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MINIMUM IGNITION ENERGY FOR A FUEL-AIR MIXTURE BY ELECTRICAL SPARK INITIATION
Abstract:
From the risks embedded in human activity, the risk of explosion has acquired a important connotation, justified by the statistics results that show the impressive position explosions play across the causes of collective accidents. Minimum ignition energy is a very important parameter in terms of characterization flammable gas mixtures. A brief description of the fundamental aspects of ignition is given as a basis for discussing the initiations of combustion in fuel – air mixtures by local sources (electrical sparks, heated bodies, lasers). The most important aspects of explosion initiations by electrical sparks (capacitive sparks, inductive-capacitive sparks, break sparks, sparks interruption of DC or AC circuits containing inductance) are reviewed in connection with the minimum ignition energy characteristic parameter of the ignition source. Original data are presented and discussed for a fuel-air mixture initiated by electrical spark. Experiments in this work are preliminary tests in order to improve the experimental equipments to achieve the best possible correlation with the literature data and further research on the determination and assessment of explosion initiation characteristic parameters in fuel-air mixture.

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