A Large Experimental Apparatus for Measuring the Thermal Conductance of LH2 Storage Tank Insulations.

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  • KAMIYA Shouji
    Kawasaki Heavy Industries Ltd. Kanto Technical Institute Kobe University of Mercantile Marine
  • OHNISHI Katsu
    Kawasaki Heavy Industries Ltd. Kanto Technical Institute
  • KAWAGOE Eiji
    Kawasaki Heavy Industries Ltd. Kanto Technical Institute
  • NISHIGAKI KAZU
    Kobe University of Mercantile Marine

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  • 液体水素貯槽用断熱性能試験装置の開発
  • エキタイ スイソチョソウヨウ ダンネツ セイノウ シケン ソウチ ノ カイハツ

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Abstract

In the Japanese hydrogen project, World Energy Network (WE-NET) for realizing reusable clean energy systems using hydrogen, conceptual designs of large-mass liquid hydrogen storage systems for ground and transportation tanks have been studied. For completing such large storage systems, of which scales would reach to that of commercialized liquid natural gas (LNG) facilities, this study has concluded that thermal insulation structures satisfying large-tank requirements should be developed. In order to evaluate thermal performances of various devised insulation structures between 20 and 300K, we have developed a large experimental apparatus with a double-guarded flat plate boil-off calorimeter method. This apparatus can test various kinds of specimens with allowable dimensions; diameter 1.2m, up to thickness 0.3m, to provide the thermal data needed for designing a full-scale storage tank. This paper describes the abstract of the devised large-mass liquid hydrogen storage tank, the experimental errors of the experimental apparatus to be considered, and the results of the background and heater tests for evaluating its performance. The background test result showed that heat transfer to the measuring vessel was 0.1W, small enough to satisfy apparatus performance requirements.

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