Detail publikace

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.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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

Vydáno

15. 12. 2022

Nakladatel

Elsevier

Místo

Nizozemí

ISSN

0167-7322

Periodikum

JOURNAL OF MOLECULAR LIQUIDS

Ročník

368

Číslo

B

Stát

Nizozemsko

Strany od

1

Strany do

11

Strany počet

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"
}