Cooling towers are heat removal devices used to transfer process waste heat to the atmosphere.
Cooling towers are heat removal devices used to transfer process waste heat to the atmosphere, and they may either use the evaporation of water to remove process heat and cool the working fluid to near the wet-bulb air temperature or, in the case of closed circuit dry cooling towers, rely solely on air to cool the working fluid to near the dry-bulb air temperature.
Common applications include cooling the circulating water used in oil refineries, petrochemical and other chemical plants, thermal power stations and HVAC systems for cooling buildings.
The main types of cooling towers are natural draft and induced draft cooling towers (The classification is based on the type of air induction into the tower).
HVAC (heating, ventilation, and air conditioning)
HVAC (heating, ventilation, and air conditioning) is important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors.
Why is it important to regularly service cooling towers?
A factor that may interrupt heat exchange
Water treatment programs
Most water treatment companies use test kits and chemical dispensing systems which have made the use of water treatment chemicals in chiller, boiler and cooling-tower systems much easier. But attention to details, such as how often systems are tested, is critical to system performance. The correct water treatment chemistry at the correct time is extraordinarily important because even minor problems can create major costs.
The Manchem difference
ManChem also supplies equipment needed for the biocides, inhibitors and antiscalants used in the cooling towers.
How does poor or no service affect cooling towers, chillers or boilers?
Poor water treatment lets water interact with the surfaces of pipes and vessels which contain it. Steam boilers can scale up or corrode and these deposits will mean more fuel is needed to heat the same amount of water. Cooling towers can scale up and corrode, but left untreated, the warm, dirty water they can contain, will encourage bacteria to grow, and Legionnaires’ Disease can be the fatal consequence. The condenser tubes within a chiller and other water cooling equipment can also scale up and corrode thus preventing good heat transfer. Increased energy consumption and poor cooling performance is the common result in inefficient water treatment.
Water treatment can often be categorized as ‘low-tech’ and unglamorous. However, the right chemicals, proper chemical feed equipment, and a dedicated service provider is essential to your mechanical equipment and should be ‘treated’ with top priority.
- Monitoring of the various systems, to ascertain that the respective chemistries adhere to the set parameters.
- Equipment inspection, to ensure correct functioning and operation.
- Bi-annual Legionella sampling of the cooling tower and make-up (optional as selected by customer).
- Manchem will keep, provide and maintain an adequate stock of all the chemicals required to perform the Services.