Electro-Insulating Nanofluids Based on Synthetic Ester and TiO 2 or C 60 Nanoparticles in Power Transformer

Zbigniew Nadolny and Grzegorz Dombek
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Zbigniew Nadolny: Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo 3A, 60-965 Poznan, Poland
Grzegorz Dombek: Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo 3A, 60-965 Poznan, Poland

Energies, 2018, vol. 11, issue 8, 1-11

Abstract: The article discusses thermal properties of synthetic ester admixed with nanoparticles. The analyzed thermal properties were: thermal conductivity λ , kinematic viscosity υ , density ρ , specific heat c p , and the thermal expansion factor β - all obtained by means of measurements. On the basis of these, the authors calculated the heat transfer factor α , which determines the ability of the liquid to heat transport. The authors used nanoparticles of fullerene C 60 and titanium oxide TiO 2 . The analysis of the thermal properties was done for the temperatures of 25, 40, 60 and 80 °C. The authors analyzed the impact of nanoparticles C 60 and TiO 2 on thermal properties of synthetic ester. They proved that fullerene C 60 in principle had no influence on heat transfer factor α of the ester, while titanium oxide TiO 2 had some positive influence on the factor, the value of which increased about 1–3%.

Keywords: synthetic ester; titanium dioxide; fullerene; nanofluids; dielectrics; insulation system; power transformer; thermal properties (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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