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Reference: ISH2017_366

Type:
ISH Collection
ISH Collection
Title:
Investigation on electric and dielectric behavior of magnetite doped nanofluids
Abstracts
This attempt aims at developing a new class of insulating liquid by
incorporation of nanoparticles to improve electric and dielectric properties of conventional
fluids, which would result in miniaturization of oil-filled high voltage components at
reduced costs. Material at nano level tends generally to attract each other leading to
agglomeration, because of Van-der-Waals forces, which is the main challenge in
preparation of nanofluids. Therefore, a lot of care has been paid to achieve a stable multiphase
suspension by modifying the surface of the nanoadditives with an appropriate
surfactant. In this research, nanofluids are produced by homogenous dispersion of ironoxide
nanoparticles in ester liquid at diverse concentrations. Thereafter, the prepared
suspensions are submitted to ultrasonic waves to break down the cluster of nano-sized
constituents and consequently to achieve a homogenous distribution of nanofillers. The
morphology considering the form and size of the additives is studied via the transmission
electron microscopy (TEM).
In order to scrutinize the electrical performance of the modified fluids, breakdown voltage
of nanofluids is measured by applying a sinusoidal voltage. Moreover, dielectric
dissipation factor of the samples is determined at different temperatures and frequencies
in order to investigate the influence of degree of enrichment. Furthermore, the partial
discharge behaviour of the magnetite doped nanofluids is investigated.
File Size: 662 KB
Pages NB: 5
Year: 2017

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