Closed Circuit Cooling Tower operate in a manner simillar to open cooling tower except that the heat load to be rejected is transfered from the process fulid to the ambient air through a heat exchange oil. The coil serves to isolate the process fluid from the outside air, keeping it clean and contaminate free in a closed loop. This creates two separate fluid circuits.

a external circuit, in which spray water circulates over the coll and mixes with the out side, an internal circuit, in which the process field circulates inside the coil. During operation, heat is transfered from the internal circuit, through the coil to the spray water, and then to the atmosphere as a portion of the water, and then to the atmosphere as a portion of the water evaporates. During the time of shortage of cold water supply we have to go for Closed Circuit Cooling Tower. The cooling water is circulates in a close loop consisting tower unit. We may add some percent of the cooling water from the available water resources to the closed circuit cooling system and we can reduce the cooling tower size. Mixing ration means the percentage of the added water. If our mixing ratio is zero, it is called completely closed system. When the mixing ratio is 100%, it is called an open system. Closed Circuit Cooling Tower are suitable for Thermal Power Plant for more information about Closed Circuit Cooling Tower send mail to jc@thecoolingtowers.com.