摘要
以低温热蒸汽来模拟废热作为有机朗肯循环(ORC)的热源,建立了以R134a为制冷剂的有机朗肯循环发电系统。通过EES(engineering equation solver)软件对ORC系统进行了数学建模,并将实验与模拟结果进行了比较。结果表明:系统以R134a为工质运行,可以达到8%的发电效率;当膨胀机进口的状态为饱和或者过热时,系统的热效率与发电量都会随着进口压力的增加而增加;系统压力较低的时候,系统的不可逆程度较大,系统效率会有较大损失。
Low-temperature heat steam,as heat source of organic Rankine cycle（ORC）,is used to simulate waste heat,and Organic Rankine Cycle（ORC）power generation system is established.Software of Engineering Equation Solver（EES） is utilized to solve the mathematical modeling of ORC system with refrigerant R134a.Predicted result is compared with experimental result.It is shown that the electricity generation efficiency is 8% with R134a working substance.The thermal efficiency and power rate can increase along with the increase of inlet pressure when inlet condition of expansion machine is saturated or overheated.Moreover,the system＇s irreversible loss is high and system efficiency will reduce greatly when the pressure of system is low.
出处
《制冷学报》
CAS
CSCD
北大核心
2012年第1期18-21,共4页
Journal of Refrigeration
关键词
热工学
有机朗肯循环
热力学分析
废热发电
低品位能源
Pyrology
Organic Rankine Cycle（ORC）
Thermal analysis
Waste heat power generation
Low-Grade Energy
