Development and multiobjective optimization of an integrated flash-binary geothermal power plant with reverse osmosis desalination and absorption refrigeration for multi-generation

Gnaifaid H., ÖZCAN H.

Geothermics, vol.89, 2021 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 89
  • Publication Date: 2021
  • Doi Number: 10.1016/j.geothermics.2020.101949
  • Journal Name: Geothermics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Environment Index, Greenfile, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: Geothermal energy, Binary power, Desalination, Multigeneration, Thermoeconomic, Multiobjective optimization
  • Ankara Yıldırım Beyazıt University Affiliated: Yes

Abstract

© 2020 Elsevier LtdThis study investigates the thermodynamic and economic aspects of a multigeneration plant for inherent production of freshwater, power, cooling and heating by utilizing geothermal energy. The developed plant utilizes geothermal energy at a target temperature of 200 °C through a single flash-binary power plant with reinjection. The results of the thermodynamic analysis show that the overall plant energy and exergy efficiency of the plant can be as high as 61 % and 37.8 %, respectively, while the plant cost varies between 160–330 $/h. Optimization results show that an optimal exergy efficiency of 58 % is achievable when the plant cost rate is 242 $/h. The results indicate that geothermal driven freshwater production is one of the most economically feasible renewable driven clean production options, while a flash/binary power plant results in higher efficiency and lower electricity costs.