ASTM_D_5865_-_13.pdf

Designation:D586513Standard Test Method forGross Calorific Value of Coal and Coke1This standard is issued under the fixed designation D5865;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.1.Scope*1.1 This test method pertains to the determination of thegross calorific value of coal and coke by either an isoperibol oradiabatic bomb calorimeter.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 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 and health practices and determine the applica-bility of regulatory limitations prior to use.Specific hazardstatements are given in Section 8.2.Referenced Documents2.1 ASTM Standards:2D121 Terminology of Coal and CokeD346 Practice for Collection and Preparation of CokeSamples for Laboratory AnalysisD388 Classification of Coals by RankD1193 Specification for Reagent WaterD2013 Practice for Preparing Coal Samples for AnalysisD3173 Test Method for Moisture in the Analysis Sample ofCoal and CokeD3177 Test Methods for Total Sulfur in theAnalysis Sampleof Coal and Coke(Withdrawn 2012)3D3180 Practice for Calculating Coal and Coke Analysesfrom As-Determined to Different BasesD4239 Test Method for Sulfur in the Analysis Sample ofCoal and Coke Using High-Temperature Tube FurnaceCombustionD7582 Test Methods for Proximate Analysis of Coal andCoke by Macro Thermogravimetric AnalysisE144 Practice for Safe Use of Oxygen Combustion VesselsE178 Practice for Dealing With Outlying ObservationsE882 Guide for Accountability and Quality Control in theChemical Analysis LaboratoryE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision Liquids3.Terminology3.1 For additional definitions of terms used in this testmethod,refer to Terminology D121.3.2 Definitions:3.2.1 adiabatic calorimetera calorimeter that operates inthe adiabatic mode and may or may not use a microprocessor.The initial temperature before initiating the combustion and thefinal temperatures are recorded by the operator or the micro-processor.3.2.2 automated calorimetera calorimeter which has amicroprocessor that takes the thermometric readings and cal-culates the Calibration Value and the Heat of CombustionValues.3.2.3 British thermal unit Btuis the amount of heatrequired to raise the temperature of one pound-mass lbm ofliquid water at one atmosphere pressure one degree Fahrenheitat a stated temperature.The results of combustion calorimetrictests of fuels for steam power plants may be expressed in termsof the 1956 International Steam Table calorie(I.T.cal)whichis defined by the relation,1 I.T.cal=4.1868 J.The Btu usedin modern steam tables is defined by the means of the relation,1 I.T.cal/g=1.8 I.T.Btu/lb.Thus,1 I.T.Btu/lb=2.326 J/g.3.2.4 calorific valuethe heat produced by combustion of aunit quantity of a substance under specified conditions.3.2.5 calorimetera device for measuring calorific valueconsisting of a bomb,its contents,a vessel for holding thebomb,temperature measuring devices,ignition leads,water,stirrer,and a jacket maintained at specified temperature con-ditions.3.2.6 gross calorific value(gross heat of combustion atconstant volume),Qv(gross)the heat produced by completecombustion of a substance at constant volume with all waterformed condensed to a liquid.1This test method is under the jurisdiction of ASTM Committee D05 on Coaland Coke and is the direct responsibility of Subcommittee D05.21 on Methods ofAnalysis.Current edition approved Oct.1,2013.Published October 2013.Originallyapproved in 1995.Last previous edition approved in 2012 as D5865 12.DOI:10.1520/D5865-13.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.*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 States1 3.2.7 heat of formationthe change in heat content result-ing from the formation of 1 mole of a substance from itselements at constant pressure.3.2.8 isoperibol calorimetera calorimeter that operates inthe isoperibol mode and uses a microprocssor to record theinitial and final temperatures and make the appropiate heat leakcorrections during the temperature rise.It determines when thecalorimeter is in equilibrium and ignites the sample anddetermines when the calorimeter has reached equilibrium a