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  • BS 874-3.1:1987

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Methods for determining thermal insulating properties. Tests for thermal transmittance and conductance Guarded hot-box method

    Available format(s):  Hardcopy, PDF

    Superseded date:  23-11-2007

    Language(s):  English

    Published date:  27-02-1987

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Committees responsible
    Method
    0 Introduction
    1 Scope
    2 Definitions
    3 Principle
    4 Apparatus
    5 Test elements
    6 Test procedure
    7 Expression of results
    8 Test report
    Appendices
    A The use of a hot-box apparatus to determine the heat
       transfer coefficient of a test element smaller than
       the metering area
    B Heat transfer at surfaces
    C Control of the guard space environment
    Figures
    1 Sketch of a guarded hot-box apparatus
    2 Example of placement of thermocouples for assessment
       of surface temperatur
    3 Thermopile connections
    4 Temperature measuring positions on each side of the
       metering area of the test element

    Abstract - (Show below) - (Hide below)

    Determination of steady-state thermal transmittance and conductance of large building elements such as walls, roofs and floors using a guarded hot-box apparatus.

    General Product Information - (Show below) - (Hide below)

    Committee B/540
    Development Note Supersedes 85/71639 DC. (06/2004) Supersedes BS 874(1983). (07/2004) Supersedes BS 874(1973). (12/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 6993-2:1990 Thermal and radiometric properties of glazing Method for direct measurement of U-value (thermal transmittance)
    BS 874-3.2:1990 Methods for determining thermal insulating properties. Tests for thermal transmittance and conductance Calibrated hot-box method
    BS 6993-1:1989 Thermal and radiometric properties of glazing Method for calculation of the steady state U-value (thermal transmittance)
    ASTM C 1199 : 2014 : REDLINE Standard Test Method for Measuring the Steady-State Thermal Transmittance of Fenestration Systems Using Hot Box Methods
    BS 4745:2005 Determination of the thermal resistance of textiles. Two-plate method: fixed pressure procedure, two-plate plate method: fixed opening procedure, and single-plate method
    BS 874:1973 Methods for determining thermal insulating properties with definitions of thermal insulating terms

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 874-3.2:1990 Methods for determining thermal insulating properties. Tests for thermal transmittance and conductance Calibrated hot-box method
    BS 874-2.1:1986 Methods for determining thermal insulating properties. Tests for thermal conductivity and related properties Guarded hot-plate method
    BS 874-1:1986 Methods for determining thermal insulating properties Introduction, definitions and principles of measurement
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