A cooling tower is a kind of equipment that uses the contact of water and air to dissipate the waste heat produced in industry or refrigeration and air conditioning by evaporation. The process of cooling water in the cooling tower belongs to the process of heat and mass transfer. The cooled water is distributed to the packing inside the cooling tower by nozzles, water distributors, or water distribution plates, which greatly increases the contact area between water and air. The air is carried into the cooling tower by the fan. Part of the water absorbs heat and gasifies under the condition of constant pressure so that the temperature of the surrounding liquid water decreases. The basic principle is: the dry (low enthalpy value) air enters the cooling tower from the air inlet network after being pumped by the fan; the high-temperature water molecules with high saturated steam partial pressure flow to the air with low pressure, and the water with damp heat (high enthalpy value) is sprinkled into the tower from the water seeding system. When water drops contact with air, on the one hand, due to the direct heat transfer between air and water, on the other hand, due to the pressure difference between the surface of water vapor and air, evaporation occurs under the action of pressure, which takes away the latent heat of evaporation and takes away the heat of water, that is, evaporation heat transfer, so as to achieve the purpose of cooling.