H \ L
200
250
300
350
400
450
500
550
600
650
700
750
800
650
0,120
0,150
0,180
0,210
0,240
0,270
0,300
0,330
0,360
0,390
0,420
0,450
0,480
A
L
(m
2
)
0,84
0,75
0,69
0,63
0,58
0,53
0,49
0,45
0,42
0,39
0,36
0,34
0,31
k
p
-3
-3
-2
-2
-2
-2
-1
-1
-1
-1
-1
0
0
k
dB(A)
700
0,130
0,163
0,195
0,228
0,260
0,293
0,325
0,358
0,390
0,423
0,455
0,488
0,520
A
L
(m
2
)
0,81
0,67
0,60
0,54
0,49
0,44
0,40
0,37
0,34
0,30
0,28
0,25
0,23
k
p
-3
-3
-2
-2
-2
-1
-1
-1
-1
-1
0
0
0
k
dB(A)
750
0,140
0,175
0,210
0,245
0,280
0,315
0,350
0,385
0,420
0,455
0,490
0,525
0,560
A
L
(m
2
)
0,78
0,70
0,63
0,57
0,52
0,47
0,43
0,39
0,36
0,33
0,30
0,28
0,25
k
p
-3
-2
-2
-2
-1
-1
-1
-1
-1
0
0
0
0
k
dB(A)
800
0,150
0,188
0,225
0,263
0,300
0,338
0,375
0,413
0,450
0,488
0,525
0,563
0,600
A
L
(m
2
)
0,75
0,67
0,60
0,54
0,49
0,44
0,40
0,37
0,34
0,30
0,28
0,25
0,23
k
p
-3
-2
-2
-2
-1
-1
-1
-1
0
0
0
0
0
k
dB(A)
Technical data
SCFR-GD Table
Key:
L
width in mm
H
height in mm
A
L
free area in m
2
v
eff
effective velocity in relation to the free surface in m/s
ΔP
pressure loss in Pa
L
wA
sound level in dB(A)
k
p
pressure loss correction factor
k
dB(A)
sound-level correction factor
To determine the technical parameters of the dampers we must apply the following expressions (see example):
ΔP = ΔP
diagram
depending on the k
p
indicated in the above table
L
wA
= L
wA
diagram
+ k
dB(A)
indicated in the above table
Correction factors:
k
p
pressure loss factor
k
dB(A)
sound correction factor
L
wA
- dB(A)
damper
= dB(A)
diagram
+ k
dB(A)
Series SF
25
Содержание SCFC-GD
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