New Giveaway - Wort Monster Conical Fermeneter!

Home Brew Forums > Home Brewing Beer > Brew Science > Fermintation temps.




Reply
 
LinkBack Thread Tools Display Modes
Old 05-08-2012, 12:04 AM   #1
flexfit115
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Posts: 42
Default Fermintation temps.

It seems to me that every time I brew the thermometers on my bucket seem to say that my brew is 4 or so degrees higher than ambient temp in my house. Does fermentation cause temp to rise in the bucket or are the thermometers wrong? Or maybe I'm crazy?



__________________
flexfit115 is offline
 
Reply With Quote Quick reply to this message
Old 05-08-2012, 12:09 AM   #2
JLem
naturally selected
Feedback Score: 0 reviews
 
JLem's Avatar
Recipes 
 
Join Date: Jan 2009
Location: Attleboro, MA
Posts: 3,637
Liked 168 Times on 148 Posts
Likes Given: 4

Default

You're not crazy and the thermometers are not wrong (at least not relatively so). Fermentation is an exothermic process so you can expect your beer will be 5-10 degrees F higher than ambient.



JLem is offline
 
Reply With Quote Quick reply to this message
Old 05-08-2012, 12:15 AM   #3
flexfit115
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Posts: 42
Default

So do I try to cool it back to the proper temp per my yeast instructions, or is the calculated in the the yeast instructions?

__________________
flexfit115 is offline
 
Reply With Quote Quick reply to this message
Old 05-08-2012, 12:18 AM   #4
marcopolo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2008
Location: Berthoud, Colorado
Posts: 44
Default

Relax. Don't worry. Have a homebrew...

__________________
marcopolo is offline
 
Reply With Quote Quick reply to this message
Old 05-08-2012, 01:05 AM   #5
JLem
naturally selected
Feedback Score: 0 reviews
 
JLem's Avatar
Recipes 
 
Join Date: Jan 2009
Location: Attleboro, MA
Posts: 3,637
Liked 168 Times on 148 Posts
Likes Given: 4

Default

Quote:
Originally Posted by flexfit115 View Post
So do I try to cool it back to the proper temp per my yeast instructions, or is the calculated in the the yeast instructions?
Most of the time it is the fermentation temperature that is listed, so you should cool it down. For example, if I want a fermentation temp of 68°F, my ambient needs to be 60-62°F.

What are you making, what yeast are you using, and what is your ambient temp?
JLem is offline
 
Reply With Quote Quick reply to this message
Old 05-08-2012, 01:20 AM   #6
flexfit115
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Posts: 42
Default

That's what I thought, but brewing a Belgian Dubble, and wlp550 which is good up to 78 degrees according to their website. But I'm at about 77 degrees and ambient is 73 in my house. Thanks.

__________________
flexfit115 is offline
 
Reply With Quote Quick reply to this message
Old 05-09-2012, 02:45 AM   #7
flexfit115
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Posts: 42
Default

It dropped right down to ambient temp after about 24 hrs. Thanks all!



__________________
flexfit115 is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools
Display Modes