Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Calculated averaged air flow volume rate for all fan speeds based on measurements for 0 Pa
| Air supply | 0 Pa |
|---|---|
| first fan speed | 9 m3/h |
| second fan speed | 16 m3/h |
| third fan speed | 28 m3/h |
| Air exhaust | 0 Pa |
| first fan speed | 8 m3/h |
| second fan speed | 14 m3/h |
| third fan speed | 29 m3/h |
Calculated supply efficiency for the tested working conditions
| Working conditions | Supply efficiency |
|---|---|
| third fan speed at balanced pressures | 64% |
| second fan speed at balanced pressures | 68% |
| first fan speed at balanced pressures | 79% |
| third fan speed at a natural pressure difference | 56% |
| second fan speed at a natural pressure difference | 47% |
Calculated exhaust efficiency for the tested working conditions
| Working conditions | Exhaust efficiency |
|---|---|
| third fan speed at balanced pressures | 73% |
| second fan speed at balanced pressures | 83% |
| first fan speed at balanced pressures | 85% |
| third fan speed at a natural pressure difference | 79% |
| second fan speed at a natural pressure difference | 93% |
Calculated averaged air flow volume rate for all fan speeds based on measurements for 7 Pa
| Air supply | 7 Pa |
|---|---|
| first fan speed | 19 m3/h |
| second fan speed | 22 m3/h |
| third fan speed | 36 m3/h |
| Air exhaust | 7 Pa |
| first fan speed | -8 m3/h |
| second fan speed | 6 m3/h |
| third fan speed | 25 m3/h |
Calculated averaged air flow volume rate for all fan speeds based on measurements for 4 Pa
| Air supply | 4 Pa |
|---|---|
| first fan speed | 14 m3/h |
| second fan speed | 20 m3/h |
| third fan speed | 32 m3/h |
| Air exhaust | 4 Pa |
| first fan speed | 2 m3/h |
| second fan speed | 12 m3/h |
| third fan speed | 27 m3/h |