燃机极好的学习资料.ppt

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1、9E燃机极好的学习资料1Index目录GasTurbinePrinciple&GeneralIntroduction燃机原理及概况2.GasTurbineStructure燃机本体结构3.GasTurbineAccessorySystems燃机附属系统4.GasTurbineControlSystem燃机控制系统GasTurbineShipmentWeight&Dimension燃机运输重量及尺寸6.GasTurbineErectionProcedure燃机安装步骤7.GasTurbineCommissioningProcedure燃机调试规程8.GasTurbin

2、ePerformanceProcedure燃机性能试验规程2PhysicsPrincipleofConservationofMass:massin=massout(OpenSystem)PrincipleofConservationofEnergy:energyin=energyoutenergymaybetransformedfromoneformtoanother(PowerPlantconvertsChemicaltoThermaltoMechanicaltoElectricalEnergy)3FirstLawofThermodynamicsQ=727MWW=

3、281MWExample:9FBEnergyBalanceDH4-1=446MWWhere:DH=totalenthalpychangefluidenteringsystemQ=netthermalenergyflowingintosystemduringprocessW=networkdonebythesystemGeneralEnergyEquationenergyin=energyout,orQ=W+DH4SecondLawofThermodynamics-AmountofenergywhichisunavailabletodoworkAmeasureofdi

4、sorderEntropy:BasicPrinciple:Heatmovesfromhottocold5Note:sdenotesentropyIdealBraytonCycleGasTurbineApplication)T(T)T(T)T(THeatContent(Fuel)WorkOutput(MW)231243Cycle----==h6RealBraytonCycleCompressionandTurbineExpansionInefficienciesTypicalValuesforGETurbinesCompressorEfficiency0.86-0.8

5、9TurbineEfficiency0.90-0.93EntropyTemperaturePeakCyclePressureMinimumCyclePressureCompressionTurbineExpansionConstantPressureHeatAdditionConstantPressureHeatRejectionIdealCycleWithhc&htLEGEND12347RealBraytonCyclePressureLosses-Inlet,Combustor,ExhaustTypicalValuesforTurbineInletPressure

6、Loss3”H2OExhaustBackPressure(SC)5.5”H2OExhaustBackPressure(CC)15”H2ODLNCombustor6-7%DP/PInletExhaustCombustor23148RealBraytonCycleParasiticFlowsforTurbineCoolingEntropyTemperatureCompressorDischargePressureAmbientPressureCompressionExpansionHeatAdditionHeatRejectionCombustorDPExhaustDP

7、InletDPStg1CoolingStg2CoolingStg3CoolingIdealCycleWithhc&htWithDP’sWithCoolingFlowsLEGENDStg1NozzleCooling41239COMPRESSORQADDEDExchangerHeatBurnPH=ConstantQin33EntropySuckSqueezeCompression1212TemperatureExpansionCOMPRESSORShaftWorkTURBINEQREJECTEDBlowTurnPL=ConstantQout44TURBINETheT