摘要
本文基于R123、R245fa和异戊烷工质对中低温地热能有机朗肯循环发电系统的性能影响进行了分析,在地源热水温度为90~140℃时,计算冷凝器、蒸发器换热量、泵功率及系统的热效率、损失、不可逆损失等。结果表明:地热源温度越高,系统热效率越高,且同一热源温度下,异戊烷作为工质的系统热效率、损失最高,R245fa次之,R123均最低。
Based on R123 ,R245fa and iso -pentane as the refrigerants, the influence of the ground heat temperature on the performances of organic Rankine cycle power - generating systemwas analysed. These perameters including the heat - transfer ca- pacities of expander, condenser, refrigerant pump and evaporator, system efficiency ,exergy and irreversible losses were calculat- ed when the ground heat source temperature was the range of 90 to 140℃. The results show that the system efficiency is highest and the exergy loss is also highest for iso -pentane as an organic refrigerant, followed sequentially by R245fa and R123.
出处
《低温与超导》
北大核心
2017年第10期65-70,共6页
Cryogenics and Superconductivity
基金
河南省高等学校供热空调重点学科开放实验室研究基金项目(2017HAC203)
河南省高等学校重点科研项目基础研究计划课题(18B210016)
关键词
有机朗肯循环(ORC)
地热发电
热源温度
Organic rankine cycle（ORC）, Geothermal power generation, Heat source temperature
