A Systematic Review of the Design and Heat Transfer Performance of Enhanced Closed-Loop Geothermal Systems

Andres Budiono, Suyitno Suyitno, Imron Rosyadi, Afif Faishal and Albert Xaverio Ilyas
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Andres Budiono: Department of Mechanical Engineering, Sebelas Maret University, Surakarta 57126, Indonesia
Suyitno Suyitno: Department of Mechanical Engineering, Sebelas Maret University, Surakarta 57126, Indonesia
Imron Rosyadi: Department of Mechanical Engineering, Sebelas Maret University, Surakarta 57126, Indonesia
Afif Faishal: Department of Mechanical Engineering, Sebelas Maret University, Surakarta 57126, Indonesia
Albert Xaverio Ilyas: Department of Mechanical Engineering, Sebelas Maret University, Surakarta 57126, Indonesia

Energies, 2022, vol. 15, issue 3, 1-17

Abstract: Geothermal energy is one of the primary sources of clean electricity generation as the world transitions away from fossil fuels. In comparison to enhanced geothermal methods based on artificial fracturing, closed-loop geothermal systems (CLGSs) avoid seismicity-induced risk, are independent of reservoir permeability, and do not require the direct interaction between the fluid and the geothermal reservoir. In recent years, the development of CLGS technologies that offer high energy efficiencies has been explored. Research on coaxial closed-loop geothermal systems (CCLGS) and U-shaped closed-loop geothermal system (UCLGS) systems were reviewed in this paper. These studies were categorized based on their design, modeling methods, and heat transfer performance. It was found that UCLGSs had superior heat transfer performances compared to CCLGS. In addition, UCLGSs that utilized CO 2 as a working fluid were found to be promising technologies that could help in addressing the future challenges associated with zero-emission compliance and green energy demand. Further research to improve the heat transfer performance of CLGS, especially with regards to improvements in wellbore layout, equipment sizing, and its integration with CO 2 capture technologies is critical to ensuring the feasibility of this technology in the future.

Keywords: systematic review; heat transfer performance; closed loop; CLGS; enhanced geothermal system (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: 2022
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Citations: View citations in EconPapers (3)

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