Paper Title:
Performance Investigation on Porous Micro Heat Sink for Cooling of High Power LEDs
  Abstract

A novel porous micro heat sink system is presented for thermal management of high power LEDs, which has high heat transport capability. Numerical model for the micro heat sink is developed to describe liquid flow and heat transfer based on the local thermal equilibrium of porous media, and it is solved with SIMPLE algorithm. The numerical results show that the heated surface temperature of porous micro heat sink is low at high heat fluxes and is much less than the bearable temperature level of LED chips. The heat transfer coefficient of heat sink is very high, and increasing the liquid velocity can enhance the average heat transfer coefficient. The overall pressure loss of heat sink system increases with the increasing the inlet velocity, but the overall pressure drop is much less than the pumping pressure provided by micro pump.

  Info
Periodical
Advanced Materials Research (Volumes 204-210)
Edited by
Helen Zhang, Gang Shen and David Jin
Pages
1481-1484
DOI
10.4028/www.scientific.net/AMR.204-210.1481
Citation
Z. M. Wan, Z. K. Tu, J. Liu, "Performance Investigation on Porous Micro Heat Sink for Cooling of High Power LEDs", Advanced Materials Research, Vols. 204-210, pp. 1481-1484, 2011
Online since
February 2011
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Price
$32.00
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