Performance of Automotive Ultra-Low Temperature Economized Vapor Injection Heat Pump Air Conditioning Using R1234yf Refrigerant

被引：0

作者：

Liu Y. ^{[1
]}

Li W. ^{[1
]}

Zhang L. ^{[2
]}

Shi J. ^{[1
]}

Chen J. ^{[1
]}

机构：

[1] Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai

[2] Jiangsu Z-Park Energy Conservation and Environmental Protection Research Co., Ltd., Changzhou

来源：

Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University | 2020年 / 54卷 / 10期

关键词：

Economized vapor injection (EVI) technology; Electric vehicle; Heat pump; R1234yf refrigerant;

D O I：

10.16183/j.cnki.jsjtu.2019.244

中图分类号：

学科分类号：

摘要：

In this paper, an automotive ultra-low temperature heat pump air conditioning system based on the economized vapor injection (EVI) technology is proposed. The new low-global warming potential (GWP) R1234yf is used as the refrigerant. Besides, the comparative performance test in R134a and system optimization are conducted. In the ultra-low temperature environment of -20℃, the heating performance and coefficient of performance (COP) of this system can reach 2 kW and 2. 0, which is 30% and 14% higher than those of the traditional heat pump. Thus, the system can meet the heating requirements of crew cabin in a low temperature environment. The heating capacity of the R1234yf system is a little bit lower but pretty much the same as R134a. Moreover, the effect of EVI for R1234yf refrigerant is better than that of R134a. Increasing the inner-condenser area and optimizing components, such as outdoor heat exchanger and compressor, can significantly improve heat pump air conditioning system performance and its energy efficiency. © 2020, Shanghai Jiao Tong University Press. All right reserved.

引用

页码：1108 / 1116

页数：8

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