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Thermal test of the insulation structure for LH2 tank by using the large experimental apparatus.

Author(s) : KAMIYA S., ONISHI K., KONSHIMA N., et al.

Type of article: Article

Summary

Conceptual designs of large mass LH2 (liquid hydrogen) storage systems, whose capacity is 50,000 m3, have been studied in the Japanese hydrogen project. World Energy Network (WE-NET). The study has concluded that their thermal insulation structures for the huge LH2 tanks should be developed. Their actual insulation structures comprise not only the insulation material but also reinforced members and joints. To evaluate their thermal performance correctly, a large test specimen including reinforced members and joints will be necessary. After verifying the thermal performance of a developed large experimental apparatus for measuring the thermal conductance of various insulation structures, two specimens are tested, a vacuum multilayer insulation (MLI) with a glass fiber reinforced plastic (GFRP) support and a vacuum solid insulation (microtherm) with joints. The thermal conductance measurements of specimens showed that thermal heat fluxes of MLI with a GFRP support and microtherm are 8 and 5.4 W/m2, respectively.

Details

  • Original title: Thermal test of the insulation structure for LH2 tank by using the large experimental apparatus.
  • Record ID : 2002-1178
  • Languages: English
  • Source: Cryogenics - vol. 40 - n. 11
  • Publication date: 2000/11

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