ASTM D240-00
(Test Method)Standard Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter
Standard Test Method for Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb Calorimeter
SCOPE
1.1 This test method covers the determination of the heat of combustion of liquid hydrocarbon fuels ranging in volatility from that of light distillates to that of residual fuels.
1.2 Under normal conditions, this test method is directly applicable to such fuels as gasolines, kerosene's, Nos. 1 and 2 fuel oil, Nos. 1-D and 2-D diesel fuel and Nos. 0-GT, 1-GT, and 2-GT gas turbine fuels.
1.3 This test method is not as repeatable and not as reproducible as Test Method D4809.
1.4 The values stated in SI units are to be regarded as the standard.
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.For specific hazard statements, see Sections 7 and 9 and A1.10 and Annex A3.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn
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Designation:D240–00 An American National Standard
Standard Test Method for
Heat of Combustion of Liquid Hydrocarbon Fuels by Bomb
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Calorimeter
This standard is issued under the fixed designation D240; 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 (e) indicates an editorial change since the last revision or reapproval.
This test method has been adopted for use by government agencies to replace Method2502 of Federal Test Method Standard No. 791b.
1. Scope 3. Terminology
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1.1 Thistestmethod coversthedeterminationoftheheatof 3.1 Definitions:
combustion of liquid hydrocarbon fuels ranging in volatility 3.1.1 grossheatofcombustion,Qg(MJ/kg)—thequantityof
from that of light distillates to that of residual fuels. energyreleasedwhenaunitmassoffuelisburnedinaconstant
1.2 Under normal conditions, this test method is directly volume enclosure, with the products being gaseous, other than
applicable to such fuels as gasolines, kerosines, Nos. 1 and 2 water that is condensed to the liquid state.
fuel oil, Nos. 1-D and 2-D diesel fuel and Nos. 0-GT, 1-GT, 3.1.1.1 Discussion—The fuel can be either liquid or solid,
and 2-GT gas turbine fuels. and contain only the elements carbon, hydrogen, nitrogen, and
1.3 This test method is not as repeatable and not as sulfur. The products of combustion, in oxygen, are gaseous
reproducible as Test Method D4809. carbon dioxide, nitrogen oxides, sulfur dioxide, and liquid
1.4 The values stated in SI units are to be regarded as the water. In this procedure, 25°C is the initial temperature of the
standard. fuel and the oxygen, and the final temperature of the products
1.5 This standard does not purport to address all of the of combustion.
safety concerns, if any, associated with its use. It is the 3.1.2 net heat of combustion, Qn (MJ/kg)—the quantity of
responsibility of the user of this standard to establish appro- energy released when a unit mass of fuel is burned at constant
priate safety and health practices and determine the applica- pressure, with all of the products, including water, being
bility of regulatory limitations prior to use. For specific hazard gaseous.
statements, see Sections 7 and 9 and A1.10 and Annex A3. 3.1.2.1 Discussion—The fuel can be either liquid or solid,
and contain only the elements carbon, hydrogen, oxygen,
2. Referenced Documents
nitrogen, and sulfur. The products of combustion, in oxygen,
2.1 ASTM Standards:
are carbon dioxide, nitrogen oxides, sulfur dioxide, and water,
D129 Test Method for Sulfur in Petroleum Products (Gen- allinthegaseousstate.Inthisprocedure,thecombustiontakes
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eral Bomb Method)
place at a constant pressure of 0.1012 MPa (1 atm), and 25°C
2
D1018 Test Method for Hydrogen in Petroleum Fractions is the initial temperature of the fuel and the oxygen, and the
D3701 Test Method for Hydrogen Content of Aviation final temperature of the products of combustion.
TurbineFuelsbyLowResolutionNuclearMagneticReso-
3.1.3 The following relationships may be used for convert-
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nance Spectrometry ing to other units (conversion factor is exact only for Btu):
D4809 Test Method for Heat of Combustion of Liquid
1 cal (International Table calorie) = 4.1868 J
1 Btu (British thermal unit) = 1055.06 J
Hydrocarbon Fuels by Bomb Calorimeter (Intermediate
1 cal (I.T.)/g = 0.0041868 MJ/kg
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Precision Method)
1 Btu/lb = 0.002326 MJ/kg
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E1 Specification for ASTM Thermometers
3.2 Definitions of Terms Specific to This Standard:
E200 Practice for Preparation, Standardization, and Stor-
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3.2.1 energy equivalent—(effective heat capacity or water
age of Standard Solutions for Chemical Analysis
equivalent)ofthecalorimeteristheenergyrequiredtoraisethe
temperature 1° expressed as MJ/°C.
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This test method is under the jurisdiction of ASTM Committee D-2 on
1MJ/kg51000J/g (1)
PetroleumProductsandLubricantsandisthedirectresponsibilityofSubcommittee
D02.05 on Properties of Fuels, Petroleum, Coke and Oil Shale. In SI the unit of heat of combustion has the dimension J/kg,
Current edition approved Dec. 10, 2000. Published January 2001. Originally
but for practical use a multiple is more convenient.The MJ/kg
e2
published as D240–57T. Last previous edition D240–87 (1997) .
is customarily used for the representation of heats of combus-
2
Annual Book of ASTM Standards, Vol 05.01.
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tion of petroleum fuels.
Annual Book of ASTM Standards, Vol 05.02.
4
Annual Book of ASTM Standards, Vol 14.03.
5 NOTE 1—Theenergyunitofmeasurementemployedinthistestmethod
Annual Book of ASTM Standards, Vol 15.05.
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