CO_2循环回热器作用分析  

Analysis of internal heat exchanger in CO_2 cycle

作　　者：王凤坤[1] 范晓伟[1] 张仙平[2] 

机构地区：[1]中原工学院能源与环境学院,郑州450007 [2]东华大学环境科学与工程学院

出　　处：《低温与超导》2007年第5期440-442,450,共4页Cryogenics and Superconductivity

基　　金：河南省高校新世纪优秀人才支持计划项目;河南省科技攻关项目(0524440040)

摘　　要：对CO2循环中回热器的作用进行了热力学分析计算。计算结果表明,对于CO2热泵系统,回热循环制热系数和容积制热量的改善小于6%;对于CO2制冷系统,当冷凝温度低于40℃时,回热循环制冷系数和容积制冷量的改善小于10%,当冷凝温度介于40℃和70℃时,回热循环制冷系数和容积制冷量的改善10—20%。The contribution of internal heat exchanger of CO2 cycle was analyzed in this paper. For CO2 heat pump system, the results indicated that the improvement of COP and volumetric capacity is less than 6%. For CO2 refrigeration system, when the condensation temperature is below 40℃, the improvement of COP and volumetric capacity is less than 10% ; When the condensation temperature is between 40℃ and 70℃, the improvement of COP and volumetric capacity is significant and between 10% and 20%.

关 键 词：CO2 回热器 容积制冷(热)量 COP 

分 类 号：TB651[一般工业技术—制冷工程]