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Old 09-14-2012, 04:51 AM   #1
Soetmelks_Brew
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Default Immersion Chiller ( 3 intermeshed Ring design)

Maybe someone can give this tri-fangled device a better name. The chiller is designed on a ribcage chiller and I felt it would look better and most probably work better with the extra coil. I used some .2inch I.D piping a friend gave me, a pipe with a larger I.D would obviously work a lot better.
I chilled 8 gallons wort from 214F to 140F in 3 minutes. I thought that was wow. As I understand the drop to 140F is the most important. So in that range it works fantastically.
After that the drop in temp was 50F every 6 minutes. My water temp was quite warm at 72F so I was unable to cool below that, the flow rate also very low at 0.7gallons per minute. I think I am going to connect a dishwashing pump to the chiller and see what higher flowrate will do.
Used 12.5gallons of water, perfect to use for cleaning.
The overall performance was a little dissapointing @ 37F drop in temperature per minute, but worked wonderfully where it matters most.
Did move the chiller around a lot to encourage flow over the coils.

c1.jpg   c2.jpg   c3.jpg  
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Old 09-14-2012, 02:42 PM   #2
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Wow, I like it!

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Old 09-14-2012, 04:11 PM   #3
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I wouldn't be surprised if the second half of coil is doing nothing more than restricting your flow rate. The water is probably pretty close to your wort temp by the time it gets half way through so your dishwasher pump idea could help quite a bit if you can get the cooling water through faster.

Have you checked the discharge water temp in relation to the wort? If they are close you definitely need more flow.

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Old 09-14-2012, 04:27 PM   #4
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Quote:
Originally Posted by pilotdane View Post
Have you checked the discharge water temp in relation to the wort? If they are close you definitely need more flow.
^^ this. If your temp difference is low, you can increase the flow rate and/or use ice to increase the chiller performance. I use a hose connection to get to 100°F and an aquarium pump with ice to get it down to pitching temp. My tap water is over 80°F
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Old 09-14-2012, 06:33 PM   #5
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Yes the wort temp and discharge temp is very close, I think getting more water through the chiller will definitely help.

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Old 09-14-2012, 06:42 PM   #6
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What does something like that cost?

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Old 09-14-2012, 06:43 PM   #7
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I have made up a 2x5gallon drums of salt water (ratio of 1:5) and it's been in a freezer at 5F without freezing. Any ideas how I can use it as a secondry chiller after using the ground water. I hate the salt depost on my equipment. Maybe a permanent immersion chiller in the drums so the salt water need never leave the containers.

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Old 09-14-2012, 06:52 PM   #8
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Cost me $60. Was a battle keeping the fingers from being pinched, but a very satisfying build.

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Old 09-14-2012, 07:01 PM   #9
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What you might be missing is that the 3 rings are actually seperate from each other. I joined the 3 x inlets seperately from the 3 x outlets.
I wanted the water to travel the shortest route possible but also spread the chiller effectively so as to minimise hot spots. I will upload a pic of the connections.

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Old 09-14-2012, 07:10 PM   #10
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