翅片管换热面积计算

圆管管径d0m选取圆管壁厚δwm选取翅片高度Lfhm选取翅片厚度δfhm选取翅片间距δhm选取翅片管总管径dfhmd0+(2.Lf)管长Lhm取值（前期已填）每米管长的翅片数nfhm1/(δfh+δh)每米长管的翅片表面积Afhm2[2.2.(π/4).(df^2-d0^2)+π.df.δf]*Lh.nf每米长翅片间管表面积Arhm2π.d0.(1-nf.δf).Lh每米管外总表面积Ahhm2Afh+Ahh每米光管表面积Afcm2π.d0.1翅化比n/Ahh/Afc圆管翅片管翅化比计算0.0250.0020.01250.00060.00300.05001.00277.781.660.011.680.0821.33圆管翅片管翅化比计算