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A vacuum insulated panel (VIP) is a form of thermal insulation consisting of a gas-tight enclosure surrounding a rigid core, from which the air has been evacuated. It is used in building construction, refrigeration units, and insulated shipping containers to provide better insulation performance than conventional insulation materials. [1] [2]
Krypton, which is considerably more expensive, is not generally used except to produce very thin double glazing units or extremely high performance triple-glazed units. Xenon has found very little application in IGUs because of cost. [11] Vacuum technology is also used in some non-transparent insulation products called vacuum insulated panels.
Nisson & Dutt (1985) suggest that a house might be described as "superinsulated" if the cost of space heating is lower than that of water heating. [ 1 ] Besides the meaning mentioned above of high level of insulation, the terms superinsulation and superinsulating materials are in use for high R/inch insulation materials like vacuum insulation ...
Glazed systems usually have a transparent top sheet and insulated side and back panels to minimize heat loss to ambient air. The absorber plates in modern panels can have absorptivity of more than 93%. Glazed Solar Collectors (recirculating types that are usually used for space heating).
But the effectiveness of vacuum insulation is also limited by the edge of the material, since the edge of the vacuum panel can form a thermal bridge which leads to a reduction of the effectiveness of the vacuum insulation. The effectiveness of the vacuum insulation is also related to the area of the vacuum panels.
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