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2. Window fan - Wikipedia

   en.wikipedia.org/wiki/Window_fan

   Window fans are designed to fit into open windows, and often have expandable side panels to cover the entire window opening. Most units have either one large fan, or two small fans mounted side by side. [1] Most window fans have two or three speeds, and some are electrically reversible so that the user can switch between intake and exhaust modes.

3. Centrifugal fan - Wikipedia

   en.wikipedia.org/wiki/Centrifugal_fan

   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).

4. Fan (machine) - Wikipedia

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

   Centrifugal fans blow air at right angles to the intake of the fan and spin the air outwards to the outlet (by deflection and centrifugal force). The impeller rotates, causing air to enter the fan near the shaft and move perpendicularly from the shaft to the opening in the scroll-shaped fan casing.

5. These are the best Labor Day vacuum deals from Dyson ... - AOL

   www.aol.com/lifestyle/these-are-the-best-labor...

   A new vacuum can make a huge impact on your home. If you’ve still got that old Hoover you got as a wedding gift, it’s time to upgrade. And if you’ve been looking for a reason to splurge on a ...

6. Air suction valve - Wikipedia

   en.wikipedia.org/wiki/Air_suction_valve

   Its function is the same, using a vacuum at the intake to trigger a valve that pulses atmospheric air into the exhaust. The original "iron barrel" style engine did this with a hose from the PAV going to the exhaust pipe, the newer (2003–2009) AVL aluminum engine pulses the gas directly into the exhaust port on the head of the engine itself.

7. Suction excavator - Wikipedia

   en.wikipedia.org/wiki/Suction_excavator

   The suction excavator uses suction fans for the airflow to suck up the material that is then transported into the holding tank. Hydro excavation, a type of suction excavator using high-pressure water jets, is sometimes referred to as daylighting, as the underground utilities are exposed to daylight during the process. [2]

8. Computer cooling - Wikipedia

   en.wikipedia.org/wiki/Computer_cooling

   A finned air cooled heatsink with fan clipped onto a CPU, with a smaller passive heatsink without fan in the background A 3-fan heatsink mounted on a video card to maximize cooling efficiency of the GPU and surrounding components Commodore 128DCR computer's switch-mode power supply, with a user-installed 60 mm cooling fan.

9. Ventilation (architecture) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(architecture)

   Air can be exhausted through pressurized hoods or the use of fans and pressurizing a specific area. [35] A local exhaust system is composed of five basic parts: A hood that captures the contaminant at its source; Ducts for transporting the air; An air-cleaning device that removes/minimizes the contaminant; A fan that moves the air through the ...