Quote:
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Originally Posted by joeyk803c
High Pressure has less volume of air. LP has more.
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so by that logic a 10 ci camber at 14.69 PSI has more air in it as a 10ci camber at 29.38 PSI.
but that is not true cause the 2nd contian has twice the pressure and therefor must have twice as much air in it
Cause by voulme of air i mean if i were to let it expande to 0 PSI (or about the same as the air around us) not the volume of the container it is in
And the reson for a 4500 tank lasting longer then a 3000 PSI tank of the same size is cause your packing more air into the same sized space.
and as for the math
1 atmoshpere is = ~15 PSI at sealevel (14.69594878 is the real value)
and sence inorder to messure pressure you have to have differance so in reality the air out side a tank is at 15 PSI while the air in a tank is X+15PSI but the extra 15PSI is cancled out whe you solve with algebra
So a tank that is filled to 4500 PSI will have about ~300 times it volume of air compressed in it. So a 68ci tank will have ~20400 CI worth of air in it.
But we can't use the air at the 4500 PSI cause it would exert too much force on the paint ball and cause it to to be like a can of spray paint. This is cause for the average paint ball it has about 3/4 of an inch of serface area that the air hits when it fires so that is about 3375 Pounds of force hitting that ball just from the air.
So the idea is to lower it to a more useable pressure like say 120 PSI (operation presure of my ION) with a reg or series of regs. This means that instead of the 3375 pounds hitting the little 3 gram ball I now have a more reasonable 90 pounds of force hitting the ball from the air. but his means that a the air under the 120 PSI will only expand about 8 times.
So if i have a camber that holds 1 ci of air @ 120 PSI when it is opened it will fill a ballon with about 7ci worth of air (The 1ci stays in there cause the total volume is now 8ci)
and some things to keep in mind is that a 16 inch barrel that is .68 caliber has a total volume of 11.62 ci worth of space (this is if it has no porting Volume=Length x Pie x Radius Squared). but the ball will only spend about 0.0001 seconds in the barrel speeding up.
But if you want a EZer way of expaining this here
p1*v1 = p2*v2
p1 = tank pressure + 15
v1 = volume in tank (ci)
p2 = 15 PSI (~1 atomsphere)
v2 = equivelent volme of air @ p2
Quote:
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Originally Posted by joeyk803c
High Pressure and LP generally have nothing to do with efficiency.
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Yes and no. It comes down to a few other things but i am too tired to get into them atm
dynasty shocker
of air compressed into it. but a 3000 will only have 13881.38ci
