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Affinity Laws
Affinity Laws
Q ∝ r, H ∝ r², P ∝ r³ (r = n₂/n₁ or D₂/D₁)
Input Parameters
Flow Q
m³/h
Head H
m
Power P
kW
Scaling basis
Initial speed n1
r/min
New speed n2
r/min
Initial diameter D1
mm
New diameter D2
mm
Calculate
Reset
Results
Scale ratio
—
New flow
—
m³/h
New head
—
m
New power
—
kW
Engineering estimate.