摘要
本文对二氧化碳制冷的亚临界循环和跨临界循环进行了计算分析， 并和Ｒ５０２ 制冷循环进行了比较。指出， 在一定的蒸发温度范围内， 二氧化碳制冷循环的性能接近或优于Ｒ５０２循环。在二氧化碳液化系统中使用二氧化碳制冷循环比使用Ｒ５０２ 制冷循环有较好的经济性。
This paper presents the simulation study and comparison of CO 2 and R502 as refrigerants.At first,as a single stage vapor compression refrigeration cycle′s refrigerant,CO 2 can be used in subcritical and transcritical situations.The performances are studied completely.The results show that CO 2 has the same or better performance compared to R502′s in certain temperature ranges.Finally CO 2 and R502′s performances in a CO 2 liquefying system are discussed in detail.It is promising to use CO 2 as the alternative of R502 in this case,either in performance or in economics.
出处
《制冷》
1999年第4期44-48,49,共6页
Refrigeration
