![]() In both cases, there were no details about the type of hydrogen – gaseous or liquid. ZeroAvia has already entered into two collaborations around hydrogen infrastructure on the ground this year, in March with Fortum and in February with Shell and Rotterdam Airport. There is also a system designed for one tonne per day. Small liquefaction systems achieve less than 50 kilograms per day, while a larger system can liquefy around 100 kilograms of hydrogen per day. However, hydrogen is only liquid at temperatures below -253 degrees Celsius – so the tanks must be actively cooled or very well insulated.Īccording to the statement, Absolut Hydrogen has various systems for LH2 that can cover different volume requirements. Moreover, since the pressure tanks are cylindrical and the tanks for liquids can be designed more freely and integrated into the aircraft, LH2 would allow for a larger aircraft with higher passenger capacity and greater range. The latter is scheduled for take-off in 2027.Ĭompared to gaseous hydrogen (even under high pressure of up to 700 bar), the volumetric energy density of liquid hydrogen, also known as LH2, is significantly higher. While ZeroAvia’s first certified powertrains for an aircraft with up to 19 seats will run on gaseous hydrogen, the modular powertrain for the ZA2000 40-80 seat aircraft will require liquid hydrogen. Later, they will “explore the technological developments, operational concept, safety procedures and standards for large-scale deployment to deliver liquid hydrogen on aircraft.” According to the ZeroAvia announcement, the partners will work together to build and demonstrate liquid hydrogen liquefaction and storage in an airport context. Grenoble-based Absolut Hydrogen develops liquid hydrogen systems for mobility in the air, at sea and on land. ZeroAvia, specialising in electric aircraft propulsion, will work with Absolut Hydrogen to evaluate liquid hydrogen production, storage and refuelling at airports. ![]() Absolut Hydrogen Electric aircraft FCEV Fuel Cell Hydrogen ZeroAvia
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