文献类型：期刊文献

英文题名：Experimental study on the explosion characteristics of methane/air mixtures with hydrogen addition

作者：Shen, Xiaobo[1];Xiu, Guangli[1];Wu, Sizhe[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Risk Assessment &, Shanghai 200237, Peoples R China

年份：2017

卷号：120

起止页码：741

外文期刊名：APPLIED THERMAL ENGINEERING

收录：;EI(收录号：20171703596066);WOS:【SCI-EXPANDED(收录号:WOS:000401593000070)】；

基金：This work is funded by Shanghai Sailing Program (No. 16YF1402000), the National Natural Science Foundation of China (Grant No. 51604121), the China Postdoctoral Science Foundation (No. 2015M581550), State Key Laboratory of Fire Science (No. HZ2015-KF12), and the Fundamental Research Funds for the Central Universities (No. 22A201514059). The authors gratefully thank these supports.

语种：英文

外文关键词：Hydrogen addition; Methane; Explosion pressure; Laminar flame speed; Flammability limit

摘要：Experiments were performed to measure the explosion parameters of methane-hydrogen/air mixtures in a standard 20-L spherical vessel by pressure sensor. Data were carefully analyzed and compared to systematically evaluate the effect of hydrogen addition. When the hydrogen content is less than 30%, the curve peaks of maximum explosion pressures versus methane content are very close to each other, which is a combined manifestation of equivalence ratio and flame expansion effects. Nevertheless, the peaks of maximum pressure rise rates versus methane content grow up remarkably due to the increment of thermal conductivity and laminar flame speed with increasing hydrogen content. Besides, with hydrogen addition, both lower and upper flammability limits of methane in the mixture decline prominently. The laminar flame speed varies similarly to maximum pressure rise rate and it is predominantly controlled by the total equivalence ratio of the binary fuel blend in air. Overall, the hydrogen addition could significantly enhance the explosion risk and severity of the fuel blend system. (C) 2017 Published by Elsevier Ltd.