$(3)$ Granular insoluble solid material wet with water is being arred in the constant drying period in a square pan sides and bottom are insulated. Air flow paralel to constant. Pan dimensions $=33cm.$Depth of material $22cm,$ air velocity $3\mathrm{.}5\frac{m}{s},$ the dry bulb temperature$=63C,$ Wet bulb temperature is $27C$ feed weight $=9\mathrm{.}5kg,$ initial moisture concent $0\mathrm{.}34,$ final moisture concent $0\mathrm{.}18kgH2$O dry solid. Air Bulb temperature is $-34\mathrm{.}1$ celus. Freezing temperature $-4$Celcius. After drying process product to be frozen in a air blast freeze. Heat transfer coefficient is $22\frac{W}{m^2}k.$ Density of unfrozen solid is $1222\frac{kg}{m^3}$ and thermal conductivity of solid is $1,122\frac{w}{m^2}K.$ Until solid material reeches freezing temp. freczer must be workod for $5$ min for $1$ celcius decreasing. Air Blast freezer temperature and freezeng temp are given Predict drying rate and time needed to total process.