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Old 08-05-2011, 10:38 PM #1
Jelly Donut
 
 
Join Date: Jul 2011
CO2 and consistency.

I'm assuming my info is correct and it there are any engineers out there and my info is in error please correct me. Quotes is info copied from best source explaining this.

"When liquid CO2 is discharged into the atmosphere its physical properties dictate that it must instantaneously change to solid and gas, both at -109.20F. These are the only two forms of CO2 that can exist at atmospheric pressure and about 1kg of liquid CO2 injected gives 0.5 Kg of CO2 snow which should absorb 228 BTU before it is completely converted into 1Kg of gas at -109.20F"

So 228/1000= .228 BTU per gram Liquid to -109.20F cold gas.

"Further in order to raise temperature of 1 Kg. Of gas at -109.20 F by 10 F, 0.4BTU has to be absorbed from the surrounding."

A change of 196 degrees F to maximum pressure at 87 degrees F according to the navy CO2 chart.

So 19.6 times .0004 equals .00784 BTU per gram.

Add the two equals .23584 BTU per gram to reach maximum operating pressure at 87 degrees F.

.23584BTU times 12 for the capacity of Jet cartridge, equals 2.83BTU

Now the aluminum body...

Aluminum has a specific heat of 0.22BTU/lb

Meaning that it takes .22 BTU to lower the temperature one degree per pound.

Now… 1 degree change of CO2 equals 5psi. See navy CO2 chart.

See what the issues are. If we really want to improve everything in this marker this is the best way to do it, as I see it.

If there was a way to help the body of marker transfer heat to the gas for optimum performance.

Any ideas………………

Last edited by Jelly Donut : 08-10-2011 at 10:20 PM. Reason: Math
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Old 08-12-2011, 10:30 PM #2
Jelly Donut
 
 
Join Date: Jul 2011
After finding interesting info on, how and why computer CPU's are cooled. The slight imperfections in hard surfaces when connected hold and trap air, one of the best insulators, duh. Taking from the same school of thought on CPU cooling using thermal paste between the CPU and radiator is a great idea. The thermal pastes for computers are kinda, actually very expensive and not ideal for markers anyway. Decided on the formulation and just waiting on the ingredients. Going to use it on all the parts that don’t move and come in contact with the gas and body. Hoping to get more that the 60 shot currently getting or higher velocities.

Last edited by Jelly Donut : 08-12-2011 at 10:40 PM.
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Old 08-13-2011, 03:12 PM #3
Cakeslob
 
 
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I had an idea. Its not c02 related. Im also not looking up info on this topic( at the moment) to see if its safe/viable buttt....


8 gram n2o chargers could fit inside something, idk how it would work (aside being a sweeet waste of n2o) but they come in disposable chargers and i wanted to look into that more.


I digress, the co2 navy chart, can we not link that on the nation or something? I would like to give this some more looking into as well

Last edited by Cakeslob : 08-13-2011 at 03:13 PM. Reason: Spelling
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Old 08-13-2011, 09:33 PM #4
Jelly Donut
 
 
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Like I've said before Co2 is a blessing and curse for paintball. Can you get 6.5 liters of gas at standard atmospheric pressure crammed into that small cartridge. The wall of the cartridge even using carbon fiber and adapter to refill it would completely take the entire area of the cartridge. Co2 is king: ha, another joke, I'm really funny, for this marker.

Last edited by Jelly Donut : 08-13-2011 at 09:37 PM. Reason: Add image
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Old 08-13-2011, 09:36 PM #5
Jelly Donut
 
 
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Here it is.....
http://www.warpig.com/paintball/tech...dynamics.shtml


Then click on the first link
"http://www.warpig.com/paintball/technical/gasses/co2pv.gif"

Last edited by Jelly Donut : 08-17-2011 at 09:49 AM. Reason: Verified URL for image.
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Old 08-13-2011, 09:52 PM #6
Jelly Donut
 
 
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Or are you thinking about a pre-existing cartridge.
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Old 08-14-2011, 02:15 PM #7
Cakeslob
 
 
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Pierce-able 8g n2o cartridges used for food industry stuff . just kicking ideas around
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Old 08-14-2011, 05:35 PM #8
Jelly Donut
 
 
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Looked at some info and it seems that it is a liquid state as well and would require heat to go to vapor then gas stage. Keep up the research though. I wonder the BTU's and volume of the gas at standard atmosphere pressure per 16 gram. Physical dimension are very close. N2O not approved for anything other than food, bicyclists use to inflate tires. Molecular weight is almost identical. If psi is close, could be great idea. N2O is laughing gas, now try and get that approved for use in paintball guns.......... Shooting your self for fun, paintball up da nose, eh..........
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Old 08-16-2011, 10:03 PM #9
Jelly Donut
 
 
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Well this sucks, the lab sent the stuff, mad scientist laugh, to the wrong address, doh!!!!!!
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Old 08-17-2011, 06:43 PM #10
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The word C02 and consistency don't go together. if you want your gun to shoot consistently and more accurately don't bother with co2. you can get a compressed n2 tank for about 30$ and it will make all the difference. I used to play co2 for years (don't know why) until I finally smelled the greener grass on the other side of the hill. don't do it to yourself.
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Old 08-19-2011, 08:59 PM #11
Jelly Donut
 
 
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HPA is is great, use it on my speedball marker. Co2 on my scenario markers. Not much of choice here though, works off of 12 gram Co2 cartridges.

Last edited by Jelly Donut : 08-19-2011 at 09:03 PM.
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Old 08-22-2011, 11:19 PM #12
Jelly Donut
 
 
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Still waiting...
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Old 08-29-2011, 08:11 PM #13
Jelly Donut
 
 
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Finally got it.
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Old 08-29-2011, 11:04 PM #14
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wait what just happened? what did you get/receive from the lab? some n2ooooooo yeah or what?

Also, some **** I did some reading on says me that co2 has a higher vapor pressure than n2o does. It looks like almost 100psi difference . I dont remember where I was going with this post, been writing it on/off for around an hour. I just like the sound a 16g n2o cartridges. Really like the sound.

On the weekend I got around 80 shots per co2, Pretty pretty decent.

Last edited by Cakeslob : 08-29-2011 at 11:05 PM. Reason: im in over my head right now
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Old 08-30-2011, 08:33 PM #15
Jelly Donut
 
 
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Waiting on compounds to make paintball Co2 thermal grease, calling it Top Cock.

80 shots, not bad. was that over a lengthy period of time would you say. Most people are reporting 60 shots like me. Less than five minutes for my 60 shot count. Careful aiming shooting, reloading magazine etc.....

What Im trying to do is give the 80 shot count in less time. So basically improve the shot count and reduce the cost of 12 grams by 25%.

Last edited by Jelly Donut : 08-30-2011 at 08:36 PM.
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