Comparative analysis of refrigerant performance between LPG and R134a under subtropical climate

被引:1
作者
Ahmad, Rakibul Hossain [1 ]
Bhuiyan, Arafat A. [1 ]
Xu, Fei [2 ]
Sujon, Abu Shaid [1 ]
Karim, Md. Rezwanul [1 ]
Moin, Emran Hossain [1 ]
Sadrul Islam, A. K. M. [1 ]
机构
[1] IUT, Dept Mech & Prod Engn, Dhaka 1704, Bangladesh
[2] Ansys Inc, Elect Business Unit, Austin, TX 78746 USA
关键词
Alternate refrigerants; Liquefied petroleum gas; R134a; Refrigerator performance; Subtropical climate; LIQUEFIED PETROLEUM GAS; ENERGY; REPLACEMENTS; HYDROGEN; SYSTEM; FLOW; CFC;
D O I
10.1007/s10973-019-09126-3
中图分类号
O414.1 [热力学];
学科分类号
摘要
In this investigation, a series of experiments were conducted to explore the effects of liquefied petroleum gas (LPG) mixture of 60% propane and 40% commercial butane as a drop-in auxiliary for refrigerant R134a in a household refrigerator under subtropical conditions in Bangladesh. Experiments were conducted for both continuous and cycling operating conditions with fixed surrounding air temperature of T-amb = 33 +/- 1 degrees C. Three different sets of varying tube length with variable charging level were considered. The experimental outcome determined - 17.5 degrees C as the optimum freezer air temperature with the use of 65 gm LPG and 4 m capillary tube length. A comparative analysis was conducted for R134a against LPG with charge amount. After replacing refrigerant-R134a with LPG, reduction in pull-down time, discharge temperature, and mass flow rate were found about 2.4%, 17.8%, and 20%, respectively. It can be concluded that LPG is a promising substitute to refrigerant R134a in small-scale domestic refrigerators.
引用
收藏
页码:2925 / 2935
页数:11
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