A counterflow tunnel dryer was used to dry the apple slices from an initial moisture content of 65% to 5% (wet basis). Hot air enters at 95°C with 1% RH, and exits at 52.0°C. If the temperature of the...

A counterflow tunnel dryer was used to dry the apple slices from an initial moisture content of 65% to 5% (wet basis). Hot air enters at 95°C with 1% RH, and exits at 52.0°C. If the temperature of the product throughout the dryer is 20 °C and the specific heat of the solid product is 2.2 kJ/(kg °C), determine the rate of hot air required to dry the wet product at a rate of 160 kg/hour. Determine the RH of the air exiting the dryer. a. Drying air rate (ma) = Answer kg/hour. b. Dryer exhaust air RH = Answer %