The characteristics of a ceramic mix for porcelain making was investigated by forming a cubical body of 100 mm edge by mixing 1400 g of the mix with an appropriate amount of water. The lab results expressing the relation between moisture content and time (min) were as follows: For constant rate period: For falling rate: Find the critical moisture content, the constant and final drying rates (g.cm.h).

The characteristics of a ceramic mix for porcelain making was investigated by forming a cubical body of 100 mm edge by mixing 1400 g of the mix with an appropriate amount of water. The lab results expressing the relation between moisture content X and time (t min) were as follows:

For constant rate period:

X=0.165-0.0019t

For falling rate: X=0.192e^(-0.027t)

Find the critical moisture content, the constant and final drying rates (g.cm-2.h-1).