Closed cooling tower, also called evaporative air cooler，the tube heat exchanger is installed inside the tower, the cooling efficiency is guaranteed by the heat exchange of air circulation and water spray and circulation . Because it is a closed cycle, it can ensure that the water quality is not polluted, which effectively protects the efficient operation of the main equipment and improves the service life. When the outside temperature is low, the sprinkler system can be stopped to save water.

On April 21, 2020, DASEN staff installed and commissioned closed cooling tower on-site feedback. Details are as follows: