Removing JB Weld?

Or a really big CO2 cartridge. An upside down can of air like used for
dusting out computers held upside down will squirt liquid CO2 at around -100
F. If you try this wear a very thick and well padded glove.

Tony

Liquid CO2? Are you sure that those computer dusting cartridges arent
using some sort of flourocarbons?





I've heard this old saw so often even I was beginning to believe it.
While it is based on fact, it's not seriously practical.

When released (in)correctly, it is true that a CO2 extinguisher will
make a pile of dry ice. But it's a very small pile compared to the
amount of CO2 gas released. It would have to be a Very Very Big (TM)
can in order to chill a that big of a slug of steel to below 0.


Discharging a CO2 extinguisher does not generate dry ice. The
expansional cooling of the compressed gas causes moisture in the air to
condense and freeze. The ice generated is the typical wet variety. Check
your sources.


Simple thermodynamics, dudes.

Sounds oversimplified.



Richard (woolly coat and all) Lamb

Dave

"Dave S" wrote in message
nk.net...


Or a really big CO2 cartridge. An upside down can of air like used for
dusting out computers held upside down will squirt liquid CO2 at
around -100
F. If you try this wear a very thick and well padded glove.

Tony

Liquid CO2? Are you sure that those computer dusting cartridges arent
using some sort of flourocarbons?

Yep, chlorofluorocarbons are banned.

Tony

Liquid CO2? Are you sure that those computer dusting cartridges arent
using some sort of flourocarbons?

Yep, chlorofluorocarbons are banned.

It isn't CO2, (or pressurised nitrogen). It's hydrocarbon. Read one of those
cans, there will be a fire warning.

Yes, some sort of propane...

--
Dan D.
http://www.ameritech.net/users/ddevillers/start.html


..
"G EddieA95" wrote in message ...
Liquid CO2? Are you sure that those computer dusting cartridges arent
using some sort of flourocarbons?

Yep, chlorofluorocarbons are banned.

It isn't CO2, (or pressurised nitrogen). It's hydrocarbon. Read one of those
cans, there will be a fire warning.

From: "Blueskies"
Date: 7/16/2004 6:26 PM Central Daylight Time
Message-id:

Yes, some sort of propane...


Not to pick a nit, but there's only one propane: C3H8 just as there's only one
octane: C8H8.

Trivia for today: the octane rating currently used in gasoline was once a
mathematical formula based on octane.

Dan, U.S. Air Force, retired

Yes, some sort of propane...


Not to pick a nit, but there's only one propane: C3H8 just as there's only
one
octane: C8H8.

Octane is C8H18.

And there are substituted propanes.

On 16 Jul 2004 04:41:17 GMT, (G EddieA95) wrote:

Liquid CO2? Are you sure that those computer dusting cartridges arent
using some sort of flourocarbons?

Yep, chlorofluorocarbons are banned.

It isn't CO2, (or pressurised nitrogen). It's hydrocarbon. Read one of those
cans, there will be a fire warning.

My can of Tornado FREE says 100%Tetraflouroethane
Non Flamable but contact with high heat causes decomposition to toxic
vapour.

"Anthony" wrote in message
...

"Dave S" wrote in message
nk.net...


Or a really big CO2 cartridge. An upside down can of air like used
for
dusting out computers held upside down will squirt liquid CO2 at
around -100
F. If you try this wear a very thick and well padded glove.

Tony

Liquid CO2? Are you sure that those computer dusting cartridges arent
using some sort of flourocarbons?

Yep, chlorofluorocarbons are banned.

Tony
You can still buy Halon fire extinguishers. The manufacture of the halogen
compounds is now banned but existing stores may still be sold.