Dielectric properties of sunflower, rapeseed and commonly used mineral oil

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F16%3A43928864" target="_blank" >RIV/49777513:23220/16:43928864 - isvavai.cz</a>

Výsledek na webu

<a href="http://ieeexplore.ieee.org/document/7521753/" target="_blank" >http://ieeexplore.ieee.org/document/7521753/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/EPE.2016.7521753" target="_blank" >10.1109/EPE.2016.7521753</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dielectric properties of sunflower, rapeseed and commonly used mineral oil

Popis výsledku v původním jazyce

This paper deals with analyses of chemical structure and real and imaginary parts of complex permittivity of sunflower, rapeseed and commonly used mineral oil. The sunflower and rapeseed oils measured are natural ester molecules with a triacylglycerol structure and have mainly very good fire resistance and biodegradability. The measured commonly used mineral oil is a mixture of hydrocarbons produced from crude oil and belongs to the group of naphthenic oils consisting mainly of cycloalkanes. It is rather inflammable and dangerous for living environment. The measurement was performed by means of the dielectric spectroscopy method. The real and imaginary parts of complex permittivity were analyzed at frequencies from 5 mHz to 0.5 MHz and within the temperature range from -50 oC to 90 oC. The measured spectrums displayed conductive component as well as relaxation processes. The results showed that the measured dielectric properties of the investigated vegetable oils were similar to each other in the evaluated temperature range, but different from the commonly used mineral oil properties. The properties of the commonly used mineral oil were much better than those of the sunflower and rapeseed oils. The research of insulation liquids should aim at searching oils with insulation properties similar to properties of mineral oils and fire resistance and biodegradability similar to vegetable oils.

Název v anglickém jazyce

Dielectric properties of sunflower, rapeseed and commonly used mineral oil

Popis výsledku anglicky

This paper deals with analyses of chemical structure and real and imaginary parts of complex permittivity of sunflower, rapeseed and commonly used mineral oil. The sunflower and rapeseed oils measured are natural ester molecules with a triacylglycerol structure and have mainly very good fire resistance and biodegradability. The measured commonly used mineral oil is a mixture of hydrocarbons produced from crude oil and belongs to the group of naphthenic oils consisting mainly of cycloalkanes. It is rather inflammable and dangerous for living environment. The measurement was performed by means of the dielectric spectroscopy method. The real and imaginary parts of complex permittivity were analyzed at frequencies from 5 mHz to 0.5 MHz and within the temperature range from -50 oC to 90 oC. The measured spectrums displayed conductive component as well as relaxation processes. The results showed that the measured dielectric properties of the investigated vegetable oils were similar to each other in the evaluated temperature range, but different from the commonly used mineral oil properties. The properties of the commonly used mineral oil were much better than those of the sunflower and rapeseed oils. The research of insulation liquids should aim at searching oils with insulation properties similar to properties of mineral oils and fire resistance and biodegradability similar to vegetable oils.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0094" target="_blank" >ED2.1.00/03.0094: Regionální inovační centrum elektrotechniky (RICE)</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 2016 17th International Scientific Conference on Electric Power Engineering (EPE)

ISBN

978-1-5090-0907-7

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

347-350

Název nakladatele

Czech Technical University in Prague

Místo vydání

Prague

Místo konání akce

Praha, Česká republika

Datum konání akce

16. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000382934600039