Axial fans

Technology
AC axial
K series
AC axial
S series
AC axial fans
General
information
Curve
Influence of impeller diameter D
A change in impeller diameter influences:
– Air flow V
V ~ D 3
– Static pressure increase Δp fa
Δp fa ~ D 2
– Requirement of energy P 1
[%]
60 80 100 120 140 160
0.8D
0.9D
D
1.1D
1.2D
1.3D
AC axial
A series
EC axial fans
P 1 ~ D 5
40
0.7D
0.6D
20
0
0
20 40 60 80 100 120
140
EC axial
S series
[%]
Q-motor
ESM
EC-SYSTEMS
Accessories
Curve
Influence of width of air discharge b (only for centrifugal impellers)
[%]
160
A change in width of the air discharge influences, in approximation:
– Air flow V
V ~ b
100 120 140
– Static pressure increase Δp fa
Δp fa = const
– Requirement of energy P 1
P 1 ~ b
20
40 60 80
0.7b 0.9b 1.1b 1.3b
0.6b 0.8b b 1.2b 1.4b
0
0
20 40 60 80 100 120
140
[%]
409
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