The cooling tower is a device that uses water as a circulating coolant to absorb heat from the system and discharge it into the atmosphere to reduce the temperature of the water; its cooling is to use water and air to flow in contact with each other to exchange cold and heat to produce steam, and steam volatilizes to take away heat to achieve evaporation and heat , Convection heat transfer and radiation heat transfer, etc., to dissipate the waste heat generated in the industry or in the refrigeration and air conditioning to reduce the temperature of the water to ensure the normal operation of the system. The device is generally barrel-shaped, so it is called a cooling tower.

The cooling tower is a comprehensive product integrating aerodynamics, thermodynamics, fluidics, chemistry, biochemistry, materials science, static and dynamic structural mechanics, processing technology and other disciplines. Water quality is a multi-variable function, and cooling is a multi-factor, multi-variable and multi-effect integrated process.