What is the difference between an open cooling tower and a closed cooling tower?
The difference between an open cooling tower and a closed cooling tower can be summarized into the following points for description:
1. The cooling principle is different.
As stated in the above concepts, the medium of the closed cooling tower is a fully closed circulation in the cooling coil and does not directly contact with the air, while the medium of the open cooling tower is cooled directly through the packing.
2. Different cooling methods.
The closed cooling tower realizes 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.
The closed cooling tower can directly cool the medium such as water, oil, alcohol, quenching water, salt water and chemical liquid, with no loss of medium and stable composition, while the open cooling tower can only cool water in principle.
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 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 evaporation of closed cooling towers are much lower than those of open cooling towers.
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 usability 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 evaporation. It must be added with medicine and water all the year round, and because the fluid is in direct contact with the air, it is easy to be polluted. When it encounters vulcanization, the fluid will react with acid, causing damage to the associated equipment.
8. The degree of maintenance is different.
The closed cooling tower does not need to be shut down frequently for maintenance, and the operation is stable and safe, which can reduce the failure rate of the associated equipment, and is suitable for systems that require continuous operation.
9. The performance is different.
For example, the circulating fluid of the closed cooling tower will not produce algae and salt crystals because it has no sunlight and is not in contact with the air, and "no need to remove algae and salt", thus ensuring the high-performance operation of the system; while the circulating fluid of the open cooling tower will not produce algae and salt crystals. Open operation, exposed to sunlight, easy to produce algae and salt crystallization, thus affecting the performance of the system.
10. Environmentally friendly.
Closed cooling towers can be run dry and will not breed various germs, so they are especially suitable for occasions where air purification is required, and are often used in areas where water is scarce and dry; open cooling towers cannot be run dry.
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. Toxic, irritating solutions, there are safety hazards when using open cooling tower operation mode.
To sum up, there are big differences between open cooling towers and closed cooling towers, but 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. !
Global Cooling Tower Supplier
Wuxi Master Cooling Machinery Manufacturing Co., Ltd. is a professional manufacturer of water cooling equipment. Our factory is located in Wuxi national industrial park, and our office center is located in downtown Financial Street. We have convenient transportation and elegant environment with modern industrial plant, advanced technology and equipments.
Our mainly productions are cooling tower, chiller, evaporative condenser, water treatment and other accessory parts. Our products are widely used in electric power, chemical industrial, metallurgy, cooling, light industrial, civil facilities and other fields. Feel free to contact us.
Add : West Side Of C3,Huaping (Wuxi) Intelligent Manufacturing
Park,No.5 Eeifeng Road,Shuofang Town,New District Wuxi City, JiangsuProvince, China
Tel: +86 189 1236 1965
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