Advantages of Induced Draft Dry Fluid Cooler
- Uniform Air Distribution: The suction effect of the fan tends to pull air evenly across the entire coil surface. This ensures all parts of the heat exchanger are used effectively, maximizing efficiency and preventing “hot spots.”
- Reduced Air Recirculation: The high-velocity discharge helps throw the warm exhaust plume further away from the cold air intakes. This significantly reduces the chance of hot air looping back to the inlet (recirculation), which would lower cooling efficiency.
- Better Performance in Windy Conditions: The negative pressure inside the unit makes the airflow across the coil less susceptible to disruption from crosswinds, leading to more stable operation.
- Good Frost Protection (in cold climates): The fact that the entire coil is under negative pressure and the fan is pulling the coldest air over the coldest part of the coil (the inlet) can help in controlling frost formation in freezing conditions.
- Protected Fan Motor: In many designs, the fan motor is housed within the discharge plenum, offering it some protection from direct exposure to the elements.