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.
Níl an pobal leighis cinnte fós cé mhéad gléas íonú aeir a chuidíonn le scaipeadh an choróinvíris a stopadh. Níl aon amhras ach gur féidir leo cabhrú le daoine atá ag fulaingt ailléirge agus baineadh úsáid astu le blianta fada anuas, ach tá sé i bhfad níos deacra sonraí na gcáithníní beaga ina bhfuil COVID-19 a scagadh amach. Ní deir aon dochtúir gur féidir le trealamh íonú aer iniompartha an fhadhb seo a réiteach. Molann saineolaithe maisc a chaitheamh agus fanacht amach ón tsochaí mar an gcéad líne cosanta. Tá sé i bhfad níos éasca a chinntiú nach dtéann cáithníní COVID-19 isteach san aer choíche ná iad a scagadh amach tar éis iad a bheith scaipthe. Mar sin féin, ní dhearna an chuid is mó de threalamh íonú aeir dochar don chás seo.
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.
Just ag iarraidh smaoineamh a thabhairt duit. Sa seomra oibriúcháin, athraítear an t-aer gach trí go sé nóiméad, agus san fhoirgneamh oifige, athraítear é arís agus arís eile in aghaidh na huaire.
“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.
Le bheith beacht, tá sé deacair staidéar a dhéanamh ar conas fuinneog a oscailt chun aeráil a athrú. Is deacair an sruth aeir i spás laistigh a shamhaltú nó fiú a thuar. Is deacair an tsamhail tógála is fearr ar domhan an fhadhb a bhaineann le hoscailt fuinneoige a réiteach mar go bhfuil an córas sreafa aeir chomh casta.Féadfaidh sé go bhféadfadh oscailt fuinneoga a bheith chomh héifeachtach le íonaitheoirí aeir, nó fiú níos éifeachtaí. Má dhéantar aer laistigh a bhféadfadh COVID-19 a bheith ann le haer lasmuigh saor ó víreas, laghdófar tiúchan an víris san aer, rud a laghdóidh an seans ionfhabhtaithe. Tá taighdeoirí fós ag streachailt le fáil amach cé mhéad aerála agus cén cineál is fearr. Níl go leor comhdhearcadh sa phobal leighis.
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.”
Níl sé iontach gan na freagraí go léir a bheith agat, ach is fearr ligean ort go bhfuil freagraí agat. Má bhíonn tú macánta faoi na rudaí a d'fhéadfadh nó nach n-oibreoidh, is féidir cabhrú le daoine roghanna pearsanta níos fearr a dhéanamh maidir le fanacht sábháilte. Cosúil le go leor cinnirí a bhaineann le purifiers aer, ní dhéanann na cinnirí. Ar a fheabhas, is féidir iad a dhearmad mar mhothú slándála. Sa chás is measa, is féidir le ionizers, gineadóirí plasma agus deascóirí leictreastatach guaiseacha dearfacha a tháirgeadh. Gearrann na gléasanna seo cáithníní ionas go gcloíonn siad leis an dromchla seachas snámh san aer, rud a tháirgeann ózón mar sheachtháirge.
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.
Baineann na cleachtais is fearr maidir le haer glan le haeráil. In oifig nua-aimseartha, seans nach mbeidh sé indéanta fuinneoga a oscailt ar go leor cúiseanna. De ghnáth, ní féidir fuinneoga a oscailt ar chor ar bith. Sa chás seo, is féidir leat a chinntiú go n-úsáidfear feistí scagacháin aeir ar ardchaighdeán. Ós rud é nach dtáirgeann scagachán aeir neamh-ózóin fo-iarsmaí díobhálacha, is iad na míbhuntáistí amháin a bhaineann le trealamh scagacháin aer iniompartha ná costas agus torann. Insíonn ráta aistrithe aer glan (CADR) feiste duit an chuid is mó dá éifeachtacht. Cuireann an rátáil seo san áireamh éifeachtacht an scagaire agus cumhacht an lucht leanúna chun a chinneadh cé mhéad aeir a shreabhann tríd an scagaire. Dá airde an CADR, is mó an spás íonúcháin. Níl ann ach an trealamh ceart a cheannach chun an méid seomra ceart a chinneadh. Cuimhnigh, dá mhéad an gléas, is amhlaidh is láidre a scaipfidh an lucht leanúna an t-aer, agus is airde an fhuaim a bheidh. I dtimpeallacht oifige, ní mór go leor torainn a mheas. Tosaíonn praghas íonaitheoir aeir HEPA ardcháilíochta ag thart ar $200, agus ardaíonn a phraghas de réir mar a mhéadaíonn an leibhéal CADR. Tógann roinnt daoine a gcuid íonaitheoirí aeir féin fiú trí scagairí MERV a cheangal le lucht leanúna na mbosca ar feadh níos lú ná $30.
Agus tú ag déileáil le trealamh a bhfuil riachtanais leighis aige, tá sé tábhachtach i gcónaí fíoras a scaradh ó fhicsean agus leas a bhaint as margaíocht. Tá monaróirí táirgí atá ag súil le brabús a bhaint as an éileamh mór ar threalamh maolaithe COVID-19 tar éis an margadh a thuilte le trealamh iniompartha íonú aeir. Creideann saineolaithe go cinnte nach ndéanfar dochar do threalamh ardchaighdeáin. Is féidir go deimhin purifiers aeir a dhéanamh trí na céadta nó fiú na mílte dollar a chaitheamh ar threalamh íonú aeir, ach b'fhéidir nach mbeadh a fhios againn cé mhéad. Is é freagra níos fearr ná masc a chaitheamh, agus más féidir, an fhuinneog a oscailt.
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Am postála: Mar-16-2021
