2025/6/21110.2Characteristicsofheattransferinfurnaces
§10-2锅炉炉膛内传热的特点Furnacedimension燃料燃烧的空间(体积、高度)Heattransfermode传热方式（对流、辐射）Hightemp温度高（以对流为主）Ashcontent灰分（固体燃料）Flamecharacteristics火焰(火焰、灰粒、焦粒)Gasflowturbulence气流扰动(与燃烧器布置有关)
2025/6/21210.3Arrangementofradiantheatingsurfaces
§10-3炉膛辐射受蒸发热面的结构与布置1.Structureofwater-cooledwall水冷壁结构Functionofwater-cooledwall水冷壁的作用Protectfurnacewall保护炉墙Enhanceheattransfer强化换热Lowboilermetalconsumptionandcost降低锅炉金属耗量与造价
2025/6/21310.3Arrangementofradiantheatingsurfaces
§10-3炉膛辐射受蒸发热面的结构与布置Typeofwater-cooledwall水冷壁的型式光管水冷壁baretubeLowpressure低压锅炉：φ51×2.5mmMediumpressure中压锅炉：φ60×3mmHighpressure高压锅炉：φ51×5mm鳍片管水冷壁(膜式水冷壁)membranes/d=1.3~1.5Effectiveconfigurationfactor 有效辐射角系数:χ=1se
2025/6/21410.3Arrangementofradiantheatingsurfaces
§10-3炉膛辐射受蒸发热面的结构与布置2.Determinationoffurnacegeometricalcharacteristics炉膛几何特性尺寸的确定Procedure基本步骤Basedonboilercapacity,steamparameter(T,P),fuelandcombustionmethod,calculateBandQnet,ar,p 根据锅炉容量、蒸汽参数、燃料特性及燃烧方式，确定B和Qnet,ar,p.ChoseqR,qVorqF、qV,andcalculateR,VlorF,VlandHl.选定qR、qV或qF、qV，再确定：R、Vl或F、Vl及Hl；Calculatethewideanddeepoffurnace,anddeterminatetheperformancedimensions 最后确定：炉膛宽度和炉膛深度，制定炉膛几何特性尺寸。
2025/6/21510.3Arrangementofradiantheatingsurfaces
§10-3炉膛辐射受蒸发热面的结构与布置2)Furnacecharacteristicdimensions炉膛几何特性Furnacevolume:thevolumebetweenfurnacebaseandfurnaceoutlet.炉膛容积Vl:炉子火床表面至出口烟窗间的容积Bottom底部—火床表面炉膛出口截面—出口烟窗第一排水管中心线所在表面Fourwallandtopwall四周及顶部Surroundingsurfaceoffurnace,Fl:炉膛周界面积Fl:包围炉膛容积的所有周界封闭面积的总和Fire-bedarea火床面积RFbz－除火床以外的其他炉膛周界面积全部水冷壁面积Fi=bili炉墙面积：前后墙、侧墙、炉顶;???出口烟窗面积
2025/6/21610.3Arrangementofradiantheatingsurfaces
§10-3炉膛辐射受蒸发热面的结构与布置pp.215-216图9-3，图9-4
2025/6/21710.3Arrangementofradiantheatingsurfaces
§10-3炉膛辐射受蒸发热面的结构与布置3.Effectiveradiantheatingsurface有效辐射受热面的面积HfseEffectiveradiantconfigurationfactor
2025/6/21810.3