文献类型：期刊文献

英文题名：Explosion behaviors of mixtures of methane and air with saturated water vapor

作者：Shen, Xiaobo[1];Zhang, Bo[2];Zhang, Xiaoliang[3];Wu, Sizhe[1]

机构：[1]E China Univ Sci & Technol, State Environm Protect Key Lab Risk Assessment &, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China;[3]Shanghai Inst Technol, Coll Urban Construct & Safety Engn, Shanghai 201418, Peoples R China

年份：2016

卷号：177

起止页码：15

外文期刊名：FUEL

收录：;EI(收录号：20161202118439);WOS:【SCI-EXPANDED(收录号:WOS:000373061800003)】；

基金：This work is funded by the Fundamental Research Funds for the Central Universities (No. 22A201514059), the China Postdoctoral Science Foundation (No. 2015M581550) and State Key Laboratory of Fire Science (No. HZ2015-KF12). The authors gratefully thank these supports. Xiaoliang Zhang would like to thank National Natural Science Foundation of China (No. 51304137). We also thank Dr. Xueliang Yang at Princeton University for his careful advice and assistance.

语种：英文

外文关键词：Methane; Saturated water vapor; Explosion; Pressure; Laminar flame speed

摘要：The explosion and combustion parameters of mixtures of methane and air with saturated water vapor were experimentally measured in a standard 20-L spherical explosion vessel at room temperature and atmospheric pressure. The experimental data were carefully scrutinized and compared to elucidate the effect of saturated water vapor in air. When the methane content is below 10%, the maximum explosion pressure, maximum rate of pressure rise and laminar flame speed during explosion are slightly affected, which is attributed to the dual role of water vapor: on one hand, the water vapor suppresses the explosion by thermal and chemical effects; on the other hand, the addition of water vapor makes the equivalence ratio higher than that at dry condition with the same methane content. Then when the methane content is relatively higher, the discrepancies between parameters are quite pronounced for the same reason. The flammability limits of methane in the mixture become narrower (6-14%) compared to dry methane/air mixtures (5-15%). Additionally, the measured laminar flame speeds and computed ones by HP-Mech agree well with each other in this work. (C) 2016 Elsevier Ltd. All rights reserved.