Mixed refrigerant composition shift due to throttle valves opening in auto cascade refrigeration system

Xiongwen Xu; Jinping Liu; Le Cao

doi:10.1016/j.cjche.2013.06.001

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Mixed refrigerant composition shift due to throttle valves opening in auto cascade refrigeration system

化工热力学 | Updated：2026-01-06

- Mixed refrigerant composition shift due to throttle valves opening in auto cascade refrigeration system
- Chinese Journal of Chemical Engineering Vol. 23, Issue 1, Pages: 199-204(2015)
- Affiliations：
  
  1. 2 Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization,Guangzhou,China,510640
  2. 3 State Key Laboratory of Subtropical Building Science, South China University of Technology,Guangzhou,China,510640
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2013.06.001
  CLC：
- Published：2015
- Accepted：
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Xiongwen Xu, Jinping Liu, Le Cao . Mixed refrigerant composition shift due to throttle valves opening in auto cascade refrigeration system[J]. Chin.J.Chem.Eng., 2015, 23(1): 199-204.
DOI：

Xiongwen Xu, Jinping Liu, Le Cao . Mixed refrigerant composition shift due to throttle valves opening in auto cascade refrigeration system[J]. Chin.J.Chem.Eng., 2015, 23(1): 199-204. DOI： 10.1016/j.cjche.2013.06.001.

摘要

Abstract

Auto cascade refrigeration (ACR) cyclewith phase separators is widely used in the cryogenic system. The composition of mixed refrigerant has a great effect on the performance of the system. Based on the assumption of infinite volume of phase separator

ACR systemwith one phase separator is simulated in this paper. The variation of refrigerant composition under different valves opening is obtained. A related experimental systemis set up to verify the variation. The result shows that when the valve opening connected to the evaporator increases or the valve opening under the phase separator decreases

the low-boiling component concentration of the working mixture passing through the compressor and condenser increases

while the high-boiling component concentration decreases. Furthermore

the variations of condensation pressure and evaporation pressure under different valves opening are also observed. This paper is helpful to deepen the understanding of ACR system.

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