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Hydrogen storage tank (for aircraft)

6-7

Technology Description

Hydrogen aircraft designs would require that liquified hydrogen be stored below -250°C in storage tanks with a vacuum layer (to minimise heat transfer by radiation) in between other lightweight but highly durable and high-strength insulating material layers. Fuel delivery systems would need to enable the temperature of the liquified hydrogen to gradually increase and pressure to decrease to deliver gaseous hydrogen at a precise window of temperature and pressure to the engines or fuel cells.
Developing the infrastructure to safely refuel hydrogen aircraft is ongoing but difficult. One specific solution being investigated is the use of removable and refillable hydrogen tanks, which could be prepared offsite, and transferred to the aircraft before take-off. This proposed solution could reduce fuelling times, and increase ease of handling.

Relevance for Net Zero

All of the three hydrogen aircraft designs mentioned in this guide require innovative cryogenic fuel storage and delivery methods, low-cost and lightweight cryogenic tanks, and redesigned airframes to accommodate them.

Key Countries

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