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Closed type cooling tower

Closed type cooling tower

Detailed introduction

NSC-Closed type cooling tower

The circulating fluid of the closed cooling tower is through the wall of the coil with spray water

Conducting exchange or heat transfer to air for cooling purposes

· The circulating fluid operates in a closed environment without evaporation, concentration, contamination or environmental pollution;

· Can carry out dry operation;

· Stable and safe operation, suitable for continuous operation system

Performance comparison between closed type cooling tower and open type cooling tower


Closed type cooling tower

Open type cooling tower

1. The circulating fluid operates in a sealed manner, so it will not be contaminated, evaporated, or concentrated, and there is no need to circulate without adding water or medicine, thus ensuring the service life of the related equipment and making daily management very convenient.


2.  It does not require frequent downtime for maintenance, operates stably and safely, reduces the failure rate of related equipment, and is suitable for systems that require continuous operation.


3.  The circulating fluid is not exposed to sunlight and does not come into contact with air. So it will not produce algae and salt crystals, and there is no need to remove algae or salt to ensure the high-performance operation of the system


4. It can operate in a dry manner and will not breed various bacteria. Therefore, it is particularly suitable for fields with air purification needs and is often used in areas with water scarcity and dryness


5. When the fluid is a volatile and irritating solution, using a closed loop system will not pollute the environment. Therefore, it is widely applicable to systems with strict fluid requirements


6. When operating in winter or on a plum blossom day, the anti white smoke operation mode can be used to eliminate or reduce white smoke, try to avoid pollution, eliminate the phenomenon of smoke around buildings, and maintain a hygienic and beautiful environment


1. The circulating fluid is concentrated due to evaporation and requires constant dosing and water replenishment. Moreover, due to direct contact with air, the fluid is prone to contamination. When encountering sulfurization, the fluid undergoes an acidic reaction, causing damage to related equipment


2. Frequent shutdown for maintenance is not suitable for systems that require continuous operation.


3. The open operation of the circulating fluid, exposed to sunlight, is prone to the formation of algae and salt crystals, thereby affecting the performance of the system.


4. Unable to perform dry operation.


5. When the fluid is volatile toxic. There is a safety hazard when using an open cooling tower operating mode for irritating solutions


6. Anti-white smoke operation mode needs to be designed and manufactured separately.


   Heat exchangers - Core Technology for closed Towers

● The new type of heat exchanger is equipped with filling materials between the coil, so that the shower water timely and fully heat exchange, the water temperature is consistent, so that the coil heat exchange effect has been unprecedented guarantee and improve.

● As the flow rate of water is slowed down, the water film can cover the whole surface of the coil evenly, without leaving dry points.

● Change the structure of the coil frame, so that the tower becomes a more scientific cross flow type, to ensure that the tower inspection at any time unimpeded.

● The coil can be disassembled by the humanized design concept, which changes the closed tower can not be cleaned and maintained. The whole service life of closed tower is improved and the maintenance cost is reduced.

● The material is made of phosphorus deoxygenated copper tube with high thermal conductivity, and the appropriate wall thickness ensures the heat exchange performance.

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