2026-10-02T08:20:41Zhttps://skemman.is/oai/request

oai:skemman.is:1946/287342021-04-14T13:25:49Zcom_1946_6870com_1946_6001col_1946_34328

Háskólinn í Reykjavík Lauren Elizabeth Hillis 1992- María Sigríður Guðjónsdóttir 1977- Sverrir Þórhallsson 1944- Scherer, Joseph The feasibility of converting non-producing geothermal wells to closed loop supercritical CO2 coaxial heat exchanger using ECO2G technology was analyzed for two heat exchanger scenarios. The first scenario, Case A, utilizes the existing production casing as the heat exchanger and plugs the well at 1000 m depth to create the closed loop. The second scenario, Case B, inserts a new, closed, hang-down liner to the full 2500 m depth to use as the heat exchanger. A spreadsheet thermodynamic model discretized the depth of the well to model the heat flow, temperature and pressure of the sCO2, and electricity production of each heat exchanger. With the electricity production, the NPV and IRR of Case A and Case B were performed, along with a sensitivity analysis. From this study, the feasibility of the project was determined. Attached is my full thesis, signature page, cover page, and closed thesis form. This thesis is to be closed. 2017-08-30T11:42:15Z 2017-08-30T11:42:15Z 2017-08-30T11:42:16Z 2017-06-06T18:03:08Z 2017-06 http://hdl.handle.net/1946/28734 en Orkuverkfræði Jarðhiti Varmaskiptar Meistaraprófsritgerðir Tækni- og verkfræðideild Sustainable Energy Engineering Heat exchangers School of Science and Engineering Feasibility of supercritical CO2 coaxial heat exchanger geothermal well conversion with ECO2G technology Hagnýting yfirkrítísks CO2 kóaxíal varmaskiptis við umbreytingu jarðhitabrunns með ECO2G tækni Thesis Master's