Optimization of low temperature geothermal organic Rankine power generation system

Energy Reports

Jiajun Guo¹  Youyuan Shao²  Bing Hu³  Yu Yang³ 

[1] Corresponding author.;Dongguan City College, Dongguan 523419, China;Guangdong Provincial Key Laboratory of Distributed Energy Systems, Guangdong Provincial Engineering Research Center of Distributed Energy Systems, Dongguan University of Technology, Dongguan 523808, China;

关键词: Low temperature geothermal energy;    System optimization;    Organic Rankine;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this paper, a low-temperature geothermal organic Rankine Cycle (ORC) power generation system model is established. R245fa is used as the circulating working fluid. The calculation program is compiled using the engineering calculation software EES, and the thermodynamic parameters and thermodynamic properties of the main state points of the ORC are theoretically calculated. The effects of narrow point temperature difference, evaporation temperature, geothermal water temperature and condenser end temperature difference on system performance are analyzed. The results show that the narrow point temperature difference has a significant impact on the ORC performance. Considering system performance and economic cost comprehensively, the best narrow point temperature difference and the best condenser end temperature difference are both within the range of 5–7 K.

【 授权许可】

Unknown