HEPA Air Filter
900 - 1,500 Per Piece
1 NOS (MOQ)
Hepa is a type of air filter. Filters meeting the HEPA standard have many applications, including use in medical facilities, automobiles, aircraft, and homes. HEPA filters are composed of a mat of randomly arranged fibres. The fibres are typically composed of fiberglass and possess diameters between 0.5 and 2.0 micrometers. Key factors affecting function are fibre diameter, filter thickness, and face velocity. The air space between HEPA filter fibres is much greater than 0.3 μm. The common assumption that a HEPA filter acts like a sieve where particles smaller than the largest opening can pass through is incorrect. Unlike membrane filters at this pore size, where particles as wide as the largest opening or distance between fibres cannot pass in between them at all, HEPA filters are designed to target much smaller pollutants and particles. These particles are trapped (they stick to a fibre) through a combination of the following three mechanisms : Interception, where particles following a line of flow in the air stream come within one radius of a fibre and adhere to it. Impaction, where larger particles are unable to avoid fibres by following the curving contours of the air stream and are forced to embed in one of them directly; this effect increases with diminishing fibre separation and higher air flow velocity. Diffusion, an enhancing mechanism that is a result of the collision with gas molecules by the smallest particles, especially those below 0.1 µm in diameter, which are thereby impeded and delayed in their path through the filter; this behaviour is similar to Brownian motion and raises the probability that a particle will be stopped by either of the two mechanisms above; it becomes dominant at lower air flow velocities.Diffusion predominates below the 0.1 μm diameter particle size. Impaction and interception predominate above 0.4 μm. In between, near the Most Penetrating Particle Size (MPPS) 0.3 μm, both diffusion and interception are comparatively inefficient. Because this is the weakest point in the filter's performance, the HEPA specifications use the retention of these particles to classify the filter.Lastly, it is important to note that HEPA filters are designed to arrest very fine particles effectively, but they do not filter out gasses andodor molecules. Circumstances requiring filtration of volatile organic compounds, chemical vapors, cigarette, pet, and/or flatulenceodors call for the use of an activated carbon (charcoal) filter instead of or in addition to a HEPA filter. HEPA filters, as defined by the DOE standard adopted by most American industries, remove at least 99.97% of airborne particles 0.3 micrometers (µm) in diameter. The filter's minimimal resistance to airflow, or pressure drop, is usually specified around 300 Pa at its nominal flow rate. The specification usually used in the European Union is the European Norm EN 1822:2009. It defines several classes of HEPA filters by their retention at the given Most Penetrating Particle Size (MPPS):
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LLOYD FLC48A 4 Ton Cassette AC Overview Low Voltage Start Up YesQuiet Operation YesAuto Protect Function YesIntelligent Defrosting YesLLOYD FLC48A 4 Ton Cassette AC not only looks contemporary but is also extremely quiet and installation friendly Its ability to distribute cool and fresh air uniformly in all the four directions without ducting makes it an ideal choice for the places where ducting is not practically possible for air flow Capacity LLOYD FLC48A Cassette air conditioner has 4 Ton cooling capacity Design LLOYD FLC48A 4 Ton Cassette air conditioner is extremely discrete with only the grille showing in ceiling The unit can fit neatly into the ceiling and distribute cool conditioned air through all the four sides The flaps allow the cool air to be directed in either a pre set or sweep pattern Air Filters The air conditioner has removable and washable dust filters which trap all the dust particles and allergens from the air The catechin filter traps bacteria and germs providing hygienic cooling Controls During humid weather LLOYD FLC48A 4 Ton Cassette AC will make for a perfect choice as it comes with an independent dehumidification feature which controls the humidity level in the atmosphere Speed of Cooling LLOYD FLC48A 4 Ton Cassette AC is equipped with internal threaded copper pipe which provides quick and effective cooling The cool air is distributed in all the four directions cooling each and every nook and corner of your room Sleep Mode and Timer LLOYD FLC48A 4 Ton Cassette AC features a sophisticated weekly timer which allows you to programme the air conditioning system in advance to operate only as and when required Noise Level It has a quiet operation having very low indoor noise level Any Other Specs LLOYD FLC48A 4 Ton Cassette AC comes with various other features like Auto restart memory backup low voltage start up auto protect function etc LLOYD FLC48A 4 Ton Cassette AC SpecsCapacity 4 Ton s AC Type CassetteUsage OfficeWarranty 1 Year s Noise Level Indoor 41 DBTimers YesAuto Restart Yes
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