Calculation of the upper flammability limit of methane/hydrogen/air mixtures at elevated pressures and temperatures

被引：21
|
作者：
Van den Schoor, F. [1 ]
Verplaetsen, F. [2 ]
Berghmans, J. [1 ]
机构：
[1] Katholieke Univ Leuven, Dept Mech Engn, B-3000 Louvain, Belgium
[2] Adinex NV, B-2200 Herentals, Belgium
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 04期
关键词：
flammability limits; methane; hydrogen;
D O I：
10.1016/j.ijhydene.2008.01.002
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The results of three different numerical methods to calculate flammability limits-namely (1) the calculation of planar flames with the inclusion of a (radiation) heat loss term in the energy conservation equation, and the application of (2) a limiting burning velocity and of (3) a limiting flame temperature-are compared with experimental data on the upper flammability limit (UFL) of methane/hydrogen/air mixtures with hydrogen fuel molar fractions of 20% and 40%, at initial pressures up to 10 bar and initial temperatures up to 200 degrees C. The application of a limiting burning velocity is found to predict the pressure dependence of the UFL well, while the application of a limiting flame temperature generally is found to slightly underestimate the temperature dependence of the UFL. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1399 / 1406
页数：8
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