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How Blower Outlet Size Affects Pressure, Velocity and System Losses

Blower outlet size affects the velocity at which air leaves the connection and enters the discharge system. If the downstream passage is too small for the required flow, friction, turbulence, sound and pressure loss can rise quickly. If it is enlarged without a reason, cost and installation space increase without changing the blower’s inherent curve.

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How Blower Inlet Size Affects Airflow and Efficiency

Blower inlet size affects the velocity and pressure loss of air entering the machine. If the actual internal passage is too small for the required flow, the blower may receive less air than expected, generate more inlet noise and operate at a different point from the selection curve.