Mass Transfer
The wetted wall tower is used to determine

Individual mass transfer co-efficient (M.T.C.) in gaseous system
M.T.C. of individual components in a liquid-liquid system
M.T.C. of liquid in liquid-gas system
The overall M.T.C. of the system

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Mass Transfer
Channelling is most severe

In dumped packing of regular units
In towers packed randomly with crushed solids
At very high liquid flow rate
In towers packed with stacked packing

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