it sounds to be a nice contest, but do you have advice to give to find easyly CO2 gas ?
thx
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it sounds to be a nice contest, but do you have advice to give to find easyly CO2 gas ?
thx
ask at "welding supplys" <-- I don't know the corect word.Quote:
Originally Posted by zytrahus
They should have CO2 gas
is CO2 used for soldering ?
It is used as a protecticve gas for mig welders etc. very cheap...
but unfortunately a cylinder and regulator are not..Quote:
Originally Posted by hatemi
what is the pressure in a B5 cylinder (about 3.7Kg of CO2) ?
if the pressure is not very high, no need to regulate, we could simply fill in like with propane...
About 900psi.
what kind of regulators are used ?
There is a Co2 regulator as used on soda fountian post mix and premix. Like at resturants.
Most tanks are 850psi and can be used with any inert gas regulator (regulator for argon, nitrogen, co2 etc).Quote:
Originally Posted by zytrahus
Propane is only ~120psi, so the use of a regulator is manditory unless you want a rupture.
with my gas lead its lower pressure, i drill the hose exit with 1/4 inch and its about 100psi out, no regulator.
would an oxygen regulator fit a bottle of co2?
Quote:
Originally Posted by chilly1
get a keg set :toast:
can i still join the competition?
Yes the competetion is still open and it will be going on for a couple months. It takes time to design/build and test/tune these things. Good luck. Work Safe
Thanks. Oh, and I'll work safe. :)Quote:
Originally Posted by chilly1
I've got a few ideas. This competition will be fun I think. :)
could CO2 extinguishers work in this CO2 fill application ?
you'd have to make an adapter for it. Also the co2 extinguishers might have powder in them but im not sure..
about powder, I asked it today, they're only made of CO2 under pressure. But I need to adapt the exhaust, that's for sure :toast:Quote:
Originally Posted by gkiing
Pretty sure the "powder" you see from CO2 extinguishers is solid CO2 as a result of adiabatic expansion cooling the gas.
im preety sure the powder inside them is smth similar to baking soda. you will run in to trouble when using them.
use normal drinking / welding co2.
OK looked it up, from http://www.fire-extinguisher101.com/
Quote:
Carbon Dioxide (CO2) extinguishers are used for class B and C fires. CO2 extinguishers contain carbon dioxide, a non-flammable gas, and are highly pressurized. The pressure is so great that it is not uncommon for bits of dry ice to shoot out the nozzle. They don't work very well on class A fires because they may not be able to displace enough oxygen to put the fire out, causing it to re-ignite.
Knowing the proper way to use a fire extinguisher is vital. CO2 extinguishers have an advantage over dry chemical extinguishers since they don't leave a harmful residue - a good choice for an electrical fire on a computer or other favorite electronic device such as a stereo or TV.
How can an adapter or any sort of "tap" be made to control the flow of CO2 from an extinguisher? Anyone got any ideas? I think the hoseclamp + shrader is out due to the pressure.. lol
this is what i hope to due.Quote:
Originally Posted by zytrahus
first one i got was the power one, keep that one for fires.
im trying to get a c02 one myself, they are around just have to get right price.
the bigger bottles have screw fittings, i plan to braze steel flex hose into that with a fitting that goes into a 9kg bottle, then fill 9kg a little at time and charge, repeat over and over.
i also have oxygen regulator might mod that to fit to fire extinguisher and regulate to to usable pressure straight to gauges, we will see.
I should have a CO2 extinguisher today, hope it will work. What is CO2 pressure inside a extinguisher ?
full on mine is 1000kpa.