Data center free-cooling system components, such as air-to-water heat exchangers, are subject to the possibility of corrosion, which can lead to significant efficiency and availability issues.
Free cooling has become firmly established as a highly effective way to reduce the energy consumed by chillers through the use of outside air or water. Free-cooling systems can save data center owners and operators massive amounts of electricity and money, significantly improving a facility’s overall energy efficiency. However, for a free-cooling system to operate as effectively as possible, its air-to-water heat exchangers must be maintained to a high standard.
Air-cooled heat exchangers, such as condensers, dry coolers, or those used in free-cooling systems, are often exposed to elements, such as pollution and salty air, which can accelerate corrosion. Data center operators should, therefore, address the issue of preventive corrosion protection as soon as possible after installation. Since all cooling and refrigeration components are exposed to certain corrosive processes, depending on specific environmental factors, it is only a matter of time before measurable material changes occur in individual components.