PROII 数据报告英文简写疑问？ 在proii中，做一个浮阀精馏塔。报告里面有一部分是精馏塔塔板和塔尺寸的数据，其中在表头design 中有个ff的数据项，请问这个ff 是代表什么意思？另外np又代表什么意思，请高手指点。谢谢。 tray vapor liquid vload -- design -- next smaller next larger np m3/s m3/s m3/s dia, mm ff dia, mm ff dia, mm ff ---- ----- ------- ----- ------- ---- ------- ---- ------- ---- -- 2 0.288 0.00008 0.021 644.6 54.4 610. 60.9 762. 39.0 1 mechanical restriction on tray 2, for ff = 70.0, calcd. dia = 568.4 diameter is less than 1219.2 mm and dc width is less than 101.6 mm 3 0.288 0.00008 0.021 644.5 54.4 610. 60.9 762. 39.0 1 mechanical restriction on tray 3, for ff = 70.0, calcd. dia = 568.3 diameter is less than 1219.2 mm and dc width is less than 101.6 mm 4 0.288 0.00008 0.021 644.3 54.4 610. 60.8 762. 39.0 1 mechanical restriction on tray 4, for ff = 70.0, calcd. dia = 568.1查看更多
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