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Improving Fan System Performance - NREL

TOFENERGYDEPARTMENUENITEDSTATSOFAERICAMI mprovingFan SystemPerformancea sourcebook for Department of EnergyEnergy Efficiency and Renewable EnergyOne of a series ofindustrial energyefficiency sourcebooksa sourcebook for industryBringing you a prosperous future where energy is clean, abundant, reliable, and affordableImprovingFan SystemPerformanceAcknowledgmentsImprovin g Fan System Performance : A Sourcebook for Industryhas been developed by the Departmentof Energy s (DOE) Industrial Technologies Program and the Air Movement and Control AssociationInternational, Inc.

Axial fans, as the name implies, move an airstream along the axis of the fan. The air is pressurized by the aerodynamic lift generated by the fan blades, much like a propeller and an airplane wing. Although they can sometimes be used interchange-ably with centrifugal fans, axial fans are commonly used in “clean air,” low-pressure, high-volume

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