^ Maybe you want to prevail the right method then?
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^ Maybe you want to prevail the right method then?
Quote:
Originally Posted by escaped
strangely enough, the number of windows, the amount of power being used in the room and the location of the room, as well as its function are all factored into the calculation
Quote:
Originally Posted by DrAndyQuote:
Originally Posted by escaped
strangely enough, the number of windows, the amount of power being used in the room and the location of the room, as well as its function are all factored into the calculation
Those factors need to be added to the m² x 600 rule of thumb.:)Any technician will start with the idea of a normal room with 1 door and 1 window.When you build a glass box for sure other rules apply.
Quote:
Originally Posted by escaped
I don't think that makes sense
I think you mean would I like to post the best method of calculating the BThU needed?
Google it, plenty of sites with full explanation
mind you, they work it out using the square metres, not cubic metres, so if you have a very tall room you need to add a bit moreQuote:
aircon size calculator
Actually my reply was pointed at EssEffBee instead of you but let's give it a go.Quote:
Originally Posted by DrAndyQuote:
Originally Posted by escaped
I don't think that makes sense
I think you mean would I like to post the best method of calculating the BThU needed?
Google it, plenty of sites with full explanation
mind you, they work it out using the square metres, not cubic metres, so if you have a very tall room you need to add a bit moreQuote:
aircon size calculator
I'm not an native English,what you probably discovered already,so many times I use a word in the wrong context.
I know there are plenty of calculators on the web but I found that they mostly calculate using m³ instead of m² because in most country's the aircon also has a heating function therefore the height is important.In Thailand airconditioners have only cooling function and calculating m² is sufficient.
This is one calculator from whirlpool Australia http://whirlpool.net.au/wiki/aircon_faq and it also lists a buying guide as which brand is the best and why.
Quote:
Originally Posted by DrAndyQuote:
Originally Posted by escaped
strangely enough, the number of windows, the amount of power being used in the room and the location of the room, as well as its function are all factored into the calculation
Quote:
Originally Posted by escapedQuote:
Originally Posted by DrAndyQuote:
Originally Posted by escaped
strangely enough, the number of windows, the amount of power being used in the room and the location of the room, as well as its function are all factored into the calculation
Those factors need to be added to the m² x 600 rule of thumb.:)Any technician will start with the idea of a normal room with 1 door and 1 window.When you build a glass box for sure other rules apply.
escaped, your concept of the sizing of airconditioners is severly flawed.Quote:
Originally Posted by DrAndyQuote:
Originally Posted by escaped
I don't think that makes sense
I think you mean would I like to post the best method of calculating the BThU needed?
Google it, plenty of sites with full explanation
mind you, they work it out using the square metres, not cubic metres, so if you have a very tall room you need to add a bit moreQuote:
aircon size calculator
I'd also like to add that the number of people frequenting the room be a part of the equation.Quote:
strangely enough, the number of windows, the amount of power being used in the room and the location of the room, as well as its function are all factored into the calculation.
There is no way on earth that someone can multiply the square metres of a prospectiove a/c installation by 600 & arrive at an 'accurate' answer unless they are;
1] Thai.
2] Complete imbeciles.
3] In no way consider other heat creating factors.
You really need to learn about a/c before you announce such rubbish.
Quote:
Quote:
Originally Posted by EssEffBee;1729001
[quote=escaped;1727697
Those factors need to be added to the m² x 600 [COLOR=lime
escaped, your concept of the sizing of airconditioners is severly flawed.
I'd also like to add that the number of people frequenting the room be a part of the equation.Quote:
strangely enough, the number of windows, the amount of power being used in the room and the location of the room, as well as its function are all factored into the calculation.
There is no way on earth that someone can multiply the square metres of a prospectiove a/c installation by 600 & arrive at an 'accurate' answer unless they are;
1] Thai.
2] Complete imbeciles.
3] In no way consider other heat creating factors.
You really need to learn about a/c before you announce such rubbish.
Excuse me Sir,but did you notice the 3 words highlighted in green in my previous post.They say " rule of thumb " and as far as I'm concerned that has a completely different meaning as " Accurate ".I also added that a technician would start from the idea of a room with 1 window and 1 door,hence the m² x 600 Calculation.Add more factors and the formula will change.
Now please point me to a post of mine where I say that m² x 600 is an accurate calculation.
The post of my calculation was more directed as to show that a 15-16000 Btu unit is way to small for a 36 m² sized room.You should start from at least 21000 Btu and then add all the factors like extra windows,south side facing,extra people in the room etc. to reach the correct size.
Maybe, maybe not. Here's what I have in concrete red brick wall, three meter high ceiling with ceiling insulation. All outside walls have foliage provide shade on walls 90% everyday.Quote:
Originally Posted by escaped
Three air cons in house all doing a good job cooling the room.
8x8m (64sqm) = 15kbtu. Three large sliding glass windows and one large sliding glass patio door.
4x7m (28sqm) = 10kbtu. One large sliding glass window.
7x13 (91sqm) = 16kbtu. Three large sliding glass windows.
So you guys calculate your hearts out. This works for me.
You say that "Excuse me Sir ,but did you notice the 3 words highlighted in green in my previous post"? You say "rule of thumb" and as far as I'm concerned that has a completely different meaning as compared to "Accurate".Quote:
Originally Posted by escaped
Please, feel free to support your theory. It's not the first time a theory has failed in the history of the world.
I think we have agreed that it is not accurate, and not much useQuote:
Originally Posted by escaped
better to calculate it more accurately and base decisions on that figure
as Norton pointed out, the sizes of his aircons (he does have a lot!) are much smaller than you would expect from any "rule of thumb"
Indeed they are smaller the my rule of thumb would advise and only a fraction of the size that any of those sofisticated calculators on the web would suggest.Quote:
Originally Posted by DrAndy
Begs the question if Norton's aircons are really working as good as he thinks they are.
Using them for six years. No thinking involved. I "know" they work very well.Quote:
Originally Posted by escaped
Had you any practical experience with air conditioning you would have immediately realized putting a 21.6kbtu unit in a 36sqm room is dumber than most of the rules of thumb on the internet.
As I said, along with several others, a 15 or 16kbtu unit is sufficient for JJ's room.
Of course if he has 10,000 baht more than the cost of a 15kbtu unit, why not install a 21kbtu unit. Just to be on the safe side and have the confidence he has complied with a rule of thumb.
true; he only thinks he is cool but really, he is hot!!Quote:
Originally Posted by escaped
no pics please
link?Quote:
Originally Posted by escaped
what fraction, 31/32nds?
the thing is, calculating aircon sizes can be dependent on so many things, and it is difficult to know which are the most important unless you approach it from Feng Shui
you would then realise the positioning is critical; if you get it wrong all your money will flow out of the door. Similarly, if mounted incorrectly it may fall off the wall
Nortons actually fell off the wall three years ago but he is still happy
I have bought an aircon with a dehumidifying function. With dehumidifier setting it does not cool down so much but brings down humidity. Saves energy and is quite comfortable compared to high humidity.
You bet. Nothing better than a cool breeze blowing up your shorts. Brings a smile to my face every time.Quote:
Originally Posted by DrAndy
Here's a proper A/C survey, for Victoria Australia only.
https://teakdoor.com/Gallery/albums/u...con_survey.pdf
I thought all aircons did that, which is why you get the water dripQuote:
Originally Posted by Takeovers
Yes they all do that as a result of cooling. But some are specially designed to dehumidify and don't cool as much as a special feature. They can cool in the normal fashion as well.Quote:
Originally Posted by DrAndy
right.
Mine seems to dehumidify enough, I wouldn't want it too dry
The purpose of the dehumidifying is not to get the air especially dry. The purpose is to dehumidify with minimum cooling.
If you are adjusted to the warm climate you can easily keep the temp at 27 or 28°C and be comfortable if not too humid. You can save energy in that setting.
I usually use 27C as the setting
and it is usually perfect temp and humidity, so that's lucky
Which should put temp at floor level a comfortable 25C.Quote:
Originally Posted by DrAndy
not if your aircon is already on the floor
Have had 2 daikin 12k units for 5 years..no problems at all. Just need them cleaned every 6 months. Had an LG and it was crap.
No one has mentioned Carrier..it the mercedes of air I think...all my rich friends swear by them.
The big problem w/ ac is the installer .even here in bangkok..so many mistakes..corrected for free by factory guys....the drainage hose is usualy not angled correctly and they use tight 90 deg elbows that quickly fill w/ debris.....
sizing calculations....sun exposure..type of wall so many things to consider..double pain glass...window tint ..color of roof and walls..ceiling ventilation....heat producing devices in the room...water heater, computers, etc