锅炉余热回收热力计算(1).xls

锅炉余热回收热力计算(1).xls

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CWNS1.4-85/65-Y型常压内燃三回程湿背式燃气热水锅炉热力计算书RJ有限公司二零一二年六月动力公司热力车间烟气余热回收RJ热力计算书序号名称符号公式及来源数值单位一余热回收规范1进口烟气温度Q给定1702出口烟气温度P给定253进口水温t给定304出口水温t给定455平均水温t37.56冷空气温度tlk给定20二燃料特性（天燃气）1CH495.9495%2C2H40%3C2H60.9075%4C3H80.1367%5C4H100%6C5H120%7H20%8O20%9CO0%10CO23%11H2S0.002%12N20%13H2O0.0062%14应用基低位发热量Qdwy35160kJ/m3三燃料燃烧产物计算1理论空气量V0.04760.5CO+0.5H2+1.5H2S+（m+n/4）CmHn-O29.3183Nm3/kg2N2理论容积VN20.79V0+N2/1007.3614Nm3/kg3RO2容积VRO20.01（CO2+CO+H2S+mCmHn）1.0118Nm3/kg4H2O理论容积VH2O0.01（H2S+H2+nCmHn/2+0.124dq）+0.016V02.1008Nm3/kg四烟气容积及特性计算1平均过量空气系数apj取定1.052实际水蒸汽容积VH2OV0H2O+0.0161（pj-1）V02.10830Nm3/Nm33烟气总容积VyVRO2+V0N2+VH2O+（pj-1）V010.9474Nm3/Nm34R2O容积份额rRO2VRO2/Vy0.0924%5H2O容积份额rH2OVH2O/Vy0.1926%6三原子气体份额rrRO2+rH2O0.2850%7烟气总重量Gy1-Ay/100+1.306apjV013.7781kg/Nm3五烟气温焓表（见后）六回收热量热力计算12345保温系数0.98006烟气进口温度1707进口烟焓I3105.46kJ/Nm38烟气出口温度先假设309出口烟焓I247.16kJ/Nm310烟气放热量Qrp（I-I）2801.130154kJ/Nm3热功率W2.421794884MW.节能器热力计算序号名称符号计算公式或来源数值单位1进口烟温l由上表决定170.002进口烟焓I查焓温表3105.46KJ/m33出口烟温l假定50.004出口烟气绝对温度Tll+273323.00K5出口烟焓Il查焓温表247.16KJ/m36烟气侧对流放热量Qrp（I-I-（I+I）/2）0.96（3640.52-2659.63）2801.13KJ/m37工质流量Dgz设计给定#REF!

kg/s8给水温度t1设计给定30.009给水焓i1查附录，二126.28KJ/kg10节能器出口水焓Ii1QrpBj/Dgz=85.1942.94158.301336000.56#REF!

KJ/kg11节能器出口水温度t查附录，二#REF!

12平均水温tpj（t1+t2）/2=2037.89）2#REF!

13最大温差td=228-37.89#REF!

14最小温差tx=167.5-2020.0015受热面的平均温降t（td-tx）/ln（td/tx）#REF!

16平均烟温pjtpj+t=28.94+167.91#REF!

17导热系数查表3-2#REF!

W/（mK）18运动粘度系数查表3-2#REF!

m2/s序号名称符号计算公式或来源数值单位19烟气普朗特准则数Pr查表3-20.660100crrrQQQ-21t11t动力公司热力车间烟气余热回收RJ热力计算书序号名称符号公式及来源数值单位20平均烟气的绝对温度Tpj+273=196.85+273#REF!

K21烟气流通面积Fab-n（ldl+n21D）-ca0.084m222烟气容积VyVRO2+VH2O+VN20+（pj-1）V0#REF!

m3/kg23烟气中水蒸汽容积份额rH2OVH2O/Vy#REF!

24烟气中三原子气体容积份额rRO2VRO2/VyNm3/kg25烟气中飞灰浓度fhAarafh/（100Gy）=00.2/（10013.908）#REF!

kg/kg26管径d设计给定0.026m27辐射层有效厚度s=0.90.0260.0234m28烟气流速wyBjVy（pj+273）/（273F）=158.3013360011.4770469.85（0.084273）#REF!

m/s29横向节距1结构给定75.00mm30修正系数Cs=0.99910,Cz=11.0032烟气对流换热系数dCsCz/d（wd/）0.6Pr0.33#REF!

W/（m2）33管壁灰污温度tb按热力计算标准方法按7-36条#REF!

34管壁灰污绝对温度Tbtb+273=53.94+273#REF!

K35炉内压力p给定0.104MPa36三原子气体减弱系数Kq#REF!

1/m.MPa37碳黑粒子减弱系数Kg#REF!

1/m.MPa38烟气辐射吸收力kps（kq+kg）ps=（15.3419+0.2076）0.1040.0234#REF!

39烟气黑度ay1-EXP（-kps）#REF!

40辐射放热系数f5.710-8（1+ab）/2ayTy3（1-（Tb/Ty）4）/（1-Tb/Ty）#REF!

W/（m2）41热有效系数按753，表710.9042传热系数k#REF!

W/m243受热面积H2.59m244传热量QchHtk/Bj103=2.59167.994.56158.301310003600#REF!

KJ/m345误差百分数e（Qrp-Qch）/Qrp100%=（942.94-936.56）942.94100#REF!

2%排烟温度校核46常压节能器出口烟焓I1I+Ilk-Qch/=3640+0.1248-936/0.962689.80KJ/kg47常压节能器出口烟温1查烟气焓温表校核

（1）给定-

（1）计算=167-176=910176.00热力计算汇总表序号名称符号单位热平衡（炉膛）节能器1热效率%#REF!

2燃料消耗量Bm3/h#REF!

3炉膛容积热负荷（106）qvKW/m3#REF!

4炉膛尺寸smm550145对流管尺寸smm3236进口烟温#REF!

#REF!

ddFV9.046.36.3qoHrTpsr）100037.01）（02.1109.5491.2

（2）5.057.104（9.0）（fdnmpyHCnmT12.0）5.010006.1）（2（306.04/）（26.022212ddnnndL动力公司热力车间烟气余热回收RJ热力计算书序号名称符号公式及来源数值单位7出口烟温#REF!

#REF!

8烟气流速wym/s#REF!

9传热系数KW/m2#REF!

10受热面积Hm2#REF!

#REF!

11吸热量QKJ/m3#REF!

#REF!

12吸热量百分比Q/Q%#REF!

#REF!

13平均过剩空气系数pj1.101.1014热力计算误差校核QQnet.q/100-（Qf+Qcr1+Qcr2+Qcr3+Qcr4）（1-q4/100）=3558889.46100-（11157.5+16635.8+2882.6+936.6）（1-0100）#REF!

15比值%（Q/Qnet.q）100%255.735588100%0.49%0.5%，合格0.49动力公司热力车间烟气余热回收RJ热力计算书序号名称符号公式及来源数值单位Nm3/Nm3Nm3/Nm3100-200435.9705032I200-300364.7772851300-400247.1639248烟气温焓表VRO2=1.01177Nm3/Nm3V0N2=7.36142Nm3/Nm3V0H2O=2.1008Nm3/Nm3I0yI0KIy=I0y+（-1）I0k（C）RO2VRO2（C）RO2（C）N2V0N2（C）N2（C）H2OV0H2O（C）H2O（KJ/Nm3）（KJ/Nm3）（KJ/Nm3）C3+5+7（C）KV0（C）KII123456789101112100170172.00022130956.9852301151317.22122841446.2066781321230.0102281507.70719200358362.2122282601913.97046304638.64406242914.8267512662478.6569743038.7595991531.052409300559565.5771943922885.67854463972.67171344423.9274474033755.2584984611.6903721572.930773400772781.0833525273879.4708946261315.1025765975.6568225425050.4965416228.1816491616.4912775009961007.7189366644887.9860987951670.1382557565.843296846373.6893617884.5277581656.34610860012231237.3898188045918.5855779672031.4763439187.4517388307734.1552199574.1594991689.63174170014611478.1901269466963.90790511472409.62085410851.718899809131.89411411308.313591734.15409280017041724.04926410938046.03735813362806.6725912576.75921113010529.6330113103.240861794.92727190019511973.95546612439150.25108515243201.62352314325.83007128111936.6901614922.664581819.42372100022022227.908732139410261.8262417253623.88489316113.61986143613381.0203516782.670881860.006298110024582486.920828154511373.4013919264046.14626417906.46848159514862.6235818649.599661866.92878120027172748.968222169612484.9765421314476.81084519710.75561175416344.2268120527.966951878.367289130029773012.027382185113625.9973923454926.38265221564.40743191317825.8300422455.698931927.73198140032413279.133606201014796.4639425585373.85365723449.45121207719354.0245724417.152431961.453505150035043545.228064216515937.4847927805840.23188625322.94474224020872.9008326366.589791949.437352160037683812.334288232417107.9513430026306.61011627226.89575240322391.777128346.48461979.894818170040364083.487576248318278.417932286781.39155729143.29703256723919.9716230339.295611992.811006180043044354.640864264219448.8844534587264.5762131068.10152273025438.8478932340.043912000.748304190045724625.794152280520648.796736897749.86166533024.45251289726994.9971934374.202372034.158459200048444900.994504296421819.2632539278249.8527434970.11049306528560.4647536398.133732023.931356210051165176.194856312823026.5369241628743.54140736946.27318323230116.6140638452.103892053.970159220000#REF!

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