Hi,
I would like to carbonate up to 5 volumes of CO2 but the bottles available in my country can only support up to 3 volumes of CO2. The thing is I cannot see how that is a proper measure of a bottle's resistance if they don't mention the temperature of those 3 volumes. For example: By looking at a chart (Zahm & Nagel) @ 38ºF/3.33ºC, 3 volumes is 15 psi of pressure, while @ 72ºF/22.22ºC it is 40 psi of pressure. Let's say a bottle is resistant up to 45 psi, technically I could carbonate up to 5 volumes @ 38ºF/3.33ºC and not fear bottle bombs because the pressure would be 34 psi, a safe number significantly below the max of 45 psi; assuming I keep the bottle refrigerated at that temperature and there are no defects.
Instead, I've been thinking of canning since I've heard that cans can resist pressures of up to 90 psi, sometimes up to 100 psi. Meaning that if I carbonate at 5 volumes of CO2 @ 38ºF/3.33ºC, I would need 34 psi of pressure, and if I leave the can outside @ 72ºF/22.22ºC, the pressure would be 76 psi. In this case, below the max pressure and no fear of any problems.
What is the psi that those 3 volumes are referring to exactly? Correct me if I'm wrong but a bottle's resistance should be measured with pressure and not volumes of CO2.
I would like to carbonate up to 5 volumes of CO2 but the bottles available in my country can only support up to 3 volumes of CO2. The thing is I cannot see how that is a proper measure of a bottle's resistance if they don't mention the temperature of those 3 volumes. For example: By looking at a chart (Zahm & Nagel) @ 38ºF/3.33ºC, 3 volumes is 15 psi of pressure, while @ 72ºF/22.22ºC it is 40 psi of pressure. Let's say a bottle is resistant up to 45 psi, technically I could carbonate up to 5 volumes @ 38ºF/3.33ºC and not fear bottle bombs because the pressure would be 34 psi, a safe number significantly below the max of 45 psi; assuming I keep the bottle refrigerated at that temperature and there are no defects.
Instead, I've been thinking of canning since I've heard that cans can resist pressures of up to 90 psi, sometimes up to 100 psi. Meaning that if I carbonate at 5 volumes of CO2 @ 38ºF/3.33ºC, I would need 34 psi of pressure, and if I leave the can outside @ 72ºF/22.22ºC, the pressure would be 76 psi. In this case, below the max pressure and no fear of any problems.
What is the psi that those 3 volumes are referring to exactly? Correct me if I'm wrong but a bottle's resistance should be measured with pressure and not volumes of CO2.
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