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Old 04-28-2009, 12:58 AM   #1
BillTheSlink
 
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OK,

I will be bottling in a few days and want to know about adjusting carbonation. I brewed a hefe as my first and according to the style guide it's supposed to be pretty carby (and I like them that way). My question is how to use Palmer's chart, posted here:




Let's say I bottle at 70 degrees and I drawl my line to to 3.25 CO2, do I continue the angle to 6oz of corn sugar, or drawl a straight line from 3.25 to 5oz?
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Old 04-28-2009, 01:02 AM   #3
snailsongs
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how does the temperature even affect the amount of sugar you need? It seems like the yeast will consume the sugar as well at 50F as it will at 70F, even if it takes a bit longer. can someone explain briefly?

 
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Old 04-28-2009, 01:03 AM   #4
Yooper
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By the way, I wouldn't prime to more than about 2.9 volumes, max. It'll be super carbed at 2.9, champagne like (not to mention risking bottle bombs) if higher than 3.0, in my opinion.
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Old 04-28-2009, 01:05 AM   #5
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Quote:
Originally Posted by snailsongs View Post
how does the temperature even affect the amount of sugar you need? It seems like the yeast will consume the sugar as well at 50F as it will at 70F, even if it takes a bit longer. can someone explain briefly?
Well, if the beer has fermented at 50 degrees, and been kept at 50 degrees, it's already got quite a bit of dissolved co2 in it. I especially notice it when I pull lagers out of the cold (34 degree) area, or even with wines under airlock. They'll be quite gassy at a colder temperature, since co2 is more readily dissolved in suspension in a cold substance. Warm the beer up, and it'll bubble like mad- as the co2 comes out of suspension in the warmer temperature.

So, if the beer is at a colder temperature, it's assumed to already have some dissolved co2 in it.
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Old 04-28-2009, 01:09 AM   #6
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Quote:
Originally Posted by YooperBrew View Post
Well, if the beer has fermented at 50 degrees, and been kept at 50 degrees, it's already got quite a bit of dissolved co2 in it. I especially notice it when I pull lagers out of the cold (34 degree) area, or even with wines under airlock. They'll be quite gassy at a colder temperature, since co2 is more readily dissolved in suspension in a cold substance. Warm the beer up, and it'll bubble like mad- as the co2 comes out of suspension in the warmer temperature.

So, if the beer is at a colder temperature, it's assumed to already have some dissolved co2 in it.
thanks, yooper! that makes perfect sense.

 
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Old 04-28-2009, 01:42 AM   #7
BillTheSlink
 
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Quote:
Originally Posted by YooperBrew View Post
Well, if the beer has fermented at 50 degrees, and been kept at 50 degrees, it's already got quite a bit of dissolved co2 in it. I especially notice it when I pull lagers out of the cold (34 degree) area, or even with wines under airlock. They'll be quite gassy at a colder temperature, since co2 is more readily dissolved in suspension in a cold substance. Warm the beer up, and it'll bubble like mad- as the co2 comes out of suspension in the warmer temperature.

So, if the beer is at a colder temperature, it's assumed to already have some dissolved co2 in it.
I am sorry I misunderstand something.

Is the temp what your going to store it at, what it was fermented at (went up and down like a yo-yo), or the temp at bottling (which is what I was thinking).
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Old 04-28-2009, 01:58 AM   #8
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Quote:
Originally Posted by BillTheSlink View Post
I am sorry I misunderstand something.

Is the temp what your going to store it at, what it was fermented at (went up and down like a yo-yo), or the temp at bottling (which is what I was thinking).
It's the temp at bottling. sorry to be so confusing. I think it's worth mentioning that if you fermented at 70 degrees the entire time, and only "cold crashed" it to bottle, I think that the co2 level would be quite a bit different than a beer that never went above 50 degrees. That's why I mentioned lagers. Those beers seem practically carbonated when you check them in secondary! Warming the beer seems to "knock" the co2 out of suspension, so if it's at 70 degrees or so, just use the nomograph as indicated.

Sometimes I just plain talk too much! Shutting up now.
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Old 04-28-2009, 02:01 AM   #9
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Quote:
Originally Posted by YooperBrew View Post
Sometimes I just plain talk too much! Shutting up now.
some of us like your input.....carry on
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Old 04-28-2009, 11:56 AM   #10
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FWIW... When I have bottled, I have used the highest temp the beer has been at. For example, fermented at 65, then let warm to 70 (room temp) then crash cooled to 35. I used 70 degrees for priming calculating. My reasoning is this. After fermentation is complete, as the beer warms up some co2 is going to escape, but when it is cooled long after fermentation there is no more co2 being put into the solution. Is this reasonable? So far it seems to have worked fine.

 
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