Fan, blower uses gases to perform the same fuction that pumps do with liquids. Each of these devices transfer mechanical energy from a prime mover into an increase in fluid energy. Fan and blower accomplish this as blades mounted on a rotating shaft rotor move the gas (usually air) within the fluid system. The system’s resistance to flow results in an increase in pressure across the device from inlet to discharge. A fan is designed to operate against a very small pressure rise (up to about 8 in. of water, If the rise is between 8 in. of water and about 1atm, the device is called a blower.
The primary function of a fan and blower are to
- Circular air within a given space.
- Deliver air to or exhaust air from a given space.
- Push air through ducts used in ventilation, heating, or air-conditioning systems.
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