A dryer reduces the moisture content of 100 kg of a potato product from 80% to 10% moisture. If 250 kg of steam at 67.8kPa gauge is used to heat 49 800 m3 of the air is cooled to 70oC in passing through the dryer. Assume potato enters at 24oC and leaves at the same temperature as the exit air. The specific heat of air can be assumed to be 1.0 kJ/kg.K and that of potatoes is 3.52 kJ/kg. K. The density of the is 1.06 kg/m3. Calculate: (a) The water loss (b) The energy used by the potato (c) The energy given up by the air (d) The thermal efficiency of the air drying process. (e) the thermal efficiency of the air drying process (f) the absolute pressure of the steam (g) the energy given up by the steam (h) The thermal efficiency of the steam drying process [17 marks]