Numerical analysis of accidental hydrogen release in a laboratory
| Autor: | Daniele Baraldi, M. Heitsch, Pietro Moretto |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Flammable liquid
Leak Hydrogen Renewable Energy Sustainability and the Environment business.industry Nuclear engineering Energy Engineering and Power Technology chemistry.chemical_element Computational fluid dynamics Condensed Matter Physics Hydrogen sensor Pipeline transport Hydrogen storage chemistry.chemical_compound Fuel Technology chemistry Environmental science business Gas compressor |
| Zdroj: | International Journal of Hydrogen Energy. 35:4409-4419 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2010.01.044 |
| Popis: | In a hydrogen laboratory hydrogen may accidentally leak from the high pressure systems and it may form a flammable mixture after mixing with air. CFD (Computational Fluid Dynamics) simulations of accidental hydrogen releases in a laboratory are performed in order to estimate the size and the resident time of the flammable cloud inside the laboratory. Moreover the effectiveness of the hydrogen sensor positions in detecting the presence of the hydrogen in the laboratory within few seconds has also been investigated. In a first scenario, the hydrogen coming from the storage is pumped by a compressor into the laboratory pipelines at constant pressure. To be conservative, it is assumed that the pressure can be maintained when the leak in the pipeline occurs. In a second scenario, the hydrogen flows directly from the storage into the laboratory pipeline without the compressor, and the pressure in this case is decreasing with time. In both cases, shut-off valves have been neglected in order to consider a worst case scenario. The simulation results from the two accident scenarios are compared, showing that the configuration with the compressor will potentially produce larger amounts of flammable mixture in the laboratory. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect