Browse > Article
http://dx.doi.org/10.14775/ksmpe.2017.16.2.0142

Natural Cooling Characteristics of a Heat Sink for LED Headlight used in Passenger Cars  

Yoo, Jae-Young (Hyundai Motor Company, Gwangju service Center)
Park, Seul-Hyun (School of Mechanical System & Automotive Engineering, Chosun University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.16, no.2, 2017 , pp. 142-148 More about this Journal
Abstract
The objective of this study is to investigate the cooling characteristics of a heat sink for an LED headlight used in passenger cars. To this end, this study conducts the experimental and numerical analysis of the heat sink heated at constant heat fluxes without air flow applied. In the experiments, heat was transferred at a constant heat flux through the bottom of a heat sink. The measured temperature on pre-selected locations of the heat sink was in good agreement with the numerically predicted one. The experimental and numerical results indicate that the convective heat transfer coefficient for the natural convection mode was decreased by increasing the heat flux applied to the bottom of heat sink, lowering the cooling capabilities.
Keywords
Heatsink; Natural Cooling; LED Headlight; Heat Trnasfer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Jeong, H. R,. Kim, J. J., Song, Y. H. "Degradation Analysis of Tungsten filament in Automotive Halogen Lamp," KSME Spring & Fall Conferences, 2143-2148 (2010).
2 Road Traffic Authority Traffic Safety 종합정보지 NO. 422, 31, (2015).
3 Kang, B. D., Lee, H. S., Kim, J. G., "A Study on the Possibility of Applications of LED Headlamp," KSAE Symposium, 177-183 (2006).
4 Lee, H. S., Kang, B. D., Kim, H. G., Choi, Y. T., Hwang, J. Y., "A Study on Optimum Swivel Angle of AFLS Headlamps Considering Various Road Curvatures," KSAE Spring & Fall Conferences 1434-1439 (2006).
5 Kim, D. H. "Study of Optimized Tuning in Full AFLS Head Lamps" Proceedings of the FISITA 2012 World Automotive Congress, 196, pp. 1719-1731 (2012).
6 Jung, T. S., Kang, H. K., "Investigation of Natural Convective Heat Flow Characteristics of Heat Sink," Transactions of the Korean Society of Mechanical Engineers - B, 37.1 27-33 (2013).   DOI
7 Lee, J.S., Jang, H. S., Park, D. K., Hong, H. L. "Heat Analysis for Heat Sink of LED Lamp Using Cooling System," KSPE Conferences, 669-670 (2012).
8 Jung, H. H. "A Study on the Numerical Analysis of Heat Sink for Radiant Heat of Automotive LED Head Lamp" Master Thesis, Chosun University (2011).
9 Incropera, F. P., De Witt, D. P., "Introduction to Heat Transer.," 4th Edition., Wiley, pp. 673-667 (2002).
10 Lai, Y., Cordero, N. C., Barthel, F., Tebbe F. R., Kuhn, J., Apfelbeck, R. "Liquid cooling of bright LED's for automotive application," Applied Thermal Enginering, (2009).