STP1116

    Interlaboratory Comparison of the Apparent Thermal Conductivity of a Fibrous Batt and Four Loose-Fill Insulations

    Published: Jan 1991


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    Abstract

    An interlaboratory comparison of measurements of the apparent thermal conductivities of four loose-fill insulations was conducted according to ASTM Standard Practice C 687 in order to prepare a revised statement of precision and bias. The apparatus used included one guarded hot plate, one thin-heater apparatus, and eight heat-flow meters. All specimens were tested at a mean temperature of 24 °C (75 °F). Test results for fibrous glass blanket were used to characterize the basic imprecision (numerical measure of precision) of the test instruments. The 2σ imprecisions of measurement of apparent thermal conductivity were 2.8% for fibrous glass blanket, 5.8% for cellulose, 9.4% for unbonded glass fiber, 10.5% for mineral wool, and 5.0% for perlite.

    Keywords:

    apparent thermal conductivity, bias, blanket, cellulose, fibrous glass, insulation, loose fill, mineral wool, perlite, precision, round robin, thermal resistance


    Author Information:

    McCaa, DJ
    CertainTeed Corporation, Blue Bell, PA

    Smith, DR
    Chemical Eng., National Institute of Standards and Technology, Boulder, CO

    Desjarlais, A
    HolometrixOak Ridge National LaboratoryOwens-Corning FiberglasKnauf FiberglassFiberglas Canada, Pt.NAHB National Research CenterManville Sales CorporationNational Institute of Standards and Technology, CambridgeOak RidgeGranvilleShelbyvilleEdwardUpper MarlboroDenverGaithersburg, MATNOHINOntarioMDCOMD

    Graves, RS
    HolometrixOak Ridge National LaboratoryOwens-Corning FiberglasKnauf FiberglassFiberglas Canada, Pt.NAHB National Research CenterManville Sales CorporationNational Institute of Standards and Technology, CambridgeOak RidgeGranvilleShelbyvilleEdwardUpper MarlboroDenverGaithersburg, MATNOHINOntarioMDCOMD

    Mumaw, J
    HolometrixOak Ridge National LaboratoryOwens-Corning FiberglasKnauf FiberglassFiberglas Canada, Pt.NAHB National Research CenterManville Sales CorporationNational Institute of Standards and Technology, CambridgeOak RidgeGranvilleShelbyvilleEdwardUpper MarlboroDenverGaithersburg, MATNOHINOntarioMDCOMD

    Noonan, P
    HolometrixOak Ridge National LaboratoryOwens-Corning FiberglasKnauf FiberglassFiberglas Canada, Pt.NAHB National Research CenterManville Sales CorporationNational Institute of Standards and Technology, CambridgeOak RidgeGranvilleShelbyvilleEdwardUpper MarlboroDenverGaithersburg, MATNOHINOntarioMDCOMD

    Scott, JA
    HolometrixOak Ridge National LaboratoryOwens-Corning FiberglasKnauf FiberglassFiberglas Canada, Pt.NAHB National Research CenterManville Sales CorporationNational Institute of Standards and Technology, CambridgeOak RidgeGranvilleShelbyvilleEdwardUpper MarlboroDenverGaithersburg, MATNOHINOntarioMDCOMD

    Sikund, R
    HolometrixOak Ridge National LaboratoryOwens-Corning FiberglasKnauf FiberglassFiberglas Canada, Pt.NAHB National Research CenterManville Sales CorporationNational Institute of Standards and Technology, CambridgeOak RidgeGranvilleShelbyvilleEdwardUpper MarlboroDenverGaithersburg, MATNOHINOntarioMDCOMD

    Troyer, R
    HolometrixOak Ridge National LaboratoryOwens-Corning FiberglasKnauf FiberglassFiberglas Canada, Pt.NAHB National Research CenterManville Sales CorporationNational Institute of Standards and Technology, CambridgeOak RidgeGranvilleShelbyvilleEdwardUpper MarlboroDenverGaithersburg, MATNOHINOntarioMDCOMD

    Zarr, R
    HolometrixOak Ridge National LaboratoryOwens-Corning FiberglasKnauf FiberglassFiberglas Canada, Pt.NAHB National Research CenterManville Sales CorporationNational Institute of Standards and Technology, CambridgeOak RidgeGranvilleShelbyvilleEdwardUpper MarlboroDenverGaithersburg, MATNOHINOntarioMDCOMD


    Paper ID: STP16368S

    Committee/Subcommittee: C16.16

    DOI: 10.1520/STP16368S


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