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- Newsgroups: rec.autos
- Path: sparky!uunet!europa.asd.contel.com!emory!rsiatl!jgd
- From: jgd@dixie.com (John De Armond)
- Subject: Re: Intrepid and Ozone A/C
- Message-ID: <=7hq5md@dixie.com>
- Date: Mon, 16 Nov 92 04:33:01 GMT
- Organization: Dixie Communications Public Access. The Mouth of the South.
- References: <1992Nov15.171901.27923@athena.mit.edu>
- Lines: 62
-
- cid@athena.mit.edu (Derek H Cedillo) writes:
-
- >Quoted from advertisement between pages 54 and 55 of the Nov. 16th Issue
- >of Newsweek:
- >"The air conditioning refrigerant cools without harming the ozone."
-
- >*round of applause for the Intrepid*
-
- Just shows P.T. Barnum was right. As with most of this econazi stuff,
- reality is a bit more nasty than the lovely shade of green painted
- by the ad agencies.
-
- The refrigerant is R-134a, a hyperfluroinated hydrocarbon refrigerant.
- According to the ozone theory of the day, it causes minimal damage to
- to the ozone layer. This is subject to change since this is all smoke
- and mirrors. Even though zero damage is claimed, EPA still requires it
- to be captured and disposed of. Just like R-12.
-
- While it "solves" what is likely to be a mythological problem, it brings
- some real world problems to the car owner. All the materials used in
- an R-134a system are new and have unknown health effects. R-134a
- has caused testicular cancer in lab rats. While I place little faith
- in lab rat tests, it should be noted that R-12 is proven safe under
- all conditions that do not cause molecular disintegration. Similarly
- reports are already coming in that the polyalkaneglycol (PAG) oil used in
- R-134a systems causes severe skin irritation to some technicians.
- PAG has yet to pass the health screens so its long term effects are
- unknown.
-
- While non-flammable at atmospheric pressure, R-134a does become flammable
- at slightly elevated pressures (<5 psi). Thus we replace a non-flammable
- refrigerant with one that can be ignited. This is not as much of a
- problem as it may appear because freon/oil, as emits from a leak, is
- also flammable.
-
- On the maintenance front, the situation looks even more bleak. The current
- price of R-134a is around $10 a pound. Limited availability can cause
- a 30 lb can to cost as much as $1000 by the time it makes it to the
- service technician. Compare this to R-12 which went for $0.30 a pound
- before the econazis went on assault and even with the green tax, still
- costs only around $3 a pound. This translates into stratospheric
- repair costs. Worse, no mixing at all is allowed between R-134a
- and conventional systems. Even traces of chloride ions cause
- rapid failure. The literature reports as little as 1% contamination
- with R-11 causing compressor failure inside a week of operation.
-
- Lastly but not leastly, the cooling capacity of R-134a is about 30% less
- than that of R-12. That means larger condensers, larger compressors,
- more power required to drive the compressor, lower economy and so on.
-
- There were alternatives that would have accomplished the same objective
- but since none of them had the political might of R-134a, R-134a is
- what you get. Now doesn't that make you feel good.
-
- John
-
- --
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