[anishnamson]

In my split AC 2ton (R22) initial setting temperature is 16degree Celsius but I need 12degree is it possible to reach 12 degree. If not please explain and help me

[ma0641]

Not sure what you are asking. 16* C = 61*F. Temp is set by the Thermostat. Do you want the room temp to get to 12* C/ 54*F?
I believe that is unrealistic in a house considering ambient temperatures.

[anishnamson]

Not sure what you are asking. 16* C = 61*F. Temp is set by the Thermostat. Do you want the room temp to get to 12* C/ 54*F?
I believe that is unrealistic in a house considering ambient temperatures.

For Chemical Storage room is it possible to make 12* C/ 54*F by resetting thermostat

[smoothy]

How well insulated is the room and what are outside ambient temperatures... those both play heavily into the factor as does the capacity and efficiency of the system.

With a 2 ton system...that room better be small AND well insulated.

[anishnamson]

300mmthk Concrete wall and room size is 3M X 3M X3M, Outside Ambient temperature is 50*c. Not insulated. Is it possible to reach 12*c?

[ma0641]

I seriously dpubt you will get a 70* F differential. A conderser at 50* C/ 122*F can't do it.

[anishnamson]

I seriously dpubt you will get a 70* F differential. A conderser at 50* C/ 122*F can't do it.

If I changed to 5ton AC then possible to reach 12*C?

[smoothy]

300mmthk Concrete wall and room size is 3M X 3M X3M, Outside Ambient temperature is 50*c. Not insulated. Is it possible to reach 12*c?

That's like trying to air condition an oven that's still operating. All that concrete is going to be trying to heat up that space and will have effectively an unlimited ability to maintain that which will radiate into your space and you do have a very limited ability to cool that and to what temperature.

The temperature differential limit mentioned by ma0641 is a function of the refrigerant type used as much as is the system design. There is an actual limit as to the range of drop that's possible.

If at all possible I would consider using some form of insulation on either side of the wall you can access, probably the outside as concrete is porous, and would reduce interior condensation.

As far as what the actual limits are I will defer to others more knowledgeable and experienced. I remember they exist from studying to get my license... I however do not work in that field and just do not remember what they are.

[ma0641]

300mm wall has an R value of 2. You can't have the air handler inside so you would need vents to get air in and out. Considering the ambient temperature, temp you want and R value, I think you would be throwing money away. Build something with an r 40 wall, you may get the temp down but the ambient temp is another big issue with the potential temperature drop across the coil. No easy solution.

[tickle]

So, what does the OP want to keep very cold. Kind of creepy if you ask me.

[talaniman]

Chemicals

For Chemical Storage room is it possible to make 12* C/ 54*F by resetting thermostat

[caibuadday]

Here is the formular for simple heat transfer ; Q = A X 1/R X delta T , Q =total heat , A = area ,R value =insulation, T = temperature different... If this is out door then there is another set of values for the radiant heat gain, this depend on your location... Like others have mentioned you have to install some type of insulation...

[anishnamson]

Chemicals

Chlorine storage room

[talaniman]

What do you use it for and how much, and for how long? Generally a cool dry place is sufficient for most HOME applications, indoors or out. Are we talking liquid or gas? Industrial setting, or commercial, or residential?

Never heard of storage in a below room temp for safety. Where does that come from if I may ask? Well ventilated yes, and in certified containers for sure. Where does that come from if I may ask?