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Working process and exchange requirements for closed water cooling towers
Jan 08, 2019

In the process of the closed water cooling tower, the cooling medium is mainly driven by the main circulation pump to circulate between the heat exchanger and the equipment to be cooled, and the spray water is evenly sprayed on the heat exchanger, in the heat exchange The outer surface of the device forms a uniform water film, and the cold air enters the tower mainly from the air inlet below the tower body, and flows back through the heat exchanger surface with the spray water. In the process, there are two heat exchange modes, namely, cold. The heat transfer between the air and the cooling medium and the heat exchange of the spray water evaporating heat, the saturated hot humid air after the heat is absorbed by the fan to the atmosphere, and the rest of the spray water flows into the water tank at the lower part of the tower body, and is then transported by the water pump. To the spray system. In this way, the cooling medium in the heat exchanger is cooled and cooled.

The main principle of the closed water cooling tower is that the spray water evaporates on the outer wall of the coil and the cooling water flowing through the cooling pipe. At the same time, the steam generated by the fan is taken away in time, and the spray is sprayed. A small portion of the water was evaporated and the rest was collected by the chassis to recirculate. The higher temperature cooling water from the condenser is pressurized and sent by a cooling water pump to the cooling coil of the enclosed cooling tower.

The closed water cooling tower mainly uses a pipeline pump to suck the water in the cooling tower chassis into the spray coil, and the spray on the outer surface of the cooling coil vaporizes and absorbs the heat of the cooling water in the coil, thereby making the temperature of the cooling water At the same time, the suction of the fan mounted on the water retaining plate allows the air to flow from the bottom to the top through the cooling coil, and exchanges sensible heat and latent heat with the spray water, so that not only the cooling can be enhanced. The outer surface of the coil is exothermic, and the water vapor formed by evaporation can be taken away in time to accelerate the evaporation of water and improve the cooling effect.