The "dry" Murphree efficiency calculated thus far takes into account the vapor and liquid resistances and the vapor-liquid contact patterns, but is uncorrected for the effects of entrainment and weeping. This correction converts the dry efficiency to a "wet" or actual Murphree tray efficiency. Colburn [Eq. (14-98), under "Entrainment"] incorporated the effect of entrainment on efficiency, assuming perfect mixing of liquid on the tray.
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