Numerical Simulations of a Micro-Channel Wall-Tube Condenser for Domestic Refrigerators |
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| Authors: | Huiyong Zhang Junming Li Hongqi Li |
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| Institution: | 1. Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;2. College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | In recent years, microchannel heat exchangers have begun to be used in refrigeration and air conditioning systems. This paper introduces a microchannel condenser for domestic refrigerators with a theoretical model to evaluate its performance. The model was used to obtain the optimal design parameters for different numbers of tubes and tube lengths. The results show that the needed tube height of the downward section decreases with the number of tubes and the tube diameter. Compared with the original condenser, the present optimal design parameters can reduce the total metal mass by 48.6% for the two wall two side design and by 26% for the two wall one side design. Thus, the present condenser is much better than the condensers usually used in actual domestic refrigerators. |
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