Identification of Building Applications for a Variable-Conductance Insulation

    Research output: NRELTechnical Report


    Recent experiments have confirmed the feasibility of controllable, reversible disabling of a vacuum insulation panel, which may result in the development of energy-efficient building envelope components. These components could extend the managed energy exchange through the building envelope from about 30% (typical with fenestration systems in commercial buildings), to as much as 90% of the grosswall and roof areas. Further investigation will be required to optimize the thermal response and the magnitude of the R-value swing (from a difference between insulating and conducting insulating values of 4 to as high as a factor of 100). The potential for energy reduction by using the variable-conductance insulation in the building envelope is discussed, and other potential buildingapplications are mentioned.
    Original languageAmerican English
    Number of pages14
    StatePublished - 1992

    NREL Publication Number

    • NREL/TP-441-4824


    • energy-efficient
    • vacuum insulation panel
    • variable-conductance insulation


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