torque requirement for damper
torque requirement for damper
(OP)
We use a motor to open or close dampers on a hvac type unit. Various manufacturers of dampers publish values of torque requirements in lb-in per square foot of damper area. These values are based on Face velocity (fpm)and static pressure (in.wc).
How would you determine the torque requirement if the dampers are opened or closed when there is no fan running, that is, there is no face velocity or static pressure when the motor is used.
How would you determine the torque requirement if the dampers are opened or closed when there is no fan running, that is, there is no face velocity or static pressure when the motor is used.





RE: torque requirement for damper
RE: torque requirement for damper
RE: torque requirement for damper
RE: torque requirement for damper
Well . . .
If you have the face velocity vs. torque curve graph look at the line where the velocity is zero.