Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Natural Cooling Characteristics of a Heat Sink for LED Headlight used in Passenger Cars

승용 전조등 LED 램프의 방열판 자연 냉각특성

  • Yoo, Jae-Young (Hyundai Motor Company, Gwangju service Center) ;
  • Park, Seul-Hyun (School of Mechanical System & Automotive Engineering, Chosun University)
  • 유재용 (현대자동차 광주 서비스 센터) ;
  • 박설현 (조선대학교 기계시스템 미래자동차 공학부)
  • Received : 2017.03.17
  • Accepted : 2017.04.03
  • Published : 2017.04.30
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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.

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References

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