蜂窝陶瓷蓄热体传热数学模型及传热系数求解

:2001205220:100126988(2001)03200502041,1,2,2,2,2(1.,410083;2.,412000):;,,::;;;;:TF066.2+5:AHeatTransferringModelofMathematicsForHoneycombCeramicRegenerativeandCalculationAboutSynthesizeCoefficientofHeatTransferringJIANGShao2jian1,CAOXiao2ling1,WANGYang2yang2,XIONGJia2zheng2,LIYong2,LUZhi2ang2(1.DepartmentofApplicationPhysicsandHeatEngineeringofCenterSouthUniversity,Zhuzhou410083,China;2.ZhuzhouIndustrialsFurnaceManufacturingCompany,Zhuzhou412000,China)Abstract:Baseonprincipleofheattransferandtheequationofheat,thispaperestablishesheattransfermodelofmathematicsforhoneycombceramicregenerative,meanwhile,thepapercalculatesthesynthesizecoefficientofheattransferringonthereasonablehypothesis.Accordingtocomparisonofresultofcalculation,theauthorindicatesthatthebypothesisandcalculationareapplicabletodesignofengineeringforhoneycombceramicregenerative.Keywords:honeycombceramicregenerative;synthesizecoefficientofheattransfer;heatex2changer;heatexchangingofconvection;heatexchangingofradiation1,21[1],,,,,2,,;();05:y,,twthtcy[5,6,7]:(1),,;(2),;(3),;(4);(5);(6);(7),;(8),dy,1,12.12.1.1=+():hwAdyL(Th-Thw)dt=-CphhhArdt5Th5ydy-CphArhdy5Th5tdt(1)5Th:A,m2;hw,W/(m2K);L,m;Th,K;Thw,K;Cph,J/(kgK);h,kg/m3;h,m/s;Ar,m2;t,s2.1.2=(-)+(-)CwMwLdy5Thw5tdt=[hwALdy(Th-Thw)dt-AsLqhsdydt]+[-wAw55y(Thw-5Thw5ydy)dt-(-wAw5Thw5ydt)](2):Cw,J/(kgK);Mw,kg;As,m2;Qhs,W/m2;w,W/(mK);Aw,m2Mh(kg),Mh=ArLh;td,h(s),h=L/tdhCh=MhCph,(J/);Ch=Ch/tdh,(J/s);Cw=MwCw,,(J/),(1)(2):5Th5t+Ltdh5Th5y=hwAChtdh(Thw-Th)(3)5Thw5t-LwAwCw52Thw5y2=hwACw(Th-Thw)-AsqhsCw(4)2.22.2.1=CpccArdt5Tc5ydy=cwALdy(Tcw-Tc)dt(5)2.2.2=-1523320018-CwMwLdy5Tcw5tdt=cwALdy(Tcw-Tc)dt+AsLqcsdydt(6),c:5Tc5y=cwACc(Tcw-Tc)-AsqcsCc(7)5Tcw5t=cwACw(Tc-Tcw)(8),:Th(L,t)=Th,i=const(9)Tc(0,t)=Tc,i=const(10),::Thw(y,t=Phot)=Tcw(y,t=0)(0yL,Phot)(11):Thw(y,t=0)=Tcw(y,t=Pcol)(0yL,Pcol)(12),,;,(3)(12)33.12,[8]2.5mm,0.5mm/1,,,,,,;Bi0.1[6],,3.2[2]=+e(13):;c,;,23.3[5]:c=0.03de0.17(Pr0.4W0.830.83)(14):Pr;de,m;,m2/s3.4=qr/(T-Ts)(15):qr,W/m2;T,qr=sCb[(T+273100)4-A(ts+273100)4](16)s=(s+1)/2(17)=H2O+CO2(18)A=AH2O+ACO2(19)CO2=40.73PCO2lCb(T+273100)0.5(20)CO2=40.7P0.8H2Ol0.6Cb(T+273100)(21)AH2O=H2O(T+273ts+273)0.45(22)ACO2=CO2(T+273ts+273)0.65(23)l=3.6VF(24)ts=tk+Q/3.6kF(25):Cb=5.67,,W/m2s;s=0.850.95,;;A;P;l,m;V,m3;F,m2;ts,tk25:;QkW4,1,11221/5014002/11001273/kW154.2154.244/164.0164.25/(ms-1)8.3011.636/(Wm-2-1)71.167.87/(Wm-2-1)34.834.88/763.5575.0[4,8],2K,3.4%,,,,,,,:(1);(2);(3);(4)2221/5014002/11001273/kW154.2154.244/164.2164.25/(ms-1)8.2811.636/(Wm-2-1)76.867.77/(Wm-2-1)36.036.08/763.5575.05,,,5%:,,,,:[1],.[J].,2000,31(4):311-315.[2].[M].:,1979.[3].[M].:,1998.(41)(2),,,(3),,,,,57,,,,34,,(4),,,,,,,,,,,,;,,,:[1]1[M].:,1988.3523320018