Methods and principles of cooling tower maintenance

What is a cooling tower?

A cooling tower is a type of heat exchange equipment, which happens to be one of the most widely used and common equipment in the field of air conditioning and even industries. The task of the cooling tower is to reduce the temperature of the water and any fluid that has a high heat capacity (fluids such as oil, acid, etc., which are used in closed circuit cooling towers in industries.)
Cooling towers are one of the most important types of equipment in air conditioning systems, which have different divisions based on the type of operation. This equipment is used in industries such as refineries, petrochemicals, power plants, etc. in very high capacities.
Regular care and maintenance are among the things that increase the life, efficiency, and efficiency of cooling towers. Also, the maintenance of cooling towers in winter for units that are used in cold regions has principles that must be followed. The effectiveness and efficiency of cooling towers and chillers will depend a lot on how they work.
Failure to comply with the basic points in the maintenance of cooling towers will cause a decrease in their efficiency and effectiveness. Reduction of efficiency in cooling towers will disrupt the operation of the condenser and other devices and as a result, increase the temperature of cold water, also reducing the efficiency of cooling towers used in the industry will reduce the efficiency and even the quality of production. If the cooling towers are used to cool the condenser water of water chillers, the reduction of its efficiency will cause problems in the performance of the chiller in terms of providing cooling in the project.

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Cooling tower components

• body
• Internal and underlying skeleton or structure
• gearbox
• Fan stack
• fan or propeller
• nozzle
• Coil
• Round reduction system
• Electro-Motor
• Tori fan guard
• Water distribution mat
• Packings or heat exchange surfaces
• Air intake valve (louver)
• Eliminator
• Water distribution and sprinkler system
• Compensation water filling float
• Drain flange and drain valve
• Inlet and outlet flange
• Suction pump garbage filter
• Air intake filter
• Access Panel
• pond

Principles of cooling tower maintenance

• The internal parts should be periodically visited and each of the internal components of the cooling tower should be checked.
• Wash internal parts including packings, nozzles, and water storage pan.
• Equipping the compensatory water path of the tower (make-up) with one of the types of magnetic or resin or electronic hardeners and...
• Adjust the fan blades and check the performance of the propeller (good suction and no vibration).
• Empty the garbage net in the pan regularly.
• If there is a hardening resin installed in the compensating water circuit, it should be regenerated.
• The amount of solutes in the pan and its reduction should be controlled by adjusting the water filter and circulating water.
• Check the water level in the water pan and if the water level decreases, check the floating water level and temporarily cut off the water supply.
• The piping system should be checked regularly to prevent leaks and further damage.
• Replace the filters of the water purifier in the floating water circuit.
• Check the temperature of the motor, the amperage it consumes and compares it with the amperage specified on the device.
• The flow of drainage or beludan should be checked manually or automatically.
• When the cooling tower is shut down and in cold seasons, the water in the pan should be drained.
• To be regularly and periodically serviced by the experts of the manufacturing company during the after-sales service period.

Important points in cooling tower maintenance

• Periodic control and inspection will increase the life of internal parts.
• The correct operation of the internal parts increases the working efficiency of the cooling tower.
• The correct operation of the water spraying system and the aeration system reduces the amount of water and electricity consumption.
• Basic maintenance of the device will reduce the costs of replacing internal parts.
• Periodic washing of internal parts such as packing will reduce the costs of replacing filters of the purification device.

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Cooling tower maintenance in winter

If cooling towers are used in cold areas or units that operate in winter and are used in humid and below zero degrees environments for 24 hours, they will suffer permanent freezing. In the meantime, it should be noted that the cooling towers that are going to be used in winter, based on the climate and weather conditions, must necessarily be equipped with a water heating element in the tower pan. The importance of the heating element, especially in closed circuit cooling towers, is much more important even for the operation of the tower.

Cooling towers are designed and built based on summer heat conditions, so choosing them to operate in winter is much more than their required capacity. But according to this issue, cooling towers are used well at very low temperatures all over the world, so the following points should be considered in their use.

1. Never run cooling towers without a thermal load because without a thermal load the water will freeze quickly.
2. If the water temperature is very low and it is necessary to use the bypass to raise the water temperature, hot water should be directly entered into the cooling tower pan to prevent the water from freezing using the bypass.
3. Do not reduce the amount of discharge water during winter to maintain the cooling towers and always distribute it within the normal range on the packings. If the distribution of water on the packings is low, the water will quickly lose its temperature and the cooling tower will freeze.
4. Finally, to maintain and prevent the freezing of the cooling tower in winter (if the cooling system is not active), the water in the cooling tower can be drained and practically removed from the circuit.

You can also read article CHILLER OF COOLING TOWER more information.

Final speech

The specialized collection (Damatajhiz) (the first and most reliable authority in the country in the field of building facilities equipment and all air conditioning devices), offers you all kinds of sand filters and hundreds of other products, guaranteeing the originality of the product, valid warranty, and reasonable price. In addition, if you have any questions about choosing and comparing the brands of this product, you can get free advice from the heating equipment experts.

In Iran, the first and most famous specialized group in the field of building installation equipment, air conditioners, and all equipment for swimming pools, saunas, and jacuzzis since 2004, DamaTajhiz is a specialized group. Refer to the time of this group. For more information, you can get advice from the experts of DamaTajhiz Engineering and Production Company by calling 021-88822550.

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