Plenum Fan

Engineers are always concerned and feel the pressure in the Air Handling Unit (AHU) to choose a unit that is small and light and easy to maintain without dropping airflow performance.

Generally, when a housed centrifugal fan is installed in an AHU, it comes with a scroll casing section and transition ductwork connection, which need more space for maintenance. As an outcome, it is heavy and huge.

In commercial spaces, cleanrooms, data centers or some special industries, every inch of space is valuable. A housed centrifugal fan can work here smoothly, but it occupies extra space for its structures.

To solve this problem, the Plenum Fan removes the scrolling housing. A backward-inclined impeller is directly installed in the AHU chamber of this fan. The air can circulate freely in all directions without a volute casing. The AHU chamber is working independently as an air distributor.

What are the benefits you can get from this unit?

- The AHU is small and lightweight by removing the scrolling housing.

- Easy to maintain coil and filter.

- The most beneficial key is that this design is compatible with EC-electronically commutated motors.

The specialty of an EC motor is that when the load decreases, the speed of this fan also decreases automatically. It cut off the cost in part-load conditions, where a fixed-speed fan wastes the electricity.

Plenum Fans have high airflow and moderate air pressure characteristics. Which is suitable for HVAC and AHU systems. It can work in higher temperatures with 75% to 85% peak aerodynamic efficiency. By using EC motors, the efficiency can remain high even in part-load conditions. A non-overloading power curve and low noise capability are very suitable for the following industries. Such as AHU manufacturers, building contractors, OEM equipment designers for commercial HVAC, clean rooms, data center cooling systems, medicine and chemical industries.