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MAN Cryo develops marine fuel-gas system for liquefied hydrogen

Fuel-gas system for liquefied hydrogen

The system is the first marine-system design that secures preliminary approval in principle

MAN Cryo, a wholly owned subsidiary of MAN Energy Solutions, developed the Liquid Hydrogen Marine Fuel Gas System design in-house at its headquarters in Gothenburg, in close cooperation with the shipowner, Fjord1, and ship designer, Multi Maritime, in Norway.

Multi Maritime’s hydrogen vessel design for Fjord1, including the fully integrated ‘MAN Cryo – Hydrogen Fuel Gas System’, has been granted preliminary approval in principle, “AIP”, by the DNV-GL Classification society.

Dr Uwe Lauber, CEO of MAN Energy Solutions, said: “Winning this approval is a significant development for a number of reasons. As a solution for vessels employed on relatively short maritime routes, such as ferries, this technology is a world-first and showcases our company’s ability to deliver genuinely innovative solutions. Furthermore, Hydrogen is a clean fuel whose profile fits perfectly with the general desire within the industry to move towards cleaner technology. The possibilities for this technology are varied and exciting.”

The system has a scalable design that allows easy adaptation for different shipping types, sizes and conditions. The design is suited for both above- and below-deck applications, offering ship designers the flexibility to optimise their designs in relation to efficiency, and to cargo or passenger space.

Liquefied hydrogen has a temperature of -253° Celsius and is one of the absolutely coldest cryogenic gases there is, which places system components and materials under extreme stresses. Another design challenge was hydrogen’s explosive nature, with the MAN Cryo engineering team accordingly placing top priority on safety.

Once liquefied, hydrogen is reduced to 1/800th of its volume, compared to that of its gas phase, facilitating a more-efficient distribution. As a fuel, hydrogen does not release any CO2 and can play an important role in the transition to a clean, low-carbon, energy system. Liquefied hydrogen can be used to charge batteries for electrical propulsion via fuel-cell technology.

MAN Cryo has long experience with cryogenic gases and solutions for storage and distribution. The company has also made numerous hydrogen installations over the years on land that, in combination with its extensive experience from marine fuel-gas systems for LNG, have been invaluable when designing the new system.

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