A modified electrical conductivity model for insulating oil-based nanofluids

Author

Jin Miao ; Ming Dong ; Liang-Ping Shen

Author_Institution

State Key Lab. of Electr. Insulation for Power Equip., Xi´an Jiaotong Univ., Xi´an, China

fYear

2012

fDate

23-27 Sept. 2012

Firstpage

1126

Lastpage

1129

Abstract

A new kind of nanofluids based on insulating oil was prepared with ZnO nanoparticles synthesized by solvothermal reaction, aiming at enhancing both the dielectric and thermal characteristics of insulating oil. A linear dependence of the effective electrical conductivity on volumetric fraction has been observed, and the electrical conductivity shows an exponential growth with temperature. To interpret the electrical conductivity mechanism, a modified model is introduced based on Maxwell electrical conductivity equation and electrophoresis phenomenon, and compared with the experimental results.

Keywords

electrical conductivity; electrophoresis; insulating oils; nanofluidics; nanoparticles; zinc compounds; Maxwell electrical conductivity equation; ZnO; dielectric characteristics; electrical conductivity mechanism; electrophoresis phenomenon; insulating oil-based nanofluids; modified electrical conductivity model; nanoparticles; solvothermal reaction; thermal characteristics; Conductivity; Nanofluidics; Nanoparticles; Oil insulation; Power transformer insulation; Temperature measurement; Zinc oxide; Electrical conductivity; electrophoresis; insulating oil; nanoparticle modification;

fLanguage

English

Publisher

ieee

Conference_Titel

Condition Monitoring and Diagnosis (CMD), 2012 International Conference on

Conference_Location

Bali

Print_ISBN

978-1-4673-1019-2

Type

conf

DOI

10.1109/CMD.2012.6416357

Filename

6416357