A granular insoluble solid material wet with water is being dried in the constant$-$rate period in a pan $0\mathrm{.}61m0\mathrm{.}61m$ and the depth of material is $25\mathrm{.}4mm.$ The sides and bottom are insulated. Air flows parallel to the top drying surface at a velocity of $3\mathrm{.}05\frac{m}{s}$ and has a dry bulb temperature of $60C$ and wet bulb temperature of $29\mathrm{.}4C.$ The pan contains $11\mathrm{.}34kg$ of dry solid having a free moisture content of $0\mathrm{.}35kg{H}_2\frac{O}{k}g$ dry solid, and the material is to be dried in the constant$-$rate period to $0\mathrm{.}22kg{H}_2\frac{O}{k}g$ dry solid. After the drying process this product is to be frozen in an air blast freezer at $-32C.$ Freezing temperature is solid material is $-3\mathrm{.}1C.$ Until solid material reaches freezing temperature the freezer must be worked for $5$min for $1C$ decreasing. The heat transfer coefficient is $22\frac{W}{m^2}K.$ Density of unfrozen solid is $1122k\frac{g}{m^3}$ and thermal conductivity values of frozen solid is $1\mathrm{.}122$ W$/$mK$.$ Predict the drying rate and the time in hours needed for the total process.