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20 years ago
does fermentation itself generate heat
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20 years ago
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20 years ago
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20 years ago
Kasper,
Thanks - do you know if this is this significant enough to raise the wort temperature by a couple of degrees in an insulated cabinet?
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20 years ago
Yep I have had a temp raise of 3-4 degrees C in an open room..
Cheers Kasper Denmark
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20 years ago
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20 years ago
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20 years ago
It's not so much that it will hurt your yeast as the higher temps. will hurt your beer. You'll produce higher alcohols and phenolics that will make the beer harsh and give you killer hangovers. ------------>Denny
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20 years ago
There are six on the right. 2 from the CO2 (2 molecules) and 4 from the ethanol (2 * 2 carbons in the molecule).
Of course, I'm a chem e, too, so I leave balancing to the chemists. I've got better things to do....;^)
Chris
David M. Taylor wrote:
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20 years ago
(snip)
Huh huh. Chemistry is cool. I used to think about this stuff myself back in the day when I first started brewing. This ain't nuts. It's real science. Cool stuff, ain't it?
Actually, I believe there is supposed to be an oxygen molecule on the input end of the chemical reaction. And, not to be rude, but your equation above does not balance properly. Take, for instance, the Carbon atoms... if there are 6 on the left, then there better be 6 on the right. But anyway... I believe that based on the amount of oxygen in the fermenting brew, differing amounts of CO2 and alcohol will be produced, i.e., in the beginning stages of fermentation, more CO2 is produced and less alcohol. Then when the brew is more anaerobic, more alcohol and less CO2. Something like that anyway. I've got it all in my old notes somewhere... fun stuff.
-- Dave Bachelor of Chemical Engineering by degree
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20 years ago
Oops. You got me on that one. But you are basically right: Fermentation produces heat.
-- Dave "Just a drink, a little drink, and I'll be feeling GOOooOOooOOooD!" -- Genesis, 1973-ish