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wood

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Posts posted by wood

  1. Just now, TallGuyJohninBKK said:

     

    I think you're going to need Plod, the former science minister and boat propellers advocate, to answer those questions.... :crazy:

    Yes he's rang me up and asked to pose the question to you all.????

  2. Interesting topic..

    As per my last post, both the canary and I made it through the night after sealing some entry points for this polluted air.

    It did help, the Xiaomi 2S air purifier stayed on minimal power and hence low noise all night..

     

    Joking aside, it has me wondering;

    Scenario 1.

    Hypothetically speaking, if a room is sealed and there are no air entry points, apart from those loose windows and gaps at the door, and assuming that the external air pressure and air humidity is identical to the inside air pressure and humidity, how does a room replenish its air/ oxygen content ?

    The room is occupied and oxygen is being depleted and replaced with human expelled Carbon dioxide.

    What are the physics involved for the depleted oxygen % to be replenished ?

    Outside air has other factors to maintain and stabilise the oxygen % content that we breathe. ( pressure differentials, humidity, even wind).

    It's fairly common knowledge that air pressure will fill any lower air pressure void it encounters, but as above, inside that room, this is not the case, so how does it replenish? 

     

    Scenario 2.

    As above, equal air pressure inside and out the room, identical humidity.

    You open a larger window and expect a gust of wind to fill the room with fresh air, except it's not that simple in this case.

    The assumption is that the outside oxygen molecules are chemically attracted to their counterparts inside  the room and rush in, therefore filling the room back up to the 20% oxygen  content that we need.

    But, if this is the case, how does it stop and maintain at 20% ?

     

    Answers on a postcard please.

     

    Wood.

     

  3. 40 minutes ago, MaxYakov said:

    Thanks for the update If you're going to run a sealed room, don't forget the CO2 scrubber and O2 generator (or tanks).

     

    I've read (and it makes sense to me) that it is not recommended (unhealthy) to occupy a sealed room for long periods (such as in the wintertime). I was a nuclear submarine crew member sealed up for 60+ days at a time on patrol and we were told by the Atmosphere Control Officer that the air pollution in the sub was actually worse the the LA smog at it's worst (there was cooking and smoking by the crew was allowed). The O2 level would drop to the point where cigarettes would self-extinguish if they were placed into an ash tray. Believe it or not, the O2 bleed into the interior was done manually.

     

    I seemed to have survived the experience without wearing a PM2.5 mask, but these days I'm not as young so I'm not taking any chances.

     

    PS: I believe the A/C compressor (of the refrigerant) is external (outside) and the evaporator (cooling unit) is inside. Also, it ends when the fat lady sings.

     

     

     

    Cheers Max....

    All sound advice and correction on the aircon appreciated....

    No more to add, as its late, but you do know us Brits still use canaries as O2 sensors ???? ????

    • Like 1
    • Haha 1
  4. Going the whole nine yards here....

     

    More info on keeping it out of the home

     

    We have 3 aircon units mounted in the false ceiling that are fed their coolant from external evaporator fan units, pretty standard set up..

    Upon viewing today into the void space which is approximately 60cm deep i noticed in addition to the coolant feed and return pipes a good number of other "utility" pipes that run hidden up in the ceiling void.

    These pipes all had a clear hole around them as they access our property from the outside and beyond, clearly a source for outside (polluted) air to enter our property, bedrooms and living areas.

    Now then, I have previously stated that our Xiaomi 2S purifier was adequately managing the inside home Pm2.5 levels, but, this recent pollution increase has had it on full wack to keep the pm2.5 levels below 5mcg.

    Off to Hompro again..... bought an aerosol can of cavity expanding foam and spent a couple of hours sealing all those hidden entry points up in the roof void, pretty easy to reach fortunately.

    So here at 10.30pm is a shot of the Xiaomi pm2.5 running  at a register of 1 mcg and it is now maintaining this at the lowest nightime fan speed.

     

    When will it ever end....

    Screenshot_20190131-220222.png

  5. 22 minutes ago, TallGuyJohninBKK said:

    Meanwhile, how are folks' air purifiers keeping up with today?  Mine are NOT!

     

    When I woke up today, the indoor non-filtered air inside my home was reading as much as 80 mcg of PM2.5....

     

    The best my Sharp air purifier in my bedroom could do, running on high, (along with Filtrete media on my bedroom air con filters) was get those microgram levels down to the low to mid 20s....  that's in an older home with windows and doors that are not well sealed.

     

    Hi John.

    Worrying times...

    The Xiaomi air purifier 2S I bought just before Xmas seems to be running  well...

    Last night (as we know the pm 2.5 goes very bad into the early hours and it kept the pm 2.5 reading in the  bedroom at 1 mcg). Very happy with it's performance.

    I move it into the living  area at 7am, where it registered pm2.5 at 34 mcg.

    After 45 mins on full wack it got it down to 3 mcg.

    We've had it on full wack all day to keep it at 6/7 mcg....

    Wife doesn't want to go out, we're back in the UK in 5 weeks - can't wait..

    Can only expect the pm 2.5 to get worse - that's what I am prepared for...

     

    Wood.

     

    • Like 1
  6. 32 minutes ago, Misty said:

    Anyone know where to purchase or order filtrete paper?  Been searching and it looks like HomePro and Lazada are sold out for the forseeable future.

    Had the same problem, nothing anywhere...

    I bought a box of Bosch vacuum bags made from 3M HEPA material. 590 baht-  4 in a box..cut them up and had about 1sqm - used this to close any aircon external vents.

     

    Plenty in Homepro.

     

    Wood.

    • Like 2
  7. 4 hours ago, SoilSpoil said:

    You just broke the most important rule of Thaivisa: never mention Ban Krut. 

    Yes, don't worry, your secret is safe with me.

    In fact, it such a secret, there's some cracking offers on at the moment.

    Let me know if this private message Soilspoil ?? can be published on the forum. 

    Cheers.

    Wood

  8. 1 hour ago, utalkin2me said:

    I have been looking at the readings the past few days, but...

     

    I thought it would not hurt to ask here, how far south of Bangkok do you guys feel you would have to be to have an appreciable lower level of pollution? Samut Prakan, or much further south than that? 

    I decided to exit Bangkok to get some fresh air this week as the pollution forecast was looking dire.

    We drove down to Ban Krood and booked into a resort there for 7 days. Me and my wife got sick of wearing a mask all the time in BKK for the last 3 weeks. It's pretty worrying to say the least.

    We've been mask free and enjoying a good sea breeze and a pm2.5 of 13 outside.

    Driving past Hua Hin you could still see a lot of the similar "smog" that's hanging around in BKK.

    So to answer your query, go as far as Ban Krood if you want some fresh air.

     

    Wood

     

     

    • Like 1
  9. 15 minutes ago, ExpatOilWorker said:

    I will probably also go for the above Sndway. Do you know what kind of pm2.5 sensor it is using? Laser, LED, light scatter?

     

    Have you ever taken the sensor out and tested the air quality in a shopping center?

    The air feels clean in most department stores, but the cooler air can deceiving.  

    I can answer this question for you.

    Today, inside a new large shopping mall in BKK, the pm2.5 reading was 67 at 11:00 am.

    Wood.

    • Sad 1
  10. There is a shortfall of N95 particulate filters in Bangkok now that the media and government are advocating  their use, and rightly so.

    My colleagues in the UK fire service have today mentioned that the equivalent and slightly better EU/BSI standard is a P2 particulate filter.

    They explain that 3M FFP2 is widely used and 3M???? make (B)millions of them.

    They are widely available at a much better price than 3M N95 product on Lazada - cash on  delivery service.

    Attached is a screen shot, courtesy of 3M, if it helps anyone locate suitable product.

    Cheers.

    Screenshot_20190114-172539.png

  11. The cylindrical HEPA filters are the most efficient, as you say, the greater surface area which will improve the airflow rate.

    Attached is the current screenshot of my unit working for the bedrooms night sleep.

    The auto mode has powered down to its lowest rate and hence low noise....

     

    Screenshot_20190107-222123.png

  12. 31 minutes ago, TallGuyJohninBKK said:

     

    That's a good result for the reduction level, given using a single purifier in that size living space.

     

    I've got an older Honeywell large size unit at home in Central BKK in our open living space area, probably about 50 sq mt. When I went into the closed room around 6 pm tonight, the original unfiltered PM2.5 reading was 50 mcg. Now after running the purifier on medium a couple hours, it's staying at about 18 mcg -- which is too high for what it should be, and what the purifier has accomplished in the past.

     

    I need to check the filter installation and setup, because it's not performing as well as it had/should.

     

    Meanwhile, this isn't helping...  Haven't seen this many 170+s in quite some time for BKK.

     

    578328865_2019-01-0721_03_59.jpg.52e16725222a996dd66c81b0a8164d22.jpg

     

    The scary bit  is that even with a "closed" room/ condo, this pm2.5 is drawn into the living areas of all of us.

    If it adds any value to this topic, we also have an LG HOMBOT square robot vacuum cleaner that is programmed to do a full sweep everday at 5am. My wife also switches it to do a second sweep late afternoon.

    It has an HEPA filter, I'm convinced that, after emptying its bin, it greatly helps keep the place dust free.

    It gets into every corner and does a brilliant job.

    Another gadget that I would strongly recommend...

  13. 11 minutes ago, TallGuyJohninBKK said:

     

    That's a good result for the reduction level, given using a single purifier in that size living space.

     

    I've got an older Honeywell large size unit at home in Central BKK in our open living space area, probably about 50 sq mt. When I went into the closed room around 6 pm tonight, the original unfiltered PM2.5 reading was 50 mcg. Now after running the purifier on medium a couple hours, it's staying at about 18 mcg -- which is too high for what it should be, and what the purifier has accomplished in the past.

     

    I need to check the filter installation and setup, because it's not performing as well as it had/should.

     

    I understand that the pm2.5 pollutant will reduce the filter efficiency but visually it may look clean.

  14. 11 minutes ago, CanuckThai said:

    Are you happy with the 2S?  Looks like a reasonable price (reasonable for replacement filter cost also).  I have portable Honeywell Hepas back home that I'm happy with.  I'm trying to find something comparable...this "looks" like a great option.

    If I can base my answer on impressions so far, then, I have to say it's quiet remarkable what it accomplishes.

    Time will tell regarding its longevity but, as of now, I would buy another one tomorrow.

     

    • Thanks 1
  15. 24 minutes ago, TallGuyJohninBKK said:

     

    Your OP post here was over the New Year's holiday, when the field and garbage burners, drivers, factories, etc were on holiday break in addition to a couple of good rainfall days, and thus the outdoors PM2.5 levels were remarkably low for BKK.

     

    Now as of today, it's back to seasonal normal for BKK with the AQI levels around town reading 150+ for red/unhealthy.  How's your air purifier and indoor air doing now?

     

     

     

    As I presented above ^, pm 2.5 is controlled at circa 11 microcgrammes  per cubic metre,  it's controlled down to 8mcg since i posted that.

    With the unit off all day today as we were out, it registered pm2.5 at 45 mcg inside and 78 outside. (It's been on 3 hours to reduce internally from 45 to 8 pm2.5).

    It's controlling a 130sqm condo inside at these numbers.

    Cheers.

    Screenshot_20190107-200924.png

  16. On Monday, December 31, 2018 at 2:02 PM, wgdanson said:

    How much? From where please?

    WGDanson.

    Did you manage to get hold of one ?

    PM2.5 is really bad in BKK tonight, never seen it like this.. ..

    I've got the unit on max speed and it's just managing to keep the indoors level down to 11 mcgs.

    Hopefully it will settle down in the night.....

    Cheers.

  17. The levels of pm 2.5 in Bangkok have been concerning to say the least, especially for this last 2 weeks.

    The recent poor visibility across the Chaophraya river has made me rethink that this river and its good amount of breeze can not overcome the airborne pollutants.

    We've always had a nice cooling breeze swirling around, but, the AQI reports got me wondering about the amount of pm 2.5 particles finding their  way into our new build home.

     

    I purchased an air purifier filter that also provides a pm 2.5 read out.

    The unit has been on for 48 hours in the bedroom already and this  morning at 07:30 the reading was as follows :

     

    I must add that the level of pm 2.5 without the unit was registering 14 units, so not a real concern inside the  home.

    The unit is Inaudible, pretty fantastic what it does.

    Here's a screen shot of the unit this  morning - we had the best  nights sleep in the  8 weeks we've been here..

     

    Cheers for the new year.

    Wood.

     

    Screenshot_20181231-062646.png

    • Thanks 1
  18. Just re read this topic and thought I would provide an update after 2 years ownership.. .

    Apart from a slight scratch last year at a petrol station ( thanks JAS21 for your kind help with recommending a Isuzu repair shop),

    the MUX has taken us all over Thailand North and south without missing a beat - it's been brilliant.

    A joy to drive, my wife loves it !

    A few members berated the vehicle and suggested its bad, poor, slow, uncomfortable and so on...

    We're looking to buy a new one in the new year.

    Service costs are very low, nothing goes wrong, gearbox is brilliant and without any issues unlike some of the vehicles that were suggested as being "better"

    No major recalls or widespread problems with the MUX.

    I wonder how all the other 4x4s are getting on ?

     

    Screenshot_20170125-124433.png

    • Like 1
  19. 125 views, but only 1 adviser that confidently suggested a credible place for quality repairs.

    This seems to be the holy grail in Bangkok for expats since it would appear there is apprehension to place the repair of our vehicles in the hands of an unknown entity.

    I understand this perfectly well.

    So, I have collected the Mux this weekend and am extremely pleased with the result-  a perfect job.

    BIG thank you to JAS21 for pointing me to this place.

    You are a gentleman.

  20. 30 minutes ago, JAS21 said:

    My wifes cousin, before retirement, was a Mr Big at T-P. Waiting time at T-P was huge and he recommended the paint shop in the next Soi ... T-P have their own paint shop.

     

    Those two prices were for similar jobs....

     

    You will need to visit to get a quote...after any holiday the queue will be longer ...much longer !!!! if we still have the phone number I'll post it later ...

     

    If it is only a chip consided getting 'some expert' to sort although maybe your wife would not be happy .......

    Thanks.

    That's clear...

    Number would be great, but we will also pop over today to get a price.

    I think we may have had the first quote above from the main Isuzu paintshop over near bangna.

    Many thanks..

     

     

  21. 2 hours ago, JAS21 said:

    Bad luck it being Pearl White ... it is difficult to match. I know we had a Pearl White V-Cross.

     

    Tri  -Petch are here ... 1088 Vibhavadi Rangsit Rd, Khwaeng Chatuchak, Khet Chatuchak, Krung Thep Maha Nakhon 10900    the very next Soi only a few meters past T-P up there is the paint shop we used ... they have an oven.

     

    As it is a pillar maybe not too much of a problem ours was a full panel and she had to spray it twice to get a match as ours was a couple of years old by then ... and faded just a bit

     

    Somewhere near here I think ... 13.823538  100.560225  sorry I don't have the phone number

     

    Think we paid 5000 the first time and 2000 the second time... I did the same panel a second time!!... she asked how much we paid last time and my wife said 2000 :smile:

     

     

     

     

    Thanks Jas21.

    Was it Tri Petch that you got the 5000 /2000 price from or did you go direct to the paint shop which happened to be near tri petch ? ( does it have a name ? A number would be greatly appreciated)

    Is it the paint shop tri petch use? 

    It's my wife's pride and joy, it got damaged on her birthday so would like to get it sorted asap..

    Not the land of smiles at the moment..

    Thanks 

  22. Hi, we have an Isuzu Mux that has been scratched by a large stone that nearly came through the windscreen on a journey back from Kanchanaburi.

    It hit the front windscreen pillar, chipping the paint down to the metal.

    Looking for a good paint/  repair shop in Bangkok that can produce the quality required for an as new finish on a fairly new Pearl white Mux.

    Took it to the main Isuzu paint shop and they quoted about 12500 baht.

    Problem is they want the car for about 12 days.....

    Any good recommendations and is that price about right ?

    Thanks.

  23. 22 hours ago, jackdd said:

    Thai people have this crazy mindset: Let's say they have a condo for rent, are offering it, but nobody wants to rent it for a year or two already. Now every normal person would think about lowering the price to find a tenant. But Thai people think: I didn't get any money for a year already, so i have to increase the price to make up for the losses of the first year, and instead of lowering the price to finally find a tenant, they even increase it.

    You will see many condos online that are empty since a few years already, but the owners are unwilling to lower the price. So you can't really say there is a "typical" price, because the average asking price you can find online is usually way too high.

    You just offer it for a price that seems reasonable. If you get 5 serious inquiries on the first day it was obviously too low and you should increase it, if nobody contacts you for a while you are probably too high (or the demand for this type of condo is just low)

    Fully agree.

    There's no real barometer for pricing.

    What seems elusive is the best place to advertise it.

    Thanks for your insight.

  24. 53 minutes ago, norrska said:

    Sorry, with the photo, it looked like an advertisement, but I see the photo has now been removed.

    I have been enquiring about  advertising Norrska but no one agent can be fully transparent with the total fees and detail exactly what they will do for us if we give them our money.

    Hence trying to whittle down the comments and advice herein.

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