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Re: AC- R12 v R134a
Posted by Duane Dostie (more from Duane Dostie) on Wed, 30 Jun 1999 16:56:21
In Reply to: AC- R12 v R134a, Chasisaac1, Tue, 29 Jun 1999 16:36:44
> there is R12a??
Nope. R12 (dichlorodifluoromethane) has only one isomer. That is there is only one possible way to orient the two chlorines and two fluorines around the central carbon. The 'a' desigantion represents the most symmetric isomer.
I assume that it is different than R12 (ozone friendly). Is > it available in the US and is there a conversion kit for it? My AC isn't
> working as well as it could be, so I might do a conversion and replace most > everything. > > Also, what is the difference between R12a and R134a?
No such animal, though I wouldn't rule out the possibility of someone marketing an R12 replacement under the trade name of 'R12a.' Stranger things have happened.
R134a is the most symetric isomer of tetrafluoroethane. Two fluorines on each of the two central carbons(1,1-difluoro-2,2-difluoroethane) R134 is 1,1,1-trifluoro-2-fluoroethane, the unsymmetrical isomer.
R12 is a CFC(chloro-fluorocarbon), while R134a is an HFC(hydro-fluorocarbon), which due to the absence of chlorine has a lower ODP(ozone depletion potential) than R12.
Duane
Posts in this Thread:
- AC- R12 v R134a, Chasisaac1, Tue, 29 Jun 1999 16:36:44
- Re: AC- R12 v R134a, David Prantl, Thu, 1 Jul 1999 21:14:27
- Re: AC- R12 v R134a, Duane Dostie, Thu, 1 Jul 1999 21:13:59
- RE: AC- R12 v R134a, SimonC, Thu, 1 Jul 1999 08:42:44
- RE: AC- R12 v R134a, SimonC, Wed, 30 Jun 1999 23:08:14
- Re: AC- R12 v R134a, Duane Dostie, Wed, 30 Jun 1999 16:56:21
- Re: AC- R12 v R134a, Keifer5448, Wed, 30 Jun 1999 15:30:35
- RE: AC- R12 v R134a, SimonC, Wed, 30 Jun 1999 11:16:18
- RE: AC- R12 v R134a, SimonC, Tue, 29 Jun 1999 22:36:03
- Re: AC- R12 v R134a, James Law, Tue, 29 Jun 1999 22:35:46
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