full pressure
Full pressure = static pressure + dynamic pressure
Static pressure outside the machine
Outside static pressure △P=Rm*L(1+k) Pa
Style:
Rm-Frictional resistance loss per unit length of duct, Pa/m;
L-The total length of the air supply pipe of the farthest air supply outlet plus the total length of the return pipe of the farthest air return outlet, m;
k- Ratio of local resistance loss to frictional resistance loss.
When the elbow tee is less, take k=1.0~2.0;
Elbow tee more, take k = 3.0 ~ 5.0
This formula is a simple estimation formula, if you need to optimize the calculation, it is recommended to use the hydrostatic compounding method
Calculations, see Practical Heating and Air Conditioning Design Manual (Second Edition) 11.6.3 P1157 for details.
Static pressure in the machine
Static pressure inside the machine = sum of resistance of each functional section (except fan section)
Functional section air resistance of combined air conditioner (Pa) (when the surface wind speed is 2.5m/s)
The following values are for reference only, specific values are recommended to consult the supplier
Primary filters 50
Intermediate filters 150
High efficiency filter 250
Coil (single row) 30
Chip/microplate anechoic section 60/30
