高発熱LSIパッケージに搭載するヒートシンクの噴流冷却特性 : 取付けネジ,噴流方式の影響(熱工学,内燃機関,動力など)

抄録

We investigated the characteristic of a heat-sink that was equipped with a high-power-density LSI package to study the influence of the heat-sink screws and flow-system of impinging air. Using the same volumetric flow rate, the pressure drop and thermal resistance of the heat sink with screws increased 10% and 5%, respectively, in comparison with the values obtained for the heat-sink without screws. Also, the pressure drop and thermal resistance of the heat sink with side impingement decreased 50% and 5-7%, respectively, in comparison with the values obtained for right-over impingement. In the side impingement, we obtained the same thermal resistance for the heat-sinks in changing the orifice width from 20 mm to 40 mm at the same pumping power about 1 W.