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Advanced Exergoeconomic Assessment of CO 2 Emissions, Geo-Fluid and Electricity in Dual Loop Geothermal Power Plant

Author

Listed:
  • Onur Vahip Güler

    (Department of Energy Systems Engineering, Muğla Sıtkı Koçman University, 48000 Muğla, Turkey)

  • Emine Yağız Gürbüz

    (Department of Energy Systems Engineering, Muğla Sıtkı Koçman University, 48000 Muğla, Turkey)

  • Aleksandar G. Georgiev

    (Department of General Engineering, University of Telecommunications and Posts, 1 Akad. Stefan Mladenov Str., 1700 Sofia, Bulgaria)

  • Ali Keçebaş

    (Department of Energy Systems Engineering, Muğla Sıtkı Koçman University, 48000 Muğla, Turkey)

Abstract

Binary geothermal power plants (GPPs) are mostly encountered in geothermal fields with medium and low temperatures. The design and operation of dual binary GPPs can be difficult due to the geothermal fluid properties. This affects their performance and feasibility. Thermoeconomics are essential elements for the design and operation of the GPPs. In this study, advanced exergoeconomic analysis is applied to a true dual binary GPP (as a case study) to further evaluate it from performance and economic perspectives. In analysis, the specific exergy cost (SPECO) method is used. Then, some specific indicators are presented to evaluate the performance and economics of the GPP. Thus, technical and economic solutions have been developed in the design and operation stages through the analysis. The results of the study indicated that the total operating cost of 1218 USD/h could be reduced to 186 USD/h by improving the operating conditions. This corresponds to an 85% decrease. The cost per electricity generated, cost per geothermal energy input, and cost per CO 2 emission of the GPP are determined as 0.049 USD/kWh, 5.3 USD/GJ, and 0.13 USD/kg, respectively. As a result, while the savings potential of the GPP is 15%, it can result in a 15% reduction in CO 2 emission cost.

Suggested Citation

  • Onur Vahip Güler & Emine Yağız Gürbüz & Aleksandar G. Georgiev & Ali Keçebaş, 2023. "Advanced Exergoeconomic Assessment of CO 2 Emissions, Geo-Fluid and Electricity in Dual Loop Geothermal Power Plant," Energies, MDPI, vol. 16(8), pages 1-24, April.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:8:p:3466-:d:1124199
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    References listed on IDEAS

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