R1234yf与R134a在汽车空调用电动压缩机中的替代性研究  

Substitution of R1234yf and R134a in Electric Compressors for Automotive Air-Conditioners

作　　者：杨兆锋 谷荀 李晨浩 杨贤飞 陈星雨 罗宗鑫 

机构地区：[1]威凯检测技术有限公司,广州510700

出　　处：《日用电器》2024年第11期131-134,139,共5页ELECTRICAL APPLIANCES

摘　　要：为研究使用R1234yf和R134a制冷剂时压缩机制冷性能随转速变化的趋势与差异,验证在电动压缩机领域用R1234yf替代R134a制冷剂的可行性,本文使用基于第二制冷剂量热器法设计的电动压缩机性能试验系统,测试了在两种工况下分别使用R1234yf和R134a制冷剂时汽车空调用电动压缩机在5 500、6 000和6 500 rpm转速下的性能表现,并比对其试验结果。数据表明,在(5 500~6 500)rpm转速范围内,使用R1234yf和R134a时COP均随转速升高而下降,但使用R1234yf时下降比例更低;使用R134a时制冷量、COP均大于使用R1234yf时,随转速升高二者差值趋向减小。此外,使用R1234yf时排气温度低于使用R134a时,且温度上升趋势相对平缓。In order to study the trend and difference of compressor cooling performance with rotational speed when using R1234yf and R134a refrigerants,and toverify the feasibility of replacing R134a refrigerant with R1234yf in the field of electric compressors,this paper uses an electric compressor test systembased on the second refrigerant calo-rimeter method to test the performance of electric compressors using R1234yf and R134a refrigerants at 5500,6000 and 6500 rpmrespectively under twotest conditions,and the results are compared.The data indicate that,within the(5500~6500)rpmrange,the coefficient of performance(COP)for both refrigerants decreases with increasing speed,but the decline is less pronounced when using R1234yf.The cooling capacity and COP are higher when using R134a,with the differences between the tworefrigerants decreasing as speed increases.Additionally,the exhaust temperature is lower when using R1234yf compared toR134a,and the temperature increase is more gradual.

关 键 词：变频压缩机 汽车空调 制冷性能 R1234yf 

分 类 号：U463.851[机械工程—车辆工程]