摘要
有机朗肯循环采用有机物代替水作为循环工质,在回收低品位热能方面具有很大的优势。工质的特性是影响有机郎肯循环系统性能的重要因素之一,有机工质的选择应该满足环保性、安全性及热物性等方面的要求。选取了R600,R600a,R245fa,R236fa,R236ea,R601,R601a,RC318,R227ea作为循环工质,在不同的蒸发温度条件下,对其热力循环特性进行了计算分析,从蒸发压力、热效率、功比、膨胀比和汽耗率等方面进行了比较。结果表明,R601是适合本循环系统的最佳工质。
A Rankine cycle using organic fluids as working fluids,called organic Rankine cycle（ORC）,is potentially feasible in recovering low enthalpy containing heat sources.The choices of working fluid should meet the requirement of environment,safety,critical pressure and critical temperature etc.Under the proposed working conditions,R600,R600a,R245fa,R236fa,R236ea,R601,R601a,RC318,R227ea are chosen as the working fluids of the low-temperature solar Rankine cycle system,then those working fluids are investigated and compared from aspects of pressure,cycle efficiency,work ratio,vapor consumption rate and pressure ratio.Results show that R601 is an available and effective working fluid for low-temperature solar Rankine cycle.
出处
《华东电力》
北大核心
2011年第6期952-956,共5页
East China Electric Power
关键词
有机朗肯循环
低温热发电
干工质
热效率
organic Rankine cycle（ORC）
low-temperature thermal power generation
wet fluid
thermal efficiency
