ASTM D 4529 : 2024
Current
The latest, up-to-date edition.
Standard Test Method for Estimation of Net Heat of Combustion of Aviation Fuels
Hardcopy , PDF
English
10-10-2024
Committee |
D 02
|
DocumentType |
Test Method
|
Pages |
4
|
PublisherName |
American Society for Testing and Materials
|
Status |
Current
|
Supersedes |
1.1This test method covers the estimation of the net heat of combustion at constant pressure in metric (SI) units, megajoules per kilogram.
1.2This test method is purely empirical, and it is applicable only to liquid hydrocarbon fuels derived by normal refining processes from conventional crude oil which conform to the requirements of specifications for aviation gasolines or aircraft turbine and jet engine fuels of limited boiling ranges and compositions as described in Note 1.
Note 1:The estimation of the net heat of combustion of a hydrocarbon fuel from its aniline point temperature and density is justifiable only when the fuel belongs to a well-defined class for which a relationship between these quantities has been derived from accurate experimental measurements on representative samples of that class. Even in this class, the possibility that the estimates can be in error by large amounts for individual fuels should be recognized. The JP-8 fuel, although not experimentally tested, has properties similar to JP-5 and Jet A fuels and can be considered in the same class. The classes of fuels used to establish the correlation presented in this test method are represented by the following applications: Fuel Specification Aviation gasoline fuels: Specification D910 Grades 80, UL82, UL87, 90, 91, UL91, 94, UL94, 100/100LL/100VLL Specification D6227 Aviation turbine fuels: Specification D6615 Jet B, JP-4 MIL-DTL-5624 JP-5 MIL-DTL-5624 JP-8 MIL-DTL-83133 Jet A, Jet A-1 Specification D1655
Specification D7547
Specification D7592
Specification D7223
Specification D7566
1.3The net heat of combustion can also be estimated by Test Methods D1405 or D3338. Test Method D1405 requires calculation of one of four equations dependent on the fuel type with the precision equivalent to that of this test method, whereas Test Method D3338 requires calculation of a single equation for aviation fuel with a precision equivalent to that test method.
1.4The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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