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  2. Vornado Air - Wikipedia

    en.wikipedia.org/wiki/Vornado_Air

    The "Vortex Action" technology and uniquely-designed blade was also used for Vornado-branded heaters, air purifiers, and humidifiers. Between January 1989 and August 1990, Vornado sold about 135,000 of its fans with a distinctive spiral front grille. In August 1990, competitor Duracraft began offering a cheaper, visually similar fan, and by ...

  3. Vortex engine - Wikipedia

    en.wikipedia.org/wiki/Vortex_engine

    The vortex is begun by briefly turning on a diffuse heater (83) and electrically driving the turbines (21) as fans. This moves mildly heated air into the vortex arena (2). The air must have only a mild temperature difference because large temperature differences increase mixing with cold ambient air and reduce efficiency.

  4. 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."

  5. Fan heater - Wikipedia

    en.wikipedia.org/wiki/Fan_heater

    Electric fan heater. A fan heater, also called a blow heater, is a heater that works by using a fan to pass air over a heat source (e.g. a heating element). [1] This heats up the air, which then leaves the heater, warming up the surrounding room. They can heat an enclosed space such as a room faster than a heater without a fan, [2] but like any ...

  6. 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 ...

  7. Vortex tube - Wikipedia

    en.wikipedia.org/wiki/Vortex_tube

    The vortex tube, also known as the Ranque-Hilsch vortex tube, is a mechanical device that separates a compressed gas into hot and cold streams. The gas emerging from the hot end can reach temperatures of 200 °C (390 °F), and the gas emerging from the cold end can reach −50 °C (−60 °F). [ 1 ]