The Study about The Minimum Ignition Energy for Electrostatic Discharge in The Gasoline-air Mixture

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Journal of Korean Institute of Fire Science and Engineering 1996;10(1):3-9.
Published online March 31, 1996.

정전기 방전에 의한 개소린-공기혼합기체의 최소착화에너지에 관한 연구

황명환이덕출

¹국립공업기술원 전기과²인하대학교 전기과

The Study about The Minimum Ignition Energy for Electrostatic Discharge in The Gasoline-air Mixture

Abstract

Electrostatic charge is generated in large scale or high speed processes dealing with materials with large resistance, or under complicated condition. Fire and explosion often occur due to electrostatic charge accumulated in flammable gases, vapor, liquids and powder. It is usually very difficult to verify the cause of accidents as well as the prevention. In this study, it is shown that the needle electrode needs the electrode gap from 1.8mm to 3.8mm, sphere electrode and plate electrodes need the electrode gap of 1.9mmfor the minimum ignition energy. The sphere electrode and the plate electrode requires 12.8mJ and 3.2mJ of minimum ignition energy respectively with the electrode gap of 1.1mm. The ignition voltage rises to very large value as the ground resistance increases.