EXPERIMENTAL INVESTIGATION OF THE THERMOPHYSICAL PROPERTIES OF TIO2/PROPYLENE GLYCOL–WATER NANOFLUIDS FOR HEAT-TRANSFER APPLICATIONS

Nanofl uids have been prepared by dispersing TiO² nanoparticles in 70:30% (by weight) water–propylene glycol mixture. The thermal conductivity and viscosity were found experimentally at various temperatures with the volume concentrations 0.1–0.8%. The results indicate that the thermal conductivity of the nanofl uids increases with the volume concentration and temperature. Similarly, the viscosity of the nanofl uids increases with the volume concentration but decreases with increase in the temperature. Correlations have been proposed for estimating the thermal conductivity and viscosity of the nanofl uids. The potential heat transfer benefi ts of their use in laminar and turbulent fl ow conditions has been explained.
   
Author:  М. Leena and S. Srinivasan
Keywords:  TiO2 nanofl uids, thermal conductivity enhancement, viscosity, density, volume concentration
Page:  498