BS 874:1973
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Methods for determining thermal insulating properties with definitions of thermal insulating terms
Hardcopy , PDF
English
23-11-1973
23-11-2007
BS 874-3.1:1987
BS 874-1:1986
BS 874-2.1:1986
BS 874-2.2:1988
Co-operating organizations
Foreword
Introduction
Methods
1 General
1.1 Scope
1.2 Definitions
2 General principles of measurement
2.1 Thermal conductivity, conductance and transmittance
2.2 Emissivity
2.3 Heat capacity per unit mass
3 Testing conditions and test reports
3.1 Temperatures of test
3.2 Conditioning of materials
3.3 Moisture content
3.4 Test reports
4 Methods for determining thermal properties
4.1 General
4.2 Thermal conductivity
4.3 Thermal transmittance and thermal conductance
(above approximately 0.7 W/(m2K))
4.4 Emissivity
4.5 Heat capacity per unit mass (temperatures up to
approximately 1000 deg C)
5 References
Appendices
A Additional methods of measuring thermal
conductivity
B Heat flow meter method of measuring thermal
conductivity with two test specimens
C Heat flow meter method of measuring thermal
conductivity with a single test specimen
D Transient state method of thermal conductivity
measurement
E Determination of thermal conductivity by the use of
a thermal probe
F Units and conversion factors
Tables
1 Summary of symbols and dimensions of quantities
2 Common shape factors
3 Methods for determining thermal properties
4 Quantity of heat (conversion factors)
5 Thermal transmission (conversion factors)
6 Thermal conductivity (conversion factors)
7 Thermal conductance, thermal transmittance, surface
coefficient, convection coefficient and radiation
coefficient (conversion factors)
8 Heat capacity per unit volume (conversion factors)
9 Thermal diffusivity (conversion factors)
Figures
1 Diagram illustrating definition 2
2 Spherical vessel for low temperature conductivity
tests
3 Heat flow meter apparatus
4 Heat flow meter with single specimen
5 Typical two specimen arrangement for transient
flow measurement of thermal properties
6 Differential thermocouples for measurement of
average temperature differences
7 Diagram of probe with thermocouple reference
junction
Meanings of relevant symbols with SI units. Dimensions, determination of thermal properties over various temperature ranges. Measurement of thermal conductivity, conversion tables for common units appended.
| Committee |
B/540
|
| DevelopmentNote |
Supersedes 71/34796 DC. (06/2004)
|
| DocumentType |
Standard
|
| Pages |
38
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO/TR 9165:1988 | Similar to |
| UNE-EN 150004:1991 | Identical |
A newer version of this standard is available.
View Current Edition View Current Edition View Current Edition View Current Edition
Please Login or Create an Account so you can add users to your Multi user PDF Later.
Important note : All end users must be registered with an Account prior to user licenses being assigned.
Users cannot be edited or removed once added to your Multi user PDF.