The composite flow closed cooling tower is mainly composed of three parts: heat exchanger, water circulation system and fan.The upper part is equipped with a sprinkler and a water plate at the bottom.During the operation of the work, the circulating liquid enters the pipe from the snake pipe and exchanges the spray water and air outside the coil through the coil wall. With the super wind of the fan, the spray water can fully cover the outer surface of the coil, thus improving the heat transfer efficiency.After the temperature of spray water and air suction disk wall, the temperature rises, part of the water changes from liquid to gas, taking away a large amount of volume on the pipe wall. After the water collector in the hot and humid air condenses into the heat exchange layer of the packing layer, and the hot air is discharged.The spray water of the heat exchange layer is cooled by the fresh air flowing through, and the temperature decreases, flows into the sink, and then sent into the spray system by the pump to continue the circulation.The water content of the lost air is automatically adjusted by the water level control device.