Thread Content
In data center cooling water systems, the chemical treatment method (using corrosion inhibitors for anti-corrosion purposes) is the most commonly used anti-corrosion measure. Why is the chemical treatment method the most commonly used? It has a wide range of applications and can be adapted to systems of various scales: Data center cooling water systems are usually large in scale, and using chemical treatment is convenient; it is not necessary to change the material or structure of the existing equipment, and it can be applied to both open and closed cooling water systems. Cost-effective and stable in performance: A corrosion inhibitor at a concentration of just milligrams per liter is sufficient to form a protective film on metal surfaces, significantly reducing the corrosion rate. Compared to using corrosion-resistant alloy materials or installing electrochemical protection systems, it results in lower overall costs and simpler installation and maintenance. It can address multiple issues simultaneously: Corrosion inhibitors can typically be used in combination with scale inhibitors and biocides, thereby preventing corrosion while also tackling the common problems of scaling and microbial growth in cooling water systems, meeting the comprehensive treatment requirements for data center cooling water. Additional common anti-corrosion measures: In addition to chemical treatment, the following anti-corrosion methods are also used as appropriate depending on the situation: Optimized material selection – by using copper alloys or stainless steel modified with alloying elements, or titanium alloys in high-end applications, as well as applying anti-corrosion coatings, the system’s resistance to corrosion can be improved at its source. Electrochemical protection: Large open-loop circulating cooling water systems make use of the sacrificial anode cathodic protection method to further assist in suppressing corrosion. Water quality pretreatment control: Reverse osmosis softening is used to reduce the concentrations of calcium, magnesium ions and other harmful ions in water, to maintain the pH value within a slightly alkaline range, thereby promoting the formation of a passivation film on metals and reducing factors that cause corrosion.