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Old 10-11-2012, 09:22 PM   #221
HokieBrewer
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Does the bag itself take that long, or the carboy in the bag?
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Old 10-11-2012, 09:42 PM   #222
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Quote:
Originally Posted by HokieBrewer
Does the bag itself take that long, or the carboy in the bag?
Both the air and the carboy. For one of my recent brews with air I cooled the wort to 66F. I put it in the bag and the fermometer read 66F. The next morning (8-10 hours later) the fermometer was reading 70F. The fermometer got back to 66F(or so) the next morning (about 36 hours after initially adding ice).

Once it got down the temp was solid and easy to keep in the mid to low 60's.

PS. I do not measure the air temp but once it is cold it is quite foggy in the cooler.

 
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Old 10-12-2012, 01:52 AM   #223
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I wouldn't mess with the water, you might as well just get a $5 tub from Wally World if you're going to dump water in. Tubs are sturdier and easier to clean. I bought my bag to not have to use water. A four degree climb when first putting the fermenter into the bag isn't a big concern, some of that is the natural temp climb during the start of fermentation, the rest just the equalization of temp before the bottles of ice kick in. If anything, just add extra bottles for the first 12-24 hours to stabilize faster and then back down the bottle count to maintain temps after that.
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Old 10-12-2012, 02:32 AM   #224
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Quote:
Originally Posted by ThatGeekGuy
I wouldn't mess with the water, you might as well just get a $5 tub from Wally World if you're going to dump water in. Tubs are sturdier and easier to clean. I bought my bag to not have to use water. A four degree climb when first putting the fermenter into the bag isn't a big concern, some of that is the natural temp climb during the start of fermentation, the rest just the equalization of temp before the bottles of ice kick in. If anything, just add extra bottles for the first 12-24 hours to stabilize faster and then back down the bottle count to maintain temps after that.
The cool brewer would hold temps longer than a traditional swamp cooler just simply because it is insulated. If you really need to lower temps it is a good option in a bind.
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Old 10-12-2012, 02:53 AM   #225
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I have the $5 tub from Walmart and the cool brewing bag. The cool brewing bag is way better with water. But, I want to go without water. Just trying to find a way.

One person said my 5 degree rise was probably because of the yeast growing. Maybe so. I don't know much about then the heat production is highest.

Bottom line I plan to try the little fan to see if air movement helps. I get the idea from the refrigerator which has a fan.

 
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Old 10-12-2012, 09:43 AM   #226
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Let us know how the fan works. Where/how are you planning to place/mount it?
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Old 10-16-2012, 10:09 AM   #227
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Just put an order in for one of these. Temp control is a sore point for me during summer, though in the coldness of the winter months its generally not much of a problem, but I am sure its going to help.

I am beginning to see how important temp control is for beer making so I a super excited to try this out! Even got a recipe planned for my first go. I will post my experiences and results
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Old 10-16-2012, 02:25 PM   #228
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Mine should arrive today! I'll use it for a Tripel I'll make with a friend on Learn to Homebrew Day, 11/3.

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Old 10-18-2012, 04:52 PM   #229
skullface1818
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Ive been using mine for about a week and so far its working out great.

you really do have to change the ice out 12 hours after cooling and fermentation starts

After the first 24 hours it can atcuallly go down to 55 degrees (in a 78 degree house) quite easily if you put too much ice in it (I usually use between 2-4 liters)

Im really liking this thing so far, its really a necessity if your don't feel like paying for a refrigeration/freezer to keep your brew cold.

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Old 10-19-2012, 11:40 AM   #230
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Can i use this for insulating a 21" x 21" megapot electric boil kettle too?

 
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