Reasons for cooler scaling
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After operating for one and a half years, the circulating water cooler in our facility has developed significant scaling and severe blockages. The main reason is dirty circulating water; are there any other factors?
Please check what the water flow rate is; if it is too low, it can lead to stagnation, microbial corrosion, and adhesion. Another issue is that the water pressure is insufficient, and the water temperature is slightly high. Or the outlet pipeline is not fully filled, resulting in an excess of oxygen in the microenvironment. Wait
There may be several reasons for this: 1. The actual heat transfer capacity of the cooler is higher than the designed value, which results in an excessively high return water temperature and thus scaling. 2. Better treatment of the circulating water is necessary; the amount of scale-inhibiting agents used should be increased, and efforts to eliminate bacteria and algae should be intensified. 3. There is an excessive amount of suspended solids in the circulating water, so enhanced side filtration is required. 4. The piping in the circulating water system can lead to uneven water distribution, with some coolers receiving too much water while others receive too little. This issue can be addressed by adjusting the inlet valves of each cooler; however, it is a complex problem that requires solutions tailored to the specific circumstances
The main reason is water quality issues; if you use groundwater, then the levels of Ca and Mg ions in the water are bound to be high. Moreover, a high temperature of the material medium can severely affect the structure. If the cooling water flows through the tube side, various tubes will become clogged with scale, reducing the heat exchange area ； If the cooling water flows through the shell, scale will form outside the tubes, affecting the heat transfer rate and thus reducing the heat exchange capacity. Suggestion: If there are no strong electric fields in and around the entire cooling water, material pipelines, and equipment, a device similar to an electromagnetic ring can be installed to effectively control scaling. Moreover, it takes up little space and is very useful. Some have been used on boilers.
In most cases, cyk5170 has already covered it; I’ll just add one thing: if your circulating water cooler is used to cool circulating water. So what methods do you use to cool down, and are there any things to keep in mind? If your circulating water coolers use a filler-assisted air induction method, or a forced injection combined with filler-assisted air induction, it is easy to understand why scaling occurs on the fillers due to the vaporization and cooling of the circulating water itself; excessive addition of chemicals will instead increase the likelihood of scaling.
The reasons for severe scaling in heat exchangers are as follows: 1. The flow rate of the cooling water is too low. 2. The calcium and magnesium ion levels in the cooling water are too high, resulting in poor water quality. 3. The insufficient amount of algicide added results in poor algicidal effect. 4. The circulating water temperature is too high.
1. The cooling water flow rate is too low. 2. The calcium and magnesium ion levels in the cooling water are too high, resulting in poor water quality. 3. The insufficient amount of algicide added results in poor algicidal effect. 4. Rust is present in the water causing pipe corrosion. 5. There is sludge and sediment in the water. 6. The pipes are not clean after maintenance