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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1143Analytical Technique for Estimating the...

Analytical Technique for Estimating the Termophysical Properties of Hybrid Nanofluids

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Abstract:

Over the past years, the development of functional heat transfer fluids by compounding different substances or different phases of matter (solid, liquid, or gas) has raised increasing interest in view of their potential applications in technologies. In particular, the nanofluids in which the solid particles (<100 nm or smaller) are incorporated as the dispersed phase in the suspensions, are currently focus of great attention because of their perspective potentials as high-performance heat transfer fluids. The potential advantage of utilizing the nanofluid lies mainly in its drastic increase in the thermal conductivity. This paper presents a study of the thermophysical characteristics of some nanofluids and their hybrids. General correlations for the effective thermal conductivity and viscosity of nanofluids are used for this analysis. Regarding the importance of thermophysical properties of water based drilling fluids, the effects of insertion of two oxides in an alumina-water nanofluid on the thermal conductivity, viscosity and density of distilled water were investigated. According to the results, viscosity and density of the nanofluids increased with the concentration. At high concentrations, the least increase in the viscosity of distilled water by adding the nanomaterials is related to H2 (8.2% increase at 1.0 wt.%). As the results show, increase in the density of distilled water by adding the nanomaterials is insignificant, that in the worst case it did not exceed 0.9%. The least increase in the density of base fluid at high concentrations was for H1.

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Periodical:

Advanced Materials Research (Volume 1143)

Pages:

207-213

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1143.207

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Online since:

February 2017

Authors:

Madalina Georgiana Moldoveanu*, Tudor Mihai Simionescu, Alina Adriana Minea, Adrian Dima

Keywords:

Alumina Nanofluid, Hybrid Nanofluid, Nanofluids, Silica Nanofluid, Titanium Oxide Nanofluid

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* - Corresponding Author

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