Effect of Temperature on Rheological Properties of Copper Oxide Nanoparticles Dispersed in Propylene Glycol and Water Mixture

Authors: Kulkarni, Devdatta P.; Das, Debendra K.; Patil, Shirish L.

Source: Journal of Nanoscience and Nanotechnology, Volume 7, Number 7, July 2007 , pp. 2318-2322(5)

Publisher: American Scientific Publishers

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Abstract:

This paper reports on experimental investigation of the rheological behavior of copper oxide nanoparticles dispersed in a 60:40 propylene glycol and water mixture. Nanofluids of a particle volume concentration from 0 to 6% have been tested in this study. The experiments were conducted over a temperature range of −35 °C to 50 °C to establish their behavior for use as a heat transfer fluid in cold climates. The experiments reveal that this nanofluid in the range of particle volume percentage tested exhibits a Newtonian behavior. A new exponential correlation has been developed from the experimental data, which expresses the viscosity as a function of particle volume percent and the temperature of the nanofluid. The slope of relative viscosity curve was found to be higher at lower temperatures.

Keywords: RHEOLOGY; VISCOSITY; TEMPERATURE DEPENDENCY; NANOFLUID; PROPYLENE GLYCOL

Document Type: Research article

DOI: 10.1166/jnn.2007.437

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