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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F22%3APU146239" target="_blank" >RIV/00216305:26220/22:PU146239 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0167732222023418?dgcid=coauthor" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0167732222023418?dgcid=coauthor</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molliq.2022.120802" target="_blank" >10.1016/j.molliq.2022.120802</a>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

21001 - Nano-materials (production and properties)

Project

<a href="/en/project/LM2015092" target="_blank" >LM2015092: CVVOZE Power Laboratories</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

JOURNAL OF MOLECULAR LIQUIDS

ISSN

0167-7322

e-ISSN

1873-3166

Volume of the periodical

368

Issue of the periodical within the volume

B

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

1-11

UT code for WoS article

000899440900010

EID of the result in the Scopus database

2-s2.0-85142138666