ASTM_D_5865_-_D_5865M_-_19.pdf

Designation:D5865/D5865M19Standard Test Method forGross Calorific Value of Coal and Coke1This standard is issued under the fixed designation D5865/D5865M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript 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 combustion calorimeter.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently of the other,and values from the twosystems shall not be combined.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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific hazard statements are given in Section 8.1.4 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: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in the Analysis Sample ofCoal and CokeD3177 Test Methods for Total Sulfur in theAnalysis Sampleof Coal and Coke(Withdrawn 2012)3D3180 Practice for Calculating Coal and Coke Analysesfrom As-Determined to Different BasesD4239 Test Method for Sulfur in the Analysis Sample ofCoal and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 ObservationsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE882 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 calorimeter,na calorimeter that operatesin the adiabatic mode and may or may not use a microproces-sor;the initial temperature before initiating the combustion andthe final temperatures are recorded by the operator or themicroprocessor.3.2.2 automated calorimeter,na 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 Btu,nthe amount of heatrequired to raise the temperature of one pound-mass lbm ofliquid water at one atmosphere pressure one degree Fahrenheitat a stated temperature.3.2.3.1 DiscussionThe 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 used in1This 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 June 1,2019.Published August 2019.Originallyapproved in 1995.Last previous edition approved in 2013 as D5865 13.DOI:10.1520/D5865_D5865M-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.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 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 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 value,nthe heat produced by combusti