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Vacuum insulation panels.

Author(s) : REUTER R., SEXTL G.

Summary

Silica vacuum insulation panels are made by pressing silica into a board, then sealing under vacuum into a gas and watertight film envelope. At approximately 100 pascals internal pressure the thermal conductivity is 6-7 milliwatts/m.K. Panel size is a maximum of 800 x 600 x 25 mm. Lifetime tests simulating 15 years show only a small increase to 8 milliwatts/m.K thermal conductivity and no other deterioration. Panels can be combined with the normal foamed polyurethane in the insulation of refrigerators and freezers, being attached to the metal casing before foaming. A commercial home freezer is already available with this construction, foaming being by R134a. The benefits include up to 25% energy saving, a reduction in foaming agent required and a reduction in global warming CO2. There is an increase in the initial cost. D.W.H.

Details

  • Original title: Vacuum insulation panels.
  • Record ID : 1994-3451
  • Languages: English
  • Subject: Environment
  • Publication date: 1993/09/28
  • Source: Source: ORNL/Proc. 1993 non-fluorocarbon Insul. Refrig. Air-Cond. Technol. Workshop, Wiesbaden
    ORNL-6805; 131-139; 6 fig.; 1 tabl.
  • Document available for consultation in the library of the IIR headquarters only.

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