STP544: Some Recent Experimental Data on Glass Fiber Insulating Materials and Their Use for a Reliable Design of Insulations at Low Temperatures

    Fournier, D
    Chief, Physical Laboratory, and Chief, Heat Transfer Section, SAINT-GOBAIN Industries, Centre de Recherches Industrielles, RANTIGNY, France

    Klarsfeld, S
    Chief, Physical Laboratory, and Chief, Heat Transfer Section, SAINT-GOBAIN Industries, Centre de Recherches Industrielles, RANTIGNY, France

    Pages: 20    Published: Jan 1974


    Abstract

    Reliable values of apparent thermal conductivity have been obtained under steady-state conditions and at low temperatures (between liquid nitrogen and room temperatures) together with air flow permeability (defined according to the Darcy law) of glass fiber materials. Both sets of data were used simultaneously to calculate actual conditions of heat transfer in porous media from recent theoretical analysis. It is shown by computation of filtration Rayleigh Number from these results that it is possible to design insulating structures to minimize convective heat transfer.

    Keywords:

    thermal insulation, heat transmission, thermal conductivity, glass fibers, heat transfer, convection, porous materials, permeability, guarded hot plate, dimensional analysis, low temperature tests


    Paper ID: STP34781S

    Committee/Subcommittee: C16.30

    DOI: 10.1520/STP34781S


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