能源，火能和地热发电厂的经济分析

xinmeng

能源，火能和地热发电厂的经济分析

Ager,2018, 2(2): 190-209

原文网址：http://www.astp-agr.com/index.php/Index/Index/detail?id=63

  最近，伊朗伊斯兰阿萨德大学的Kazemi, H.和Ehyaei, M.A.开展研究旨在Damavand地区Nonal地区设计一个地热发电厂，以同时在Damavand市和德黑兰省的一部分电网中产生热能，上述周期的有机工作流体为R245fa，它是一种干燥型非易燃液体。能效，火能，净熵变率和比输出功分别为18.2％，21.3％，172.97 kW / K和31.43 kJ / kg。钻井成本以及Damavand地热发电厂的设计和建造成本分别为4.2亿美元和5.215亿美元。此外，Damavand发电厂每千瓦时的发电成本为17美分。估算的投资回收期为15年。对一年中不同月份的周期分析表明，火用效率几乎没有变化。温度变化的唯一显著影响是火用效率，大约是每年2%的变化。

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

Hamid Kazemi, M.A. Ehyaei

(Published: 2018-04-10)

CorrespondingAuthor and Email: M.A. Ehyaei, aliehyaei@yahoo.com

---

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.

---

ArticleType: Original article

---

Abstract：

     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.