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2. Axial fan design - Wikipedia

   en.wikipedia.org/wiki/Axial_fan_design

   The stall zone for the single axial fan and axial fans operated in parallel are shown in the figure. [4] The Figure shows the Stall Prone Areas differently for One fan and Two fans in parallel. [4] The following can be inferred from the graph : For the Fans operated in parallel, the performance is less when compared to the individual fans.

3. Computer fan - Wikipedia

   en.wikipedia.org/wiki/Computer_fan

   Where noise is an issue, larger, slower-turning fans are quieter than smaller, faster fans that can move the same airflow. Fan noise has been found to be roughly proportional to the fifth power of fan speed; halving the speed reduces the noise by about 15 dB. [22] Axial fans may rotate at speeds of up to around 38,000 rpm for smaller sizes. [23]

4. Fan (machine) - Wikipedia

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

   This type of fan is used in a wide variety of applications, ranging from small cooling fans for electronics to the giant fans used in cooling towers. Axial flow fans are applied in air conditioning and industrial process applications. Standard axial flow fans have diameters of 300–400 mm or 1,800–2,000 mm and work under pressures up to 800 ...

5. Garfield Thomas Water Tunnel - Wikipedia

   en.wikipedia.org/wiki/Garfield_Thomas_Water_Tunnel

   The Boundary Layer Research Facility (BLRF) operates a 12-inch turbulent pipe flow of glycerine. [8] Additionally, the facility operates a 20 hp (14.91 kW), open-jet, 1,750 rpm Axial-Flow Fan with a 36.58 m/s (81.83 mph) maximum velocity used for basic engineering research in turbomachinery blading. Another 2.75 meter diameter, 100 hp (74.6 kW ...

6. Air Movement and Control Association - Wikipedia

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

   AMCA Publication 201 - Fans and Systems. Part 2 of the Fan Application Manual, discusses the effect of inlet and outlet connections on fan performance. It includes separate axial fan factors and is aimed primarily at the designer of the air moving system. AMCA Publication 202 - Troubleshooting. Part 3 of the Fan Application Manual, helps to ...

7. 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."