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Date: 28 May 2006 15:50:25
From: tripkings@gmail.com
Subject: Max. pressure from a C02 charger?
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Does anybody know what the maximum pressure a C02 charger/inflator with
a 12 gram cartridge can put in a 2 / 3 liter pet bottle?
I've built a 3 liter mini keg tap and tested it with a bicycle pump on
30 psi. (not knowing what kind of pressure the pet bottle can hold) I
was trying to decide if I should build a pressure gauge into it when I
attach the C02 charger but I didn't see any in the examples where
people have built them before.
Anyway......
I just happened to see on Myth Busters during a test they were doing
that 2 liter PET bottles did not explode until they pumped them up to
150 psi. So I was wondering if a 12 gram cartridge could pressure over
150 psi or not.
Anybody know?
John F
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Date: 28 May 2006 20:19:17
From: tombiasi
Subject: Re: Max. pressure from a C02 charger?
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<tripkings@gmail.com > wrote in message
news:1148856625.689542.259730@j33g2000cwa.googlegroups.com...
> Does anybody know what the maximum pressure a C02 charger/inflator with
> a 12 gram cartridge can put in a 2 / 3 liter pet bottle?
>
> I've built a 3 liter mini keg tap and tested it with a bicycle pump on
> 30 psi. (not knowing what kind of pressure the pet bottle can hold) I
> was trying to decide if I should build a pressure gauge into it when I
> attach the C02 charger but I didn't see any in the examples where
> people have built them before.
>
> Anyway......
>
> I just happened to see on Myth Busters during a test they were doing
> that 2 liter PET bottles did not explode until they pumped them up to
> 150 psi. So I was wondering if a 12 gram cartridge could pressure over
> 150 psi or not.
>
> Anybody know?
>
> John F
>
Ah, a problem of physics.
You have a known volume of CO2 at a known temperature. ( The cartridge
contains 12 Grams of liquid CO2 at a known volume)
If you expand that volume into 2 liters or 3 liters what will be the final
pressure at the same temperature?
Consider ideal conditions.
After I have a few and cook some ribs on the grill I may feel like doing
this problem.
Tom
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Date: 29 May 2006 23:09:29
From: sylvan butler
Subject: Re: Max. pressure from a C02 charger?
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On 28 May 2006 15:50:25 -0700, tripkings@gmail.com <tripkings@gmail.com > wrote:
> that 2 liter PET bottles did not explode until they pumped them up to
> 150 psi. So I was wondering if a 12 gram cartridge could pressure over
> 150 psi or not.
Without trying to calculate gas volumes, I expect around 600psi at room
temperature. In other words, I think the 12gm cartridge has more than
enough liquid CO2 to equalize pressure into a 2 or 3 liter bottle.
sdb
--
Wanted: Omnibook 800 & accessories, cheap, working or not
sdbuse1 on mailhost bigfoot.com
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Date: 30 May 2006 06:14:35
From: tombiasi
Subject: Re: Max. pressure from a C02 charger?
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"sylvan butler" <ZsdbUse1+noZs_0605@Zbigfoot.Zcom.invalid > wrote in message
news:slrne7nks9.t95.ZsdbUse1+noZs_0605@sdba64.internal...
> On 28 May 2006 15:50:25 -0700, tripkings@gmail.com <tripkings@gmail.com>
> wrote:
>> that 2 liter PET bottles did not explode until they pumped them up to
>> 150 psi. So I was wondering if a 12 gram cartridge could pressure over
>> 150 psi or not.
>
> Without trying to calculate gas volumes, I expect around 600psi at room
> temperature. In other words, I think the 12gm cartridge has more than
> enough liquid CO2 to equalize pressure into a 2 or 3 liter bottle.
>
I don't think so.
1.8 Grams will expand to 1 liter (1 atm) at 77 F.
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