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Electrical conduction currents of a mineral oil-based nanofluid in needle-plane configuration
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-8173-8765
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-6375-6142
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.ORCID iD: 0000-0003-4774-4341
2016 (English)In: 2016 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA (IEEE CEIDP), IEEE conference proceedings, 2016, p. 687-690Conference paper, Published paper (Refereed)
Abstract [en]

We present experiments and simulations on the electrical conduction currents of purified transformer oil with and without surface-modified MgO nanoparticles. Results show that on the injection regime of the voltage-current characteristics, nanoparticles increase the charge production in the fluid. It is also found that the conduction currents in the space-charge-limited regime increased at a lower rate as a function of the voltage in the presence of nanoparticles. The numerical simulations suggest electron attachment is increased due to the nanoparticles, leading to larger accumulation of negative ionic space charge close to the needle in the space-charge-limited regime. It is concluded that electron attachment may be significantly increased with nanoparticles, becoming an important process of electrical conduction in nanofluids.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2016. p. 687-690
Series
Conference on Electrical Insulation and Dielectric Phenomena Annual Report, ISSN 0084-9162
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-201297DOI: 10.1109/CEIDP.2016.7785694ISI: 000391639700142Scopus ID: 2-s2.0-85009823702ISBN: 978-1-5090-4654-6 (print)OAI: oai:DiVA.org:kth-201297DiVA, id: diva2:1073970
Conference
IEEE Conference on Electrical Insulation and Dielectric Phenomena (IEEE CEIDP), OCT 16-19, 2016, Toronto, CANADA
Note

QC 20170214

Available from: 2017-02-14 Created: 2017-02-14 Last updated: 2017-03-07Bibliographically approved

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Pallon, L. K. H.

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