A cooling tower is built to cool down cooling water using the atmosphere. The cooling tower enlarge the surface of the water. The actual cooling is done by the so called evaporation cooling.
An open cooling tower is part of an open cooling water system. The warm cooling water is coming back from the consumer equipment. These are heat exchangers, chillers, jackets of tanks, mould forms or engines, and a lot more cooling systems.
The tower water is pumped through a raiser into the upper part of the tower. As seen on the photo to the left. The water flows to the bottom in the sump of the cooling tower and is pumped back into the cooling system. In this process a part of the water evaporates. This evaportion cools down the water. There all kind of tools and methods used to improve the efficiency of a cooling tower. They use all kind of equipment like fans in induced draft cooling towers, baffle plates or guiding plates inside the cooling tower. All this equipement is used to increase the heat transfer in between the air and water.
Today it is common practice to have cooling tower water treatment. This treatment is not only for the cooling tower, but for the loop and the connected equipmnet consuming the water. The classical way for water treatment are chemicals. Biocide to fight algae, legionella and bacteria, corrosion inhibitors to prevent or fight corrosion or chemiclas against scaling.
In water systems one find despite all the classical chemical water treatment, a lot of limescale, rust, algae or legionella in the cooling water.
Cooling tower water treatment using Merus Ring
In addition to the water treatment of industrial heat exchangers, cooling tower water treatment and their associated loops are our most important applications. The success of the installation is independent of the size or numbers of cooling towers. We achieve excellent results in small, medium and large cooling systems. Even treating a battery of several large cooling towers and the connected loops, our technology works safely and reliably.
Where in classical chemical industrial treatment, biocide against biofilm, corrosion inhibitor against rust and corrosion and what else are needed. As Merus, we are able store all functions in just one Merus Ring.
We install Merus Rings to prevent algae growth,formation of legionella, corrosion and scaling. Especially in warmer areas of the world you have to react fast to prevent biofouling in the whole system – starting with algae in one spot in the cooling tower.
Often the Merus Rings are the only industrial water treatment used, by our customers. Good for larger, complex cooling systems and the connected heat exchangers. On large Merus Ring at the beginning of the cooling tower water treatment, treating all the cooling tower water might be not enough. Merus has to install rings at several strategic right positions in such a system. And yet the Merus Rings are a very cost effective way to treat the cooling tower water.
Saving water in the cooling tower
The consumption of cooling water is affected by three major factors: the actual evaporation and wind drift, the quality of the feeding water and the frequency of blowdown. With the chemical free Merus Ring we have influence on the third factor. As the solubility of salts (also limescale) in the water is increased, more salt is solved in the water, instead of settling in pipes amd machines.
Therefore the cooling system can work with a higher concentration of salt in the water. There are less blow-downs necessary and water is saved. Up to 25% less feed water is needed, depending on the quality of the feed water.
To describe this more technical we can increase the COC in the cooling system using Merus Ring.