Weight of CO2

[tinman0]

How much does 10 litres of CO2 weigh?

[speedchick]

Does this help

Suppose you have a 1kg capacity fire extinguisher.
That is 1kg of liquid CO2
The weight of a mole of CO2 is 44g so you know that you have nearly 23 moles of gas.
At room temp and pressure those 23 moles will occupy (23x24) 552 liters.


NOW just use PV/T to see how many actuations you will get.

Assuming P1 x V1/T1=P2 x V2/T2

Where P1 is atmospheric pressure (1 bar)
V1 is the volume of gas 550litres
T1 is room temp 293K = Degrees Kelvin
P2 is ram pressure which I will guess at 15 bar
V2 is what you wanted to know
and T2 is working temperature which I will guess at
280K

SO bung that all into the equation and you get:-
1x550/293=15xV2/280 therefore V2 is 35litres
which in a 60mm diameter ram with a 200mm
stroke would give 62 activations ideally.( Opening stroke only )

Of course things are very different if you are
using liquid CO2 in your cylinder.......



Therefore ....1 kg of liquid co2 will give you :-

35 liter's of gas at 15 bar / 225 p.s.i , 52 liter's at 10 bar / 150 p.s.i. and 78 liter's at 100 p.s.i

[Yugguy]

speedchick said:

Does this help

No cos she was asking about weight.

[speedchick]

No but if you look at the last bit, it gives the litre(age) of different amounts in weight at different pressures, so can that not be turned round? (my chemistry is real rust at the moment)

[GreenV8S]

tinman0 said:

How much does 10 litres of CO2 weigh?

What temperature/pressure conditions? If it's ten liters of gas at 1 bar and room temperature, hardly anything. If it's dry ice it could weigh several kilos.

[tinman0]

Yugguy said:

speedchick said: Does this help No cos she was asking about weight.

she?

[tinman0]

GreenV8S said:

tinman0 said: How much does 10 litres of CO2 weigh? What temperature/pressure conditions? If it's ten liters of gas at 1 bar and room temperature, hardly anything. If it's dry ice it could weigh several kilos.

room temperature, sea level pressure.

[tinman0]

speedchick said:

No but if you look at the last bit, it gives the litre(age) of different amounts in weight at different pressures, so can that not be turned round? (my chemistry is real rust at the moment)

yeah, i've used your first bit in reverse to get the bit i wanted. i think. thx.

[zoidberg]

At 298 Kelvin, its density is 1.977 kilogram/cubic meter, which is 0.001977 kilogram/litre.

Litres * 0.001977 kilogram/litre = kilograms

Therefore 10 litres = 0.01977 kg