Hydrogen Jet Fire from a Thermally Activated Pressure Relief Device (TPRD) from Onboard Storage in a Naturally Ventilated Covered Car Park
| Autor: | Vladimir Molkov, Harem Hussein, Sile Brennan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
hydrogen jet fire
Jet (fluid) Science (General) Hydrogen onboard storage Nuclear engineering TPRD design chemistry.chemical_element 02 engineering and technology Ceiling (cloud) 010402 general chemistry 021001 nanoscience & nanotechnology Research findings 01 natural sciences 0104 chemical sciences Q1-390 Hydrogen safety chemistry 13. Climate action blowdown Environmental science covered car park 0210 nano-technology hydrogen safety Boiler blowdown |
| Zdroj: | Hydrogen Hydrogen, Vol 2, Iss 18, Pp 343-361 (2021) Volume 2 Issue 3 Pages 18-361 |
| ISSN: | 2673-4141 |
| Popis: | Hydrogen jet fires from a thermally activated pressure relief device (TPRD) on onboard storage are considered for a vehicle in a naturally ventilated covered car park. Computational Fluid Dynamics was used to predict behaviour of ignited releases from a 70 MPa tank into a naturally ventilated covered car park. Releases through TPRD diameters 3.34, 2 and 0.5 mm were studied to understand effect on hazard distances from the vehicle. A vertical release, and downward releases at 0°, 30° and 45° for TPRD diameters 2 and 0.5 mm were considered, accounting for tank blowdown. direction of a downward release was found to significantly contribute to decrease of temperature in a hot cloud under the ceiling. Whilst the ceiling is reached by a jet exceeding 300 °C for a release through a TPRD of 2 mm for inclinations of either 0°, 30° or 45°, an ignited release through a TPRD of 0.5 mm and angle of 45° did not produce a cloud with a temperature above 300 °C at the ceiling during blowdown. The research findings, specifically regarding the extent of the cloud of hot gasses, have implications for the design of mechanical ventilation systems. |
| Databáze: | OpenAIRE |
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