Assessment of the Effective Variants Leading to Higher Efficiency for the Geothermal Doublet, Using Numerical Analysis?Case Study from Poland (Szczecin Trough)

Anna Wachowicz-Pyzik, Anna Sowiżdżał, Leszek Pająk, Paweł Ziółkowski and Janusz Badur
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Anna Wachowicz-Pyzik: Department of Fossil Fuels, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Krakow, Poland
Anna Sowiżdżał: Department of Fossil Fuels, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Krakow, Poland
Leszek Pająk: Department of Fossil Fuels, Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Krakow, Poland
Paweł Ziółkowski: Department of Energy and Industrial Apparatus, Faculty of Mechanical Engineering, Gdańsk University of Technology, 80-233 Gdańsk, Poland
Janusz Badur: Energy Conversion Department, Institute of Fluid Flow Machinery, Polish Academy of Science, 80-231 Gdańsk, Poland

Energies, 2020, vol. 13, issue 9, 1-20

Abstract: Numerical models of geothermal doublet allows us to reduce the high risk associated with the selection of the most effective location of a production well. Furthermore, modeling is a suitable tool to verify possible changes in operational geothermal parameters, which guarantees liveliness of the system. An appropriate selection of software as well as the methodology used to generate numerical models significantly affects the quality of the obtained results. In this paper, the authors discuss the influence of such parameters as grid density and distance between wells on the efficiency of geothermal heating plant. The last stage of the analysis was connected with estimation of geothermal power potential for a hypothetical geothermal doublet. Numerical simulations were carried out using the TOUGH2 code, which applies the finite-difference method. The research was conducted in the Szczecin Trough area (NW Poland), based on archival data from Choszczno IG-1 well. The results demonstrated that in the studied case of the Choszczno region, the changes in the distance of boreholes can have a visible influence on obtained results; however the grid density of the numerical model did not achieve a significant impact on it. The results show the significant importance of numerical modeling aimed at increasing the efficiency of a potential geothermal heating plant.

Keywords: geothermal energy; numerical modeling; geothermal power potential; finite-differences method (FDM); TOUGH2; geothermal doublet; Szczecin Trough; Poland (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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