Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7720124 | International Journal of Hydrogen Energy | 2014 | 8 Pages |
Abstract
In order to simulate an accidental hydrogen release from the high pressure pipe system of a hydrogen facility a systematic study on the nature of transient hydrogen jets into air and their combustion behavior was performed at the KIT hydrogen test site HYKA. Horizontal unsteady hydrogen jets from a reservoir of 0.37Â dm3 with initial pressures of up to 200Â bar have been investigated. The hydrogen jets released via round nozzles 3, 4, and 10Â mm were ignited with different ignition times and positions. The experiments provide new experimental data on pressure loads and heat releases resulting from the deflagration of hydrogen-air clouds formed by unsteady turbulent hydrogen jets released into a free environment. It is shown that the maximum pressure loads occur for ignition in a narrow position and time window. The possible hazard potential arising from an ignited free transient hydrogen jet is described.
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Authors
J. Grune, K. Sempert, M. Kuznetsov, T. Jordan,