蒸汽压缩制冷循环的有限时间热力学分析

FINITE TIME THERMODYNAMIC ANALYSIS OF VAPOR-COMPRESSION REFRIGERATION CYCLE

本文运用有限时间热力学概念分析蒸汽压缩制冷循环,在制冷率给定的前提下,得到了蒸发器和冷凝器的最佳传热温差。典型计算的结果与工程实际符合良好。根据有限时间热力学概念所提出的方法比经典的热力学分析方法更接近实际。文中提供的最佳温差图线可供工程设计参考。

This paper uses the concept of finite time thermodynamics to analyses the vapor-compression refrigeration cycle, and presents the optimum temperature difference of heat transfer in the evaporator and the condensor for the given rate of refrigeration. Some typical calculations show that the results of calcula- tion are in reasonable agreement with those used iu the engineering practice. The suggested method is closer to reality than the classical thermodynamic method. The figures of optimum temperature difference shown in the paper are of referential value to engineering design.