Publication detail

Synthetic and natural ester-based nanofluids with fullerene and magnetite nanoparticles – An experimental AC breakdown voltage study

ŠÁRPATAKY, M. KRBAL, M. KURIMSKÝ, J. RAJŇAK, M. PAULOVIČOVÁ, K. PELIKÁN, L.

Original Title

Synthetic and natural ester-based nanofluids with fullerene and magnetite nanoparticles – An experimental AC breakdown voltage study

Type

journal article in Web of Science

Language

English

Original Abstract

Ester-based electrical insulating liquids constitute an attractive alternative to widely used mineral oils, especially due to their ecological benefits. In this study, we present an experimental comparison of AC breakdown voltage (BDV) in both natural and synthetic ester-based nanofluids with various concentra- tions of fullerene (C60) and magnetite (Fe3O4) nanoparticles. The BDV measurement was conducted with an AC voltage rise rate of 2 kV/s according IEC 60156 standard. While the suspensions of magnetite nanoparticles exhibited increased AC BDV for all samples tested, the fullerene-based nanofluids exhibited the enhanced AC BDV only for two among six nanoparticle concentrations. Accordingly, we present a comparative view of the electrical breakdown development using statistical descriptors. This study uses Weibull and normal distributions for statistical analysis to estimate AC breakdown voltage at different cumulative probability levels 1 %, 10 %, and 50 %. The parameters of theoretical distributions are fitted to the experimental data. Subsequently, statistical test of conformity to the distributions, and their skew- ness and kurtosis are analysed. The analysis reveals that AC BDV of nanofluids increases with the increas- ing cumulative probability more than those of pure esters. It is shown that the addition of fullerene nanoparticles tends to reduce AC BDV in the natural ester but not in the synthetic ester. The presence of magnetic nanoparticles in both esters yielded an enhancement of the AC BDV but in a different measure.

Keywords

Synthetic ester; Natural ester; Transformer oil; Fullerene; Magnetic nanoparticles; Breakdown voltage

Authors

ŠÁRPATAKY, M.; KRBAL, M.; KURIMSKÝ, J.; RAJŇAK, M.; PAULOVIČOVÁ, K.; PELIKÁN, L.

Released

15. 12. 2022

Publisher

Elsevier

Location

Nizozemí

ISBN

0167-7322

Periodical

JOURNAL OF MOLECULAR LIQUIDS

Year of study

368

Number

B

State

Kingdom of the Netherlands

Pages from

1

Pages to

11

Pages count

11

URL

https://www.sciencedirect.com/science/article/pii/S0167732222023418?dgcid=coauthor

BibTex

@article{BUT179998,
  author="Miloš {Šárpataky} and Michal {Krbal} and Juraj {Kurimský} and Michal {Rajňak} and Katarína {Paulovičová} and Luděk {Pelikán}",
  title="Synthetic and natural ester-based nanofluids with fullerene and magnetite nanoparticles – An experimental AC breakdown voltage study",
  journal="JOURNAL OF MOLECULAR LIQUIDS",
  year="2022",
  volume="368",
  number="B",
  pages="1--11",
  doi="10.1016/j.molliq.2022.120802",
  issn="0167-7322",
  url="https://www.sciencedirect.com/science/article/pii/S0167732222023418?dgcid=coauthor"
}