Spray drying is a process in which a liquid containing dissolved or suspended solids is injected into a chamber through a spray nozzle or centrifugal disk atomizer. The resulting mist is contacted with hot air, which evaporates most or all of the liquid, leaving the dried solids to fall to a conveyor belt at the bottom of the chamber. Powdered milk is produced in a spray dryer 6.0m in diameter by 6.0m high. Air enters at 181C and 40.0cm H2O (gauge). The milk fed to the atomizer contains 67.0% water by mass, all of which evaporates. The outlet gas contains 12.00 mole\% water and leaves the chamber at 89.0C and 1atm (absolute) at a rate of 311m3/min2 Calculate the production rate of dried milk and the volumetric flow rate of the inlet air. Estimate the upward velocity of air (m/s) at the bottom of the dryer. mmVi=vi=m3/min=kg/minm/s