Journal publications

• 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. vol. 80.
• 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. vol. 134.
• 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. vol. 79.
• 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. vol. 12 (19).
• 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. vol. 2019:4961781.
• 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.
• 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. vol. 178-179.
• Flem, Belinda; Reimann, Clemens; Birke, Mannfred; Banks, David; Filzmoser, Peter; Frengstad, Bjørn S.. (2015) Inorganic chemical quality of European tap-water: 2. Geographical distribution. Applied Geochemistry.
• 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. vol. 71 (3).
• 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. vol. 71 (2).
• 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. vol. 99 (1).
• 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). vol. 451.
• 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.
• 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. vol. 78 (4).
• Liebel, Heiko; Frengstad, Bjørn; Ramstad, Randi; Brattli, Bj�rge. (2008) Low enthalpy geothermal energy in fractured rock aquifers. 33rd International Geological Congress, Abstracts.
• 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. vol. 374 (2-3).
• Banks, David; Frengstad, Bjørn S.. (2006) Evolution of groundwater chemical composition by plagioclase hydrolysis in Norwegian anorthosites. Geochimica et Cosmochimica Acta. vol. 70 (6).
• Reimann, Clemens; Bjorvatn, Kjell; Frengstad, Bjørn; Melaku, Zenebe; Tekle-Haimanot, Redda; Siewers, Ulrich. (2003) Drinking water quality in the Ethiopian section of the East African Rift Valley I-Date and health aspects. Science of the Total Environment.
• Banks, David; Parnachov, Valerij P.; Frengstad, Bjørn; Holden, Wayne; Vedernikov, Anatoly A.; Karnachuk, Olga V.. (2002) Alkaline mine drainage from metal sulphide and coal mines: examples from Svalbard and Siberia. Geological Society Special Publication.
• Frengstad, Bjørn; Banks, David; Midtgård Skrede, Aase; Krogh, Jan Reidar; Siewers, Ulrich; Strand, Terje. (2002) The hydrochemistry of crystaline bedrock groundwater in Norway. NGU-Bulletin. vol. 439.