BS 874-3.1:1987
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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
Hardcopy , PDF
23-11-2007
English
27-02-1987
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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
Determination of steady-state thermal transmittance and conductance of large building elements such as walls, roofs and floors using a guarded hot-box apparatus.
| Committee |
B/540
|
| DevelopmentNote |
Supersedes 85/71639 DC. (06/2004) Supersedes BS 874(1983). (07/2004) Supersedes BS 874(1973). (12/2007)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| 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 |
| 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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