化工进展2016，Vol.35Issue(7)：2007-2014,8.DOI:10.16085/j.issn.1000-6613.2016.07.011
有机朗肯循环膨胀机入口过热度实验
Experiment on expander inlet superheat of organic Rankine cycle
摘要
Abstract
This article discusses the effect of expander inlet superheat on the performance of expander and the organic Rankine cycle (ORC) system at fixed heat source. An ORC experimental rig was constructed with scroll expander,and dichlorotrifluoroethane (R123) was selected as the working fluid. At 140℃,experiments were carried out by adjusting the expander torque to control the system evaporation pressure,to regulate the expander inlet superheat. Experimental results showed that the maximum shaft power and actual operating efficiency of the expander were 2.35 kW and 59.7 %, respectively. The maximum net output power,thermal efficiency and exergy efficiency of the ORC system were 1.75 kW,5.3 % and 21.8 %,respectively. Analysis showed that with the expander inlet superheat decreased,the expander mechanical efficiency increased while the expander isentropic efficiency decreased. As the superheat decreased,the shaft power and actual operating efficiency of the expander first increased,then decreased. When the expander inlet superheat was about 20℃,the expander showed the maximum output power,and the ORC system provided the highest net output power,thermal efficiency and exergy efficiency,simultaneously. Besides,expander inlet superheat influenced the exergy destruction distribution of the ORC system. With the expander inlet superheat decreased,the expander exergy destruction first increased and then decreased.关键词
有机朗肯循环/过热度/热效率/㶲效率/㶲损Key words
organic Rankine cycle/superheat/thermal efficiency/exergy efficiency/exergy destruction分类
能源与动力引用本文复制引用
杨绪飞,戚风亮,刘秀龙,邹景煌,徐进良..有机朗肯循环膨胀机入口过热度实验[J].化工进展,2016,35(7):2007-2014,8.基金项目
国家自然科学基金重大国际合作项目（51210011）。 （）
