Performance comparison of a refrigerator system using R134a and hydrocarbon refrigerant (HCR134a) with different expansion devices

1st Nommensen International Conference on Technology and Engineering

Aziz, A.^1 ; Izzudin, I.^1 ; Mainil, A.K.^2

Department of Mechanical Engineering, Universitas Riau, Jl.Subrantas km 12, Pekanbaru

28293, Indonesia^1

Department of Mechanical Engineering, Universitas Bengkulu, Jl. WR Supratman, Kandang Limun, Bengkulu

38371A, Indonesia^2

关键词: Alternative refrigerant;    Expansion devices;    Hydrocarbon refrigerants;    Lower pressures;    Performance comparison;    R134a refrigerants;    Refrigeration effect;    Thermostatic expansion valves;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/237/1/012008/pdf
DOI  :  10.1088/1757-899X/237/1/012008

来源: IOP

【 摘 要 】

The objective of this study is to compare the performance of refrigerator system using working fluid between R134a refrigerant and HCR134a as hydrocarbon refrigerant for substitution of R134a. The use of capillary tube (CT) 1.5 m with HCR134a showed that slightly better COP than among the others, due to the lower pressure of condenser, conversely thermostatic expansion valve (TEV) showed that better COP than among the others with R134a. COP of CT 1.25 m and CT 1.5 m using HCR134a increase about 42.89% and 18.09% compared to R134a, where the electric current of refrigerator system decrease about 11.63% and 10.98%. However, the COP of HCR134a with CT 2.7 m and TEV were obtained lower than R134a about 16.2% and 17.06% and the use of electric current is higher than R134a about 12.98% and 16.5%. The use of HCR134a provides a higher refrigeration effect than R134a about 66.71%-88.27% for various types of expansion devices. The results confirmed that HCR134a could be an alternative refrigerant for replacement of R134a refrigerant.