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2. Fan (machine) - Wikipedia

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

   A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...

3. Airbus E-Fan - Wikipedia

   en.wikipedia.org/wiki/Airbus_E-Fan

   The E-Fan 4.0 appears identical to the E-Fan apart from a fuselage stretch. To increase flight duration the planned E-Fan 4.0 would have had a hybrid-electric system that will have a small engine to charge the battery (like a range extender), which would have increased its duration from 2 hours to 3.5 hours. The first flight of the E-Fan 2.0 ...

4. The Best Battery-Powered Fans Let You Stay Cool On the Go

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5. Evaporative cooler - Wikipedia

   en.wikipedia.org/wiki/Evaporative_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 electric fan and a hand-operated water spray pump, are sold as novelty items. Their effectiveness in everyday use is unclear. [citation needed]

6. Powered air-purifying respirator - Wikipedia

   en.wikipedia.org/wiki/Powered_air-purifying...

   a powered (motor-driven) fan which forces incoming air into the device, a filter (or multiple filters) for delivery to the user for breathing, and; a battery or other power source. The mask may be hard and tight-fitting, or flexible and loose-fitting. The former affords a higher level of protection, but is less comfortable. [2]

7. Hand fan - Wikipedia

   en.wikipedia.org/wiki/Hand_fan

   Handheld Brise fan from 1800. A handheld fan, or simply hand fan, is a broad, flat surface that is waved back-and-forth to create an airflow. Generally, purpose-made handheld fans are folding fans, which are shaped like a sector of a circle and made of a thin material (such as paper or feathers) mounted on slats which revolve around a pivot so that it can be closed when not in use.