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VARIABLE INLET VANE DAMPERS

 

  • VIV dampers are often used for capacity modulation. They give accurate modulation and power savings over other styles of dampers at reduced air flow.

  • For every inlet vane position there is different capacity v/s static pressure curve and capacity v/s brake horsepower curve generated by the blower.

  • When an inlet vane is partially closed, each blade directs the air into the impeller in the direction of rotation and so the air is prespun. This brings about a reduction in the capacity, static pressure and BHP. The amount of BHP savings at reduced capacity is determined by the type of system and type of blower-vane combination.

  • Inlet guide vanes are synchronously adjustable in the same angular position by a connecting element.

  • Adjustment can be made either automatically via an adjusting element by pneumatic / electrical or hand.

 

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