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Abstract

The openings of refrigerator machine room play an important role in enhancing the heat dissipating performance of the refrigerator compressor. In this study, the compressor housing temperature, the ambient temperature of the compressor and the rotating speed of the fan were measured through experiments. The convective heat transfer coefficient on the compressor housing was then numerically optimized considering various opening shapes. The results show that the convective heat transfer coefficient of the optimized openings increased by about 7 W/m2oC compared to the completely enclosed machine room. Such enhanced convective heat transfer coefficient can contribute to lower superheat of the compressor by efficiently dissipating the internal heat of the compressor.