damper actuator selection

[nicolai]

Hi Folks
i am looking for literature on the sizing narrative to select electrical actuator for dampers on industrial ventilation ( torque etc)
are you aware of any reference ?

 

[EnergyProfessional]

The damper manufacturer specifies a minimum torque rating. often they also specify some common actuator models. but based on the torque number, you select the actuator.

If that information is not available, look up a similar damper and add some safety margin. Make sure the damper is well maintained (lubricated and not corroded shut).

 

[danw2]

Be aware of duty cycle for electric actuators. An actuator rated at 25% duty cycle that constantly 'hunts' for a position will break down in short order. Control parameters like deadband can help to limit 'hunting'.