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CPU 냉각을 위한 홴-발포알루미늄 방열기 조합의 열전달 특성
김서영,이명호,백진욱,이관수,Kim, Seo-Yeong,Lee, Myeong-Ho,Baek, Jin-Uk,Lee, Gwan-Su 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.3
The experiments have been carried out to evaluate the cooling performance of a fan-aluminum foam heat sink assembly in comparison with a conventional CPU cooler. In terms of the dimensionless surface temperature of the heater, the cooling performance of the aluminum foam heat sink is similar to that of the conventional one with much reduced weight. The optimum fin height is found to be strongly dependent on the fin height of the heat sink and flow characteristics of the cooling fan.
충돌제트 열전달에 발포알루미늄 방열기의 높이와 노즐의 크기가 미치는 영향
김서영,백진욱,강병하,Kim, Seo-Yeong,Baek, Jin-Uk,Gang, Byeong-Ha 대한기계학회 2001 大韓機械學會論文集B Vol.25 No.9
An experimental study is carried out for an aluminum foam heat sink attached to an isolated heat source to evaluate high potential of aluminum foam as a heat sink with impinging jets. The effects of the pore density and the height of the aluminum foam heat sink, the jet Reynolds number, and the nozzle diameter are delineated in comparison with a conventional pin type heat sink. It is found that the aluminum foam with small pores is inefficient for the heat transfer enhancement due to the large flow friction at the given porosity. In the parameter ranges of the present study, the change in the nozzle diameter shows no significant effects on the surface temperature of the aluminum foam heat sink at a given Reynolds number. The heat transfer enhancement is strongly dependent on the jet Reynolds number and shows a maximum value at a moderate Reynolds number.