Cooling tower is the use of water as a circulating coolant, from a system that absorbs heat discharged into the atmosphere to reduce the water temperature of the device; its cold is the use of water in contact with the flow of air for cold and heat exchange to produce steam, steam volatilization to take away the heat to achieve the principle of evaporation and dissipation of heat, convection heat transfer and heat transfer by radiation, etc. to dissipate the residual heat generated by industrial or refrigeration and air-conditioning to reduce the water temperature of the Evaporation cooling device to ensure the normal operation of the system, the device is generally barrel-shaped, so called cooling tower.
Cooling tower is used to describe the direct (open circuit) and indirect (closed circuit) heat dissipation equipment.
While most come up with a "cooling tower as an open direct contact heat sink", an indirect cooling tower, sometimes called a "closed circuit cooling tower" is but also a cooling tower.