Effect of different temperatures on AC breakdown voltage of mineral oil based nanofluids

This study seeks to make improvements in the dielectric properties of transformer oil through the application of nanotechnology. In particular, two nanoparticles are examined experimentally: titanium dioxide (TiO2), and barium titanate (BaTiO3). Each has a mean diameter not exceeding 100 nm. The nanofluid samples comprised the nanoparticles mixed into the mineral oil through differing procedures. In the first case, the transformer oil was combined with 0.01% volume fraction of the nanoparticle; the second sample used 0.03% volume fraction of the nanoparticle volume fraction. A magnetic stirrer was then used for sample dispersal before an ultrasonic dispersant method was used on the prepared nanofluids so that sample homogeneity could be assured. The experimental process then recorded the AC breakdown voltage characteristics for the liquids through a range of temperatures from 35°C up to 90°C. The findings indicate that the AC breakdown voltages for mineral oils containing nanoparticles exceed those for unmodified mineral oils.