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Air purifier? - Part 2

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Old 26-03-2019, 01:20 PM   #2776
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When using air purifier, is it advisable to close window? But if sleep at night and too low SES to use air-con, how can close window just to use air purifier? Close window means no ventilation.
Leave a 5mm gap at the window so that there is some incoming/outgoing wind, in addition to the door gaps or MBR toilet door/window helping the exchange.

This keeps CO2 concentration from building up > 2000ppm and making you feel irritable in the morning or have headaches.

Need to close the windows. The next question is, can you tahan the heat even with a fan. I'd bet 99.9% of the pax here cannot do that without AC.
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Old 26-03-2019, 01:21 PM   #2777
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I not expert la.

I don’t have either.
So what's the CADR for formaldehyde with the green filter for other stuff? Xiaomi never give any figures, they no test? Basically a lot depends on the filter, the AP model is just a part of the "engine".

Maybe need to go dig the private agencies (shanghai, beijing, GZ) and see if they got side info.
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Old 26-03-2019, 01:46 PM   #2778
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Some ex info that i could dig out. In short, very few, if not none of the regular air purifiers are very effective if you are talking about a sudden VOC future "attack" aka accident, that is similar to 2013's PSI 401 kind of intensity, just that instead of Particulate matter, we change it now to VOCs.











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Old 26-03-2019, 01:48 PM   #2779
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Oh....found a snippet for Xiaomi.

67 m3/hr for 甲醛 formaldehyde.




Not sure the above Philips model is which one.
Philips AC8622 Rmb 7999 on official store. rmb 5666 other sellers

https://detail.tmall.com/item.htm?sp...=1&abbucket=12
https://item.taobao.com/item.htm?spm...cket=12#detail

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Old 26-03-2019, 01:52 PM   #2780
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Seen this at Robinson's before. Super big. Not sure about Formaldehyde performance though.


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Old 26-03-2019, 02:02 PM   #2781
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The 352 X83C Plus CADR for Formaldehyde and price/performance ratio is very difficult to beat.

That said, i think at this moment, we can just take the green Xiaomi formaldehyde filter to be 67 m3/hr thereabouts in the Xiaomi 2S.

So 3 units is sufficient for a sudden "attack" for VOC. All pax move into the MBR to sleep, all 3 units move there.
Else 2 units in 2 bedrooms normal days would be nice and doable as well. You can shift 2 units into the MBR in an emergency.

$300 for 134 m3/hr CADR 甲醛 performance?
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Old 26-03-2019, 02:33 PM   #2782
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The above Xiaomi tested is the AP version 2.

Unfortunately i believe it is using the green filter already. ie 67 m3/hr for formaldehyde performance is the max.

Sauce of the big round-up :
http://jd.zol.com.cn/568/5686935.html

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Old 26-03-2019, 02:38 PM   #2783
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One thing to take note is about young kids.

They are especially susceptible to being scarred. And they have a long journey ahead.
Madhatter is at the helm now.

If you scar a 50-70 yr old lungs, screw the brains, IQ, cognitive, no real biggie. Of coz if go hospital, it is gonna have a financial cost and toll.

If you screw up your 5-6 year old kid, a FT like CECA/Pinoy kid/teen/adult is more than willing and hungry to take over. And there is an endless supply.

For Your personal family consideration.

Personally if i were to be living in Punngol/Pasir Ris/SK, i'd definitely get a unit of the 352 X83C Plus even if that means i forgoing to restaurants for a year or forgoing 1 pax's annual holiday budget.
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Old 26-03-2019, 02:43 PM   #2784
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Bonus pictures





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Old 26-03-2019, 04:26 PM   #2785
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I have 5 Xiaomi pros. One at each room / area. Decent coverage running at acceptable No smell when operating during the recent burning hazy occasions at night.

Didn’t really closed all windows. Most of the windows closed except kitchen - left open slightly. Still able to keep pm readings down and no smell noticed in living hall and bedrooms.

There’s no hard and fast rule. Sometimes have to close all windows. Sometimes you leave slightly open still able to achieve what you want.

Wah lan, you have 2500 m3/hr CADR for particulate matter and possibly ~ 500 m3/hr for formaldehyde.

And by guesstimation, around 500-1000 m3/hr CADR for the various VOCs produced at sungai kim kim. Coz all the others are easier to be adsorped.

You are a good parent. People, be like Lucky177.
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Old 26-03-2019, 04:56 PM   #2786
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For those using Xiaomi 2S, do you all leave it on auto mode or manual? Manual mode die die must use the Mi Home app right?
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Old 26-03-2019, 05:05 PM   #2787
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I just got Xiaomi Air Purifier Pro with OLED Display - so far so good!
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Old 26-03-2019, 05:20 PM   #2788
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Forgot one chemical found later, hydrogen cyanide. Luckily, this is adsorped even easier than formaldehyde by AC.

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Old 27-03-2019, 12:41 AM   #2789
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I just got Xiaomi Air Purifier Pro with OLED Display - so far so good!
Sic $239 on lazada... not sure best deal or not
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Old 27-03-2019, 06:10 AM   #2790
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Was just looking at the 352 X83C Plus and forgot that they actually have a X50.

So this is also a decent choice for those who wants something to counter the VOC risk for their kids.


Realised that they are pricing the X50 competitively against the Xiaomi Pro.
Keypoints
Particulate Matter CADR = 500m3/hr
Formaldehyde CADR = 150m3/hr which is double that of the Xiaomi

The noise SPL is probably around the same as the Xiaomi Pro, though it has 5 speeds and can be manually set on the unit directly (in addition to through the app and also RF remote control). Fan speed 2 is 220 m3/hr and 39dBA, more than silent enough even for light sleepers and still giving a good airflow.. Max SPL @ 500 m3/hr is 59dBA, quite a fair bit less noisy than the Pro @ 66dBA 500m3/hr or even the Xiaomi 2S (66dBA @ 310 m3/hr).

Another important point is 35W power consumption (@ 500m3/hr CADR???), which is extremely good and extremely efficient. In fact it sounds too good to be true, it's even better than the Sharps and Samsungs (already very very efficient). But do verify on this aspect and see if it's a legit figure, seems too good to be true.
This actually makes a difference in real life, coz you are going to be operating the AP like your AC, something like 8-10hrs daily, over a period of many years.

The formaldehyde capacity (look at the CCM figure) is good too, so it can be used for quite a while.

Price 1199rmb.
Filter replacement 299rmb.


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