The heat conduction mechanism in nanofluid suspensions is derived for transient processes attempting to explain experimental results, which reveal an impressive heat transfer enhancement. In particular, the effect of the surface-area-to-volume ratio (specific area) of the suspended nanoparticles on the heat transfer mechanism is explicitly accounted for, and reveals its contribution to the specific solution and results. The present analysis might provide an explanation that settles an apparent conflict between the recent experimental results in nanofluid suspensions and classical theories for estimating the effective thermal conductivity of suspensions that go back more than one century (Maxwell, J.C., 1891, Treatise on Electricity and Magnetism). Nevertheless, other possible explanations have to be accounted for and investigated in more detail prior to reaching a final conclusion on the former explanation.
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Heat Conduction in Nanofluid Suspensions
Peter Vadasz
Peter Vadasz
Professor and Chair
Fellow ASME
Department of Mechanical Engineering,
e-mail: peter.vadasz@nau.edu
Northern Arizona University
, P.O. Box 15600, Flagstaff, AZ 86001
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Peter Vadasz
Professor and Chair
Fellow ASME
Department of Mechanical Engineering,
Northern Arizona University
, P.O. Box 15600, Flagstaff, AZ 86001e-mail: peter.vadasz@nau.edu
J. Heat Transfer. May 2006, 128(5): 465-477 (13 pages)
Published Online: October 7, 2005
Article history
Received:
March 2, 2005
Revised:
October 7, 2005
Citation
Vadasz, P. (October 7, 2005). "Heat Conduction in Nanofluid Suspensions." ASME. J. Heat Transfer. May 2006; 128(5): 465–477. https://doi.org/10.1115/1.2175149
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