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Old 22-01-2005, 12:32 AM
Dan White
 
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"spiral_72" wrote in message
oups.com...
Well, if I figured this right:

P = n * R * T / V Whe

P = pressure in atm
n = amount of substance in moles
R = Thermal expansion ( 1atm / K*mol )
T = Temp change in Kelvins
V = Volume of a sealed container in Liters

( n ) for CO2 is 22.727mol
( R ) for CO2 is 0.08206
( T ) is 298K
( V ) is 6.81322 Liters

Ignoring the air present in the container when it was sealed, and
introducing 1 Kg (2.2lbs) of dry ice in my 6.813 L tank, while the air
in my living room is 24 C (75 F)
final pressure inside the tank will be 8238.7 psi.

Oh, crap.


I get about 1200 psi. Your formula gives you about 81 atm. 1 atm = 14.7
psi.

You should be fine if you go with 1" thick steel.

dwhite


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Old 23-01-2005, 12:08 AM
spiral_72
 
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Hey, you know what? You are right..... I went back and checked my
little engineer's book........ 1atm=14.7psi.......not 101.3psi
Thank you. If nothing else it makes me feel better about my tank

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Old 23-01-2005, 01:05 AM
Dan White
 
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"spiral_72" wrote in message
oups.com...
Hey, you know what? You are right..... I went back and checked my
little engineer's book........ 1atm=14.7psi.......not 101.3psi
Thank you. If nothing else it makes me feel better about my tank


Sure. You gonna give it a try?

dwhite


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