Explosion characteristics of hydrogen-nitrogen-air mixtures at elevated pressures and temperatures

Chenglong Tang, Zuohua Huang, Chun Jin, Jiajia He, Jinhua Wang, Xibin Wang, Haiyan Miao

Research output: Contribution to journalArticlepeer-review

91 Citations (Scopus)

Abstract

An experimental study on the combustion characteristics of nitrogen diluted hydrogen was conducted in a constant volume combustion vessel over a wide range of equivalence ratios and dilution ratios at elevated pressures and temperatures. The explosion characteristics such as the explosion pressure, the combustion duration, the maximum rate of pressure rise, the deflagration index and the normalized mass burning rate were derived. The result shows that a short combustion duration and higher normalized mass burning rate were presented with the increase of equivalence ratio. With the increase of initial temperature, the explosion pressure, the maximum rate of pressure rise and the deflagration index were decreased, and a shorter combustion duration and higher normalized mass burning rate were presented. With the increase of initial pressure, the explosion pressure, the maximum rate of pressure rise and the deflagration index increase, a shorter combustion duration and higher normalized mass burning rate were presented. Nitrogen dilution significantly reduces the normalized mass burning rate and the deflagration index and thus the potential of explosion hazards.

Original languageEnglish
Pages (from-to)554-561
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number1
Early online date17 Nov 2008
DOIs
Publication statusPublished - 1 Jan 2009
Externally publishedYes

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