Stability analysis and characterization of natural ester nanofluids for transformers

The present work aims at the preparation and characterization of a stable soybean natural ester nanofluid using alumina nanofiller, as an alternative to the conventional mineral oil. Stability using UV-Vis spectrophotometer and turbidity meter for various concentrations of nanofluids is reported and...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2020-10, Vol.27 (5), p.1715-1723
Main Authors: Jacob, Joyce, Preetha, P., Sindhu, T. K.
Format: Article
Language:English
Subjects:
Aluminum oxide
dielectrics
insulating oil
Mineral oils
Minerals
nanofluid
Nanofluidics
Nanofluids
nanoparticle
Nanoparticles
natural ester
Oil insulation
Oils
Soybeans
stability
Stability analysis
Thermal conductivity
Thermal stability
Turbidity
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Summary:The present work aims at the preparation and characterization of a stable soybean natural ester nanofluid using alumina nanofiller, as an alternative to the conventional mineral oil. Stability using UV-Vis spectrophotometer and turbidity meter for various concentrations of nanofluids is reported and analyzed. Natural ester nanofluids with 0.02 wt% nanofiller concentration shows the highest stability. AC breakdown voltage shows a 21.5 and 27.9% increase for unfilled and 0.02 wt% nanofilled natural ester, respectively, when compared to the unfilled mineral oil. An improvement of 5.4 and 14.6% in the thermal conductivity can be observed for unfilled and 0.1 wt% nanofilled natural ester, respectively, when compared to that of unfilled mineral oil.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2020.008445