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Influence of Combustion Flame on Flashover Characteristics Due to Fire Occurrence  

하장호 (삼척산업대학교)
김인식 (경일대학교 전기공학과)
정우영 (현대소방)
Publication Information
Fire Science and Engineering / v.17, no.2, 2003 , pp. 25-34 More about this Journal
Abstract
In this paper, characteristics of the DC flashover voltage in the horizontal air gap of sphere-sphere/needle-needle electrode system were investigated when the combustion flame of paraffin oil was present between the two electrodes. The reduction characteristic of DC flashover voltage was discussed with the thermal ionization process, the relative air density and the deflection phenomena in the shape of flames that caused by the corona wind and Coulomb's force. As the results of an experimental investigation, It was found that the reduction characteristics of DC flashover voltages with flames were affected strongly by the flame deflection and the change of relative air density. It was also found that the thermal ionization phenomena were not important in the range of combustion flame temperature.
Keywords
Combustion flame; Electrical characteristics; Flashover voltage;
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