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EVACUATED LOAD BEARING INSULATION SYSTEM FOR SPHERICAL LNG TANKS.

Author(s) : BRENDENG E.

Summary

AN EVACUATED LOAD BEARING INSULATION SYSTEM HAS BEEN USED TO INSULATE A SPHERICAL TEST TANK OF A 2 M DIAMETER. THE HEAT CONDUCTANCE FOR THE SYSTEM WAS ESTABLISHED BY MEASUREMENT OF THE BOIL-OFF, AT DIFFERENT PRESSURESIN THE INSULATION. LIQUID NITROGEN WAS USED IN THE TANK FOR THESE TESTS. THE DESIGN OF THE VACUUM SEAL DID NOT PROVE SATISFACTORY. POROSITY IN THE WELDS MADE IT IMPOSSIBLE TO REACH A SUFFICIENTLY LOW PRESSURE IN THE INSULATION AND THUS ACORRESPONDINGLY LOW THERMAL CONDUCTANCE ; AN INADEQUATE FLEXIBILITY CAUSED LOCAL CRUSHING OF THE INSULATION STRUCTURE. NEVERTHELESS, A GOOD CORRELATION WAS OBTAINED BETWEEN CONDUCTANCE MEASUREMENTS AND PREDICTIONS.

Details

  • Original title: EVACUATED LOAD BEARING INSULATION SYSTEM FOR SPHERICAL LNG TANKS.
  • Record ID : 1991-0988
  • Languages: English
  • Publication date: 1989/10/17
  • Source: Source: Proc. LNG 9 GNL, Nice
    vol. 2; sess. 4; n. 6; 10 p.; 5 fig.; 2 tabl.; 3 ref.
  • Document available for consultation in the library of the IIR headquarters only.

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