A room that is 12 square meters is 3 meters by 4 meters in size, or about 3.46 meters square.
The question does not give the units of measurement for the room's size. Assuming they are feet, the square footage is 20*12 = 240 square feet.
6 cents
The question does not give the units of measurement for the room's size. Assuming they are feet, the square footage is 12*15 = 180 square feet.
One size is 15 feet by 20 feet. Divide 300 by any number. The number is the first dimension. The answer will be the other dimension. Example: 300/12=25. This room is 12 x 25 feet.
Freon for your cars air conditioner
I assume that the smoke you experience hasn't burned your house down yet. The vapor that appears about 12" from the a/c is cold air from the air conditioner meeting the warm air in the room it is cooling, and the cold condenses water vapor out of the hot air, just like a cloud. So it may be steam you're seeing -- not smoke. It should go away after the room cools down a little. If this is not the case, and it really is smoke in your room, then you need to turn off the air conditioner, then unplug it, and call a certified a/c technician. It's possible that someone may have overcharged the freon in that air conditioner.
Freon for your cars air conditioner
The Friedrich SS10L10* is the most energy efficient air conditioner with a rating of 12.
12 kw
12 V
Not really. A 2000W generator will give you about 10 amps. Your normal RV air conditioner will draw 12-15.
R 12
A 3.5kW Air Conditioner is probably only sufficient to cool one room. It should be okay for something like a bedroom or small living room, depending on the ambient temperature. If you're looking for 5 degrees C of temperature drop in a room bigger than 12' square with an 8' ceiling then I would go for something bigger, like a 5.7 kW or two 3.5kW units.
Any of the air purifiers listed will have no trouble filtering a 168sq ft area, although a larger air purifier will provide faster filtration.
For automobiles there are many but the two major ones are R-12 and R134a.. For the home there are various types of air conditioners like window air conditioner, split air conditioner, packaged air conditioner and central air conditioning system..... Most home systems use R-22 refrigerant but R-410a is also an increasingly used refrigerant known as PURON...................
About 12 x 15 feet.