ASTM D3338-05
(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 1The experimental data on heat of combustion from which the Test Method D 3338 correlation was devised was obtained by a precision method similar to Test Method D 4809.
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 (, )
Kerosines, alkylates, and special WADC fuels ()
Pure hydrocarbons-paraffins, naphthenes, and aromatics ()
Fuels for which data were reported by the Coordinating Research Council ().
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 D 1405 or in SI units by Test Method D 4529. Test Method D 1405 requires calculation of one of four equations dependent on the fuel type with a precision equivalent to that of this test method. Test Method D 4529 requires calculation of a single equation for all aviation fuels with a precision equivalent to that of this test method. Unlike Test Method D 1405 and D 4529, Test Method D 3338 does not require the use of aniline point.
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:D3338–05
Standard Test Method for
1
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* Unlike Test Method D 1405 and D 4529, Test Method D 3338
does not require the use of aniline point.
1.1 This test method covers the estimation of the net heat of
1.5 This standard does not purport to address all of the
combustion (megajoules per kilogram or Btu per pound) of
safety concerns, if any, associated with its use. It is the
aviation gasolines and aircraft turbine and jet engine fuels.
responsibility of the user of this standard to establish appro-
1.2 This test method is purely empirical and is applicable to
priate safety and health practices and determine the applica-
liquid hydrocarbon fuels that conform to the specifications for
bility of regulatory limitations prior to use.
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.
2. Referenced Documents
3
NOTE 1—The experimental data on heat of combustion from which the
2.1 ASTM Standards:
Test Method D 3338 correlation was devised was obtained by a precision
D86 Test Method for Distillation of Petroleum Products at
method similar to Test Method D 4809.
Atmospheric Pressure
NOTE 2—The estimation of the net heat of combustion of a hydrocar-
D 240 Test Method for Heat of Combustion of Liquid
bon fuel is justifiable only when the fuel belongs to a well-defined class
Hydrocarbon Fuels by Bomb Calorimeter
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 1266 Test Method for Sulfur in Petroleum Products
accurate experimental measurements on representative samples of that
(Lamp Method)
class. Even in this case, the possibility that the estimates may be in error
D 1298 Test Method for Density, Relative Density (Specific
bylargeamountsforindividualfuelsshouldberecognized.Thefuelsused
Gravity), or API Gravity of Crude Petroleum and Liquid
toestablishthecorrelationpresentedinthismethodaredefinedasfollows:
Petroleum Products by Hydrometer Method
Fuels:
2
D 1319 Test Method for Hydrocarbon Types in Liquid
Aviation gasoline—Grades 100/130 and 115/145 (1, 2)
Kerosines, alkylates, and special WADC fuels (3) Petroleum Products by Fluorescent Indicator Adsorption
Pure hydrocarbons—paraffins, naphthenes, and aromatics (4)
D 1405 Test Method for Estimation of Net Heat of Com-
Fuels for which data were reported by the Coordinating Research
bustion of Aviation Fuels
Council (5).
D 1552 Test Method for Sulfur in Petroleum Products
1.3 Although the test method permits the calculation of net
(High-Temperature Method)
heatofcombustionineitherSIorinch-poundunits,SIunitsare D 2622 Test Method for Sulfur in Petroleum Products by
the preferred units.
Wavelength Dispersive X-ray Fluorescence Spectrometry
1.4 The net heat of combustion can also be estimated in D 2887 Test Method for Boiling Range Distribution of
inch-pound units by Test Method D 1405 or in SI units by Test
Petroleum Fractions by Gas Chromatography
Method D 4529. Test Method D 1405 requires calculation of D 3120 Test Method for Trace Quantities of Sulfur in Light
one of four equations dependent on the fuel type with a
Liquid Petroleum Hydrocarbons by Oxidative Microcou-
precision equivalent to that of this test method. Test Method lometry
D 4529requirescalculationofasingleequationforallaviation
D 4052 Test Method for Density and Relative Density of
fuels with a precision equivalent to that of this test method. Liquids by Digital Density Meter
D 4294 Test Method for Sulfur in Petroleum Products by
Energy Dispersive X-Ray Fluorescence Spectrometry
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
3
Current edition approved Nov. 1, 2005. Published November 2005. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1974. Last previous edition approved in 2004 as D 3338–04.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
The boldface number in parentheses refers to the list of references at the end of Standards volume information, refer to the standard’s Document Summary page on
this t
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