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Influence of nanoparticle concentration on thermo-physical properties of CuO-propylene glycol nanofluids.

Influence of nanoparticle concentration on thermo-physical properties of CuO-propylene glycol nanofluids.

Journal of nanoscience and nanotechnology (2014-04-18)

Kuppusamy Swaminathan Suganthi, Anju K Radhakrishnan, Natarajan Anusha, Kalpoondi Sekar Rajan

ABSTRACT

Experiments were performed on the preparation and characterization of CuO-propylene glycol nanofluids. The influence of nanoparticle concentration and temperature on nanofluid viscosity reveals existence of a range of nanoparticle concentration and temperature in which the viscosity of nanofluid is lower than that of propylene glycol, possibly due to interactions between nanoparticles and propylene glycol. A temperature-independent, thermal conductivity enhancement of 38% was obtained for nanoparticle concentration of 1.5 vol% over a temperature range of 10-60 degrees C. We believe that particle clustering contributes to the thermal conductivity enhancement in CuO-propylene glycol nanofluids.

MATERIALS

Product Number

Brand

Product Description

Sigma-Aldrich

Copper, powder (dendritic), <45 μm, 99.7% trace metals basis

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Supelco

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Copper, tube, 1000mm, outside diameter 0.25mm, inside diameter 0.05mm, wall thickness 0.1mm, as drawn, 99.9%

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