The difference between closed cooling tower and open cooling tower

Jiangsu Yunuo Cooling Technology Co., Ltd. will introduce the difference between closed cooling tower and open cooling tower in detail:

closed cooling tower

The differences between open cooling towers and closed cooling towers are summarized in the following points:

1. The cooling principle is different. As stated in the above concepts, the medium of the closed cooling tower is fully enclosed in the cooling coil and does not directly touch the air, while the medium of the open cooling tower is cooled directly through the packing.

2. Different cooling methods. The closed cooling tower is a dual-cycle cooling method, that is, a combination of air cooling and water cooling, while the open cooling tower is a single-cycle cooling method with only air cooling.

3. The cooling medium is different.

4. The cooling temperature is different. The closed cooling tower can cool high temperature medium, while the open cooling tower can only cool the water below 65℃ in principle, which largely depends on the raw material of the heat sink.

5. The price is different. The purchase cost of closed cooling towers is relatively high, generally 3-5 times higher than that of open cooling towers.

6. The energy saving effect is different. The drift rate and transpiration of the closed cooling tower are much lower than that of the open cooling tower.

7. The degree of protection of the cooled equipment is different. The circulating fluid operates in a closed manner, so it will not be polluted, evaporated, concentrated, and does not need to be replenished with water, thus ensuring the operability and life of the associated equipment, and the daily management is also very convenient; while the open cooling tower circulating fluid is concentrated due to transpiration. It must be added with medicine and water all the year round, and because the fluid directly touches the air, it is easy to be polluted. When it encounters the vulcanization geography, the fluid will react with acid, causing damage to the associated equipment.

8. The degree of maintenance and protection is different. Closed cooling towers do not require frequent shutdowns for maintenance and protection, operate stably and safely, reduce the failure rate of associated equipment, and are suitable for systems that require continuous operation; while open cooling towers require frequent shutdowns for maintenance and protection, and are not suitable for systems that require continuous operation.

9. Different performance. For example, because the circulating fluid of the closed cooling tower has no sunlight and does not touch the air, algae and salt crystallization will not occur, "no need to remove algae and salt", and then ensure the high-performance operation of the system; while the circulating fluid of the open cooling tower will not occur. Open operation, exposed to the sun, algae and salt crystallization easily occurs, and then affect the performance of the system.

10. Environmentally friendly. The closed cooling tower can run dry and will not breed all kinds of germs, so it is especially suitable for occasions where there is a need for air purification, and it is often used in water-deficient and dry areas; open cooling towers cannot be used for dry operation.

11. Security. When the fluid is a volatile or toxic or irritating solution, the closed cooling tower uses a closed circulation system, which will not pollute the environment, so it is widely used in systems with strict requirements on the fluid; while the open cooling tower is used when the fluid is volatile. When toxic and irritating solutions are used, there are potential safety hazards in the operation of open cooling towers. To sum up, there are big differences between open cooling towers and closed cooling towers, but the cooling towers are not good or bad, only if they are suitable for the needs of the cooling system. Different cooling systems provide different cooling methods and cooling tower types. !

closed cooling tower

The above is the full content of the differences between closed cooling towers and open cooling towers introduced by Jiangsu Yunuo Cooling Technology Co., Ltd. for you. If you have any questions, please feel free to come and consult!