Air with a wet bulb temperature of 27 C and a relative humidity of 20% is fed into a dryer at a rate of 5,000 m3/hr. to dry slices of persimmons. The air leaving the dryer is saturated and cannot hold any more water vapor. The persimmons enter the dryer at a rate of 55 kg (wet weight)/hr with a moisture content of 1000% (dry weight basis). What is the wet basis moisture content of the persimmons leaving the dryer?

Approach: Use psychrometric chart to find specific volume of inlet air as well as moisture content of inlet and outlet air. Use a water mass balance to solve for the moisture content of the dried fruit.