ASTM E2067-2008 完全氧燃烧热量测量火灾试验的标准实施规程

作者:标准资料网 时间:2024-05-14 04:28:51  浏览:8394   来源:标准资料网

【英文标准名称】:StandardPracticeforFull-ScaleOxygenConsumptionCalorimetryFireTests
【原文标准名称】:完全氧燃烧热量测量火灾试验的标准实施规程
【标准号】:ASTME2067-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E05.21
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:calorimetry;fire;full-scaletest;heatrelease;oxygenconsumption;smoke;Calibration--laboratoryanalysisinstrumentation;Firetesting--buildingmaterials;Full-scaletesting;Heatrelease;Oxygenconsumptioncalorimetry;Smokeanalysis;Smokeobscur
【摘要】:Theoxygenconsumptionprinciple,usedforthemeasurementsdescribedhere,isbasedontheobservationthat,generally,thenetheatofcombustionisdirectlyrelatedtotheamountofoxygenrequiredforcombustion(1).Approximately13.1MJofheatarereleasedper1-kgofoxygenconsumed.Testspecimensinthetestareburnedinambientairconditions,whilebeingsubjectedtoaprescribedexternalheatingsource.Thistechniqueisnotappropriateforuseonitsownwhenthecombustiblefuelisanoxidizeroranexplosiveagent,whichreleaseoxygen.Furtheranalysisisrequiredinsuchcases(seeAppendixX2).Theheatreleaseisdeterminedbythemeasurementoftheoxygenconsumption,asdeterminedbytheoxygenconcentrationandtheflowrateinthecombustionproductstream,inafullscaleenvironment.Theprimarymeasurementsareoxygenconcentrationandexhaustgasflowrate.Additionalmeasurementsincludethespecimenignitability,thesmokeobscurationgenerated,thespecimenmasslossrate,theeffectiveheatofcombustionandtheyieldsofcombustionproductsfromthetestspecimen.Theoxygenconsumptiontechniqueisusedindifferenttypesoftestmethods.Intermediatescale(TestMethodE1623,UL1975)andfullscale(TestMethodD5424,TestMethodD5537,TestMethodE1537,TestMethodE1590,TestMethodE1822,ISO9705,NFPA265,NFPA266,NFPA267,NFPA286,UL1685)testmethods,aswellasunstandardizedroomscaleexperimentsfollowingGuideE603,usingthistechniqueinvolvealargeinstrumentedexhausthood,whereoxygenconcentrationismeasured,eitherstandingaloneorpositionedoutsideadoorway.Alargetestspecimenisplacedeitherunderthehoodorinsidetheroom.Thispracticeisintendedtoaddressissuesassociatedwithequipmentrequiringalargeinstrumentedhoodandnotstand-alonetestapparatuseswithsmalltestspecimens.Smallscaletestmethodsusingthistechnique,suchasTestMethodsD6113,E1354,E1474andE1740,aswellasISO5660internationally,arebasedonastand-aloneapparatus,whereinasmallspecimenistestedwithintheequipment.Anothersmallscaleheatreleasetestmethod,TestMethodE906,doesnotusetheoxygenconsumptiontechnique.Throughoutthispractice,testequipmentisreferencedtoprovidehelpfulguidancetotestfacilities.Substitutionofequivalent,orbetter,testmeasuringdevicesispermissible.1.1Thispracticedealswithmethodstoconstruct,calibrate,andusefullscaleoxygenconsumptioncalorimeterstohelpminimizetestingresultdiscrepanciesbetweenlaboratories.1.2ThemethodologydescribedhereinisusedinanumberofASTMtestmethods,inavarietyofunstandardizedtestmethods,andforresearchpurposes.Thispracticewillfacilitatecoordinationofgenericrequirements,whicharenotspecifictotheitemundertest.1.3Theprincipalfire-test-responsecharacteristicsobtainedfromthetestmethodsusingthistechniquearethoseassociatedwithheatreleasefromthespecimenstested,asafunctionoftime.Otherfire-test-responsecharacteristicsalsoaredetermined.1.4Thispracticeisintendedtoapplytotheconductionofdifferenttypesoftests,includingbothsomeinwhichtheobjectiveistoassessthecomparativefireperformanceofproductsreleasinglowamountsofheatorsmokeandsomeinwhichtheobjectiveistoassesswhetherflashoverwilloccur.1.5Thispracticedoesnotprovidepass/failcriteriathatcanbeusedasaregulatorytool,nordoesitdescribea......
【中国标准分类号】:C80
【国际标准分类号】:17_200_20
【页数】:24P.;A4
【正文语种】:英语