ASTM D2717-95

Standard Test Method for Thermal Conductivity of Liquids

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 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.

General Information

• Status: Historical
• Publication Date: 31-Dec-1999
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.L0.07 - Engineering Sciences of High Performance Fluids and Solids (Formally D02.1100)

Relations

• Replaced By: ASTM D2717-95(2000) - Standard Test Method for Thermal Conductivity of Liquids
• Effective Date: 01-Jan-2000

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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: D 2717 – 95 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
1
Thermal Conductivity of Liquids
This standard is issued under the fixed designation D 2717; 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 (e) indicates an editorial change since the last revision or reapproval.
TABLE 1 Selected Conversion Factors for Thermal Conductivity
1. Scope
To Convert From To Multiply By
1.1 This test method covers the determination of the thermal
cal/s·cm·°C w/cm·°C 4.184
conductivity of nonmetallic liquids. It is applicable to liquids
cal/s·cm·°C kcal/h·m·°C 360
that are: (1) chemically compatible with borosilicate glass and
2
cal/s·cm·°C Btu·in./h·ft ·°F 2903
platinum; (2) moderately transparent or absorbent to infrared
w/cm·°C cal/s·cm·°C 0.2389
w/cm·°C kcal/h·m·°C 86.00
radiation; and (3) have a vapor pressure less than 200 torr at the
2
w/cm·°C Btu·in./h·ft ·°F 693.7
temperature of test.
kcal/h·m·°C cal/s·cm·°C 0.002778
1.1.1 Materials that have vapor pressures of up to 345 kPa
kcal/h·m·°C W/cm·°C 0.01163
2
kcal/h·m·°C Btu·in./h·ft ·°F 8.064
(50 psia), absolute can be tested provided that adequate
2
Btu·in./h·ft ·°F cal/s·cm·°C 0.0003445
measures are taken to repress volatilization of the sample by
2
Btu·in./h·ft ·°F W/cm·°C 0.001442
2
pressurizing the thermal conductivity cell. The usual safety
Btu·in./h·ft ·°F kcal/h·m·°C 0.1240
precautions for pressure vessels shall be followed under these
circumstances.
1.2 The values stated in SI units are to be regarded as the
3.2 For working purposes in this test method, the rounded-
standard. The values in parentheses are for information only.
off value of 4.19 J/cal is used, as this is adequate for the
1.3 This standard does not purport to address all of the
precision of the test and also represents the rounded-off value
safety concerns, if any, associated with its use. It is the
of watt-second per calorie units in Table 1, thus avoiding the
responsibility of the user of this standard to establish appro-
difficulty caused by the dual definition of the calorie.
priate safety and health practices and determine the applica-
3.3 Symbols:Symbols:
bility of regulatory limitations prior to use.
2. Referenced Documents
T 5 filament temperature, °C,
f
2.1 ASTM Standards:
T 5 bath thermostat temperature, °C,
b
2
D 86 Test Method for Distillation of Petroleum Products
DT 5 T − T ,° C,
f b
D 1160 Test Method for Distillation of Petroleum Products
r 5 filament radius, cm,
f
2
at Reduced Pressures r 5 internal radius of tube, cm,
i
r 5 external radius of tube, cm,
D 2887 Test Method for Boiling Range Distribution of
o
3
L 5 effective length of tube, cm,
Petroleum Fractions by Gas Chromatography
R 5 resistance of filament, V,
D 2893 Test Method for Oxidation Characteristics of
3
I 5 electric current through filament, A,
Extreme-Pressure Lubricating Oils
K 5 thermal conductivity of liquid, cal/s·cm·°C,
L
3. Terminology
K 5 thermal conductivity of glass-tube, cal/s·cm·°C,
G
−1
A 5 [ln(r /r )]/2p L,cm , and
i f
3.1 Units:
B 5 [ln(r /r )]/2p LK , s·°C/cal.
o i G
3.1.1 The energy units used in this test method are defined
as follows:
4. Summary of Test Method
1 Cal (International Table calorie) 5 4.1868 absolute J
4.1 A thermal conductivity cell consisting of a straight,
1 Btu (British thermal unit) 5 1055.07 absolute J
3.1.2 The units of thermal conductivity commonly used and four-lead, platinum resistance thermometer element located
their inter-conversion factors are shown in Table 1. concentrically in a long, small-diameter, precision-bore boro-
silicate glass tube is calibrated by accurate measurement of the
cell dimensions and by determination of the temperature-
1
This test method is under the jurisdiction of ASTM Committee D-2 on
resistance properties of the platinum element.
Petroleum Products and Lubricant sa nd is the direct responsibility of Subcommittee
D02.11 on Engineering Science and High Performance Fluids and Solids.
4.2 Thermal conductivity is determined by measurement of
Current edition approved Aug. 15, 1995. Published October 1995. Originally
the temperature gradient produced across the liquid sample by
published as D 2717 – 68 T. Last previous edition D 2717 – 90.
2
a known amount of energy introduced into the cell by electri-
Annual Book of ASTM Standards, Vol 05.01.
3
Annual Book of ASTM Standards, Vol 05.02. cally heating the platinum element.
1

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D 2717
5. Significance and Use
5.1 The thermal conductivity o
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