Managing High-Temperature, Grease-Laden Plumes
A commercial kitchen Exhaust Air Unit (EAU) is tasked with extracting highly volatile thermal plumes. These units strictly utilize backward-inclined or airfoil centrifugal impellers. Unlike forward-curved blades, backward-inclined impellers are highly resistant to grease accumulation, preventing severe fan imbalance and catastrophic bearing failure over time.
VFD Integration and Demand Control Ventilation
Modern EAUs are coupled with Variable Frequency Drives (VFDs) and optic/temperature sensors in the hood canopy. This Demand Control Ventilation (DCV) setup dynamically scales the fan RPM based on the real-time cooking load, drastically reducing brake horsepower consumption during non-peak culinary hours.