Combustion-related safety aspects of hydrogen in energy applications

Safety problems associated with the use of gaseous hydrogen as an energy carrier are compared with other combustibles (methane, propane). On the basis of a simple one-dimensional model, the whole combustion process can be simulated. Critical burning and flame velocities and the critical strength for incident shock waves for transition from deflagration-to-detonation are calculated. Flame inhibition methods are briefly discussed. The envisaged large-scale introduction of hydrogen as an energy carrier into energy supply systems raises questions concerning specific risks and necessary safety measures in a much greater extent and significance as compared to the exclusive industrial utilization of hydrogen.