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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. HVLS fans move slowly and distribute large amounts of air at low rotational speed– hence the name "high volume, low speed."

3. Air Movement and Control Association - Wikipedia

   en.wikipedia.org/wiki/Air_Movement_and_Control...

   It applies to a fan or other air moving device when air is used as the test gas with the following exceptions: (a) air circulating fans (ceiling fans, desk fans); (b) positive pressure ventilators; (c) compressors with inter-stage cooling; (d) positive displacement machines; (e) test procedures to be used for design, production, or field testing.

4. Big Ass Fans - Wikipedia

   en.wikipedia.org/wiki/Big_Ass_Fans

   Carey Smith incorporated the Delta T. Corporation in 1994 Lexington, Kentucky, to manufacture and install cooling systems for industrial spaces and warehouses. [1] In 1999, Smith signed an exclusive distribution agreement with a California manufacturer of "high-volume, low-speed" (HVLS) ceiling fans, which were sold to farmers for cooling cattle. [2]

5. 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.

6. Fan (machine) - Wikipedia

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

   A cross-flow fan is a centrifugal fan in which the air flows straight through the fan instead of at a right angle. The rotor of a cross-flow fan is covered to create a pressure differential. A cross-flow fan has two walls outside the impeller and a thick vortex wall inside.

7. Industrial fan - Wikipedia

   en.wikipedia.org/wiki/Industrial_fan

   The robust design allows high tip-speed operation, and therefore this fan is often used in high-pressure applications. Backward inclined – These fans have simple flat blades, backwardly inclined to match the velocity pattern of the air passing through the fan wheel for high-efficiency operation. These fans are typically used in high-volume ...