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What type of cooling system does your company use? Oil refineries, manufacturing plants and power stations all need cooling towers. These towers are also commonly attached to large rooftop HVAC units. The cooling tower should be maintained regularly to ensure its reliability and prevent certain pathogens growing in the cooling tower.

Counterflow Cooling Towers
In counter flow cooling towers, the water and air enter the tower at opposite ends. This type of cooling tower has the water entering from the top, and the cooling air entering from the bottom. They are smaller than crossflow cooling towers, as they don’t use a gravity-fed system. They use pressurized sprays nozzles instead to evenly distribute the water across splash fills. They are less likely to freeze than other cooling towers but require large pumps to move water.

Crossflow Cooling Towers
The name Crossflow Cooling Towers comes from the flow of air which is perpendicular to the water and transfers heat from water to air. Gravity-fed systems are also used in these towers to send hot water down the tower, where it’s cooled. They are taller than other tower types because of their design. Crossflow towers are expensive to purchase, but they require less maintenance and smaller pumps because of their gravity-fed design. The air tubes of these towers can become clogged and are susceptible to freezing in dusty or dry areas.

Forced draft cooling towers
Fans are used to move the air across water in forced draft cooling towers. These fans are usually located on the intake side of the cooling tower to force air into the tower. They are usually recommended for indoor usage because they can handle high pressures well. They can be expensive to run, and are susceptible to air recirculation because of air friction in the tower.

Hyperbolic Cooling Towers or Natural Draft Cooling Towers
Natural draft cooling towers don’t use any mechanical devices to pull air through the tower. The cooler air from the outside flows into the tower and forces the hotter, moist air out of the top. These towers are highly efficient and cost effective.

Induced draft cooling towers
The fans used in induced draft cooling towers are similar those of forced draft cooling systems. The fans are on the air-outlet side of an induced cooling system. They pull air into the tower, and then send it out at high speed. This prevents warm air from recirculating within the tower.

Cooling Tower Maintenance and Design with Veda Cooling TowersVeda Cooling Towers provides innovative cooling tower design for a wide range of applications, as well as maintenance and retrofit services.