两级复叠低温制冷机组制冷剂的替代  

Research on refrigerants alternative of two-stage cascade refrigeration units

作　　者：张科[1] 周志钢[1] 吴兆林[1] 

机构地区：[1]上海理工大学,上海200093

出　　处：《低温工程》2009年第6期36-40,共5页Cryogenics

基　　金：上海市重点学科资助项目(S30503)

摘　　要：对应用于两级复叠制冷的工质对R22/R13及其替代物R404A/R23的基本物性参数进行了分析对比,针对采用替代制冷剂后制冷系统在设计中需要注意的一些问题进行了探讨。通过实验测试,对复叠制冷系统在采用两种不同工质对后的压比、制冷量及COP等循环性能进行了比较,结果证明,采用R404A/R23作为替代制冷剂是可行的。Thermodynamic properties of R23/R13 were compared with the alternative refrigerants of R404A/R23, and a number of issues in the design of two-stage cascade refrigeration system using alternative refrigerants were discussed. Cycling performances of different refrigerants, such as pressure ratio, cooling capacity, COP were analyzed by experiments. Results show that application of R404A/R23 as alternative refrigerants is acceptable.

关 键 词：两级复叠制冷 制冷剂替代 循环性能 

分 类 号：TB612[一般工业技术—制冷工程]