From the HBD Archive
From: smith%8616.span@Fedex.Msfc.Nasa.Gov (Vote Libertarian in '92!)
Subject: Bubbles in your Jockeys!
Date: 1992-07-09 13:54:16 GMT

Russell Owen <OWEN@VAXE.NIEHS.NIH.GOV> wrote:
>Al (korz@iepubj.att.com) wrote
>>"I suspect you will have trouble ... since the solubility of
>>CO2 varies greatly with temperature," saying that he had
>>trouble keeping the cold beer carbonated.
>Gases are *more* soluble in water as temperature drops,
>and I suspect that beer is enough like water for this to hold
>true in brew.
>Specifically, the solubility of CO2 in H2O (ml per 100 ml @ 760 mmHg)
>is 171 @ 0 degrees C,
>is 88 @ 20 "
>and 36 @ 60 ".

Okay, I'm going to show my ignorance here. It seems to me that if you
have good carbonation in a warm keg, then cool the beer as it comes out,
you'll have the CO2 happily in solution with no desire to come out of
solution (i.e. produce bubbles). Wouldn't you need to have extra
pressure in the keg with a jockeybox setup, to insure proper carbonation
at the dispensing temperature? Ack, that would cause dispensing
problems unless you had a second regulator between the keg and the
jockeybox, wouldn't it? Hey, just because I work with applied
thermodynamics every day doesn't mean I know diddly about kegging. :)


4-aminobiphenyl, hexachlorobenzene/Dimethyl sulfate, chloromethyl methylether/
2, 3, 7, 8-Tetrachlorodibenzo-para-dioxin, carbon disulfide/Dibromochloropane,
| James W. Smith, NASA MSFC EP-53 | SMITH%8616.span@fedex.msfc.nasa.gov |
chlorinated benzenes / 2-nitropropane, pentachlorophenol / Benzotrichloride,
strontium chromate/1,2-dibromo-3-chloropropane/Watch it run straight down.....

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