Abstract
The storage of hydrogen in its liquid phase has been limited in duration due to the thermal performance constraints of conventional liquid hydrogen containers available. Conventional liquid hydrogen containers lose hydrogen because of their relatively high heat leakage and variations in usage pattern of hydrogen due to shutdowns. Local regulations also discourage venting of hydrogen. Long-term storage of liquid hydrogen without product loss is usually accomplished using liquid nitrogen sacrificial shields. A new low heat leakage container developed and patented recently will extend the storage time of liquid hydrogen by 500%. The principle of operation of the transient shields, which makes the extraordinary performance of this container feasible, is described in this paper. Also covered is the impact of this new container on present applications of hydrogen and the new opportunities afforded to liquid hydrogen in the world hydrogen market.
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