Closed-Loop Water Conditioning
Closed Cycle and Closed Loop Heating and Cooling
Liberta Kimya is a water treatment company that offers a full range of specialized services for management of the closed systems, closed loop heating, cooling and closed loop chilled water systems.
Our Closed-Loop Water treatment solutions address any problem related to corrosion, contamination, bio-fouling and scaling that affect reliability and performance of the closed loop and Closed-Loop Water systems.
Our specialized services for the Closed-Loop Water systems are provided by the field experts, who combine the latest high-performance Closed-Loop Water treatment techniques to help reduce costs, save energy, increase the operational efficiency and reliability, and extend the asset lifecycles.
On-site closed loop and Closed-Loop Water treatment, engineering support and maintenance services to control corrosion, contamination, microbial contamination and scaling.
State-of-the-art water analysis equipment to monitor and verify Closed-Loop Water treatment program performance.
What are the closed system water circuits?
The closed systems, closed loops or Closed-Loop Water systems are used in many commercial, industrial and process environments, where they provide to the working areas and other indoor environments, manufacturing and industrial processes with heating or cooling services.
The closed loops operate as a "closed loop" or "closed system", namely they are effectively sealed and the water in the system is not exposed to the atmosphere. This means that a closed loop system contains a fixed volume of water that circulates and is possibly expose only to any negligible water losses.
Problems affecting closed loop systems
If closed loop systems or the water used in these systems are not maintained or treated, this can cause problems that affect energy use, cost, asset performance and reliability. Specifically, these problems include corrosion, contamination, bio-fouling and, to a lesser extent, scaling, as long as there is no significant water loss, which requires additional make-up water.
To overcome such problems, the closed loop systems and the water used in these systems require a proper treatment.
Successful water treatment in the closed loop systems
Successful management of the closed loop systems requires a holistic approach for maintenance and protection of the system, its components and the water used in them against the harmful effects of corrosion, contamination, bio-fouling and scaling.
A well-managed waste system has significant benefits and it will help to optimize the costs and operational efficiency, reduce the downtime, save water and energy, maintain the steam quality, and increase the plant reliability and safety.
The holistic approach of Liberta Kimya Services for successful management of the Closed-Loop Water systems includes the following controls:
Proper control measures to minimize system corrosion.
To control contamination in the system to reduce any blockages, increase the heat transfer efficiency and maintain the flow rates.
To control bio-fouling arisen from microbial slimes, pseudomonas bacteria, nitrification and sulfate reducing bacteria.
Scaling in the closed loops generally creates a less problem, but can be problematic where a substantial compensation volume is required.
Prevention of corrosion in the Closed-Loop Water systems:
Although the oxygen levels tend to be lower in such fixed volume water systems, corrosion can affect the closed loop heating, cooling and chilled water systems. However, it is more common in the heating systems, where higher fluctuating temperatures can increase the corrosion rates.
If it is not controlled, corrosion can lead to deterioration of the metal components and increased contamination arisen from the corrosion by-products. This can reduce the flow rates, cause blockages, and reduce reliability and life expectancy. It can also reduce the heat transfer efficiencies, which increase the energy costs.
A complete understanding on the system metallurgy is essential in development of an effective corrosion control program. Several different metals are commonly used in the closed loop systems, and care must be taken to ensure that any chosen chemical water treatment product is compatible. This is true especially for systems containing aluminum.
Chemical corrosion control can be achieved by incorporating the specialized Closed-Loop Water treatment technologies into the water treatment program, including the high performance corrosion inhibitors and oxygen scavengers.
Control of contamination and microbial slime in the closed loops
The Closed-Loop Water systems can be contaminated by sources such as suspended solids, corrosion by-products, scaling and accumulation of microbial slime from pseudomonas bacteria, nitrification and sulfate-reducing bacteria.
Accumulation of such deposits in the form of sludge and suspended solids can cause blockages, reduction of the heat transfer efficiencies and reduction of the flow rates. It can also cause any local corrosion and bioaccumulation.
Pseudomonas bacteria can cause any significant microbial contamination problems in the closed cooling and chilled water systems. As pseudomonas bacteria reproduces in such closed loop systems, thick microbial sludge can build up to contaminate the water, reduce the cooling efficiency and increase the operating costs.
Successful treatment of the Closed-Loop Water systems operating below around 80oC must contain a broad range of biocides to control growth and build-up of bacteria and microbial sludge within the closed system.
Control of Scale formation:
Scale formation (sometimes called limescale) in the closed loops and closed loop systems tends to a less problem due to the constant water volumes. However, if there are regular water losses that require a substantial compensation, then treatment may be required for scale formation.
Since the increased system temperatures make hardness salts more insoluble, this is often a problem in heating systems and especially the systems, which use hard water. Scale build-up on the interior surfaces can cause blockages, reduce the heat transfer efficiencies and reduce the flow rates.