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Heat Pipe Performance Enhancement for Microelectronics Cooling

[+] Author Affiliations
C. Buffone, K. Sefiane

University of Edinburgh, Edinburgh, UK

L. Buffone

Università degli Studi della Calabria, Cosenza, Italy

S. Lin

Thermacore Europe, Ltd., Northumberland, UK

M. Bradley

Praxair Surface Technologies, Warwickshire, UK

Paper No. ICMM2003-1097, pp. 747-752; 6 pages
  • ASME 2003 1st International Conference on Microchannels and Minichannels
  • 1st International Conference on Microchannels and Minichannels
  • Rochester, New York, USA, April 24–25, 2003
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-3667-3
  • Copyright © 2003 by ASME


The heat dissipated by convection from the fins of the heat pipe condenser section is strongly limited by the thermal barrier of the oxide layer formed on their aluminum surface. A lot of work has been done to enhance the heat transfer coefficient of this heat pipe section by changing the fins roughness. The present experimental study demonstrates the enhancement in heat transfer coefficient by applying a more conductive coating on the condenser fins surface. A comparison between a conventional technique consisting of applying a rougher surface and this new technique is performed. Results clearly show the performance of the heat pipe exhibits a better enhancement in the case of a more conductive coating than a rougher one. The orientation of the heat pipe is also investigated to demonstrate the effect of gravity on the enhancement so observed. Hydrodynamics inside the heat pipe is considered to explain the findings.

Copyright © 2003 by ASME



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