home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.chem:5550 sci.environment:13843
- Newsgroups: sci.chem,sci.environment
- Path: sparky!uunet!gatech!emory!rsiatl!jgd
- From: jgd@dixie.com (John De Armond)
- Subject: Re: Alternative refrigerants
- Message-ID: <tqhrppb@dixie.com>
- Date: Wed, 23 Dec 92 21:52:34 GMT
- Organization: Dixie Communications Public Access. The Mouth of the South.
- References: <1992Dec17.163059.62141@cc.usu.edu> <72070@cup.portal.com> <1992Dec22.074145.1@bb1t.monsanto.com> <1992Dec22.200224.29105@apgea.army.mil>
- Lines: 59
-
- ahgrabow@apgea.army.mil (Alexander H. Grabowski <ahgrabow>) writes:
-
- >From what I heard I understand that the acute toxicity as well as the
- >subacute long-term toxicity is too high to allow HFC-134a to be used
- >in industrial processes.
-
- Probably true. Still to be determined. The PAG-based oil is also nasty.
-
- >If anybody has different information on that, I really would be happy
- >to hear more about it.
-
- DuPont has a sorta-replacement for R-12 on the market called SUVA MP-52.
- It is not a drop-in because the oils are not compatable. System
- flushing is required.
-
- George Goble, ghg@ecn.purdue.edu, who has posted in this thread and
- is too bashful to blow his own horn, has developed and patented a
- drop-in, 100% compatable, non-flammable replacement for R-12. His product,
- called "GHG R-12 substitute", abbreviated by me to GHG-12, is compatible
- with R-12, can be mixed with R-12 in any proportion and increases the
- cooling capacity of the target system from about 20 to 60%. It has
- an ODP factor of 0.05 and is on EPA's "tentative OK" list.
-
- I have been involved in this project as a tester and a cheer leader for
- a couple of years. GHG-12 is successfully been running in several
- hundred vehicles. There have been only 2 or 3 "failures", only one
- of which is attributed to the refrigerant. This was on one of my
- systems where an O-ring blew out after installation. The system in
- question is over 20 years old and contained a replacement O-ring of
- unknown vintage and parentage so the blame does not really belong on
- the refrigerant.
-
- A detailed technical article on GHG-12 appears in the free sample edition
- of my magazine _Performance Engineering_ (TM). It is available free for
- the asking by mailing your postal address to perform@dixie.com. Do
- NOT mail to me at jgd@dixie.com asking for samples. My staff handles
- the requests; I dump 'em.
-
- The patent is #5,151,207. George can also be contacted for more
- information. GHG-12 and/or a self-sealing version that plugs hose
- porosities and small leaks can be orderd from
-
- Monroe Air Tech
- 800 424 3836
- 522 West Second St.
- Bloomington, IN 47403
- 812 332 2284 (fax)
-
- John
-
- Claimer: I'm intimately involved in the project and think GHG-12 is
- the neatest stuff since sliced bread. Apparently so do a lot of other
- folks, judging by the testamonials I'm receiving here at the mag.
- --
- John De Armond, WD4OQC |Interested in high performance mobility?
- Performance Engineering Magazine(TM) | Interested in high tech and computers?
- Marietta, Ga | Send ur snail-mail address to
- jgd@dixie.com | perform@dixie.com for a free sample mag
- Need Usenet public Access in Atlanta? Write Me for info on Dixie.com.
-