煙氣余熱回收技術(shù)參數(shù)換算公式煙氣余熱回收利用的理論計算煙氣顯熱回收量的計算理論空氣量的焓值： hko=2.96143+1.27821t+1.82909×10-4t2-2.59493×式中：t——煙氣溫度（℃）。理論煙氣量的焓值：二氧化碳焓值 hCO2=-6.53509+1.68067t+7.7798×10-4t2-2.9419×氮氣焓值 hN2=5.37036+1.23589t+1.77044×10-4t2-2.53217×水蒸氣焓值 hH2O=4.75735+1.446t+2.5429×10-4t2根據(jù)以上擬合公式，可得理論煙氣焓值為： hyo=Vihi 式中：hyo——標態(tài)下理論煙氣焓值（KJ/mVi——標態(tài)下煙氣中各組分的體積（m3/m3）；hi——標態(tài)下煙氣中各組分的焓值（KJ/m3）。實際煙氣的熔值 hy=hyo+(α-1)hk式中：hy——標態(tài)下實際煙氣焓值（KJ/m3）；α——過量空氣系數(shù)；hko——標態(tài)下理論空氣量焓值（KJ/m回收煙氣顯熱量： Qs=hy1-hy2 式中：Qs——標態(tài)下回收煙氣焓值（KJ/m3）；hy1——標態(tài)下煙氣進口溫度焓值（KJ/m3）；hy2——標態(tài)下煙氣出口溫度焓值（KJ/m3）。煙氣潛熱回收量的計算冷凝水的水蒸氣容積為： VH2OC=VH2式中：VH2OC——標態(tài)下冷凝的水蒸氣容積（mVH2O——Ps——對應溫度水蒸氣飽和壓力（Pa）；Py——煙氣壓力（Pa）；Vy——煙氣容積（m3）。冷凝的水質(zhì)量為： mH2OC=VH2冷凝率為： ?=VH2OCVH2水蒸氣的潛熱計算參照下式： γH2O=2501.40526-2.33661t-0.00176t2+6.11591×10式中：t——煙氣的露點溫度與煙氣出口的平均值。由上式可得煙氣潛熱回收量： Q1=mH2OCγ煙氣余熱理論回收總熱量煙氣余熱理論回收總熱量應按式A.13計算： Qr=Qs+Q1 式中：Qs——回收顯熱量的值（KJ/m3）。節(jié)能率節(jié)能率應按式A.14計算： ηyrh=Qr-QdB式中：ηyrh——煙氣冷凝熱能回收裝置的節(jié)能率；Qr——煙氣余熱理論回收總熱量，單位為千瓦（KW）；Qd——回收煙氣冷凝熱能所消耗能量（按發(fā)電平均效率折算為一次能源的能量），單位為千瓦（KW）；Bg——燃氣鍋爐的標準狀態(tài)下燃氣流量，單位為立方米每秒（m3/s）；qdw——燃氣低位發(fā)熱量，單位為千焦每立方米（KJ/m3）。煙氣余熱回收技術(shù)參數(shù)理論計算煙氣余熱回收技術(shù)參數(shù)理論計算見表A.1。煙氣余熱回收技術(shù)參數(shù)理論換算表煙氣溫度℃顯熱KJ/m3潛熱KJ/m3總焓值KJ/m3理論回收總熱量KJ/m3冷凝水量KJ/m3冷凝水率％理論節(jié)能率％1802945.340.002945.340.000.00001702779.880.002779.88165.460.0000.51602614.940.002614.94330.400.00011502450.530.002450.53494.810.0001.51402286.660.002286.66658.680.00021302123.330.002123.33822.010.0002.41201960.530.001960.53984.810.0002.91101798.280.001798.281147.060.0003.41001636.580.001636.581308.760.0003.9901475.420.001475.421469.920.0004.4801314.810.001314.811630.530.0004.8701154.750.001154.751790.590.0005.360995.260.00995.261950.080.0005.855915.72450.161365.872479.780.1877.454899.82768.111667.932813.620.31128.453883.941067.811951.753129.210.43179.352868.061350.442218.503427.720.542210.251852.181617.092469.273710.250.65261150836.321868.752705.073977.780.753011.849820.452106.352926.804231.230.843412.648804.602330.733135.324471.470.943813.347788.742542.683331.434699.281.02411446772.902742.953515.854915.391.104414.645757.062932.203689.265120.491.184715.244741.223111.083852.305315.201.255015.843725.393280.164005.565500.111.325316.342709.573440.014149.585675.781.385616.941693.753591.144284.895842.731.455817.340677.943734.014411.956001.421.506017.839662.133869.104531.236152.311.566318.3表A.1煙氣余熱回收技術(shù)參數(shù)理論換算表（續(xù)）煙氣溫度℃顯熱KJ/m3潛熱KJ/m3總焓值KJ/m3理論回收總熱量KJ/m3冷凝水量KJ/m3冷凝水率％理論節(jié)能率％38646.333996.814643.146295.821.616518.737630.531117.554748.086432.351.666719.136614.744231.684846.436562.281.716919.535598.964339.564938.526685.941.757019.834583.181441.525024.706803.671.797220.233567.414537.865105.276915.791.837420.532551.644628.885180.527022.571.877520.831535.884714.855250.737124.311.917721.230520.124796.045316.167221.261.917821.429504.374872.695377.0673L3.661.977921.728488.634945.045433.677401.752.00802227472.895013.305486.197485.752.038222.226457.165077.695534.847565.872.068322.525441.435138.405579.837642.312.088422.724425.715195.62562l.337715.252.118522.923409.995249.535659.527784.882.138623.122391.285300.305694.587851.362.15