Coronaviruses amatha kupatsirana ngati m'malovu, ochepa aiwo amatha kufalikira polumikizana * 13, ndipo amathanso kufalikira ndi fecal-oral * 14, ndipo pakadali pano akuwoneka kuti amafalitsidwa ndi ma aerosols.
Kutumiza kwa Droplet kwenikweni ndi njira yofikira mtunda waufupi yokhala ndi ma mita ochepa chabe, pomwe ma aerosols amatha kupita kutali.
Mwachitsanzo, kuyetsemula kumakhala ndi madontho pafupifupi 40,000, omwe madontho akulu ndi> 60 microns, ndipo madontho ang'onoang'ono ndi 10-60 microns.Popeza chinyezi chozungulira sichifika 100% RH, madontho amayamba kusungunuka nthawi yomweyo.Pakapita nthawi, madonthowo amakhala madontho * 1 a 0.5-12 ma microns.
Kuphatikiza pa kutsokomola, chifuwa chimatulutsa pafupifupi 3000 madontho amadzimadzi, omwe ali ofanana ndi madontho adontho omwe amapangidwa ndi munthu wabwinobwino akulankhula kwa mphindi 5 * 2 Kuthamanga koyambirira kwa madontho otulutsidwa ndi kuyetsemula ndikwambiri, pafupifupi 100m/s. kotero imatha kufalikira mpaka mita zingapo Madontho opangidwa ndi kupuma kwanthawi zonse amathanso kukokedwa ndi anthu omwe ali pamtunda wa mita imodzi*4.
Chofunikira cha aerosol ndi mawu omwe amatanthauza tinthu tating'ono tolimba kapena tamadzi timene timayimitsidwa mumlengalenga.PM2.5 yodziwika bwino ndi aerosol yokhala ndi m'mimba mwake(kwenikweni ndi aerodynamic m'mimba mwake) zosakwana ma microns 2.5.Madontho onyamula ma virus ambiri akatuluka m'thupi la munthu, amatuluka nthunzi, amachepera kukula, ndipo gawo lina lidzagwa pansi.Gawo loyimitsidwa mumlengalenga lipanga aerosol yonyamula kachilomboka.
Kukula kwake kukakhala kocheperako, m'pamenenso mpweyawo umatha kuyenda mtunda waukulu chifukwa tinthu tating'onoting'ono tating'ono tating'ono tating'ono tating'ono tating'onoting'ono sititera mwachangu, timapita kutali ndikuyenda kwa mpweya.
Mwachitsanzo, aerosol yokhala ndi kachilombo kokhala ndi mainchesi 100 imatera mumasekondi 10, aerosol ya ma microns 20 idzatera mumphindi 4, ndipo aerosol ya ma microns 10 idzatera mphindi 17.Komabe, ma aerosols a 1 micron ndi ang'onoang'ono adzayimitsidwa mumlengalenga pafupifupi "kwamuyaya" * 5 (kuposa maola angapo, kapena masiku angapo).Khalidweli limapangitsa kuti aerosol omwe amanyamula kachilomboka athe kutenga kachilomboka kwa nthawi yayitali.
Kodi Zosefera za Air Purifier Zimagwira Ma Aerosol Akukula Kwa Virus?
Mwachidule: ambiri adzachita, komabe, ena adzasefa bwino kwambiri ndipo ena amasefa bwino.Ena amasefa mwachangu ndipo ena amasefa pang'onopang'ono.Kwa ogwiritsa ntchito wamba, muyenera kusankha imodzi yokhala ndi kusefera kwakukulu komanso kuthamanga kwa kusefera.
Chidziwitso: [Kuchita Bwino Kwambiri] kumatanthauza kuti kachilomboka kamakhala ndi mwayi wogwidwa podutsa muzosefera.[Kuthamanga kwa kusefa mwachangu] kumatanthauza kuti ma virus ambiri amadutsa muzosefera pakanthawi kochepa, ndipo onse ndi ofunika chimodzimodzi.Ogwiritsa ntchito novice nthawi zambiri amangowona [kuchita bwino kwambiri] ndikunyalanyaza [kuthamanga kwa kusefera mwachangu], zomwe zimabweretsa: pang'ono, ma aerosols omwe ali mumlengalenga amagwa pang'onopang'ono, zomwe zimayambitsa matenda atsopano.
(1) ZomweZosefera zili ndi mphamvu zambiri?
Malinga ndi muyezo waku America wa ASHRAE 52.2, kusefa kwa zinthu zosefera zomwe zimagwiritsidwa ntchito popumira mpweya zimagawidwa motere (MERV1-MERV16):
Sefayi yoposa MERV16 ndi HEPA.Zosefera zomwezi zimakhala ndi kusefera kosiyanasiyana kwa ma aerosols amitundu yosiyanasiyana.Malinga ndi chithunzi chomwe chili pansipa, titha kuwona kuti chosefera sichimasefera bwino ma aerosols pamlingo wa 0.1 micron mpaka 1 micron.Komabe, zinthu zosefera za MERV16 ndi magiredi apamwamba a HEPA Chosefera * 11 chimakhala ndi zotsatira zabwino zosefera pamitundu iyi ya aerosol, ndipo kuchuluka kwa kuchotsa kumatha kufika 95% kapena kupitilira apo.
Choncho, palibe kukayika kuti owerenga ayenera kusankha azosefera pamwamba pa MERV16 - HEPA fyuluta chinthu.
Komabe, pakadali pano, zinthu zaku China zoyeretsa mpweya siziyenera kuyika chizindikiro cha kusefera.Zosefera zoyenera (zosefera pamwamba pa giredi MERV16) zili ndi mawu awa:
"H13 / H12 / E12 fyuluta chinthu / fyuluta / fyuluta chophimba / fyuluta pepala"
"99.5% (kapena 99.95%) kusefa kwa 0.3μm micron particles/aerosols"
anthu amafunsanso zosefera za DO HEPA zimateteza ku COVID
(2) Zomwezoseferaali ndi liwiro losefera kwambiri?
M'malo mwake, izi sizimangofunika kukana kotsika kwa gawo la fyuluta, komanso zimafunikira mpweya waukulu wa fan.Kuthamanga kwachangu kwa sefa kumatanthawuza kuti ma aerosol omwe ali ndi kachilomboka amakhala mlengalenga kwakanthawi kochepa, ndipo amatengedwa ndi sefa nthawi yomweyo, kutsatira malamulo awa:
Avereji ya nthawi yoti ma aerosol okhala ndi ma virus azikhala mumlengalenga ∝ voliyumu yachipinda/CADR
Ndiko kuti, kukula kwa CADR ya air purifier, kufupikitsa nthawi yomwe aerosol imakhalabe mumlengalenga.
Kuti tipereke chitsanzo chosavuta, m'chipinda chogona cha 15 masikweya mita (2.4 mita m'mwamba), kutengera mpweya wabwino wa chipinda cha 0,3 pa ola, nthawi yapakati kuti ma aerosol onyamula ma virus azikhala mumlengalenga ndi maola 3.3.Komabe, ngati choyeretsa mpweya chokhala ndi CADR=120m³/h chiyatsidwa m’chipindacho, nthawi yapakati yoti madontho adontho azikhala mumlengalenga adzachepetsedwa mpaka mphindi 18 (ngati zitseko ndi mazenera atsekedwa).
Mwachidule: Kwa ma aerosols a virus, kuchuluka kwa kusefera kwa zinthu zosefera kumakwera, kukweza kwa CADR ya air purifier, komanso kuyeretsa bwino.
Nthawi yotumiza: Dec-23-2022