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1、FuelsandCombustion1RecommendedBooksFuelsandCombustion;M.L.Smith&K.W.StinsonFuelsandFuelTechnology;W.Francis&M.C.PetersFuel–Solid,LiquidandGaseous;J.S.S.Brame&J.G.KingHydrocarbonFuels;E.M.GoodgerCoalConversionProcesses;Stanley&LeeFuelTesting:LaboratoryMethodsinFuelTe
2、chnology;G.W.HimusMethodsofAnalysisofFuelsandOils;J.R.Campbell2FuelAsubstancewhichproduceheateitherbycombustionorbynuclearfission/fusion3ClassificationofFuelsFuelscanbeclassifiedassolid,liquidandgaseousfuels.Solidfuels:wood,coal,charcoalandcokeLiquidfuels:petrol,ker
3、osene,diesel,alcoholetcGaseousfuels:methane,propane,butane,hydrogen,coalgas,gobargasetc4ClassificationofFuelsPrimaryFuels:Naturallyoccuinge.g.coal,wood,naturalgasSecondaryFuels:Whicharederivedfromprimaryfuelse.g.kerosene,cokeetcNaturallyoccurringArtificiallyprepared
4、5CombustionCombustionistheconversionofasubstancecalledafuelintochemicalcompoundsknownasproductsofcombustionbycombinationwithanoxidizer.Thecombustionprocessisanexothermicchemicalreaction,i.e.,areactionthatreleasesenergy???6CombustionCombustionorburningisacomplexseque
5、nceofexothermicchemicalreactionsbetweenafuel(usuallyahydrocarbon)andanoxidantaccompaniedbytheproductionofheatorbothheatandlight7CombustionFuel+Oxidizer=>Productsofcombustion+EnergyFuel?Oxidizer?ProductsofCombustion?IncompleteCombustion?8BasicFlametypesPremixed:Fuela
6、ndoxidizeraremixedfirstandburnedlaterNon-premixed:CombustionandmixingoccursimultaneouslyFundamentalDefinitions9CombustionAir-FuelRatio;A/FOxygen-FuelRatio;O/FStoichiometricorTheoreticalA/FExcessAir%excessair=100[(A/F)actual-(A/F)theo]/(A/F)theo120%oftheoreticalair?F
7、uel-Richflame:IfthereisanexcessoffuelFuel-leanflame:ifthereisanexcessofoxygen10Combustion1kgofCneeds?kgofO21kgofH2needs?KgofO21kgofSulphurneeds?kgofO211CombustionProblem:Afuelcontainsbymass88%carbon,8%H2,1%Sand3%ash.Calculatethestoichiometricair/fuelratio.Ans:?12Fun
8、damentalDefinitionsCalorificvalueAmountofheatlibratedbythecombustionofunitquantityoffuel.kcal/kg,kcal/m3GrossCalorificValue(G.C.V)orHCVhea
