TS EN ISO 16890 Kev faib tawm cov lim cua raws li cov teeb meem me me (PM), uas ua rau nws tuaj yeem pom kev sib txuas ncaj qha rau peb kev noj qab haus huv thiab huab cua paug. Tus qauv kuj tseem ua rau nws muaj peev xwm los npaj cov huab cua sab hauv tsev (IAQ) nyob rau hauv ib txoj kev sib txawv kiag li dua li ua ntej.
Kev faib tawm ntawm huab cua lim
Rau lub lim kom tau muab cais tawm hauv ib qho ntawm peb chav PM, ib qho kev sib cais ntawm tsawg kawg yog 50 feem pua ntawm cov khoom seem yog xav tau. Yog tias lub lim tsis dhau 50 feem pua ntawm kev sib cais hauv ib qho ntawm PM feem, lub lim tau txais cov chav lim dej hauv pawg Coarse ( lim lim ). Lub degree ntawm filtration yog qhov nruab nrab nrog thiab tsis muaj tus nqi zoo li qub. Cov lim kuj tau muab ib feem pua txuas rau PM pawg nyob rau hauv uas lub lim tuaj yeem faib nws tus kheej. Qhov feem pua yog sib npaug mus rau ib qho txawm 5 feem pua. Hauv qab no yog cov chav lim sib txawv uas lub lim tuaj yeem raug muab (30 chav sib txawv thiab Coarse).
Filtering efficiency rau cov chav lim sib txawv
Piv txwv 1
- 63 feem pua ntawm PM1 feem
- 70 feem pua ntawm feem PM 2,5
- 91 feem pua ntawm PM 10 feem
Cov lim tuaj yeem tswj tau ntau dua 50 feem pua ntawm kev sib cais hauv feem PM1 thiab yog li muab ePM1, feem pua yog sib npaug mus rau 5 feem pua. Cov chav lim dej dhau los ua: ePM1 60 feem pua
Piv txwv 2
- 15 feem pua ntawm feem PM1
- 26 feem pua ntawm cov feem PM 2.5
- 64 feem pua ntawm cov feem PM 10
Lub lim tuaj yeem tswj tau tsawg dua 50 feem pua ntawm kev sib cais hauv PM1 thiab PM 2.5 feem. Nws tau txais txiaj ntsig ePM10, qhov feem pua yog sib npaug mus rau ib qho 5 feem pua. Cov chav lim dej yuav yog: ePM10 60 feem pua
Dab tsi tshiab?
Yav dhau los tus qauv EN 779 ntsuas cua lim los ntawm G1-F9 thiab qhov ntsuas kev ua haujlwm rau M5-F9 yog raws li qhov nruab nrab qhov loj me ntawm 0.4 µm (micrometers). TS EN ISO 16890 hloov pauv cov ntsuas ntsuas raws li cov khoom loj hauv peb qhov sib txawv qhov loj me PM1 (0.{{10}}}0 µm), PM2.5 (0.3-2.5 µm) thiab PM10 (0.{19}} µm). Tom qab ntawd lub lim tau muab cov chav lim dej hauv ib qho ntawm peb pawg no lossis muab faib ua Coarse (coarse filter).
Qhov sib txawv no txhais tau tias cov ntxaij lim dej uas yav dhau los muaj tib chav kawm raws li EN 779 tuaj yeem muab cov chav sib txawv raws li ISO 16890. Yog li tsis muaj kev sib piv ncaj qha lossis hloov pauv ntawm cov chav lim dej ntawm cov qauv sib txawv.
