Abstract
Based on the theoretical analyses, a set of experimental equipment, which consisting of a 20-litre closed spherical container, a gas distribution system, an ignition system, a heating system and a data acquisition system, was adopted to experimentally investigate the effects of the different environmental temperatures on the gas explosion pressure and the maximum pressure rise rate. The experimental results show that when the other conditions remain unchangeable, the maximum explosion pressure gradually decreases with the increase of the environmental temperature and its attenuation is linear with the reciprocal of the environmental temperature. With the increase of the environmental temperature, the chemical reaction rate quickens, and the time that the explosion pressure reaches its peak shortens. The maximum pressure rise rate of the gas explosion is nonlinear with the increase of the environmental temperature, but it basically remains unchanged in the 298-473 K environmental temperature range.
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