Experimental Study on the Effect of Tip Clearance for a Straight Fin Heat Sink

팁 클리어런스가 스트레이트 휜 히트싱크의 냉각성능에 미치는 영향에 관한 실험적 연구

In this paper, the effect of tip clearance on the cooling performance of the microchannel heat sink is presented under the fixed pumping power condition. For the various types of microchannel heat sink having different size of fin width and channel width, experimental study is conducted. Through the experiment, the tip clearance effect is investigated by increasing tip clearance from zero. As a result, it is shown that cooling performance of heat sink with tip clearance is better than that of heat sink without tip clearance. For the microchannel heat sink with tip clearance, the optimum conditions for cooling performance is also studied.