基于火用分析的内可逆简单空气制冷循环性能优化  

Performance Optimization of an Endoreversible Simple Air Refrigeration Cycle with Constant-temperature Heat Reservoirs Based on the Exergetic Analysis

作　　者：屠友明[1] 陈林根[1] 孙丰瑞[1] 

机构地区：[1]海军工程大学动力工程系,武汉430033

出　　处：《制冷》2005年第4期5-11,共7页Refrigeration

基　　金：教育部新世纪优秀人才支持计划项目;全国优秀博士学位论文作者专项奖金资助项目(200136)

摘　　要：基于火用分析的观点,运用有限时间热力学方法分析恒温热源内可逆简单空气制冷循环的特性,导出制冷率、生态学目标函数和火用效率与压缩机压比等主要影响参数的解析式,以相应的数值计算分析压缩机压比、高低温侧换热器热导率分配对循环性能优化的影响特点,并把生态学优化目标、火用效率优化目标和传统的制冷率优化目标进行综合比较。所得结果对工程制冷系统设计具有一定的指导意义。On the basis of the exergetic analysis, the performance analysis of an endoreversible simple air refrigeration cycle with constant - temperature heat reservoirs is carried out by using finite - time thermodynamic method in this paper. The expressions of the cooling load, the ecological function and the exergetic efficiency of the refrigeration cycle are derived.The influences of the pressure ratio of the compressor and the allocation of heat exchanger inventory on the optimal performance of the cycle are investigated by detailed numerical examples. Moreover, performance comparisons among the ecological optimization objective, exergetic efficiency optimization objective and traditional cooling load optimization objective are performed. The results obtained may provide guidance for the design of practice air refrigeration plants.

关 键 词：内可逆简单空气制冷循环 制冷率 生忿学目标函数 炯效率 优化 

分 类 号：TB61[一般工业技术—制冷工程]