Geothermal Power Generation: Harnessing Electrical Energy Through The Organic Rankine Cycle (ORC) System

Authors

  • Ahmad Zikri Department of Mechanical Engineering, Faculty of Engineering, Bursa Uludag University, Bursa 16059, Türkiye
  • Herlin Sumarna Mechanical Engineering, Politeknik Negeri Sriwijaya, Palembang, Indonesia
  • Baiti Hidayati Mechanical Engineering, Politeknik Negeri Sriwijaya, Palembang, Indonesia
  • Zainuri Anwar Mechanical Engineering, Politeknik Negeri Sriwijaya, Palembang, Indonesia
  • Fenoria Putri Mechanical Engineering, Politeknik Negeri Sriwijaya, Palembang, Indonesia
  • Ahmad Zamheri Mechanical Engineering, Politeknik Negeri Sriwijaya, Palembang, Indonesia
  • Semir M Negash Mechanical and Industrial Engineering Department, Addis Ababa Institute of Technology, Addis Ababa University, Addis Ababa, Ethiopia
  • Gaizka Ghifari Nasution Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Indonesia

DOI:

https://doi.org/10.53893/ijmeas.v2i1.235

Keywords:

Efficiency, Geothermal Power Generation, Organic Rankine Cycle (ORC), Refrigerant, Renewable Energy

Abstract

The research employs a thermodynamic simulation method using an Engineering Equation Solver (EES), relying on theoretical calculations. This method is integrated into a geothermal power plant, precisely focusing on geothermal source temperatures of approximately 95ºC. The investigation centers on the heat transfer process within a high-temperature heat transfer fluid from geothermal sources, conveying stored heat to the Organic Rankine Cycle (ORC) evaporator. Three specific working fluids, R134a, R11, and R22, examine working fluid selection for ORC at 95ºC. The results highlight the R11 organic fluid as an optimal compromise, excelling in two crucial criteria. Firstly, R11 exhibits the highest net mechanical power, = 34.81 kW compared to alternative fluids. Secondly, it boasts the best energetic efficiency of the cycle, registering  = 16.01%, outperforming both R134a ( = 13.17%) and R22 ( = 12.64%). In summary, this study conducts a focused analysis of the energy aspects of an Organic Rankine Cycle (ORC) for electricity production using geothermal sources and organic fluids. Operating at a geothermal source temperature of 95ºC with a water flow rate of 80 lt/s and environmental conditions at 20ºC, the parametric study emphasizes the superiority of the R11 organic fluid. R11 emerges as the optimal choice, demonstrating the highest net mechanical power and superior energetic efficiency compared to alternative fluids, thereby contributing valuable insights to advancing sustainable and efficient energy technologies.

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Published

2024-01-31

How to Cite

Zikri, A., Sumarna, H. ., Hidayati, B., Anwar, Z., Putri, F., Zamheri, A., … Nasution, G. G. (2024). Geothermal Power Generation: Harnessing Electrical Energy Through The Organic Rankine Cycle (ORC) System. International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS), 2(1), 14–19. https://doi.org/10.53893/ijmeas.v2i1.235

Issue

Vol. 2 No. 1 (2024): IJMEAS - January

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Articles

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