Liquefied hydrogen storage method and liquefied hydrogen storage system

摘要

Problem to be solved: to provide a liquefied hydrogen storage method and a liquefied hydrogen storage system capable of reducing the amount of liquefied hydrogen consumed by vaporization when the temperature of the liquefied hydrogen tank is cooled to the temperature at which liquefied hydrogen is stored.Solution: a liquid hydrogen storage method for storing liquefied hydrogen in a liquefied hydrogen tank comprising an oxygen removal step for removing oxygen in a liquid hydrogen tank using nitrogen and a liquid hydrogen introduction process for introducing liquid hydrogen into a liquefied hydrogen tank that has been removed from oxygen Before introducing liquefied hydrogen into the liquefied hydrogen tank, the inside of the liquefied hydrogen tank is cooled beforehand.Diagram