电站锅炉高温对流受热面管壁温度的校核算法

223176820026POWERENGINEERINGVol.22No.3June2002:100026761(2002)0321768204,,,(,071003):,,,,,335:;;:TK212:A:2000208204:2001209221:(1955.12-),,,60,10,,,,,,(73)[1],(1),((2)),,tb=tgz+$tS+BLqmaxDK11+B+1A2(1)tgz,CLBD,mmK,WömCA2,WömCqmax,WömC$ix=GkBjQqdDzj(2)GkQqdkg,kJökgBj,kgöhDzj,kgöhQqd=Qdqd+QfqdQdqd,kJökgQfqd,kJökg,,,,,,;,;,[2,3],,,,,(1):,,(),,:,,(),,,,,,,,,,1:,(),()(),(),,,[4],,(),,,,,,,,,(1),,,,2400töh[5]42mm5.5mm,104,90mm,51,1,(1)(2),13,(1),,,();12112345(m)17.5717.3917.3617.7218.46(kgös)0.18820.18850.18810.18710.1829967132C475MPa2.6C809C540MPa2.45C7141C570kWöm214.711kWöm221.03(2),,;(3)10,2(2),,,(3);(4),,(2),3;3312345678910m1.4983.383.380.2630.2630.2630.2633.383.381.498m200.4460.4460.0350.0350.0350.0350.4460.4460Wöm2Cö11101089107610741073107210641053öCö775860900875825800760690öWöm2Cö77.776.976.74140.57070.571.3öWöm2Cö21.723.928.324.223.122.322.120.6öCö289.5352380354302275223131ökWöm2ö24.0729.7333.2619.8716.6421.5918.0011.72öC475475500531534536537539558570qmaxkWöm231.7739.3043.9126.2321.9728.5123.7615.460771224ABCDEFGHIC542584594572568579591592(5),(1),,3;(6)(1),434,594CD,,,,,,F,,,:,,,,4,:,,,:[1].[M].,1976.[2],,.[J].,1995,15(2):14.[3].[J].,1992(3):111.[4]BA.,.[M].,1981.[5],.[M].,1991.CalibrationMethodforCalculatingTubeWallTemperatureofTheHighTemperatureConvectiveHeatTransferSurfaceinTheUtilityBoilersYANWei2ping,CHENHua2gui,YEXue2min,LIANGXiu2jun(NorthChinaElectricPowerUniv.,Baoding071003,China)Abstract:Anovelmethodforestimatingthehighesttubewalltemperatureoftheconvectiveheattransfersurfaceisproposed.Thismethodtakesintoaccountthethermalrestrictiveconditionbasedontheenergyandmassbalanceforthetubeconcerned.Theadvantageoftheproposedmethodoverthepreviousmethodthatcannotbecalibratedaccordingtotheactualconditionsisalsodiscussed.Thees2timatedresultsaremorereasonableandagreewiththepracticalsituations.Theprincipleandcalcula2tionproceduresforestimatingthetubewalltemperatureareoutlined.Thecalculatingprocedureisal2sodemonstratedbyusingasuperheaterasdatasource.Theproposedmethodisofimportanceinim2provingtheheattransfersurfacedesignandtheon2linemonitoringmethodoftubewalltemperature.Figs3,tables3andrefs5.Keywords:stationboiler;convectiveheattransfersurface;tubewalltemperaturecalculation17713