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Convective Heat Transfer Coefficient and Pressure Drop of Al2O3-Water Nanofluid in a Single-Phase Microchannel for Cooling of High Heat Output Devices

[+] Author Affiliations
Guillermo E. Valencia, Miguel A. Ramos, Antono J. Bula

Universidad del Norte, Barranquilla, Colombia

Paper No. MNHT2008-52243, pp. 755-762; 8 pages
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer, Parts A and B
  • Tainan, Taiwan, June 6–9, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4292-4 | eISBN: 0-7918-3813-7
  • Copyright © 2008 by ASME


The paper describes an experimental procedure performed to obtain the convective heat transfer coefficient of Al2 O3 nanofluid working as cooling fluid under turbulent regimen through arrays of aluminum microchannel heat sink having a diameter of 1.2 mm. Experimental Nusselt number correlation as a function of the volume fractions, Reynolds, Peclet and Prandtl numbers for a constant heat flux boundary condition is presented. The correlation for Nusselt number has a good agreement with experimental data and can be used to predict heat transfer coefficient for this specific nanofluid, water/Al2 O3 . Furthermore, the pressure drop is also analyzed considering the different nanoparticles concentration.

Copyright © 2008 by ASME



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