Subject: Al's Jockeybox
Date: 1992-07-08 12:50:00 GMT
Al (firstname.lastname@example.org) 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 ".
Perhaps the length of the tubing in the "jockeybox" is the problem.
The amount of beer sitting in the tubing and the amount of time
any sip of beer spend sitting in the tubing increase with tubing
length. 10 feet of tubing with a cross-sectional area of 1 cm2
will easily accommodate an entire glass of beer.
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