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Home Brew Forums > Home Brewing Beer > General Beer Discussion > Cold crashing at 31-33 F versus 45-48 F.
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Old 11-03-2012, 05:31 PM   #1
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Default Cold crashing at 31-33 F versus 45-48 F.

I want to bottle 30 gallons of beer tomorrow and would like to cold crash prior to bottling. My attached garage has an ambient temp around 45-48 F and the projected low outdoor temperature overnight will be 31-33 F. Should I leave this in the garage overnight or set it outdoors overnight? I am just not sure about having the beer so close to freezing temps overnight.


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Old 11-03-2012, 06:58 PM   #2
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Quote:
Originally Posted by msa8967
I want to bottle 30 gallons of beer tomorrow and would like to cold crash prior to bottling. My attached garage has an ambient temp around 45-48 F and the projected low outdoor temperature overnight will be 31-33 F. Should I leave this in the garage overnight or set it outdoors overnight? I am just not sure about having the beer so close to freezing temps overnight.
Yeah i have the same question.


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Old 11-03-2012, 07:18 PM   #3
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You should be fine outside unless your ABV < 3%

http://www.homebrewtalk.com/f128/tab...utions-192138/
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Old 11-03-2012, 07:57 PM   #4
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The beers are all 4.5% ABV or higher.
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Old 11-03-2012, 08:01 PM   #5
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Should be fine. Hard freezing the beer might prove deadly to the yeast though. This may or may not be a concern depending on how you plan to carbonate.
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Old 11-03-2012, 08:09 PM   #6
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Quote:
Originally Posted by aiptasia View Post
Should be fine. Hard freezing the beer might prove deadly to the yeast though. This may or may not be a concern depending on how you plan to carbonate.
Since I am bottling with corn sugar I think your comment about the yeast is key so I will just leave it in the 45 F range. I also plan to wash the yeast to reuse so I don't want any damage to occur.
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Old 11-03-2012, 08:13 PM   #7
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With that volume of beer even if the temperature dips below freezing the core will likely not be frozen.

I actually did a blog post on this today with a 10 gallon model.
http://woodlandbrew.blogspot.com/201...g-outside.html
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Old 11-03-2012, 08:14 PM   #8
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you should be safe outside, here is a table from another thread thanks Ray.

There was a question in another thread about freezing points
of beer, so I thought I'd post this info for reference. I wrote
a program to spit out the numbers.

%Alc Temp (F)
by
vol

3.0 30.2
3.1 30.2
3.2 30.1
3.3 30.0
3.4 30.0
3.5 29.9
3.6 29.8
3.7 29.8
3.8 29.7
3.9 29.7
4.0 29.6
4.1 29.5
4.2 29.5
4.3 29.4
4.4 29.3
4.5 29.3
4.6 29.2
4.7 29.2
4.8 29.1
4.9 29.0
5.0 29.0
5.1 28.9
5.2 28.8
5.3 28.8
5.4 28.7
5.5 28.7
5.6 28.6
5.7 28.5
5.8 28.5
5.9 28.4
6.0 28.3
6.1 28.3
6.2 28.2
6.3 28.1
6.4 28.1
6.5 28.0
6.6 27.9
6.7 27.9
6.8 27.8
6.9 27.8
7.0 27.7
7.1 27.6
7.2 27.6
7.3 27.5
7.4 27.4
7.5 27.4
7.6 27.3
7.7 27.2
7.8 27.2
7.9 27.1
8.0 27.0
8.1 27.0
8.2 26.9
8.3 26.8
8.4 26.8
8.5 26.7
8.6 26.6
8.7 26.6
8.8 26.5
8.9 26.4
9.0 26.4
9.1 26.3
9.2 26.2
9.3 26.2
9.4 26.1
9.5 26.0
9.6 26.0
9.7 25.9
9.8 25.8
9.9 25.7
10.0 25.7
10.1 25.6
10.2 25.5
10.3 25.5
10.4 25.4
10.5 25.3
10.6 25.3
10.7 25.2
10.8 25.1
10.9 25.1
11.0 25.0
11.1 24.9
11.2 24.8
11.3 24.8
11.4 24.7
11.5 24.6
11.6 24.6
11.7 24.5
11.8 24.4
11.9 24.4
12.0 24.3
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Old 11-03-2012, 08:39 PM   #9
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I am cold crashing outside now, and lagering as well...I love fall for this reason.....You should be just fine.....
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Old 11-03-2012, 09:38 PM   #10
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Quote:
Originally Posted by bad67z View Post
you should be safe outside, here is a table from another thread thanks Ray.

There was a question in another thread about freezing points
of beer, so I thought I'd post this info for reference. I wrote
a program to spit out the numbers.

%Alc Temp (F)
by
vol
Thanks for this table. Was it difficult to come up with the equation relating the abv to the freezing point?


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