Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their Aging

Over the last few decades the insulating performance of transformer oils has been broadly studied under the point of view of nanotechnology, which tries to improve the insulating and heat dissipation performance of transformer oils by suspending nanoparticles. Many authors have analyzed the thermal...

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Main Authors:	Inmaculada Fernández, Rafael Valiente, Félix Ortiz, Carlos J. Renedo, Alfredo Ortiz
Format:	Article
Language:	English
Published:	MDPI AG 2020-04-01
Series:	Nanomaterials
Subjects:	natural ester TiOsub>2</sub> ZnO thermal aging nanofluid breakdown voltage
Online Access:	https://www.mdpi.com/2079-4991/10/4/692

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record_format	Article
spelling	doaj-0e1fa087b6064a7a904027244625906c2020-11-25T03:25:29ZengMDPI AGNanomaterials2079-49912020-04-011069269210.3390/nano10040692Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their AgingInmaculada Fernández0Rafael Valiente1Félix Ortiz2Carlos J. Renedo3Alfredo Ortiz4Department of Electrical and Energy Engineering, Faculty of Industrial and Telecommunications Engineering, University of Cantabria, 39005 Santander, SpainDepartment of Applied Physics, Science Faculty, University of Cantabria, IDIVAL, 39005 Santander, SpainDepartment of Electrical and Energy Engineering, Faculty of Industrial and Telecommunications Engineering, University of Cantabria, 39005 Santander, SpainDepartment of Electrical and Energy Engineering, Faculty of Industrial and Telecommunications Engineering, University of Cantabria, 39005 Santander, SpainDepartment of Electrical and Energy Engineering, Faculty of Industrial and Telecommunications Engineering, University of Cantabria, 39005 Santander, SpainOver the last few decades the insulating performance of transformer oils has been broadly studied under the point of view of nanotechnology, which tries to improve the insulating and heat dissipation performance of transformer oils by suspending nanoparticles. Many authors have analyzed the thermal and dielectric behavior of vegetable oil based-nanofluids, however, very few works have studied the evolution of these liquids during thermal aging and their stability. In this paper has been evaluated the performance of aged vegetable oil based-nanofluids, which have been subjected to accelerated thermal aging at 150 °C. Nanoparticles of TiO<sub>2</sub> and ZnO have been dispersed in a commercial natural ester. Breakdown voltage, resistivity, dissipation factor and acidity of nanofluid samples have been measured according to standard methods, as well as stability. Moreover, it has been analyzed the degradation of Kraft paper through the degree of polymerization (DP). The results have showed that although nanoparticles improve breakdown voltage, they increase the ageing of insulation liquids and dielectric paper.https://www.mdpi.com/2079-4991/10/4/692natural esterTiOsub>2</sub>ZnOthermal agingnanofluidbreakdown voltage
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Inmaculada Fernández Rafael Valiente Félix Ortiz Carlos J. Renedo Alfredo Ortiz
spellingShingle	Inmaculada Fernández Rafael Valiente Félix Ortiz Carlos J. Renedo Alfredo Ortiz Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their Aging Nanomaterials natural ester TiOsub>2</sub> ZnO thermal aging nanofluid breakdown voltage
author_facet	Inmaculada Fernández Rafael Valiente Félix Ortiz Carlos J. Renedo Alfredo Ortiz
author_sort	Inmaculada Fernández
title	Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their Aging
title_short	Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their Aging
title_full	Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their Aging
title_fullStr	Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their Aging
title_full_unstemmed	Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their Aging
title_sort	effect of tio<sub>2</sub> and zno nanoparticles on the performance of dielectric nanofluids based on vegetable esters during their aging
publisher	MDPI AG
series	Nanomaterials
issn	2079-4991
publishDate	2020-04-01
description	Over the last few decades the insulating performance of transformer oils has been broadly studied under the point of view of nanotechnology, which tries to improve the insulating and heat dissipation performance of transformer oils by suspending nanoparticles. Many authors have analyzed the thermal and dielectric behavior of vegetable oil based-nanofluids, however, very few works have studied the evolution of these liquids during thermal aging and their stability. In this paper has been evaluated the performance of aged vegetable oil based-nanofluids, which have been subjected to accelerated thermal aging at 150 °C. Nanoparticles of TiO<sub>2</sub> and ZnO have been dispersed in a commercial natural ester. Breakdown voltage, resistivity, dissipation factor and acidity of nanofluid samples have been measured according to standard methods, as well as stability. Moreover, it has been analyzed the degradation of Kraft paper through the degree of polymerization (DP). The results have showed that although nanoparticles improve breakdown voltage, they increase the ageing of insulation liquids and dielectric paper.
topic	natural ester TiOsub>2</sub> ZnO thermal aging nanofluid breakdown voltage
url	https://www.mdpi.com/2079-4991/10/4/692
work_keys_str_mv	AT inmaculadafernandez effectoftiosub2subandznonanoparticlesontheperformanceofdielectricnanofluidsbasedonvegetableestersduringtheiraging AT rafaelvaliente effectoftiosub2subandznonanoparticlesontheperformanceofdielectricnanofluidsbasedonvegetableestersduringtheiraging AT felixortiz effectoftiosub2subandznonanoparticlesontheperformanceofdielectricnanofluidsbasedonvegetableestersduringtheiraging AT carlosjrenedo effectoftiosub2subandznonanoparticlesontheperformanceofdielectricnanofluidsbasedonvegetableestersduringtheiraging AT alfredoortiz effectoftiosub2subandznonanoparticlesontheperformanceofdielectricnanofluidsbasedonvegetableestersduringtheiraging
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Effect of TiO<sub>2</sub> and ZnO Nanoparticles on the Performance of Dielectric Nanofluids Based on Vegetable Esters During Their Aging

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