Closed cooling towers are the main products of GH Cooling, they are popular with our domestic and overseas clients. 

A closed circuit cooling tower, abbreviated as a closed cooling tower, is a device that uses water for heat exchange and is widely used in industries such as power, metallurgy, chemical, pharmaceutical, air conditioning, and refrigeration industries. The working principle of a closed cooling tower is to transfer heat from water to air by bringing it into contact with the outside air, to achieve the cooling effect of water. Compared with open cooling systems, closed cooling towers can better avoid water contact with the external environment, reduce water evaporation loss and water pollution, and improve energy utilization efficiency.

The following will provide a detailed introduction to a closed cooling tower's structure, working principle, advantages, and application areas.

A closed cooling tower mainly comprises an outer shell, a fan, fill packing, a water spray system, a return water system, a discharge water system, etc. The shell is the main structure of the cooling tower, which can prevent direct contact between air and water. The fan is used to introduce external air into the tower, forming air convection and accelerating the cooling rate of water. The function of fillers is to increase the contact area between water and air, thereby improving heat transfer efficiency. The water spray system evenly sprays circulating water onto the filling material, allowing it to exchange with the outside air. The return water system collects the cooling water that has passed through the packing and circulates it again. The drainage system is used to discharge sewage from the cooling tower.

The working principle of a closed cooling tower is to achieve water cooling through air convection and conduction. After entering the cooling tower, the air comes into contact with the sprayed water, absorbs heat from the water, and thus lowers the water temperature. At the same time, the sprayed water expands the surface area of the filler, increasing the contact area with the air and accelerating the heat transfer rate. The cooled water is collected and pumped to the relevant equipment through a circulation pump to achieve cooling.