pressure inside the CO2 cylinder
pressure inside the CO2 cylinder
(OP)
Friends,
What would be the pressure inside the cylinder if it is filled with 500 gram of liquefied CO2. The capacity of cylinder is 1 liter.
Thanks
What would be the pressure inside the cylinder if it is filled with 500 gram of liquefied CO2. The capacity of cylinder is 1 liter.
Thanks





RE: pressure inside the CO2 cylinder
RE: pressure inside the CO2 cylinder
Eric Hendrix, SET
NICET Certified
Design Manager
RE: pressure inside the CO2 cylinder
Regards,
DM
"Real world Knowledge isn't dropped from a parachute in the sky but rather acquired in tiny increments from a variety of sources including panic and curiosity."
RE: pressure inside the CO2 cylinder
At least from a theoretical point of view, the relation of pressure and density of CO2 at 25C (77F) is shown below.
or
It turns out as shown above that with a 500gr/m3 density (31.21 lb/ft3), CO2 is on a saturated state between liquid and vapor at 64.45 bar (935 psi).
RE: pressure inside the CO2 cylinder
RE: pressure inside the CO2 cylinder
Below the magic critical point of 31.1C, the pressure temperature line should follow the critical path line.
As the temperature changes, the pressure changes along that line when you have liquid and gas. So as you release gas the pressure and temperature falls until heat from outside heats up the liquid to then equalize the pressure.
So quantity is irrelevant so long as there is some liquid in a sealed container.
So for 25C the pressure is around 65 bar.
Beyond 31.1C it all gets a bit weird. (super critical) so can get higher pressures.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.