
SELEC TIoN
WH45P
30
/42
rev 20-10
6.4.
Pressure drop and sound level graph Ø 200-560
Example
Ø = Diameter [mm]
Ø = 315 mm
Q = Air flow [m³/h]
Q = 3000 m³/h
V1 = Frontal air speed [m/s]
V1 = 10,7 m/s
ΔP = Pressure drop [Pa]
From graph: ΔP = 37,7 Pa
Lw = Sound level [dB(A)]
From graph: Lw = 56 dB(A)
WH45P
30
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