ASTM D2717-95(2009)
(Test Method)Standard Test Method for Thermal Conductivity of Liquids (Withdrawn 2018)
Standard Test Method for Thermal Conductivity of Liquids (Withdrawn 2018)
SIGNIFICANCE AND USE
The thermal conductivity of a substance is a measure of the ability of that substance to transfer energy as heat in the absence of mass transport phenomena. It is used in engineering calculations that relate to the manner in which a given system can react to thermal stresses.
SCOPE
1.1 This test method covers the determination of the thermal conductivity of nonmetallic liquids. It is applicable to liquids that are: (1) chemically compatible with borosilicate glass and platinum; (2) moderately transparent or absorbent to infrared radiation; and (3) have a vapor pressure less than 200 torr at the temperature of test.
1.1.1 Materials that have vapor pressures of up to 345 kPa (50 psia), absolute can be tested provided that adequate measures are taken to repress volatilization of the sample by pressurizing the thermal conductivity cell. The usual safety precautions for pressure vessels shall be followed under these circumstances.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
WITHDRAWN RATIONALE
This test method covers the determination of the thermal conductivity of nonmetallic liquids. It is applicable to liquids that are: (1) chemically compatible with borosilicate glass and platinum; (2) moderately transparent or absorbent to infrared radiation; and (3) have a vapor pressure less than 200 torr at the temperature of test.
Formerly under the jurisdiction of Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants, this test method was withdrawn in January 2018 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
General Information
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D2717 − 95 (Reapproved 2009)
Standard Test Method for
1
Thermal Conductivity of Liquids
This standard is issued under the fixed designation D2717; 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 3. Terminology
1.1 Thistestmethodcoversthedeterminationofthethermal 3.1 Units:
conductivity of nonmetallic liquids. It is applicable to liquids 3.1.1 The energy units used in this test method are defined
that are: (1) chemically compatible with borosilicate glass and as follows:
platinum; (2) moderately transparent or absorbent to infrared 1 Cal (International Table calorie)=4.1868 absolute J
radiation;and(3)haveavaporpressurelessthan200torratthe 1 Btu (British thermal unit)=1055.07 absolute J
temperature of test. 3.1.2 The units of thermal conductivity commonly used and
1.1.1 Materials that have vapor pressures of up to 345 kPa their interconversion factors are shown in Table 1.
(50 psia), absolute can be tested provided that adequate 3.2 For working purposes in this test method, the rounded-
measures are taken to repress volatilization of the sample by off value of 4.19 J/cal is used, as this is adequate for the
pressurizing the thermal conductivity cell. The usual safety precision of the test and also represents the rounded-off value
precautions for pressure vessels shall be followed under these of watt-second per calorie units in Table 1, thus avoiding the
circumstances. difficulty caused by the dual definition of the calorie.
1.2 The values stated in SI units are to be regarded as the 3.3 Symbols:
standard. The values given in parentheses are for information
T = filament temperature, °C,
f
only.
T = bath thermostat temperature, °C,
b
1.3 This standard does not purport to address all of the
∆T = T − T , °C,
f b
safety concerns, if any, associated with its use. It is the
r = filament radius, cm,
f
responsibility of the user of this standard to establish appro-
r = internal radius of tube, cm,
i
priate safety and health practices and determine the applica-
r = external radius of tube, cm,
o
bility of regulatory limitations prior to use. L = effective length of tube, cm,
R = resistance of filament, Ω,
I = electric current through filament, A,
2. Referenced Documents
K = thermal conductivity of liquid, cal/s·cm·°C,
2
L
2.1 ASTM Standards:
K = thermal conductivity of glass-tube, cal/s·cm·°C,
G
D86Test Method for Distillation of Petroleum Products at −1
A = [ln(r/r )]/2π L,cm , and
i f
Atmospheric Pressure
B = [ln(r /r)]/2πLK , s·°C/cal.
o i G
D1160TestMethodforDistillationofPetroleumProductsat
Reduced Pressure
4. Summary of Test Method
D2887Test Method for Boiling Range Distribution of Pe-
4.1 A thermal conductivity cell consisting of a straight,
troleum Fractions by Gas Chromatography
four-lead, platinum resistance thermometer element located
D2893 Test Methods for Oxidation Characteristics of
concentrically in a long, small-diameter, precision-bore boro-
Extreme-Pressure Lubrication Oils
silicate glass tube is calibrated by accurate measurement of the
cell dimensions and by determination of the temperature-
resistance properties of the platinum element.
1
This test method is under the jurisdiction of ASTM Committee D02 on
4.2 Thermal conductivity is determined by measurement of
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
SubcommitteeD02.L0.07onEngineeringSciencesofHighPerformanceFluidsand
the temperature gradient produced across the liquid sample by
Solids (Formally D02.1100).
a known amount of energy introduced into the cell by electri-
Current edition approved Oct. 1, 2009. Published November 2009. Originally
cally heating the platinum element.
approved in 1968. Last previous edition approved in 2005 as D2717–95(2005).
DOI: 10.1520/D2717-95R09.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 5. Significance and Use
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1 The thermal conductivity of a substance is a measure of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the ability of that substance to transfer energy as heat in the
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D2717 − 95 (2009)
TABLE 1 Selected Conversion Factors for Thermal Conductivity
To Convert From To Multiply By
cal/s·cm·°C w/cm·°C 4.184
cal/s·cm·°C kcal/h·m·°C 360
2
cal/s·cm·°C Btu·in./h·ft ·°F 2903
w/cm·°C cal/s·cm·°C 0.2389
w/cm·°C kcal/h·m·°C 86.00
...
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