Both closed cooling towers and open cooling towers are industrial heat dissipation equipment. However, due to the difference in materials and production processes, the initial purchase price of closed cooling towers is more expensive than that of open cooling towers.
But why is it said that in the long run, it is more economical for companies to use closed cooling towers than open cooling towers?
1. Water saving
The circulating water in the closed cooling tower completely isolates the air, has no evaporation and no consumption, and can automatically switch the operating mode according to the working conditions. In autumn and winter, just turn on the air cooling mode, which not only ensures the cooling effect, but also saves water resources.
The water loss of a closed cooling tower is 0.01%, while the water loss of an open cooling tower is 2%. Taking a 100-ton cooling tower as an example, an open cooling tower wastes 1.9 tons more water per hour than a closed cooling tower. , not only wastes water resources, but also increases corporate expenditure costs. If the machine works for 10 hours a day, it will consume an extra 1.9 tons of water in one hour, which is 19 tons in 10 hours. The current industrial water consumption is about 4 yuan per ton, and an additional 76 yuan in water bills will be needed every day. This is only a 100-ton cooling tower. What if it is a 500-ton or 800-ton cooling tower? You need to pay about 300 more for water every day, which is about 10,000 a month, and 120,000 extra for a year.
Therefore, by using a closed cooling tower, the annual water bill can be reduced by about 120,000.
The open cooling tower only has an air cooling system + fan system, while the closed cooling tower not only has an air cooling + fan system, but also has a spray system. From the perspective of initial performance, open cooling towers save more energy than closed cooling towers.
But closed cooling towers focus on system energy saving. What does that mean? According to statistics, for every 1 mm increase in equipment scale, system energy consumption increases by 30%. The circulating water in the closed cooling tower is completely isolated from the air, does not scale, does not block, and has stable performance, while the circulating water in the open cooling tower is directly connected to the air. Contact, easy to scale and block,
Therefore, generally speaking, closed cooling towers are more energy-saving than open cooling towers!
3. Land conservation
The operation of an open cooling tower requires excavation of a pool, while a closed cooling tower does not require excavation of a pool and occupies a small area, making it very suitable for companies that have requirements for workshop layout.
4. Later maintenance costs
Since the internal circulation of the closed cooling tower is not in contact with the atmosphere, the entire system is not prone to scaling and clogging, has a low failure rate, and does not require frequent shutdowns for maintenance.
The circulating water of the open cooling tower is in direct contact with the atmosphere, which is prone to scaling and blockage, and has a high failure rate. It requires frequent shutdowns for maintenance, which increases maintenance costs and production losses caused by frequent shutdowns.
5. Winter operation conditions
Closed cooling towers can operate as usual if they are replaced with antifreeze in winter without affecting production progress. Open cooling towers can only be shut down temporarily to prevent water from freezing.
Post time: Nov-13-2023