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Comparative thermodynamic evaluation of a geothermal power plant by using the advanced exergy and artificial bee colony methods

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  • Özkaraca, Osman
  • Keçebaş, Ali
  • Demircan, Cihan

Abstract

In this study, the thermodynamic performance of a binary geothermal power plant (GPP) is comparatively evaluated using the exergy analysis and optimization method. Thus, in addition to routes to improve the thermodynamic performance of the system, the thermodynamic relationships between the system components and improvement performances of the components are determined. With this aim, the Sinem GPP located in Aydın province in Turkey as a real system is selected. All data from the system are collected and a numerical model simulating the real system is developed. On the developed model, the conventional and advanced exergy analyses for exergy analysis and the artificial bee colony (ABC) method for optimization process are performed. The results of the study show that total exergy efficiencies of the conventional exergy analysis, advanced exergy analysis and artificial bee colony are determined as 39.1%, 43.1% and 42.8%, respectively. The exergy efficiency obtained from advanced exergy analysis is higher compared to the other two methods. This is due to the fact that theoretical and unavoidable operation assumptions in advanced exergy analysis are arbitrary as a single value depending on the decision maker. However, decision variables in the ABC method are within certain constraints chosen by the decision maker. It is better to select constraint limits instead of an arbitrary single value selection. Therefore, its arbitrary values should be confirmed with any optimization method. Additionally, the highest exergy destruction identified in the three methods is occurred in heat exchangers as the condenser and vaporizer.

Suggested Citation

  • Özkaraca, Osman & Keçebaş, Ali & Demircan, Cihan, 2018. "Comparative thermodynamic evaluation of a geothermal power plant by using the advanced exergy and artificial bee colony methods," Energy, Elsevier, vol. 156(C), pages 169-180.
    • Handle: RePEc:eee:energy:v:156:y:2018:i:c:p:169-180
    DOI: 10.1016/j.energy.2018.05.095
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    Citations

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    Cited by:

    1. Gürbüz, Emine Yağız & Güler, Onur Vahip & Keçebaş, Ali, 2022. "Environmental impact assessment of a real geothermal driven power plant with two-stage ORC using enhanced exergo-environmental analysis," Renewable Energy, Elsevier, vol. 185(C), pages 1110-1123.
    2. 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.
    3. Abdolalipouradl, Mehran & Mohammadkhani, Farzad & Khalilarya, Shahram, 2020. "A comparative analysis of novel combined flash-binary cycles for Sabalan geothermal wells: Thermodynamic and exergoeconomic viewpoints," Energy, Elsevier, vol. 209(C).
    4. Çetin, Gürcan & Özkaraca, Osman & Keçebaş, Ali, 2021. "Development of PID based control strategy in maximum exergy efficiency of a geothermal power plant," Renewable and Sustainable Energy Reviews, Elsevier, vol. 137(C).
    5. Çetin, Gürcan & Keçebaş, Ali, 2021. "Optimization of thermodynamic performance with simulated annealing algorithm: A geothermal power plant," Renewable Energy, Elsevier, vol. 172(C), pages 968-982.

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