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带气液分离器自动复叠系统中节流阀开度引起的混合工质浓度偏移(英文)
引用本文:许雄文,刘金平,曹乐.带气液分离器自动复叠系统中节流阀开度引起的混合工质浓度偏移(英文)[J].中国化学工程学报,2015,23(1):199-204.
作者姓名:许雄文  刘金平  曹乐
作者单位:1.School of Electric Power, South China University of Technology, Guangzhou 510640, China;2.Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, Guangzhou 510640, China;3.State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
基金项目:Supported by the China Postdoctoral Science Foundation(2014M552195);the State Key Laboratory Foundation of Subtropical Building,South China University of Technology(2013ZC13);the Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization,South China University of Technology(2013A061401005)
摘    要:Auto cascade refrigeration (ACR) cycle with phase separators is widely used in the cryogenic system. The compo-sition of mixed refrigerant has a great effect on the performance of the system. Based on the assumption of infinite volume of phase separator, ACR system with one phase separator is simulated in this paper. The variation of refrigerant composition under different valves opening is obtained. A related experimental system is 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 concentra-tion 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.

关 键 词:Auto  cascade  Refrigeration  Composition  shift  Throttle  
收稿时间:2013-04-02

Mixed refrigerant composition shift due to throttle valves opening in auto cascade refrigeration system
Xiongwen Xu;Jinping Liu;Le Cao.Mixed refrigerant composition shift due to throttle valves opening in auto cascade refrigeration system[J].Chinese Journal of Chemical Engineering,2015,23(1):199-204.
Authors:Xiongwen Xu;Jinping Liu;Le Cao
Affiliation:1.School of Electric Power, South China University of Technology, Guangzhou 510640, China;2.Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, Guangzhou 510640, China;3.State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China
Abstract:Auto cascade refrigeration (ACR) cycle with phase separators is widely used in the cryogenic system. The compo-sition of mixed refrigerant has a great effect on the performance of the system. Based on the assumption of infinite volume of phase separator, ACR system with one phase separator is simulated in this paper. The variation of refrigerant composition under different valves opening is obtained. A related experimental system is 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 concentra-tion 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.
Keywords:Auto cascade  Refrigeration  Composition shift  Throttle
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