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Chilling experiment

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euge:
Hi guys!

First post. Looks like a comfortable place here.  ;)

On to the experiment:

Chill 12 gallons of wort from boiling to 65F with as few gallons of water possible.

Method Using a recirc through my IC and a old wore out cooler-tun and frozen PET bottles.

Four gallons for the recirc and...

Five 3L
Six 2L
Two 1L
Fourteen 20oz
Five Blue packs

I figure all the above comes to around 85# ice equivalent. I'll refreeze everything except the recirc water.

The upside is that I save water usage- which can be considerable with an IC. Downside? Takes longer. I also had to resort to the blue paks at the very end. More like insurance since it was already below 70F. However, pitching temp for the S-04 ended up being 62F!

Preliminary conclusions: I would feel a little more comfortable with a couple extra 3L. Or I could waste a little water just dropping the wort down to 150F or so then do the recirc. That would shorten the duration as well.

This has real potential IMO

hamiltont:
A different spin. I run most of the IC water into a party tub and use that water for cleaning at the end of the brew day. I save water and the cost of heating it...  I'm on well water so 10 gallons from boiling to 60F takes about 20 min.  I've read about others running their IC water into the washing machine.

ndcube:
If you want to save water and can pitch later in the day or the next morning...

1) Chill to 80F then transfer to the fermenter.
2) Place fermenter in a tub of ice water and let sit (stir occasionally) until it's pitching temp.

euge:

--- Quote ---If you want to save water and can pitch later in the day or the next morning...

1) Chill to 80F then transfer to the fermenter.
2) Place fermenter in a tub of ice water and let sit (stir occasionally) until it's pitching temp.

--- End quote ---

I have done this in the past but really is a step backwards.

My older method was to chill to mid 80's and place in ferm chamber with ice-packs which would bring down to proper temps.

Worked but I prefer more control.

Haha the wort is still at 60F a day and a half later! I expect it to warm up once those yeasties get going!

yugamrap:
Your recirculation technique will work better if you can get the ice out of the bottles and break it up into smaller chunks.  This will provide greater surface area for heat exchange, and reduce the barrier effect of the cold, but no longer frozen, water in the bottles.  I have a bunch of plastic containers with lids from shredded cheese and won ton soup.  Some are 1/2-quart and some are 1-quart, and they can be stacked in the freezer.  On brew day, I put some water in the cooler that I use for recirculation.  Then, I give each ice container a brief dip in the water to help release the ice.  Once the ice is out, I break it into smaller pieces with a hammer, and add it to the cooler.

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