The ratio of the electrical input power of a reference fan to the electrical input power of an actual fan at a given duty point (airflow, pressure, and air density), FEI considers motors and drives, not just fans, which makes it consistent with new efficiency metrics for pumps and air compressors.
America can learn important lessons from Australia’s recent and important infrastructure reforms, which were focused on enhancing privatization, deregulation, and improving competition.
The 2015 International Mechanical (IMC) and Building (IBC) Codes provided new and clear guidance for ceiling radiation dampers (CRDs) that affect architects, engineers, specifiers, contractors, and building inspectors.
An in-depth look at induction motors with voltage/frequency controlled variable frequency drives, induction motors with vector-controlled VFDs, and electronically commutated motors.
The topic of motors and motor control techniques is wide and varied. Part one of this two-part article will cover the principles of alternating-current (AC) motor operation and control.