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Dispersion stability and thermal conductivity of propylene glycol based nanofluids

Witharana, S, Palabiyik, I, Musina, Z and Ding, Y (2011) Dispersion stability and thermal conductivity of propylene glycol based nanofluids. Journal of Nanoparticle Research, 13 (10). pp. 5049-5055. ISSN 1572-896X


The dispersion stability and thermal conductivity of propylene glycol-based nanofluids containing Al2O3 and TiO2 nanoparticles were studied in the temperature range of 20–80 °C. Nanofluids with different concentrations of nanoparticles were formulated by the two-step method and no dispersant was used. In contrast to the common belief, the average particle size of nanofluids was observed to decrease with increasing temperature, and nanofluids showed an excellent stability over the temperature range of interest. Thermal conductivity enhancement for both studied nanofluids was a nonlinear function of concentration and was temperature independent. Theoretical analyses were also performed using existing models compared with experimental results. The model based on the aggregation theory appears to be the best.

Item Type: Article
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Chemical & Process Engineering (Leeds)
Depositing User: Symplectic Publications
Date Deposited: 12 Sep 2011 12:32
Last Modified: 15 Sep 2014 03:53
Published Version: http://dx.doi.org/10.1007/s11051-011-0485-x
Status: Published
Publisher: Springer
Identification Number: 10.1007/s11051-011-0485-x
URI: http://eprints.whiterose.ac.uk/id/eprint/43259

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