Abstract: In order to achieve environmental friendliness of refrigerants. Based on the different thermophysical parameters of R1234yf and R134a, the refrigeration performance and system difference of different refrigerant systems of R1234yf and R134a were studied in this paper. The substitutability of ...
Based on the different thermophysical parameters of R1234yf and R134a,the refrigeration performance and system difference of different refrigerant systems of R1234yf and R134a were studied in this paper. The substitutability of R1234yf refrigerant was analyzed,and effective measures were taken to ...
themixedrefrigerantshaveasmalldifferencefrom R134a.Inaddition,sincethemixed refrigerantrequireshigherofthepowerconsumptionofthecompressor,theCCOP valuesofthemixedrefrigerantsystems areslightlylowerthanthatoftheR134asystem,butthedifferenceislessthan7%,whichiswithinanacceptable range.Therefore,theR1234yf/R134amixed...
本实用新型实施例提供的一种R134a或1234yf热泵空调系统,该R134a或1234yf热泵空调系统包括电动压缩机,车外换热器,第一膨胀阀,四通换向带回热器气液分离器和蒸发器. R134a 1234yf one kind or heat pump system, the present invention provides an embodiment of the heat pump system 1234yf or R134a includes ...
使用MH-59方程编制R1234yf的热力性质计算程序。在汽车空调制冷工况下,对比R1234yf和R134a的压力比、排气温度、单位质量压缩功、单位质量制冷量、单位质量冷凝负荷、CO... 孙维栋,张鹏,张昌,... - 《制冷与空调》 被引量: 1发表: 2016年 Energet...
关键词：R1234yf；R134a；GWP；二元混合物；共沸（混合）物；热力学；汽车空调 中图分类号：TB61+1;TB61+2 文献标志码：A 文章编号：0438—1157（2018）06—2396—08 Experimental study on R1234yf/R134a mixture as alternative to R134a in automobile air conditioner MENG Zhaofeng1, ZHANG Hua1, QIN ...
r1234yf热泵技术综述与潜力分析
针对目前家用冰箱所使用的R134 a制冷剂存在消耗臭氧潜能值和全球变暖潜能值高的问题,提出了使用R1234yf及其混合物来代替R134a的设想,从而使家用冰箱更环保更安全.课题组研究了R134a与R1234yf的热物性并得出了混合制冷剂的配比;选用一台BCD-...
6h]3.4h$R134a 系统的COP 比R12342 高0.2h]4.2h。关键词：汽车空调；KULI;R134a;R12342;*0P(性能系数）；回热器 中图分类号：TB61 文献标识码：A 文章编号：1004 -3950(2018)03-0048 -05 Application analysis of refri^^erant R134a and R1234yf in automobile air conditioning system witli ...
关键词:汽车空调,GWP,R1234yf 性能优化,LCCPⅡ 申请上海交通大学博士学位论文 StudyonthePerformanceofAutomotiveAirConditioningSystem!withR1234yfSystemsABSTRACTAtpresenttherefrigerantusedintheautomotiveairconditioningsystemisR134a whichhasahighGWPvalue.RefrigerantR134aisharmfultotheenvironmentandisrestricttouseinthe...