摘要
有机朗肯循环(organic rankine cycle,ORC)是利用地热发电的重要途径之一,而有机工质的物性是影响ORC发电效率的主要因素。针对地热水的特点,筛选了R134a、R245fa等6种有机工质,并对每种工质的余热发电系统进行计算。从系统的热效率、不可逆损失、压力水平及环保性等方面综合分析,得出R245fa是低温地热水ORC发电系统比较适合的有机工质。
Organic Rankine Cycle （ORC） is one of the important ways to generate electricity with geothermal resource, and the physical property of organic working fluid is the main factor that influences the efficiency of ORC power generation. According to the characteristics of geothermal water, 6 kinds of organic working fluids, such as R134a and R245fa were selected, and the waste heat power generation system with each selected fluids were calculated repectively. Through the comprehensive analysis of system＇s thermal efficiency, irreversible loss, pressure level and environmental protection, R245fa is found suitable organic working fluid for ORC power generation system with low temperature geothermal water.
出处
《电力建设》
2013年第5期44-48,共5页
Electric Power Construction
基金
江苏省科委项目(BA2010035)
关键词
地热发电
有机朗肯循环(ORC)
工质
低温地热水
geothermal power generation
organic rankine cycle （ORC）
working fluids
low temperature geothermal water
