化工进展2018，Vol.37Issue(1)：88-95,8.DOI:10.16085/j.issn.1000-6613.2017-0487
有机朗肯循环发电系统变工况运行的实验研究
Experimental study of organic Rankine cycle power generation system under various operating conditions
摘要
Abstract
Due to the instability of waste heat resource and environment temperature,the organic Rankine cycle(ORC)system should have strong various operating ability in practical application. In this paper,the experimental test of an organic Rankine cycle(ORC) system with R245fa as the working fluid under various operating condition were carried out. The effect of cold and heat sources temperature on ORC system performance were analyzed under the constant electric energy production operating. It was found that the decreased heat resource temperature would decrease the inlet temperature and superheat of expander. Because the expander internal leakage was increased,the expander isentropic efficiency was decreased,and the mass flow rate of the working fluid had to increase to maintain the constant output power. With the falling temperature of heat source,the heat transfer coefficient of evaporator and the electrical efficiency were increased. When the inlet temperature of cooling water was kept at 10℃,the electrical efficiency of ORC system was increased from 5.03%to 5.25% with decreasing heat resource temperature from 115℃ to 100℃. Therefore,the temperature of cold source significantly affected the pressure at expander inlet and outlet. With the inlet temperature of cooling water decreased,the expander isentropic efficiency was decreased,whereas the pressure ratio of the expander as well as the power output capability of unit mass of working fluid were increased. Hence,the electrical efficiency and pure efficiency of the system were increased. When the inlet temperature of cooling water was increased from 10℃ to 30℃ at the hot source temperature of 115℃,the electrical efficiency of ORC system was decreased from 7.01% to 6.08%.关键词
有机朗肯循环/冷热源/变工况/实验验证/(拥)Key words
organic Rankine cycle/cold and heat sources/various operating conditions/experimental validation/exergy分类
能源科技引用本文复制引用
曹泷,刘秀龙,张鸣,徐进良..有机朗肯循环发电系统变工况运行的实验研究[J].化工进展,2018,37(1):88-95,8.基金项目
国家自然科学基金国际合作与交流资助项目(51210011)及中央高校基本科研业务费专项项目(2016XS23). （51210011）
