Closed circuit cooling tower

A cooling tower is a device that is used to cool water in industrial and air conditioning systems such as chillers. In general, cooling towers are divided into two groups, open circuit and closed circuit. In this article, the components, applications, advantages, etc. of the closed circuit cooling tower and also how this equipment works are discussed. Stay with us in the rest of this article to learn more about the closed circuit cooling tower.

How a closed circuit cooling tower works

Inside the closed circuit cooling tower, there are a series of coils, and the cooling fluid flows through these coils. The cooling water is sprayed on the coils from above by the water distribution arm or water spray nozzles, and the heat is transferred through the walls of the pipes to the water that has flowed on the coils, and this is how heat exchange is done in closed circuit cooling towers.

Types of closed circuit cooling tower

The closed circuit cooling tower includes two dry and hybrid models, each of which is briefly described below.

Dry closed circuit cooling tower

Dry closed circuit cooling tower is the first offered model of closed cycle towers. This model has a completely air-cooled system, and one of its disadvantages is the decrease in the amount of heat energy exchange, or in other words, the decrease in the refrigeration efficiency of the device in the hot seasons.

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Hybrid closed circuit cooling tower

Hybrid closed circuit cooling tower is actually a combination of wet and dry open circuit cooling tower. This modeling is the last generation of closed circuit cooling tower. It often has a coil with a size of 1.2, 4.3, 8.5, 8.7 inches with copper material. In hot seasons, its mechanism changes to stabilize heat transfer. The auxiliary system of open-circuit water spraying comes with the help of air-cooled mechanism.

Closed circuit cooling tower components

Among the main components of the tower, the following can be mentioned.

• Body
• Fan
• Coil
• Air intake
• Hot fluid inlet to the coil tubes
• Cooled fluid outlet

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Features of closed circuit cooling tower

In the closed circuit cooling tower, the cooling water inside the coil does not have direct contact with the air and no solutes, impurities and pollution are added to it. Water (or any other process fluid) flows in a completely clean closed cycle without any contamination, thus no deposits are formed on the internal surfaces of the heating coils inside the tower and other equipment related to the cooling tower such as condensers and heat exchangers. . Also, due to the significant reduction of sedimentation and clogging in these towers, the use of closed circuit technology in cooling towers can help to reduce or eliminate the need for physical/chemical purification of water in the cooling tower system.

Application of closed circuit cooling tower

Among the applications of the closed circuit cooling tower, we can mention the cooling of power plant, petrochemical, refinery, induction furnace and metal melting equipment.

Advantages of closed circuit cooling tower

• Low energy consumption, especially lower water consumption compared to the open circuit cooling tower
• Low sedimentation
• No need for additional equipment to purify circulating water
• Reducing costs due to compensatory water supply
• Low maintenance costs due to low sedimentation
• High maintenance period
• High efficiency and cooling efficiency
• Stability in water cooling performance and...

Final word

The first and most reliable specialized collection in the field of building facilities equipment and all air conditioning devices since 2013 is Damatajhiz specialized collection, you can refer to the site of this collection to view the models, to know the updated price and to buy all types of cooling towers. For more information, you can get advice from the experts of Damatajhiz Engineering and Manufacturing Company by dialing: 021-88822550.

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