environment" . [Mangler data]; Berlin, Tyskland, May 31 - June 2, 1999.
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Academic lectureNekså, Petter; Rekstad, Håvard; Zakeri, G.Reza; Schiefloe, Per Arne; Svensson, Morten Chr.. (1999) Commercial heat pumps for water heating and heat recovery. CO%c Technology in Refrigeration, Heat Pump and Air Conditioning Systems. CO%c Technology in Refrigeration, Heat pump, and Air Condition Systems . [Mangler data]; Mainz, Tyskland, 18th March, 1999.
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Academic lectureStrømmen, Ingvald; Bredesen, Arne Mathias; Eikevik, Trygve Magne; Nekså, Petter; Aarlien, Rune. (1999) Heat pumping systems for the next century. 20th International Congress of Refrigeration, IIR/IIF . [Mangler data]; Sydney, Australia, September 1999.
1997
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Academic lectureBredesen, Arne Mathias; Aflekt, Kåre; Pettersen, Jostein; Hafner, Armin; Nekså, Petter; Skaugen, Geir. (1997) Studies on CO2 heat exchangers and heat transfer. IEA/IIR Workshop on CO2 Technology in Refrigeration, Air Condit ioning and Heat... . [Mangler data]; Trondheim.
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Academic lectureBredesen, Arne Mathias; Hafner, Armin; Pettersen, Jostein; Nekså, Petter; Aflekt, Kåre. (1997) Heat transfer and pressure drop for in-tube evaporation of CO%c. Heat transfer issues in natural refrigerants . [Mangler data]; University of Maryland, Washington, 6.-7. November 1997.
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Academic lectureNekså, Petter; Rekstad, Håvard; Fagerli, Bjørn E.. (1997) Norske løsninger med CO%c - praktiske resultater : CO%c-varmepumpe for tappevannsberedning. 15. Nordiske kjølemøte, 8. Nordiske varmepumpedager . [Mangler data]; Reykjavik (1997-06-19/22).
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Academic lecturePettersen, Jostein; Aarlien, Rune; Nekså, Petter; Skaugen, Geir; Aflekt, Kåre (NTNU). (1997) A comparative evaluation of CO2 and HCFC-22 residential air-conditioning systems in a Japanese climate. 15. nordiske kölemödet, 8. nordiske varmepumpedagene . KTI; Reykjavik. 1997-06-18 - 1997-06-21.
1996
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Academic lectureAarlien, Rune; Pettersen, Jostein; Skaugen, Geir; Nekså, Petter. (1996) Residential air conditioning with CO2 - Perliminary results. Applications for natural reprigerants . IIR/IIF; Aarhus. 1996-09-03 - 1996-09-06.
1995
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Academic lecturePettersen, Jostein; Nekså, Petter; Nesje, Odd M.; Schiefloe, Per Arne; Rekstad, Inge Håvard. (1995) Recent advances in CO2 refrigeration. 19th International Congress of Refrigeration . [Mangler data]; [Mangler data].
1994
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Academic lectureNekså, Petter. (1994) Trans-critical vapour compression heat pumps. New Applications of Natural Working Fluids in Refrigeration and Air Conditioning . [Mangler data]; [Mangler data].