An evaporative condenser combines refrigerant cooling with water evaporation to reject heat directly to the atmosphere in a single unit. Unlike traditional air-cooled condensers, it sprays water over refrigerant coils while air passes through, allowing evaporative cooling to significantly reduce the condensing temperature. This compact design uses 30-50% less energy than conventional systems.
Technical Details
Evaporative condensers operate by circulating cooling water over aluminum or copper tubes containing hot refrigerant gas. As air moves across the wet tubes, water evaporates and absorbs latent heat from the refrigerant, cooling it to within 5-10 degrees Fahrenheit of the wet bulb temperature. The system includes a sump tank, circulation pump, and drift eliminator to minimize water loss.
Applications and Benefits
These units excel in commercial refrigeration, data centers, and industrial cooling applications where space is limited and energy efficiency is critical. They perform especially well in arid climates where evaporative cooling is most effective. Installation requires adequate water supply and periodic maintenance including water treatment and tube cleaning to prevent scale and biological growth.