Hydrogen Safety by Design: Exclusion of Flame Blow-Out from a TPRD

• DOI: 10.3390/hydrogen5020016
• Publication Date: 2024-05-16T07:24:48Z
• Authors: Mina Kazemi; Sile Brennan; Vladimir Molkov
• Keywords: Boiler blowdown

Onboard hydrogen storage tanks are currently fitted with thermally activated pressure relief devices (TPRDs), enabling to blowdown in the event of fire. For release diameters below critical diameter, flame from TPRD may blow-out during a drop. Flame blow-outs pose safety concern for an indoor or covered environment, e.g., garage carpark, where can accumulate and deflagrate. This study describes application validated computational fluid dynamics (CFD) model simulate dynamic behaviour designed exclude its blow-out. The replicates real scenario. tank through two TPRDs different nozzle geometries is presented. Simulations confirm single-diameter 0.5 mm blowdown, while double-diameter successfully excludes at which process initiated was predicted.