2023
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1. |
Kvalsvik, Karoline Husevåg; Holmberg, Henrik; Ramstad, Randi Kalskin; Midttømme, Kirsti. Inclusion of advection in fractures in the line source equation for analysis of thermal response tests. Geothermics 2023 ;Volume 117. p. - NORCE NTNU
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2. |
Kvalsvik, Karoline Husevåg; Ramstad, Randi Kalskin; Midttømme, Kirsti; Holmberg, Henrik. Distributed Temperature Sensing measurements for exploring Borehole Thermal Energy Storages in Scandinavia. European Geothermal Workshop; 2023-11-08 - 2023-11-09 NTNU NORCE
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3. |
Ramstad, Randi Kalskin; Midttømme, Kirsti. Muligheter innenfor de nye nasjonale virkemidlene for ENØK. Bergvarme: Veien til energioptimalisering i Norge?; 2023-10-19 - 2023-10-19 NORCE NTNU
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2022
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4. |
Kvalsvik, Karoline; Ramstad, Randi Kalskin; Holmberg, Henrik; Midttømme, Kirsti. Quantification of time-varying groundwater flow in boreholes in fractured crystalline rock using long-term distributed temperature sensing. Norwegian Journal of Geology 2022 ;Volume 102. NORCE NTNU
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5. |
Ramstad, Randi Kalskin; Justo Alonso, Maria; Acuna, José; Andersson, Olof; Stokuca, Milan; Håkansson, Niklas; Midttømme, Kirsti; Rydell, Leif. The borehole thermal energy storage at Emmaboda, Sweden: First distributed temperature measurements. Science and Technology for the Built Environment 2022 p. - NORCE SINTEF NTNU
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6. |
Stenvik, Lars Aaberg; Gjengedal, Sondre; Ramstad, Randi Kalskin; Frengstad, Bjørn. Hydrochemical and biotic control on iron incrustations in groundwater heat pump systems: Case study from a saline, anoxic aquifer in Melhus, Norway. Geothermics 2022 ;Volume 100. p. - NTNU NGI
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7. |
Stenvik, Lars Aaberg; Gjengedal, Sondre; Ramstad, Randi Kalskin; Frengstad, Bjørn S.. 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 2022 ;Volume 81.(4) p. - NTNU NGI
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8. |
Stenvik, Lars Aaberg; Ramstad, Randi Kalskin; Frengstad, Bjørn S.. Optimizing submersible pump regulation of a clogging prone groundwater heat pump system in Melhus, Norway. Science and Technology for the Built Environment 2022 ;Volume 29.(1) p. 86-95 NTNU
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2021
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9. |
Gjengedal, Sondre; Stenvik, Lars Aaberg; Ramstad, Randi Kalskin; Ulfsnes, Jan Ivar; Hilmo, Bernt Olav; Frengstad, Bjørn S.. Online remote-controlled and cost-effective fouling and clogging surveillance of a groundwater heat pump system. Bulletin of Engineering Geology and the Environment 2021 ;Volume 80. p. 1063-1072 NTNU
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10. |
Justo Alonso, Maria; Ramstad, Randi Kalskin; Holmberg, Henrik; Walnum, Harald Taxt; Midttømme, Kirsti; Andersen, Geir. Fjell 2020 High Temperature Borehole Energy Storage - System Control for Various Operation Modes. World Geothermal Congress 2020; 2021-03-30 - 2021-10-27 NTNU NORCE SINTEF
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11. |
Kvalsvik, Karoline; Ramstad, Randi Kalskin; Holmberg, Henrik; Midttømme, Kirsti. EFFECTIVE THERMAL CONDUCTIVITY FROM THERMAL RESPONSE TESTS INCREASES WITH TIME WHEN SUFFICIENT GROUNDWATER FLOW IS PRESENT. Enerstock; 2021-06-09 - 2021-06-11 NORCE NTNU
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12. |
Kvalsvik, Karoline; Ramstad, Randi Kalskin; Midttømme, Kirsti; Holmberg, Henrik. Quantification of grondwater flow using DTS for better BTES design. Vinterkonferansen 2021; 2021-01-06 - 2021-01-08 NORCE NTNU
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13. |
Midttømme, Kirsti; Ramstad, Randi Kalskin; Kvalsvik, Karoline; Justo Alonso, Maria. Geothermal Energy Use in Norway. Country Update for 2015-2019. World Geothermal Congress 2020; 2021-03-30 - 2021-10-27 NORCE NTNU
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14. |
Ramstad, Randi Kalskin. HT-BTES GeoTermos, Norway. Geoenergidagen 2021; 2021-10-06 - 2021-10-07 NTNU
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15. |
Stenvik, Lars Aaberg; Frengstad, Bjørn S.; Gjengedal, Sondre; Ramstad, Randi Kalskin. Diagnosing Encrustation Problems in Open-loop Groundwater Heat Pump Systems in Melhus, Norway. World Geothermal Congress 2020+1 Reykjavik; 2021-03-01 - 2021-10-27 NTNU
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2020
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16. |
Gjengedal, Sondre; Brøtan, Vegard; Buset, Ole Tore; Larsen, Erik; Åsebø Berg, Olav; Torsæter, Ole; Ramstad, Randi Kalskin; Hilmo, Bernt Olav; Frengstad, Bjørn. 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 2020 ;Volume 134. p. 1-40 NTNU SRAUFOSS
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17. |
Gjengedal, Sondre; Ramstad, Randi Kalskin; Hilmo, Bernt Olav; Frengstad, Bjørn S.. 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 2020 ;Volume 79. p. 69-82 NTNU
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18. |
Midttømme, Kirsti; Alonso, Maria Justo; Krafft, Charlotte Gannefors; Kvalsvik, Karoline; Ramstad, Randi Kalskin; Stene, Jørn. Geothermal Energy Use in Norway, Country Update for 2015-2019.. World Geothermal Congress 2020; 2020-04-27 - 2020-05-01 NORCE NTNU
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19. |
Midttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Krafft, Charlotte Gannefors. Geothermal energy systems – understanding the heat exchange by distributed temperature sensing (DTS). 34th Nordic Geological Winter Meeting; 2020-01-08 - 2020-01-10 NORCE NTNU
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20. |
Ramstad, Randi Kalskin; Stenvik, Lars Aaberg. Lena terrasse, Melhus: Long-term performance of GSHP systems for commercial, institutional and multi-family buildings. IEA HPT Annex 52; 2020-11-20 - 2020-11-20 NTNU
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21. |
Stenvik, Lars Aaberg; Ramstad, Randi Kalskin; Kristensen, Lene. Test of Differential Monitoring of Stability (DMS) borehole temperature data to map groundwater flow in the unstable rock mass at Åknes, Norway. I: ISRM International Symposium - EUROCK 2020. Online: https://www.onepetro.org/conferences/ISRM/EUROCK20: International Society for Rock Mechanics and Rock Engineering 2020 ISBN 9788282080729. p. - NTNU
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2019
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22. |
Alonso, Maria Justo; Line, Tor; Næss, Erling; Ramstad, Randi Kalskin; Breuhaus, Peter Helmut Herbert; Midttømme, Kirsti. Lessons learned after one-year of use of a highly efficient neighbourhood in Norway. IOP Conference Series: Materials Science and Engineering 2019 ;Volume 609:072052.(7) p. 1-7 NORCE NTNU SINTEF
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23. |
Gjengedal, Sondre; Stenvik, Lars Aaberg; Storli, Pål-Tore Selbo; Ramstad, Randi Kalskin; Hilmo, Bernt Olav; Frengstad, Bjørn S.. Design of Groundwater Heat Pump Systems. Principles, Tools, and Strategies for Controlling Gas and Precipitation Problems. Energies 2019 ;Volume 12.(19) p. - NTNU
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24. |
Kvalsvik, Karoline; Midttømme, Kirsti; Ramstad, Randi Kalskin. Geothermal Energy Use, Country Update for Norway. European Geothermal Congress 2019; 2019-06-11 - 2019-06-14 NORCE NTNU
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25. |
Midttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Kvalsvik, Karoline; Stene, Jørn. Country News - Norway. IEA HPT Annex 52 3th Expert Meeting; 2019-05-23 - 2019-05-24 NORCE NTNU
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26. |
Midttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Kvalsvik, Karoline; Stene, Jørn; Holmberg, Henrik; Sivertsen, Ove. Norway - Annex 52 Monitoring Projects. IEA HPT Annex 52 3th Expert Meeting; 2019-05-23 - 2019-05-24 NORCE NTNU
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27. |
Midttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Stene, Jørn. Country News- Norway. IEA HPT Annex 52 4th Expert Meeting; 2019-09-16 - 2019-09-17 NORCE NTNU
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28. |
Midttømme, Kirsti; Ramstad, Randi Kalskin; Alonso, Maria Justo; Stene, Jørn. Norway- Annex 52 Monitoring Projects. IEA HPT 4th expert meeting; 2019-09-16 - 2019-09-17 NORCE NTNU
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29. |
Midttømme, Kirsti; Skarphagen, Helge; Ramstad, Randi Kalskin; Bastesen, Eivind; Kvalsvik, Karoline. Developing Borehole Thermal Energy Storage (BTES) towards high temperature (HT) BTES. Geologisk Vintermøte, Bergen; 2019-01-09 - 2019-01-09 NORCE NTNU
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30. |
Stenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. Application of a flow-through cell to monitor groundwater source heat pump systems in Melhus, Norway. 46th IAH Congress: Groundwater management and governance – coping with water scarcity; 2019-09-22 - 2019-09-27 NTNU
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31. |
Stenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. Groundwater source heat pumps systems: Principles and challenges. Clean Energy Symposium; 2019-02-08 - 2019-02-08 NTNU
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32. |
Stenvik, Lars Aaberg; Gjengedal, Sondre; Frengstad, Bjørn S.; Ramstad, Randi Kalskin. ORMEL 2: Iron and manganese encrustations in open-loop ground source heat pump systems. Vinterkonferansen 2019; 2019-01-07 - 2019-01-09 NTNU
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2018
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33. |
; Opsal, Øystein Lid. Geological parameters and shear strength of dry tills from the southern half of Norway in relation to bedrock geology. Trondheim: NTNU 2018 (ISBN 978-82-326-3198-8) 180 p. NTNU
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34. |
Bjugstad, Hanne; Ramstad, Randi Kalskin. Billig, miljøvennlig oppvarming. NTNU
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35. |
Børsum, Henrikke Marie Hogseth. Vanninfiltrasjon i fjellbrønner i forbindelse med drivingen av Follobanetunnelen. Trondheim: NTNU 2018 163 p. NTNU
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36. |
Gjengedal, Sondre; Ramstad, Randi Kalskin; Hilmo, Bernt Olav; Frengstad, Bjørn S.. Video inspection of wells in open loop ground source heat pump systems in Norway. IGSHPA Reasearch Conference 2018; 2018-09-18 - 2018-09-19 NTNU
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37. |
Hellestveit, Martina Seyoum. 3D-modellering av grunnvannstrømning og varmetransport i akviferen i Melhus sentrum - En kvartær- og hydrogeologisk tolkning, med vurdering av uttakskapasitet. Trondheim: NTNU 2018 173 p. NTNU
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38. |
Holmberg, Henrik; Ramstad, Randi Kalskin; Riise, Mari Helen. Temperature profile measurements – easy, cheap and informative. IGSHPA Reasearch Conference 2018; 2018-09-18 - 2018-09-18 NTNU
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39. |
Lende, Ingvild Bjelland. Utvikling av Fingeravtrykkmetoden med analysedata fra passive prøvetakingsenheter - Bruk av kjemiske fingeravtrykk i kildesporing knyttet til miljøovervåkning av hydrokarboner i vannforekomster. Trondheim: NTNU 2018 161 p. NTNU
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40. |
Mevik, Amalie. Numerisk 3D-modellering av hydrogeologiske forhold på Slettemoen,Krødsherad kommune - Vurdering av beskyttelsessoner rundt produksjonsbrønner, bærekraftig grunnvannsuttak og grunnvannsnivå under grustak. Trondheim: NTNU 2018 169 p. NTNU
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41. |
Midttømme, Kirsti; Ramstad, Randi Kalskin. Det grønne skiftet går under jorda. Anleggsmaskinen, nr 4 2018 [Business/trade/industry journal] 2018-06-01 NORCE NTNU
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42. |
Ramstad, Randi Kalskin. Energibrønner som varmekilde for varmepumper. VVS foreningen/CGER, Bergen 10 april 2018; 2018-04-10 - 2018-04-10 NTNU
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43. |
Ramstad, Randi Kalskin; Midttømme, Kirsti. Framtidens lager för värme och kyla. Energiforsk [Internet] 2018-09-24 NORCE NTNU
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44. |
Solberg, Runa Aronsen. Modification of Existing Permeameters to Estimate Hydraulic Conductivity of Groundwater in Unconsolidated Sand in the Laboratory. Trondheim: NTNU 2018 160 p. NTNU UiO
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45. |
Stenvik, Lars Aaberg. Bruk av temperaturmålinger til kartlegging av grunnvannsstrømning - Test og metodeutvikling med data fra Åknes. Trondheim: NTNU 2018 118 p. NTNU
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46. |
Velstad, Viveke. Evaluering av ENKIs muligheter innen skredvarsling. Trondheim: NTNU 2018 140 p. NTNU
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2017
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47. |
Anderssen, Anja Beate Skogheim. Grunnvannsbaserte varmepumper Tilrettelegging for bruk av grunnvann til oppvarming og kjøling i Melhus sentrum - sentralisert løsning. Trondheim: NTNU 2017 112 p. NTNU
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48. |
Brøste, Heidi Marstein. Vannkvalitet knyttet til grunnvannsbaserte grunnvarmeanlegg i Melhus og Elverum. Trondheim: NTNU 2017 133 p. NTNU
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49. |
Flugsrud, Inger Strøm. Vann- og varmetransport i grunnvannsakviferen i Melhus sentrum - konseptuell vurdering.. Trondheim: NTNU 2017 122 p. NTNU
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50. |
Ramstad, Randi Kalskin. Aquifer Thermal Energy Storage (ATES) and direct use of groundwater for heating and cooling – Norwegian experiences. Seminar Poland, Iceland, EGEC, Norway Bergen; 2017-10-10 NTNU
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