M L R Chaitanya Lahari1, P H V Sesha Talpa Sai2*, K S Narayanaswamy3, K.V. Sharma4
Thermophysical properties of copper and silica nano-particles dispersed in glycerol-water mixture as base liquid are determined experimentally. Cu and SiO2 nanoparticles are mixed in a glycerol-water mixture of 30:70 ratio by volume. Three concentrations of 0.2%, 0.6%, and 1.0% are prepared and ‘k’ , ‘μ’, Cp, and ‘ρ‘are determined in the temperature range of 20oC - 80oC using Brookfield viscometer and TPS500S thermal constants analyzer. Nanofluid viscosity and density increased with particle concentration and decreased with temperature. The ‘k’ of nanofluids increased with temperature and particle concentration. Specific heat, ‘Cp’ of nanofluids reduced with volume concentration and enhanced with temperature. Maximum viscosity is observed for 1.0% Cu and SiO2 nanofluids at 20oC and is 3.615 cP and 4.334 cP respectively against the base liquid viscosity of 3.040 cP at the same temperature.
Published Date: 2021-11-19;