Air enters an evaporative cooler at 1 atm, 36 C and 20% relative humidity at a rate of 4 m³/min. It leaves at 90% relative humidity. Determine the exit temperature and the mass flow rate of the water required. (20.5 C, 0.028 kg/min) Water mo Humidifier 1 atm 36°C AIR $2=90% +1=20%