g
Velocity Pressure vs. Static Pressure
damper fully open
g O
fx
sx4 cwt °
K
”tv“xvxq“t4 [tp
°
Velocity Pressure vs. Static Pressure
damper partially open
g DC
_p4 cwt up” vt”t t”—
occurs at the expense of velocity pressure. Part of the fan’s usable energy is now being devoted to generating enough static pressure to overcome the resistance of the damper.
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