Immersion Chiller / Heating Coil

[Brendan]

Wanted to build an immersion coil to be able to quickly cool my all grain mashes, so that I didn't have to rely on passive cooling in ice baths. Got an 18m coil of 1/2" copper tube.

I made it to fit perfectly in my open top keg/mash tun, and found that this 12L glass container was the right size for what I needed, so proceeded to start coiling.

As well as building an immersion coil, I had this crazy idea that a way to be able to cook up my corn for a bourbon wash, was if I was able to recirculate boiling water through the coil while it is submersed in the mash. Then I should be able to raise its temperature and not have to worry about gas burners or internal heating element which can have detrimental results on bourbon mashes.

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Also found I had a couple of small bits of 1/2" coil laying around that were offcuts and I hadn't used for anything else, so I thought i'd buy myself a few extra turns and go all out for a 75 foot (22.86m) coil. Although the 18m would have been enough for an immersion chiller, I really wanted as much coil as possible to use as a heating coil in the mash tun.

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Joined them all together, and attached input and output arms...

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Gave it a good clean up and sanding

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