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Fan laws

Calculates how flow, pressure and power vary with the flow on the same fan and working line.

Fan laws

Case 1 Case 2
Flow q= l/s
Revolutions n= rpm
Pressure p= Pa
Power P= kW


Choose from which cases you want to calculate the different options.


Shows what the different flows between the two different options affect revolutions, pressure rise and the impact on the fan.


Displays what the new speed of the fan is with the modified flow.


Displays what the new pressure from the fan is with the revised flow.


Displays what the new effect on the fan gets to the modified flow.


Revolutions: Revolutions
Pressure: Pressure
Power: Power