Experimental Study on Heating Performance of an R1234yf Heat Pump System for Electric Cars

被引：16
|
作者：
Zou, Huiming [1 ,2 ]
Huang, Guangyan [1 ,2 ,3 ]
Shao, Shuangquan [1 ,2 ]
Zhang, Xiaoqiang [1 ,2 ,4 ]
Tian, Changqing [1 ,2 ]
Zhang, Xuelai [4 ]
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Thermal Sci & Technol, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Shanghai Maritime Univ, Shanghai 201306, Peoples R China
来源：
PROCEEDINGS OF THE 9TH INTERNATIONAL CONFERENCE ON APPLIED ENERGY | 2017年 / 142卷
关键词：
Electric Vehicle; Heat pump; R1234yf; DROP-IN REPLACEMENT;
D O I：
10.1016/j.egypro.2017.12.348
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
An R1234yf heat pump system with a secondary fluid circle is designed to lower the risk of high voltage power for supplement heating of electric cars. Heating performance of the test system affected by the expander valve opening and working conditions is investigated. Increasing EXV opening can benefit for heating performance to some degree: COP increases from 3.08 to 4.44 at 3000RPM and 2.38 to 2.72 at 5000RPM; compressor isentropic efficiency increases from 0.951 to 0.974 at 3000RPM and 0.945 to 0.954 at 5000RPM. The experimental results show that heating capacity of the R1234yf heat pump system reduces around 37.2% from 3577W to 2246W with the deceasing of ambient temperature from 0 degrees C to -10 degrees C at 5000RPM. It is very necessary to optimize the operation mode of heat pump and PTC heater based on the comprehensive efficiency. (C) 2017 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：1015 / 1021
页数：7
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