whats the differrance in the no.s of gas in Air conditioner?

Question

In an Air conditioner the gas used are of different no.s like 12 or 22. what this no. means and what is the difference in cooling effect?

Answer 1

From Wikipedia:
"The decoding system for CFC-01234a is:

0 = Number of double bonds (omitted if zero)
1 = Carbon atoms -1 (omitted if zero)
2 = Hydrogen atoms +1
3 = Fluorine atoms
4 = Replaced by Bromine ("B" prefix added)
a = Letter added to identify isomers, the "normal" isomer in any number has the smallest mass difference on each carbon, and a, b, or c are added as the masses diverge from normal."

This is very confusing, but it means that Freon-12 (CCl2F2) has 1 carbon, 0 hydrogen, and 2 freon atoms

Freon -22 has 1 carbon, 1 hydrogen, and 2 freons, (CHClF2)

These numbers have little or nothing to do with the cooling effect, which is a function of the equation-of-state curve for each.

Freon-12 has a Latent heat of vaporization (lv) of 166.95 kJ.kg-1
Freon-22 has a Latent heat of vaporization (lv) of 233.95 kJ.kg-1

Answer 2

you probably meant 11 and 22. If I understand it correctly, you might be talking about refrigerants R11 and R22. In the US depends on state laws, only liscenced technician can purchase those refrigerants. However R11 refrigerants should not be used or leaked into the air sinced it hurts the ozone layer. If you have existing equipments/appliance that uses R11 be careful of disposing them. In terms of cooling effect, not much difference, safety is more emphasized. R22 is soon to be out phased also. R134A is the new common refrigerants, can be bought locally by anyone since it does not hurt the ozone. However, you cannot convert from one refrigerant to another.

Answer 3

These are normally FREON GAS with GRADE 12 OR 22. The type of gas is selected based on air conditioner compressor type( whether centrifugal or reciprocating ) and capacity.