The effect of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) nanoparticles on the critical parameters of Synthetic ester based nanofluids

Abstract

The vegetable oil based esters (synthetic & natural) are environment friendly and fire-resistant substitutes for mineral oils, because they are fully biodegradable in nature and has better heat transfer characteristics. Their electrical, physical and chemical properties clearly indicate that these synthetic esters will be the next generation insulating oil to turn the environment green. Especially, it has been observed that the addition of nanoparticles into the insulating oils, the nanofluids exhibited tremendous improvement over the conventional mineral based insulating fluids. In this work, synthetic ester based nanofluids were prepared by employing Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3 (BCZT) nanoceramics with the aim of enhancing heat transfer and insulating characteristics. These synthetic ester based BCZT nanofluids were evaluated for various parameters such as AC breakdown voltage (BDV), thermal conductivity, loss tangent, dielectric permittivity, resistivity, and acidity. The thermal conductivity measurement indicated that there is no change in the heat transfer characteristics. The AC breakdown voltage (BDV) increased as the weight percent of BCZT nano particles increased and showed an enhancement in the breakdown strength by about 20% in comparison to the base oil. The effect of BCZT nano particles on the critical parameters were discussed in this work.