Increased dielectric and cooling properties of mineral oil based magnetic nanofluids for use in power systems
سال انتشار: 1393
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 374
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شناسه ملی سند علمی:
ICNN05_835
تاریخ نمایه سازی: 30 آبان 1394
چکیده مقاله:
In this study, the AC dielectric breakdown voltage and thermal efficiency of magnetic nanofluids based onmineral oil for use in power systems is reviewed. Magnetic nanofluids are obtained from dispersion of the magneticnanoparticles ]U± within the mineral insulating oil NYTRO LIBRA as the base fluid. Nano oil samples with volumeconcentration of 0.1% were studied under dielectric and thermal tests. The AC breakdown voltage was measuredaccording to IEC 60156 standard using the spherical electrodes and the thermal analyze was carried out in anexperimental setup for studying the heat transfer coefficient. Results indicate improved dielectric breakdown voltageand heat transfer coefficient. Increase the breakdown voltage of the transformer oil-based Nano oil is mainly due todielectric and magnetic properties of Fe3O4 nanoparticles that act as free electrons snapper, and reduce the rate of freeelectrons in the ionization process. Mineral oil based magnetic nanofluids are good alternative for use as insulating andcooling material in power systems.
کلیدواژه ها:
نویسندگان
S Jafar Madar
Department of mechanical engineering, University of Urmia, Urmia, Iran
J Ghasemi
Department of mechanical engineering, University of Zanjan, Zanjan, Iran
M Nazari
Department of mechanical engineering, University of Urmia, Urmia, Iran