24V DC Cooling Fan fan working pressure

(1) Under the "24V DC Cooling Fan" standard state, the fan rated pressure range p? 98Pa (10 mmH2O). This fan is not the case, also known as the Freedom fan, commonly used in the ventilation of the building.
(2) Under the "24V DC Cooling Fan" fan design conditions, the fan rated pressure range of 98Pa? MmH2O). p? 14710Pa (1500 generally refers to the fan blower, the blower is also discussed in this chapter. ventilator fans are the most widely used air pollution control, ventilation, air conditioning and other projects they use such fan.
(3) "24V DC Cooling Fan" blower operating pressure range of 14710Pa? P? 196120Pa. High pressure, is commonly used in wastewater treatment aeration equipment.
(4) working pressure range of the compressor