Effects of Insulation Thickness on Flame Spread over Electrical Copper Wire with Applied AC Electric Fields

Min Sung Kang; Chun Sang Yoo; Jeong Park; Suk Ho Chung; Oh Boong Kwon

doi:10.15231/jksc.2020.25.4.019

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2020 Vol.25, Issue 4 Preview Page Next Page

Research Article

Effects of Insulation Thickness on Flame Spread over Electrical Copper Wire with Applied AC Electric Fields AC 전기장이 인가된 구리 전선을 통해 전파하는 화염에 대해 피복재의 두께에 따른 화염 거동에 대한 실험적 연구

31 December 2020. pp. 19-25

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Abstract

Effects of insulation thickness on flame spread over electrical copper wires with applied AC electric fields were experimentally investigated. The AC volrage and frequency varied in ranges of 0-5 kV and 10-1000 Hz, respectively. A one electrode configuration was used such that the electric potential was applied to one wire end and thus the infinite ambience could be a ground. The results showed that the flame shape and the tilting direction were significantly influnced by applied voltage and frequency. The flame spread rate decreased in an increase of insulation thickness as well as varied sensitively with applied votage and frequency. Additionally, the molten polyethylene (PE) experienced various dynamic behaviors such as dripping of molten PE, electrospray, di-electro-phoresis, and rotation of molten PE, essentially affecting the flame spread rate. These complicated phenomena were systematically analyzed and discussed.

Keywords

Electric field

Electrospray

Di-electrophoresis

Dripping of molten PE

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Information

Publisher :The Korean Society of Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of the Korean Society of Combustion
Journal Title(Ko) :한국연소학회지
Volume : 25
No :4
Pages :19-25
Received Date : 2020-11-11
Revised Date : 2020-11-24
Accepted Date : 2020-11-24
DOI :https://doi.org/10.15231/jksc.2020.25.4.019

Journal of the Korean Society of Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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