Calculating Benefits of VFD Performance

December 2008
Heating/Piping/Air Conditioning Engineering;Dec2008, Vol. 80 Issue 12, p48
The article discusses the ways for calculating variable-frequency drives (VFDs) performance for heating, ventilating and air-conditioning (HVAC) centrifugal fans and pumps in the U.S. There are four primary elements needed in calculating benefits of VFDs performance such as motor horsepower, alternative to VFD control, total hours of annual operation and the cost per kilowatt hour of electricity. Information regarding the computation results and recommendation for VFD management is included.


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