thermal and electrical conductivity of aluminium nitride nanofluids

This study was designed to experimentally measure the thermal and electrical conductivities of aluminium nitride/ethylene glycol (aln/eg) nanofluids. transmission electron microscopy (tem) was used to characterize the shape of aln nanoparticles. nanofluids with different particle volume concentrations of 0.5%, 1%, 2%, 3%, 4%, and 5% were utilized. the thermal and electrical conductivities of the nanofluids were measured using a kd2-pro thermal analyser and electrical conductivity meter, respectively. the obtained results revealed that the thermal conductivity of the nanofluids increased at the higher volume concentration of the nanoparticles. thus, at 5% volume concentration, the maximum thermal conductivity enhancement of 25% was obtained. the addition of aln nanoparticles to the eg base fluid resulted in a significant increase in the electrical conductivity of the nanofluid. an enhancement in the electrical conductivity of approximately 520 times relative to the base fluid was attained by loading a 0.5% volume concentration of aln in eg at 28°c.