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  2. Air ioniser - Wikipedia

    en.wikipedia.org/wiki/Air_ioniser

    Cations are positive ions missing one or more electrons, resulting in a net positive charge. Some commercial air purifiers are designed to generate negative ions. Another type of air ioniser is the electrostatic discharge (ESD) ioniser (balanced ion generator) used to neutralise static charge.

  3. GPS Air - Wikipedia

    en.wikipedia.org/wiki/GPS_Air

    Among others, one of the room mounted air purifiers made by GPS Air includes the GPS-FC24-AC that can be wall mounted in multiple small cassettes or to existing HVAC equipment. [18] An additional device sold by the company is a "plasma generator" aimed at reducing the amount of microorganisms, including mold and allergens, in the air to prevent ...

  4. Air purifier - Wikipedia

    en.wikipedia.org/wiki/Air_purifier

    An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .

  5. Smog tower - Wikipedia

    en.wikipedia.org/wiki/Smog_tower

    It is different from Daan Roosegaarde's Smog Tower in that it won't depend on the ionization technique to clean the air. The H14 grade HEPA Filter, known for being able to clean up to 99.99% of the particulate matter, will be used instead, together with a pre-filter and activated carbon. [ 27 ]

  6. Electrospray - Wikipedia

    en.wikipedia.org/wiki/Electrospray

    Electrospray is used in some air purifiers. Particulate suspended in air can be charged by aerosol electrospray, manipulated by an electric field, and collected on a grounded electrode. This approach minimizes the production of ozone which is common to other types of air purifiers.

  7. Corona discharge - Wikipedia

    en.wikipedia.org/wiki/Corona_discharge

    A corona discharge is an electrical discharge caused by the ionization of a fluid such as air surrounding a conductor carrying a high voltage. It represents a local region where the air (or other fluid) has undergone electrical breakdown and become conductive, allowing charge to continuously leak off the conductor into the air.

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