4.1.3 Hydraulic Tray Pressure Drop
The weight of liquid on a tray is created by the weir height plus the crest height. We have defined the crest height (in inches of clear
liquid) in Chap. 3, as Crest height 0.4 (GPM/inch outlet weir length)0.67 The actual height of fluid overflowing the weir is quite a bit greater than we calculate with this formula. The reason is that the fluid overflowing the weir is not clear liquid, but aerated liquid—that is,
The weight of liquid on a tray is created by the weir height plus the crest height. We have defined the crest height (in inches of clear
liquid) in Chap. 3, as Crest height 0.4 (GPM/inch outlet weir length)0.67 The actual height of fluid overflowing the weir is quite a bit greater than we calculate with this formula. The reason is that the fluid overflowing the weir is not clear liquid, but aerated liquid—that is,