AS 2464.5-1985

1 - AS 2464.5:1985 METHODS OF TESTING THERMAL INSULATION - STEADY– STATE THERMAL TRANSMISSION PROPERTIES BY MEANS OF THE HEAT FLO
1 - CONTENTS
2 - METHOD
2 - 1 SCOPE.
2 - 2 REFERENCED DOCUMENTS.
2 - 3 DEFINITIONS.
2 - 3.1 Layered specimen
2 - 3.2 Homogeneous specimen
2 - 4 SYMBOLS.
2 - 5 GENERAL REQUIREMENTS FOR SPECIMENS.
2 - 5.1 For determination of thermal resistance and thermal conductance.
2 - 5.2 For determination of apparent thermal resistivity and apparent thermal conductivity
3 - 5.3 For determination of thermal resistivity and thermal conductivity.
3 - 6 CERTIFICATION OF RESULTS.
3 - 6.1 General.
3 - 6.2 Reporting of results.
3 - 7 APPARATUS.
3 - 7.1 General.
4 - 7.2 Warm plate.
5 - 7.3 Cold plate.
5 - 7.4 Heat flow meter.
5 - 7.5 Clamping.
6 - 7.6 Edge insulation.
6 - 7.7 Temperature sensors.
6 - 7.8 Measuring system.
6 - 7.9 Thickness-measuring device.
7 - 7.10 Proven performance.
7 - 8 SELECTION AND PREPARATION OF SPECIMENS.
7 - 8.1 Selection.
7 - 8.2 Surface finish.
7 - 8.3 Conditioning.
7 - 8.4 Measurements on specimens.
8 - 8.5 Limitations on specimen thickness.
15 - 9 CALIBRATION.
15 - 9.1 One-specimen configuration.
15 - 9.2 Two-specimen configuration.
16 - 9.3 Calibration curve.
16 - 9.4 Calibration drift.
16 - 10 PROCEDURE.
16 - 10.1 Temperature difference and gradient.
16 - 10.2 Edge insulation.
16 - 10.3 Temperature control.
16 - 10.4 Settling time and measurement interval.
17 - 11 CALCULATIONS.
17 - 11.1 Density and change in mass.
17 - 11.2 Thermal properties.
17 - 12 REPORT.
18 - 13 REFERENCES.
19 - APPENDIX A - SUGGESTED METHODS FOR PREPARING TEST SPECIMENS OF LOOSE MATERIALS WHEN NO METHOD IS SPECIFIED IN THE MATERIAL SP
19 - A1 METHOD A.
19 - A2 METHOD B.
20 - APPENDIX B - TESTS ON SPECIMENS TO DETERMINE APPLICABILITY OF THE METHOD
20 - B1 SCOPE.
20 - B2 DISTORTION OF THEHEAT FLOWIN THE SPECIMEN.
20 - B3 TEST FOR THERMAL SHORT-CIRCUITS.
20 - B3.1 General.
20 - B3.2 Simple test.
20 - B4 DETERMINING THE THERMAL CONDUCTIVITY AND THERMAL RESISTIVITY OF A MATERIAL.
20 - B4.1 General.
21 - B4.2 Dependence on specimen thickness.
21 - B4.3 Dependence on temperature difference.
21 - B4.4 Method of determining dependence on temperature difference.
21 - B4.5 Determination of minimum thickness for which thermal properties of the material may be defined
21 - B4.6 Procedure.
22 - APPENDIX C - TYPES OF HEAT FLOW METERS
22 - APPENDIX D - HEAT FLOW METER EQUATIONS
23 - APPENDIX E - RESPONSE OF HEAT FLOW METERS

AS 2464.5-1985 sets out a method for determining the steady-state thermal transmission properties of thermal insulation materials.

This standard sets out a method for determining the steady-state thermal transmission properties of thermal insulation materials within the limits set by Clause 5, by means of a heat flow meter.NOTES:1. This is a secondary or comparative method for measuring the thermal transmission properties of specimen(s), since only the ratio of the thermal resistance of the specimen(s) to that of a standard specimen(s) is measured. The thermal resistances of the standard specimens must be determined in accordance with AS 2464.6.2. For purposes of certification, this method is limited to specimens with thermal resistances greater than 0.10 m2.K/W in any direction.

Under Revision See DR 02026 CP