ASTM_D_240_-_19.pdf

Designation:D24019Standard Test Method forHeat of Combustion of Liquid Hydrocarbon Fuels by BombCalorimeter1This standard is issued under the fixed designation D240;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination of the heat ofcombustion of liquid hydrocarbon fuels ranging in volatilityfrom that of light distillates to that of residual fuels.1.2 Under normal conditions,this test method is directlyapplicable to such fuels as gasolines,kerosines,Nos.1 and 2fuel 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 asreproducible as Test Method D4809.1.4 The values stated in SI units are to be regarded asstandard.The values in parentheses are for information only.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific hazard statements,see Sections 7 and 9 and A1.10and Annex A3.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D129 Test Method for Sulfur in Petroleum Products(Gen-eral High Pressure Decomposition Device Method)D1018 Test Method for Hydrogen In Petroleum FractionsD1266 Test Method for Sulfur in Petroleum Products(LampMethod)D1552 Test Method for Sulfur in Petroleum Products byHigh Temperature Combustion and Infrared(IR)Detec-tion or Thermal Conductivity Detection(TCD)D2622 Test Method for Sulfur in Petroleum Products byWavelength Dispersive X-ray Fluorescence SpectrometryD3120 Test Method for Trace Quantities of Sulfur in LightLiquid Petroleum Hydrocarbons by Oxidative Microcou-lometryD3701 Test Method for Hydrogen Content of AviationTurbine Fuels by Low Resolution Nuclear MagneticResonance SpectrometryD4294 Test Method for Sulfur in Petroleum and PetroleumProducts by Energy Dispersive X-ray Fluorescence Spec-trometryD4809 Test Method for Heat of Combustion of LiquidHydrocarbon Fuels by Bomb Calorimeter(PrecisionMethod)D5453 Test Method for Determination of Total Sulfur inLight Hydrocarbons,Spark Ignition Engine Fuel,DieselEngine Fuel,and Engine Oil by Ultraviolet FluorescenceD7171 Test Method for Hydrogen Content of Middle Dis-tillate Petroleum Products by Low-Resolution PulsedNuclear Magnetic Resonance SpectroscopyE1 Specification for ASTM Liquid-in-Glass ThermometersE200 Practice for Preparation,Standardization,and Storageof Standard and Reagent Solutions for Chemical Analysis3.Terminology3.1 Definitions:3.1.1 gross heat of combustion,Qg(MJ/kg),nthe quantityof energy released when a unit mass of fuel is burned in aconstant volume enclosure,with the products being gaseous,other than water that is condensed to the liquid state.3.1.1.1 DiscussionThe fuel can be either liquid or solid,and contain only the elements carbon,hydrogen,nitrogen,oxygen,and sulfur.The products of combustion,in oxygen,aregaseous carbon dioxide,nitrogen oxides,sulfur dioxide,andliquid water.In this procedure,25 C is the initial temperature1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.05 on Properties of Fuels,Petroleum Coke and Carbon Material.Current edition approved Nov.1,2019.Published December 2019.Originallyapproved in 1957.Last previous edition approved in 2017 as D240 17.DOI:10.1520/D0240-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 of the fuel and the oxygen,and the final temperature of theproducts of combustion.3.1.2 net heat