Hi all,I hope I'm not too way off base here in asking for advice, but youguys seem to know everything!! :-)Boss at work bought a $99.00 environmental chamber and told me to"make it work".( this one's sibling:)When we recieved it, it didn't "do" anything.I kept flipping the switch back & forth and eventually some stickyrelays started "working", that is, the heater /fan started working andthe gas solenoid clicked in - depending on the temperature dial.A label on the back says it is to be cooled with liquid CO2.Somebody retrofitted it with a 300PSI solenoid - We have since thengotten a 1000PSI liquid CO2 solenoid.The wiring in it is OLD and BRITTLE, BTW.A few hours ago my boss is on my ass to get the cooling working bynext week.Now I have a basic oxy/acetylene rig at home, but have never playedwith liquid CO2.I'm not exactly sure of what fittings/tubing to use ( copper,stainless, double flare??).Also, the boss says that CO2 isn't toxic, so therefore we aren't goingto vent it.(it's setup in the back of a kitchen, where I work {our "lab"}- withzero ventilation)I don't mind doing potentially dangerous stuff in my own garage ( withthe door open), but this is an office full of people.Am I way off base telling him to hire a professional to do the gasfitting ( and leave the premises when he runs it without ventilation?)Just wanted another opinion.(And yes, I am looking for another job)Thanks in Advance!B

So the wiring is already a fire hazard! And if the wiring is old and brittle I would bet the seals are the same.NOT a good thing. If you don't know how to work with it tell him to get someone else to set the damn thing up.VERY, VERY wrong. CO2 IS toxic. It will KILL YOU easily enough if it builds up. Your boss is an IDIOT.How can carbon dioxide affect my health?Carbon dioxide in its gas form is an asphyxiant, which cuts off the oxygen supply for breathing, especially in confined spaces. Exposure to concentrations of 10 percent or more of carbon dioxide can cause death, unconsciousness, or convulsions. Exposure may damage a developing fetus.Exposure to lower concentrations of carbon dioxide can cause hyperventilation, vision damage, lung congestion, central nervous system injury, abrupt muscle contractions, elevated blood pressure, and shortness of breath. Exposure can also cause dizziness, headache, sweating, fatigue, numbness and tingling of extremities, memory loss, nausea, vomiting,...

Enviro chamber liquid CO2 question?

Oct 31, 2008 24 Replies

Rate this thread:

Mark Rand 17 years ago

I typed Draeger as in Dräger Tube but it came out as Deager.

Bloody keyboard can't spell :-|

Mark Rand RTFM

Vote

aws 17 years ago

you must vent he co2 out side. It is heavier than air and in concetrations of 2% will kill you. Call liquid air-linde compant they do a lot of this. You can get cylinders with both a liguid and a gas tap.

Vote

Pete C. 17 years ago

formatting link

> >> >

Dry ice is -109.something I believe.

Vote

Joseph Gwinn 17 years ago

I do recall reading such articles, but a trip to Google revealed only hints, perhaps a residue of pre-internet medical approaches. The standard of care for carbon monoxide poisoning is now the hyperbaric chamber, at 3 atmospheres. Hyperbaric chambers were uncommon 20 years ago, so it does fit together.

Joe Gwinn

Vote

Pete C. 17 years ago

CO2 in the O2 probably dates back to the days of iron lungs...

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required