Self-ignition of hydrogen-nitrogen mixtures during high-pressure release into air

被引：52

作者：

Rudy, W. ^{[1
]}

Teodorczyk, A. ^{[1
]}

Wen, J. ^{[2
]}

机构：

[1] Warsaw Univ Technol, Inst Heat Engn, Nowowiejska 21-25, PL-00665 Warsaw, Poland

[2] Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

Spontaneous ignition; Hydrogen self-ignition; Hydrogen mixtures; Hydrogen safety; FLAME PROPAGATION; RUPTURE RATE; GAS; TUBE; DISCHARGE; MECHANISM;

D O I：

10.1016/j.ijhydene.2016.06.051

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：

This paper demonstrates experimental and numerical study on spontaneous ignition of H-2-N-2 mixtures during high-pressure release into air through the tubes of various diameters and lengths. The mixtures included 5% and 10% (vol.) N-2 addition to hydrogen being at initial pressure in range of 4.3-15.9 MPa. As a point of reference pure hydrogen release experiments were performed with use of the same experimental stand, experimental procedure and extension tubes. The results showed that N-2 addition may increase the initial pressure necessary to self-ignite the mixture as much as 2.12 or 2.85 - times for 5% and 10% N-2 addition, respectively. Additionally, simulations were performed with use of Cantera code (0-D) based on the ideal shock tube assumption and with the modified KIVA3V code (2-D) to establish the main factors responsible for ignition and sustained combustion during the release. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：7340 / 7352

页数：13

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