|xianrun blower centrifugal fan|
1. Air pressure H, which is the energy of per unit volume air from blower. In general,blower air pressure is the difference of full pressure of air outlet and air inlet.
The total pressure equals to the sum of static pressure and dynamic pressure, and the unit is Pa.
2. Air flow Q, the air volume per unit time from blower, the unit is m³/s or m³/h.
3. Power N, during air ventilation, air obtain energy from blower, and blower consumes motor power. The energy that blower deliver to air in unit time is called effective power, the power unit is W.
N=HQ, in this formula, N is the effective power of fan (W), Q is the air volume (m³/s), H is the full pressure(Pa)
|high efficiency xianrun blower|
4.Efficiency E, actually, there is energy loss in blower working, so blower input power is bigger than N.
Nsh=N/E=HQ/E Nsh is shaft power (W), E is blower efficiency. In general, the efficiency of backward curved blower is 0.8~0.9; forward curved blower efficiency is 0.6~0.65