When a cooling tower is not cleaned properly, bacteria and algae will proliferate and grow in the water. These microorganisms can cause corrosion, scale, fouling and decrease the system’s efficiency.
To prevent these problems, treat the cooling Towerautomatic cleaning water regularly and conduct annual cleanings. Treatment will also help keep your system from running into issues of pH imbalances, which can lead to corrosion, pitting and etching.
Air Inlet Screens
Air Inlet Screens help keep debris out of the intakes of a variety of tower equipment, helping to reduce preventative plant maintenance (PPM) and prolong the life of internal filters. They can be custom-designed to fit any opening and can be used for applications including dry air coolers, chillers, air handling units and louvres.
The filters are made from durable, washable, synthetic fabric media that draws in and traps airborne particulates. They can be fitted easily to the external air intake of a wide range of equipment and come in either electrostatic polypropylene or heavy duty PVC coated polyester high abrasion media.
Typically installed to the external air intake of a condenser, air-cooled chiller or dry air cooler, they reduce fouling in equipment by up to 70 percent and can extend the life of HVAC internal air filters. They can also help to prevent algae growth in cooling towers. The screens are easy to clean and can be removed quickly to allow inspection and repair.
Air Inlet Nozzles
Air Inlet Nozzles are a common component of tower automatic cleaning. They are used for blowing off liquid and debris and cooling or drying parts.
These nozzles connect to a hose and are available in several sizes, including 1/2′′. Some of these nozzles also have copper tubes attached to them to aim the direction of the flow.
They are a low-cost solution for light blow-off applications. They also help reduce compressed air costs because they require less compressed air than open pipes and can be used to replace existing piping.
They are designed to amplify air using the Coanda effect, which entrains surrounding air and accelerates it into a concentrated, high-velocity flow stream of amplified air. This allows for 25 times more air than is required at a lower energy consumption and operating cost.
Hot Deck Nozzles
Cooling towers use water to cool industrial equipment that is being operated in a manufacturing plant or other facility. In order to do this, the warm water is pumped from the heat source and distributed through a number of nozzles over the wet deck of the cooling tower.
This increases the surface area of the wet deck and increases the contact time between the air and the water, enhancing evaporation. During the evaporation process, a small portion of the water is removed from the cooling tower and returned to the heat source for reuse.
This type of system is typically used in crossflow cooling towers that use gravity-flow distribution basins. These systems have a number of spray nozzles in each basin floor to distribute the water over the tower fill. The nozzles are sized and located to provide a uniform pattern of water over the fill media with no gaps between their spray areas, ensuring full coverage for the entire tower.
Collection Basin Nozzles
The water sprayed through the spray nozzles moves around the tower basin creating a hydraulic sweep which pushes the pollutants, debris and sediment that collects on the floor of the tower cold water basin to the’sweeper outlet’ where it enters the filtration system before being delivered back into the cooling tower.
Suspended solids such as dirt, silt, sand and particulate matter build up on heat transfer surfaces, fill, spray nozzles and basins in the cooling tower system, causing loss of heat exchange efficiency and equipment life. This leads to higher maintenance costs and reduces the lifespan of the equipment.
Biological activity (algae, slime, biofilms and legionella) also collects in the cooling tower water resulting in fouling of heat transfer equipment and corrosion in all parts of the system. This creates health hazards for those in the building. Disinfecting the cooling tower prevents this from occurring, reducing health risks and helping to improve the overall efficiency of the system
