Fan Pressure Relationship
Static Pressure – Pressure exerted on a wall by the adjacent fluid which is at rest or which is flowing without disturbance along the wall of conduit.
Velocity Pressure– Pressure equivalent of the velocity at which fluid is flowing.
Total Pressure – Pressure of fluid in motion is the total pressure which is algebraic sun of velocity pressure and static pressure.
TP=SP+VP
Fan Total Pressure – Pressure that exists by virtue of compression and the rate motion i.e. the total pressure difference at outlet and inlet of fan.
Fan Velocity Pressure – Pressure corresponding to the average velocity at the specified fan outlet area i.e. Velocity pressure at outlet.
Fan Static Pressure = Fan total pr. – Fan Velocity Pr.
Or =Static pr. at outlet – Total pr. at inlet of fan
Static Pressure Rise =Difference of Static Pr. At outlet and inlet of fan.
Pressure Measurement
Fan static pressure
Static Pressure Profile of the System
Static pressure drop and rise across entire system
