Questions about air coolers
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Some time ago, I heard from friends on a forum that scaling on the air side of air coolers can be quite severe at times. I’m skeptical about this, and I hope those who know more can help answer my question! If scaling occurs, what is its chemical composition? This post was last edited by anship1984 on 2009-2-21 11:04.]
Scaling on the air side of the air cooler can sometimes be quite severe as well. Do you suspect that scaling will not occur?
The air entering the air cooler should be treated; why is scaling so severe? I hope it can be explained!
Based on the placement of the fans, air coolers can generally be divided into two types: suction-type and forced-air type. There is also a type that relies on natural ventilation, but this is rarely used. In suction-type coolers, air enters through the gaps in the supports at the bottom and then rises upward to be extracted by the fans at the top. In forced-air type coolers, the fans are located at the bottom while the tube bundles are situated at a higher position; outside air enters the wind chamber through the fans, passes through the tube bundles, and is then released into the atmosphere. As a result, the air used in air coolers is usually not treated. When the surrounding environment is poor, it is advisable to optimize the design of the tube bundle fins in order to improve the heat transfer efficiency.
Is it the temperature difference that causes condensation, thereby leading to the formation of scale?
In short, it is because the environment in which the air cooler operates is rather dirty; that is, the air entering the equipment is dirty, and dust and other particles accumulate on the outer surfaces of the tubes and fins. This is most evident in areas such as the northeast or northwest, where strong winds carry dust, leading to scaling of the air coolers. Additionally, due to harsh weather conditions, small particles of sand may be blown around, causing damage to the fins as well; therefore, certain requirements must be met regarding both the tubes and fins.
How can scaling occur? It feels like if the connection is covered in dust