鍋爐燃?xì)鉄崃τ?jì)算zzzz

1、WNS2-1.25-Y(Q)WNS2-1.25-Y(Q)全自動(dòng)燃油（氣）蒸汽鍋爐熱熱力力計(jì)計(jì)算算書書（燃燃?xì)鈿猓?計(jì) 算： 校 核： 審 核：二一三年十一月目 錄.鍋爐規(guī)范.燃料特性.理論空氣量，煙氣理論容積的計(jì)算.各受熱面煙道中煙氣特性表.鍋爐熱平衡及燃料消耗量計(jì)算.爐膛熱力計(jì)算.第二回程螺紋煙管.第三回程螺紋煙管.節(jié)能器熱力計(jì)算.熱力計(jì)算匯總表 依據(jù)：鍋爐機(jī)組熱力計(jì)算標(biāo)準(zhǔn)方法 上海工業(yè)鍋爐研究所二一年編印(73版編譯)WNS2-1.25-Y(Q)鍋爐熱力計(jì)算.鍋爐規(guī)范：1額定蒸發(fā)量Dkg 20002額定蒸汽壓力PMPa1.253額定蒸汽溫度 t1194.004節(jié)能器出口溫度 t248.05

2、給水溫度 t206冷空氣溫度tl k20.燃料特性：CH4%95Cmhn%2.4H2%1應(yīng)用基成分 %CO %0.1CO2%0.5N2%1O2%0H2S mg/m3400Smg/m3100H2Omg/m31 Qnet.pKJ/m335588.理論空氣量，煙氣理論容積的計(jì)算：序號(hào)名 稱符號(hào)單位計(jì)算公式結(jié)果1理論空氣重量V0m3/m3=0.04760.50.1+0.51+4.2400100000010000029532.47100100000100000009.41292N2 理論容積VN20m3/m3 0.0110.799.41297.44623RO2理論容積VRO2m3/m3 =0.01（0.

3、5+0.1+95+2.40.98004H2O理論容積VH2O0m3/m3 0.01129522.40.01619.41292.1095.各受熱面煙道中煙氣特性表：序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值1出口過量空氣系數(shù) 給定1.12漏風(fēng)系數(shù)給定0.13實(shí)際水蒸氣容積VH2Om3/m3 =2.10950.01611.117.44622.12474煙氣總?cè)莘eVym3/m3 =0.9800+7.4462+2.1095=1.1-19.412911.47705RO2容積份額rRO2 =0.980011.47700.0854序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值OKoOHOHVVV) 1(0161. 02

4、2-+=aOKOHoNoORyVVVVV) 1(222-+=ayoROROVVV/22=-+S+-254242107)4(2102.421210476.0OSHCnmCHSHHCOnm=+0279. 0100VN)(0 1 . 02nmddHCC OC OS+=+S+020161. 0)2(01. 0KnVCmHnH6H2O容積份額rH2O = 2.124711.47700.18517三原子氣體容積份額rqrRO2+ rH2O=0.0854+0.18510.27058煙氣質(zhì)量Gykg/m31- Aar/100+1.306pjV013.908.鍋爐熱平衡及燃料消耗量計(jì)算序號(hào)名 稱符號(hào)單位計(jì)算公式

5、或來源數(shù) 值1燃料低位發(fā)熱值Qnet.qKJ/m3設(shè)計(jì)給定35588.002冷空氣溫度tl k設(shè)計(jì)給定20.03冷空氣理論熱焓Il kKJ/m3查焓溫表248.54排煙溫度l設(shè)計(jì)給定160.005排煙熱焓IlKJ/m3根據(jù)l及 pj查煙氣焓溫表2539.386固體不完全燃燒熱損失q4%查計(jì)算標(biāo)準(zhǔn)5-020.007氣體不完全燃燒熱損失q3%查計(jì)算標(biāo)準(zhǔn)5-020.508排煙過量空氣系數(shù)py1.009排煙熱損失q2%( Ipy-py Il k) / Qr (100-q4)=2539.38-1248.51000355886.4410散熱損失q5%查計(jì)算標(biāo)準(zhǔn)5-013.6011灰渣物理熱損失q6%0.0

6、012鍋爐總熱損失q%q= q2 +q3 +q4 +q5+q6=6.44+0.5+0+3.6+010.5413鍋爐熱效率%100-q=1-10.5410010089.4614額定蒸汽溫度t設(shè)計(jì)給定194.0015額定蒸汽焓IKJ/kg查附錄，一2787.3016給水溫度tgs節(jié)能器出口溫度37.8917給水焓i1KJ/kg節(jié)能器出口焓值202.6218排污率%設(shè)計(jì)給定2.019鍋爐有效利用熱Q1kj/s設(shè)計(jì)給定1400.0020燃料消耗量Bm3/h100Q1/(Qnet.q)=10036001400(89.4635588)158.301321計(jì)算燃料消耗量Bjm3/hB(1- q4/100)=

7、158.3013(1-0100)158.301322保熱系數(shù)/1- q5 / (+ q5)=1-3.6(89.46+3.6)0.96.爐膛熱力計(jì)算序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值1爐膛容積Vlm3d12h1/4+d22h2/4=3.140.5522.484+3.141.1120.5541.11序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值yOHOHVVV/22=2爐墻面積Flm2d1h1/4+2d22/4+d2h2=3.140.552.48+3.141.10.553.1421.1248.083輻射層有效厚度Sm3.6 Vl / Fl=3.61.118.080.504爐墻水冷壁有效角系數(shù)x查計(jì)算標(biāo)

8、準(zhǔn)604，線算圖11.005水冷壁灰污系數(shù)查計(jì)算標(biāo)準(zhǔn)620，表620.556熱有效系數(shù)x=10.550.557爐膛輻射受熱面積Hfm2設(shè)計(jì)結(jié)構(gòu)給定（波膽+回燃室）7.758爐膛出口過量空氣系數(shù) 設(shè)計(jì)給定1.109爐膛漏風(fēng)系數(shù)設(shè)計(jì)給定0.1010冷空氣溫度tl k設(shè)計(jì)給定20.0011冷空氣焓Il kKJ/m3設(shè)計(jì)給定冷空氣溫度決定248.5012熱空氣溫度tr k先按沒有空氣預(yù)熱器20.0013熱空氣焓I r kKJ/m3先按沒有空氣預(yù)熱器248.5014空氣帶入爐內(nèi)熱量QkKJ/m3(-) I r k+Il k=(1.1-0.1)248.5+0.1248.5273.3515爐膛入爐熱量QlK

9、J/m3Qnet.q ( 100- q3- q4- q6)/ ( 100- q4)+ Qk=35588(100-0.5-0-0)(100-0)+273.3535683.4116理論燃燒溫度 jr查焓溫表1890.8517絕對(duì)燃燒溫度Tj rKjr+273=1890.85+2732163.8518爐膛出口煙溫l先假定后校核1333.0019爐膛出口煙焓IlKJ/m3查焓溫表24130.4920爐膛出口絕對(duì)溫度TlKl+273=1333+2731606.0021煙氣平均熱容量 V CKJ/m3(Ql - Il) / (Tj r - Tl)=(35683.41-24130.49)(2163.85-1

10、606)20.7122爐內(nèi)壓力pMPa給定0.10423三原子氣體減弱系數(shù)Kq1/m.MPa1.550724碳黑粒子減弱系數(shù)Kg1/m.MPa1.706525介質(zhì)減弱系數(shù)K1/m.MPakq+kg=1.5507+1.70653.257226發(fā)光火焰黑度afg1-e-kps0.154427不發(fā)光火焰黑度abf1-e-kqps0.076728系數(shù)m查計(jì)算標(biāo)準(zhǔn)6-070.6029火焰黑度aymafg+(1-m)abf=0.60.154410.60.07670.123330爐膛黑度al 0.2037序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值qloHrTpsr)100037. 01)(02. 1109. 5

11、491. 2(2-+nmpyHCnmT-12. 0 ) 5 . 010006 . 1)(2(306. 0/ay)1 (yyyaaa-+55. 01233. 0 - 11233. 01233. 0+=）（31波爾茨頓準(zhǔn)則B0Bj VC/(5.710-11Hf Tjr3)=0.355732系數(shù)M按計(jì)算標(biāo)準(zhǔn)6-130.4933無因次出口溫度l 0.742234爐膛出口煙氣絕對(duì)溫度TlKlTjr=0.74222163.851605.9235爐膛出口煙氣溫度lTl-273=1605.92-2731332.9236校核假定100,合格0.0837爐膛出口煙焓IlKJ/m3查煙焓表24076.9338爐膛輻

12、射放熱量Q fKJ/m3 (Ql - Il) =0.96(35683.41-24076.93)11157.5039燃燒室熱強(qiáng)度qV KW/m3B Qnet.q /V=158.30133600355881.111408.1440輻射受熱面熱流密度q fKW/m2Q f /Hf=11157.57.751439.91.第二回程螺紋煙管序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值1進(jìn)口煙溫l由上表決定1332.922進(jìn)口煙焓IKJ/m3查焓溫表24076.933出口煙溫l假定411.004出口煙氣絕對(duì)溫度TlKl+273=411+273684.005出口煙焓IlKJ/m3查焓溫表6701.686煙氣側(cè)對(duì)流放

13、熱量QrpKJ/m3(I- I)0.96（24076.93-6701.68）16703.127工質(zhì)流量Dgzkg/s設(shè)計(jì)給定0.568額定蒸汽溫度t設(shè)計(jì)給定194.009額定蒸汽焓IKJ/kg查附錄，一2787.3010給水溫度t1節(jié)能器出口溫度37.8911給水焓i1KJ/kg節(jié)能器出口焓值202.6212平均水溫tpj(t1+t2)/2194.0013最大溫差td =1332.92-193.351138.9214最小溫差tx =411-193.35217.0015受熱面的平均溫降t(td-tx)/ ln(td/tx)556.0616平均煙溫pjtpj+t=193.35+556.88750.

14、0617導(dǎo)熱系數(shù)W/(mK)查表3-20.087118運(yùn)動(dòng)粘度系數(shù)m2/s查表3-20.00012219煙氣普朗特準(zhǔn)則數(shù)Pr查表3-20.60520平均煙氣的絕對(duì)溫度TKpj+273=750.23+2731023.06序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值21煙氣流通面積Fm2Nd2/4=423.140.045240.06721t-q11t-q6.006.06.0BMaBlo+31185.216375.755.0107.571.2036003013.15896.0-22煙氣容積Vym3/kgVRO2+VH2O+VN20 +( pj-1) V011.477023煙氣中水蒸汽容積份額rH2OVH2

15、O/Vy0.185124煙氣中三原子氣體容積份額rRO2VRO2/Vy0.085425煙氣密度ykg/ m3Gy/Vy=13.90811.47701.211826煙氣中飛灰濃度f hkg/kgAar a f h/(100Gy)=00.2/（10013.908）0.000027管徑dm設(shè)計(jì)給定0.04528螺紋節(jié)距Pm 0.03029螺紋深度h m0.00230輻射層有效厚度sm =0.90.0450.040531煙氣流速wy m/sBj Vy(pj+273) / ( 273F)=158.3013360011.47701023.23（0.067273）28.3332雷諾數(shù)Rewd/=28.330

16、.0450.00011210447.5633努謝爾特?cái)?shù)Nu 52.5934煙氣對(duì)流換熱系數(shù)dW/(m2)Nu/d=0.087152.590.045101.8135管壁灰污溫度tb按熱力計(jì)算標(biāo)準(zhǔn)方法按7-36條254.0036管壁灰污絕對(duì)溫度 TbKtb+273=253.35+273527.0037爐內(nèi)壓力pMPa給定0.10438三原子氣體減弱系數(shù)Kq1/m.MPa8.731239碳黑粒子減弱系數(shù)Kg1/m.MPa0.937440煙氣輻射吸收力kps(kq+kg) ps=（8.7303+0.9376）0.1040.04050.040741煙氣黑度ay1-EXP(-kps)0.039942輻射放

17、熱系數(shù)fW/(m2)5.710-8(1+ab)/2 ayTy3(1-(Tb/Ty)4)/(1-Tb/Ty)4.2043熱有效系數(shù)按753，表710.8544傳熱系數(shù)kW/m290.1145受熱面積H m2n*3*3.14*d=423.140.0452.4614.6046傳熱量QchKJ/m3Ht k/Bj103=14.6556.8890.11158.30131000360016635.7547誤差百分?jǐn)?shù)e%（Qrp- Qch）/ Qrp100%=（16703.12-16660.71）16703.120.402%.第三回程螺紋煙管序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值1進(jìn)口煙溫l由上表決定411

18、.00序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值2進(jìn)口煙焓IKJ/m3查焓溫表6701.683出口煙溫l設(shè)計(jì)給定228.00ddFV9.046.36.3=112. 008. 09206. 0)/()/(0144. 0dhdPRe-qoHrTpsr)100037.01)(02.1109.5491.2(2-+nmp yHCnmT-1 2. 0)5 . 01 0 0 06 . 1)(2(3 0 6. 0a)2.482.101(85.0)(+=+fdaaj4出口煙氣絕對(duì)溫度TlKl+273=228+273501.005出口煙焓IlKJ/m3查焓溫表3640.526煙氣側(cè)對(duì)流放熱量QrpKJ/m3(I- I

19、)0.96（6701.68-3640.52）2942.757工質(zhì)流量Dgzkg/s設(shè)計(jì)給定0.568額定蒸汽溫度t設(shè)計(jì)給定194.009額定蒸汽焓IKJ/kg查附錄，一2787.3010給水溫度t1節(jié)能器出口溫度37.8911給水焓i1KJ/kg節(jié)能器出口焓值202.6212平均水溫tpj(t1+t2)/2194.0013最大溫差td =411-193.35217.0014最小溫差tx =228-193.3534.0015受熱面的平均溫降t(td-tx)/ ln(td/tx)98.7316平均煙溫pjtpj+t=193.35+99.59292.7317導(dǎo)熱系數(shù)W/(mK)查表3-20.0478

20、18運(yùn)動(dòng)粘度系數(shù)m2/s查表3-20.00004519煙氣普朗特準(zhǔn)則數(shù)Pr查表3-20.65120平均煙氣的絕對(duì)溫度TKpj+273=292.94+273565.7321煙氣流通面積Fm2Nd2/4=563.140.045240.08922煙氣容積Vym3/kgVRO2+VH2O+VN20 +( pj-1) V011.477023煙氣中水蒸汽容積份額rH2OVH2O/Vy0.185124煙氣中三原子氣體容積份額rRO2VRO2/Vy0.085425煙氣密度ykg/ m3Gy/Vy=13.90811.47701.211826煙氣中飛灰濃度f hkg/kgAar a f h/(100Gy)=00.

21、2/（10013.908）0.000027管徑dm設(shè)計(jì)給定0.04528螺紋節(jié)距Pm 0.03029螺紋深度h m0.00230輻射層有效厚度sm =0.90.0450.040531煙氣流速wy m/sBj Vy(pj+273) / ( 273F)=158.3013360011.4770565.94（0.089273）11.7532雷諾數(shù)Rewd/=11.50.0450.00004511786.3133努謝爾特?cái)?shù)Nu 58.7634煙氣對(duì)流換熱系數(shù)dW/(m2)Nu/d=0.047858.750.04562.40序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值34管壁灰污溫度tb按熱力計(jì)算標(biāo)準(zhǔn)方法按7-

22、36條254.0035管壁灰污絕對(duì)溫度 TbKtb+273=253.35+273527.0036爐內(nèi)壓力pMPa給定0.10421t-q11t-qddFV9.046.36.3=112. 008. 09206. 0)/()/(0144. 0dhdPRe-37三原子氣體減弱系數(shù)Kq1/m.MPa11.108538碳黑粒子減弱系數(shù)Kg1/m.MPa0.937439煙氣輻射吸收力kps(kq+kg) ps=（11.1074+0.9376）0.1040.04050.050740煙氣黑度ay1-EXP(-kps)0.049541輻射放熱系數(shù)fW/(m2)5.710-8(1+ab)/2 ayTy3(1-(T

23、b/Ty)4)/(1-Tb/Ty)1.6642熱有效系數(shù)按753，表710.8543傳熱系數(shù)kW/m254.4544受熱面積H m2n*3*3.14*d=563.140.0452.9823.5845傳熱量QchKJ/m3Ht k/Bj103=23.5899.5954.45158.3013100036002882.5546誤差百分?jǐn)?shù)e%（Qrp- Qch）/ Qrp100%=（2942.75-2907.88）2942.751.052%.節(jié)能器熱力計(jì)算序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值1進(jìn)口煙溫l由上表決定150.002進(jìn)口煙焓IKJ/m3查焓溫表3640.523出口煙溫l假定167.504出

24、口煙氣絕對(duì)溫度TlKl+273=167.5+273440.505出口煙焓IlKJ/m3查焓溫表2659.636煙氣側(cè)對(duì)流放熱量QrpKJ/m3(I- I-(I+I)/2)0.96（3640.52-2659.63）942.947工質(zhì)流量Dgzkg/s設(shè)計(jì)給定0.568給水溫度t1設(shè)計(jì)給定20.009給水焓i1KJ/kg查附錄，二85.1010節(jié)能器出口水焓IKJ/kgi1QrpBj/Dgz=85.1942.94158.301336000.56159.7311節(jié)能器出口水溫度t查附錄，二37.8912平均水溫tpj(t1+t2)/2=2037.89）228.9413最大溫差td =228-37.8

25、9112.1114最小溫差tx =167.5-20147.5015受熱面的平均溫降t(td-tx)/ ln(td/tx)129.0016平均煙溫pjtpj+t=28.94+167.91157.9417導(dǎo)熱系數(shù)W/(mK)查表3-20.036618運(yùn)動(dòng)粘度系數(shù)m2/s查表3-20.000026序號(hào)名 稱符號(hào)單位計(jì)算公式或來源數(shù) 值19煙氣普朗特準(zhǔn)則數(shù)Pr查表3-20.66020平均煙氣的絕對(duì)溫度TKpj+273=196.85+273430.9421煙氣流通面積Fm2ab-n（ldl+n21D）-ca0.08422煙氣容積Vym3/kgVRO2+VH2O+VN20 +( pj-1) V011.47

26、7021t-q11t-qqoHrTpsr)100037.01)(02.1109.5491.2(2-+nmp yHCnmT-1 2. 0 ) 5 . 01 0 0 06 . 1)(2 (3 0 6. 0a)66.14.62(85.0)(+=+fdaaj23煙氣中水蒸汽容積份額rH2OVH2O/Vy0.185124煙氣中三原子氣體容積份額rRO2VRO2/Vy0.085425煙氣中飛灰濃度f hkg/kgAar a f h/(100Gy)=00.2/（10013.908）0.000026管徑dm設(shè)計(jì)給定0.02627輻射層有效厚度sm =0.90.0260.023428煙氣流速wy m/sBj V

27、y(pj+273) / ( 273F)=158.3013360011.4770469.85（0.084273）9.5229橫向節(jié)距1mm結(jié)構(gòu)給定75.0030修正系數(shù)Cs=0.99910,Cz=11.0032煙氣對(duì)流換熱系數(shù)dW/(m2)CsCz/d（wd/）0.6Pr0.33100.8233管壁灰污溫度tb按熱力計(jì)算標(biāo)準(zhǔn)方法按7-36條53.9434管壁灰污絕對(duì)溫度 TbKtb+273=53.94+273326.9435爐內(nèi)壓力pMPa給定0.10436三原子氣體減弱系數(shù)Kq1/m.MPa15.609237碳黑粒子減弱系數(shù)Kg1/m.MPa0.156338煙氣輻射吸收力kps(kq+kg) ps=（15.3419+0.2076）0.1040.02340.038439煙氣黑度ay1-EXP(-kps)0.037640輻射放熱系數(shù)fW/(m2)5.710-8(1+ab)/2 ayTy3(1-(Tb/Ty)4)/(1-Tb/Ty)0.4341熱有效系數(shù)按753，表710.9042傳熱系數(shù)kW/m291.1243受熱