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In a drying process, rice husk is dried in a tray dryer. Drying air is at 100C with a 10% relative humidity. Drying from an initial moisture content of 0.5kg/kg dry solid to 0.3kg/kg dry solid requires 8 hours. The equilibrium moisture content is 0.04kg/kg dry solid when in contact with air at this temperature and humidity. Bulk density of the product is 800kg/m3. Determine the time required If the second batch of same material is dried from initial moisture of 0.3 to 0.10kg/kg dry solid. Assuming the critical moisture of the material in the same drying conditions is 0.3kg/kg dry solid. Use the appropriate equation Drying time (Constant Rate Period) tc=ARcms(XcXi) Drying time (Falling Rate Period) tf=ARcms(Xcxe)ln(XfXeXcXe) Total Drying time (Constant + Falling rate period) tT=ARcms[XiXc+(XcXe)ln(XfXeXcXe)]