The aim of a water cooling tower is to remove the heat from the water. To achieve this aim, the water is sprinkled homogenously on the fillings that are designed modern. The air whose relative humidity is low is thrown away to the atmosphere from the blinds level anti-water flow. 

Cooling of the water is mainly done by evaporation and conduction. 

The air enters into the tower at the level of blinds lower parts of the tower and it is thrown away via fan over the fillings. 

Hot water is collected in the pool as cooled by sprinkled it on the fillings with the aim of cooling it and it is sent to the system.

The tower is constituted from three main parts with the aim of completing the cooling: 

1- Upper Part : fang group, eliminator, hot water distribution system, service window

2- Medium Part : Filling and support structure

3- Lower Part: constituted from the parts such as cold water pool, pump suction filter, drain, and overflow.