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Home Brew Forums > Home Brewing Beer > General Beer Discussion > How long does a 3/8" 20' IC take to cool to pitch?

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Old 02-21-2009, 08:45 PM   #1
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Default How long does a 3/8" 20' IC take to cool to pitch?

The reason I ask is because I think I have "built a better mousetrap". I have looked at the standard design IC and I thought that I could do one better. What I ended up with is what I call the Rib-Cage Immersion Chiller. Like in the title of the thread I used 22' of 3/8" copper tubing and of that 22' I have 20' used in the coils.

So, how long should a normal 20-25' 3/8" IC take to bring boiling wort to 70*? Since I don't have a standard one, I have no way to pit my results against control data.

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Old 02-21-2009, 10:06 PM   #2
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Mine will take 6 gals of wort to 70F in about 30 minutes. This in winter when the outdoor tap water is about 50F and with constant agitation.

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Old 02-21-2009, 10:52 PM   #3
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my 20 ft 3/8 IC has taken 4 gallons from boiling to pitch temp in about 15 minutes. I have the coils spaced about 1" apart and soldered to the riser tube on the fittings side, and supported with 12 gauge wire looped and soldered to keep them spaced evenly 180 degrees away from the fittings. It keeps the chiller more rigid and easier to handle. It also makes it a great aerator for when the wort is cooled. pulling it up and down rapidly really aerates the wort.

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Old 02-21-2009, 11:05 PM   #4
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Maybe it's because it's winter here in the mountains, and I have well water, but my 33' IC get 5.25 gallons to 70F in 9 minutes.

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Old 02-21-2009, 11:36 PM   #5
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Mine does it in about 20 minutes, give or take a few.

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Old 02-21-2009, 11:38 PM   #6
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Depends entirely on the temp of the coolant water and whether you keep the IC agitated in the wort. 10-15 minutes with a cooler of ice and water (approx 35°) recirculated with a submersible pond pump.

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Old 02-22-2009, 03:21 PM   #7
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I did a test last night with boiling water, it took a mere 10 minutes and some change to get from 212 to 70 degrees. The real test will be today when I brew and use it for the first time.

I do have a few questions though. I boiled the cooler last night in water with some distilled white vinegar and it came really clean, but there are still some green spots so I was thinking of taking some steel wool to them. But I have read that you can impart the metal taste to the wort if there is no oxidation layer on it. How do you build this up?? Or basically how do I prepare my chiller for its maiden voyage?

Quick responses will be appreciated, I plan to brew in a little over an hour.

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Old 02-23-2009, 03:14 PM   #8
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It took 17 minutes to cool just shy of 6 gallons to pitching temps with 20' of tubing immersed. I was very impressed with this little inexpensive cooler I made. I have a total of $11 in it for fittings and hose, as the copper was donated to me from a friend who works in heating and cooling. Its so much nicer than the 45+ minute ice bath method! I should start building these and selling them.

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Old 02-23-2009, 03:43 PM   #9
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Quote:
Originally Posted by RedIrocZ-28 View Post
It took 17 minutes to cool just shy of 6 gallons to pitching temps with 20' of tubing immersed. I was very impressed with this little inexpensive cooler I made. I have a total of $11 in it for fittings and hose, as the copper was donated to me from a friend who works in heating and cooling. Its so much nicer than the 45+ minute ice bath method! I should start building these and selling them.
You should post a picture of this thing first!
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Old 02-23-2009, 10:37 PM   #10
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The Rib-cage

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