翅片套铜管式换热器换热面积自动计算

直管外径d0=7.94mm直管壁厚t=0.31mm翅片厚度δ=水平间距S1=22mm竖直间距S2=19.05mm翅片间距Sf=排数N1=3排列数N2=30列换热器长度L开始计算翅片管外径db=8.14mm铜管内径di=7.32mm当量直径deq=2.868822768mm单位长度翅片面积为：Ff=0.4318661㎡/m单位长度翅片间管外表面积为：Fb=0.024056094㎡/m单位长度翅片管总面积Ft=0.455922228㎡/m翅片管肋化系数β=19.835814换热器传热面积F=69.756101㎡对数温差计算环境温度Tao=35℃冷凝温度Tk=50℃空气出口温度t=43℃平均温度tm=39℃传热温差ΔT=10.5℃传热系数K：25-35W/(㎡*K)取K=25W/(㎡*K)K262728293031Q19.0419.7720.5021.2321.9722.702Q38.0839.5441.0042.4743.9345.40换热量Q=18.31KW冷凝器数量N=2个总换热量Q0=36.61KWK252627282930可配制冷量Q'14.2814.8515.4215.9916.5617.132Q’28.5629.7030.8431.9833.1334.27K252627282930冷凝器风量G(m³/H)150391564016242168431744518046迎面风速(m/s)1.861.942.012.082.162.23最窄截面风速Wmax3.143.273.393.523.643.77(ρ*Wmax)1.78.178.739.319.9010.5111.13非亲水膜阻力（Pa)18.019.320.621.923.224.6亲水膜阻力（Pa)11.211.912.713.514.415.2已知冷凝器外型尺寸计算换热面积及验证其它参数tm温度下的空气密度ρ0.1mm1.7mm亲水膜0.007非亲水膜0.01131.7m换热器深W(m)0.05715换热高H(m)0.661.0955W/deq19.92kg/m³自由输入323334354023.4324.1624.9025.6329.2946.8648.3349.7951.2558.5831323334354017.7018.2818.8519.4219.9922.8535.4136.5537.6938.8439.9845.693132333435401864819249198512045321054240622.312.382.462.532.612.983.894.024.144.274.405.0211.7712.4213.0913.7714.4718.1626.027.428.930.432.040.116.117.017.918.819.824.8已知冷凝器外型尺寸计算换热面积及验证其它参数翅片表面粗糙度系数m绿色为输入参数，黄色为自动计算参数，蓝色为手动输入可变参数已知冷凝器外型尺寸计算换热面积计算直管外径d0=7.94mm直管壁厚t=0.35mm翅片厚度δ=0.1水平间距S1=22mm竖直间距S2=19.05mm翅片间距Sf=1.7排数N1=2排列数N2=30列换热器长度L1.4开始计算翅片管外径db=8.14mm铜管内径di=7.24mm当量直径deq=2.868822768mm单位长度翅片面积为：Ff=0.431866㎡/m单位长度翅片间管外表面积为：Fb=0.024056094㎡/m单位长度翅片管总面积Ft=0.455922228㎡/m翅片管肋化系数β=20.05499换热器传热面积F=38.29747㎡对数温差计算环境温度Tao=35℃冷凝温度Tk=50℃1.0955空气出口温度t=43℃平均温度tm=39℃kg/m³传热温差ΔT=10.5℃传热系数K：25-35W/(㎡*K)取K=25W/(㎡*K)K26272829303132Q10.4510.8511.2611.6612.0612.4612.86冷凝器符合2Q20.9021.7122.5123.3224.1224.9225.73换热量Q=10.05KW冷凝器数量N=2个总换热量Q0=20.10KWK25262728293031可配制冷量Q'7.848.158.478.789.099.419.72内机负荷2Q’15.6816.3116.9317.5618.1918.8119.44K25262728293031冷凝器风量G(m³/H)82568587891792479578990810238迎面风速(m/s)1.241.291.341.391.441.491.54最窄截面风速Wmax2.092.182.262.342.432.512.60(ρ*Wmax)1.74.104.384.674.975.285.595.91非亲水膜阻力（Pa)6.06.56.97.37.88.28.7亲水膜阻力（Pa)3.74.04.34.54.85.15.4tm温度下的空气密度绿色为输入参数，黄色为自动计算参数，蓝色为手动输入可变参数mmmm亲水膜0.007非亲水膜0.0113m换热器深m0.0381换热高m0.66W/deq13.28自由输入3334354013.2713.6714.0716.0826.5327.3428.1432.16323334354010.0310.3510.6610.9712.5420.0720.6921.3221.9525.08323334354010568108991122911559132101.591.641.691.741.992.682.762.852.933.356.246.576.917.269.119.29.710.210.713.45.76.06.36.68.3翅片表面粗糙度系数m绿色为输入参数，黄色为自动计算参数，蓝色为手动输入可变参数标准大气压力B101325Pa空气干球t(℃)湿球ts(℃)干球K氏温度相对湿度φ%焓值h（KJ/Kg)进风温度2719300.1546.6%54.04出风温度1615289.1590.1%42.32平均温度21.517294.6563.8%47.96蒸发器计算制冷量Q=28KW风量G=7000m³/H直管外径d0=7.94mm直管壁厚t=0.31mm水平间距S1=22mm竖直间距S2=19.05mm排数N1=3排列数N2=28列开始计算翅片管外径db=8.14mm铜管内径di=7.32mm当量直径deq=3.03mm单位长度翅片面积为：Ff=0.41㎡/m0.02㎡/m0.43㎡/m18.8050.80㎡迎面风速m/S=2.25最窄截面风速Wmax3.79m/S16.7827.09蒸发温度t0=7℃传热温差ΔT=13.78℃传热系数K40.01W/(㎡*K）换热器传热面积F=空气阻力（亲水膜）Pa=空气阻力（非亲水膜）Pa=根据干球和湿球温度计算空气状态参数温度范围0-200℃单位长度翅片间管外表面积为：Fb=单位长度翅片管总面积Ft=翅片管肋化系数β=含湿量d(g/kg)密度ρ（kg/m³)比体积v=1/ρ露点温度t1(℃）饱和水蒸气压力Pdb水蒸汽压力Pq10.501.1690.85614.623608.071681.5610.341.2130.82414.391838.451656.5710.331.1910.84014.382593.931655.22翅片厚度δ=0.1mm翅片间距Sf=1.8mm亲水膜0.007非亲水膜换热器长度L1.4m换热器深W(m)0.05715换热高H(m)绿色为输入参数，黄色为自动计算参数，根据干球和湿球温度计算空气状态参数翅片表面粗糙度系数mln(Pqb)ln(Pqb*)湿球Kts下饱和水蒸气压力Pdb*8.197.71292.152222.237.527.45288.151724.157.867.58290.151959.350.01130.616翅片表面粗糙度系数m