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Old 08-23-2012, 03:07 PM   #1
HopSong
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Default Fermentation Chamber Fluctuations

I started out using a large bucket and frozen bottles of water to do adjustments. That seemed to work quite well. But, someone had a nice small freezer for sale and I bought it. I had a separate controller to allow it to work at fermenting temps.

Well, I'm not quite such a happy camper. The freezer works well to get temp down.. but there are some pretty big swings in it. I don't think the insulation is worth a cr@p.. or.. maybe I'm just expecting too much???? It seems to have a LOT to do with ambient temps. I have my freezer on the back porch.. out of direct sunlight.. Ambient here.. at this time of year can vary a LOT from early morning low 50's to the hot part of the day, high 70's to low 100's

I currently have the freezer set at 68*. When I wake up in the morning, ambient is in the low to mid 50's. Right now, the freezer is reading 62* and during the day it will get up to about 70*. I decided to turn the freezer off and see what happens. Well, inside the freezer it got down to 62* in the morning and went up yesterday afternoon to 74* I'm thinking the insulation sucks. It's an older freezer. I don't know if the newer ones are better insulated or not. I'm sure if I had more than one carboy in it.. the temp would stabilize a bit more... but, right now.. it's a 5 G batch cooking.

It almost seems that I may have to get a dual controller of some sort to connect to a heat belt or ???.. but not sure what I'm going to do yet..

Suggestions????

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Old 08-23-2012, 06:47 PM   #2
mariojr
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Where is your probe? If it's not in the carboy or jug of water then I think you're going to get these large temp swings.

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Old 08-23-2012, 06:58 PM   #3
HopSong
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Thanks Mario.. I forgot to mention that the probe is in a large glass of water... so, I'd think that should be a reasonable buffer. I should really tape a probe to the side of the carboy as well.. but, haven't so far.

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