ノートブックサイズ電子機器の自然空冷冷却性能評価法の検討(〔熱工学, 内燃機関, 動力など〕)

概要

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A method for predicting the natural convection air cooling performance of notebook size electronic equipment was investigated experimentally and analytically. Experiments were performed on the natural cooling performance for all of the heat dissipation paths in a typical notebook size electronic device. These paths include the surfaces, which are modeled as a flat plate with local and uniform heat sources and a keyboard with a uniform heat source, both open to the atmosphere, and the components inside the housing, which are modeled as a locally heated flat plate in an enclosed space. Total heat dissipation from a flat plate can be calculated from general formulas for radiative and natural convective heat transfer. New formulas were proposed for the convection heat transfer of the keyboard and the locally heated flat plate. An analytical model for predicting the temperature distribution in a notebook-sized device is developed as a combination of thermal-resistance network analysis and the new correlation formulas. As a test, the temperature distribution of an actual personal computer was predicted using this model within an accuracy of 15%.
一般社団法人日本機械学会の論文
1997-12-25