Ser at Gexcon er engasert som uavhengig selskap på å finne årsak til hendelsen med ex/ brann i stasjonen til YX. Risikoanalyse og korrigerende tiltak vil bli iverksatt etter dette.
På sikt vil Hydrogen fremdeles være det beste alternativet for energibæring.

HYDROGEN SAFETY

 Home -> Proudcts and Services -> R&D

09 January 2018

Gexcon R&D is active within the global reseach community on hydrogen safety, with particular emphasis on CFD modelling of gaseous and liquid releases, jet fires and deflagrations.

 

Background

The development of applications that use hydrogen as energy carrier has accelerated in recent years. However, hydrogen is a highly reactive fuel, and safe handling and design is critical. Consequence modelling is a critical part of any risk assessment, and CFD tools such as FLACS have the potential to describe the relevant physical phenomena more accurate than engineering models (EMs).

 

Gexcon has extensive experience from R&D projects on hydrogen safety:

Hydrogen safety project (2001-2003) involving a large number of small-scale dispersion and explosion experiments.The EU-sponsored Network of Excellence HySafe (2004-2009).International Energy Agency (IEA) Hydrogen Implementation Agreement (HIA) Task 19 on Hydrogen Safety (2008-2010).International Energy Agency (IEA) Hydrogen Implementation Agreement (HIA) Task 31 on Hydrogen Safety (2011-2013).International Energy Agency (IEA) Hydrogen Implementation Agreement (HIA) Task 37 on Hydrogen Safety (2015-2018).Gexcon coordines the EU-funded project HySEA in Horizon-2020 (2015-2018).

 

 

FLACS-Hydrogen

Gexcon develops the dedicated CFD tool FLACS-Hydrogen for hydrogen safety applications. FLACS-Hydrogen has been commercially available for more than 10 years.

HySEA
 

Gexcon coordinates the HySEA project. The HySEA project receives funding from the Fuel Cells and Hydrogen 2 Joint Undertaking under grant agreement No. 671461. This Joint Undertaking receives support from the European Union’s Horizon 2020 research and innovation programme and United Kingdom, Italy, Belgium and Norway. As part of the HySEA project, Gexcon developes a prototype for a new version of FLACS-Hydrogen (Hisken, 2016). The first beta version of the new verion of FLACS-Hydrogen is scheduled for December 2017 or early 2018. This version will include several fundamental changes to the model system, including a new turbulence model, a new correlation for turbulent burning velocity that includes the effect of the stretch-rate Markstein number, and a transport equation for flame folding.

 

 

 

Validation

Gexcon has carried out extensive validation work for FLACS-Hydrogen, including release, dispersion and explosion scenarios.

Deflagration-to-detonation transition

 

The possibility of DDT represents a significant threat in industries that handle flammable mixtures, and especially for highly reactive gases such as hydrogen and acetylene. Gexcon has implemented a simplified model in FLACS that can indicate whether DDT is likely to occur.

 

 

3D Risk management for hydrogen applications

Gexcon R&D has also been involved in the development of methodology for quantitative risk analysis (QRA) for hydrogen applications. Such QRAs represent particular challenges due to a large difference in properties of hydrogen and more conventional fuels, such as natural gas or propane: reactivity, flammability limits, buoyancy and transport properties. Case studies have been carried out in tunnels, workshops, and refuelling stations, as well as for hythane (hydrogen and methane mixtures).

 

 Previous  Index Next 

R&D

Research and DevelopmentFLACS DevelopmentFLACS MaintenanceFLACS ValidationResearch ProjectsDispersion ModellingExplosion ModellingHydrogen SafetyFire ModellingWind Energy

Other Departments