The improvement of oil transformer performance
is related to several factors. The most important factors are
dielectric and thermal capability. Nanotechnology is an effective
science used for enhancing the dielectric and thermal properties
of the transformer oil. In this work, barium titanate (BT)
nanoparticles were dispersed into the pure transformer oil by
0.005 g/L volume fraction (vf%). From the obtained results, it is
noticed that BT enhances the thermal properties of the
transformer oil by about 33%, although, the dielectric properties
were decreased by about 10%. To improve the dielectric
properties also, 0.01 vf% titanium dioxide (TiO2) nanoparticles
with 0.005 vf% BT was dispersed into the base oil. The hybrid
nanofluid sample achieves about 33% and 45% enhancement for
the thermal and dielectric properties, respectively.