How does closed cooling tower achieve water saving in power industry

Closed cooling towers are widely used in the power industry and other industrial fields, mainly due to their significant water-saving and energy-saving advantages. This article will discuss these advantages in detail, explaining how they work, their technical implementation, and the specific benefits they bring.

Water-saving advantage

1. Closed circulation system:

Principle: The closed cooling tower adopts a closed heat exchanger, and the cooling medium is circulated in the coil tube and isolated from the external environment. This avoids direct evaporation loss of the cooling medium.

Benefits: The water consumption of traditional open cooling tower mainly comes from evaporation loss, splash loss and sewage loss. Closed cooling towers significantly reduce these losses through a closed system, resulting in a significant reduction in water consumption.

2. Reduce evaporation loss:

Principle: In the closed cooling tower, the cooling medium is not in direct contact with the external environment, and the evaporative cooling process only occurs between the spray water and the air.

Benefits: This design not only reduces the amount of water evaporation, but also improves the efficiency of water resources, especially suitable for water resources shortage or high water quality requirements in the area.

3. Water recycling:

Principle: After the spray water in the closed cooling tower passes through the collection pool at the bottom of the cooling tower, it is re-sprayed to the heat exchange coil through the circulation pump to achieve recycling.

Benefits: This design reduces the need for fresh water replenishment, further conserving water and reducing sewage discharge.