Explosion characteristics of hydrogen-nitrous oxide mixtures with carbon dioxide addition
Explosion characteristics of hydrogen-nitrous oxide mixtures with carbon dioxide addition
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DOI：
10.1016/j.ijhydene.2023.12.300
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发表时间：
2024-02
影响因子：
7.2
通讯作者：
Rong Liu;Yangfan Cheng;Bei-bei Zhang;Wen-tao Wang;Xiao Ma
中科院分区：
文献类型：
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作者：
Rong Liu;Yangfan Cheng;Bei-bei Zhang;Wen-tao Wang;Xiao Ma
本文研究了不同当量比（0.6-1.0）、初始压力（40-100 kPa）和二氧化碳含量（20%-40%）的H2/N2 O/CO2混合气体在常温（298 K）下的爆炸。得到了最大爆炸压力和压力上升速度，并进行了分析。结果表明，CO2对H2/N2 O爆炸强度、火焰不稳定性以及爆燃向爆轰的倾向性有明显的削弱作用。此外，二氧化碳的加入影响了绝热温度和分子数之间的两种竞争效应。最大爆炸压力和压力上升速度随当量比的变化取决于二氧化碳的含量。最大压力上升速度与初始压力之间只有线性关系。这些结果将有助于在潜在的火灾和爆炸危险的情况下开发防爆装置。
In this work, the explosion of hydrogen/nitrous oxide/carbon dioxide mixtures with various equivalence ratios (0.6–1.0), initial pressures (40–100 kPa), and carbon dioxide fractions (20%–40 %) at ambient temperature (298 K) was conducted inside a normative 15.625-L cubic container. The maximum explosion pressure and pressure rise speed were obtained and analyzed. The results show that carbon dioxide plays a crucial role in weakening H2/N2O explosion intensity, flame instabilities, as well as the tendency of deflagration to detonation. In addition, the addition of carbon dioxide has affected the two competitive effects between adiabatic temperature and molecular number. The variations of maximum explosion pressure and pressure rise speed with equivalence ratios depend on the carbon dioxide fraction. Only a linear dependence was found between maximum pressure rise speed and original pressure. These results would be useful in developing explosion-proof devices in the event of potential fire and explosion hazards.