The working principle of the cooling tower is quite impressive. Cooling in the cooling towers is caused by partial evaporation of water and heat exchange with air. The water in the cooling tower flows over the droplet, flowing with droplets or a thin layer.
Thus, air flows through the channels. There is such a regularity: When 1% water evaporates in the cooling towers, the temperature of the remainder decreases by 6 ° C. Liquid loss is compensated by an external source. If necessary, fresh water is subjected to purification (filtration).
The most complicated element of the cooling tower is the fan outlet, which is determined by the material on which the design is built.
Hot water enters the cooling tower where it is cooled down to the desired temperature, depending on the design and design of the cooling tower.
Water cooling can be performed:
- Reverse flow of atmospheric air (fan cooling towers);
- Spraying hot water on a special filling with an improved area, water spreading by a thin film and cooling due to slow flow (tower, atmospheric cooling towers);
- By spraying water on special channels and by natural withdrawal of atmospheric air (ejection cooling towers).
In any case, the water passes through the air, which gives a portion of the heat and thus reduces its temperature. After achieving the required temperature, the water returns to the heat exchangers or other devices that need to reduce the temperature.