四种双温蒸气压缩制冷循环的制冷性能比较

Journal of Applied Sciences ›› 2006, Vol. 24 ›› Issue (5): 538-542.

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COP Comparison of Refrigeration Cycles with Two-Stage Evaporating Temperatures

LIU Jing-hui, CHEN Jiang-ping, CHEN Zhi-jiu

Refrigeration and Cryogenics Institute, Shanghai Jiaotong University, Shanghai 200030, China

Received:2005-08-25 Revised:2005-11-18 Online:2006-09-30 Published:2006-09-30

Abstract

Abstract: This paper presents a mathematical model for theoretical analysis of refrigeration cycles with two -stage evaporating temperatures, and makes a COP comparison between conventional refrigeration cycle with evaporating pressure adjustment valve and 3 cycles with ejectors.The results show that compression/ejection refrigeration cycles can reduce energy loss and improve COP of refrigeration systems.The more the cooling capacity of the high temperature evaporator, the higher the COP can be improved.

Key words: thermodynamics, COP, compression/ejection refrigeration cycle

CLC Number:

TB61

LIU Jing-hui, CHEN Jiang-ping, CHEN Zhi-jiu. COP Comparison of Refrigeration Cycles with Two-Stage Evaporating Temperatures[J]. Journal of Applied Sciences, 2006, 24(5): 538-542.

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COP Comparison of Refrigeration Cycles with Two-Stage Evaporating Temperatures

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