Cooling Tower
Cooling water is used in HVAC systems and different industrial applications for cooling purposes. The tower features coolant like falling water, which absorbs the heat that enters the tower from the sides. Some portion of the water evaporates during heat transfer. This evaporated water flows out of the cooling tower in the form of mist. The cooled water that remains behind gets collected at the bottom of the tower. This water is pumped for reusing in the industry or plant.
Chemicals for cooling towers and HVAC systems not only ensure good water quality but also keep the towers clean and increase their functional efficiency. This helps prevent algal and bacterial growth, foul smell, corrosion of the walls and lining, and more. This largely depends on the types of chemicals you choose as some of them are biocides, while others are bicarbonates or corrosion inhibitors. You can opt for these chemicals in the form of liquid as well as tablet depending on your requirement.
The water flows through the cooling tower at controlled speed for maximum possible exposure to air. The air exchange allows absorption of heat from the sides. Some portion of the water evaporates during heat transfer. This evaporated water flows out of the cooling tower in the form of mist. The cooled water that remains behind gets collected at the bottom of the tower. This water is pumped back for reuse in the industry or plant.
The following are the most commonly utilized chemicals in cooling tower water treatment:
1: Scale and corrosion inhibitors - These compounds are used to decrease or eliminate pollutants in your water supply, such as minerals, which can cause clogs and deterioration in your pipe system. Bicarbonates are the most frequent corrosion inhibitors. By neutralizing acidity in the water, these compounds protect metal components. Bicarbonates directly combat corrosive substances like chlorides and sulfate, which eat away at the structure and components of a cooling tower over time.
2: Treatments for closed-loop systems - Issues like oxygen pitting are typical in closed-loop systems. To avoid this type of corrosion, a variety of substances can be utilized.
3: Biocides - are chemicals that are used to prevent the growth of potentially hazardous microorganisms. These can help to remove any remaining living matter in a cooling tower, enhancing the system and ensuring clean and effective water utilization. When it comes to water biocides, bromine is one of the most popular options.
4: Organic dispersants - These water treatment chemicals for cooling towers can be used to avoid fouling and biofilm formation.
5: Chlorine dioxide - This chemical can be used as a disinfectant to kill bacteria and stop them from growing again.