炉内弥散介质辐射传递特性及燃烧过程优化控制研究

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1、浙江大学博士学位论文炉内弥散介质辐射传递特性及燃烧过程优化控制研究姓名：黄群星申请学位级别：博士专业：工程热物理指导教师：池涌;严建华20050601浙江大学博士学位论文Abstr。actAstheworldeconomicgrowing，energyandenvironmentproblemshavebeenmoreseriousthaneverespeciallyforourdevelopingcountries．Astheprimarycoal·firingpowerplantboilermodel，300MWecomer-firingtangentialboilersh

2、avebeenthemainlyfossilfuelconsumerandaircontaminationsproducer．Thestability,efficiencyandsafetyoperationoftheboilercombustionprocessiSall-importantforoBrcountry’Scontinualeconomicdevelopment．Duringthelastseveralyearsmanyopticalmeasurementandanalysistechniqueshavebeenin拄oducedfornon-invadeboi

3、lerinternalcombustionprocessdiagnostic，suchasboiler-section-temperaturedistributionreconstructionbasedonflameimages．AndalsosomeartificialinteUigencetechniqueshavebeenusedforeombustionoptimizingsuchasneuralnetworksandetc．Theobjectofthispaperistoestablishanexpertsystemforboilercombustionoperat

4、ionoptimizingbasedontheradiativepropertyoftheboilerinsideparticulatemediaintegratedwitllboileroperationparameterssuchasboiler10ad，drumpressureandalSO．ThetadiativepropertyoftheSOlidparticlesinsidetheboilerwerecalcutatedanddiscussedbasedonRayleighandMiescatteringtheories．Theaffectionofthecompl

5、exrefractiveindexfordifierentradiusdistributionparticlecloudswasanalysis．Thebandmodelandline-by-linemodelhavebeenusedtocalculatedtheabsorptioncoefficiemofmoleculargases，andalSOthetemperatureandpressuresbandwideneffectwerediscussed．Basedonthediscussedresults．multi-wavelengthextinctionmethodin

6、tegratedwithmodifiedevolutionprogramWasprovidedforparticlesradiusdistributionsizing．AndadiodetunablelaserdetectorWaSusedtomeasurethegasconcentrationbygasmolecularspectrum-Iinebroadenmechanism．InthiSpaper．thebackwardMonteCarlomethodwasimprovedtoanalysisthetadiativeintensityreceivedbythedetect

7、orloeatedattheboilerwatercoolerwallsbasedontheoutrIutoftheCFDsimulationTheBPneuralnetwork’Sfastmappingtechniquesandinterpolatedfilteredbackprojectionalgorithmwereintroducedforon·linesectiontemperature．distributiondiagnostic．Inthispaperanexpertsyste