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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 .
An example of a homemade unit. The Corsi–Rosenthal Box is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [1] or five [2] [3] HVAC particulate air filters that form a cube and a box fan to draw air through the filters.
The water in the air actually sticks to the alumina itself in between the tiny passages as the air passes through them. The water molecules become trapped so that the air is dried out as it passes through the filter. This process is reversible. If the alumina desiccant is heated to ~200 °C, it will release the trapped water.
Coway Co., Ltd. (Korean: 코웨이 주식회사)is an international manufacturer of household appliances, water purifiers, air purifiers, bidets, water softeners, and mattresses from South Korea. [ 2 ] [ 3 ] [ 4 ] Founded and headquartered in Seoul, Coway is the largest water purifier company in the country and owns subsidiaries in Malaysia ...
Air ioniser and purifier with its dust collection plates removed. Air ionisers are used in air purifiers to remove particles from air. [3] Airborne particles become charged as they attract charged ions from the ioniser by electrostatic attraction. The particles in turn are then attracted to any nearby earthed (grounded) conductors, either ...
Unlike air purifiers, which filter or otherwise trap particles within an air circulator, air sanitizers act on airborne microorganisms in open interior air space. A sneeze - or cough -generated pathogenic aerosol will take significant time to be treated by a circulating air purifier simply because air circulators are unable to treat all air in ...
The two most common standards require that an air filter must remove (from the air that passes through) 99.95% (European Standard) [4] or 99.97% (ASME standard) [5] of particles that have a size greater than or equal to 0.3 μm.
Atmospheric water generation is a new technology that can provide high quality drinking water by extracting water from the air by cooling the air and thus condensing water vapour. Rainwater harvesting or fog collection which collect water from the atmosphere can be used especially in areas with significant dry seasons and in areas which ...