Article

Numerical Investigation of convective heat transfer in pin fin type heat sink used for LED application by using CFD

Author(s):

Prakash D Chavan, PDA COLLEGE OF ENGINEERING KALABURGI; Dr. C. H. Biradar ,PDACE KALABURGI

Keywords

Light emitting diode (LED) ,FLUENT and GAMBIT,HEAT SINKS

Abstract

An analysis of the effect of orientation on the heat transfer in a scaled model pin fin heat sink utilized in Light Emitting Diode (LED) lighting has been carried out using numerical method. The present study involves natural convective heat transfer that takes place in particular heat sink. A pin fin type heat sink has been studied since they are widely used in LED lighting systems which in turn are facing a lot of thermal challenges when they are integrated with high power lighting system. The numerical study is carried out using ANSYS FLUENT software package. The modeling and meshing has been generated using ANSYS GAMBIT v.2.3.16 module which one later imported into ANSYS FLUENT v.6.3.26 module for analysis. In order to carry out a detailed analysis various parametric studies are conducted for different LED power wattages such as 10 W considering different orientations obtained by changing the angles from 0° to 45° has been carried out. From the results it can be concluded that the dissipation of heat in the heat sink is dependent on the orientation of the heat sink. The particular study will be useful to optimize the heat sink used in the LED lighting system.

Reference

    [1] World consumption of primary energy by energy type and selectedcountry groups,1980-2006, U.S. Department of Energy [2] Qie Shen, Daming Sun ⇑, Ya Xu, Tao Jin and X. Zhao, "Orientation effects on natural convection heat dissipation of rectangular fin heat sinks mounted on LEDs," International Journal of Heat and Mass Transfer , vol. 75, pp. 462-469, 2014. [3] Daeseok Jang, Seung-Jae Park, Se-Jin Yook and K.-S. Lee, "The orientation effect for cylindrical heat sinks with application to LED light bulbs," International Journal of Heat and Mass Transfer , vol. 71, pp. 496-502, 2014. [4] Vítor A.F. Costa and A. M. Lopes, "Improved radial heat sink for led lamp cooling," Applied Thermal Engineering , vol. 70, p. 2014, 131-138. [5] Senol Baskaya, Mecit Sivrioglu and M. Ozek, "Parametric study of natural convection heat transfer from," International Journal of Thermal Science, vol. 39, pp. 797-805, 2000. [6] Daeseok Jang, Seung-Jae Park and K.-S. Lee, "Thermal performance of a PCB channel heat sink for LED light bulbs," International Journal of Heat and Mass Transfer, vol. 89, pp. 1290-1296, 2015. [7] Adam Christensen and S. Graham, "Thermal effects in packaging high power light emitting diode arrays," Applied Thermal Engineering, vol. 29, pp. 364-371, 2009.

Other Details

Paper ID: GRDJEV01I080018
Published in: Volume : 1, Issue : 8
Publication Date: 2016-08-01
Page(s): 8 - 18

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