Experimental and Theoretical Investigation of the Thermophysical Properties of Cobalt Oxide (CoO) in Distilled Water (DW), Ethylene Glycol (EG), and DW-EG Mixture Nanofluids.

Solid particles scattered in a base fluid for a standard no larger than 100 nm, constituting a nanofluid, can be used to improve thermophysical characteristics compared to the base fluid. In this study, theoretical and experimental investigations were carried out to estimate the density, viscosity, and effective thermal conductivity of CoO in distilled water (DW), ethylene glycol (EG), and DW-EG mixture nanofluids. CoO nanoparticles with diameters of 50 nm were dispersed in different base fluids (i.