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Smoke Control Damper
Tab. 3.2.1. Weights and effective area cross section
Number
Size AxB
Weight [kg]
of blades
1100x200
1
x250
2
x300
2
x350
2
x400
2
x450
3
x500
3
x600
3
x700
4
x800
4
x900
5
x1000
5
x1100
6
x1200
6
Example, how to calculate effective area and size of SDJR-S damper [AxB], when knowing air volume in [m³/s] or [m³/h] on damper. Maximum
allowed air velocity on SDJR-S is 12 [m/s].
Formula:
Sef = Q / v
Q ... air volume [m³/s]
Sef ... effective free area of damper [m²] v ... air velocity on damper [m/s]
Example:
Air volume needed is 26000 m³/h
26000 / 3600 = 7,222 m³/s
7,222 / 12 = 0,602 m² is min. effective free area [Sef]
Find the value Sef in the table 3.2.1. The effective are has to be the same or bigger. There will be more options of damper, sizes AxB.
Actuating
Sef [m
]
2
Mechanism
29.1
0.1505
BEN
34.0
0.1791
BEN
35.9
0.2321
BEN
37.9
0.2851
BEN
39.9
0.3381
BEN
47.2
0.3668
BEE
49.2
0.4198
BEE
53.2
0.5258
BEE
59.9
0.6074
BE
63.8
0.7134
BE
70.5
0.7950
BE
74.5
0.9010
BE
81.1
0.9826
BE
85.1
1.0886
BE
Lindab reserves the right to make changes without prior notice
Last modified: 2021-09-03
l in d a b | we s i mp l if y con s t r uct i on
Number
Size AxB
of blades
1200x200
1
x250
2
x300
2
x350
2
x400
2
x450
3
x500
3
x600
3
x700
4
x800
4
x900
5
x1000
5
x1100
6
x1200
6
Rev: 2021-03-26
SDJR-S
Weight
Actuating
Sef [m
]
2
[kg]
Mechanism
30.8
0.1647
BEN
35.9
0.1960
BEN
38.0
0.2540
BEN
40.1
0.3120
BEN
42.2
0.3700
BEN
49.8
0.4014
BEE
51.9
0.4594
BEE
56.1
0.5754
63.2
0.6647
67.4
0.7807
74.5
0.8700
78.7
0.9860
85.8
1.0753
90.0
1.1913
BE
BE
BE
BE
BE
BE
BE
15
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