Air enters a cooling tower at a rate of 1100 cubic meters per minute, at 15C and 65% relative humidity. Atmospheric pressure is 100 kPa. Water enters the tower at 38C and leaves at 17C. Air leaves the tower at 31C and saturated. Using a psychrometric chart calculate the absolute humidity of the air leaving the cooling tower. 0.029 kg water vapour/kg air 0.069 kg water vapour/kg air 0.0101 kg water vapour/kg air 0.364 kg water vapour/kg air