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.
De medyske mienskip is noch altyd net wis hoefolle luchtreinigingsapparaten eins helpe om de fersprieding fan it coronavirus te stopjen. D'r is gjin twifel dat se allergielijers kinne helpe en in protte jierren binne brûkt, mar it filterjen fan de details fan lytse dieltsjes mei COVID-19 is folle dreger. Gjin dokter seit dat draachbere apparatuer foar luchtreiniging dit probleem kin oplosse. Eksperts riede oan om maskers te dragen en fuort te bliuwen fan 'e maatskippij as de earste line fan definsje. It is folle makliker om te soargjen dat COVID-19-dieltsjes noait yn 'e loft komme dan se te filterjen nei't se binne ferspraat. Lykwols, de measte lucht suvering apparatuer net skea dizze situaasje.
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.
Wol gewoan in idee jaan. Yn de operaasjekeamer wurdt de lucht om de trije oant seis minuten ferwiksele, wylst yn it kantoargebou ferskate kearen yn de oere wiksele wurdt.
“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.
Om krekt te wêzen, is it lestich om te studearjen hoe't jo in finster iepenje om fentilaasje te feroarjen. De luchtstream yn in binnenromte is lestich te modellearjen of sels te foarsizzen. It bêste geboumodel yn 'e wrâld is dreech om it probleem fan finsteriepening op te lossen, om't it luchtstreamsysteem sa yngewikkeld is. Wichtichste, it iepenjen fan finsters kin like effektyf wêze as luchtreinigers, of sels effektiver. It ferwetterjen fan binnenlucht dy't COVID-19 kin befetsje mei firusfrije bûtenlucht sil de konsintraasje fan it firus yn 'e loft ferminderje, wêrtroch't de kâns op ynfeksje ferminderet. Undersikers hawwe noch muoite om út te finen hoefolle fentilaasje en hokker type it bêste is. D'r is gewoan net genôch konsensus yn 'e medyske mienskip.
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.”
Net hawwende alle antwurden is net ideaal, mar it is better dan pretend te hawwen antwurden. Earlik wêze oer wat wol of net wurkje kin minsken helpe om bettere persoanlike karren te meitsjen oer hoe't se feilich bliuwe kinne. Lykas in protte hollen relatearre oan luchtreinigers, dogge de hollen it net. Op syn bêst kinne se fersin wurde mei in gefoel fan feiligens. Yn it slimste gefal kinne ionizers, plasma-generators en elektrostatyske precipitators positive gefaren produsearje. Dizze apparaten laden dieltsjes op sadat se oan it oerflak plakke ynstee fan yn 'e loft te driuwen, en dêrmei ozon as byprodukt produsearje.
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.
De bêste praktiken foar skjinne lucht draaie om fentilaasje. Yn in moderne kantoar kin it iepenjen fan finsters om in protte redenen net mooglik wêze. Normaal kinne finsters hielendal net iepene wurde. Yn dit gefal kinne jo soargje foar it brûken fan hege kwaliteit lucht filtration apparaten. Sûnt net-ozon-basearre luchtfiltraasje gjin skealike side-effekten produseart, binne de ienige neidielen fan draachbere loftfiltraasjeapparatuer kosten en lûd. De skjinne loftferfiersnelheid (CADR) fan in apparaat fertelt jo it measte fan syn effektiviteit. Dizze beoardieling hâldt rekken mei de effisjinsje fan it filter en de krêft fan 'e fan om te bepalen hoefolle lucht troch it filter streamt. Hoe heger de CADR, hoe grutter de suveringsromte. De juste apparatuer keapje is allinich om de juste keamergrutte te bepalen. Unthâld, hoe grutter it apparaat, hoe sterker de fan sil de loft sirkulearje, en de lûder sil it lûd wêze. Yn in kantoaromjouwing moat rekken hâlden wurde mei in soad lûd. De priis fan in hege kwaliteit HEPA luchtreiniger begjint by sawat $ 200, en de priis nimt ta as it CADR-nivo ferheget. Guon minsken bouwe sels har eigen luchtreinigers troch MERV-filters te binen oan boxfans foar minder dan $ 30.
By it omgean mei apparatuer mei medyske easken is it altyd wichtich om feit te skieden fan fiksje en te profitearjen fan marketing. Produktfabrikanten dy't hoopje te profitearjen fan 'e enoarme fraach nei apparatuer foar COVID-19-mitigaasje hawwe de merk oerstreamd mei draachbere apparatuer foar luchtreiniging. Eksperts leauwe dat hege-kwaliteit apparatuer sil wis net skea. It is yndie mooglik om luchtreinigers te meitsjen troch hûnderten of sels tûzenen dollars te besteegjen oan apparatuer foar luchtreiniging, mar wy kinne noait witte hoefolle. In better antwurd is om in masker te dragen, en as it mooglik is, iepenje it finster.
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Post tiid: Mar-16-2021
