Experimental study on the explosion characteristics of methane/air mixtures with hydrogen addition

摘要: Abstract Experiments were performed to measure the explosion parameters of methane-hydrogen/air mixtures in a standard 20-L spherical vessel by pressure sensor. Data carefully analyzed and compared systematically evaluate effect hydrogen addition. When content is less than 30%, curve peaks maximum pressures versus methane are very close each other, which combined manifestation equivalence ratio flame expansion effects. Nevertheless, rise rates grow up remarkably due increment thermal conductivity laminar speed with increasing content. Besides, addition, both lower upper flammability limits mixture decline prominently. The varies similarly rate it predominantly controlled total binary fuel blend air. Overall, addition could significantly enhance risk severity system.