逆布雷顿循环空气制冷机的性能分析  

Performance analysis of reverse-Brayton air refrigerator

作　　者：孙郁[1] 侯予[1] 赵红利[1] 陈纯正[1] 

机构地区：[1]西安交通大学制冷与低温工程研究所,西安710049

出　　处：《低温工程》2006年第1期27-30,39,共5页Cryogenics

基　　金：国家自然科学基金(50206015);国防科学技术工业委员会民用航天预研技术发展基金资助项目

摘　　要：针对开式逆布雷顿循环空气制冷机的热力性能展开理论分析,建立压缩机、膨胀机和回热器3大部件的制冷机系统模型。就部件性能和流程选择、环境温度、制冷温度等系统参数以及压比等设计参数对空气制冷机性能和COP值的影响进行了研究,证明存在着一个最佳的压力比πopt^4使制冷系统的制冷系数最大。提出了进一步提高制冷机效率的改进方案,对系统参数和设计参数进行了优化设计。Theoretical analysis of the thermal performance oi opening reverse-Brayton air refrigerator has been performed. A model of refrigerator system consisting of compressor, expander and exchanger has been set up. Analysis of the effect of system parameter including performance of compressor, expander and exchanger, the selection of system flow, ambient temperature, refrigeration temperature and design parameter of pressure ratio on the performance of the refrigerator and the COP of the system has been studied under the general engineering working condition. According to the research, there is an optional pressure ratio πopt- 4 assuring the maximal refrigeration coefficient. The improved scheme is advanced to increase the efficiency of the refrigerator. The system parameter and design parameter are optimized.

关 键 词：逆布雷顿循环 空气制冷机 性能优化 

分 类 号：TB651[一般工业技术—制冷工程]