LSIパッケージ搭載用薄肉平板フィンの噴流冷却に関する実験的検討

概要

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This paper reports on the impingement cooling characteristics of a heat sink with thin longitudinal fins of 0.2 mm thickness, which are spaced with a fin-pitch of 0.5〜2.0 mm. Air cooling the heat sinks comes from slot-shaped orifices positioned above the heat-sink centers. The gap between the fin tops and the inlet orifice is 0〜10 mm. The thermal resistance of thin longitudinal fins is about 50〜57% of that of the thick longitudinal fins now in commercial use. The cooling performance of thin-plate fins is almost the same as that of optimally arranged pin fins with the same total surface area. A maximum value 6 times the heat transfer rate of a flat plate with the same base area was observed for the thin-plate fins. The performance of impingement cooling systems is almost unaffected by the gap between the fin tops and the inlet orifice (or, for channel cooling, the upper wall). On the other hand, performance of channel-cooling systems decreases markedly with widening of the gap.
一般社団法人日本機械学会の論文
1996-04-25