Comparison of Polarization Phenomena and Changes in Relative Permittivity in Mineral- and Ester-Based Nanofluids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F25%3A43976242" target="_blank" >RIV/49777513:23220/25:43976242 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/11068218" target="_blank" >https://ieeexplore.ieee.org/document/11068218</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ICDL63868.2025.11068218" target="_blank" >10.1109/ICDL63868.2025.11068218</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Polarization Phenomena and Changes in Relative Permittivity in Mineral- and Ester-Based Nanofluids

Popis výsledku v původním jazyce

Two different phenomena were observed in nanofluids with different oil-based fluids. While the relative permittivity increases in mineral oil-based oxide nanofluids, the opposite effect is seen in ester nanofluids. This paper describes the relaxation times and polarizations in pure oil samples and nanofluids, using Havriliak-Negami formula, a mathematical explanation of this phenomenon is attempted. An experiment was conducted where pure samples of the mineral oil Nynas Lyra, the natural ester rapeseed oil, and synthetic ester oil MIDEL 7131, and then their nanofluids with SiO2 additive were measured. The measurements were carried out using Broadband dielectric spectroscopy as a function of frequency and temperature.

Název v anglickém jazyce

Comparison of Polarization Phenomena and Changes in Relative Permittivity in Mineral- and Ester-Based Nanofluids

Popis výsledku anglicky

Two different phenomena were observed in nanofluids with different oil-based fluids. While the relative permittivity increases in mineral oil-based oxide nanofluids, the opposite effect is seen in ester nanofluids. This paper describes the relaxation times and polarizations in pure oil samples and nanofluids, using Havriliak-Negami formula, a mathematical explanation of this phenomenon is attempted. An experiment was conducted where pure samples of the mineral oil Nynas Lyra, the natural ester rapeseed oil, and synthetic ester oil MIDEL 7131, and then their nanofluids with SiO2 additive were measured. The measurements were carried out using Broadband dielectric spectroscopy as a function of frequency and temperature.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

2025 IEEE International Conference on Dielectric Liquids (ICDL)

ISBN

978-1-66547-758-1

ISSN

2153-3725

e-ISSN

2153-3733

Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

IEEE

Místo vydání

Piscaway

Místo konání akce

Lodz, Poland

Datum konání akce

18. 5. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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