A cooling tower is a special-purpose heat exchanger which operates on the basic principle of bringing water and air in direct contact with each other to lower down the temperature of the water flowing through it.
Cooling tower works on the principle of evaporative cooling to cool a continuous flow of water. Overheated water from the system flows through the cooling tower, where it is re-circulating and exposed to cool, dry air. Heat leaves the re-circulating coolibg tower system in the form of evaporation. Then, the colder water re-enters the air conditioning process to cool the system down. And the cooling system keeps on repeating again and again in the cooling tower.
Cooling towers are used in various industries such as petroleum refineries, metal processing, rubber production, textile industries, sugar production, chemical industries, die casting, HVAC, and many more.