A granular insoluble solid material with a depth of $25\mathrm{.}4$ mm is dried in a perforated pan with dimensions of $0\mathrm{.}61$m$*0\mathrm{.}61$m at a constant rate period. The pan contains $11\mathrm{.}34$ kg of dry solid having a moisture content of $0\mathrm{.}35$ kg H$2$O$/$ kg dry solid, and the material is to be dried in the constant rate period to $0\mathrm{.}22$ kg H$2$O$/$ kg dry solid. After the drying process this product is to be frozen in an air blast freezer at $-32$C$.$ Freezing temperature of solid material is $-3\mathrm{.}1$C$.$ Until solid material reaches freezing temperature the freezer must be worked for $10$ minutes for $1$C decreasing. The heat transfer coefficient is $22$W$/$mK$.$ Density of unfrozen solid is $1122$kg$/$m$3$ and thermal conductivity values of frozen solid is $1\mathrm{.}122$W$/$mK$.$ Calculate the drying rate and the time in hours needed for the total process.