A batch of solid with an initial weight of 160 Kg is to be dried from 25% to 6% moisture (wet-based). The drying surface

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A batch of solid with an initial weight of 160 Kg is to be dried
from 25% to 6% moisture (wet-based). The drying surface is 1 m2 /40
kg of dry solid, the experimental drying rate data within the
falling-rate period is given in the table below
Determine the corresponding falling-rate drying time for this
batch of wet solid