锅炉本体的热力计算

12—()fbxtfHTTaQ440−=σkW7-10σ——0σ=5.6710-11kW/m2.K4Hf——m2T——KTb——Kxtα——)(lljfIQBQ′′−′=ϕkW7-2Ql——kJ/kglI′′——kJ/kgϕ——jB′——kg/sjB′=3600/jBQ)(lllpjyllTTcVI′′−=″−)(″−=lllpjyjfTTcVBQϕ7-3Tll——QlK″lT——KpjycV——TllTkJ/kg.K″l″−″−=lllllpjyTTIQcV7-17-2V1150mmF1RblF=blm27-4F=2blm2(7-5)Fl=R+Fbzm27-6Fbz--()—QtQtQQ′==ϕ(tQ)1ϕ−QtQ)1(ϕϕ−=′′tttQQQQQQ)2()1(2ϕϕϕϕϕ−=−+=′′+′=)2(/2ϕϕ−==tQQxxS/de/d7-2S/de/de/d1.4e/dS/dxS/d=11SeSS/d=2.5e/d=0.51.5S/d1.21.3S/d1.51.6x=1x1x1-x{xx)1(−2)1(]})1([1xxxx−=−+−({xx)12−32)1(]})1()1([1xxxxxx−=−+−+−((xx)13−4)1x−432)1(1)]1()1()1(1[xxxxxxz−−=−+−+−+=7-7x7-25bfxFH=7-8Fb——m2FbixiHfi=xiFbi∑∑=biifFxHm27-9bzbiibzfFFxFHx∑∑==7-10Fbzm2Fbz=Fl-RFlRζ:=ζψtfQQ==ψ7-11xζψ=7-12ψ1ψqtqffψtftftftfftQQFqFqqqqqq===−=ψ7-132ζζψχψ/χ=ζ3ζFbψHfHf=χFbbfFHζψ=bfFHψζ=7-14bzbiilFF∑=ψψ7-15Fbi—bm2ψi=012347-3QhyχQhyχabQhy(1-χab)QhyQbyQh(1-ah)QbyhybbbyQQQ)1(χα−+=(7-16)byhhhyQQQ)1(χα−+=(7-17)QfbyyhfQQQ−=(7-18)χ(χ=Hf/Hbz)ab--ab=0.8;ahy--7-167-17()()()bhybbhhyxaaQaQQ−−−−+=1111)1)(1(1)1(bhhbbQQχααbfQχα−−−−+=7-18111)1)(1(1−+−=−−−−=hbbbhhbhbhhbfQQQQQαχαχαααχααχα(7-19)4040bbzbbfbbTxFaTHaQσσ==40THaQbzhbσ=QbQh7-19()())11(1111440440−+−=−+−=hybbfhybbbzfaxaTTFaxaTTFQσσ()fbxtfHTTaQ440−=σ)11(11−+=hybxtaxaa7-20fbhybfHTTxQ)()11(11440−−+=σαα7-21flbltfHTFTQQ4040σξαασ=Ψ=Ψ=(7-22lα—7-227-21−−+=4)(11)11(11TTxbhyblζααα7-23−=4)(11TTbxtlζααζ−=4)(1TTblxtααζ7-25fbbflbfHTHTQ4040σαασα−=blfbbbltfFTaHTaTaaQQ404040σσσψ−==bfblbbFHTT−=4ααα4−==TTxblbbαααζψ7-267-264TTb7-23lα)1()11(11hyhyhyhyxlαψαααζα−+=−+=7-277-27440)1(TRTFQhybhyhyασα−+=−+=bhyhybFRTF)1(40αασ7-28R—m27-27hyα−+bhyhyFR)1(ααRFRFRbzb−==ρ)1)(1)(1(1)1(ρψαρααα−−−−−+=hyhyhyl7-29R=0ρ=0lα7-27axtahyabkPShye−−=1α7-30k—1/m.MPaP——P=0.1MPaS—llFVS6.3=mVl——m3Fl——m2CO2H2OCO2H2O,αhy1.fgαbfgαbfgfghymmααα)1(−+=7-31mqvqv400kW/m3m=0.1,m=0.55qv1200kW/m3=0.6m=1m()PSkrkfgthqqea+−−=17-32PSrkqbfgqqeaa−−==17-33rq——OHROq22rrr+=kq——1/m.MPa)100037.01)(1.0106.178.0(102″−−+=lqOHqTSPrk1/m.MPa7-34Pq——Pq=PrqMPakth——yyllthHCTk)5.010006.1)(2(3.0−″″−=α1/m.MPa7-35yyHC——C/Hkth—″lα″lα″lα=2kth=0T——″l″lTkth2.kPShye−−=1α21xxkkrkkjhhqq++=µ1/m.MPa7-367-347-4khkj1322143000hyhdTk″=ρ1/m.MPa7-37yρ——ρ=1.3kg/m3dh——dh=20µmdh=10µmµh——yfhyhGA100αµ=kg/kg7-38Ay——%fhα——fhα=0.150.3fhα=0.850.95Gy——kg/kg0306.11001kyyVAα+−=G7-391.306——10g/kgkg/Nm3kh7-52kjkj=10(1/m.Mpa)x1x1=1x1=0.5x2x2=0.1x2=0.037-6kPShye−−=1αQlkgNm3krlQqqqqQQ+−−−−=4643100100kJ/kg7-40100100643qqqQr−−−kg)1001(1001004634643qqqQqqqqQrr−+−=−−−−QrydwQQk1lkklkctVQ)(0″=αkJ/kg2()()lkklrkkllkctVctVQ00ααα∆+∆−″=kJ/kg7-42lQlQllϑllpjcyϑpjll+″lαϑQlV=kJ/kgylllcVQ=ϑ°C7-43T273=llϑKVy——kgNm3/kgcpj——0°Cllϑkg/Nm3.K7-40lQ″lαllϑllϑllϑ″lαllT7-7Xmaxh11maxmaxhhX=TXmaxXmaxXmaxllϑllTθT=7-44XXeeβαθ−−−=4αβ7-44nl44″=θθnXmaxXmaxn=0.7(n=0.6)1lϑ′′°CT′′KS14d2lϑ′′lϑ′′lϑ′′lϑ′′=11001150°Clϑ′′maxt2-100°Clϑ′′min800900°Clϑ′′=12001400lϑ′′7-227-227-154040)(TFTFQbzllbiilfψσαψσα==∑kJ/kg7-3)()(lllpjyjlljfTTcVBIQBQ′′−′=′′−′=ϕϕkJ/kg)(40lllpjyjbzllTTcVBTF′′−′=ϕψσα7-48040=−′′+′lllpjyjbzllTTcVBTFϕψσαlT′′01''4'30=−+lpjyjllbzllcVBTFθθϕψσαnl4″=θθ01''4'30=−+′′lnlpjyjllbzllcVBTFθθϕψσα0104=−′′+″llnlBθαθ7-49300llbzpjyjTFCVBBΨ′=σϕ——llTlθ′′n7-49n7-49),(0nBfllαθ=′′),(max0XBflα=B0lα:6.006.06.00BMBll+=′′αθ7-50MXmaxM=0.54-0.2Xmax7-51aM=0.59-0.5Xmax7-51bM=0.56-0.5Xmax7-51cXmax=0.3Xmax=0.1Xmax=0.14XmaxXXXr∆+=max7-52lrrHhX=——hr——m——mlHX∆——X∆=0X∆=-0.15X∆=0X∆=0.1D35t/h,X∆=0D35t/hX∆=0.15300llbzpjyjTFCVBBΨ′=σϕ7-501.27316.030−+′=′′pjyjlllbzllllcVBTFMTϕαψσϑ°C7-532.32230)1(1)(−′′′′′′−′=llllllllllpjyjfTTMTTMTTcVBHξασϕm27-54a32230)1(1)(−′′′′Ψ′′−′=llllllllllpjyjbzTTMTTMTTcVBFασϕm27-54aflljfHIQBq)(′′−′=ϕkW/m27-55qfgfiqη=Kw/m27-56gη——lθ′′Hflθ′′lθ′′1.VHbzFlFlflψS2.lQlα′′lα∆llθ3.lθ′′VlI′′pjyc4.hyαlα5.27316.030−+′=′′pjyjlllbzllllcVBTFMTϕαψσϑlθ′′100°C100°Clθ′′100°Clθ′′hTbT6.fffHQq=kW/m27.lydwjvVQB′=′qkW/m3RQBydwjR′=′qkW/m2jB′—/s4-24-3XnlnllTT4'')1(44−=gbfTq+=εK(7-28)ffjfHQBq′=kg)(440bhjflfTTBHQ−′=ασqf4040/1bflhfTqTqσασ+=(7-29)mTqlhf+=ασ/140(7-30)4040)(gbffbfTqqTqm+==εσσmTqlhf+=ασ/140)''(lllpjyfTTcVQ−=ϕkj/kg''''lllllpjyTTIQcV−−=kj/kg.)''(''lllfpjyjffjfTTHcVBHQBq−==ϕ(7-33))''('/1140lllfpjyjhTTHcVBmT−=+ϕασ(7-34)''4''''411)1(lnllhlomBθθθθα−=−=+(7-35)m7-1(7-35)7-812345m)1(mBlo+α7-8lθ′′6lθ′′100°C100°Clθ′′100°Clθ′′78