Smoke extraction damper ERK-SO
TECHNICAL DOCUMENTATION
Legend |
Construction subject to change
No
return
possible
Version:
2017-11-28
|
Page
35
LEGEND
Δ
p
t
[Pa]
=
Pressure
loss
v
stirn
[m/s]
= Intake velocity, blower stream velocity,
outflow
velocity, relative to A
stirn
V
[m³/h] [l/s] = Volumetric flow
L
WA
[dB (A)]
= A-weighted sound power level
L
W
[dB]
= Sound power level / octave
(L
W
= L
WA
+ KF
O
)
B [mm]
=
Width
H [mm]
=
Height
L [mm]
=
Length
FQ
min
[m²]
= Smallest flow cross-section
inside the smoke extraction damper
FQ
K
[m²]
= Duct connection cross-section
ζ
= Resistance coefficient (duct installation)
f
m
[Hz]
= Octave centre frequency
KF
O
[dB]
= Octave correction value
ρ
[kg/m³] =
Density
BS
=
Operating
side
MS
=
Wall
side
