Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7724542 | International Journal of Hydrogen Energy | 2011 | 8 Pages |
Abstract
Experiments on buoyant gas dispersion in an enclosure have been conducted in a facility of the typical size of a private garage. Helium is used as a model gas for hydrogen. For release flow rate of the order of 0.1Â Nl/min to 10Â Nl/min, the dispersion is studied in a tightly sealed configuration of the enclosure and for two vertical positions of a vent, near the bottom and near the top. Results are compared to existing simple analytical models. A good accordance is found in the tightly sealed case. With one vent, some significant differences with models are found for the highest flow rates due to a vertical stratification. However a good accordance is found in the limit of very low flow rates even for the simplest model based on a ventilation flow rate independent of the interior mixture density. The main properties of the equivalent flammable atmosphere formed with the vent are presented.
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Authors
B. Cariteau, J. Brinster, I. Tkatschenko,