TRUE PARTNERS NCC Section J FAN EFF. CALC
Ventilation Fan Efficiency Calculator based on NCC Section J
System Static Pressure (pa)
Installation Type
A - Free Inlet and Free Outlet
B - Free Inlet and Ducted Outlet
C - Ducted Inlet and Free Outlet
D - Ducted Inlet and Ducted Outlet
Fan Type
Mixed flow – other
Axial — as a component of an air handling unit or fan coil unit.
Mixed flow — as a component of an air handling unit or fan coil unit.
Centrifugal forward-curved
Centrifugal radial bladed
Centrifugal backward-curved
Selected Fan's Efficiency
Fan Motor Input Power(kW)
A - Free Inlet and Free Outlet
B - Free Inlet and Ducted Outlet
C - Ducted Inlet and Free Outlet
D - Ducted Inlet and Ducted Outlet
Selected Fan's Efficiency
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Calculate