Kev txhais lus: Kev Ntsuam Xyuas Kev Ua Tau Zoo ntawm Nruab Nrab-Efficiency Cotton Pocket Lim (F5-F9)
Qhov ua tau zoo ntawm lub lim yog nws qhov kev ua haujlwm tseem ceeb, cuam tshuam ncaj qha rau huab cua purification efficiency thiab cov nqi khiav haujlwm. Hauv qab no yog cov lus piav qhia ntxaws txog qhov ua tau zoo ntawm F5-F9 qib nruab nrab-ua haujlwm zoo paj rwb hnab tshos lim:
1. Cov qauv kev faib ua haujlwm zoo (EN779/ISO 16890)
Filter efficiency yog cais raws li qhov muaj peev xwm ntes tau qhov teeb meem, raws li hauv qab no:
| Qib | EN779 Txuj (Txoj Cai) | ISO 16890 Tus Qauv (Tam sim no) | Tej kev siv |
|---|---|---|---|
| F5 | 40-60% ASHRAE efficiency | ePM10 50-65% | Qhov yooj yim qhov cua hauv cov tsev ua haujlwm, khw muag khoom |
| F6 | 60-80% ASHRAE efficiency | ePM10 65-80% | Kev xav tau kev huv huv huv hauv tsev kawm ntawv, chav sib tham |
| F7 | 80-90% ASHRAE efficiency | ePM2.5 50-65% | Tsev kho mob, chaw kuaj mob, kev cob qhia hluav taws xob |
| F8 | 90-95% ASHRAE efficiency | ePM1 50-65% | Pharmaceuticals, kev ua zaub mov, cov ntaub ntawv chaw |
| F9 | 95% + ASHRAE efficiency | ePM1 65-80% | Ua ntej- lim rau chav huv, plua plav- kev cob qhia pub dawb |
Ntsiab Lus:
EN779 tus qauv yog raws li ASHRAE 52.2 xeem txoj kev, ntsuas "plua plav chaw ua haujlwm."
ISO 16890 tus qauv tsom ntau dua rau kev ua kom pom tseeb rau qhov tiag -cov khoom siv hauv ntiaj teb (PM10, PM2.5, PM1), ua kom ze dua rau qhov tseeb ib puag ncig.
2. Efficiency vs. Particle Size
Kev ntes cov txiaj ntsig ntawm cov qib lim sib txawv rau qhov sib txawv ntawm qhov ntau thiab tsawg yog raws li hauv qab no:
| Lim Qib | >5 µm Particles | 1-5 µm Particles | <1 µm Particles |
|---|---|---|---|
| F5 | High (>80%) | Nruab nrab (50-70%) | Tsawg (<30%) |
| F6 | High (>90%) | Nruab nrab-High (70-85%) | Tsawg (<40%) |
| F7 | High (>95%) | Siab (80-90%) | Nruab nrab (50-70%) |
| F8 | High (>98%) | Siab (90-95%) | Nruab nrab-High (70-85%) |
| F9 | High (>99%) | Siab (95-98%) | Siab (85-95%) |
Analogous piav:
IbF5 limyog zoo li "coarse sieve," haum rau lim cov khoom loj (xws li, plua plav, paj ntoos).
IbF9 limzoo li "sieve zoo," muaj peev xwm cuam tshuam cov khoom me me (piv txwv li, pa luam yeeb, cov kab mob cab).
3. Cov ntsiab lus tseem ceeb cuam tshuam rau kev ua tau zoo
Lim Media:
Paj rwb lim: Ntuj fibers, hygroscopic heev, haum rau qhuav ib puag ncig tab sis nquag pwm nyob rau hauv cov av noo.
Synthetic fibers (piv txwv li, polyester): Moisture-resistant, corrosion-resistant, zoo tagnrho rau qhov chaw siab -cov av noo (xws li, cov chaw tsim khoom noj khoom haus, pas dej da dej).
Lim Qauv:
Pocket designs nce pom cheeb tsam (piv txwv li, 6-12 hnab tshos) kom txo tau cov airflow tsis kam thiab boost efficiency.
Airflow Velocity:
Cov huab cua ntau dhau tuaj yeem ua rau cov khoom nkag mus rau hauv lub lim; pom zoo tshaj tawm yog0.25-1.5 m/s.
Kev tu ntau zaus:
Kev hloov lim dej tsis tu ncua tswj kev ua haujlwm; clogging txo efficiency ntau tshaj 30%.
4. Sib npaug Efficiency thiab System Cov Nqi
Tus nqi pib: F5-F6 lim yog tus nqi qis (~$5-15 txhua) tab sis yuav tsum tau hloov ntau zaus.
High - Tus Nqi Ua Tau Zoo: F8-F9 lim yog kim (~ $ 20-50 txhua) tab sis muaj lub neej ntev (6-12 lub hlis).
Cov tswv yim pom zoo:
Ob -Stage Filtration: Muab F7+F9 lim- siv F7 los ntes cov khoom loj ua ntej, tom qab ntawd F9 kom huv si sib sib zog nqus, txuas ntxiv HEPA lim lub neej.
Zog Optimization: Xaiv qis- pib- cov lim lim (piv txwv li, F5-F7) kom txo cov kiv cua siv zog los ntawm 10-20%.
5. Cov txheej txheem ntsuas kev ua tau zoo
Kev kuaj mob:
Simulate tiag-lub ntiaj teb tej yam kev mob nyob rau hauv ib tug cua qhov av uas siv cov qauv kuaj plua plav (piv txwv li, KCl, DEHS).
Ntsuas particle concentrations ua ntej thiab tom qab lub lim kom xam efficiency.
Field Validation:
Monitor filter resistance using a differential pressure gauge; efficiency may decline if resistance rises abnormally (>250 Ib).
Cov ntsiab lus thiab cov lus pom zoo
High -Kev Xav Tau Kev Ua Tau Zoo: Choose F8-F9 (e.g., in pharmaceuticals, electronic workshops) to ensure >85% PM1 pom efficiency.
Tus nqi - Cov Kev Xav Tau Zoo: Xaiv rau F5-F7 (xws li, hauv khw malls, chaw ua haujlwm) kom sib npaug ua haujlwm thiab hloov zaus.
Humid Ib puag ncig: Muab cov khoom siv hluavtaws ua ntej kom tsis txhob muaj pwm loj hlob hauv cov lim paj rwb.
Koj puas xav tau kev tshuaj xyuas ntxiv ntawm cov ntawv thov qib tshwj xeeb hauv kev lag luam tshwj xeeb?