Variable Frequency Drives Provide Comfort, Efficiency

Gonzalez, Steven
April 2007
Heating/Piping/Air Conditioning Engineering;Apr2007 Supplement, Vol. 79, p12
The article discusses the role of variable frequency drives (VFD) in providing improved comfort and energy efficiency in buildings. Building owners continue to evaluate their energy use while providing comfort to their occupants. Affinity laws in pumps and fans create a condition where power varies with the cube of the flow. According to the article, installing VFD on current heating ventilation air conditioning systems will reduce 50% of the flow but will only use 12.5% to 18% of full power.


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