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Selection and Summer Maintenance of Counter current Closed Cooling Tower

Author： Views: Time:2025-10-31

　　Selection and Summer Maintenance of Counter current Closed Cooling Tower

　　The service life of counter current closed cooling tower packing is generally 7-8 years, and it is produced using raw materials. The occurrence of the above problems is minimal, and aged packing must be replaced. If there is a lot of rainwater, it is recommended to replace the sprinkler water to prevent the coil from being corroded by rainwater.

　　1. In the cooling process of a counter current closed cooling tower, the cooling medium (soft water, oil or other liquids) is driven by the main circulating pump to circulate between the heat exchanger and the equipment to be cooled. The spray is evenly sprayed on the heat exchanger, forming an average water film outside the heat exchanger. The cold atmosphere enters the tower through the air inlet below the tower body and flows downstream with the spray water to the outside of the heat exchanger. There are two heat exchange methods in this process, namely heat conduction between the cold atmosphere and the cooling medium and heat exchange through the evaporation and heat absorption of the spray water. The saturated hot and humid atmosphere after receiving heat is discharged to the atmosphere by the fan, and other spray water flows into the water tank at the lower part of the tower body and is then transported to the spray system by the water pump. The sentence is:.

　　2. In this way, the cooling medium inside the heat exchanger is cooled down. There are two operating modes for closed cooling towers. Air cooling, air cooling+spray. The two forms of switching are automatically stopped by the electronic control system based on the operating conditions, achieving energy conservation and consumption reduction.

　　3. Choose based on the cooling fluid. Some cooling fluids have a certain degree of corrosiveness, so choosing the material of a closed cooling tower and avoiding chemical reactions with the cooling fluid. Aluminum zinc plated plates and stainless steel exhibit outstanding performance in corrosion resistance, with a service life that can adapt to different environments and usage requirements

　　How to maintain a countercurrent closed cooling tower in summer

　　1. Clean the air inlet/outlet of the equipment

　　Long term outdoor operation of the equipment requires regular maintenance and inspection of the air inlet/outlet, and removal of any blockages in the air inlet/outlet network.

　　2. Check the water distribution of the sprinkler head

　　Closed cooling towers generally use sprinkler water distribution. If the nozzle inside the cooling tower is partially blocked or if the nozzle falls off, it will cause uneven water distribution. It is crucial for cooling towers to regularly check the water distribution of the nozzles to avoid dry spots.

　　3. Pay attention to replenishing water for closed cooling towers in summer

　　The temperature rises in summer, and the evaporation rate of sprinkler water slightly increases compared to winter. Regularly check the water tank and replenish the water volume.

　　4. Damaged packing material

　　Common problems with the packing of counter current closed cooling towers include scaling and aging. Generally, cooling towers that have been in use for many years will have the problem of damaged packing. If the packing is extensively damaged, it will affect the temperature of the spray water, resulting in a cooling effect. The service life of cooling tower packing is generally 7-8 years, and it is produced using raw materials. The occurrence of the above problems is minimal, and aged packing must be replaced. Usually, closed cooling towers are used outdoors, and during rainy seasons, rainwater inevitably enters the spray circulating water of the cooling tower. Rainwater mixed with sulfur, carbon, etc., falling into the cooling tower can cause water acidification. The acidified cooling circulating water circulates in the cooling tower, and its corrosion rate is several times higher than the normal service life. If there is a lot of rainwater, it is recommended to replace the sprinkler water to prevent the coil from being corroded by rainwater. If there is relatively little rainwater mixed into the closed cooling tower, water quality treatment can be carried out by adding chemicals to neutralize the water quality.

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