Journal
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume 59, Issue -, Pages 88-100Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2014.10.017
Keywords
Nanofluids; Nanoparticles; Microtube; Heat transfer augmentation; Forced convection
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Forced convective laminar flow of different types of nanofluids such as Al2O3 and SiO2, with a nanoparticle size of 30 nm, and different volume fractions ranging from 0.5% to 1% using water as base fluids were investigated numerically and experimentally. This investigation covers the Reynolds number in the range of 90 to 160. The results have shown that SiO2-water nanofluid has the highest Nusselt number, followed by Al2O3-water, and lastly pure water. The maximum heat transfer enhancement was about 22% when using the nanofluids and the numerical and experimental results agree well with the conventional theory. (C) 2014 Elsevier Ltd. All rights reserved.
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