Effects of hydrogen addition on the explosion venting characteristics of hydrogen-propane-air mixtures

被引：5

作者：

Song, Xianzhao ^{[1
,2
]}

Chen, Guangling ^{[3
]}

Dong, Yinfa ^{[2
]}

Wang, Shunyao ^{[1
,4
]}

Liu, Quan ^{[2
]}

Chen, Jianyu ^{[1
]}

Li, Bin ^{[2
]}

Zhang, Dan ^{[2
]}

Xie, Lifeng ^{[2
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 210094, Jiangsu, Peoples R China

[2] Nanjing Univ Sci & Technol, Sch Chem & Chem Engn, Nanjing 210094, Jiangsu, Peoples R China

[3] Nanjing NJTech Emergency Technol Co Ltd, Nanjing 210047, Jiangsu, Peoples R China

[4] Jinling Inst Technol, Sch Mech & Elect Engn, Nanjing 211169, Jiangsu, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 49卷

基金：

中国博士后科学基金;

关键词：

Vented explosion; Propane; Hydrogen fraction; Overpressure; Temperature; LAMINAR BURNING VELOCITIES; VENTED EXPLOSION; DETONATION LIMITS; IGNITION; COMBUSTION; PRESSURE; INSTABILITIES; BEHAVIORS; ENCLOSURE; ENERGY;

D O I：

10.1016/j.ijhydene.2023.08.346

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：

To study the effect of hydrogen fraction (n) in stoichiometric hydrogen-propane-air mixtures ranging from 0 to 1.0 on overpressure and external flame temperature, experiments on the vented explosion are conducted in a 1-m long cylindrical tube with a vent on the top surface. The explosion venting process is recorded by the high-speed shadowgraph imaging system, pressure testing system, and infrared thermal imager. The internal peak overpressure is proportional to the hydrogen fraction, and the external pressure peak (PExt) induced by the second explosion in the external flow field shows a similar trend. The higher external impulse occurs in higher hydrogen fractions and farther distances. The maximum flame length drops first and then rises with the addition of n. The maximum surface temperature of the external flame peaks at n = 1, followed by that of n = 0, n = 0.3, n = 0.9, and n = 0.6, respectively. Besides, the relative-safety radii, free of thermal radiant damage, are obtained. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：1269 / 1281

页数：13

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