Variable Speed Drives can be installed on Corridor Fan Units, Pumps, and Cooling Towers. Rather than having a motor which is sized up to the nearest larger motor, why not use a motor than can match exactly the load to be driven?
An example of some of the benefits of a Variable Speed Drive on a Corridor Fan:
Comfort remains high and improves in some areas because of reduced high velocity airflow
Odours remain under control as the buildings exhaust system is not starved as it would be if the Fan was on a Night Setback Schedule
Security and Life Safety are maintained as door closers are less affected than if the fan was on a Night Setback Schedule.
Most importantly, significant Savings are realized due to reduced Electrical Consumption and Building Heat Loss.
Variable Speed Drives, when controlled by an Energy Management System, are programmed to run at higher speeds during meal times and at lower speeds at all other times.
In addition to the Variable Speed Drives, Provident provides new High Efficiency Motors matched to the Drives. These motors provide further Savings and do not need to be repaired or replaced for several years.
At 80% Speed a motor uses 50% Energy when on a VSD!