Deflagrations of H2-air and CH4-air lean mixtures in a vented multi-compartment environment
Deflagrations of H2-air and CH4-air lean mixtures in a vented multi-compartment environment
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DOI：
10.1016/j.energy.2004.02.012
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发表时间：
2005-06-01
期刊：
影响因子：
9
通讯作者：
Fineschi, F
中科院分区：
文献类型：
--
作者：
Carcassi, MN;Fineschi, F
氢作为未来能源载体的使用取决于其安全性。氢气通常被错误地认为是比甲烷更危险的气体，因为后者被广泛使用，因此被认为是可接受的。本文分析了在低浓度（接近可燃下限）的H-2/空气和CH 4/空气混合物的爆燃，特别是，侧重于这种燃烧的现象和危险方面。相关的可能事故涉及封闭环境（车库、实验室、服务室、公共汽车和汽车的内部容积等）。存在点火源的地方。在这些情况下，燃料浓度一达到可燃性下限，燃烧就可能发生。根据（1）氢和甲烷的一般能量特性，（2）与燃烧现象有关的主要参数的理论检验，和（3）LargeView 2装置的实验结果，对氢和甲烷进行了比较。其中在通风的多室容器中用两种气体进行了300多次爆燃试验。(c)2004爱思唯尔有限公司保留所有权利。
The use of hydrogen as an energy carrier for the future is conditioned by its safety. Hydrogen is commonly and incorrectly perceived as being a more dangerous gas than methane, since the latter is widely used and thus considered to be acceptable. The paper analyses deflagrations of H-2/air and CH4/air mixtures at low concentrations (close to the lower flammability limits) and, in particular, focuses on the phenomenology and dangerous aspects of this kind of combustion. The related possible accidents involve closed environments (garages, laboratories, service rooms, internal volumes of buses and cars, etc.) where ignition sources are present. In these cases, combustion probably takes place as soon as the fuel concentration reaches the lower flammability limit.Hydrogen and methane are compared on the basis of (1) their general energetic characteristics, (2) a theoretical examination of the main parameters related to the combustion phenomenon, and (3) the experimental results of the LargeView2 apparatus, where more than 300 deflagration tests were made with both gases in a vented multi-compartment container. (c) 2004 Elsevier Ltd. All rights reserved.