Modelling of Fireballs Generated After the Catastrophic Rupture of Hydrogen Tanks

The interest towards hydrogen skyrocketed in the last years. Thanks to its potential as an energy carrier, hydrogen will be soon handled in public and densely populated areas. Therefore, accurate models are necessary to predict the consequences of unwanted scenarios. These new models should be emplo...

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Main Authors: Leonardo Giannini, Gabriele Tincani, Giulia Collina, Ernesto Salzano, Valerio Cozzani, Federico Ustolin
Format: Article
Language:English
Published: AIDIC Servizi S.r.l. 2023-11-01
Series:Chemical Engineering Transactions
Online Access:https://www.cetjournal.it/index.php/cet/article/view/13725
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author Leonardo Giannini
Gabriele Tincani
Giulia Collina
Ernesto Salzano
Valerio Cozzani
Federico Ustolin
author_facet Leonardo Giannini
Gabriele Tincani
Giulia Collina
Ernesto Salzano
Valerio Cozzani
Federico Ustolin
author_sort Leonardo Giannini
collection DOAJ
description The interest towards hydrogen skyrocketed in the last years. Thanks to its potential as an energy carrier, hydrogen will be soon handled in public and densely populated areas. Therefore, accurate models are necessary to predict the consequences of unwanted scenarios. These new models should be employed in the consequence analysis, a phase of risk assessment, and thus aid the selection, implementation, and optimization of effective risk-reducing measures. This will increase safety of hydrogen technologies and therefore favour their deployment on a larger scale. Hydrogen is known to be an extremely flammable gas with a low radiation flame compared to hydrocarbons. However, luminous fireballs were generated after the rupture of both compressed gaseous and liquid hydrogen tanks in many experiments. Moreover, it was demonstrated that conventional empirical correlations, initially developed for hydrocarbon fuels, underestimate both dimension and duration of hydrogen fireballs recorded during small-scale tests (Ustolin and Paltrinieri, 2020). The aim of this study is to obtain an analysis of hydrogen fireballs to provide new critical insights for consequence analysis. A comparison among different correlations is conducted when predicting fireball characteristics during the simulation of past experiments where both gaseous and liquid hydrogen tanks were intentionally destroyed. All the models employed in this study are compared with the experimental results for validation purposes. Specific models designed for hydrogen can support the design of hydrogen systems and increasing their safety and promote their future distribution.
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spelling doaj.art-e9c7f9fb12ef476a99a160cb7779b99c2023-11-14T23:47:46ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162023-11-01104Modelling of Fireballs Generated After the Catastrophic Rupture of Hydrogen TanksLeonardo GianniniGabriele TincaniGiulia CollinaErnesto SalzanoValerio CozzaniFederico UstolinThe interest towards hydrogen skyrocketed in the last years. Thanks to its potential as an energy carrier, hydrogen will be soon handled in public and densely populated areas. Therefore, accurate models are necessary to predict the consequences of unwanted scenarios. These new models should be employed in the consequence analysis, a phase of risk assessment, and thus aid the selection, implementation, and optimization of effective risk-reducing measures. This will increase safety of hydrogen technologies and therefore favour their deployment on a larger scale. Hydrogen is known to be an extremely flammable gas with a low radiation flame compared to hydrocarbons. However, luminous fireballs were generated after the rupture of both compressed gaseous and liquid hydrogen tanks in many experiments. Moreover, it was demonstrated that conventional empirical correlations, initially developed for hydrocarbon fuels, underestimate both dimension and duration of hydrogen fireballs recorded during small-scale tests (Ustolin and Paltrinieri, 2020). The aim of this study is to obtain an analysis of hydrogen fireballs to provide new critical insights for consequence analysis. A comparison among different correlations is conducted when predicting fireball characteristics during the simulation of past experiments where both gaseous and liquid hydrogen tanks were intentionally destroyed. All the models employed in this study are compared with the experimental results for validation purposes. Specific models designed for hydrogen can support the design of hydrogen systems and increasing their safety and promote their future distribution.https://www.cetjournal.it/index.php/cet/article/view/13725
spellingShingle Leonardo Giannini
Gabriele Tincani
Giulia Collina
Ernesto Salzano
Valerio Cozzani
Federico Ustolin
Modelling of Fireballs Generated After the Catastrophic Rupture of Hydrogen Tanks
Chemical Engineering Transactions
title Modelling of Fireballs Generated After the Catastrophic Rupture of Hydrogen Tanks
title_full Modelling of Fireballs Generated After the Catastrophic Rupture of Hydrogen Tanks
title_fullStr Modelling of Fireballs Generated After the Catastrophic Rupture of Hydrogen Tanks
title_full_unstemmed Modelling of Fireballs Generated After the Catastrophic Rupture of Hydrogen Tanks
title_short Modelling of Fireballs Generated After the Catastrophic Rupture of Hydrogen Tanks
title_sort modelling of fireballs generated after the catastrophic rupture of hydrogen tanks
url https://www.cetjournal.it/index.php/cet/article/view/13725
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