Cooling towers are heat removal devices used to transfer process waste heat to the atmosphere. Cooling towers 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.
This process is usually completed using air strippers. Although any device that promotes contact between air and water strips some volatile compounds, air strippers are usually packed towers operated with countercurrent flow of water and air. Many cooling tower manufacturers will use corrosion proof plastic in these evaporative cooling towers, to ensure that the air strippers last longer. Metal towers do not have the long term corrosion protection advantages for outdoor usage. Using companies that use seamless towers will also ensure this longer lasting quality. These specifications mean that you have very little need for maintenance on your water cooling towers, saving you time and money in the long run.