In the era of deadly airborne viruses, air purification equipment has now shown various shapes and sizes. At last month’s Consumer Electronics Show CES, the company introduced a new portable air filter device for your bedside, cup holder, table top, meeting room, and even hanging around your neck. Although each of these devices can purify the air, the problem is that none of them can ventilate. Science increasingly shows that if you are serious about stopping the spread of the coronavirus, masks, social distancing and opening windows may do more than expensive electronic purification equipment.
Most air purifier designs use the same basic method. There is a filter and fan. The fan draws in and circulates air through the filter. The filters in these types of equipment are usually made of paper, fiber (usually glass fiber) or some type of net, which allows it to remove contaminants such as dust and pollen well, but cannot remove gas or less. particle. It is important to remember that the work efficiency claimed by the air purifier manufacturer is accurate after laboratory testing, but it is almost impossible to recreate the specific laboratory conditions. The location, installation, flow rate and running time of the purifier will greatly affect its working effect. Ventilation is usually a big problem. After the air is “purified”, the fan circulates it out, but the air is not ventilated to other areas of the space. Therefore, air purifiers often repeatedly purify the same air in their vicinity. The smaller the device, the greater the basic problem.
Il-komunità medika għadha mhix ċerta kemm apparat għall-purifikazzjoni tal-arja fil-fatt jgħin biex iwaqqaf it-tixrid tal-koronavirus. M'hemm l-ebda dubju li jistgħu jgħinu lil dawk li jbatu minn allerġiji u ilhom jintużaw għal ħafna snin, iżda l-iffiltrar tad-dettalji ta 'partiċelli żgħar li fihom COVID-19 huwa ħafna aktar diffiċli. L-ebda tabib ma jgħid li t-tagħmir portabbli tal-purifikazzjoni tal-arja jista 'jsolvi din il-problema. L-esperti jirrakkomandaw li tilbes maskri u li toqgħod 'il bogħod mis-soċjetà bħala l-ewwel linja ta' difiża. Huwa ħafna aktar faċli li jiġi żgurat li l-partiċelli tal-COVID-19 qatt ma jidħlu fl-arja milli jiġu ffiltrati wara li jkunu mxerrda. Madankollu, il-biċċa l-kbira tat-tagħmir tal-purifikazzjoni tal-arja ma għamel ħsara lil din is-sitwazzjoni.
More useful than filtration is to increase ventilation. Studies have shown that keeping the air “fresh” is one of the best ways to stop diffusion. Known as air change, the rate at which air is completely replaced in a space is a key indicator of the level of symbiosis risk. The more changes in the air, the better. Mayo Clinic professor and researcher Dr. Mark Ereth explained in our recent “Flexible Workplace” report how much air is needed to pass through a room to help eliminate ultrafine particles such as COVID-19. In an office building, there are several times an hour every three to six minutes,” he said. There is evidence that, with the aid of a central ventilation system, air purifiers increase the air exchange rate or volume. But open the windows is also like this.
Biss irrid nagħtik idea. Fil-kamra tal-operazzjoni, l-arja tinbidel kull tlieta sa sitt minuti, filwaqt li fil-bini tal-uffiċċju, tinbidel diversi drabi fis-siegħa.
“The most important thing to consider when buying an air filter is whether the space you want to use in it already has good ventilation-then the air filter won’t increase too much,” Dr. Shelly Miller, an environmental expert, Colorado An engineer at the University of Boulder told Webmd that his research focuses on the spread of airborne diseases.
Biex tkun preċiża, huwa diffiċli li tistudja kif tiftaħ tieqa biex tibdel il-ventilazzjoni. Il-fluss tal-arja fi spazju ta 'ġewwa huwa diffiċli li jiġi mmudellat jew saħansitra previst. L-aħjar mudell tal-bini fid-dinja huwa diffiċli biex issolvi l-problema tal-ftuħ tat-twieqi minħabba li s-sistema tal-fluss tal-arja hija tant ikkumplikata. L-iktar importanti, il-ftuħ tat-twieqi jista 'jkun effettiv daqs purifikaturi tal-arja, jew saħansitra aktar effettiv. Id-dilwizzjoni tal-arja ta’ ġewwa li jista’ jkun fiha COVID-19 b’arja ta’ barra ħielsa mill-virus tnaqqas il-konċentrazzjoni tal-virus fl-arja, u b’hekk tnaqqas iċ-ċans ta’ infezzjoni. Ir-riċerkaturi għadhom qed jitħabtu biex isibu kemm ventilazzjoni u liema tip huwa l-aħjar. Sempliċement m'hemmx biżżejjed kunsens fil-komunità medika.
Columbia University virologist Angela Rasmussen told Vox: “There is no perfect “safe” level of ventilation because we actually don’t know what “safe” is because we don’t know how much exposure will cause spread.”
Li ma jkollokx it-tweġibiet kollha mhix ideali, imma aħjar milli tippretendi li jkollok tweġibiet. Li tkun onest dwar x’jista’ jaħdem jew ma jistax jgħin lin-nies jagħmlu għażliet personali aħjar dwar kif jibqgħu sikuri. Bħal ħafna irjus relatati mal-purifikaturi tal-arja, l-irjus ma jagħmlux dan. Fl-aħjar, jistgħu jiġu żbaljati għal sens ta 'sigurtà. Fl-agħar każ, jonizzaturi, ġeneraturi tal-plażma u preċipitaturi elettrostatiċi jistgħu jipproduċu perikli pożittivi. Dawn l-apparati jiċċarġjaw partiċelli sabiex jeħel mal-wiċċ minflok ma jżomm f'wiċċ l-ilma fl-arja, u b'hekk jipproduċu l-ożonu bħala prodott sekondarju.
ASHRAE, a professional association that specializes in setting standards for ventilation and air-conditioning, said that when using equipment that may generate large amounts of ozone (respiratory tract irritant) as a by-product of its operation, “must be extra careful.” HEPA and ASHRAE recommend avoiding the use of any air purification devices that produce ozone as a by-product of cleaning indoor air in living spaces.
L-aħjar prattiki għall-arja nadifa jduru madwar il-ventilazzjoni. F'uffiċċju modern, il-ftuħ ta 'twieqi jista' ma jkunx fattibbli għal ħafna raġunijiet. Normalment, twieqi ma jistgħux jinfetħu xejn. F'dan il-każ, tista 'tiżgura l-użu ta' apparati ta 'filtrazzjoni ta' l-arja ta 'kwalità għolja. Peress li l-filtrazzjoni tal-arja mhux ibbażata fuq l-ożonu ma tipproduċix effetti sekondarji ta 'ħsara, l-uniċi żvantaġġi ta' tagħmir portabbli ta 'filtrazzjoni tal-arja huma l-ispiża u l-istorbju. Ir-rata ta 'trasferiment ta' arja nadifa (CADR) ta 'apparat tgħidlek ħafna mill-effettività tiegħu. Din il-klassifikazzjoni tqis l-effiċjenza tal-filtru u l-qawwa tal-fann biex tiddetermina kemm tgħaddi arja minn ġol-filtru. Iktar ma jkun għoli l-CADR, akbar ikun l-ispazju tal-purifikazzjoni. Ix-xiri tat-tagħmir it-tajjeb huwa biss biex jiġi ddeterminat id-daqs it-tajjeb tal-kamra. Ftakar, iktar ma jkun kbir l-apparat, iktar il-fann ikun b'saħħtu jiċċirkola l-arja, u iktar ikun qawwi l-ħoss. F'ambjent ta 'uffiċċju, ħafna storbju għandu jiġi kkunsidrat. Il-prezz ta 'purifikatur ta' l-arja HEPA ta 'kwalità għolja jibda minn madwar $200, u l-prezz tiegħu jiżdied hekk kif il-livell CADR jiżdied. Xi nies saħansitra jibnu l-purifikaturi tal-arja tagħhom stess billi jorbtu l-filtri MERV mal-fannijiet tal-kaxxa għal inqas minn $30.
Meta tittratta tagħmir b'rekwiżiti mediċi, huwa dejjem importanti li tissepara l-fatt mill-finzjoni u li tibbenefika mill-kummerċjalizzazzjoni. Il-manifatturi tal-prodotti li jittamaw li japprofittaw mid-domanda kbira għal tagħmir ta 'mitigazzjoni ta' COVID-19 għarrqu s-suq b'tagħmir portabbli ta 'purifikazzjoni ta' l-arja. L-esperti jemmnu li tagħmir ta 'kwalità għolja ċertament mhux se ssirilhom ħsara. Huwa tabilħaqq possibbli li tagħmel purifikaturi ta 'l-arja billi tonfoq mijiet jew saħansitra eluf ta' dollari fuq tagħmir ta 'purifikazzjoni ta' l-arja, iżda qatt ma nistgħu nkunu nafu kemm. Tweġiba aħjar hija li tilbes maskra, u jekk possibbli, tiftaħ it-tieqa.
Propmodo jispjega u jiddefinixxi xejriet għall-professjonisti tal-proprjetà immobbli kummerċjali billi jgħaqqad aħbarijiet, riċerka, avvenimenti u servizzi ta 'kummerċjalizzazzjoni.
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Ħin tal-post: Mar-16-2021
