Parameters of Thermal Radiation of a Hydrogen Flame

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Abstract

High attention is now devoted to a fire safety of objects with a presence of hydrogen due to a rapid development of a hydrogen energetics. An evaluation of a risk for the objects of hydrogen energetics is one of the key tasks for a such development. A decision of this task requires an information on a radiation intensity of hydrogen flames. But this information published in literature is often non-complete and sometimes contradictive. Therefore, this study is aimed on a review of literature sources published in Russian and international journals. The main value required for the fire risk evaluation is a surface radiation intensity of hydrogen flames. In this study four types of the flames were considered: gaseous jet flame; jet flame of liquid hydrogen; pool fire of liquid hydrogen; fireball. It was noted that surface thermal radiation intensity of the hydrogen flames is remarkably lower in comparison with hydrocarbon flames. The surface thermal radiation intensity Ef of a hydrogen gaseous jet flame cfn be accepted to be equal 33 kW/m2 in the fire risk calculations. The Ef value for the hydrogen fireball can be accepted to be equal 330 kW/m2. The surface thermal radiation intensity for combustion of liquid hydrogen (both for the jet flame and the pool fire) can be accepted to be equal 80 kW/m2.

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About the authors

Yu. N. Shebeko

All Russian Research Institute for Fire Protection of the Ministry of the Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters

Author for correspondence.
Email: yn_shebeko@mail.ru
Russian Federation, Balashikha

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