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Home Brew Forums > Home Brewing Beer > DIY Projects > Chillers and Stir Plates > Heat Core for Cooling?
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Old 03-12-2008, 08:14 AM   #1
ClutchDude
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Default Heat Core for Cooling?

I was reading instructables today and saw a piece about making a ghetto AC from a Car Heat Core, pumping the Ice cold water thru it to a fan where it would pull all the air through the manifolds and creating a nice cold air.

I'm not much of a car guy, so I don't know if they are soldered or rather just one long piece of tubing.

If it is all one piece of copper or aluminum, I imagine there would be no lead solder the wort could come in contact with. If so, a new heat core might be neat to mess with since they're only about $27.

Figured I'd ask here in case anyone knew.

http://en.wikipedia.org/wiki/Heater_core
http://www.instructables.com/id/Portable-12V-Air-Conditioner---Cheap-and-easy!/

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Old 03-12-2008, 12:51 PM   #2
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The one i replaced from a 300zx was copper tubing, however i didnt remove the cooling fins to see if it was one piece or multiple pieces soldered.

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Old 03-12-2008, 01:03 PM   #3
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The vast majority of car heatercores are constructed of multiple thin copper tubes soldered to resivoirs at either end. They are pretty easy to identify:


However, a different style of heatercore that is generally not used (less efficient) consists of a single, long copper tube such as this:

I am fairly (like, 99%) certain that the 180* turns at the ends are soldred on though. Doesn't seem like it would be possible to assemble them otherwise.

EDIT: This is also why moonshine has such a bad reputation. They would use radiators assembled in the same fasion as the normal heatercores. Consequently, lots of lead, lots of death.

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Old 03-12-2008, 01:05 PM   #4
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did you think about lead?

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Old 03-12-2008, 06:27 PM   #5
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Thanks for cluing me in. I'll steer clear of using these. I wonder if you could find an RoHS-like compliant part that uses silver-bearing instead.

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Old 03-12-2008, 08:10 PM   #6
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I actually saw somewhere some guy using one of these for his cooling...i can't remember details or where it was though

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Old 03-12-2008, 08:20 PM   #7
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Someone used them as prechillers but not in direct contact with wort. Waste of time IMHO.

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Old 03-17-2008, 10:18 PM   #8
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they'd be useable as a pre-chiller...but i wouldn't use them for anything that touched wort

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Old 03-18-2008, 11:12 PM   #9
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if they diddn't have lead you could use them in a cooler for a draught box... Any way to get them lead free?

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Old 03-19-2008, 12:48 AM   #10
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I think you could use it as a closed system immersion chiller. heater core in ice water pump water through immersion chiller out to core and back.

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