Our closed loop water treatment services include cleaning, passivation, filtration and inhibitor replacement. Maximize system longevity and efficiency with our water treatment solutions for closed tempered, heating, cooling and process water loops.
Water treatment is essential to ensure safe and reliable operation of closed water loops. If left untreated/unmaintained, system energy and water efficiency can become compromised, with risk of corrosion increasing resultant component maintenance and repair costs. Our closed loop water treatment services minimize downtime and component failure for your business to maximize reliability.
Cleaning is an essential part of water treatment programs for closed water loops. Applying to both new and existing water loop piping if improperly cleaned, deposits can form on key heat exchange surfaces, plug control valves. Corrosion control measures can be rendered ineffective with the following contaminants preventing waterside problems from being controlled:
At NCH Asia Pacific, we know that hot water, chilled water, tempered water, process water and glycol filled closed loops are often overlooked when considering a water treatment program. These systems can cause significant corrosion damage if they’re not properly treated, resulting in energy and water inefficiencies, and unwanted costs to your business.
Our closed loop water treatment services combine our technical expertise and innovative product line to recommend tailored treatment and monitoring solutions in any closed water loop. Our team of water treatment specialists are equipped with the expertise to offer thorough and professional water loop cleaning services.
Our closed loop pipe cleaning services enable efficient system operation whilst greatly reducing energy consumption.
Protective corrosion inhibitor films are then formed through passivation, with additional inhibitor products reducing the risk of corrosion. As a result, our water treatment solutions help to energy efficiency and system operational performance to benefit your business.
Reduce your operational, maintenance and repair costs with our closed loop water treatment solutions;
Regular closed loop cleaning, passivation and treatment from NCH can assist in:
Hot water closed loop systems are primarily heated by high efficiency boilers with aluminum heat exchangers. Aluminum heat exchangers, however, cannot tolerate high pH levels that are created from regular closed loop treatment products.
As a result, special corrosion inhibitors must be used to protect and reduce risk of corrosion for both the heat exchangers and metal system components. At NCH, we develop and supply tailored inhibitor products for hot water system treatment to ensure extended component longevity.
Leaking hot water systems increase risk of oxygen pitting corrosion, resulting from ingress of fresh, oxygen containing, water. NCH provides innovative solutions to treat and mitigate oxygen presence in hot water systems that can lead to rapid system damage before leaks are fixed.
Chilled water systems require treatment to prevent corrosion of the metals within the system. As part of effective water treatment solutions, closed loop inhibitors must provide good protection for steel, copper, and any metallic alloys that are in the system. Without appropriate treatment, further corrosion can occur with copper ions resulting in galvanic corrosion of steel components. Our treatment solutions minimize component corrosion to extend chilled water system longevity and reduce frequency of repairs.
Tempered water systems in heat pumps can experience similar issues to heated and chilled water systems, with heat exchangers and piping exposed to risk of corrosion depending on whether the systems are in heating or cooling mode. Our water treatment solutions maximize efficiency and longevity of tempered/heat pump closed water loops.
Process water open and closed systems often have the same treatment requirements and potential problems as chilled and hot water systems.
Some process water systems have small cooling water channels, meaning filtration becomes critical to performance. Point-of-use filters on incoming cooling water to each machine in addition to system-wide side stream filters are often required to maintain the suspended solids at an acceptable level in the cooling water. These systems often have dead legs causing significant problems.
Glycol solutions are frequently used to fill closed loop systems. Uninhibited glycol is extremely corrosive, however, to system metals. As a result, glycol fluids must be inhibited with appropriate corrosion inhibitors to limit and mitigate system component damage.
NCH Asia Pacific recommends that only inhibited glycol fluids be used in these systems. Trying to treat uninhibited glycol with conventional closed loop inhibitors will not provide adequate protection from corrosion in these systems.
The glycol must be maintained at the appropriate level (usually 25-30% of the fluid) to provide adequate protection from corrosion and freezing. Special glycol feeders must be used to add fluid to the system when needed. Low glycol levels can allow microbiological growth and corrosion that can quickly cause damage to the system.
To discuss your water treatment solutions for closed water loops, contact our expert team for industry-leading advice.
Backed with over 100 years of industry expertise and excellence, NCH Closed Loop Water Treatment solutions offer the best choice for your water system maintenance. The combination of our advanced technology, innovative products, and solutions enables us to maximize your system reliability, accuracy, and safety.
Contact NCH today about creating a custom water treatment program for your business’ closed water loops. Our team of NCH experts are always happy to help.
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