This report presents the conceptual design of a membrane type cargo containment system for a very large liquefied hydrogen carrier that can efficiently transport liquid hydrogen with a temperature of -253 degrees Celsius while minimizing vaporization with a capacity of more than 150,000 cubic meters.
This report presents the conceptual design of a membrane-type cargo containment system (CCS) for a very large liquefied hydrogen carrier with a cargo capacity exceeding 150,000 m³. The proposed CCS is intended to enable the efficient transportation of liquid hydrogen at cryogenic temperatures while minimizing cargo vaporization during operation.
The membrane-type CCS consists of a primary barrier for cargo containment, a secondary barrier for protection of the ship structure in the event of leakage, and a highly efficient insulation system designed to reduce heat ingress from the surroundings.
The primary and secondary barriers incorporate design features that accommodate thermal contraction associated with cryogenic service conditions and are manufactured from metallic materials suitable for liquid hydrogen applications. The insulation system combines multiple insulation technologies to achieve both structural functionality and enhanced thermal performance under extreme cryogenic conditions.
To facilitate construction and scalability, the CCS adopts a modular insulation panel concept. Standardized insulation panels can be repeatedly arranged to accommodate different cargo tank capacities while supporting efficient fabrication, transportation, and installation processes.
The overall tank configuration is designed to make effective use of the available hull volume while incorporating geometric features intended to improve operational performance and reduce the effects of liquid motion within the cargo tank. Design guidelines have also been developed to support the preliminary sizing and arrangement of cargo tanks based on the proposed CCS concept.
The developed concept provides a practical foundation for the future application of membrane-type liquid hydrogen cargo containment technology in large-scale hydrogen transportation.
Due to the sensitive nature of the technical information included, the full deliverable is not publicly available.
