Propeller Wall and Roof Fans - Buffalo Fan

By: Oleg Tetchel

Axial Filtered Air Vents are used primarily in industrial facilities to supply filtered air to spaces housing personnel and electrical and / or electronic equipment. Available in 'draw-thru', or 'blow-thru' configuartions, with removable filter housing cover and easy-clean filters.

Buffalo Fan Canada axial flow panel fans are designed for low pressure building ventilation, room ventilation, industrial ventilation, commercial ventilation and industrial process application. Typical applications include heat, smoke, and fume removal; process ventilation and process air handling; proces drying with ambient or preheated air; comfort process cooling and general ventilation of buildngs. Available in direct drive arrangement 4 and corresponding belt drive arrangement 9. Sizes from 6 thru 96. Capacities: to 350,000 CFM. Static pressure to 2.5 inches water gauge.

Spark Resistant X-proof construction: wall fan for non-sparking x-proof applications is supplied in AMCA A (all aluminum or monel airsteram), AMCA B (aluminum wheel, or monel wheel), or AMCA C (buffer type) spark resistant construction. For AMCA A applications wheel is made of non-ferous material with monel shaft and special x-proof motor.

High temperature construction: wall fan is avaialble in high temeparture construction with high temperature motor and steel prop, or stainless steel prop.

Corrosion resistant construction and chemical duty construction: for corrosive environment wall fans are avaialble in 304 SS, 316 SS, or 316 L stainless steel construction. For chemical process applications wall fans are available in fiber reinforced plastic (FRP) construction, or in polypropylene construction, or in plastic.

Wall fan accessories: wall housing, wall cabinet, heavy gauge housing, extended wall housing, wall housing access door, inlet guard, outlet guard, caged guard, fixed louver, shutter, manual shutter with pull chain and quadrant lock, gravity automatic shutter, motorized shutter, back draft damper, shutter motor, BELIMO motor, NEP motor, Multiproducts motor, Delay switch, Speed controller, VFD, intake hood, discharge hood, weather hood, hood bird guard, hood bird screen, insect screen.

Controls and drives: pressure switch, end switch, electrical damper motor, delay switch, pneumatic actuator, speed control, vfd control, motor starter, carbon monoxide sensor, oxygen sensor, electronic gas sensors and others.

At this juncture it is prudent to reiterate that a fan running at a particular speed can have an infinite number of operating points all along its characteristic curve. The fan will interact with the system to produce an operating point at the intersection of the system curve and the fan curve. Note that it is the system in which the fan is installed that will determine the operating point on the fan curve. Thus it is vitally important that the system designer accurately determine the system losses in order to ensure that the actual air flow rate is as close as possible to the design air flow rate.

Oleg Tchetchel
Canadian Process Design Engineer
Buffalo Fan Co.

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Oleg Tchetchel Canadian Process Design Engineer Buffalo Fan Co.

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