An adiabatic cooler combines dry cooling with indirect evaporative pre-cooling, using water spray on inlet air to lower temperature before it contacts heat exchanger tubes. This hybrid technology achieves dry cooler cleanliness while improving efficiency closer to evaporative tower performance.
Operating Principle
Water spray on saturated pads cools incoming air without adding moisture to process fluid, reducing approach temperature by 5-10°F compared to dry coolers. The cooler operates with either a separate or shared water supply. Efficiency ranges from 60-85% compared to evaporative towers depending on ambient humidity levels. Water consumption averages 1-3 gallons per ton-hour, significantly less than traditional cooling towers.
Ideal Applications
Adiabatic coolers serve data centers, industrial facilities, and applications requiring both efficiency and contamination isolation. They perform exceptionally well in dry climates where evaporative cooling becomes ineffective. Installation costs fall between dry coolers and evaporative towers. Maintenance involves periodic pad cleaning and seasonal operation adjustments. These units typically operate 15-18 years with proper maintenance and provide superior performance during high ambient temperature periods.