Cooling Water Treatment for Reliable Data Center Operation

Efficient cooling of data centers depends on stable water quality. ProMinent solutions protect open and closed cooling circuits from scale, corrosion, biofilm A biofilm is a film made of different micro-organisms with multiple layers. There are areas of ... more in the glossary, and microbial growth, while ensuring reliable heat transfer and efficient operation.

Cooling Performance Starts with Water Quality

As the power density of racks increases and cooling technology moves ever closer to the heat source, the demands on cooling water quality rise. Deposits, corrosion, and biological growth can impair heat transfer, narrow tight flow channels, and increase the effort and energy consumption required to operate the cooling system.

Controlling Biofilm A biofilm is a film made of different micro-organisms with multiple layers. There are areas of ... more in the glossary, Scale, and Corrosion

Data centers can use open evaporative cooling systems, closed cooling loops, or combinations of both. Each configuration places different demands on water quality, treatment, and monitoring. Open cooling towers are exposed to evaporation, air pollution, and rising salt concentrations. Closed-loop systems also require controlled filling, chemical treatment, and monitoring. The precise dosing of inhibitors, pH-correcting chemicals, and biocides helps maintain reliable operating conditions in both types of systems.

Depending on the water chemistry and operating concept, chlorine, chlorine dioxide Chlorine dioxide is an exceptionally reactive gas, which is not stored due to its instability ... more in the glossary, on-site electrolysis Chlorine and sodium hydroxide are produced in-situ in electrolysis by passing an electric ... more in the glossary, or ozone Significantly less environmentally harmful by-products result from the generation and use of ozone ... more in the glossary can be used for disinfection and biofilm A biofilm is a film made of different micro-organisms with multiple layers. There are areas of ... more in the glossary control.

Continuous Monitoring for Early Intervention

Continuous measurement of parameters such as pH, conductivity, redox potential, disinfectant concentration, turbidity, and corrosion indicators makes deviations visible at an early stage. Linking the measurement data to dosing and blowdown control enables faster responses to deviations and supports stable, resource-efficient operation. This provides the flexibility to react immediately to unforeseen events.

Benefits at a Glance

• Reduced maintenance requirements and less downtime thanks to protection against biofilm A biofilm is a film made of different micro-organisms with multiple layers. There are areas of ... more in the glossary, scale buildup, and corrosion
• Higher energy efficiency through improved heat transfer and cooling performance
• Chemical savings through demand-based dosing and disinfection with continuous measurement of relevant water parameters
• Lower water consumption through controlled concentration cycles