Open Access Articles

Contact Us

Ausasia Science and Technology Press, Australia

Press address: Unit 3/3 Peace St, Box Hill South, Melbourne, Victoria 3128, Australia

Press email:

Press phone: 0421672696

Journal office email:

Our Visitors

437476 visitors Look details

Energy, exergy, and economic analysis of a geothermal power plant

Hamid Kazemi, M.A. Ehyaei

(Published: 2018-04-10)

Corresponding Author and Email:M.A. Ehyaei,

Citation:Kazemi, H., Ehyaei, M.A. Energy, exergy, and economic analysis of a geothermal power plant. Advances in Geo-Energy Research, 2018, 2(2): 190-209, doi: 10.26804/ager.2018.02.07.

Article Type:Original article


The current study aimed at designing a geothermal power plant in the Nonal area in Damavand district for simultaneous generation of thermal energy the electric power in the network of Damavand City and a part of Tehran province, the organic working fluid for the above cycle is R245fa which is a non-flammable fluid of dry type. The values of energy efficiency, exergy, the net rate of entropy change, and the specific output power were calculated as 18.2%, 21.3%, 172.97 kW/K, and 31.43 kJ/kg, respectively. The cost of drilling a well, as well as designing and construction of Damavand’s geothermal power plant, were calculated to be 4.2 and 521.5 million (USD), respectively. Also, the cost per generation of each kW/h of power in Damavand power plant was 17 cents. The estimated payback time is calculated as 15 years. The analysis of the cycle in different months of the year showed that exergy efficiency has little change. The only significant effect of temperature changes was on the exergy efficiency as approximately a change of 2% can be seen during a year.

Keywords:Geothermal cycle, Organic Rankine Cycle, exergy.


Download this Manuscript:PDF

Copyright ©2016. All Rights Reserved