Variable frequency drives (VFDs), also known as variable speed drives (VSDs), are used to modulate the speed of motors in various applications, from hydronic water pumping to VAV fan units to vacuum ...

For many retrofit projects, the use of a VFD seems like a “no brainer.” Drives are now cheaper and more reliable than ever, and the benefits of efficient control of motors can’t be beat. Still, there ...

Any student new to the principles of fluid dynamics will be familiar with Bernoulli’s principle and the Venturi effect, where the speed of a liquid or gas increases when the size of the conduit it ...

Axial flow fans are critical components in many industrial and aerospace applications, where the interplay between aerodynamic performance and acoustic emissions is of paramount importance. Advances ...

This is backed by new, independent research showing that drives make a major contribution in constant flow applications, where they boost efficiency by eliminating the need to oversize equipment or ...

Mixed-flow impeller systems exhaust laboratory workstation fume hoods, prevent reentrainment into the facility and adjacent facilities, and help companies comply with appropriate pollution-control ...