Re[2]: alfa-digest V8 #861

[Richard Welty <rwelty@domain.elided>]

On Tue, 25 Jun 2002 10:28:29 -0400 Alex Rodriguez <sicar@domain.elided> wrote:

> >There is an alternative to more R-12 or converting to R-134a.   An 80%
> >mixture of propane and 20% iso-butane is a direct replacement for R-12.
> >   It's actually even a bit better (colder) than R-12.   It's approved
> >for stationary uses, but was outlawed for use in passenger vehicles...
> >one might argue that it was largely outlawed at Dupont's request (the
> >maker of R-134a) as the propane/iso-butane mixture is used in passenger
> >vehicles Europe and Austrailia with great success.
> 
> Is it possible to get this stuff pre-mixed and ready to go into my
> AC system?

i doubt it, but there are other R-12 substitutes that are approved. for a
while, Jiffy Lube was supplying an R-12 substitute named Frigic, and there
were others...

the Dupont story is not entirely "out there"; i remember the period of time
rather well. the committee of the SAE that was responsible for HVAC
standards was under the thumb of the aftermarket HVAC outfits; apparently,
they felt that the biggest killing was to be made by selling complete
R-134a replacement kits, rather than selling a simpler R-12 substitute.
they made a big deal out of the (actually rather small) fire hazard of the
propane/iso-butane mix, which was the other leading contender.

richard
--
Richard Welty                                         rwelty@domain.elided
Averill Park Networking                                         518-573-7592
              Unix, Linux, IP Network Engineering, Security
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