Entropy resistance analyses of a two-stream parallel flow heat exchanger with viscous heating  

作　　者：程雪涛 梁新刚 

机构地区：[1]Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, School of Aerospace, Tsinghua University

出　　处：《Chinese Physics B》2013年第8期361-364,共4页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51106082);the Tsinghua University Initiative Scientific Research Program

摘　　要：Heat exchangers are widely used in industry, and analyses and optimizations of the performance of heat exchangers are important topics. In this paper, we define the concept of entropy resistance based on the entropy generation analyses of a one-dimensional heat transfer process. With this concept, a two-stream parallel flow heat exchanger with viscous heating is analyzed and discussed. It is found that the minimization of entropy resistance always leads to the maximum heat transfer rate for the discussed two-stream parallel flow heat exchanger, while the minimizations of entropy generation rate, entropy generation numbers, and revised entropy generation number do not always.Heat exchangers are widely used in industry, and analyses and optimizations of the performance of heat exchangers are important topics. In this paper, we define the concept of entropy resistance based on the entropy generation analyses of a one-dimensional heat transfer process. With this concept, a two-stream parallel flow heat exchanger with viscous heating is analyzed and discussed. It is found that the minimization of entropy resistance always leads to the maximum heat transfer rate for the discussed two-stream parallel flow heat exchanger, while the minimizations of entropy generation rate, entropy generation numbers, and revised entropy generation number do not always.

关 键 词：entropy generation minimization heat exchanger entropy resistance ANALYSES 

分 类 号：TK172[动力工程及工程热物理—热能工程] TQ051.5[化学工程]