Air Conditioners and R22 Gas

http://en.wikipedia.org/wiki/Chlorodifluoromethane

thanks boss kindly also explain why only use this gass not other

There are other gases and a lot of them are in use including propane.

It is only the question of efficiency and now the GWP and OD values in which the optimum one is chosen and that too for the application - temperature,

A list is again available - though not complete but still lists a huge number of them - of all places in wiki, had you been kind enough to search.

http://en.wikipedia.org/wiki/List_of_refrigerants

R22 gas is refrigerant.So many gases are there . It will depends on application what we are using. For airconditioners R 22 gas will use.

regards,

lavurk

R22 will start being phased out from next year...........no more R22 systems will be manufactured. Although you have refrigerants like R404A and R410A, many manufacturers are by-passing these systems and are going to CO₂ and LPG based refrigerants...........mainly because of the very high GWP of the other refrigerants.

Hi MOBI,

The reason for phasing out R22 gas is that his gas (freon) causes a hell of a lot of damage to the ozone layer, it has already cause two whopping grat holes in it over the poles!

Spencer.

Oops! Wrong R version.

Thank you Scapolie, I am very well aware of this, but, of the HCFCs, R22 has the lowest ozone depleting potential, and this is why it didn't met its fate with the banning of the CFCs............this is why the HFCs like R134a, R404A, R407C, R410A and R507 were produced as a long term replacement for CFCs and HCFCs. As I pointed out the refrigerants have extremely high GWP.

This is why many manufacturers of refrigeration equipment have concerns regarding Global Warming and are manufacturing equipment that uses R744 or R170, R290, R600 and on large shore based units R717 and R723. All these refrigerants have very low or zero ozone depletion and GWP potentials, compared to the HFCs.

One thing that I forgot to mention is, while some countries are trying to limit atmospheric pollution by refrigerants they use, many are not e.g. India, China.............they still use CFCs by the truckload and in some US states you can still purchase cans of R12 to recharge automotive air conditioning systems. In Australia you have not been able to do that for many years............in fact you cannot purchase a refrigerant or work on a refrigeration system without a refrigeration license.

R-22 refrigerant (CL-F2-CH4) was used not only in stationary AC applications, but for refrigeration as well. It has been, and still is one of the best refrigerants for AC application, due to it's specific heat, compression ratio requirements, stability, toxicity and cost. As of 2020 (or sooner) it will no longer be manufactured. At present there are several manufactures producing "drop in" replacement gases to replace it. The industrial accepted new refrigerant to replace R-22 is R-410a. Puron is one of the trade names for this. It is supposed to be a zero ozone depleting (ODP) refrigerant. R-22 ODP is 0.1. This means no ozone loss as, the chlorine content of this new refrigerant is 0. The down side of R-410a is that it's global potential warming factor is all most off the scale.

We are dammed if we do and dammed if we do not.