Jump to content








Causes of High Electricity Bills in Thai Apartments


CharlieH

Recommended Posts


On 10/8/2024 at 1:36 PM, Crossy said:

 

Does the outdoor unit start and stop (conventional) or vary speed continuously (inverter) once the room is down to the set temperature?

 

Do note that inverter compressors do have a minimum speed below which they stop, so if the cooling load is small for the unit size you'll see it cycling.

 

Yes, I can clearly hear the change of pace during its drive.

  • Like 1
Link to comment
Share on other sites

On 10/8/2024 at 2:03 PM, black tabby12345 said:

Specifications of  the A/C in my room.

Has been used since Nov.2005.

It was already here when I checked in.

 

Thai texts into English with google translate.

 

Any comments from the electrical experts Welcome.

 

 

 

image.jpeg.d616c1ec8916414ad3a2143d13701227.jpeg

 

 

Love where it says Types and Quantities of Drugs. And two EER readings. 

Link to comment
Share on other sites

On 10/8/2024 at 11:21 AM, GammaGlobulin said:

Please just do math.

Check for the heat output in BTU/h

Divide by watts.

You get EER in BTU per hour divided by power used, in watts.

Just did that on my new TCL Elite 12000 unit. After settling down for about 10 minutes, it is maintaining 600 watts @ 28C. So its EER must be 12000/600 = 20. Good eh?

Link to comment
Share on other sites

2 hours ago, KannikaP said:

Just did that on my new TCL Elite 12000 unit. After settling down for about 10 minutes, it is maintaining 600 watts @ 28C. So its EER must be 12000/600 = 20. Good eh?

 

NOPE.

 

That cheap AC that you bought...the TCL Elite 12000 has a EER that sucks the big one.

 

The SEER is only 16.

 

You need to check the side of the outdoor condenser unit.

There, you can find the numbers you need to calculate EER.

 

But, as I say....the Elite 12000....

https://www.powerbuy.co.th/en/product/tcl-air-conditioner-inverter-tac-xa13-inv-273324

 

Sucks the BIG one, BIG TIME....

 

 

Link to comment
Share on other sites

46 minutes ago, GammaGlobulin said:

That cheap AC that you bought...the TCL Elite 12000 has a EER that sucks the big one.

 

The SEER is only 16.

After much Googling around, I find that SEER 16 is good for an average costing, using air-con unit. The numbers to calculate the EER is BTH/watts. Mine is 20.

I am happy with mine.

 

Link to comment
Share on other sites

1 hour ago, KannikaP said:

After much Googling around, I find that SEER 16 is good for an average costing, using air-con unit. The numbers to calculate the EER is BTH/watts. Mine is 20.

I am happy with mine.

 

 

Sorry.  But this is baloney.

You need to use the rated maximum power in watts.

Then divide that number into maximum heat output (from the hot coil).

If this is beyond you, then please do not confuse others.

 

SEER of 16 is GARBAGE for a modern AC, in the year 2024....

 

12000 BTU is a very small AC.

So, a good SEER should be above 23....

 

And, this ain't no baloney, boy......!

 

 

Edited by GammaGlobulin
Link to comment
Share on other sites

13 hours ago, GammaGlobulin said:

12000 BTU is a very small AC.

Does that not depend on the size of the room in which it is fitted. 

9000 is fine for a medium bedroom. 12000 for a larger one, and in my 36 sq mtr, 2 mtr high lounge I have 2 x 12000s, PLENTY.

Link to comment
Share on other sites

13 hours ago, GammaGlobulin said:

You need to use the rated maximum power in watts.

Then divide that number into maximum heat output (from the hot coil).

If this is beyond you, then please do not confuse others.

The a/c takes about 2kW when first starting, settling to 700 watts after 30 seconds. Which figure shall I use to get my SEER please?

Maximum heat output...hot coil? Who's confusing who?

Link to comment
Share on other sites

1 hour ago, KannikaP said:

Does that not depend on the size of the room in which it is fitted. 

9000 is fine for a medium bedroom. 12000 for a larger one, and in my 36 sq mtr, 2 mtr high lounge I have 2 x 12000s, PLENTY.

 

You just DONT GET IT, Boy!

 

We are talking EER and SEER.

 

This has NOTHING TO DO with the size of the room.

 

Smaller machines are able to achieve higher EER .  Got it?

Don't believe me?

Just google it.

 

Machines less than about 20,000 BTU are smaller machine which can be more easily designed to achieve higher efficiency, or higher EERs.

 

You should check, once again, how EER is calculated.  This is based on an industry standard.

So, EER is calculated the same way.

 

The ambient temp used is standard.

The machine must be operating at maximum, or near maximum power.

Humidity also must be controlled for when testing EER.

 

You FING CANNOT DO THIS AT HOME.....Boy!

 

For one thing, you have NO WAY of measuring the amount of heat being put out by the Hot Coil....BOY!

 

Therefore you have NO WAY of making the calculation, because you do NOT KNOW how many BTU of heat are being produced.

 

=========

 

If you want to talk about what size machine is too big for your room, that is an entirely different subject, which depends upon many things such as insulation, exposure to direct sunlight, and time of day of use, etc.

 

I think your understanding of SEER and EER and efficiency in general....needs a lot of work.

 

 

 

Link to comment
Share on other sites

1 hour ago, KannikaP said:

The a/c takes about 2kW when first starting, settling to 700 watts after 30 seconds. Which figure shall I use to get my SEER please?

Maximum heat output...hot coil? Who's confusing who?

 

You CANNOT calculate SEER yourself.

 

Because, you do not know how many BTUs of heat are being produced by the machine, at any given time, or any given wattage being used.

 

Also, SEER is calculated on many factors, including usage at different times of year, and is seasonally influenced.

 

WHY CAN'T YOU JUST look at the Manufacturer's Rating, which is published, and available on the internet???????

 

I already sent you the published SEER rating for your machine....   16 which is garbage.

 

The EER rating is lower than the SEER.  My GUESS is that your machine has an EER of about 11 or 12, which is garbage, and it wastes a LOT of electric power.

 

You can contact your manufacturer for the exact EER rating that the company or testing organization has tested on your brand model of machine.  Probably 11 or 12, as I already told you.

 

Next time, BEFORE you buy, first look at the PUBLISHED EER and SEER ratings for machines that you might want to buy.

 

Higher EER or SEER rated machines cost more money.

 

For a machine of less than 18000 BTU, then a SEER of over 23 is acceptable.

 

I am not up to debating this further, as this is not really a suitable topic for debate.

It's just science.  And EER and SEER are what they are by.....DEFINITION....  There is no room for debate...obviously.

 

 

 

 

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   1 member

×
×
  • Create New...