Hydrogen Jet fires in a full-scale road tunnel: Experimental results - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Hydrogen Jet fires in a full-scale road tunnel: Experimental results

Résumé

Hydrogen Fuel Cell Electric Vehicles (HFC EVs) represent an alternative to replace current internal combustion engine vehicles. The use of these vehicles with storage of compressed gaseous hydrogen (CGH2) or cryogenic liquid hydrogen (LH2) in confined spaces, such as tunnels, underground car parks, etc., creates new challenges to ensure the protection of people and property and to keep the risk at an acceptable level. Several studies have shown that confinement or congestion can lead to severe accidental consequences compared to accidents in an open atmosphere. It is therefore necessary to develop validated hazard and risk assessment tools for the behaviour of hydrogen in tunnels. The HYTUNNEL-CS project sponsored by the FCH-JU pursues this objective. Among the experiments carried out in support of the validation of the hydrogen safety tools, the CEA is conducting tests on large-scale jet fires in a full-scale tunnel geometry. The tests were performed in a decommissioned road tunnel in two campaigns. The first one with 50 liters type II tanks under a pressure of 20 MPa and the second one with 78 liters type IV tanks under 70 MPa. In both cases, a plate (on feet) representing its surface on the ground simulated the vehicle. Downward and upward gas discharges to simulate a rollover have been investigated with various release diameters. For the downward discharge, the orientation varied from normal to the road to a 45° rearward inclination. The first campaign took place under a concrete vault while the second under a rocky vault. Additional tests with the presence of a propane fire simulating a hydrocarbon powered vehicle fire were performed to study the interaction between the two reactive zones. In the paper, all the results obtained for the evolution of the hydrogen jet-fire size, the radiated heat fluxes and the temperature of the hot gases released in the tunnel are reported. Comparisons with the classical correlations from open field tests used in engineering models are also presented and conclusions are given as to their applicability.
Fichier principal
Vignette du fichier
ICHS 2023_133_VF.pdf (2.31 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

cea-04414623 , version 1 (24-01-2024)

Identifiants

  • HAL Id : cea-04414623 , version 1

Citer

Etienne Studer, Diana Forero, Sergey Kudriakov, Gilles Bernard-Michel, Didier Bouix, et al.. Hydrogen Jet fires in a full-scale road tunnel: Experimental results. ICHS 2023 - International Conference on Hydrogen Safety, Sep 2023, Quebec, Canada. pp.133. ⟨cea-04414623⟩
34 Consultations
43 Téléchargements

Partager

Gmail Facebook X LinkedIn More