Performance of wet surface air coolers

The performance of wet surface air coolers will degrade over time for several reasons:

1. Scaling and clogging problems

Water quality impact

Water is the key medium for wet surface air coolers. If the circulating water used is of poor quality and contains a lot of minerals, microorganisms or impurities, these substances will be deposited on the wet surface and internal pipes over time. For example, calcium, magnesium and other ions in the water may form scale, which has poor thermal conductivity and forms an insulating layer on the wet surface, hindering heat exchange. In addition, microorganisms in the water may breed and form biofilms, which will also reduce the efficiency of heat exchange.

Air carries impurities

The air flowing through the cooler may also carry impurities such as dust and fibers. These impurities will gradually accumulate on wet surfaces, fins or air channels, blocking the path of air circulation. When air flow is blocked, the contact between air and water will be uneven, the heat exchange efficiency will be reduced, and the performance of the cooler will be reduced.

2. Component aging and wear

Material aging

Components such as the housing, filler and internal pipes of wet surface air coolers will age over time. For example, the plastic housing may age and become brittle due to long-term exposure to sunlight or chemical erosion, resulting in reduced sealing. The filler may deform and break after long-term use, affecting the distribution of water and the contact effect between air and water.

Wear of mechanical parts

Mechanical parts such as fans and water pumps in the cooler will wear out during long-term operation. Wear of the fan impeller will lead to reduced air volume and insufficient air pressure, so that the air cannot pass through the wet surface at a suitable flow rate. Wear of the water pump impeller or aging of the seal will cause unstable or reduced water flow, affecting the spraying and circulation of water, thereby reducing cooling performance.

3. Corrosion problem

Chemical corrosion

Due to the complex working environment of the cooler, it may be subject to chemical corrosion. If there are acidic or alkaline gases in the air, or corrosive substances in the circulating water, it will cause corrosion to the metal parts of the cooler, such as pipes and fins. Corrosion will destroy the surface structure of the parts, reduce the effective heat exchange area, and may cause leakage and other problems, which will seriously affect the performance of the cooler.

In conclusion, the performance degradation of wet surface air coolers over time is the result of a combination of factors. If you want to know why the performance of wet surface air coolers degrades over time, you can pay attention to www.bxfintube.com !