if you need large quantity up to 1000 cfm of air at low pressure [ range in few centimeters of water column] the only choice is to buy an an axial blower, here air flows parallel to the axis of the rotating drum or hub. It has two set of aerofoil blades one set being fixed on casing called "stator blades" and the other blade row being fixed on the rotating drum called rotor blades. It has several stages <>.

The enthalpy and pressure of air increases as it passes through the rotating blades. the velocity of air is increased by rotating the rotating blade rotor by an electric motor. When air enters divergent end of aerofoil blades pressure increases. Fixed blades guides the air to flow to the next stage of rotating more. . .

Fans utilize power from a motor to generate a volumetric flow of air at a given pressure, and are considered low-pressure air pumps more often than not. A propeller converts torque (turning force) from the motor (typically permanent split capacitor AC induction motors or brushless DC) to increase static pressure across the fan rotor and to increase the kinetic energy of the air particles.

Fans are classified into propeller, tube axial and vane axial styles, and each type has different characteristics. Propeller fans consist of only a motor and propeller and thereforemore. . .

Industrial blowers are mainly used to circulate the movement of air and gas in ventilation applications. Their main function is to replace impure or contaminated air with fresh air by swirling it around. Almost every industry, including agricultural, chemical, medical, oil and gas, automotive, food processing, mining and construction use blowers for different purposes such as drying, reducing heat levels, reducing smoke and odors, processing and controlling gaseous fumes.

Industrial blowers are manufactured using a range of durable plastics and metals, or a combination of both materials. For example, industrial blowers operating in corrosive environments are usually made of polypropylene because it provides greater structural integrity and corrosion resistance, and will never de-laminate. Typical recommendations in the construction of industrial blowers are - fiberglass more. . .