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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Methods for determining thermal insulating properties. Tests for thermal transmittance and conductance Guarded hot-box method
Hardcopy , PDF
11-23-2007
English
02-27-1987
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
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