论文摘要
The application of air conditioning heat pump（ACHP） in electric vehicles could lead to significant electrical power saving effect. As for an air conditioning heat pump system for electric vehicles, the influence of refrigerant charge amount should be investigated during the design phase. In this study, experimental method was employed to investigate the influence of the refrigerant charge amount on the performance of the ACHP system. The results showed that the refrigerant charge amount had different influence on the refrigerant properties at various locations within the system. The coefficient of performance and pressure-enthalpy diagram were calculated, and showed a close relationship with refrigerant charge amount under different compressor speeds. The degree of subcooling and the degree of superheating were recorded and the critical charge amount was determined by a typical practical test method. In addition, the critical refrigerant charge amount determined by the experimental method was also compared with two typical void fraction correlation models, and the model with consideration of two phase stream reaction of the refrigerant showed a good estimation accuracy on the critical charge amount.
论文目录
文章来源
类型: 期刊论文
作者: LI Kang,LAN Jiao,ZHOU Guoliang,TANG Qitian,CHENG Qia,FANG Yidong,SU Lin
来源: Journal of Thermal Science 2019年02期
年度: 2019
分类: 工程科技Ⅱ辑
专业: 汽车工业
单位: School of Energy and Power Engineering, University of Shanghai for Science and Technology
基金: supported by The Open Project Program of State Key Laboratory of Fire Science (No. HZ2018-KF03),Shanghai Sailing Program (No. 18YF1417900),Huaqiao University Scientific Research Foundation (No. 16BS801)
分类号: U469.72;U463.851
页码: 294-305
总页数: 12
文件大小: 652K
下载量: 132