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Need formula re time required to dissolve gas into liquid

  1. Sep 14, 2008 #1
    Hello; I'm new here and this is my first post. I think I've done all that I can do before posting this: I've spend a lot of time searching for the answer myself through Google; I've read all of the sticky posts here; and then I did a search of your post archives but couldn't find an answer.

    I'm looking for a formula (or graphs or charts) to permit me to predict how much gas will dissolve into a soluable liquid based on the following variables:
    1. Time
    2. Pressure
    3. Partial Pressure
    4. Volume of Liquid (and of gas, if necessary)
    5. Surface Area of liquid exposed to pressurized gas
    6. Specific Gravity (if that makes a difference)

    Now, my specific concern is to determine how long to apply pressurized CO2 to 'force-carbonate' beer in a brewpub or microbrewery we are considering. I have charts which tell me, for example, that to reach my target carbonation level of 2.5 volumes (atmospheres) of CO2 at 32F, then I need 8.2 psi pressure, but they don't explain how long it will take. I know that carbonation will occur quicker with increased pressure, and that surface area where gas and liquid are in contact is a factor, too. I would like a formula that could tell me, for instance, how long it would take to reach 2.5 volumes if I apply 30 psi at 32degreesF in a 10 barrel tank (310 gallons) with a surface area of 1,018 square inches.

    Thanks for any help.


    Bill Velek
  2. jcsd
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