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【英文标准名称】:StandardTestMethodforEstimationofNetHeatofCombustionofAviationFuels
【原文标准名称】:航空燃料燃烧净热值的评价的标准试验方法
【标准号】:ASTMD3338/D3338M-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D02.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aviationfuel;grossheatofcombustion;heatenergy;heatofcombustion;heatingtests;netheatofcombustion;Aviationfuels(heatofcombustion);Combustion--petroleumproducts;Heatingtests--petroleumproducts
【摘要】:Thistestmethodisintendedforuseasaguideincaseswhereexperimentaldeterminationofheatofcombustionisnotavailableandcannotbemadeconvenientlyandwhereanestimateisconsideredsatisfactory.Itisnotintendedasasubstituteforexperimentalmeasurementsofheatofcombustion.Table1showsasummaryfortherangeofeachvariableusedindevelopingthecorrelation.Themeanvalueandanestimateofitsdistributionaboutthemean,namelythestandarddeviation,isshown.Thisindicates,forexample,thatthemeandensityforallfuelsusedindevelopingthecorrelationwas779.3kg/m3andthattwothirdsofthesampleshadadensitybetween721.4and837.1kg/m3,thatis,plusorminusonestandarddeviation.Thecorrelationismostaccuratewhenthevaluesofthevariablesusedarewithinonestandarddeviationofthemean,butisusefuluptotwostandarddeviationsofthemean.Theuseofthiscorrelationmaybeapplicabletootherhydrocarbondistillatesandpurehydrocarbons;however,onlylimiteddataonnon-aviationfuelsovertheentirerangeofthevariableswereincludedinthecorrelation.Note48212;TheproceduresfortheexperimentaldeterminationofthegrossandnetheatsofcombustionaredescribedinTestMethodsD240andD4809.ThecalorimetricmethodscitedinNote4measuregrossheatofcombustion.However,netheatisusedinaircraftcalculationsbecauseallcombustionproductsareinthegaseousstate.Thiscalculationmethodisbasedonnetheat,butacorrectionisrequiredforcondensedsulfurcompounds.TABLE1MeanandStandardDeviationoftheVariablesVariableMeanStandardDeviationAromatics,volume%
13.5
23.9
Density,kg/m3[x00B0;API]
779.3[50.0]
58.0[13.5]
Volatility,x00B0;C[x00B0;F]
171.11[340]
57.2[103]
Heatofcombustion,MJ/kg[Btu/lb]
43.421[18668]
0.862[371]