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  2. Centrifugal fan - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_fan

    Centrifugal fans often contain a ducted housing to direct outgoing air in a specific direction or across a heat sink; such a fan is also called a blower, blower fan, or squirrel-cage fan (because it looks like a hamster wheel). Tiny ones used in computers are sometimes called biscuit blowers. These fans move air from the rotating inlet of the ...

  3. Industrial fan - Wikipedia

    en.wikipedia.org/wiki/Industrial_fan

    The housing design is compact to minimize the floor space requirement. Radial tipped – These fans have wheels that are backward curved, but in a way slightly different from backward curved fans. Backward curved fans have wheels whose blades curve outward, while radial-tip fans' blades are curved inward and radial at their tips (hence the name ...

  4. Axial fan design - Wikipedia

    en.wikipedia.org/wiki/Axial_fan_design

    Design parameters include power, flow rate, pressure rise and efficiency. [1] Axial fans generally comprise fewer blades (two to six) than centrifugal fans. Axial fans commonly have larger radius and lower speed (ω) than ducted fans (esp. at similar power. Stress proportional to r^2).

  5. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. " Refrigeration " is sometimes added to the field's abbreviation as HVAC&R or HVACR , or "ventilation" is dropped, as in HACR (as in the designation of HACR-rated circuit breakers ).

  6. Dust collector - Wikipedia

    en.wikipedia.org/wiki/Dust_collector

    Centrifugal fans consist of a wheel or a rotor mounted on a shaft that rotates in a scroll-shaped housing. Air enters at the eye of the rotor, makes a right-angle turn, and is forced through the blades of the rotor by centrifugal force into the scroll-shaped housing. The centrifugal force imparts static pressure to the air.

  7. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    The goal of HVAC design is to balance indoor environmental comfort with other factors such as installation cost, ease of maintenance, and energy efficiency. The discipline of HVAC includes a large number of specialized terms and acronyms, many of which are summarized in this glossary. air changes per hour

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  9. Fan (machine) - Wikipedia

    en.wikipedia.org/wiki/Fan_(machine)

    This design creates lift by deflecting the wake downward due to the rotational direction of the fan, causing a large Magnus force, similar to a spinning leading-edge cylinder. Another configuration utilizing a crossflow fan for thrust and flow control is the propulsive wing , another experimental concept prototype initially developed in the ...