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View Full Version : Compressed air vs. N2



pyerke01
03-26-2008, 12:55 PM
Im looking to move away from CO2 and was wondering what works better with an Automag; Compressed Air or N2?

quick_spyder
03-26-2008, 02:47 PM
They're the same thing.

Hilltop Customs
03-26-2008, 03:09 PM
compressed air is composed of:

Nitrogen: 78.084 %
Oxygen O2 20.9476 %
Argon: 0.934 %
Carbon Dioxide: 0.0314 %
Neon: 0.001818 %
Methane: 0.0002 %
Helium: 0.000524 %
Krypton: 0.000114 %
Hydrogen: 0.00005 %
Xenon: 0.0000087 %
and more
just like the air your breathing right now.


For the automag, they both provide the same benefits over CO2.

SchoolU101
03-26-2008, 03:27 PM
To clarify, it's all really just compressed air. Some people call it nitro because it sounds cool and air is mostly nitrogen. But I've never seen a field that fills pure N2. But even if they did, a regular compressed air tank would work.

michbich
03-26-2008, 03:38 PM
To clarify, it's all really just compressed air. Some people call it nitro because it sounds cool and air is mostly nitrogen. But I've never seen a field that fills pure N2. But even if they did, a regular compressed air tank would work.

Much more expensive for a feild to fill N2 compared to air.

MANN
03-26-2008, 05:44 PM
Much more expensive for a feild to fill N2 compared to air.

QFT

LK-13
03-26-2008, 06:31 PM
compressed air is composed of:

Nitrogen: 78.084 %
Oxygen O2 20.9476 %
Argon: 0.934 %
Carbon Dioxide: 0.0314 %
Neon: 0.001818 %
Methane: 0.0002 %
Helium: 0.000524 %
Krypton: 0.000114 %
Hydrogen: 0.00005 %
Xenon: 0.0000087 %
and more
just like the air your breathing right now.


For the automag, they both provide the same benefits over CO2.

no point in being that exact.
the percentages will change with each cc of atmosphere you analize.
better way to look at it is
compressed air is composed of
78% nitrogen
20% oxygen
2% mixed gasses with CO2 being the largest component
on average, but all numbers are subject to change.

michbich
03-26-2008, 08:01 PM
no point in being that exact.
the percentages will change with each cc of atmosphere you analize.
better way to look at it is
compressed air is composed of
78% nitrogen
20% oxygen
2% mixed gasses with CO2 being the largest component
on average, but all numbers are subject to change.

Let's not be picky, we understood what he was to saying... That most of the air is N2 to begin with.

Hilltop Customs
03-26-2008, 09:06 PM
no point in being that exact.
the percentages will change with each cc of atmosphere you analize.
better way to look at it is
compressed air is composed of
78% nitrogen
20% oxygen
2% mixed gasses with CO2 being the largest component
on average, but all numbers are subject to change.

but it was easier for me to search for "air composition" and copy/paste than type what you just said :p

its true that the numbers to vary but at sea level, with many samples, the numbers I posted will be the average. Only reason I even searched for it was because I couldnt remember the lower % gasses.




On another note, pure compressed N2 would be much safer to use since there would be no oxygen content in it. Ever hear of the air tank explosions that have happened because of people putting oil in the fill nipple? If we were using N2 instead of compressed air those explosions wouldnt have been possible.

michbich
03-26-2008, 09:11 PM
(...)

On another note, pure compressed N2 would be much safer to use since there would be no oxygen content in it. Ever hear of the air tank explosions that have happened because of people putting oil in the fill nipple? If we were using N2 instead of compressed air those explosions wouldnt have been possible.

You sir are correct. No O2 = no combustion

N2 itself is very stable, it's caused by it's triple bond. For example, it goes through gas and deisel engines and comes out unchanged (only hotter).

questionful
03-26-2008, 09:17 PM
Which gas is heavier at the same volume, temperature, and pressure?

michbich
03-26-2008, 09:35 PM
Which gas is heavier at the same volume, temperature, and pressure?
If the volume, temp and pressure are the same. You can use PV=NRT to determine that the amount of atoms will be the same concidering they both act as perfect gasses.

Concidering you have the same amount of molecules (lets say 1 mol):

1 mole = 6,022 x 10@23 molecules
N2=28g/mol
O2=32g/mol
lets neglect the others

air:
80x28=2240g
20x32=640g
So 1 mol of air would weight 2880g.

pure N2
100x28=2800g
So 1 mol of N2 would weight 2800g.


N2 will be lighter than air with the same amount of moles.

questionful
03-27-2008, 02:11 AM
Well after skimming through a quick google (http://www.combro.co.uk/nigelh/diver/vdw.html), I'm going to drop it. It looks kinda complicated. :rolleyes: And I think if there was a gas better suited to firing projectiles, someone would have thought of it by now.

Spider-TW
03-27-2008, 08:19 AM
Just don't vent a nitrogen tank inside of a closed up car; no O2 is bad for you. :(