g
| surge |
|
|
|
1 hp | line | 2 hp | 3 hp |
|
[0.75 kW] |
| [1.5 kW] | [2.2 kW] |
|
|
|
|
| actual system |
pressure |
|
| $ | resistance curve |
|
|
|
| |
static |
|
| % |
|
|
|
|
| |
| airflow |
| g GF | |
|
|
|
| |
[— |
|
|
p“ | e/ | f/4 K |
time, the fan’s input power requirement would also rise, possibly overloading the motor. Consequently, the FC fan is referred to as an “overloading” type of fan.
As with all fan types, the FC fan can exhibit unstable operation, or surge. However, since FC fans are used typically in low speed and low
Backward Inclined Fan
g GG
f
The second centrifugal fan design has blades that are slanted away from the
direction of wheel rotation. These, or BI, fans operate at higher speeds than FC fans.
96 | caQ3caM6793O[ |
