ASTM D3338-00
(Test Method)Standard Test Method for Estimation of Net Heat of Combustion of Aviation Fuels
Standard Test Method for Estimation of Net Heat of Combustion of Aviation Fuels
SCOPE
1.1 This test method covers the estimation of the net heat of combustion (megajoules per kilogram or Btu per pound) of aviation gasolines and aircraft turbine and jet engine fuels.
1.2 This test method is purely empirical and is applicable to liquid hydrocarbon fuels that conform to the specifications for aviation gasolines or aircraft turbine and jet engine fuels of grades Jet A, Jet A-1, Jet B, JP-4, JP-5, JP-7, and JP-8.
Note 1--The experimental data on heat of combustion from which the Test Method D3338 correlation was devised was obtained by a precision method similar to Test Method D4809.
Note 2--The estimation of the net heat of combustion of a hydrocarbon fuel is justifiable only when the fuel belongs to a well-defined class for which a relation between heat of combustion and aromatic and sulfur contents, density, and distillation range of the fuel has been derived from accurate experimental measurements on representative samples of that class. Even in this case, the possibility that the estimates may be in error by large amounts for individual fuels should be recognized. The fuels used to establish the correlation presented in this method are defined as follows:
Fuels:
Aviation gasoline-Grades 100/130 and 115/145 (1,2)
Kerosines, alkylates, and special WADC fuels (3)
Pure hydrocarbons-paraffins, naphthenes, and aromatics (4)
Fuels for which data were reported by the Coordinating Research Council (5).
1.3 Although the test method permits the calculation of net heat of combustion in either SI or inch-pound units, SI units are the preferred units.
1.4 The net heat of combustion can also be estimated in inch-pound units by Test Method D1405 or in SI units by Test Method D4529. Test Method D1405 requires calculation of one of four equations dependent on the fuel type with a precision equivalent to that of this test method. Test Method D4529 requires calculation of a single equation for all aviation fuels with a precision equivalent to that of this test method. Unlike D1405 and D4529, D3338 does not require the use of aniline point.
1.5 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.
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An American National Standard
Designation: D 3338 – 00
Standard Test Method for
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Estimation of Net Heat of Combustion of Aviation Fuels
This standard is issued under the fixed designation D 3338; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers the estimation of the net heat of
responsibility of the user of this standard to establish appro-
combustion (megajoules per kilogram or Btu per pound) of
priate safety and health practices and determine the applica-
aviation gasolines and aircraft turbine and jet engine fuels.
bility of regulatory limitations prior to use.
1.2 This test method is purely empirical and is applicable to
liquid hydrocarbon fuels that conform to the specifications for
2. Referenced Documents
aviation gasolines or aircraft turbine and jet engine fuels of
2.1 ASTM Standards:
grades Jet A, Jet A-1, Jet B, JP-4, JP-5, JP-7, and JP-8.
D 86 Test Method for Distillation of Petroleum Products at
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NOTE 1—The experimental data on heat of combustion from which the
Atmospheric Pressure
Test Method D 3338 correlation was devised was obtained by a precision
D 240 Test Method for Heat of Combustion of Liquid
method similar to Test Method D 4809.
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Hydrocarbon Fuels by Bomb Calorimeter
NOTE 2—The estimation of the net heat of combustion of a hydrocar-
D 1266 Test Method for Sulfur in Petroleum Products
bon fuel is justifiable only when the fuel belongs to a well-defined class
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(Lamp Method)
for which a relation between heat of combustion and aromatic and sulfur
contents, density, and distillation range of the fuel has been derived from D 1298 Test Method for Density, Relative Density (Specific
accurate experimental measurements on representative samples of that
Gravity), or API Gravity of Crude Petroleum and Liquid
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class. Even in this case, the possibility that the estimates may be in error
Petroleum Products by Hydrometer Method
by large amounts for individual fuels should be recognized. The fuels used
D 1319 Test Method for Hydrocarbon Types in Liquid
to establish the correlation presented in this method are defined as follows:
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Petroleum Products by Fluorescent Indicator Adsorption
Fuels:
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D 1405 Test Method for Estimation of Net Heat of Com-
Aviation gasoline—Grades 100/130 and 115/145 (1, 2)
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bustion of Aviation Fuels
Kerosines, alkylates, and special WADC fuels (3)
Pure hydrocarbons—paraffins, naphthenes, and aromatics (4)
D 1552 Test Method for Sulfur in Petroleum Products
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Fuels for which data were reported by the Coordinating Research
(High–Temperature Method)
Council (5).
D 2622 Test Method for Sulfur in Petroleum Products by
1.3 Although the test method permits the calculation of net
Wavelength Dispersive X-Ray Fluorescence Spectrom-
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heat of combustion in either SI or inch-pound units, SI units are etry
the preferred units.
D 3120 Test Method for Trace Quantities of Sulfur in Light
1.4 The net heat of combustion can also be estimated in Liquid Petroleum Hydrocarbons by Oxidative Microcou-
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inch-pound units by Test Method D 1405 or in SI units by Test
lometry
Method D 4529. Test Method D 1405 requires calculation of D 4052 Test Method for Density and Relative Density of
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one of four equations dependent on the fuel type with a
Liquids by Digital Density Meter
precision equivalent to that of this test method. Test Method D 4294 Test Method for Sulfur in Petroleum Products by
5
D 4529 requires calculation of a single equation for all aviation
Energy Dispersive X-Ray Fluorescence Spectrometry
fuels with a precision equivalent to that of this test method. D 4529 Test Method for Estimation of Net Heat of Com-
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Unlike D 1405 and D 4529, D 3338 does not require the use of
bustion of Aviation Fuels
aniline point. D 4809 Test Method for Heat of Combustion of Liquid
Hydrocarbon Fuels by Bomb Calorimeter (Intermediate
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Precision Method)
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This test method is under the jurisdiction of ASTM Committee D02 on
D 5453 Test Method for Determination of Total Sulfur in
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.05.B on Calorimetry of Liquid Hydrocarbon Fuels.
Current edition approved Dec. 10, 2000. Published January 2001. Originally
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published as D 3338 – 74. Last previous edition D 3338 – 95. Annual Book of ASTM Standards, Vol 05.01.
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The boldface number in parentheses refers to the list of references at the end of A
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