摘要
本文在热力学第一、第二定律的基础上,建立了顺、逆流间壁式换热器的熵产数表达式,并在已有文献的基础上较为全面地讨论了热容流量比。
Based on the first and second law of thermodynamics, the general expressions for entropy generation of parallel flow and counter folw heat exchanger are derived. The influences of the heat capacity flow ratio, inlet thermodynamic temprature ratio and pressure drop on the entropy generation of heat exchanger are discussed completely.
关键词
换热器
流动阻力
热容流量比
熵
heat exchanger
flow resistance
heat capacity flow ratio
heat transfer unit
entropy generation
