Date: March 8, 2016

Tutorial EKC 316 Separation Process

Topic: Humidification/Dehumidification

Problem 1:

Moist warm air is to be cooled and dehumidified to a wet-bulb temperature of 30ºC

using water of 25ºC in a dehumidification column. The air enters the tower with a dry-

 bulb temperature of 85ºC and wet-bulb temperature of 45ºC at 4800 kg/m 2h rate. The

overall gas phase mass transfer coefficient is estimated to be 2150 kg/ m3h. The flow

rate of water is 1.4 times the minimum. Calculate height of the tower.

Azam T Sem II, 2015/2016