Controls, variable frequency drives

Hoffman and Lamson's Rigel Controls and Variable Frequency Drives (VFD) optimize the efficiency of new or existing company blower installations and offer an annual 20% savings in energy usage when compared to inlet throttling. Other benefits include SCADA-ready panels, meter-less flow control and pre-engineered design packages. Horsepower consumption is lower with a VFD than with inlet throttling, while both methods provide the same flow and pressure. By lowering only the unit speed with a VFD and not throttling, the blower output decreases, while the optimal efficiency remains the same as it was at full speed.

Hoffman and Lamson
www.hoffmanandlamson.com