In the commercial production of sugar (sucrose), the product crystals are washed and centrifuged to partial dryness. then the crystals are sent to a rotary dryer where they are contacted with a hot stream of air that reduces the moisture content from 1.0 wt% to 0.1wt%. the ratio of wet sugar to inlet air fed to the dryer is 3.3 kg wet sugar/kg inlet air. the inlet air contains 1.5 mol% water. draw and label the flowchart and do the degree-of-freedom analysis.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.