Assessment of detonation hazards in high-pressure hydrogen storage from chemical sensitivity analysis

Hoi Dick Ng, Yiguang Ju, John H.S. Lee

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123 Scopus citations


In this study, a series of detonation sensitivity analyses have been carried out to assess detonation hazards in hydrogen-air mixture. The present investigation in particular concerns with the effect of elevated initial pressure on the detonation sensitivity, which stems from the renewing interest in preventing possible explosion scenario in hydrogen economy when high-pressure hydrogen storage facilities are contaminated with air. From the steady ZND analyses based on a recently updated comprehensive kinetic mechanism of hydrogen combustion by Li et al. [Int J Chem Kinet 2004;36:566-75] and using improved semi-empirical models, various dynamic parameters, i.e., characteristic cell size and direct initiation energy, for hydrogen-air detonations are estimated and assessed against available experimental data. Results for the hydrogen-air detonation sensitivity indicated that from a purely chemical kinetics consideration, the probability of having a detonation of hydrogen-air mixture at elevated initial pressure is not higher than in other hydrocarbon fuels at elevated initial pressure.

Original languageEnglish (US)
Pages (from-to)93-99
Number of pages7
JournalInternational Journal of Hydrogen Energy
Issue number1
StatePublished - Jan 2007

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology


  • Chemical kinetics
  • Detonation sensitivity
  • High-pressure
  • Hydrogen storage


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