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Hybrid nanoparticles effects on rheological behavior of water-EG coolant under different temperatures: An experimental study

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Abstract In this paper, an experimental study has been conducted on the rheological behavior of water-EG coolant in presence of MgO-MWCNTs hybrid nanomaterials. For this purpose, nanofluid samples were prepared… Click to show full abstract

Abstract In this paper, an experimental study has been conducted on the rheological behavior of water-EG coolant in presence of MgO-MWCNTs hybrid nanomaterials. For this purpose, nanofluid samples were prepared by suspending the nanomaterials in a mixture of water and EG with solid volume fractions of 0.025%, 0.05%, 0.1%, 0.2%, 0.4%, 0.6% and 0.8%. Viscosity measurements were performed at various shear rates and in the temperatures (25–60 °C). Experimental data showed that all hybrid nanofluid samples had Newtonian behavior. Results showed that nanofluid viscosity decreased with increasing temperature and augmented with increasing the volume fraction. Moreover, a comparison between the experimental results of this study and those of other studies showed that the viscosity ratio in the current study is higher than other studies. Eventually, a new accurate correlation was developed to assist the calculation of the viscosity of the MgO-MWCNTs/water-EG at different temperatures and volume fractions.

Keywords: behavior water; experimental study; water; water coolant; study; rheological behavior

Journal Title: Journal of Molecular Liquids
Year Published: 2017

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