Originally Posted by duckredbeard
I'm sure I'm not the first to think of this. I'm posting this in case someone is looking for an easy way to cool a primary now that warmer months are here.
I can't get a ferm chamber, so I've been trying the wet wrap and fan trick. My temps were staying around 72 in a basement that is currently 74. I have two bar towels wrapped around the primary, held in place by two long rubber bands. I had tried adding ice under the towels, but it became a puddle too fast. Light bulb moment!
We have a few of those refreezable ice blocks, the ones that are about 1x3x5. I stuffed 3 of those under the towels, evenly spaced, and rewet the towels. After about one hour, the fermometer is showing 68!
Since I have several of these, I'll just keep rotating them. What would be cool is some kind if belt with pockets to hold them. Hmm...
Sounds like a lot of work to drop ~2 degrees..... as others have suggested, why not just use a swamp cooler
. Less work and better temp control. I have a beer in one now, room temp's ~71, fermenter temp's ~67 and I haven't added ice bottles in over 48 hours. That's ~5 degrees with no effort, and I had that fermenter at ~63 a couple days ago when it was hot hot outside (room temp was ~75) with very little effort and that was during high krausen.