OICC Press International Journal of Nano Dimension 2228-5059 11 1 2024 02 07 Thermal and electrical conductivity of Aluminium Nitride nanofluids 10.57647/ EN Chidozie Ezekwem Department of Mechanical Engineering, University of Port Harcourt, Port Harcourt, Nigeria. Ademola Dare Department of Mechanical Engineering, University of Ibadan, Ibadan, Nigeria. Journal Article 2024 02 07 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.