Measurement of laminar burning velocities and Markstein lengths of diluted hydrogen-enriched natural gas

被引：58
|
作者：
Miao, Haiyan [1 ]
Jiao, Qi [1 ]
Huang, Zuohua [1 ]
Jiang, Deming [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Energy & Power Eng, State Key Lab Multiphase Flow Power Engn, Xian, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2009年 / 34卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Hydrogen-enriched natural gas; Diluent gas; Laminar burning velocity; Markstein length; Constant volume combustion bomb; METHANE-AIR MIXTURES; ENGINE; FLAMES; RECIRCULATION; HYDROCARBON; STABILITY; PRESSURE; BOMB;
D O I：
10.1016/j.ijhydene.2008.10.050
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 laminar flame characteristics of natural gas-hydrogen-air-diluent gas (nitrogen/CO2) mixtures were studied in a constant volume combustion bomb at various diluent ratios, hydrogen fractions and equivalence ratios. Both unstretched laminar burning velocity and Markstein length were obtained. The results showed that hydrogen fraction diluent ratio, and equivalence ratio have combined influence on laminar burning velocity and flame instability. The unstretched laminar burning velocity is reduced at a rate that is increased with the increase of the diluent ratio. The reduction effect of CO2 diluent gas is stronger than that of nitrogen diluent gas. Hydrogen-enriched natural gas with high hydrogen fraction can tolerate more diluent gas than that with low hydrogen fraction. Markstein length can either increase or decrease with the increase of the diluent ratio, depending on the hydrogen fraction of the fuel. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：507 / 518
页数：12
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