Enhancing Energy Efficiency in HVAC Systems

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A 12 page paper reviewing HVAC operation and discussing the use of variable speed drives (VSDs) and the centrifugal fan with inlet vanes. Either approach can result in energy and cost savings over time, and the type of fan present at the outset can affect the choice of approach to saving energy. It does seem that VSDs represent the future of retrofitting to gain greater efficiencies, but there are some fan types that cannot make use of the VSD. Bibliography lists 9 sources.