Ricerc@Sapienza

Hydrogen is becoming an attractive alternative for energy storage and transportation, because of the elevated energy content per unit of mass and possibility to have zero carbon-emission vehicles. For these reasons, hydrogen's share in global market is expected to grow substantially in the coming years. Today, hydrogenfueled buses and cars are already available, and several refueling stations are operating in different countries around the world.

Hydrogen refuelling stations carry the risk of hydrogen leakage from flanges, holes, broken pipes, etc., and the possibility of ignition is high due to the low minimum ignition energy of hydrogen. The length of these hydrogen jet flames may have an impact on damage and should be included in risk assessments. The risk assessment of typical hydrogen refuelling infrastructure is highly dependent on separation distances. These distances are estimated partially by jet flame lengths.