横掠单圆管流动与换热的热力学优化设计

Thermodynamic Optimization of Convective Heat Transfer Through Cross-Flow over Single Tube

应用热力学第一、第二定律 ,采用对管外流体温度进行加权平均的方法 ,对选定参数的横掠单圆管流动与换热进行了热力学优化分析。得到了管内 ,管外流体的温度分布图 ,系统的熵产率分布图 ,和一系列优化参数的计算式。

The first and second laws of thermodynamics, combined with the method of weighted mean value of outside fluid temperature, have been utilized to optimize the convective heat transfer of one tube cross-flow heat exchanger. The spatial distributions of the fluid temperature field inside and outside the tube and entropy generation rate profiles are presented. It is shown that the entropy generation rate may be minimized through the proper selection of some system parameters.