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BS 874:1973

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 with definitions of thermal insulating terms

Available format(s)

Hardcopy , PDF

Superseded date

23-11-2007

Language(s)

English

Published date

23-11-1973

€271.12
Excluding VAT

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
UNE-EN 150004:1991 Identical
ISO/TR 9165:1988 Similar to

BS 4508-4:1977 Thermally insulated underground pipelines Specific testing and inspection requirements for cased systems without air gap
BS 3533:1981 Glossary of thermal insulation terms
ISO 8990:1994 Thermal insulation — Determination of steady-state thermal transmission properties — Calibrated and guarded hot box
BS 3958-4:1982 Thermal insulating materials Bonded preformed man-made mineral fibre pipe sections
BS 3958-1:1982 Thermal insulating materials Magnesia preformed insulation
BS 3958-6:1972 Thermal insulating materials Finishing materials; hard setting composition, self-setting cement and gypsum plaster
BS 4370-2:1993 Methods of test for rigid cellular materials Methods 7 to 9
BS 3958-2:1982 Thermal insulating materials Calcium silicate preformed insulation
EEMUA 147 : 2016 RECOMMENDATIONS FOR REFRIGERATED LIQUEFIED GAS STORAGE TANKS
BS 4618-3.3:1973 Recommendations for the presentation of plastics design data. Thermal properties Thermal conductivity
BS EN ISO 8990:1996 Thermal insulation. Determination of steady-state thermal transmission properties. Calibrated and guarded hot box
EN ISO 8990:1996 Thermal insulation - Determination of steady-state thermal transmission properties - Calibrated and guarded hot box (ISO 8990:1994)

BS 3708(1969) : LATEST THE USE OF THERMAL INSULATING MATERIALS BETWEEN 230 DEGREES CENTIGRADE AND 650 DEGREES CENTIGRADE
BS 1902-1A:1966 Methods of testing refractory materials Sampling and physical tests
BS 2972:1989 Methods of test for inorganic thermal insulating materials
BS 874-2.1:1986 Methods for determining thermal insulating properties. Tests for thermal conductivity and related properties Guarded hot-plate method
BS 1334(1969) : LATEST THE USE OF THERMAL INSULATING MATERIALS FOR CENTRAL HEATING AND HOT AND COLD WATER SUPPLY INSTALLATIONS
BS 874-1:1986 Methods for determining thermal insulating properties Introduction, definitions and principles of measurement
BS 3533:1981 Glossary of thermal insulation terms
BS 874-3.1:1987 Methods for determining thermal insulating properties. Tests for thermal transmittance and conductance Guarded hot-box method

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