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- From: ghg@en.ecn.purdue.edu (George Goble)
- Subject: Re: Concern For Ozone Depletion Clear, Knowledge of CFCs Mostly
- Message-ID: <1992Dec28.191859.15570@en.ecn.purdue.edu>
- Organization: Purdue University Engineering Computer Network
- References: <1713@airgun.wg.waii.com> <1992Dec25.232107.3357@en.ecn.purdue.edu> <1733@airgun.wg.waii.com>
- Date: Mon, 28 Dec 92 19:18:59 GMT
- Lines: 99
-
- In article <1733@airgun.wg.waii.com> miller@hmsp04.wg3.waii.com (Griff Miller X7114) writes:
- >In article <1992Dec25.232107.3357@en.ecn.purdue.edu> ghg@en.ecn.purdue.edu (George Goble) writes:
- >>In article <1713@airgun.wg.waii.com> miller@hmsp04.wg3.waii.com (Griff Miller X7114) writes:
- >
- >>I have seen A/C hoses on a 4 year old Dodge Omni which
- >>had turned to powder and crumbled in your hand. Somebody trying to save
- >>a few cents someplace.
- >
- >Those plastic liquid lines? Ugh.
-
- Actually they are rubber, about 1 inch diameter.
-
- >
- >>"green" O-Ring + self-sealing refrigerant (GHG R-12 substitute, sealant
- >
- >Yeah, I've heard of your R12 substitute. I'm interested to hear more. It's
- >nice to know that it can be used in existing R12 systems.
-
- I will email you the info.. anybody else wanting info, mail me
- (ghg@purdue.edu), it is approx 1500 lines long. It is in approx 1800
- cars now, both regular and self-sealing versions. One company has
- found it "drop-in" substituted in R-500 equipment with no changes as well.
-
- >
- >>If you don't mind 1.5 lbs of hydrocarbons in your A/C system, one can
- >
- >I'm no chemist. Why might I mind?
-
- hydrocarbons are flammable! 1.5lbs of hydrocarbons (propane/isobutane)
- is approx equal 3lbs of "Freon-12", since they have lower mol weights.
- I removed the propane/isobutane charge after 3 months, since people
- here were afraid my car would blow up and level the parking garage!
- Public hysteria remembers the Hindenburg and the Pinto blowing up.
-
- The auto industry and MACS (Mobile Air Conditioning Society) are using
- this hysteria right now to try to get the EPA to ban refrigerant blends
- which have even TINY ( <10% ) amounts of flammable components, even though
- the overall blend cannot be made to burn. They want to test hose leakage
- with "10% mineral oil present", but they want the flammability tests
- done with "no oil". It turns out that all refrigerants burn from
- a ruptured A/C system due to the 10% oil they bring out, which becomes
- highly atomized, burns just like gasoline. I just gave the EPA a
- picture of me releasing a 3 pound charge of Freon-12 (back in 1991
- when it was still "legal" to do so), mixed with 10% compressor oil,
- and lighting it on fire. It made a 15 foot long jet of fire which
- self sustained. This is what is in your car now.. no problems in
- the real world. That 20 gal gasoline, hot oil, brake fluid, are all
- there and thousands of people do not burn to death in every little
- accident.... so what is wrong with 1.5lbs of hydrocarbons in an A/C
- system? Nothing... except that it does not make anybody any money
- to recharge your system. The materials cost to recharge an A/C
- with propane/isobutane is around $.50. Current "ozone safe" (but high
- global warming) R-134a A/C owners, are reportedly being charged
- upwards of $300 for a "simple" A/C recharge. Freon-12 (before
- taxes and controls is only about $.50/lb, R-134a is around $10.00/lb
- wholesale, which gets marked up to $30/lb when the auto dealers
- see it, and as high as $100/lb before the customer sees it.
- Before the ozone-mess, $.50/lb Freon-12 would only become
- $5/lb undergoing the same 10X "percentage" markup, with a total
- of "$15" for the "Freon" part of an A/C recharge.
-
- All the hands in the pie got their 10X markup (on Freon-12), and the
- consumer was happy also. The Ford Dealer here wants $1000 for a 30lb jug
- of R-134a! Soak the public. MACS/EPA now has the consumer out
- of the A/C loop, so he has to just set there and take it for the
- most part. 30lbs of "propane/isobutane" refrigerant would only
- cost $10 or less.
- >
- >>use 79% propane, 21% isobutane (by weight) as a drop-in substitute for
- >>Freon-12 (CFC-12) in your auto-A/C.. I ran a car that way for 3 months,
- >>no problems.
- >
- >No worries about the existing refrigerant oil?
-
- Existing mineral oil is miscible with hydrocarbons (each dissolves in the
- other), which is required for proper operation.
-
- >
- >> Look at that 20 gals of gasoline on the tank.
- >
- >Eh?
- >
- >>73% propane, 27% isobutane, but hey, it is close 'nuff. Don't use
- >>straight propane, or the pressures will be too high.
- >
- >So what are the cons? I imagine that combination is a tad flammable.
-
- See above.. doesn't make anybody any money.
-
- >--
- >Griff Miller > miller@monarch.wg3.waii.com < use this for email.
- >
- > *** My opinions are mine, not Western's. ***
- >
- > "The fear of the Lord is the beginning of knowledge, but
- > fools despise wisdom and discipline." - Proverbs 1:7
-
-
- --ghg
-