Controlling Fermentation Temperatures - Poll - Page 3 - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Controlling Fermentation Temperatures - Poll

View Poll Results: What you do use to control your fermentation temperature?
Nothing, I rely on the ambient air or my house's AC 41 18.81%
Swamp cooler or other water bath type setup 57 26.15%
Converted fridge or freezer 88 40.37%
Separate climate controlled room or fermentation chamber 22 10.09%
Other 10 4.59%
Voters: 218. You may not vote on this poll

Reply
 
Thread Tools
Old 08-30-2010, 06:33 PM   #21
kwantam
Recipes 
 
Aug 2010
Austin, TX
Posts: 81
Liked 1 Times on 1 Posts


I made a controller for my chest freezer using a microcontroller, an LM335, and a relay.

I've been thinking that I will make a smaller / lower cost temp controlled water bath using a Peltier cooler in an 18 gallon tub. Rough back-of-the-envelope calculations* imply I can easily keep it down to lager temperatures with a couple 300W Peltier junctions with ambient temps around 80F. If/when I test this out I'll post a thread about it.

*Assume we have 20 kg (about 5.5gal) of a 1.070 beer that ferments out completely in 48 hours (this overestimates the power output), and that it's fermenting at a more or less constant rate (not quite true, but close). This means that there are 1300 g of sugar being processed. 1 g of sugar metabolized completely results in ~17 kJ energy released, so in total 22 MJ will be released during fermentation. If this is spread over 48 hours, we have a constant power output from the fermenting beer of about 130W. In addition, there is some thermal loss to ambient. With reasonable approximations for exposed surface area, with a 20*C differential we'll have to overcome about 300W of heating from the outside world.


 
Reply With Quote
Old 08-30-2010, 06:41 PM   #22
cheezydemon3
Registered User
Recipes 
 
Nov 2009
louisville
Posts: 12,960
Liked 1672 Times on 1251 Posts


OOOOOOOOH!! a poll!!!

I like polls.

The ambient temp in my basement is 65F or so, and the concrete floor is even cooler, or else I would use something more than just AC.

 
Reply With Quote
Old 08-30-2010, 06:45 PM   #23
Phunhog
Recipes 
 
Sep 2008
Posts: 2,060
Liked 177 Times on 134 Posts


I use a tub of water and immerse the carboy in that. I also added a 75W aquarium heater so I can keep the water 65-75 degrees depending on the fermentation. I use this in a unheated, detached garage at the beach in SoCal. It works great!! If we have a hot spell I just throw some frozen water bottles in.

 
Reply With Quote
Old 08-30-2010, 06:49 PM   #24
AnOldUR
fer-men-TAY-shuhn
HBT_LIFETIMESUPPORTER.png
 
AnOldUR's Avatar
Recipes 
 
Mar 2007
, New Jersey
Posts: 6,888
Liked 847 Times on 612 Posts


Flawed poll. Regularly use all the methods mentioned plus others (such as a heat blanket for Saison.)

 
Reply With Quote
Old 08-30-2010, 07:22 PM   #25
WCrane
Recipes 
 
Jun 2010
West Chester, PA, Pennsylvania
Posts: 242
Liked 6 Times on 5 Posts


My basement holds 70 in the Summer, be interesting to see what it gets to in the winter. But I built a SOFC (see my album in my profile) that will get down 58-60F with 1 -1/2g frozen milk jug, swapped out every 12 hrs. The fan, placed is on a timer and runs 2hrs on, 2hrs off.

 
Reply With Quote
Old 09-02-2010, 03:17 PM   #26
JimBell
Recipes 
 
Oct 2007
Louisville, KY
Posts: 165

Does anyone use their keezer and depend upon the yeasts producing enough heat to keep them going?

I keep my keezer around 40, and have been toying with doing this until we can get into the next house.
__________________
**PPLL**

 
Reply With Quote
Old 09-02-2010, 09:31 PM   #27
Xakk
Recipes 
 
Feb 2009
Tulsa, OK
Posts: 124
Liked 5 Times on 2 Posts


I built a fermentation cabinet out of an old dorm fridge and lumber I already had on hand. With the temp probe taped to the side of my carboy, I can maintain temps within a degree of my target and it'll hold down to at least the upper 30's. I cold crash all my beers at 38* before kegging in it.

http://www.homebrewtalk.com/f51/anot...hamber-143443/

 
Reply With Quote
Old 09-02-2010, 09:41 PM   #28
nicadrick
Recipes 
 
Oct 2009
Oregon City, OR
Posts: 250


I use a wet bath towel and a fan. This works reasonably well as long as you can get re-soak the towel before the beer temp rises too far.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Summer Fun with fermentation temperatures DustinHickey Fermentation & Yeast 1 07-20-2010 08:59 PM
Controlling Fermentation During the summer kmoore42 Fermentation & Yeast 13 06-26-2010 01:53 PM
controlling Ferm Temp bouncing up and down Razorbrew Fermentation & Yeast 3 06-04-2010 06:23 PM
Slow Fermentation at Low Temperatures hokenfloken Fermentation & Yeast 2 02-15-2010 08:42 PM
Controlling fermentation temperature when the wife won't let you in the house? badun Fermentation & Yeast 14 12-15-2009 12:00 AM


Forum Jump