Impact of Wire Condenser Surface Area on Thermal performance of Household Refrigerators Using R134a and R600a under Hot Climates Conditions

Soran J. Mohammed

Authors

Soran J. Mohammed Department of Mechanical Power Techniques, Kirkuk Polytechnic College, Northern Technical University, Iraq

Keywords:

Wire & tube condenser, Effect of ambient temperature, Condenser Fins, R-600a, Condenser performance, domestic refrigerator, condenser surface areas, home refrigeration

Abstract

This research is an experimental study that will examine the thermal performance of a domestic refrigerator used three-wire tube condenser setup with varying fin numbers. Under Natural Convection, the efficiency of condensers is calculated. They work with two refrigerants: R134a and R600a. The condensers were tested at ambient temperatures of 20°C, 30°C, and 40°C. The performance of the refrigeration system was evaluated based on refrigeration effect, compressor work, pressure ratio, and compressor COP. The results have demonstrated that the cooling performance of the refrigeration systems decreases and the COP decreases with increasing ambient temperature. There is a higher compressor load and condensing pressure for both refrigerants. Among the condensers, the conventional condenser had the highest COP in all the cases. A larger effective value of k resulted in values and better thermal performance. heat transfer area. R600a showed the best results under moderate ambient conditions, and R134a operated more smoothly at high-temperature conditions. Overall, it is seen that the surface area of the condenser has a considerable effect on the thermal efficiency of the refrigerator in a hot climate.

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