蓄热炉计算

8*Pr0.4*Ct*Cl*λ/d=81.4Δ-61.39%与假设合适,不重算。NU=0.023*Re0.8*Pr0.4*Ct*Cl式中:Pr=0.72Ct=1.7Cl=1.05λ=0.099ν=0.000197蓄热体散热计算已知:炉膛温度t1,砌体砌筑材料依次为轻质浇注料,耐火纤维,可假设各层温度依次为t2,t3,求炉墙外皮温度t4S1λ1S2λ2S3λ30.120.5600.540.020.081t1t2t3t4t5热流65040057091.4201213.9391.1391.1蓄热体顶散热计算已知:炉膛温度t1℃,炉顶材料:轻质浇注料,轻质保温材料,硅钙板。S1λ1S2λ2S3λ30.120.6800.580.020.081T1T2T3T4T5热流1100700500151.7202238.5704.4704.4h=0.15蓄热体顶f1=0.1461蓄热体f2=Q1=327.1Q2=η=4.25%阻力计算Cd=1.2Cl=2.5Δhl=小球Δh=Cd*Cl*Δhl*(1+Z)=244.8mmH2O2399蓄热体Δh=(λ/S+ξ)Δh1=12.8mmH3O125.6蓄热体0.5分钟.abVnL00.20.0000562.661.851.44实际废气用量=486.5平均温度增量:17.2℃出口平均温度54入口平均温度5351016m蓄热体0.4380.222*F0.226m0.038%与假设合适,不重算。0.51-1.51%1B=34.246.56.4m/s9846.4-0.24%λ=a+b*t均/1000α0.059ab轻质浇注料0.40.31r=轻质保温砖0.3900.311.40a=-1+r*0.35耐火纤维0.081b=0.25*r0.65硅钙板0.1350.160α0.0590.3541182.12.2Z=36.1λ=0.05ξ=1.5蓄热体8.01PaPa