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炉膛，后屏过热器(l,hp)对流过热器(dlgr)高温再热器(gzr)低温再热器，旁路省煤器(dzr,psm)主省煤器(sm)空气预热器(ky)进口c'1.21.251.281.311.34漏风a0.050.030.030.030.2出口a1.21.251.281.311.341.54表3-1空气平衡表项目名称符号单位l,hpdlgr烟道进口过量空气系数a'1.21.2烟道出口过量空气系数a1.21.25烟道平均过量空气系数apj1.21.225过剩空气量ΔVNm3/kg1.2154001.367325水蒸汽容积VH2ONm3/kg0.5439940.546619烟气总容积VyNm3/kg8.1723948.326944RO2气体占烟气容积分额rRO20.1536880.150836水蒸汽占烟气容积分额rH2O0.0665650.065645三原子气体和水蒸汽占烟气容积总分额rn0.2202530.216480烟气质量Gykg/kg11.08444411.297322飞灰无因次浓度μhkg/kg0.0108560.010651表3-2烟气特性表gzrdzr,psmsmky1.251.281.311.341.281.311.341.541.2651.2951.3251.44C66.731.6104051.7927151.9750252.673880H2.950.5508180.5539670.5571160.569188O7.288.5742238.7596828.9451419.656068N0.760.1464860.1433840.1404110.130074S1.570.0642410.0632410.0622810.058946A13.370.2107270.2066250.2026930.189020M7.3411.63792711.89338012.14883413.128073V29.840.0103390.0101170.0099050.009166表3-2烟气特性表V06.5201514295.901VN205.156999629VRO21.256167875VH2000.5227884230.577VYO6.9359559266.329h3Hyh4Hy1100922802220018691616330028442449440038463294550048774157591666005934504469431264719577007018594382071291850488008126686194981312984199009252779110810133111200101000103978720121411356125771111001155896931349713681398212120012734106531486513871539713130013926116311625213961683314140015124126161764814081827815150016335136061905614191973616160017554146032047514282120517170018783156002190314352268318180020018166022333914352416919190021259175752477414572565320200022504186322623114612716221210023761196532769114572867422220025014206742914930182表4-3烟气焓温表顺序烟气(或空气)温度(.C)理论烟气的焓Hoy(kj/kg)理论空气的焓飞灰的焓烟气的焓炉膛,后屏过热器al,kp=1.2对流过热器adlgr=1.25h5Hyh6Hyh7Hyh8Hyh9HyCO2N2127513551.70031.29582419258127421.78731.299636033676392141661.86271.3067476948674966529656251.92971.3163604161656290670671211.98871.32767346749876492.04111.3402868288612.08841.353610047102532.13111.367011433116672.16921.3795128382.20351.39172.23491.40342.26381.41432.28981.42522.31361.43482.33541.44402.35551.45282.37341.46122.39151.46872.40741.47592.42211.48252.43591.48932.44841.4951空预器冷段aky(l)=1.54高温再热器agzr=1.28低温再热器,旁路省煤器adzr,psm=1.31主省煤器asm=1.34表4-3烟气焓温表烟气的焓空预器热段aky®=1.44H2OCK1.50521321.52232661.54244031.56545421.58976841.61488301.64129781.668011291.695612821.722914351.750115951.776917531.802819141.828020761.852722391.876124031.899625671.921327321.942328921.962830661.982532342.00093402序号名称符号单位计算公式或数据来源1燃料带入热量QrkJ/kgQydw2排烟温度θ。C假定3排烟焓HpykJ/kg查焓温表3-34冷空气温度tlk。C给定5理论冷空气焓H0lkkJ/kg查焓温表3-36机械不完全燃烧热损失q4%取用7化学不完全燃烧热损失q3%取用8排烟热损失q2%Q2/Q1=[（Hpy-apyHolk)*(1-q4/100)]*100/Qr9散热损失q5%查图2-1510灰渣物理热损失q6%AyQydw/419忽略11保热系数φ%1-q5/10012锅炉总热损失Еq%q2+q3+q4+q5+q613锅炉热效率ηgl%100-q14过热蒸汽焓hgrkJ/kg查蒸汽特性表，p=13.83Mpa,t=540。C15给水焓hgskJ/kg查水特性表，p=15.68Mpa,t=235。C16过热蒸汽流量Dgrkg/h已知17再热蒸汽出口焓hzrkJ/kg查蒸汽特性表，p=2.45Mpa,t=540。C18再热蒸汽进口焓h'zrkJ/kg查蒸汽特性表，p=2.6Mpa,t=330。C19再热蒸汽流量Dzrkg/h已知20再热蒸汽焓增量kJ/kghzr-h'zr21锅炉有效利用热QglkJ/hDgr(hgr-hgs)+Dzr(hzr-h'zr)22实际燃料消耗量Bkg/hQgl/(hgl*Qr)23计算燃料消耗量Bjkg/hB(1-q4/100)表3-4锅炉热平衡及燃料消耗量计算数据229001482021.0753820160.4328207.590.3800.99629.9790.0334341016.44200003551.43078.3350000473.111809770005728356138表3-4锅炉热平衡及燃料消耗量计算序号名称符号W/m31热空气温度trk。C2理论热空气焓H.rkkJ/kg3炉膛漏风系数△al4制粉系统漏风系数△alf5冷空气温度tlk。C6理论冷空气焓HorkkJ/kg7空预器出口过量空气系数βky8空气带入炉内热量QkkJ/kg91kg燃料带入炉内的热量QlkJ/kg10理论燃烧温度θa。C11炉膛出口烟温θl。C12炉膛出口烟焓HlkJ/kg13烟气的平均热容量VcpjkJ/(kg..C)14水蒸汽容积份额rH2o15三原子气体容积份额rn16三原子气体分压力pnMpa17Pn与S的乘积pnsm.Mpa18三原子气体辐射减弱系数Ky1/(m.Mpa)19灰粒子辐射减弱系数Kh1/(m.Mpa)20焦碳粒子辐射减弱系数Kj1/(m.Mpa)21无因次量X122无因次量X223半发光火焰辐射减弱系数KP1/(m.Mpa)24乘积KpS25炉膛火焰有效黑度ahy26乘积pnSzym.Mpa27自由容积内三原子气体辐射减弱系数Ky1/(m.Mpa)28乘积kpszy表3-9炉膛热力计算（带前屏过热器）29自由容积的火焰有效黑度azy30乘积pnspqm.Mpa31屏间容积内三原子气体辐射减弱系数Ky1/(m.Mpa)32温度KpSpq33屏间容积的火焰有效黑度apr34屏宽A与Sxy比值A/Szy35屏宽A与屏节距之比ω36屏的修正系数Cp37屏区的修正系数Cpq38系数ζa39屏的辐射系数Ψp40屏区的辐射系数Ψpq41屏的黑度ap42屏区的黑度apq43屏的暴光不均匀系数zp44屏区水冷壁的暴光不均匀系数zpq45计及暴光不均匀的屏的面积A'qpm246计及暴光不均匀的屏区面积A'pqm247炉墙总面积Alqm248前后侧墙水冷壁的沾污系数ζ49屏的沾污系数ζp50炉顶包覆管沾污系数ζld51炉膛出口屏的沾污系数ζch52前后侧墙水冷壁的热有效系数ψ53炉顶包覆管的热有效系数ψld54屏的热有效系数ψp55炉膛出口处的屏的热有效系数ψch56平均热有效系数ψpj57炉膛黑度al58与炉内最高温度位置有关的系数M59炉膛出口烟温θl。C60炉膛出口烟焓HLkj/kg61炉膛吸热量QfLkJ/kg62炉膛容积热强度qvW/m363炉膛截面热强度QfW/m264炉内平均辐射热强度qpgl65炉顶辐射吸热分布系数ηldW/m266炉顶辐射热强度qldm267炉顶辐射受热面积A'ldW68炉顶吸热量QldWkj/kg69前屏辐射吸热分布系数ηqp70前屏辐射吸热量qqpW/m271前屏吸热量Qqpkj/kg72后屏副射吸热分布系数hhp73后屏辐射热强度qhp74后屏吸热量Qhpkj/kg75附加过热器总吸热量kj/kg76一级减温水量Djw177二级减温水量Djw278附加过热器焓增量ΣΔhfjkj/kg79饱和蒸汽焓hbqkj/kg80包覆出口蒸汽焓hbfkj/kg81包覆出口蒸汽温度tbf。C82前屏焓增量Δhqpkj/kg83前屏出口蒸汽焓hqpkj/kg84前屏出口蒸汽温度tqp。C85炉膛出口烟温校核Δθl。C计算公式或数据来源数值给定330查焓温表3-32702.442由空气平衡表3-1知0.05选用0.06给定20查焓温表3-3160.4328al-(Δal+Δazf)1.09βkyHork+(Δal+Δazf)Holk2963QR*(100-q3-q4-q6)/(100-q4)+QK25863根据Ql查焓温表3-31974.852假定1150查焓温表3-314180.81(Ql-Hl)/(θa-θl)14.16314查烟气特性表3-20.0792查烟气特性表3-20.2228prap=0.098MPa0.021834Pn*6.6460.14510(0.78+1.6rH2O/sqrt(10Pn*6.646)-0.1)*(1-0.37T1/1000)3.09184255900/(Tl2dh2)1./379.91831取用10按参考文献[1]选取0.5按参考文献[1]选取0.1Kyrn+Khμh+Kfx1x22.92309Kp*6.6461.9038321-e-kp*6.6460.851003pnSzy0.14126910(0.78+1.6rH2O)/sqrt(10Pn*6.47)-0.1)(1-0.37T1/1000)3.138622(Kyrn+Khuh+Kfx1x2)*0.098*6.471.860023表3-9炉膛热力计算（带前屏过热器）1-e-k*0.098*6.470.844331pn*1.450.0316610(0.78+1.6rH2O/sqrt(10Pn*1.45)-0.1)(1-0.37T1/1000)7.156595(Kyrn+