On Sat, 19 Jul 1997, David Massey wrote:
> joe worsley <worsley@ebicom.net> writes:
>
> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Snip >>>>>>>>>>>>
> Along with using compressed air to test for leaks this is considered to
> be very dangerous by all the experts.
>
>
And, besides, it's a greenhouse gas, so you really aren't gaining anything
by substituting it for CFC's.
Jim Ruwaldt
'72 TR6 CC79338U(being restored)
> Barry Wolpoff wrote:
> >
> > This guy is out of his mind. I hope no one else out there is as loony as
> > this guy.
> >
> > ----------
> > > From: jacksone@ix.netcom.com
> > > To: Jankowski@mindless.com; edgr@mbari.org
> > > Cc: tr8@mercury.lcs.mit.edu
> > > Subject: Re: R12 to Propane Conversion
> > > Date: Wednesday, July 09, 1997 4:37 PM
> > >
> > > I've been running my 80 TR7 airconditioning on propane for more than a
> > year now. The system has a
> > > slow leak that I can't seem to find so about every month I have spend
> > another dollar for more
> > > propane. The propane works better than the R-12 that used to get for
> > it.(still $6 a can in
> > > Tijuana.)
> > > The propane will work with any oil or even any remainig R-12
> > >
> > > Tom Jackson
> > >
> - --
> Joe Worsley
> 80 TR8 DHC
> 72 TR6 (sleeping until restoration)
> Tupelo, MS
> <<<<<<<<<<<<<<<<<<<<<<<<<<<< End Snip >>>>>>>>>>>>
>
> Hey guys, how much propane is in the system any way? 2 lbs?
>
> That is about how much propane is in 12 cans of spray paint! Yes I said
> spray paint. Since 1968 the manufacturers stopped using Freon as a
> propellant and substituted propane. That is why it says on the cans
> "Do not use near fire or flame. Do not dispose of in fire." It is an
> excellent propellant and because of the same characteristics it is an
> excellent refrigerant. And though propane is a green house gas, it is
> not a chlorinated hydrocarbon (ozone depletor).
>
> 2 lbs of propane has less explosive hazard as 1/2 gal of gasoline.
> And if the propane escapes from the system, it assumes a gaseous
> form which has a much lower density than gasoline has at STP (Standard
> Temperature and Pressure, meaning 1 atmosphere (14.7 psia) and 70
> degrees F.) Therefore in the event of a leak an enclosed space
> will contain a lot more explosive hazard from liquid than gas.
>
> A leak of 2 lbs per month will dissipate harmlessly and the propane
> within the system is devoid of oxygen and thus will not burn. I think
> the only reason it is not used for this application is because of the
> public perception that it is dangerous. But remember the earliest
> refrigerant was ammonia gas (NH3) which is poisonous! Thank goodness
> we have moved on from there.
>
> I find it confusing that the driving public willingly accepts the
> hazard of driving around with enough stored chemical energy to
> propel them 500 miles horizontally (or many thousands of feet
> vertically) but shriek at the thought of a little bit of propane
> in the cooling system. And the hazard from gasoline is dwarfed by
> the hazard of driving small cars with little crash worthiness on roads
> shared by brain dead, cell phone using, book reading dolts driving
> minivans, sport utes and plush, 4X4 pickup trucks!
>
> Thanks. I feel much better now. I'll get off of the soapbox now.
>
> Dave Massey St. Louis, MO USA
>
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