空氣清新機 邊隻好

Philips Coway made in korea 都好啲. 宜家個啲唔得.

唔洗搞, 部機照行到
我直接RESET FILTER個更換%

會唔會係佢出題示要你清潔，先至可以reset

而家有時間寫多D

上面位巴打係咁問我知唔知HEPA係咩，我唔知佢想反駁我D咩，不過佢對MPPS呢樣野完全冇反駁過，不如佢直接講出佢嘅理解

Q1. 咩係HEPA 濾網？

https://en.wikipedia.org/wiki/HEPA
HEPA (/ˈhɛpə/, high-efficiency particulate air) filter,[1] also known as high-efficiency particulate absorbing filter[citation needed] and high-efficiency particulate arrestance filter,[2] is an efficiency standard of air filters.[3]
Filters meeting the HEPA standard must satisfy certain levels of efficiency. Common standards require that a HEPA air filter must remove—from the air that passes through—at least 99.95% (ISO, European Standard)[4][5] or 99.97% (ASME, U.S. DOE)[6][7] of particles whose diameter is equal to 0.3 μm, with the filtration efficiency increasing for particle diameters both less than and greater than 0.3 μm.

https://www.philips-da.com.tw/blogs/product-tips/136499
HEPA濾網全名為High-Efficiency Particulate Air ，即高效率空氣微粒過濾，是一種標準，而不是濾網種類。HEPA標準由美國能源部訂定，不論材質，能有效過濾大於等於0.3微米（µm）的空氣微粒，過濾效果達到99.7%以上，才能稱為「HEPA濾網」

https://tw.sharp/faq/view/348
HEPA為一種標準而不是名稱，依據美國能源部的定義：能夠把超過 99.7%，大小為0.3微米（μm）的懸浮微粒擋下來的濾網，不論濾網是紙、不織布或玻璃纖維製成的，只要過濾效率符合這個數值，都可以稱作 HEPA濾網

我完全唔明HEPA有咩難理解，不如請佢直接解釋

Q2. 點解HEPA係睇0.3微米？

https://www.epa.gov/indoor-air-quality-iaq/what-hepa-filter
The diameter specification of 0.3 microns corresponds to the worst case; the most penetrating particle size (MPPS). Particles that are larger or smaller are trapped with even higher efficiency. Using the worst case particle size results in the worst case efficiency rating (i.e. 99.97% or better for all particle sizes).

https://www.sanalifewellness.com/blog/true-hepa-vs-hepa-filter-whats-the-difference
A HEPA-type filter is genuinely an inferior version of the True HEPA. Unfortunately, due to trademarking, a HEPA-type filter can be sold under pretenses to trick consumers into believing that the HEPA-type is close to or as effective as the True HEPA.
A HEPA-type filter only has an efficiency rating of 99%, and they are effective at capturing 0.2 microns sized particles. While this may look more impressive (compared to the 0.3 effectiveness of the True HEPA), it is not.
The 0.3-micron particle is the MPPS (most challenging particle to capture), and through the technology of the True HEPA, the 0.3 micron-sized particles bounce into particles of 0.1 microns in size. They can capture these smaller particles (usually viruses and bacteria such as the common flu virus).

因為0.3係MPPS，最難濾嘅大細，係代表worst case

Q3. HEPA濾唔濾到0.3微米以下？

https://en.wikipedia.org/wiki/HEPA
with the filtration efficiency increasing for particle diameters both less than and greater than 0.3 μm.

https://www.sanalifewellness.com/blog/what-is-the-most-penetrating-particle-size-mpps
An MPPS of 0.3 microns is the worst case; ironically, many filters are more effective at capturing particles smaller or larger than this, but a 0.3 micron particles regularly gets by basic filtration. Using 0.3 microns as the MPPS measures the worst-case efficacy of the filter.

https://www.epa.gov/indoor-air-quality-iaq/what-hepa-filter
The diameter specification of 0.3 microns corresponds to the worst case; the most penetrating particle size (MPPS). Particles that are larger or smaller are trapped with even higher efficiency.

https://smartairfilters.com/en/blog/can-hepa-filters-capture-nanoparticles/
Researchers at the University of Minnesota tested this question with weaker fiberglass furnace filters and higher-grade HEPA filters. In their test, they shot particles of silver from 3 to 20 nanometers at the filters.
The results showed that filters captured 99.99% of particles smaller than 5 nanometers.
Their results demonstrate that the miracle of Brownian motion isn’t just a HEPA thing. This principle works for any fiber filter, including furnace filters (also called “MERV filters”). In the graph above, the MERV filters captured about 99% of particles at 10 nanometers and 99.9% at 4 nanometers. That’s impressive for a cheap fiber filter.

產品規格係講緊喺嗰個粒子大細有幾多percent，而唔係過濾粒子大細下限
最後一條link係講有D廠商用低過HEPA 0.3微米去誤導人，以為越細越勁

唔係, 我有時都RESET到

Cls ，重置要睇運

carbon 吸滿會放毒 呢個真係唔知。有冇資料可以睇下？
不過我未等佢著燈都已經換咗

https://hcho-removal.com.hk/knowledge/天然方法除甲醛-活性碳篇/

其實上網好多有講.

thxthx

有行貨

https://www.panasonic.oa.hk/chinese/products/air-purification-products/air-treatment/f-jpw50h.aspx

放冷氣機個空氣淨化模式算

幾好用
吹個範圍都幾大
好涼
暖風都好暖
不過空氣清新我就覺得冇乜特別
因為我又買多左部areamax最大果部

本身有部細嘅BMOLA放係床邊
去味一流

前幾日再買多部BM20放廳，講唔出有咩特別，但感覺係舒服左
黎緊會養貓，應該會見真章

請問如果除甲醛邊部最好？
消委會好似話係Philips
仲推介埋屌米

依隻三合一細細部擺喺間房度點睇？
https://www.jbshop.com.hk/products/dtex-智能三合一抽濕機

小米