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A 120 mm variable speed fan. If they use fans at all, quiet PCs typically use larger-than-usual low-speed fans with quiet-running motors and bearings. The 120 mm size is common, and 140 mm fans are used where cases or heat sinks allow them. Quiet fan manufacturers include Nexus, EBM-Papst, [30] Yate Loon, Scythe, [31] and Noctua. [32]
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]
A centrifugal fan is a mechanical device for moving air or other gases in a direction at an angle to the incoming fluid. 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).
be quiet! is a German computer hardware brand owned by Listan GmbH, which manufactures power supply units, CPU coolers, computer cases and case fans.The main target groups for products in the be quiet! range are PC enthusiasts and computer game players as well as system integrators.
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."
BYU physicists quiet fans in computers, office equipment; Anti-Noise, Quieting the Environment with Active Noise Cancellation Technology, IEEE Potentials, April 1992; Christopher E. Ruckman's ANC FAQ (This page was created in 1994 and maintained until approximately 2010, but is no longer active.)
Choose your Most Memorable Heartwarming Moment of 2024. Choose between community members rallying together to support those affected by Hurricane Helene, the return to Normandy on the 80th ...
Orfield Labs held the 2005 and 2013 Guinness World Record for the quietest place on Earth. Microsoft ’s anechoic chamber in Redmond, Washington eventually beat Orfield. Orfield retook the record in November 2021 with a sound level of (-)24.9 dbA.
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