Randi Kalskin Ramstad
Publications
2025
-
Kvalsvik, Karoline Husevåg;
Ramstad, Randi Kalskin;
Holmberg, Henrik;
Kocbach, Jan Martin.
(2025)
Measurements and simulations of high temperature borehole thermal energy storage in Drammen, Norway - evaluation of thermal losses and thermal barrier.
Geothermics
Academic article
2023
-
Kvalsvik, Karoline Husevåg;
Holmberg, Henrik;
Ramstad, Randi Kalskin;
Midttømme, Kirsti.
(2023)
Inclusion of advection in fractures in the line source equation for analysis of thermal response tests.
Geothermics
Academic article
2022
-
Ramstad, Randi Kalskin;
Justo Alonso, Maria;
Acuna, José;
Andersson, Olof;
Stokuca, Milan;
Håkansson, Niklas.
(2022)
The borehole thermal energy storage at Emmaboda, Sweden: First distributed temperature measurements.
Science and Technology for the Built Environment
Academic article
-
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Frengstad, Bjørn S..
(2022)
Optimizing submersible pump regulation of a clogging prone groundwater heat pump system in Melhus, Norway.
Science and Technology for the Built Environment
Academic article
-
Stenvik, Lars Aaberg;
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Frengstad, Bjørn.
(2022)
Hydrochemical and biotic control on iron incrustations in groundwater heat pump systems: Case study from a saline, anoxic aquifer in Melhus, Norway.
Geothermics
Academic article
-
Kvalsvik, Karoline;
Ramstad, Randi Kalskin;
Holmberg, Henrik;
Midttømme, Kirsti.
(2022)
Quantification of time-varying groundwater flow in boreholes in fractured crystalline rock using long-term distributed temperature sensing.
Norwegian Journal of Geology
Academic article
-
Stenvik, Lars Aaberg;
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Frengstad, Bjørn S..
(2022)
How to avoid gas clogging in groundwater heat pump systems: a case study from the Lena terrasse system in Melhus, Norway.
Bulletin of Engineering Geology and the Environment
Academic article
2021
-
Gjengedal, Sondre;
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Ulfsnes, Jan Ivar;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2021)
Online remote-controlled and cost-effective fouling and clogging surveillance of a groundwater heat pump system.
Bulletin of Engineering Geology and the Environment
Academic article
2020
-
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Kristensen, Lene.
(2020)
Test of Differential Monitoring of Stability (DMS) borehole temperature data to map groundwater flow in the unstable rock mass at Åknes, Norway.
Academic chapter/article/Conference paper
-
Gjengedal, Sondre;
Brøtan, Vegard;
Buset, Ole Tore;
Larsen, Erik;
Åsebø Berg, Olav;
Torsæter, Ole.
(2020)
Fluid flow through 3D-printed particle beds: a new technique for understanding, validating, and improving predictability of permeability from empirical equations.
Transport in Porous Media
Academic article
-
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2020)
Fouling and clogging surveillance in open loop GSHP systems: A systematic procedure for fouling and clogging detection in the whole groundwater circuit.
Bulletin of Engineering Geology and the Environment
Academic article
2019
-
Gjengedal, Sondre;
Stenvik, Lars Aaberg;
Storli, Pål-Tore Selbo;
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2019)
Design of Groundwater Heat Pump Systems.
Principles, Tools, and Strategies for Controlling Gas
and Precipitation Problems.
Energies
Academic article
-
Alonso, Maria Justo;
Line, Tor;
Næss, Erling;
Ramstad, Randi Kalskin;
Breuhaus, Peter Helmut Herbert;
Midttømme, Kirsti.
(2019)
Lessons learned after one-year of use of a highly efficient
neighbourhood in Norway.
IOP Conference Series: Materials Science and Engineering
Academic article
2018
-
Bargel, Terje Harald;
Ramstad, Randi Kalskin;
Brattli, Bjørge;
Opsal, Øystein Lid.
(2018)
Geological parameters and shear strength of dry tills from the southern half of Norway in relation to bedrock geology.
NTNU
Doctoral dissertation
-
Hellestveit, Martina Seyoum;
Ramstad, Randi Kalskin;
Gjengedal, Sondre.
(2018)
3D-modellering av grunnvannstrømning og varmetransport i akviferen i Melhus sentrum - En kvartær- og hydrogeologisk tolkning, med vurdering av uttakskapasitet.
NTNU
Masters thesis
-
Solberg, Runa Aronsen;
Ramstad, Randi Kalskin;
Torsæter, Ole.
(2018)
Modification of Existing Permeameters to Estimate Hydraulic Conductivity of Groundwater in Unconsolidated Sand in the Laboratory.
NTNU
Masters thesis
-
Bjugstad, Hanne;
Ramstad, Randi Kalskin.
(2018)
Billig, miljøvennlig oppvarming.
Website (informational material)
-
Velstad, Viveke;
Ramstad, Randi Kalskin;
Bruland, Oddbjørn.
(2018)
Evaluering av ENKIs muligheter innen
skredvarsling.
NTNU
Masters thesis
-
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Kristensen, Lene.
(2018)
Bruk av temperaturmålinger til kartlegging av grunnvannsstrømning - Test og metodeutvikling med data fra Åknes.
NTNU
Masters thesis
-
Lende, Ingvild Bjelland;
Ramstad, Randi Kalskin;
Konieczny, Roger M.
(2018)
Utvikling av Fingeravtrykkmetoden med analysedata fra passive
prøvetakingsenheter - Bruk av kjemiske fingeravtrykk i kildesporing knyttet til miljøovervåkning av hydrokarboner
i vannforekomster.
NTNU
Masters thesis
-
Mevik, Amalie;
Ramstad, Randi Kalskin.
(2018)
Numerisk 3D-modellering av hydrogeologiske forhold på Slettemoen,Krødsherad kommune - Vurdering av beskyttelsessoner rundt produksjonsbrønner, bærekraftig
grunnvannsuttak og grunnvannsnivå under grustak .
NTNU
Masters thesis
-
Børsum, Henrikke Marie Hogseth;
Ramstad, Randi Kalskin.
(2018)
Vanninfiltrasjon i fjellbrønner i forbindelse med drivingen av Follobanetunnelen.
NTNU
Masters thesis
2017
-
Flugsrud, Inger Strøm;
Ramstad, Randi Kalskin;
Gjengedal, Sondre.
(2017)
Vann- og varmetransport i grunnvannsakviferen i Melhus sentrum - konseptuell vurdering.
NTNU
Masters thesis
-
Brøste, Heidi Marstein;
Ramstad, Randi Kalskin;
Gjengedal, Sondre;
Banks, David.
(2017)
Vannkvalitet knyttet til grunnvannsbaserte grunnvarmeanlegg i Melhus og Elverum.
NTNU
Masters thesis
-
Zhou, Hongyun;
Eikevik, Trygve Magne;
Ramstad, Randi Kalskin.
(2017)
Modelling of Ground Source Systems for Heat Pump Operations.
NTNU
Masters thesis
-
Anderssen, Anja Beate Skogheim;
Eikevik, Trygve Magne;
Ramstad, Randi Kalskin.
(2017)
Grunnvannsbaserte varmepumper Tilrettelegging for bruk av grunnvann til oppvarming og kjøling i Melhus sentrum - sentralisert løsning.
NTNU
Masters thesis
2016
-
Spitler, Jeffrey D;
Javed, Saqib;
Ramstad, Randi Kalskin.
(2016)
Natural convection in groundwater-filled boreholes used as ground heat exchangers.
Applied Energy
Academic article
-
Persson, Tomas;
Stavset, Ole;
Ramstad, Randi Kalskin;
Alonso, Maria Justo.
(2016)
Software for modelling and simulation of
ground source heating and cooling systems.
SINTEF Energi. Rapport (TR A7570)
Report
-
Sandbakken, Marit Eline;
Ramstad, Randi Kalskin;
Brattli, Bjørge.
(2016)
3-dimensjonal visualisering av grunnvannsmagasinet i Elverum sentrum - Hydrogeologisk og kvartærgeologisk forståelse.
NTNU
Masters thesis
-
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav.
(2016)
ORMEL-prosjektet.
VVS aktuelt
Article in business/trade/industry journal
-
Stradiotto, Gian Maria;
Eikevik, Trygve Magne;
Ramstad, Randi Kalskin;
Stoppato, Anna.
(2016)
Ground Source Heat Pump in District Heating and Cooling System in Elverum.
NTNU
Masters thesis
-
Ganerød, Guri Venvik;
Ramstad, Randi Kalskin.
(2016)
Grunnvann som energikilde har ingen CO2-utslipp, likevel er det lite brukt i Norge.
Teknisk Ukeblad
Article in business/trade/industry journal
-
Ramstad, Randi Kalskin;
Brattli, Bjørge;
Haugen, Thomas.
(2016)
Estimering og sammenligning av hydraulisk ledningsevne ved hjelp av kornfordelingsanalyser, permeametertester og feltmåling.
NTNU
Masters thesis
2015
-
Førde, Marit Johanne;
Ramstad, Randi Kalskin;
Brattli, Bjørge.
(2015)
Numerisk 3D-modellering av kvartærgeologi og hydrogeologi i Melhus sentrum - En vurdering av uttakskapasitet, optimal utnyttelse og forvaltning til energiformål.
NTNU
Masters thesis
-
Ramstad, Randi Kalskin;
Riise, Mari Helen;
Brattli, Bjørge.
(2015)
Praktisk guide for grunnvarmeanlegg basert på oppumpet grunnvann - Hydrogeologiske forundersøkelser, etablering, drift og oppfølging med utgangspunkt i erfaringer fra etablerte anlegg i Melhus sentrum.
NTNU
Masters thesis
2014
-
Ramstad, Randi Kalskin;
Midttømme, Kirsti;
Liebel, Heiko Tobias;
Frengstad, Bjørn S;
Willemoes-Wissing, Bjørn.
(2014)
Thermal conductivity map of the Oslo region based on thermal diffusivity measurements of rock core samples.
Bulletin of Engineering Geology and the Environment
Academic article
2012
-
Liebel, Heiko Tobias;
Stølen, Marie Sigmundsdatter;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2012)
Insights into the reliability of different thermal conductivity measurement techniques: a thermo-geological study in Mære (Norway).
Bulletin of Engineering Geology and the Environment
Academic article
-
Liebel, Heiko Tobias;
Huber, Kilian;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2012)
Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow.
Bulletin of Engineering Geology and the Environment
Academic article
2011
-
Liebel, Heiko Tobias;
Huber, Kilian;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2011)
Temperature footprint of a thermal response test can help to reveal thermogeological information.
Bulletin. Norges geologiske undersøkelse (NGU-Bulletin)
Academic article
2010
-
Liebel, Heiko;
Huber, K.;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2010)
Rock core samples cannot replace thermal response tests : a statistical comparison based on thermal conductivity data from the Oslo Region (Norway).
Tapir Akademisk Forlag
Academic chapter/article/Conference paper
2009
-
Liebel, Heiko;
Brattli, Bjørge;
Huber, Kilian;
Frengstad, Bjørn;
Ramstad, Randi Kalskin.
(2009)
Thermogeology in the Oslo region and Kristiansand - Results from thermal response tests (TRT) with and without artificially induced groundwater flow.
Norges geologiske undersøkelse (NGU)
Report
2008
-
Liebel, Heiko;
Frengstad, Bjørn;
Ramstad, Randi;
Brattli, Bj�rge.
(2008)
Low enthalpy geothermal energy in fractured rock aquifers.
33rd International Geological Congress, Abstracts
Abstract
2006
-
Ramstad, Randi;
Hilmo, Bernt O.;
Brattli, Bjørge.
(2006)
In-situ rock stress and construction of groundwater-based ground source energy plant.
Taylor & Francis
Academic chapter/article/Conference paper
2005
-
Ramstad, Randi Kalskin.
(2005)
Vann i berg – til nytte og besvær: grunnvann i berg som ressurs for menneskers velferd og som årsak til problemer i undergrunnsanlegg. .
NTNU, Institutt for geologi og bergteknikk
Report
2004
-
Ramstad, Randi Kalskin.
(2004)
Ground source energy in crystalline bedrock - increased energy extraction by using hydraulic fracturing in boreholes. .
Doktoravhandlinger ved NTNU (2004:161)
Doctoral dissertation
Journal publications
-
Kvalsvik, Karoline Husevåg;
Ramstad, Randi Kalskin;
Holmberg, Henrik;
Kocbach, Jan Martin.
(2025)
Measurements and simulations of high temperature borehole thermal energy storage in Drammen, Norway - evaluation of thermal losses and thermal barrier.
Geothermics
Academic article
-
Kvalsvik, Karoline Husevåg;
Holmberg, Henrik;
Ramstad, Randi Kalskin;
Midttømme, Kirsti.
(2023)
Inclusion of advection in fractures in the line source equation for analysis of thermal response tests.
Geothermics
Academic article
-
Ramstad, Randi Kalskin;
Justo Alonso, Maria;
Acuna, José;
Andersson, Olof;
Stokuca, Milan;
Håkansson, Niklas.
(2022)
The borehole thermal energy storage at Emmaboda, Sweden: First distributed temperature measurements.
Science and Technology for the Built Environment
Academic article
-
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Frengstad, Bjørn S..
(2022)
Optimizing submersible pump regulation of a clogging prone groundwater heat pump system in Melhus, Norway.
Science and Technology for the Built Environment
Academic article
-
Stenvik, Lars Aaberg;
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Frengstad, Bjørn.
(2022)
Hydrochemical and biotic control on iron incrustations in groundwater heat pump systems: Case study from a saline, anoxic aquifer in Melhus, Norway.
Geothermics
Academic article
-
Kvalsvik, Karoline;
Ramstad, Randi Kalskin;
Holmberg, Henrik;
Midttømme, Kirsti.
(2022)
Quantification of time-varying groundwater flow in boreholes in fractured crystalline rock using long-term distributed temperature sensing.
Norwegian Journal of Geology
Academic article
-
Stenvik, Lars Aaberg;
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Frengstad, Bjørn S..
(2022)
How to avoid gas clogging in groundwater heat pump systems: a case study from the Lena terrasse system in Melhus, Norway.
Bulletin of Engineering Geology and the Environment
Academic article
-
Gjengedal, Sondre;
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Ulfsnes, Jan Ivar;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2021)
Online remote-controlled and cost-effective fouling and clogging surveillance of a groundwater heat pump system.
Bulletin of Engineering Geology and the Environment
Academic article
-
Gjengedal, Sondre;
Brøtan, Vegard;
Buset, Ole Tore;
Larsen, Erik;
Åsebø Berg, Olav;
Torsæter, Ole.
(2020)
Fluid flow through 3D-printed particle beds: a new technique for understanding, validating, and improving predictability of permeability from empirical equations.
Transport in Porous Media
Academic article
-
Gjengedal, Sondre;
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2020)
Fouling and clogging surveillance in open loop GSHP systems: A systematic procedure for fouling and clogging detection in the whole groundwater circuit.
Bulletin of Engineering Geology and the Environment
Academic article
-
Gjengedal, Sondre;
Stenvik, Lars Aaberg;
Storli, Pål-Tore Selbo;
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav;
Frengstad, Bjørn S..
(2019)
Design of Groundwater Heat Pump Systems.
Principles, Tools, and Strategies for Controlling Gas
and Precipitation Problems.
Energies
Academic article
-
Alonso, Maria Justo;
Line, Tor;
Næss, Erling;
Ramstad, Randi Kalskin;
Breuhaus, Peter Helmut Herbert;
Midttømme, Kirsti.
(2019)
Lessons learned after one-year of use of a highly efficient
neighbourhood in Norway.
IOP Conference Series: Materials Science and Engineering
Academic article
-
Spitler, Jeffrey D;
Javed, Saqib;
Ramstad, Randi Kalskin.
(2016)
Natural convection in groundwater-filled boreholes used as ground heat exchangers.
Applied Energy
Academic article
-
Ramstad, Randi Kalskin;
Hilmo, Bernt Olav.
(2016)
ORMEL-prosjektet.
VVS aktuelt
Article in business/trade/industry journal
-
Ganerød, Guri Venvik;
Ramstad, Randi Kalskin.
(2016)
Grunnvann som energikilde har ingen CO2-utslipp, likevel er det lite brukt i Norge.
Teknisk Ukeblad
Article in business/trade/industry journal
-
Ramstad, Randi Kalskin;
Midttømme, Kirsti;
Liebel, Heiko Tobias;
Frengstad, Bjørn S;
Willemoes-Wissing, Bjørn.
(2014)
Thermal conductivity map of the Oslo region based on thermal diffusivity measurements of rock core samples.
Bulletin of Engineering Geology and the Environment
Academic article
-
Liebel, Heiko Tobias;
Stølen, Marie Sigmundsdatter;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2012)
Insights into the reliability of different thermal conductivity measurement techniques: a thermo-geological study in Mære (Norway).
Bulletin of Engineering Geology and the Environment
Academic article
-
Liebel, Heiko Tobias;
Huber, Kilian;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2012)
Thermal response testing of a fractured hard rock aquifer with and without induced groundwater flow.
Bulletin of Engineering Geology and the Environment
Academic article
-
Liebel, Heiko Tobias;
Huber, Kilian;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2011)
Temperature footprint of a thermal response test can help to reveal thermogeological information.
Bulletin. Norges geologiske undersøkelse (NGU-Bulletin)
Academic article
-
Liebel, Heiko;
Frengstad, Bjørn;
Ramstad, Randi;
Brattli, Bj�rge.
(2008)
Low enthalpy geothermal energy in fractured rock aquifers.
33rd International Geological Congress, Abstracts
Abstract
Part of book/report
-
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Kristensen, Lene.
(2020)
Test of Differential Monitoring of Stability (DMS) borehole temperature data to map groundwater flow in the unstable rock mass at Åknes, Norway.
Academic chapter/article/Conference paper
-
Liebel, Heiko;
Huber, K.;
Frengstad, Bjørn Syvert;
Ramstad, Randi kalskin;
Brattli, Bjørge.
(2010)
Rock core samples cannot replace thermal response tests : a statistical comparison based on thermal conductivity data from the Oslo Region (Norway).
Tapir Akademisk Forlag
Academic chapter/article/Conference paper
-
Ramstad, Randi;
Hilmo, Bernt O.;
Brattli, Bjørge.
(2006)
In-situ rock stress and construction of groundwater-based ground source energy plant.
Taylor & Francis
Academic chapter/article/Conference paper
Report
-
Bargel, Terje Harald;
Ramstad, Randi Kalskin;
Brattli, Bjørge;
Opsal, Øystein Lid.
(2018)
Geological parameters and shear strength of dry tills from the southern half of Norway in relation to bedrock geology.
NTNU
Doctoral dissertation
-
Hellestveit, Martina Seyoum;
Ramstad, Randi Kalskin;
Gjengedal, Sondre.
(2018)
3D-modellering av grunnvannstrømning og varmetransport i akviferen i Melhus sentrum - En kvartær- og hydrogeologisk tolkning, med vurdering av uttakskapasitet.
NTNU
Masters thesis
-
Solberg, Runa Aronsen;
Ramstad, Randi Kalskin;
Torsæter, Ole.
(2018)
Modification of Existing Permeameters to Estimate Hydraulic Conductivity of Groundwater in Unconsolidated Sand in the Laboratory.
NTNU
Masters thesis
-
Velstad, Viveke;
Ramstad, Randi Kalskin;
Bruland, Oddbjørn.
(2018)
Evaluering av ENKIs muligheter innen
skredvarsling.
NTNU
Masters thesis
-
Stenvik, Lars Aaberg;
Ramstad, Randi Kalskin;
Kristensen, Lene.
(2018)
Bruk av temperaturmålinger til kartlegging av grunnvannsstrømning - Test og metodeutvikling med data fra Åknes.
NTNU
Masters thesis
-
Lende, Ingvild Bjelland;
Ramstad, Randi Kalskin;
Konieczny, Roger M.
(2018)
Utvikling av Fingeravtrykkmetoden med analysedata fra passive
prøvetakingsenheter - Bruk av kjemiske fingeravtrykk i kildesporing knyttet til miljøovervåkning av hydrokarboner
i vannforekomster.
NTNU
Masters thesis
-
Mevik, Amalie;
Ramstad, Randi Kalskin.
(2018)
Numerisk 3D-modellering av hydrogeologiske forhold på Slettemoen,Krødsherad kommune - Vurdering av beskyttelsessoner rundt produksjonsbrønner, bærekraftig
grunnvannsuttak og grunnvannsnivå under grustak .
NTNU
Masters thesis
-
Børsum, Henrikke Marie Hogseth;
Ramstad, Randi Kalskin.
(2018)
Vanninfiltrasjon i fjellbrønner i forbindelse med drivingen av Follobanetunnelen.
NTNU
Masters thesis
-
Flugsrud, Inger Strøm;
Ramstad, Randi Kalskin;
Gjengedal, Sondre.
(2017)
Vann- og varmetransport i grunnvannsakviferen i Melhus sentrum - konseptuell vurdering.
NTNU
Masters thesis
-
Brøste, Heidi Marstein;
Ramstad, Randi Kalskin;
Gjengedal, Sondre;
Banks, David.
(2017)
Vannkvalitet knyttet til grunnvannsbaserte grunnvarmeanlegg i Melhus og Elverum.
NTNU
Masters thesis
-
Zhou, Hongyun;
Eikevik, Trygve Magne;
Ramstad, Randi Kalskin.
(2017)
Modelling of Ground Source Systems for Heat Pump Operations.
NTNU
Masters thesis
-
Anderssen, Anja Beate Skogheim;
Eikevik, Trygve Magne;
Ramstad, Randi Kalskin.
(2017)
Grunnvannsbaserte varmepumper Tilrettelegging for bruk av grunnvann til oppvarming og kjøling i Melhus sentrum - sentralisert løsning.
NTNU
Masters thesis
-
Persson, Tomas;
Stavset, Ole;
Ramstad, Randi Kalskin;
Alonso, Maria Justo.
(2016)
Software for modelling and simulation of
ground source heating and cooling systems.
SINTEF Energi. Rapport (TR A7570)
Report
-
Sandbakken, Marit Eline;
Ramstad, Randi Kalskin;
Brattli, Bjørge.
(2016)
3-dimensjonal visualisering av grunnvannsmagasinet i Elverum sentrum - Hydrogeologisk og kvartærgeologisk forståelse.
NTNU
Masters thesis
-
Stradiotto, Gian Maria;
Eikevik, Trygve Magne;
Ramstad, Randi Kalskin;
Stoppato, Anna.
(2016)
Ground Source Heat Pump in District Heating and Cooling System in Elverum.
NTNU
Masters thesis
-
Ramstad, Randi Kalskin;
Brattli, Bjørge;
Haugen, Thomas.
(2016)
Estimering og sammenligning av hydraulisk ledningsevne ved hjelp av kornfordelingsanalyser, permeametertester og feltmåling.
NTNU
Masters thesis
-
Førde, Marit Johanne;
Ramstad, Randi Kalskin;
Brattli, Bjørge.
(2015)
Numerisk 3D-modellering av kvartærgeologi og hydrogeologi i Melhus sentrum - En vurdering av uttakskapasitet, optimal utnyttelse og forvaltning til energiformål.
NTNU
Masters thesis
-
Ramstad, Randi Kalskin;
Riise, Mari Helen;
Brattli, Bjørge.
(2015)
Praktisk guide for grunnvarmeanlegg basert på oppumpet grunnvann - Hydrogeologiske forundersøkelser, etablering, drift og oppfølging med utgangspunkt i erfaringer fra etablerte anlegg i Melhus sentrum.
NTNU
Masters thesis
-
Liebel, Heiko;
Brattli, Bjørge;
Huber, Kilian;
Frengstad, Bjørn;
Ramstad, Randi Kalskin.
(2009)
Thermogeology in the Oslo region and Kristiansand - Results from thermal response tests (TRT) with and without artificially induced groundwater flow.
Norges geologiske undersøkelse (NGU)
Report
-
Ramstad, Randi Kalskin.
(2005)
Vann i berg – til nytte og besvær: grunnvann i berg som ressurs for menneskers velferd og som årsak til problemer i undergrunnsanlegg. .
NTNU, Institutt for geologi og bergteknikk
Report
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Ramstad, Randi Kalskin.
(2004)
Ground source energy in crystalline bedrock - increased energy extraction by using hydraulic fracturing in boreholes. .
Doktoravhandlinger ved NTNU (2004:161)
Doctoral dissertation
INFORMASJONSMATR
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Bjugstad, Hanne;
Ramstad, Randi Kalskin.
(2018)
Billig, miljøvennlig oppvarming.
Website (informational material)
Teaching
Courses
- TGB4200 - Engineering Geology of Soils, Advanced Course
- TGB4570 - Engineering Geology, Specialization Project
- TGB4945 - Engineering Geology, Master's Thesis
- TGB4855 - Experts in Teamwork - Energy storage in the ground - an important contribution to the green transition
- TEP4260 - Heat Pumps for Heating and Cooling of Buildings
- TGB4205 - Hydrogeology
Outreach
2025
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Academic lectureMidttømme, Kirsti; Beer, Johannes de; Ramstad, Randi Kalskin. (2025) Geoenergi og setninger . Norges Geologiske Forening Vinterkonferansen 2025 , Bergen 2025-01-06 - 2025-01-08
2024
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Academic lectureKvalsvik, Karoline Husevåg; Ramstad, Randi Kalskin; Holmberg, Henrik; Kocbach, Jan Martin. (2024) Quantification of losses from borehole thermal energy storage through distributed temperature sensing and numerical modelling. International Ground Source Heat Pump Association IGSHPA 2024 , Montréal, Canada 2024-05-28 - 2024-05-30
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LectureRamstad, Randi Kalskin. (2024) Integrated mapping of energy requirements and geologic knowledge into optimal tailored system design in Norway. OptiSGE project Optimization of Shallow Geothermal Energy Resources for Green Transition OptiSGE Hybrid workshop , Bergen 2024-06-06 - 2024-06-06
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Academic lectureMidttømme, Kirsti; de Beer, Hans; Ramstad, Randi Kalskin. (2024) Monitoring Geoenergy-Related Subsidence and Ground Movements Using InSAR Technology. University of Stavanger and EERA JP Geothermal Energy European Geothermal Workshop 2024 , Stavanger, Norway 2024-11-13 - 2024-11-14
2023
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LectureKvalsvik, Karoline Husevåg; Ramstad, Randi Kalskin; Midttømme, Kirsti; Holmberg, Henrik. (2023) Distributed Temperature Sensing measurements for exploring Borehole Thermal Energy Storages in Scandinavia . members of the EERA Joint Program of Geothermal Energy (Geothermal – Home (eera-geothermal.eu)) European Geothermal Workshop , Utrecht, Netherlands 2023-11-08 - 2023-11-09
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LectureRamstad, Randi Kalskin; Midttømme, Kirsti. (2023) Muligheter innenfor de nye nasjonale virkemidlene for ENØK. GCE NODE, NTVA, GEAN Bergvarme: Veien til energioptimalisering i Norge? , Digitalt 2023-10-19 - 2023-10-19
2022
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PosterBryn, Christian Rekve; Soldal, Oddmund; Frengstad, Bjørn S.; Ramstad, Randi Kalskin; Dagestad, Atle. (2022) BØMOEN PLUS VILLAGE - A sustainable utilization of a groundwater resource for drinking water, energy extraction and storage. NGWM 35th Nordic Geological Winter meeting, 2022 , Reykjavik 2022-05-11 - 2022-05-13
2021
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Academic lectureMidttømme, Kirsti; Ramstad, Randi Kalskin; Kvalsvik, Karoline; Justo Alonso, Maria. (2021) Geothermal Energy Use in Norway. Country Update for 2015-2019. International Geothermal Association World Geothermal Congress 2020 , Digital /Rwykjavik 2021-03-30 - 2021-10-27
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Academic lectureStenvik, Lars Aaberg; Frengstad, Bjørn S.; Gjengedal, Sondre; Ramstad, Randi Kalskin. (2021) Diagnosing Encrustation Problems in Open-loop Groundwater Heat Pump Systems in Melhus, Norway. International Geothermal Association World Geothermal Congress 2020+1 Reykjavik , Reykjavik 2021-03-01 - 2021-10-27
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Academic lectureJusto Alonso, Maria; Ramstad, Randi Kalskin; Holmberg, Henrik; Walnum, Harald Taxt; Midttømme, Kirsti; Andersen, Geir. (2021) Fjell 2020 High Temperature Borehole Energy Storage - System Control for Various Operation Modes . World Geothermal Congress 2020 , Digital /Reykjavik 2021-03-30 - 2021-10-27
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LectureRamstad, Randi Kalskin. (2021) HT-BTES GeoTermos, Norway . Svenskt Geoenergicentrum Geoenergidagen 2021 , Digital konferanse, Sverige 2021-10-06 - 2021-10-07
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PosterKvalsvik, Karoline; Ramstad, Randi Kalskin; Holmberg, Henrik; Midttømme, Kirsti. (2021) EFFECTIVE THERMAL CONDUCTIVITY FROM THERMAL RESPONSE TESTS INCREASES WITH TIME WHEN SUFFICIENT GROUNDWATER FLOW IS PRESENT. University of Ljubljana, Faculty of Mechanical Engineering, Slovenia & National Institute of Chemistry, Department of Inorganic Chemistry and Technology, Slovenia Enerstock , Online/Ljubljana, Slovenia 2021-06-09 - 2021-06-11
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Academic lectureKvalsvik, Karoline; Ramstad, Randi Kalskin; Midttømme, Kirsti; Holmberg, Henrik. (2021) Quantification of grondwater flow using DTS for better BTES design. Norsk Geologisk Forening Vinterkonferansen 2021 , Webinar 2021-01-06 - 2021-01-08
2020
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Academic lectureMidttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Krafft, Charlotte Gannefors. (2020) Geothermal energy systems – understanding the heat exchange by distributed temperature sensing (DTS). Geological Society of Norway 34th Nordic Geological Winter Meeting , Oslo 2020-01-08 - 2020-01-10
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Academic lectureMidttømme, Kirsti; Alonso, Maria Justo; Krafft, Charlotte Gannefors; Kvalsvik, Karoline; Ramstad, Randi Kalskin; Stene, Jørn. (2020) Geothermal Energy Use in Norway, Country Update for 2015-2019. . International Geothermal Association World Geothermal Congress 2020 , Reykjavik 2020-04-27 - 2020-05-01
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LectureRamstad, Randi Kalskin; Stenvik, Lars Aaberg. (2020) Lena terrasse, Melhus: Long-term performance of GSHP systems for commercial, institutional and multi-family buildings . Internation Energy Agency - Heat Pumping Technologies IEA HPT Annex 52 , (Online) 2020-11-20 - 2020-11-20
2019
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LectureMidttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Kvalsvik, Karoline; Stene, Jørn. (2019) Country News - Norway . IEA Heat Pump Technology IEA HPT Annex 52 3th Expert Meeting , Helsinki 2019-05-23 - 2019-05-24
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LectureMidttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Kvalsvik, Karoline; Stene, Jørn; Holmberg, Henrik. (2019) Norway - Annex 52 Monitoring Projects . IEA Heat Pump Technology IEA HPT Annex 52 3th Expert Meeting , Helsinki 2019-05-23 - 2019-05-24
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Academic lectureMidttømme, Kirsti; Skarphagen, Helge; Ramstad, Randi Kalskin; Bastesen, Eivind; Kvalsvik, Karoline. (2019) Developing Borehole Thermal Energy Storage (BTES) towards high temperature (HT) BTES. Geologisk Vintermøte, Bergen , Bergen 2019-01-09 - 2019-01-09
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Academic lectureStenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. (2019) Application of a flow-through cell to monitor groundwater source heat pump systems in Melhus, Norway. International Assocation of Hydrogeologists 46th IAH Congress: Groundwater management and governance – coping with water scarcity , Malaga 2019-09-22 - 2019-09-27
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Popular scientific lectureStenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. (2019) Groundwater source heat pumps systems: Principles and challenges. NTNU Young Researcher Clean Energy Forum Clean Energy Symposium , Trondheim 2019-02-08 - 2019-02-08
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Academic lectureStenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. (2019) ORMEL 2: Iron and manganese encrustations in open-loop ground source heat pump systems. Norsk Geologisk Forening Vinterkonferansen 2019 , Bergen 2019-01-07 - 2019-01-09
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LectureMidttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Stene, Jørn. (2019) Country News- Norway . IEA HPT IEA HPT Annex 52 4th Expert Meeting , London 2019-09-16 - 2019-09-17
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LectureMidttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Stene, Jørn. (2019) Norway- Annex 52 Monitoring Projects . IEA Heat Pump Technology IEA HPT 4th expert meeting , London 2019-09-16 - 2019-09-17
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Academic lectureKvalsvik, Karoline; Midttømme, Kirsti; Ramstad, Randi Kalskin. (2019) Geothermal Energy Use, Country Update for Norway. European Geothermal Energy Council (EGEC) European Geothermal Congress 2019 , Den Haag, 2019-06-11 - 2019-06-14
2018
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LectureRamstad, Randi Kalskin. (2018) Energibrønner som varmekilde for varmepumper. VVS foreningen/CGER VVS foreningen/CGER, Bergen 10 april 2018 , Bergen 2018-04-10 - 2018-04-10
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Academic lectureHolmberg, Henrik; Ramstad, Randi Kalskin; Riise, Mari Helen. (2018) Temperature profile measurements – easy, cheap and informative. IGSHPA IGSHPA Reasearch Conference 2018 , KTH Stockholm 2018-09-18 - 2018-09-18
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Academic lectureGjengedal, Sondre; Ramstad, Randi Kalskin; Hilmo, Bernt Olav; Frengstad, Bjørn S.. (2018) Video inspection of wells in open loop ground source heat pump systems in Norway. IGSHPA IGSHPA Reasearch Conference 2018 , KTH Stockholm 2018-09-18 - 2018-09-19
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InterviewRamstad, Randi Kalskin; Midttømme, Kirsti. (2018) Framtidens lager för värme och kyla. Energiforsk Energiforsk [Internet] 2018-09-24
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InterviewMidttømme, Kirsti; Ramstad, Randi Kalskin. (2018) Det grønne skiftet går under jorda. Anleggsmaskinen, nr 4 2018 Anleggsmaskinen, nr 4 2018 [Business/trade/industry journal] 2018-06-01
2017
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LectureRamstad, Randi Kalskin; Holmberg, Henrik; Mazotti, Willem. (2017) De viktigste resultatene fra Føyka-prosjektet så langt. Asker kommune Seminaret "Nye løsninger for geoenergi" , Asker 2017-03-24 - 2017-03-24
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LectureRamstad, Randi Kalskin. (2017) Aquifer Thermal Energy Storage (ATES) and direct use of groundwater for heating and cooling – Norwegian experiences. Christian Michelsen Research Seminar Poland, Iceland, EGEC, Norway Bergen , Bergen 2017-10-10 -
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Popular scientific lectureRamstad, Randi Kalskin. (2017) Energibrønner som varmekilde for varmepumper - Har kuldebransjen noe å lære her? . Norsk kjøleteknisk forening Kveldsmøte for Norsk kjøleteknisk forening i Oslo , Oslo 2017-10-26 -
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LectureRamstad, Randi Kalskin; Gjengedal, Sondre. (2017) Forskningsprosjektet ORMEL i Norge - grunnvann til varme og kjøling i Melhus og Elverum. Sveriges geologiske undersøkning Grundvattendagarna Uppsala , Uppsala 2017-11-07 - 2017-11-08
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LectureRamstad, Randi Kalskin. (2017) ORMEL - optimal Resource utilization of groundwater for heating and cooling in Melhus and Elverum. Norwegian Center for Geothermal Energy Research GeoEnergi 2017 Bergen , Bergen 2017-05-22 - 2017-05-23
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LectureRamstad, Randi Kalskin. (2017) Onshore geoenergy - Technologies and potential. NTNU IGP Workshop Statoil på NTNU IGP , Trondheim 2017-06-26 -
2016
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Academic lectureMidttømme, Kirsti; Henne, Ingvar; Kocbach, Jan; Ramstad, Randi Kalskin. (2016) Geothermal Energy Use, Country Update for Norway. European Geothermal Congress 2016 , Strasbourg, France, 19‐24 Sept 2016 2016-04-19 - 2016-04-24
2015
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Academic lectureMidttømme, Kirsti; Muller, Jiri; Ramstad, Randi Kalskin. (2015) Country Update for Norway. World Geothermal Congress 2015 , Melbourne 2015-04-19 - 2015-04-25
2011
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PosterLiebel, Heiko Tobias; Vistnes, Gunnar; Frengstad, Bjørn; Ramstad, Randi kalskin; Brattli, Bjørge. (2011) Thermal response test with and without artificial convection. 2nd European Geothermal PhD Day , Reykjavik 2011-03-02 - 2011-03-04
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Academic lectureLiebel, Heiko; Frengstad, Bjørn; Ramstad, Randi Kalskin; Brattli, Bjørge. (2011) Termisk responstesting kontra varmeledningsevne målt i lab. Norges geologiske undersøkelse "Det 20. nasjonale seminar om hydrogeologi og miljøgeologi, NGU. , Trondheim 2011-02-14 - 2011-02-15
2010
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PosterLiebel, Heiko Tobias; Frengstad, Bjørn; Ramstad, Randi kalskin; Brattli, Bjørge. (2010) Groundwater or rock type - what dominates the thermal conductivity in the ground?. Deutsches GeoForschungsZentrum (GFZ) First European Geothermal PhD Day (EGPD) 2010 , Potsdam 2010-02-12 - 2010-02-12
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Academic lectureLiebel, Heiko Tobias; Huber, Kilian; Ramstad, Randi kalskin; Brattli, Bjørge; Frengstad, Bjørn. (2010) Can rock core thermal conductivity data replace thermal response tests?. International Water Association (IWA) Water and Energy 2010 , Amsterdam 2010-11-10 - 2010-11-12
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PosterLiebel, Heiko; Kilian, Huber; Ramstad, Randi kalskin; Frengstad, Bjørn; Brattli, Bjørge. (2010) Rock core samples cannot replace thermal response tests – a statistical comparison based on thermal conductivity data from the Oslo region (Norway). Renewable Energy Conference 2010 2010-06-07 - 2010-06-08
2009
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PosterLiebel, Heiko; Frengstad, Bjørn; Ramstad, Randi; Brattli, Bjørge. (2009) Grunnvann eller berggrunn - hva dominerer varmeledningsevnen i grunnen?. Norges geologiske undersøkelse Det 18. nasjonale seminar om hydrogeologi og miljøgeokjemi , Trondheim 2009-02-03 - 2009-02-04
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PosterLiebel, Heiko; Ramstad, Randi Kalskin; Frengstad, Bjørn; Brattli, Bjørge. (2009) Groundwater or rock type - what dominates the thermal conductivity in the ground?. Effstock 2009 Thermal Energy Storage for Efficiency and Sustainability , Stockholm 2009-06-14 - 2009-06-17
2005
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Academic lectureRamstad, Randi; Hilmo, Bernt; Brattli, Bjørge. (2005) Grunnvarme fra fast fjell - god lønnsomhet ved bruk av grunnvann. Norges geologiske undersøkelse Det 14. seminar om hydrogeologi og miljøgeokjemi , Trondheim 2005-02-08 - 2005-02-09
2003
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Academic lectureRamstad, Randi Kalskin; Hilmo, Bernt Olav; Skarphagen, Helge; Hiorth, Espen; Brattli, Bjørge. (2003) Grunnvarme fra fast fjell - Noen resultater fra "Trykkeprosjektet". Det 12. seminar om hydrogeologi og miljøgeokjemi , NGU, Trondheim, Norge 2003-02-05 -
2002
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PosterRamstad, Randi Kalskin; Hilmo, Bernt Olav; Skarphagen, Helge; Hiort, Espen; Brattli, Bjørge. (2002) Tørre brønner - en saga blott?. Det 11. seminar om hydrogeologi og miljøgeologi, NGU , Trondheim, Norge 2002-08-02 -
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Academic lectureRamstad, Randi Kalskin; Hilmo, Bernt Olav; Brattli, Bjørge. (2002) Ground-source energy from crystalline bedrock - Improved yield and energy extraction by using hydraulic fracturing in wells. The 25th Nordic Geological Winter Meeting , Reykjavik, Iceland 2002-01-09 -
2001
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PosterRamstad, Randi Kalskin; Hilmo, Bernt Olav; Brattli, Bjørge. (2001) Grunnvarme fra fast fjell - økt energiuttak ved hydraulisk trykking av borebrønner. "Det 10. seminar om hydrogeologi og miljøgeologi" , Trondheim 8.-9. februar 2001 2001-02-08 - 2001-02-09
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Academic lectureRamstad, Randi Kalskin; Brattli, Bjørge; Hilmo, Bernt Olav; Hiorth, Espen. (2001) Grunnvarme fra fast fjell - økt energiuttak ved hydraulisk trykking av borebrønner. Fjellspregningskonferansen 22.nov., Bergmekanikkdagen 23.nov., Geotenikkdagen 23.nov. 2001. , Oslo 2001-11-22 -
2000
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Academic lectureRamstad, Randi Kalskin; Midttømme, Kjersti; Hilmo, Bernt O.. (2000) Mapping the potential of ground-source heat in superficial deposits. 24. Nordic Geological Winter Meeting , Trondheim 6.-9. Januar 2000 2000-01-06 - 2000-01-09
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Academic lectureMidttømme, Kirsti; Hilmo, Bernt Olav; Skarphagen, Olav; Ramstad, Randi Kalskin. (2000) Investigations of the geothermal energy potential in selected areas of Norway. 24th Nordic Geological Winter Meeting , Trondheim 6.-9. Januar 2000 2000-01-06 - 2000-01-09
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PosterMidttømme, Kirsti; Hilmo, Bernt Olav; Skarphagen, Olav; Ramstad, Randi Kalskin. (2000) Mapping of geothermal energy in bedrock. 24th Nordic Geological Winter Meeting , Trondheim 6.-9. Januar 2000-01-06 - 2000-01-09