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跨临界CO₂系统用膨胀机的开发与模型分析

Development and Model Analysis of an Expander for Transcritical CO₂ System

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【Author】 YANG Jun~1,LU Ping~1,CHEN Jiang-ping~1,CHEN Zhi-jiu~1,ZHANG Li~2,SHI Yang-juan~2(1.School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China; 2.R&D Centre,Shanghai Hitachi Electrical Appliances Company Ltd.,Shanghai 201206,China)

【机构】上海交通大学机械与动力工程学院；上海日立电器有限公司研发中心；上海日立电器有限公司研发中心上海200240；上海200240；上海201206；

【摘要】为了提高跨临界CO2循环系统的效率,提出了一种不需要吸气控制阀的新型CO2系统用的双滚动转子式膨胀机机构.通过建立相应数学模型,对CO2制冷剂在该膨胀机内部的膨胀过程及主要部件受力状况进行了分析,为该新型膨胀机的后续开发研制提供基础.更多还原

【Abstract】 In order to improve the efficiency of the transcritical CO₂ system,a new two-cylinder rolling piston expander without inlet control valve was proposed.By developing a mathematical model of this kind of expander,the expansion process of CO₂ refrigerant inside the expander and the forces acting on main components were analyzed,which provides important guidance for the further development of this kind of expander.更多还原