烟气物性的直接计算方法-许圣华

193Vol.19No.319996JOURNALOFSUZHOUINSTITUTEOFSILKTEXTILETECHNOLOGYJun.1999*(,,215006):根据理想气体混合物物性的导出方法,推导出由烟气成分直接计算烟气物性参数的计算公式,以替代由烟气物性图表查取物性参数这一繁琐的方法实际应用表明,使用该方法可以快速准确地计算烟气的密度定压比热动力粘度等物性,有推广使用价值:;;:O414,,,[1],,,,,,(rCO2=0.13,rH2O=0.11,rN2=0.76),,[2],,,,,,,,,,,,,111,:Cp=gN2CpN2+gCO2CpCO2+gO2CpO2+gH2OCpH2O(1):19990317:(1964),,:Cp,kJ/(kg);gN2gCO2gO2gH2O,kg/kg;CpN2CpCO2CpO2CpH2O,kJ/(kg)0~1000,,2%:CpN2=1.0258+1.86910-4t;CpCO2=0.8373+9.0910-4t-6.136410-7t2+1.590910-10t3;CpO2=0.9054+3.32510-4t-1.1110-7t2;CpH2O=1.8243+6.47810-4t:t,(1),:Cp=a+bt+ct2+dt3(2):a=1.0258gN2+0.8373gCO2+0.9054gO2+1.8243gH2Ob=(1.869gN2+9.09gCO2+3.325gO2+6.478gH2O)10-4c=-(6.1364gCO2+1.11gH2O)10-7d=1.590910-10gCO212:=pMRMT(3):,kg/m3;p,Pa;M,kg/mol;T,K;RM,RM=8.314J/(molK):M=28.062rN2+44.01rCO2+32rO2+18.016rH2O(4):rN2rCO2rO2rH2O,kmol/kmol:gi=riMiM(5):Mi,kg.kmol230~1000,,2%:N2=1.038510-2T+118(T373)1.5(6)CO2=1.139410-2T+252(T373)1.5(7)O2=1.262210-2T+138(T373)1.5(8)3319:H2)=1.887510-2T+1191(T373)1.5(9):N2CO2O2H2O,kg/(ms);T,K:=Ni=1gii(10)(6)(7)(8)(9)(10),:=1.388(1.0385gN2T+118+1.1394gCO2T+252+1.2622gO2T+138+1.8875gH2OT+1191)10-6T1.5(11):=/(12):(3)(10)14,,:=N2N2(t+391)A1t+B1+O2O2(t+411)A2t+B2+CO2CO2(t+525)A3t+B3+H2OH2O(t+1464)A4t+B4(13):A1=rN2+0.9536rCO2+1.1293rO2+0.663rH2OA2=rO2+1.0499rN2+1.189rCO2+0.668rH2OA3=rCO2+0.8912rN2+0.8527rO2+0.605rH2OA4=rH2O+1.678rN2+1.584rO2+1.96rCO2B1=391rN2+382rCO2+503rO2+363rH2OB2=421N2+411rCO2+546rO2+392rH2OB3=397N2+391rCO2+525rO2+408rH2OB4=920N2+903rCO2+1323rO2+1464rH2O0~1000,:N2=0.0242+6.52210-5t-0.7410-8t2O2=0.0247+7.99410-5t-1.28110-8t2CO2=0.01466+8.03610-5t-0.97910-8t2H2O=0.0162+8.110-5t-4.210-8t215:Pr=Cp(14):Cp(10)(3)(13)3432,0~1000,(CO2=0.13,H2O=0.11,N2=0.76[3],1~612Cp3456Pr1,2Cp,,3,,,45,6Pr,,3519:,,3,,Pr=Cp/,,3,:31,0~100032Cp,,;Pr,,,,,33,,,1[]BA,;19812;19933;1987DIRECTCALCULATIONOFFLUEGASPROPERTIESXuShenghua(CollegeofPhysicsScienceandTechnologyofSuzhouUniversitySuzhou,215006)Abstract:Basedonthecalculationofpropertiesofpuregasmixture,thedirectcalculatingformulaoffluegaspropertiesaccordingtothefluegascompositionwasdeduced.Comparedwiththemethodusingfluegaspropertydiagramsandtables,thismethodinmoreconvenient.Itcanbeusedtocalculatefollowingfluegaspropertiesdirectlyandaccurately:density,constantpressurespecificheatcapacity,dynamicviscosityandkinematicviscosity.Keywords:fluegas;property;directcalculation363