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>> In the face of the world’s growing energy storage needs, liquid hydrogen offers a high energy densitysolution for the storage and transport of energy throughout society. A 5 L liquid hydrogen storage tank has beendesigned, fabricated and tested to investigate boil-off rate of liquid hydrogen. As the insulation plays a key roleon the cryogenic vessels, various insulation methods have been employed. To reduce heat conduction loss, theepoxy resin-based insulation supports G-10 were used. To minimize radiation heat loss, vapor cooled radiationshield, multi-layer insulation, and high vacuum were adopted. Mass flow meter was used to measure boil-off rate of the 5 L cryogenic vessel. A series of performance tests were done for liquid nitrogen and liquid hydrogento compare with design parameters, resulting in the boil-off rate of 1.7%/day for liquid nitrogen and 16.8%/dayfor liquid hydrogen at maximum.Key words : Liquid Hydrogen(액체수소), Cryogenic Storage Vessel(극저온 저장용기), Insulation(단열), Boil-offRate(증발율) |
