Wheel blades in axial fan blower is used where precise control of static pressure within supply ducts is required. The fan wheel will spin at a constant RPM . The blades follow the control pitch hub. As the hub moves toward the rotor the blades increase their angle of attack and an increase in flow results. Additional information can be found at the Industrial ACME Fan Company web site http://www.acmefan.net Oleg Tchechel Industrial Mechanical Process Engineer ACME Fan Co. nis@primus.ca http://www.acmefan.net/product.html http://www.acmefan.net/product1.html
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