Variable Frequency Drives (VFDs) significantly enhance energy efficiency in HVAC systems by allowing supply fans to operate at variable speeds to precisely match the building's ventilation or heating/cooling demand. Without a VFD, a supply fan typically runs at a constant speed, delivering a fixed amount of airflow, even when the building's demand is lower. This results in wasted energy, as the fan is consuming power to move more air than necessary. A VFD controls the spee....
Log in to view the answer
