How a closed cooling tower works

Yunuo Cooling Technology will introduce the working principle of closed cooling tower to you.

The complete set of closed cooling tower equipment consists of main engine, water tank, circulating water pump and electric control cabinet. The main engine is composed of shell, heat exchanger, fan, spray pump, water collector, water tank and pipeline valve and other components.

During the working process, the cooling medium (soft water, oil or other liquid) is driven by the main circulating pump to circulate between the heat exchanger and the equipment to be cooled, and the spray water is evenly sprayed on the heat exchanger, on the outer surface of the heat exchanger A uniform water film is formed, and the cold air enters the tower from the air inlet below the tower body, and flows through the surface of the heat exchanger countercurrently with the spray water. Heat conduction and heat exchange of spray water evaporation and heat absorption, the saturated hot and humid air after absorbing heat is discharged into the atmosphere by the fan, and the rest of the spray water flows into the water tank at the bottom of the tower body, and is transported to the spray system by the water pump. In this way, the cooling medium in the heat exchanger is cooled down and cooled.

There are two modes of operation for closed cooling towers. Air cooling, air cooling + spray. The switching of the two modes is automatically carried out by the electronic control system according to the requirements of the working conditions to achieve energy saving and consumption reduction. The main principle of the closed cooling tower is that the spray water evaporates on the outer wall of the coil to cool the cooling water flowing in the tube, and at the same time, the generated water vapor is taken away in time by the fan. A small part of the spray water evaporates, and the rest is collected by the chassis and recirculated. The higher temperature cooling water from the condenser is pressurized by the cooling water pump and sent to the cooling coil of the closed cooling tower. On the other hand, the water in the cooling tower chassis is pumped into the spray coil by the pipeline pump, and sprayed on the outer surface of the cooling coil to vaporize and absorb the heat of the cooling water in the coil, so that the temperature of the cooling water can be reduced. At the same time, by the suction effect of the fan installed on the water baffle, the air flows through the cooling coil from bottom to top, and exchanges sensible heat and latent heat with the spray water, which not only strengthens the cooling coil The surface heat is released, and the water vapor formed by evaporation can also be taken away in time to accelerate the evaporation of water and improve the cooling effect.

During the working process of the closed working tower, the cooling medium (soft water, oil or other liquid) is driven by the main circulating pump to circulate between the heat exchanger and the equipment to be cooled, and the spray water is evenly sprayed on the heat exchanger. A uniform water film is formed on the outer surface of the heater. The cold air enters the tower from the air inlet below the tower body, and flows countercurrently with the spray water through the surface of the heat exchanger. There are two heat exchange methods in this process, namely, cold air and cooling. The heat conduction between the media and the heat exchange of the evaporation and heat absorption of the spray water, the saturated hot and humid air after absorbing the heat is discharged into the atmosphere by the fan, and the rest of the spray water flows into the water tank at the bottom of the tower body, and is transported to the spray by the water pump. system. In this way, the cooling medium in the heat exchanger is cooled down and cooled.

The above is the relevant content introduced by Uno Cooling Technology.