摘要
以热力学第二定律为基础，对换热器的４种火用效率进行了分析，讨论了冷热流体热容量率比Ｒ、传热单元数Ｎｔｕ和换热流型对换热器各种火用效率的影响。本文结果为工程上各种换热器的热力学性能分析和评价提供参考。
Based on the second law of thermodynamics, the four kinds of exergy efficiency of heat exchangers are analysed and the effects of heat capacity ratio of fluids( R ), heat transfer units number( N tu ) and flow pattern on the exergy efficiency are discussed. The results in this paper provide the reference for the analysis and evaluation of the thermodynamic performance of heat exchangers.
出处
《电站系统工程》
1998年第4期8-10,30,共4页
Power System Engineering
关键词
换热器
YONG效率
分析
heat exchanger
exergy efficiency
analysis
