Air purifier?

[blues7]

Still unable to decide getting just Air purifier or Air purifiers with Humidifying functions.

Humidifier more for Aircon rooms which tend to be too dry

 

[Asure7]

IMO, the humidifier in Sharp's air purifiers isn't really that effective, given that it uses natural vaporization. I'd reckon that it doesn't increase the moisture in the air much, maybe just a very small area around the purifier.... the main purpose is to reduce static so that the dust will not stick to surfaces like the wall/furniture (likely due to the negative ions), thus helping the purifier to suck them in.

If you need a humidifier because of reasons like dry skin, rhinitis etc, consider getting a separate humidifier with those water mists.


I'd think most people use air purifiers in aircon room?
If open windows, the air purifier probably need to be constantly in high cleaning mode since "dirty" air from outside keep coming in....
If close windows and door ... will be too stuffy isn't it ?

In the case of Sharp, I feel that the deciding factor is whether you want a HEPA-10 or HEPA-13 filter. For the current models, all those without humidifying function come with HEPA-10, while only those with humidifying functions come with HEPA-13 filters. FU-A80 is really powerful though. Even though using HEPA-10, I think it's still better, if not on par, with KC-A50 in terms of cleaning efficiency, due to the high air flow rate. But i think A80's filter may need to be replaced faster.

 

[WussRedXLi]

Hi Asure,

Hey, you are correct. A80 is H10. So you can times 0.85 to the airflow for a better picture as H10 is 85% @ 0.3 microns. As I posted before, particle size that would be cleaned would still be the same, ie can clean 0.1 microns as well etc.

Air Flow (Max / Med / Low) (m3/hour)
480 / 300 / 120

Effectively it would be 480 * 0.85 = 408


For KC-A50, H13 which is 99.97 @ 0.3 microns.
Air Flow (Max / Med / Low)
Without Humidifying (m3/hour)
306 / 216 / 60

With Humidifying*1
396 / 240 / 120

 

[WussRedXLi]

And yes, the natural vaporization of water from the humidifier wick in the Sharps is not say v effective. It's like air coolers, the drier the air the faster/better it works. Confirm not as power as the piezoelectric atomizers found in the dedicated humidifiers lah.

 

[mikeeeey]

Yep, the Sharp models that have intakes at the back need to leave at least a 3 inch gap.

Ooh 3 inch gap will be enough? I have a A28 in another room, tuck inside a shelf. More than 3 inches of gap but i always feel that its not optimal. Glad to know 3" is fine

 

[Asure7]

my 7 year old S51 takes in air from the front, but manual still say leave at least 60cm space from the wall. Otherwise wall will turn black

I think 3" a bit too little, difficult to suck in air from across the room.

 

[WussRedXLi]

Ooh 3 inch gap will be enough? I have a A28 in another room, tuck inside a shelf. More than 3 inches of gap but i always feel that its not optimal. Glad to know 3" is fine

Well for me is 3 to 4 inch. The aircon provides the main circulation in the room.

 

[WussRedXLi]

So yeah, there were quite a fair bit of heavy showers/thunderstorms around the region for the past week. Plus cloud seeding in Indonesia (thousands of tons of silver iodide). Plus additional thousands of manpower to put out the fires + Bambang's shoot on sight order for the fire starters.

Result?



416 fires detected across
Sumatra

The Jakarta Post, Jakarta | Archipelago | Mon, March 24 2014, 5:11 PM





At least 416 fires in peatland and forested areas were recorded on Monday across Sumatra with Riau having the largest number of hotspots, totaling 294, according to surveillance data from the Terra satellite.

Of the total fires in Riau, 56 were detected in Rokan Ilir regency, followed by Bengkalis with 51 fires, Siak with 46, Indragiri Hulu with 36, Pelalawan with 33, Dumai city with 27 and the others in other regencies, the Riau Haze Mitigation Task Force said as reported by Antara news agency.

The task force members, in cooperation with representatives from the Riau Disaster Mitigation Agency (BPBD), would continue in their efforts to fight the fires, which have caused thick, choking haze not only in local cities but also out in neighboring countries Singapore and Malaysia, BPBD head Said Saqlul Amri said.

The authorities also plan to intensify law enforcement measures against perpetrators who are conducting rampant land-clearance activities, primarily with slash-and-burn methods, which have caused the fires.

Since the reoccurrence of severe haze in Riau this year, the Riau Police had received 44 reports of forest and peatland fires in nine regencies and municipalities across the province, Riau Police chief Brig. Gen. Condro Kirono said.

He added that their investigations into five of the 44 reports were still at a preliminary stage, while 16 other cases had progressed to more in-depth investigation. (yln)

 

[WussRedXLi]

You can almost see part 2 forming.

Wind direction change due to start in 1 week's time.

Motherload lai liao....

 

[s3856]

Went to BD at Sengkang, see EurpAce stock still available, rest still out of stock even the display is gone.

 

[WussRedXLi]

Went to BD at Sengkang, see EurpAce stock still available, rest still out of stock even the display is gone.

NAP501 also pulled out from the display @ Robinsons. Pre-order also no more.

 

[Tuakong]

Just delivered...very quiet in Auto mode
Qoo10 - SAMSUNG AX020FCVANDD / AX037FCVAUWD HEPA Filter /Anti-Virus / Air puri... : Home Electronics

 

[mikeeeey]

Went to BD at Sengkang, see EurpAce stock still available, rest still out of stock even the display is gone.

I think better to get more reputable brands like honeywell, sharp, novita etc.

 

[WussRedXLi]

Haze Reappears in Pekanbaru | Enviro | Tempo.Co :: Indonesian News Portal

Wednesday, 26 March, 2014 | 13:32 WIB

Haze Reappears in Pekanbaru

Zoom Out Zoom In Normal


TEMPO.CO, Pekanbaru - Dense haze from originated from forest fires reappears in Pekanbaru, reducing visibility to 4,000 meters.

Nevertheless, flight activities in Sultan Syarif Kasim II airport continues to run normally. "Flight activities are normal. Current visibility level is 4,000 to 5,000 meters," Duty Manager Ibnu Hasan told Tempo on Wednesday, March 26, 2014.

According to Ibnu, flights will be disturbed if the visibility level has reached below 1,000 meters.

Pekanbaru Meteorology, Climatology, and Geophysics Agency, said that there is only been light rain in Riau in over the last three days. This condition is caused by tropical Cyclone Gillian that occur over the southern Indian Ocean.

Drought will potentially cause hot spots to reappear in several areas. "However, it will not last long. We have forecasted that medium-intensity rain will pour tomorrow," Ibnu said. Said Saqlul, Chief of the Riau Disaster Mitigation Agency, said that the NOAA 18 satellite has spotted 41 hot spots in Riau; 12 in Rokan Hilirn, 11 in Bengkalis, 13 in Meranti, seven in Dumai, five in Siak and three in Pelalawan.

RIYAN NOFITRA

 

[WussRedXLi]

Today in Medan...

6:30 AM
25.0 °C
24.0 °C
94%
1008 hPa
0.9 km

SSW
5.6 km/h / 1.5 m/s
Smoke

 

[WussRedXLi]

Info

Cabin Air Q&A

Q5: What is the smallest particle size that the cabin air filter element can remove?

Cabin air filters remove particulate contamination using three basic mechanisms of filtration;
Direct Interception, Inertial Impaction, Diffusional Interception

In practice, these three capture mechanisms will combine to produce a characteristic of efficiency versus particle size. This characteristic curve shows that the minimum capture efficiency occurs at about 0.1 to 0.3 micron particle size, which is defined as the "Most Penetrating Particle Size", or MPPS, for the filter medium and conditions applicable to a fine HEPA cabin air filter. For particles both larger and smaller than the MPPS, the capture efficiency is higher.


Top

Q6: Will the cabin air filters remove the SARS and Avian flu virus?

Yes, provided that they are ‘true HEPA’, microbially validated to 99.999% microbial removal. These are effective at removing viruses (refer to Q2).
Following standard practices used in the healthcare and pharmaceutical industries, Pall has performed challenges of its HEPA cabin air filters using the bacteria Brevundimonas diminuta and Bacillus Subtilis. The bacteria removal efficiency has been measured to be greater than 99.999%. Similarly, using the MS2 Coliphage virus, the virus removal efficiency has been measured to be greater than 99.9995%.

In response to recent airline requests, we can advise that the MS2 coliphage virus is approximately 4 times smaller than the corona virus which scientists believe is the cause of the disease, Severe Acute Respiratory Syndrome (SARS). The corona virus particles are about 0.080 to 0.160 micron (80 to 160 nm) in size.
The Avian flu virus, H5N1 current strain, is approximately 0.1 micron (100 nm) in size

Also note that anti-microbial and biocide treatments that rely on direct surface contact are NOT EFFECTIVE on aircraft cabin air filter elements.

 

[Zabiyaki]

everywhere still oos?

 

[NWT1978]

everywhere still oos?

yes unless u try online but take time deliver...

Sharp next mth then came...

 

[WussRedXLi]

I pre-ordered (full payment) the Novita NAP501. ETA 30th April.

$279 with 1 FOC True HEPA replacement filter (think it's worth 109).

Interestingly, it's damn quiet.....but I tried both at BD Taka and Robinsons in the stores so ambient noise is a bit high. But definitely it's day and night from the Honeywells, no doubt about it. 250m^3/h or 147 CFM in Turbo mode. Not too shabby.

Will know when I take delivery.

 

[Porsche918 Spyder]

nobody dies from haze .