冷热联供的空气制冷不可逆循环分析  

ANALYSIS OF THE IRREVERSIBLE AIR REFRIGERATION CYCLE WITH COMBINATION OFFERING OF COOL AND HEAT

作　　者：郭中纬[1] 朱瑞琪[1] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《工程热物理学报》2004年第S1期9-12,共4页Journal of Engineering Thermophysics

摘　　要：本文分析了压气机排气余热利用的冷热联供回热空气制冷不可逆循环,并建立了仅忽略系统内所有换热器流动阻力损失的循环工作性能系数(COP)计算方程式。用该方程分析研究了透平膨胀机与压气机等熵效率、压缩机排气余热度、降温比、传热温差、压比等参数对系统COP值的影响,发现膨胀透平等熵效率提高对COP值的贡献远大于压气机效率同样提高的功效;在其它参数确定时,存在最佳压比,可使系统工作性能系数在该条件下达极值。在优化参数配置下,用于空气调节的冷热联供回热空气制冷不可逆循环的COP值可达2左右。In this paper, the analysis of the irreversible air refrigeration cycle with combination offering of cool and heat, which is carried by compressor s exhausted air, is accomplished. The computation formula of coefficient of performance for the irreversible cycle, in which only flow resistance in heat transfers is ignored, is proposed. On the base of the formula, analysis of the influence of isentropic efficiency of turbine and compressor, compression ration, temperature difference in heat transfer, ratio of ...

关 键 词：空气透平 供冷站 供热 不可逆过程热力学 

分 类 号：TB61[一般工业技术—制冷工程]