一种节能环保型复叠式制冷系统  

An energy-saving and environmental protection cascaded refrigeration system

作　　者：宁静红[1] 马一太[1] 李敏霞[1] 苏维成[1] 

机构地区：[1]天津大学

出　　处：《制冷与空调》2006年第1期48-50,共3页Refrigeration and Air-Conditioning

摘　　要：为解决自然工质R290/CO2复叠式制冷循环COP较低的问题,提出采用过热、过冷和用膨胀机代替节流阀的方法。通过热力学分析对比得出,用膨胀机代替节流阀同时过冷的方法可以大大提高R290/CO2复叠式制冷循环的COP。自然工质R290/CO2复叠式制冷循环替代常规工质有很好的前景。To enhance the COP of R290/CO2 cascaded refrigeration cycle, the idea of using super-cooling, super-heated or replacing throttle by expander is proposed. The COP of R290/ CO2 cascaded refrigeration cycle can be enhanced largely by using expander and super-cooling. It can be concluded that R290/CO2 natural refrigerants cascaded refrigeration cycle to replace conventional R22/R13 cascaded refrigeration cycle has a good future.

关 键 词：复叠式制冷循环 R290/CO2 COP 

分 类 号：TB657[一般工业技术—制冷工程]