ASTM E1530-19
(Test Method)Standard Test Method for Evaluating the Resistance to Thermal Transmission by the Guarded Heat Flow Meter Technique
Standard Test Method for Evaluating the Resistance to Thermal Transmission by the Guarded Heat Flow Meter Technique
SIGNIFICANCE AND USE
5.1 This test method describes a procedure to measure and compare the thermal resistance properties of specimens (less than 25 mm in thickness) under controlled conditions.
SCOPE
1.1 This test method describes a steady-state technique for the determination of the resistance to thermal transmission (thermal resistance) of materials having a thickness of less than 25 mm. Thermal conductivity may be determined for homogeneous opaque solid specimens (see Note 1). This test method is particularly useful for homogeneous, multilayer, and composite specimens having a thermal resistance in the range from 10 (cm)2·K·W-1 to 400 (cm)2·K·W-1, which may be obtained from materials with an approximate thermal conductivity range 0.1 W·m-1·K-1 to 30 W·m-1·K-1 over the approximate temperature range from 150 K to 600 K. It can be used outside these ranges with reduced accuracy for thicker specimens and for thermal conductivity values up to 60 W·m-1·K-1.
Note 1: A body is considered homogeneous when the property to be measured is found to be independent of specimen dimensions.
1.2 This test method is similar in concept to Test Method C518, but is modified to accommodate smaller test specimens, having a higher thermal conductance. In addition, significant attention has been paid to ensure that the thermal resistance of contacting surfaces is minimized and reproducible.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E1530 − 19
Standard Test Method for
Evaluating the Resistance to Thermal Transmission by the
1
Guarded Heat Flow Meter Technique
This standard is issued under the fixed designation E1530; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Related Documents
2
1.1 This test method describes a steady-state technique for 2.1 ASTM Standards:
the determination of the resistance to thermal transmission C518Test Method for Steady-State Thermal Transmission
(thermalresistance)ofmaterialshavingathicknessoflessthan Properties by Means of the Heat Flow Meter Apparatus
25mm.Thermal conductivity may be determined for homoge-
3. Terminology
neousopaquesolidspecimens(seeNote1).Thistestmethodis
particularly useful for homogeneous, multilayer, and compos- 3.1 Definitions of Terms Specific to This Standard:
ite specimens having a thermal resistance in the range from 10
3.1.1 heat flux transducer (HFT), n—a device that produces
2 -1 2 -1
(cm) ·K·W to 400(cm) ·K·W , which may be obtained from an electrical output that is a function of the heat flux, in a
materials with an approximate thermal conductivity range 0.1
predefined and reproducible manner.
-1 -1 -1 -1
W·m ·K to 30W·m ·K over the approximate temperature
3.1.2 thermal conductance (C), n—thetimerateofheatflux
rangefrom150Kto600K.Itcanbeusedoutsidetheseranges
through a unit area of a body induced by unit temperature
with reduced accuracy for thicker specimens and for thermal
difference between the body surfaces.
-1 -1
conductivity values up to 60W·m ·K .
3.1.2.1 average temperature of a surface, n—the area-
NOTE 1—A body is considered homogeneous when the property to be
weighted mean temperature of that surface.
measured is found to be independent of specimen dimensions.
3.1.2.2 average (mean) temperature of a specimen (disc
1.2 This test method is similar in concept to Test Method
shaped), n—the mean value of the upper and lower face
C518, but is modified to accommodate smaller test specimens,
temperatures.
having a higher thermal conductance. In addition, significant
3.1.3 thermal conductivity (λ)—(of a solid material), n—the
attention has been paid to ensure that the thermal resistance of
time rate of heat flow, under steady conditions, through unit
contacting surfaces is minimized and reproducible.
area,perunittemperaturegradientinthedirectionperpendicu-
1.3 The values stated in SI units are to be regarded as
lar to the area:
standard. No other units of measurement are included in this
3.1.3.1 apparent thermal conductivity, n—when other
standard.
modes of heat transfer through a material are present in
1.4 This standard does not purport to address all of the
addition to conduction, the results of the measurements per-
safety concerns, if any, associated with its use. It is the
formed in accordance with this test method will represent the
responsibility of the user of this standard to establish appro-
apparent or effective thermal conductivity for the material
priate safety, health, and environmental practices and deter-
tested.
mine the applicability of regulatory limitations prior to use.
3.1.4 thermal resistance (R), n—the reciprocal of thermal
1.5 This international standard was developed in accor-
conductance.
dance with internationally recognized principles on standard-
3.2 Symbols:
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
-1 -1
λ = thermal conductivity, W·m ·K
mendations issued by the World Trade Organization Technical
-2 -1
C = thermal conductance, W·m ·K
Barriers to Trade (TBT) Committee. 2 -1
R = thermal resistance, m ·K·W
∆x = specimen thickness, mm
1
ThistestmethodisunderthejurisdictionofASTMCommitteeE37onThermal
Measurements and is the direct responsibility of Subcommittee E37.05 on Thermo-
2
physical Properties. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Feb. 1, 2019. Published February 2019. Originally contact ASTM Customer service at service@astm.org. For Annual Book of ASTM
approved in 1993. Last previous edition approved in 2016 as E1530–11 (2016). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/E1530-19. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
-
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1530 − 11 (Reapproved 2016) E1530 − 19
Standard Test Method for
Evaluating the Resistance to Thermal Transmission of
1
Materials by the Guarded Heat Flow Meter Technique
This standard is issued under the fixed designation E1530; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Scope*
1.1 This test method coversdescribes a steady-state technique for the determination of the resistance to thermal transmission
(thermal resistance) of materials of thicknesses having a thickness of less than 25 mm. For homogeneous opaque solid specimens
of a representative thickness, thermal conductivity can be determined Thermal conductivity may be determined for homogeneous
opaque solid specimens (see Note 1). This test method is particularly useful for homogeneous, multilayer, and composite
2 -1 -4 2 -1
specimens having a thermal resistance in the range from 10 to(cm) ·K·W 400 × 10to m 400 (cm) ·K·W , which canmay be
-1 -1
obtained from materials of with an approximate thermal conductivity in the approximate range from 0.1 range 0.1 W·m ·K to
-1 -1
30 W·m ·K over the approximate temperature range from 150 K to 600 K. It can be used outside these ranges with reduced
-1 -1
accuracy for thicker specimens and for thermal conductivity values up to 60 W·m ·K .
NOTE 1—A body is considered homogeneous when the property to be measured is found to be independent of specimen dimensions.
1.2 This test method is similar in concept to Test Method C518, but is modified to accommodate smaller test specimens, having
a higher thermal conductance. In addition, significant attention has been paid to ensure that the thermal resistance of contacting
surfaces is minimized and reproducible.
1.3 The values stated in SI units are to be regarded as standard. The additional values are mathematical conversions to
inch-pound units that are provided for information only and are not considered No other units of measurement are included in this
standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Related Documents
2
2.1 ASTM Standards:
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
C1045 Practice for Calculating Thermal Transmission Properties Under Steady-State Conditions
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
E1142 Terminology Relating to Thermophysical Properties
E1225 Test Method for Thermal Conductivity of Solids Using the Guarded-Comparative-Longitudinal Heat Flow Technique
F104 Classification System for Nonmetallic Gasket Materials
F433 Practice for Evaluating Thermal Conductivity of Gasket Materials
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
1
This test method is under the jurisdiction of ASTM Committee E37 on Thermal Measurements and is the direct responsibility of Subcommittee E37.05 on
Thermophysical Properties.
Current edition approved Sept. 1, 2016Feb. 1, 2019. Published September 2016February 2019. Originally approved in 1993. Last previous edition approved in 20112016
as E1530 – 11.E1530 – 11 (2016). DOI: 10.1520/E1530-11R16.10.1520/E1530-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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E1530 − 19
3.1.1 heat flux transducer (HFT)—(HFT), n—a device that produces an electrical output that is a function of the heat flux, i
...
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