Efficiency of a tray tower, percent

F,Fp

Packing factor, values listed in Table 10.1, ft-1

Fw

Flow parameter, given by Eqs. (8.3) and (8.21)

Fpd

Dry-bed packing factor, values listed in Table 8.3, ft"1

Frr

Froude number of the liquid. Given by Eq. (8.20) for the Bravo et al. pressure drop correlation, and by Eq. (9.18) for the Bravo and Fair efficiency correlation, dimensionless

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