Standard Test Method for Evaluating the Resistance to Thermal Transmission of Materials by the Guarded Heat Flow Meter Technique

SIGNIFICANCE AND USE
This test method is designed to measure and compare thermal properties of materials under controlled conditions and their ability to maintain required thermal conductance levels.
SCOPE
1.1 This test method covers a steady-state technique for the determination of the resistance to thermal transmission (thermal resistance) of materials in thicknesses of less than 25 mm. For homogeneous opaque solid specimens of a representative thickness, thermal conductivity can be determined (see Note 0). This test method is useful for specimens having a thermal resistance in the range from 10 to 400 104 m 2K/W, which can be obtained from materials of thermal conductivity in the approximate range from 0.1 to 30 W/(mK) over the approximate temperature range from 150 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/(mK).Note 0
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 C 518, 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 considered standard.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Aug-2006
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM E1530-06 - Standard Test Method for Evaluating the Resistance to Thermal Transmission of Materials by the Guarded Heat Flow Meter Technique
English language
9 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1530 – 06
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.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E220 Test Method for Calibration of Thermocouples By
Comparison Techniques
1.1 This test method covers a steady-state technique for the
E1142 Terminology Relating to Thermophysical Properties
determination of the resistance to thermal transmission (ther-
E1225 Test Method for Thermal Conductivity of Solids by
mal resistance) of materials in thicknesses of less than 25 mm.
Means of the Guarded-Comparative-Longitudinal Heat
For homogeneous opaque solid specimens of a representative
Flow Technique
thickness, thermal conductivity can be determined (see Note
F104 Classification System for Nonmetallic Gasket Mate-
1). This test method is useful for specimens having a thermal
−4 2
rials
resistance in the range from 10 to 400 3 10 m ·K/W, which
F433 Practice for EvaluatingThermal Conductivity of Gas-
can be obtained from materials of thermal conductivity in the
ket Materials
approximate range from 0.1 to 30 W/(m·K) over the approxi-
mate temperature range from 150 to 600 K. It can be used
3. Terminology
outside these ranges with reduced accuracy for thicker speci-
3.1 Definitions of Terms Specific to This Standard:
mens and for thermal conductivity values up to 60 W/(m·K).
3.1.1 heatfluxtransducer(HFT)—adevicethatproducesan
NOTE 1—A body is considered homogeneous when the property to be
electrical output that is a function of the heat flux, in a
measured is found to be independent of specimen dimensions.
predefined and reproducible manner.
1.2 This test method is similar in concept to Test Method
3.1.2 thermal conductance (C)—the time rate of heat flux
C518, but is modified to accommodate smaller test specimens,
through a unit area of a body induced by unit temperature
having a higher thermal conductance. In addition, significant
difference between the body surfaces.
attention has been paid to ensure that the thermal resistance of
3.1.2.1 average temperature of a surface—the area-
contacting surfaces is minimized and reproducible.
weighted mean temperature of that surface.
1.3 The values stated in SI units are considered standard.
3.1.2.2 average (mean) temperature of a specimen (disc
1.4 This standard does not purport to address all of the
shaped)—themeanvalueoftheupperandlowerfacetempera-
safety concerns, if any, associated with its use. It is the
tures.
responsibility of the user of this standard to establish appro-
3.1.3 thermal conductivity (l)—(of a solid material)—the
priate safety and health practices and determine the applica-
time rate of heat flow, under steady conditions, through unit
bility of regulatory limitations prior to use.
area,perunittemperaturegradientinthedirectionperpendicu-
lar to the area:
2. Related Documents
3.1.3.1 apparent thermal conductivity—When other modes
2
2.1 ASTM Standards:
of heat transfer through a material are present in addition to
C518 Test Method for Steady-State Thermal Transmission
conduction, the results of the measurements performed in
Properties by Means of the Heat Flow Meter Apparatus
accordance with this test method will represent the apparent or
C1045 PracticeforCalculatingThermalTransmissionProp-
effective thermal conductivity for the material tested.
erties Under Steady-State Conditions
3.1.4 thermal resistance (R)—the reciprocal of thermal
conductance.
3.2 Symbols:
1
ThistestmethodisunderthejurisdictionofASTMCommitteeE37onThermal
3.2.1 l—thermal conductivity, W/(m·K) or Btu·in./
Measurements and is the direct responsibility of Subcommittee E37.05 onThermo-
2
physical Properties.
(h·ft ·°F).
2 2
Current edition approved Sept. 1, 2006. Published November 2006. Originally
3.2.2 C—thermal conductance, W/m( ·K) or Btu/(h·ft ·°F).
approved in 1993. Last previous edition approved in 2004 as E1530–04. DOI:
2 2
3.2.3 R—thermal resistance, m ·K/W or h·ft ·°F/Btu.
10.1520/E1530-06.
2
3.2.4 Dx—specimen thickness, mm or in.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
2 2
contact ASTM Customer service at service@astm.org. For Annual Book of ASTM
3.2.5 A—specimen cross-sectional area, m or ft .
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1530 – 06
3.2.6 Q—hea
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.