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Thermal Analysis of a Liquid Hydrogen Vessel with Multi-Layer-Insulation and Vapor-Cooled Shield  

Jung, Il-Kwon (Graduate School of Kookmin Univ.)
Kang, Byung-Ha (School of Mechanical & Automotive Engineering, Kookmin Univ.)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.16, no.3, 2005 , pp. 284-289 More about this Journal
Abstract
Thermal analysis of cryogenic-capable vessels with insulations have been carried out to store liquid hydrogen($LH_2$). The combined insulations of MLI(Multi-Layer Insulation) and VCS(Vapor-Cooled Shield) under high vacuum are considered in the analysis for various volumes of vessels. Vapor-Cooled Shields(VCS) are installed at cylinder wall as well as disc side of the $LH_2$ vessels. The results indicate that optimal distribution of boiloff vapor from $LH_2$ vessel into two sides of VCS exists based on the evaporation loss. As the volume of $LH_2$ vessel is increased, mass flow rate of boiloff is increased while the evaporation loss per unit volume is decreased.
Keywords
$LH_2$ vessel; Multi-Layer-Insulation; Vapor-Cooled Shield;
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