Wasserstoff-Freisetzungen aus Ausbläsern/Hydrogen releases from exhausts

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Cover of Volume: Technische Sicherheit Volume 13 (2023), Edition 05-06
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Technische Sicherheit

Volume 13 (2023), Edition 05-06

Authors:
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Publisher
VDI fachmedien, Düsseldorf
Publication year
2023
ISSN-Online
2191-0073
ISSN-Print
2191-0073

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Volume 13 (2023), Edition 05-06

Wasserstoff-Freisetzungen aus Ausbläsern/Hydrogen releases from exhausts

Authors:
,
ISSN-Print
2191-0073
ISSN-Online
2191-0073
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With increasing production and use of hydrogen, the question arises to what extent established free-jet models are suitable for calculating the release of hydrogen from exhausts with sufficient accuracy in order to be able to make statements on explosion protection based on this. A comparison with experimental investigations shows that thecalculations of models, which e.g. B. are suitable for natural gas, for very light gases may result in larger deviations. Modifications for the integral model by Schatzmann and the empirical model by Chen/Rodi have therefore been developed and compared with experimental investigations. In the case of a delayed ignition of the hydrogen gas cloud, relevant explosion overpressures have been measured in experimental investigations, which should be taken into account in a risk assessment. For this purpose, a calculation approach has been developed in connection with the multi-energy model.

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