农业机械学报2012，Vol.43Issue(5)：27-31,5.DOI:10.6041/j.issn.1000-1298.2012.05.005
基于单螺杆膨胀机的发动机排气余热回收系统
Engine Waste Heat Recovery Based on Single Screw Expander
摘要
Abstract
In order to make better use of waste heat energy from engine exhaust gas, the waste heat recovery system based on organic Rankine cycle (ORC) was presented, a single screw expander was used as the power output device, R245fa was used as working fluid, the concept and calculating method of waste heat recovery utilization rate was introduced. On the basis of engine test results, the effects of working fluid evaporating pressure and engine speed on the ORC system performance were analyzed and discussed, and then the optimal value of working fluid evaporating pressure was selected. According to the research results, when the working fluid evaporating pressure is 3.0 MPa, ORC waste heat recovery system can work properly over the whole range of engine speed, the maximum of net power is 12. 1 kW, the maximum of first law efficiency is 11.27% , the maximum of second law efficiency is 25.8% , the maximum of waste heat recovery utilization rate is 8. 9% , waste heat energy from engine exhaust gas can be recovered effectively.关键词
发动机/余热回收/单螺杆膨胀机/有机朗肯循环/工质蒸发压力Key words
Engine/ Waste heat recovery/ Single screw expander/ Organic Rankine cycle/ Evaporating pressure of working fluid分类
能源科技引用本文复制引用
张红光,刘彬,陈研,杨凯,张健,王东芳..基于单螺杆膨胀机的发动机排气余热回收系统[J].农业机械学报,2012,43(5):27-31,5.基金项目
国家高技术研究发展计划(863计划)资助项目(2009AA05Z206)和国家重点基础研究发展计划(973计划)资助项目(2011CB707202) （863计划）
