Air purifier?

Status
Not open for further replies.

WussRedXLi

Greater Supremacy Member
Joined
Jun 15, 2001
Messages
90,610
Reaction score
10,762
Think my 2 boxes of N95 masks might expire soon lol. Never even open before ~:s22:

The Amazon ones will expire mid 2018. Anyway for haze, you can use N95s even a few years after expiry. They have excellent sealing at the side capability (which surgical masks have next to nothing), and even at a huge 50% efficiency loss, you are at 120 ug/m3 -> 60 ug/m3, which is still decent.

You can also use them (non-expired ones) while travelling, wear them in an aircraft cabin together with a 70% alc 0.5% chlorhexidine hand sanitiser rub. I can almost guarantee that you won't kena any illness during your holiday or after you returned from one.

Pls don't use expired ones for HxNx or MERS 2 though.
 

WussRedXLi

Greater Supremacy Member
Joined
Jun 15, 2001
Messages
90,610
Reaction score
10,762
20 May 2015 PS
SP SERVICES LIMITED 22410xxxxx 89180xxxxx
S$105.67


18 Jun 2015 PS
SP SERVICES LIMITED 24010xxxxx 89180xxxxx
S$124.04

126.46 latest bill. So not much estimation errors etc.

DIY aircon cleaning + air purification really saves electricity for you. And you can include the cost of professional cleaning once every 3-6 months.
 

chuanz

Master Member
Joined
Nov 18, 2007
Messages
4,816
Reaction score
11
126.46 latest bill. So not much estimation errors etc.

DIY aircon cleaning + air purification really saves electricity for you. And you can include the cost of professional cleaning once every 3-6 months.

My bill double yours... :(
 

chuanz

Master Member
Joined
Nov 18, 2007
Messages
4,816
Reaction score
11
Whoa west side getting serious smoke!

1Hr PM2.5 concentration readings @ July 11, 2015 23:00

North: 23 ug/m3
South: 11 ug/m3
East: 17 ug/m3
West: 83 ug/m3
Central: 14 ug/m3

----------------------------

NEA corrected the fluke reading to
West: 17 ug/m3
 
Last edited:

WussRedXLi

Greater Supremacy Member
Joined
Jun 15, 2001
Messages
90,610
Reaction score
10,762
Last round of Westerly Wind Burst forecasted for Central/Eastern Pacific turns out to be true.

For sure, August onwards will be very interesting.

u.anom.30.5S-5N.png
 
Last edited:

plasticpistola

High Supremacy Member
Joined
Nov 1, 2006
Messages
37,515
Reaction score
1,590
The Amazon ones will expire mid 2018. Anyway for haze, you can use N95s even a few years after expiry. They have excellent sealing at the side capability (which surgical masks have next to nothing), and even at a huge 50% efficiency loss, you are at 120 ug/m3 -> 60 ug/m3, which is still decent.

You can also use them (non-expired ones) while travelling, wear them in an aircraft cabin together with a 70% alc 0.5% chlorhexidine hand sanitiser rub. I can almost guarantee that you won't kena any illness during your holiday or after you returned from one.

Pls don't use expired ones for HxNx or MERS 2 though.


Good to know! Else I was like about to buang them out liao~
 

plasticpistola

High Supremacy Member
Joined
Nov 1, 2006
Messages
37,515
Reaction score
1,590
126.46 latest bill. So not much estimation errors etc.

DIY aircon cleaning + air purification really saves electricity for you. And you can include the cost of professional cleaning once every 3-6 months.



How come so low ah your bill? Some more your ac like on for damn long hours rite? Plus all the APs!
 

WussRedXLi

Greater Supremacy Member
Joined
Jun 15, 2001
Messages
90,610
Reaction score
10,762
How come so low ah your bill? Some more your ac like on for damn long hours rite? Plus all the APs!

We do, eg during this weekend, 1 room was like 18hrs but at relatively warm 25.5 or 26 deh C during daytime. Night time switch on 1 or 2hrs colder (eg compressor on 100%) but sleeping time esp 3am or later will raise thermostat).

But generally i can feel got savings compared to last time. Last time nvr clean so much 150 160 peak during hot months. (That time got AP liao).

The APs dont suck much electricity $$, you can calculate.
 

plasticpistola

High Supremacy Member
Joined
Nov 1, 2006
Messages
37,515
Reaction score
1,590
We do, eg during this weekend, 1 room was like 18hrs but at relatively warm 25.5 or 26 deh C during daytime. Night time switch on 1 or 2hrs colder (eg compressor on 100%) but sleeping time esp 3am or later will raise thermostat).

But generally i can feel got savings compared to last time. Last time nvr clean so much 150 160 peak during hot months. (That time got AP liao).

The APs dont suck much electricity $$, you can calculate.


Your ac is inverter?

Mine non-inverter :(
 

tmkedmw

Banned
Joined
Feb 16, 2013
Messages
33,505
Reaction score
24,573
Riau warned about drought, hot temperatures
Arya Dipa, The Jakarta Post Mon, July 13 2015, 8:36 AM

Source: http://www.thejakartapost.com/news/2015/07/13/riau-warned-about-drought-hot-temperatures.html

The Meteorology, Climatology and Geophysics Agency’s (BMKG) Pekanbaru station has predicted that the prolonged drought currently hitting the Riau provincial capital will last until August this year and is calling on people to be extremely cautious about the hot temperatures.

“The extreme weather that has been hitting Riau is predicted to end in September,” the station’s data and information section head Slamet Riyadi said in Pekanbaru on Saturday as quoted by Antara news agency.

Slamet said that the dry season, which came with high air temperatures, had been there since May and would continue, although intermittent rain has been predicted to fall occasionally.

He said that the air temperature in Pekanbaru currently hovered between 31º and 34.5º Celsius.

The absence of the sun at night, he said, only made the temperatures go down slightly and he added that land fires could still easily be triggered.

The Aqua and Terra satellites, according to Slamet, had detected at least 215 hot spots across Sumatra Island, with the highest number, 192, found on Riau.

He called on people to be extremely cautious against the hot temperatures, especially while they were fasting. He also called on people to put on masks when doing outdoor activities because of the high intensity of dust and haze.

He expressed hope that the drought would come to an end as the rainy season started at the beginning of September.

He said that although rain would probably fall before September, it would be just of low to medium intensity. Rain of high intensity was expected to come only as August was approaching.

“There is potential that frequent rains will fall in the fourth week of July,” Slamet said.

He added that in general the weather in Riau was cloudy and bright. The chance for uneven rain of low intensity at night or in the early morning is predicted for central and eastern coastal areas of Riau.

Responding to the bad weather in Pekanbaru, Mayor Firdaus called on people to put on masks while conducting outdoor activities. He also banned people from burning domestic waste, or grass when clearing land.

“Do not burn garbage. Turn it into compost. When disposing of cigarette butts, make sure that they have been completely extinguished,” Firdaus said.

Meanwhile Erma Yulihastin of the climate variability team of the National Institute of Aeronautics and Space’s atmosphere technology and science center said the El Niño phenomenon, an anomaly in sea surface temperatures on the equator in the Pacific Ocean, will continue to strengthen until December this year.

“The El Niño index is currently 1.37 and is predicted to increase to between 1.5 and 2.5. This is the strongest index within the last five years,” Erma said in Bandung on Friday. -
 

WussRedXLi

Greater Supremacy Member
Joined
Jun 15, 2001
Messages
90,610
Reaction score
10,762
Your ac is inverter?

Mine non-inverter :(

My units are non-inverter. Switch on 2 units.

Careful about the water heater too, for those who loves to bathe with warm water. Sucks a fair bit.
I use the warm water of my younger kid to bathe (the rinse water in the tub). :D. Still v clean. 2X a day.
 

plasticpistola

High Supremacy Member
Joined
Nov 1, 2006
Messages
37,515
Reaction score
1,590
My units are non-inverter. Switch on 2 units.

Careful about the water heater too, for those who loves to bathe with warm water. Sucks a fair bit.
I use the warm water of my younger kid to bathe (the rinse water in the tub). :D. Still v clean. 2X a day.


crap didn't know that. I no matter how hot the weather is, will still need a nice hot shower else won't feel clean ;(
 

WussRedXLi

Greater Supremacy Member
Joined
Jun 15, 2001
Messages
90,610
Reaction score
10,762
http://www.stormsurf.com/page2/forecast/forecast/enso/recirculate.shtml

This page documents the current state of the Pacific tropics as of 7/15/2015 as it relates to the developing El Nino. It further suggests that warm surface waters migrating to the west in the Nino 3 & 4 regions might begin to get recirculated as they advect into Kelvin Wave Generation Area (KWGA - 135E to 170W between 3 degs N and S), resulting in a feedback loop that would superheat the existing subsurface warm pool, eventually upwelling and have an amplifying effect on the surface warm pool and ultimately the atmosphere. There is no documented evidence of this occurring in the past, and we're not saying this will happen. But it appears to be a possibility.

Figure #1
The below 3 hi-resolution images were taken 10 days apart between 6/25 and 7/15 and roughly depict the progression of anomalously warm water from the first Kelvin Wave of the season generated by a Westerly Wind (WWB) burst in March and perhaps the early arrival of water from a second WWB in early May. The solid black line depicts the westward most position of continuous water above 2.25 degs C. The yellow arrow depicts the direction of expansion. Note that expansion is not limited to just the west, but is also occurring to the north and south, though less so. The blue box identifies the KWGA, the origin of the WWB noted above. In the last image (7/15) circles (A) indicated building pockets of 2.25 deg C anomalies. Close inspection also reveal that in area (B) anomalies in excess of 4 degs C are building and backfilling waters migrating west, presumably fueling future expansion.

Images courtesy of NOAA/NW/NCEP/EMC at 0/083 x 0.083 deg C resolution.
surface.png



Figure #2
This image (also from 7/15/2015) depicts the current state of subsurface waters of the equatorial Pacific. Arrow (A) depicts the downwelling of warm surface waters in the West Pacific driven by a significant WWB that occurred there from June 22-July15. Those waters are starting to concentrate at Arrow (B) where a small pocket of 3 deg C anomalies are depicted. This is the start of the third Oceanic Kelvin Wave of the year. Movement of those waters follows to Arrow (C) where the Kelvin Waves associated with WWB #1 & 2 have merged forming a broad subsurface reservoir of 5+ deg C anomalies that are impacting the Galapagos and Ecuador Coast and upwelling to the surface there. temps are confirmed at 4-5 deg above normal at the Galapagos. Trade winds (from the east) in that region are then carrying those waters to the West - see Arrow (D).

The question is: If these waters continue their westward expansion, will they continue migrating into the KWGA (as they appear to already be doing) and get pushed to depth as depicted by Arrow (E) by westerly anomalies already in play there? And will they then get recirculated through Arrows B & C only to re-emerge as another Kelvin Wave, or at least supercharging either Kelvin Wave #3 or yet another Kelvin Wave likely to develop associated with the next Active Phase of the MJO in August?

Image courtesy of NOAA/TAO/TRITON
subsurface.png



Figure #3
Two images from the record 1997 El Nino are provided depicting Sea Surface Temperature anomalies. The KWGA area is identified by Box A. As best as can be identified, water temps flowing into the KWGA reached only 1.0 degs on 7/12 and barely 1.5 degs by 11/21 at the peak of the event. As of the July 15th image for 2015 temps are +1.5-1.75 degs. Granted the images are far higher resolution today, and the color scales are different. But today's image clearly depicts a +2.25 deg pocket building on the eastern edge of the KWGA (leftmost circle A in Image #1 above). What happens if some of that superheated water get recirculated down into either the new developing downwelling Kelvin Wave in July or another possibly in August?

Image courtesy of NOAA/NESDIS
97_composite_export.png
 

WussRedXLi

Greater Supremacy Member
Joined
Jun 15, 2001
Messages
90,610
Reaction score
10,762
Image #1
The first image below depicts the U component of the 850 mb winds. The U component is the zonal component, or east-west direction only (ignoring north or south). Said another way, orange/reds are westerly wind anomalies. The more red the coloration the stronger the velocity and greater the likelihood of it being a Westerly Wind Burst (WWB). Yellows could be interpreted to be just anomalies. Blues are easterly anomalies. The 850 mb level is up at about 4,500 ft, but is typically assumed to be a good proxy for what is occurring down at the oceans surface. Notice the 3 past WWBs are clearly visible below the horizontal line (March, May and early July). The thing to take notice of here is that per the model, from today forward, westerly anomalies are to continue at least through early Oct. There is no projection for easterly anomalies in the KWGA. This is very good news suggesting that much more warm water will get pushed to depth and continue the flow into a now well established warm reservoir in the equatorial East Pacific. If the last bit of westerly anomalies are in October, the resulting Kelvin Wave would not arrive in Ecuador till early January 2016.

75S75N_6_5_uwnd850_white_export.png




This image depicts the forecast for the MJO. Solid red lines are the Active Phase, dotted lines the Inactive Phase. Notice an Inactive Phase is scheduled for late July into early August in the KWGA. This is consistent with other models output. Also notice an Active pulse is to follow in mid-September.

75S75N_1_5_uwnd850_white_export.jpg



And finally the combination of the two. Notice that even during the Inactive Phase in early August westerly anomalies are to persist. and then be enhanced some by the Active Phase that follows. This is consistent with our recollection of the '97 event in that in the later stages of the El Nino lifecycle, westerly winds become persistent, and less influenced by the MJO, with the MJO almost appearing to dissipater. That is becuase the El Nino base state becomes so entrenched (assuming it is strong enough) that the MJO begins to have almost no influence. This would be a hallmark sign of an extremely strong El Nino.


75S75N_combo1_export.png
 
Last edited:

WussRedXLi

Greater Supremacy Member
Joined
Jun 15, 2001
Messages
90,610
Reaction score
10,762
The water temps around our area (Malaysia, Indonesia, Papua new guinea) are cooling as well. Mentioned before, we need this cool water to setup a "gradient" wrt the warm waters off Peru/Ecuador. This shifts the convection away from us.

sst_anom_new.gif
 
Joined
Mar 17, 2013
Messages
1,297
Reaction score
0
Why u all always talk about Honeywell purifier?

I hear Honeywell and blueair and blueair wins hands down

The hepasilent very quiet.

Honeywell really too loud for bedroom

Don't waste time and effort to customize this and that

Buy blueair settle. Haiz.
 
Status
Not open for further replies.
Important Forum Advisory Note
This forum is moderated by volunteer moderators who will react only to members' feedback on posts. Moderators are not employees or representatives of HWZ Forums. Forum members and moderators are responsible for their own posts. Please refer to our Community Guidelines and Standards and Terms and Conditions for more information.
Top