给定边界条件下定常态制冷循环的最优化

OPTIMIZATION OF STEADY FLOW REFRIGERATION CYCLES FOR SPECIFIED BOUNDARV CONDITIONS

给定边界条件下定常态制冷循环的最优化陈林根，孙丰瑞，龚建政，陈文振，赖锡棉（武汉海军工程学院三系，武汉海军工程学院基础部武汉４３００３３）关键词：有限时间热力学，卡诺制冷机，布雷顿制冷机，最优化一、前言实际工程问题主要是在给定的循环型式和运行边界条件...

The finite time thermodynamic performance of steady flow Carnot and Brayton refrigeration cycles is studied for both finite and infinite thermal capacitance rates of heat reservoirs.The fundamental optimal relations of the two cycles are obtained. A comparion of the performance characteristics of the two cycles for the same boundary condition, i.e., the same heat source/sink inlet temperatures, thermal capacitance rates, and heat exchanger conductances,is performed. The effects of finite thermal capacitance rates of working fluid and heat reservoirs, and the internal irreversibilities of the cycles on the performance of the cycles are analysed,and the optimal matching between working fluids and variable-temperature reserviors are discussed.