A modeling of electricity generation by using geothermal assisted organic Rankine cycle with internal heat recovery

Canbolat A. S., Bademlioglu A. H., Kaynakli Ö.

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, vol.45, no.1, pp.212-228, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 1
  • Publication Date: 2023
  • Doi Number: 10.1080/15567036.2019.1684598
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, ABI/INFORM, Aerospace Database, Agricultural & Environmental Science Database, Applied Science & Technology Source, CAB Abstracts, Communication Abstracts, Compendex, Computer & Applied Sciences, Environment Index, Greenfile, INSPEC, Metadex, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Page Numbers: pp.212-228
  • Keywords: organic Rankine cycle, energy and exergy analysis, geothermal, internal heat recovery, refrigerant, PERFORMANCE ANALYSIS, WORKING FLUIDS, THERMODYNAMIC ANALYSIS, EXERGETIC ANALYSIS, SOLAR, POWER, ORC, OPTIMIZATION, TEMPERATURE, SELECTION
  • Bursa Uludag University Affiliated: Yes


In this study, the performance of organic Rankine cycle (ORC), which produces electrical energy, was examined by using a geothermal resource with a temperature of 145 degrees C. The fluids used in the system were determined as dry type fluids, and R142b, R227ea, R245fa, R600, and R600a were preferred as a working fluid. Within the scope of this study, energy and exergy analysis of the system was performed for different evaporator pressures (1000-2000 kPa). With the help of these analyses, the performances of the cycle elements were examined and the first and second law efficiencies of the system were compared for different refrigerants. Considering the selection of refrigerant, and evaporator pressure within the scope of this study, the first and second law efficiencies of the cycle have enhanced maximum of 4.86% and 19.78%, respectively.