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Two-dimensional thermal analysis of liquid hydrogen tank insulation
Istanbul Technical University, Energy Institute.
Istanbul Technical University, Energy Institute.ORCID iD: 0000-0002-7431-5115
Istanbul Technical University, Energy Institute.
2009 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 34, p. 6357-6363Article in journal (Refereed) Published
Abstract [en]

Liquid hydrogen (LH2) storage has the advantage of high volumetric energy density, whileboil-off losses constitute a major disadvantage. To minimize the losses, complicatedinsulation techniques are necessary. In general, Multi Layer Insulation (MLI) and a Vapor-Cooled Shield (VCS) are used together in LH2 tanks. In the design of an LH2 tank with VCS,the main goal is to find the optimum location for the VCS in order to minimize heatleakage. In this study, a 2D thermal model is developed by considering the temperaturedependencies of the thermal conductivity and heat capacity of hydrogen gas. The developedmodel is used to analyze the effects of model considerations on heat leakagepredictions. Furthermore, heat leakage in insulation of LH2 tanks with single and doubleVCS is analyzed for an automobile application, and the optimum locations of the VCS forminimization of heat leakage are determined for both cases.

Place, publisher, year, edition, pages
2009. Vol. 34, p. 6357-6363
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:uu:diva-380298OAI: oai:DiVA.org:uu-380298DiVA, id: diva2:1299082
Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26

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