ASTM_D_2015_-_96_scan.pdf

l Designation:D 2015-96 Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic Bomb Calorimeter1 This standard is issued under the fixed designation D 20 IS;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year oflast revision.A number in parentheses indicates the year oflast reapproval.A superscript epsilon(E)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.Consult the DoD Index of Specifications and Standards for the specific year of issue which has been adopted by the Department of Defense.1.Scope 1.1 This test method covers the determination of the gross calorific value of coal and coke by the adiabatic bomb calorimeter.1.2 The values stated in SI units and British thermal units are to be regarded as the standard.The values given in parentheses are for information only.1.3 This standard does not purport to address the safety concerns,if any,associated with its use.It is the responsi-bility 0/the user of this standard to establish appropriate safety and health practices and determine the applicability 0/regulatory limitations prior to use.For specific.hazard statements see Section 8.1.4 All accountability and quality control aspects of Guide D 4621 apply to this standard.2.Referenced Documents 2.1 ASTM Standards:D 121 Terminology of Coal and Coke2 D 346 Practice for Collection and Preparation of Coke Samples for Laboratory Analysis2 D 1193 Specification for Reagent Water3 D 2013 Method of Preparing Coal Samples for Analysis2 D 3173 Test Method for Moisture in the Analysis Sample of Coal and Coke2 D 3177 Test Methods for Total Sulfur in the Analysis Sample of Coal and Coke2 D 3180 Practice for Calculating Coal and Coke Analyses.from As-Determined to Different Bases2 D 4239 Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High Temperature Tube Furnace Combustion Methods2 D 4621 Guide for Accountability and Quality Control in the Coal Analysis Laboratory2 E 1 Specification for ASTM Thermometers4 E 144 Practice for Safe Use of Oxygen Combustion Bombs5 I This test method is under the jurisdiction of ASTM Committee D-5 on Coal and Coke and is the direct responsibility of Subcommittee 005.21 on Methods of Analysis.Current edition approved July 10,1996.Published September 1996.Originally published as D 2015-62 T.Last previous edition D2015-95.2 Annual Book of ASTM Standards,Vol 05.05.3 Annual Book of ASTM Standards,Vol 11.01.4 Annual Book of ASTM Standards,Vol 14.03.5 Annual Book of ASTM Standards,Vol 14.02.253 3.Terminology 3.1 Definitions:3.1.1 calorific value,n-the heat produced by combustion of a unit quantity of a substance under specified conditions.3.1.1.1 Discussion-It is expressed in this test method in British thermal units per pound(Btu/lb).Calorific value may also be expressed in calories per gram(cal/g)or in the International System of Units(SI),joules per gram(Jig),when required.The unit equivalents are given in Table 1.3.1.2 gross calorific value(gross heat of combustion at constant volume)Qv(gross)-see Terminology D 121.3.1.3 net calorific value(net heat 0/combustion at con-stant pressure)Qp(net)-see Terminology D 121.3.1.4 calorimeter-as used in this test method,consists of the bomb and its contents,the calorimeter vessel(bucket)with stirrer,the water in which the bomb is immersed,and the portions of the thermometer and the ignition leads within the calorimeter vessel.3.2 Descriptions o/Terms Specific to This Standard:3.2.1 corrected temperature rise-the temperature change of the calorimeter caused by the process that occurs inside the bomb,that is,the observed temperature change corrected for various effects as noted in 10.4.1.NOTE I-Temperature is measured in either degrees Celsius or degrees Fahrenheit.Thermometer corrections should be applied.Tem-peratures may be recorded in ohms or other arbitrary units instead of degrees.Consistent units must be used in standardization and the actual calorific value determination.If.arbitrary units other than degrees Celsius or Fahrenheit are used,the temperature interval over which all tests are made,must not vary somuch that an error greater than O.OOIC would be caused.3.2.2 energy equivalent;heat capacity,or water equiva-lent-the energy required to raise the temperature of the calorimeter one arbitrary unit.This is the quantity that,when multiplied by the corrected temperature rise,then adjusted for extraneous heat effects,and divided by the mass of the sample,gives the gross calorific value.NOTE 2-Energy units for quantities listed throughout this test method are such that the number of energy units per gram of sample corresponds exactly to the number of British thermal units per pound of sample.For brevity these are referred to as British thermal units.The actual energies are smaller than those stated by the ratio of the number of pounds