Originally Posted by JeepDiver
As mentioned above, what you saw was probably a herms, and not a chiller. It might work for a chiller, but a chiller is going to work much better if you move it around while chilling. Though I guess if you had a pump so you could whirlpool the kettle it might work good in that case.
Thats exactly what I do. I whilpool my wort during chilling.
I originally built the coil for a HERMS, but most of the time I mash in an igloo cooler and it holds temps just fine, so I get the most use out of mine as a chiller.
I whirlpool just because I have a pump and Im gonna pump into fermenters anyway, so why not whirlpool and get rid of some trub.
If I didnt have a pump, Id just swirl the wort with my mash paddle. I did this when I used an immersion chiller. I liked to keep the immersion chiller in one place.
If your thinking of putting a coil in your keggle, I'd encourage it. You can use it for a wort chiller now, and have a HERMS coil if you want to expand your system in the future.