Comparative investigation of working fluids for an organic Rankine cycle with geothermal water

Archives of Thermodynamics

Yan-Na LiuFaculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, ChinaOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Song XiaoCorresponding authorFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaEmailOther articles by this author:De Gruyter OnlineGoogle Scholar² 

[1] Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, 650500, China;Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China

关键词: Keywords: Geothermal water;    Energy efficiency;    Organic Rankine cycle;   

DOI  :  10.1515/aoter-2015-0016

学科分类：能源（综合）

来源: Polska Akademia Nauk * Oddzial w Gdansku, Instytut Maszyn Przeplywowych / Polish Academy of Sciences, Institute of Fluid-Flow Machinery

【 摘 要 】

In this paper, the thermodynamic investigation on the use of geothermal water (130 °C as maximum) for power generation through a basic Rankine has been presented together with obtained main results. Six typical organic working fluids (i.e., R245fa, R141b, R290, R600, R152a, and 134a) were studied with modifying the input pressure and temperature to the turbine. The results show that there are no significant changes taking place in the efficiency for these working fluids with overheating the inlet fluid to the turbine, i.e., efficiency is a weak function of temperature. However, with the increasing of pressure ratio in the turbine, the efficiency rises more sharply. The technical viability is shown of implementing this type of process for recovering low temperature heat resource.

【 授权许可】

Unknown