2021年10月22日 · This study aims at the understanding of thermal behaviour of a tank-TPRD system in a fire and the development of a methodology to optimise the TPRD diameter to prevent both tank rupture in a fire and allow parking of HPVs in confined spaces like garages and maintenance shops without risk of civil structure destruction by PPP.

This thermal pressure relief device (TPRD) is designed to clear up tanks and vessels when overheating. A glass ampoule is destroyed when the reaction temperature (typically 110° C) is reached, thus releasing the hydrogen from the tank out through a safety vent in a very short time.

2023年9月15日 · Analytical and numerical modelling campaigns were performed to study hazards of unignited and ignited hydrogen releases from a vehicle in a real underground parking. TPRD diameter to prevent flammable mixture formation during upward release was determined using similarity law for hydrogen concentration decay along jet centreline.

The regulations require TPRD to be installed on hydrogen onboard tanks to prevent its catastrophic rupture in a fire. In case of high fire temperatures TPRD must be activated and it is intended to provide a release of hydrogen from the tank before its rupture.

The exclusion of rupture of the studied Type IV tanks with NWP=70 MPa can be provided using a TPRD diameter of 0.75 mm for 244 L tank, 0.5 mm for 62.4 L tank, and 0.45 mm for 36 L tank

PRD Triggering Hydrogen vehicle containers require PRDs primarily to protect against impinging fires. Modern composite tanks are good thermal insulators and they weaken at high temperatures. Fuel pressure is not expect to increase significantly during an impinging fire. A container may not be filled with hydrogen at the time of the fire.

2023年6月10日 · Post TPRD operation, maximum thermal threat applied at hydrogen tank surface ranges from 60 kW/m 2 to 70 kW/m 2. This indicates that the prior and post TPRD operation conditions are within those of UN GTR#13 fire test (see red region is …

The Thermal and Pressure Relief Device (TPRD) 016280-K is used to secure gas storage tanks in the event of a fire by ensuring rapid and spatially targeted degassing at elevated temperatures whilst preventing the tanks from bursting.

2021年10月22日 · This study aims at the understanding of thermal behaviour of a tank-TPRD system in a fire and the development of a methodology to optimise the TPRD diameter to prevent both tank rupture in a fire and allow parking of HPVs in confined spaces like garages and maintenance shops without risk of civil structure destruction by PPP.

The performance of a composite hydrogen storage tank with TPRD in an engulfing fire is studied. The non-adiabatic tank blowdown model, including in fire conditions, using the under-expanded jet theory is described.