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Original Articles

An experimental study to investigate the dynamic behaviour of thermal conductivity for different concentrations of Al2O3 nanofluid

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Pages 1321-1326 | Received 01 Feb 2018, Accepted 20 Jul 2018, Published online: 20 Aug 2018
 

ABSTRACT

Thermal conductivity (k) is an important property of the fluid which contributes to the heat transfer. Presence of nanomaterial enhances the k of the base fluid and can be used as potential heat transfer medium in many industrial, domestic applications. Experimentation to study the effect on k due to nanomaterial addition to the base fluid is carried out. Alumina Oxide (Al2O3) of different concentrations was selected as nanomaterial with water as the base fluid. Results showed that nanofluid with 7.5% Al2O3 gives 22% increase in k as compared to base fluid. Also, it was observed that as nanomaterial % concentration increases, the % decrease in k increases. For test period, water shows a negligible reduction in k; compared to 5.5% decrease in k for 7.5% Al2O3 nanofluid. This study leads to the conclusion that nanofluids are having good k for certain time period; after that replacement of fluid is necessary.

Disclosure statement

No potential conflict of interest was reported by the authors.

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