Investigating the morphology and thermophysical properties of Al₂O₃ and CuO nanofluids

Presently researches on nanofluids are high due to the owing interest and increasing day to day demand. The aim of the present investigation is to examine the size and morphology of nanoparticles using SEM and HRTEM and also calculate the thermophysical properties of alumina/water and CuO/water nanofluids. Nanofluids with weight concentration of 0.02 wt% and 0.05wt% were made using distilled water by adding appropriate amount of nanoparticle and base fluid. Thermophysical properties were measured at different temperatures using different concentration of nanofluids. Addition of nanoparticles in base fluid improves the thermal conductivity at increasing concentrations with temperature rise however, viscosity decreases with temperature increase. (paper)