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Evaluation of Spreading Thermal Resistance in Symmetrical Four-Heat Generating Electronic Components  

Kim Yun-Ho (Department of Mechanical & Information Engineering, University of Seoul)
Kim Seo-Young (Thermal/Flow Control Research Center, Korea Institute of Science and Technology)
Rhee Gwang-Hoon (Department of Mechanical & Information Engineering, University of Seoul)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.8, 2006 , pp. 664-671 More about this Journal
Abstract
We propose the correlation to predict the spreading thermal resistance on a plate with symmetrical four heat sources. The correlation transforms four heat sources to a single equivalent heat source and then the spreading thermal resistance can be obtained with the existing equation for a single heat source. When the four heat sources are mounted on a square base plate, the correlation is expressed as a function of the heat source size, the length of base plate, the plate thermal conductivity and the distance between heat sources. Compared to the results of three-dimensional numerical analysis, the spreading thermal resistance by the proposed correlation is in good agreement within 10 percent accuracy.
Keywords
Spreading thermal resistance; Correlation; Geometric equivalence; Multi-heat sources; Numerical analysis;
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