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2. High-volume low-speed fan - Wikipedia

   en.wikipedia.org/wiki/High-volume_low-speed_fan

   A High-volume low-speed fan. A high-volume low-speed (HVLS) fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. [1] HVLS fans are generally ceiling fans although some are pole mounted.

3. Axial fan design - Wikipedia

   en.wikipedia.org/wiki/Axial_fan_design

   Factors which determine the performance of the fan include the number and shape of the blades. Fans have many applications including in wind tunnels and cooling towers. 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 ...

4. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   From the late 1970s to the mid-1980s, metal-bladed industrial ceiling fans were popular in lower-income American households, likely due to them being priced lower than wood-bladed models. Industrial style ceiling fans are very popular for household applications in Asia and the Middle East. A 5-blade ceiling fan in a restaurant

5. Fan (machine) - Wikipedia

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

   Ceiling fan with a lamp. Mechanical revolving blade fans are made in a wide range of designs. They are used on the floor, table, desk, or hung from the ceiling (ceiling fan) and can be built into a window, wall, roof, etc. Tower fans tend to have smaller blades inside. Electronic systems generating significant heat, such as computers ...

6. Industrial fan - Wikipedia

   en.wikipedia.org/wiki/Industrial_fan

   Variable pitch axial fans – The blades on these axial fans are manually adjustable to permit the blade angle to be changed. This allows operation over a much wider range of volume/pressure relationships. The blades are adjusted periodically to optimize efficiency by matching the blade pitch to the varying conditions for the application.

7. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   Figure 1: Components of a centrifugal fan An external motor belt driven inline centrifugal fan discharging inline to the exterior of a building through a duct. Unlike non-inline/non-concentric impeller casing design with a cutoff blade above, the concentrically symetric cylinder casing and impeller geometry of inline type redirects the outflow around so that it is parallel to the inflow of gases.