2022

• 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. volum 100.
  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. volum 81 (4).
  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. volum 80.
  Academic article
• Sowizdzal, Anna; Gladysz, Pawel; Andresen, Trond; Miecznik, Maciej; Frengstad, Bjørn S.; Liszka, Marcin; Chmielowska, Anna; Gawron, Marcel; Løvseth, Sigurd Weidemann; Pajak, Leszek; Stenvik, Lars Aaberg; Tomaszewska, Barbara. (2021) CO2-enhanced geothermal systems for climate neutral energy supply. TCCS–11. CO2 Capture, Transport and Storage. Trondheim 22nd–23rd June 2021. Short Papers from the 11th International Trondheim CCS Conference.
  Academic chapter/article/Conference paper

2020

• Gjengedal, Sondre; Brøtan, Vegard; Buset, Ole Tore; Larsen, Erik; Åsebø Berg, Olav; Torsæter, Ole; Ramstad, Randi Kalskin; Hilmo, Bernt Olav; Frengstad, Bjørn. (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. volum 134.
  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. volum 79.
  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. volum 12 (19).
  Academic article
• Skarphagen, Helge; Banks, David; Frengstad, Bjørn S.; Gether, Harald. (2019) Design considerations for borehole thermal energy storage (BTES): A review with emphasis on convective heat transfer. Geofluids. volum 2019:4961781.
  Academic literature review

2017

• Bottrell, Simon; Hipkins, Emma V.; Lane, James M.; Zegos, Rose A.; Banks, David; Frengstad, Bjørn. (2017) Carbon-13 in groundwater from English and Norwegian crystalline rock aquifers: a tool for deducing the origin of alkalinity?. Sustainable Water Resources Management.
  Academic article
• Dutova, Ekaterina M.; Nikitenkov, Aleksei N.; Pokrovskiy, Vitaly D.; Banks, David; Frengstad, Bjørn; Parnachev, Valerii P.. (2017) Modelling of the dissolution and reprecipitation of uranium under oxidising conditions in the zone of shallow groundwater circulation. Journal of Environmental Radioactivity. volum 178-179.
  Academic article

2014

• Frengstad, Bjørn S.; Banks, David. (2014) Uranium distribution in groundwater from fractured crystalline aquifers in Norway. Fractured Rock Hydrogeology.
  Academic chapter/article/Conference paper

2012

• 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. volum 71 (3).
  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. volum 71 (2).
  Academic article
• Liebel, Heiko; de Beer, Johannes; Frengstad, Bjørn; Kalskin Ramstad, Randi; Brattli, Bjørge. (2012) Effect of water yield and rock thermal conductivities on TRT results. Comunicações Geológicas. volum 99 (1).
  Academic article

2010

• Frengstad, Bjørn S.; Lax, Kaj; Tarvainen, Timo; Jæger, Øystein; Wigum, Børge Johannes. (2010) The chemistry of bottled mineral and spring waters from Norway, Sweden, Finland and Iceland. Journal of Geochemical Exploration.
  Academic article

2009

• Karnachuk, Olga V.; Gerasimchuk, A.L.; Banks, David; Frengstad, Bjørn S.; Stykon, G.A.; Tikhonova, Z.L.; Kaksonen, A.; Puhakka, J.; Yanenko, A.S.; Pimenov, N.V.. (2009) Bacteria of the sulfur cycle in the sediments of gold mine tailings, Kuznetsk Basin, Russia. Microbiology. volum 78 (4).
  Academic article

2008

• Frengstad, Bjørn S.; Banks, David. (2008) The Natural Inorganic Chemical Quality of Crystalline Bedrock Groundwaters of Norway. Natural Groundwater Quality.
  Academic chapter/article/Conference paper

2007

• Frengstad, Bjørn S.; Banks, David. (2007) Universal controls on the evolution of groundwater chemistry in crystalline bedrock: the evidence from empirical and theoretical studies. Groundwater in fractured rocks. Selected papers from Groundwater in Fractured Rocks International Conference, Prague. IAH selected papers Vol. 9.
  Academic chapter/article/Conference paper
• Reimann, Clemens; Grimstvedt, Andreas Magnar; Frengstad, Bjørn S.; Finne, Tor Erik. (2007) White HDPE bottles as source of serious contamination of water samples with Ba and Zn. Science of the Total Environment. volum 374 (2-3).
  Academic article

2006

• Banks, David; Frengstad, Bjørn S.. (2006) Evolution of groundwater chemical composition by plagioclase hydrolysis in Norwegian anorthosites. Geochimica et Cosmochimica Acta. volum 70 (6).
  Academic article

2002

• Frengstad, Bjørn. (2002) Groundwater quality of crystalline bedrock aquifers in Norway. 2002. ISBN 82-471-5449-8.
  Doctoral dissertation
• Banks, David; Karnachuk, Olga V.; Parnachov, Valerij P.; Holden, Wayne; Frengstad, Bjørn Syvert. (2002) Rural pit latrines as a source of groundwater contamination; examples from Siberia and Kosova. Water and Environment Journal. volum 16 (2).
  Academic article

2001

• Frengstad, Bjørn; Banks, David; Siewers, Ulrich. (2001) The chemistry of Norwegian groundwaters: IV. The pH-dependence of element concentrations in crystalline bedrock groundwaters. The Science of the Total Envinronment.
  Academic article

2000

• Frengstad, Bjørn; Midtgård Skrede, Aase Kjersti; Banks, David; Krog, Jan Reidar; Siewers, Ulrich. (2000) The Chemistry of Norwegian Groundwaters III. The Distribution of Trace Elements in 476 Crystalline Bedrock Groundwaters, as Analysed by ICP-MS Techniques. Science of the Total Environment.
  Academic article

1999

• Misund, Arve; Frengstad, Bjørn; Siewers, Ulrich; Reimann, Clemens. (1999) Variation of 66 elements in European bottled mineral waters. Science of the Total Environment.
  Academic article
• Rokoengen, Kåre; Frengstad, Bjørn. (1999) Radiocarbon and seismic evidence of ice sheet extent and the last deglaciation on the mid-Norwegian continental shelf. Norsk Geologisk Tidsskrift. volum 79 (2).
  Academic article

1998

• Banks, David; Frengstad, Bjørn; Midtgård, Aase Kjersti; Krog, Jan Reidar; Strand, Terje. (1998) The chemistry of Norwegian groundwaters: I. The distribution of radon, major and minor elements in 1604 crystalline bedrock groundwaters. The Science of the Total Envinronment.
  Academic article
• Banks, David; Midtgård, Aase Kjersti; Frengstad, Bjørn; Krog, Jan Reidar; Strand, Terje. (1998) The chemistry of Norwegian groundwaters. II. The chemistry of 72 groundwaters from Quaternary sedimentary aquifers. The Science of the Total Envinronment.
  Academic article