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Effect of Volume Fraction and Temperature on Thermal Conductivity of SiO2 Nanofluids

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Abstract:

Thermal conductivities of two kinds of nanofluids (SiO2-water and SiO2-ethylene glycol) were measured by transient hot-wire method at different volume fraction and temperature. Influences of volume fraction of particles and temperature on thermal conductivities of nanofluids were analyzed. The Experimental results show that thermal conductivities of nanofluids are higher than those of base fluids, and increase with the increase of volume fraction and temperature. When approximately 0.5% volume fraction of SiO2 nanoparticles are added into water and ethylene glycol at the temperature 50°C, the thermal conductivities are enhanced 46.2% and 62.8% respectively.

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Periodical:

Advanced Materials Research (Volumes 306-307)

Pages:

1178-1181

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.306-307.1178

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Online since:

August 2011

Authors:

Bao Jie Zhu, Wei Lin Zhao, Dong Dong Li, Jin Kai Li

Keywords:

SiO2 Nanofluid, Thermal Conductivity (TC), Transient Hot-Wire

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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