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Effect of viscosity and water content on the breakdown strength of vegetable oils

Effect of viscosity and water content on the breakdown strength of vegetable oils
Effect of viscosity and water content on the breakdown strength of vegetable oils
The effect of viscosity on AC breakdown strength was studied using aged sunflower oil. After ageing, the oil was darkened and the viscosity and water content increased. Whilst the electrical conductivity increased with ageing as anticipated, the AC breakdown strength showed an unexpected increase. In addition the effect of water on breakdown strength was probed using carefully treated olive oil. Whilst extended periods of drying did not change the electrical properties, adding water increased the electrical conductivity and reduced the breakdown strength. This indicates that increased viscosity is the cause of the observed unexpected increases in AC breakdown strength.
Hosier, I.L.
6a44329e-b742-44de-afa7-073f80a78e26
Gu, J.
7cc36e87-c0c0-4a05-9123-0c470306c2dd
Chotchuangchutchavel, W.
66665e45-a61a-48a7-823d-bfb78d619935
Vaughan, A.S.
6d813b66-17f9-4864-9763-25a6d659d8a3
Hosier, I.L.
6a44329e-b742-44de-afa7-073f80a78e26
Gu, J.
7cc36e87-c0c0-4a05-9123-0c470306c2dd
Chotchuangchutchavel, W.
66665e45-a61a-48a7-823d-bfb78d619935
Vaughan, A.S.
6d813b66-17f9-4864-9763-25a6d659d8a3

Hosier, I.L., Gu, J., Chotchuangchutchavel, W. and Vaughan, A.S. (2014) Effect of viscosity and water content on the breakdown strength of vegetable oils. 18th IEEE International Conference on Dielectric Liquids, Slovenia. 30 Jun - 03 Jul 2014.

Record type: Conference or Workshop Item (Poster)

Abstract

The effect of viscosity on AC breakdown strength was studied using aged sunflower oil. After ageing, the oil was darkened and the viscosity and water content increased. Whilst the electrical conductivity increased with ageing as anticipated, the AC breakdown strength showed an unexpected increase. In addition the effect of water on breakdown strength was probed using carefully treated olive oil. Whilst extended periods of drying did not change the electrical properties, adding water increased the electrical conductivity and reduced the breakdown strength. This indicates that increased viscosity is the cause of the observed unexpected increases in AC breakdown strength.

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Published date: 30 June 2014
Venue - Dates: 18th IEEE International Conference on Dielectric Liquids, Slovenia, 2014-06-30 - 2014-07-03
Organisations: EEE

Identifiers

Local EPrints ID: 367958
URI: http://eprints.soton.ac.uk/id/eprint/367958
PURE UUID: 346c472f-7456-4b79-b798-63733943d188
ORCID for I.L. Hosier: ORCID iD orcid.org/0000-0003-4365-9385
ORCID for A.S. Vaughan: ORCID iD orcid.org/0000-0002-0535-513X

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Date deposited: 12 Aug 2014 10:13
Last modified: 19 Nov 2019 01:52

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Contributors

Author: I.L. Hosier ORCID iD
Author: J. Gu
Author: W. Chotchuangchutchavel
Author: A.S. Vaughan ORCID iD

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