自然工质复叠式制冷热泵系统的性能分析  

Analysis on Performance of Natural Refrigerants Cascaded System for Refrigeration and Heating Pump

作　　者：宁静红[1] 李慧宇[1] 彭苗[1] 

机构地区：[1]天津商业大学

出　　处：《上海节能》2009年第7期23-27,共5页Shanghai Energy Saving

摘　　要：介绍了以自然工质CO2为高温循环工质,R290为低温循环工质,同时制冷和供热的CO2/R290复叠式制冷热泵系统,通过对CO2/R290复叠式制冷热泵系统的性能分析,得到了气体冷却器的入口压力和出口温度,复叠式循环的蒸发温度,低温循环的冷凝温度对复叠式制冷热泵系统性能的影响,为今后的CO2/R290复叠式制冷热泵系统的优化设计和开发应用打下了一定的基础。This paper introduces CO2 /R290 cascaded refrigeration and heating pump system that uses natural refrigerants of CO2 as refrigerant for high temperature cycle part and R290 as refrigerant for low temperature cycle part. By analyzing the performance of CO2/R290 cascaded refrigeration and heating pump system, the effects of inlet pressure and outlet temperature of gas cooler, evaporating temperature of cascaded system and condensation temperature of low temperature cycle part on performance of CO2/R290 cascaded refrigeration and heating pump system are obtained, the results present the basis for optimized design and developed application of CO2/R290 cascaded refrigeration and heating pump system.

关 键 词：热工学 性能 自然工质 CO2/R290复叠式系统 制冷和供热 

分 类 号：TB65[一般工业技术—制冷工程]