Electro-Insulating Nanofluids Based on Synthetic Ester and TiO2 or C60 Nanoparticles in Power Transformer

The article discusses thermal properties of synthetic ester admixed with nanoparticles. The analyzed thermal properties were: thermal conductivity , kinematic viscosity upsilon, density , specific heat c(p), and the thermal expansion factor - all obtained by means of measurements. On the basis of these, the authors calculated the heat transfer factor , which determines the ability of the liquid to heat transport. The authors used nanoparticles of fullerene C-60 and titanium oxide TiO2. The analysis of the thermal properties was done for the temperatures of 25, 40, 60 and 80 degrees C. The authors analyzed the impact of nanoparticles C-60 and TiO2 on thermal properties of synthetic ester. They proved that fullerene C-60 in principle had no influence on heat transfer factor of the ester, while titanium oxide TiO2 had some positive influence on the factor, the value of which increased about 1-3%.