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from the Instrument Engineering - HVAC department...
Air Damper Actuator Sizing
Engineering and workplace issues. topic
Posted by Willaim Galibut on 2 October, 2000 - 6:19 pm
I am confronted with the problem of sizing an actuator for a butterfly-like type of air damper in HVAC control. Experienced colleagues and vendors just gave me tables to look into, but I am more interested in knowing the theory behind calculating the required torque to operate a damper, given the duct size and shape, the differential pressure across the damper, and the air flow. Does anybody know of any articles or books on this? I'd appreciate very much your replies.


Posted by BA on 20 June, 2001 - 4:30 pm
I would try the website Belimo.com they are the manufacturer of damper actuators and have a nice torque calculator you could use.


Posted by Mike Dawson on 21 June, 2001 - 4:36 am
I have a similar problem of sizing an actuator for a butterfly-like type of air dampe for secondary combustion air to a boiler and I was wondering how you got on?

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