Air purifier?

[Propanone]

Many people, including doctors, say that air conditioning is effective.

I respectfully disagree.

Did a test. 9000 btu/hr in a very small room of 2.7m x 3.6m (the new BTO bedrooms, small until kaopeh). SO the aircon FCU : room area ratio is extremely high. ie a lot of aircon fins/surface area for the room volume.

This is the bestest case scenario for aircon to make a difference.
Took nearly 1 hour to drop from 96 ug/m3 -> 72 ug/m3.....and likely not to go below 50 ug/m3 due to external loading. In a severe haze episode, it is likely not to reduce by much due to heavy external loading. And this is among the best case scenario, big aircon, small room. Ratio is good and advantage skewed towards the aircon.


And note : This is probably because the aircon compressor is running and there is condensation water formed on the heat exchanger fins, which aids in trapping the fine smoke particles with the air running over them. No water, no drop in PM2.5 concentration. You see the temperature on the thermo, you know already, it can drop from 30 deg down to 22 deg in 1 hour, it's a small room and big FCU. It cannot gun continuously for 12 hours, 24hrs, or in our recent case 48 hours high concentration (not much use also).....either it gets really cold (it can hit 17 deg C in my small room if external is not hot)or you risk getting the compressor uplorry.


Afte 11.46, ran air purifier for 8 minutes , 72 ug/m3 -> 1 ug/m3

For comparison, even 3M Filtrete eats it for breakfast. 20 minutes run only (though at lower concentrations)

.

Can clean to 3 microgram /m3 is quite amazing...

 

[Asakura]

Ordered ax40 on the 19sep from Daiso,noticed have tracking no two days back( at processing unit) wonder how soon will it reach

Chuseok Chuseok Chuseok

 

[Akai Ryu]

Attach 3M to ceiling fan blade got any use anot?

 

[kimsim]

I know they have excellent AC system... didnt know they have AP too...

Need to able to get replacement filter then worth it...

LOL such as ducted system can place with better hepa filter on inlet suction area, the rest can relaxing with better air system

 

[Asakura]

Daikin AP dunno is good or not.

http://www.gumtree.sg/a-air-conditi...tylic-air-purifiers/1001430569830910681064709

got a reseller here. ask him lor

 

[kimsim]

Attach 3M to ceiling fan blade got any use anot?

How you attach this?

 

[Akai Ryu]

How you attach this?

Thinking of experimenting half wrap at the blade where i notice most dust accumulate.

Insipire by this http://www.berriman-usa.com/images/cf_1.jpg

 

[kimsim]

Thinking of experimenting half wrap at the blade where i notice most dust accumulate.

Insipire by this http://www.berriman-usa.com/images/cf_1.jpg

Not really work.
Last week I did my hepa filter with PC fan :clap:

 

[WussRedXLi]

Thinking of experimenting half wrap at the blade where i notice most dust accumulate.

Insipire by this http://www.berriman-usa.com/images/cf_1.jpg

Too high a windspeed over the media fibre = useless. There is a limit.

 

[Akai Ryu]

K thanks...had some left over 3m trim so was thinking of trying :O

 

[purpleberry]

Not really work.
Last week I did my hepa filter with PC fan :clap:

At a glance, I thought you're drying underwear.

 

[chuanz]

LOL such as ducted system can place with better hepa filter on inlet suction area, the rest can relaxing with better air system

HEPA too restrictive for central HVAC. MERV 10-13 is enough...

 

[kimsim]

At a glance, I thought you're drying underwear.

LOL

But good for my office desk

 

[Working]

Anyone can help: HEPA is either made of glass fibre or PP (Taobao). I know glass fibres are dangerous when inhaled. Thus when we do customization, do we need to beware of it? PP do not seem as dangerous as glass fibre, but I am also expecting it to have the same structure, and permanence in the lungs. Just wanted to know how safe is customization, and how clean are the filters from Taobao. I don't want to blast a cloud of fine fibres at my kids on the first turn on.

 

[NWT1978]

New AP by Aztech

http://list.qoo10.sg/item/AZTECH-MT402-AZTECH-TIO2-PHOTOCATALYST/422748804

 

[WussRedXLi]

No....PP fibre risk is not the same as fibreglass when inhaled. I have done the research. Not the same risk and won't pose the same injury in the lungs even if they can't be taken out of our system. And don't worry, you won't inhale any fibres from the HEPA filters.

The crystalline and filament structure of the fibres used in HEPA filter is very different from fibre glass insulation. Which in turn is very different from asbestos, which we know is banned in most countries.

The risk from inhaling comes when there is say reno work, cutting of the stuff etc. The HEPA filter itself would filter the fibres etc.

I always air the TB HEPAs anyway for the first few hours in the AP, there is some slight smell, not very objectionable. A further few days of use would get rid of it completely.

 

[WussRedXLi]

The Dyson air purifier uses borosilicate material also.

 

[Working]

No....PP fibre risk is not the same as fibreglass when inhaled. I have done the research. Not the same risk and won't pose the same injury in the lungs even if they can't be taken out of our system. And don't worry, you won't inhale any fibres from the HEPA filters.

The crystalline and filament structure of the fibres used in HEPA filter is very different from fibre glass insulation. Which in turn is very different from asbestos, which we know is banned in most countries.

The risk from inhaling comes when there is say reno work, cutting of the stuff etc. The HEPA filter itself would filter the fibres etc.

I always air the TB HEPAs anyway for the first few hours in the AP, there is some slight smell, not very objectionable. A further few days of use would get rid of it completely.

Thanks for the quick reply as always!

 

[MIVEC525]

This one the best and most expensive....king of AP!
https://www.youtube.com/watch?v=cwMv1J0-JBQ&feature=youtu.be

 

[NWT1978]

This one the best and most expensive....king of AP!
https://www.youtube.com/watch?v=cwMv1J0-JBQ&feature=youtu.be

did u get it?