1. Air volume is general shown in terms of
- Standard state (Qs) : At 20 0C, 10332 mmH2O, and RH 65%
- Normal state (Qn) : At 0 0C, 10332 mmH2O, and RH 0%
2. Performance table shown the capacity at the standard suction state.
3. Performance table shown the pressure at the static pressure.
4. Volume conversion formula
Q2=
Q1X
P1
P2
x
T2
T1
Q1(m3/min) : Air volume in P1 (mmH2O),T1(0K)
Q2(m3/min) : Air volume in P2 (mmH2O),T1(0K)
5. Pressure conversion formula
For pressure Ps = (
10332+P2
10332+P1
-1 )
x
10332
For vacuum Ps = (
10332+P1
10332+P2
-1 )
x
10332
P1 suction static pressure
P2 dischargr static pressurre
P3 static pressure in catalog
6. Example
Operating specification
Air volume : 8 m3/min
Suction static pressure : -700 mmH2O
Discharge static pressure : +2100 mmH2O
Suction temperature : 30 0C
Calculation : Air volume (8 m3 /min) converts to STP state
Q=8 x
10332-700
10332
x
273+20
273+30
= 7.21 m3/min
Static pressure changed to
Ps =(
10332+2100
10332-700
-1 )
x 10332 = 3003 mmH2O
7. When different model are able to achieve the same air volume, select smaller model is able to save equipment cost, but bigger model has advantages of lower speed and lower noist.
We reserve the right to change the specifications and designs for improvement
without prior notice.