K-1833 自然空冷式電子機器筐体からの放熱 : 流体抵抗に対する出口窓の位置と形状の影響(G06-8 熱工学(8) : 体積力対流)(G06 熱工学部門一般講演)

概要

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This paper describes the effects of the outlet vent size and the distance between the outlet vent location and the power heater position on the flow resistance in natural-air-cooled electronic equipment casings. An experiment was carried out using a simple model casing simulated for the practical natural-air-cooled casing which is composed of 4 side walls, a top plate and bottom plate witch has an inlet opening. A power heater to served as a power dissipation unit was placed at its open bottom. An outlet opening was set on one of the side walls. The opening area, the height of the outlet and the heater location were varied. The experimental results were analyzed using the flow resistance coefficient K which was related to the distance between the outlet vent and the power healer position and the heat removal from the outlet vent, and K values were plotted against a pair of Reynolds numbers Re ard the outlet vent porosity β which is defined as the ratio of outlet vent open area to the top surface area of the casing.
一般社団法人日本機械学会の論文
2001-08-22