Originally Posted by philrose
So are you going to recirc ice water or glycol through that or something? interesting. Never heard of an IC serving that purpose.
mind If I ask what kind of fermenter you're talking about and why not use a jacket on the outside walls?
I have a cheap homemade system using a tub of H2O that I control with an aquarium heater and currently DO use it to heat a jacket around my Mini-Brew conical fermenter. (Jacket is here http://www.homebrewtalk.com/f51/homemade-water-jacket-minibrew-6-5-conical-156874/
) But I think I can get better control with an internal coil that I can pump the same controlled H2O through. To compare, when I chill my wort with simple copper wort chiller it will chill much faster than if I simply set it in a jacket(sink) of ice water. So I would like to try the same concept with fermentation. I believe it is easier to conduct hot/cold through metal then plastic, and this conical is very thick.