標題: Orientation effect on heat transfer of a shrouded LED backlight panel with a plate-fin array
作者: Shyu, Jin-Cherng
Hsu, Keng-Wei
Yang, Kai-Shing
Wang, Chi-Chuan
機械工程學系
Department of Mechanical Engineering
關鍵字: Orientation;Clearance;Plate-fin;Natural convection
公開日期: 1-三月-2013
摘要: This study reports thermal performance of a shrouded 348 mmx 558 mm aluminum plate-fin heat sink subject to various input powers and orientations. Effects of clearance (C) and the orientation on the heat transfer of the heat sink were investigated. Results show that the clearance effect is detectable only in a "window region" between 5 mm and 10 mm where an appreciable rise of heat transfer coefficient is encountered. As the tilted angle (theta) of the LED panel is increased, the heat transfer coefficient is reduced and the clearance effect on heat transfer becomes more pronounced. The heat transfer coefficients are similar between two cases in which the tilted angles of the LED panel are supplementary irrespective of clearance and input power. Except the cases of a horizontal heat sink, heat transfer coefficient of the shrouded heat sink having a fin array facing downward is usually slightly higher than that having supplementary tilted angle. (C) 2012 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.icheatmasstransfer.2012.12.006
http://hdl.handle.net/11536/21400
ISSN: 0735-1933
DOI: 10.1016/j.icheatmasstransfer.2012.12.006
期刊: INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume: 42
Issue: 
起始頁: 51
結束頁: 54
顯示於類別:期刊論文


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