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- From: ghg@en.ecn.purdue.edu (George Goble)
- Subject: Re: Charging A/C with Freon
- Message-ID: <1992Jul28.113736.170@en.ecn.purdue.edu>
- Organization: Purdue University Engineering Computer Network
- References: <1992Jul28.001743.25184@eos.arc.nasa.gov> <1992Jul28.061812.12375@mr.med.ge.com>
- Distribution: na
- Date: Tue, 28 Jul 92 11:37:36 GMT
- Lines: 29
-
- In article <1992Jul28.061812.12375@mr.med.ge.com> hinz@bonfire (David Hinz Mfg 4-6987) writes:
- >jbm@eos.arc.nasa.gov (Jeffrey Mulligan) writes:
- >: ghg@en.ecn.purdue.edu (George Goble) writes:
- >:
- >: >The largest single source of leaking CFCs are automobile A/C units.
- >: >The world's 225 million A/C cars each leak around 1/2 lb of CFC-12
- >: >each year on the average. The industrial solvent and foam blowing
- >: >sectors have pretty much cleaned up their act by now.
- >: >--ghg
- >:
- >: What about large air-conditioned buildings?
- >: Are service personnel now required to recover all freon when servicing
- >: these large units as they are with auto units?
- >:
- >As I understand it, stationary units are not nearly as guilty as those in
- >cars, possibly because they operate under better conditions, e.g. MUCH less
- >vibration, more constant temperature-band, and so-on. Seals don't deteriorate
- >as badly in stationary units.
- >
- >One complaint....I know of no DECENT replacement for Freon when troubleshooting
- >thermal electrical problems...anybody?
- >
- I assume you mean the cans of "freeze mist"? Many of those now use R-22
- for the interim. R-22 is 0.05 the ozone depletion of R-12. R-134a,
- the refrigerant for the new cars (zero ozone depletion) is currently
- $9/lb wholesale, so it should soon be in the freeze mist cans. One does
- not have to worry about oil compatibility and miscibility when using it
- to freeze electronics
- --ghg
-