Performance Analysis of Hydrocarbon Mixture to Replace R134a in an Automotive Air Conditioning System

被引:2
作者
Ismail, Wellid [1 ]
Sumeru [1 ]
Azhar, Abdul Aziz [2 ]
Henry, Nasution [2 ]
Abioye, A. M. [3 ]
机构
[1] Politekn Negeri Bandung, Dept Refrigerasi Dan Tata Udara, Bandung, Indonesia
[2] Univ Teknol Malaysia, Fac Mech Engn, Automot Dev Ctr, Skudai 81310, Johor, Malaysia
[3] Univ Teknol Malaysia, Dept Thermodynam & Fluid Mech, Skudai 81310, Kagawa, Malaysia
来源
MECHANICAL AND MATERIALS ENGINEERING | 2014年 / 554卷
关键词
Natural refrigerant; R134a; R436A; Air conditioner; DOMESTIC REFRIGERATORS;
D O I
10.4028/www.scientific.net/AMM.554.444
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
At present, most air conditioners in an automotive use R134a as working fluid. Due to the negative impact on the environment, i.e. global warming, the refrigerant must be replaced by environmental friendly working fluid. Hydrocarbons are natural fluids, no effect on the climate, inexpensive and readily available. The hydrocarbon mixture used in the present study is R436A, composed of R290 (propane) and R600a (isobutane) with a mass ratio of 56/44. The results show that the drop-in substitute from R134a to R436A reduced COP by 4.84, 4.74 and 4.64% for the condenser temperature of 40, 45 and 50 degrees C, respectively. To generate COP improvement on the drop-in substitute, subcooling was carried out, and results show that the COP improvement was 4.42, 5.20 and 6.09% for the condenser temperature of 40, 45 and 50 degrees C, respectively.
引用
收藏
页码:444 / +
页数:2
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