Originally Posted by P-J
Sounds like an excellent plan to me. It is similar to a fermentation chamber that I built a few years ago. I wrapped 4 loops of 1/2" OD copper around the Sanke and then insulated it as you stated. I used heat sink "grease" to provide excellent heat transfer between the coil and the keg. I then used an Auber Instruments PID (SYL-2352) for temp control.
Works very well and I can maintain the temp spot on.
The difference is that I use a commercial 'liquid' refer unit instead of the 'keezer' plan.
Wishing you the best.
P-J, im guessing your commercial unit was one that both chilled and pumped the coolant, right? Do you a have any concerns about a basic fountain/pond pump getting the glycol moving? I was looking at a 200gph unit at Lowes today.
I'm also looking to do a dual stage heating and cooling controller because this thing is going to be sitting in my garage or basement which both have some cold temps in the winter.
The chest freezer we have right now doesn't have a collar on it. I don't really need the extra height, but I can't think of another way to have coolant and power lines running in and out of the freezer without drilling a hole in the side (which I know better than trying).