Air enters a 40-cm-diameter cooling section at 1 atm, 32°c, and 70 percent relative humidity at 120 m/min. the air is cooled by passing it over a cooling coil through which cold water flows. the water experiences a temperature rise of 6°c. the air leaves the cooling section saturated at 20°c. determine (a) the rate of heat transfer, (b) the mass flow rate of the water, and (c) the exit velocity of the airstream.