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2. Evaporative cooler - Wikipedia

   en.wikipedia.org/wiki/Evaporative_cooler

   A fan blows a fine mist of water into the air. If the air is not too humid, the water evaporates, absorbing heat from the air, allowing the misting fan to also work as an air cooler. A misting fan may be used outdoors, especially in a dry climate. It may also be used indoors. Small portable battery-powered misting fans, consisting of an ...

3. This Best-Selling Portable Cooling Fan a ‘Life Saver’—and It ...

   www.aol.com/lifestyle/best-selling-portable...

   The Jisulife Handheld Mini Fan is nearly half-off ahead of Amazon Prime Day. It’s portable, effective, and essential in battling heat wave fatigue. This Best-Selling Portable Cooling Fan a ...

4. Cool Down Your Space From Above With These Editor-Recommended ...

   www.aol.com/7-best-ceiling-fans-silent-124800690...

   Most fans still have pull chains to control the speed and lighting, but several also have hand remotes, wall controls, or even smart home capability. If you want to go with a cheaper model without ...

5. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   The fan enclosure is directly behind the board, and the filters can be seen at the top. The safety interlock switch is at the bottom left. In the lower middle is the capacitor. Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of

6. 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).

7. Fan (machine) - Wikipedia

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

   Fans inside audio power amplifiers help to draw heat away from the electrical components. Variable pitch fan: A variable-pitch fan is used to precisely control static pressure within supply ducts. The blades are arranged to rotate upon a control-pitch hub. The fan wheel will spin at a constant speed. The blades follow the control pitch hub.