A batch removes water from a solid at a rate of 50 kg/h during the constant rate period. The critical moisture content is 0.3kg H2O /kg dry solid . The equilibrium moisture content of the material is 0.02 kg H2O/ kg dry solid. The dryer is initially charged with 350kg of material which contains 60% dry material and the remainder is moisture. The final product contains 0.05kg H2O/ kg dry solid and the falling rate period can be represented by a straight line
1. Draw a schematic that depicts the process
2. Determine the total drying time to produce the product