yes, I wrapped my stout conical in double bubble foil faced insulation and it makes a huge difference...I have 11gallons or Vienna lager fermenting at 51 degrees right now with the conical sitting in a 76 degree room. the chiller does not run much. the yeast activity keeps everything churning.
I have yet to insulate my AHB conical because I'm still experimenting with cooling options like a stainless coil or a discharge hose wrapped around it.. I dont want to spend $100 for 2 of the jackets for one conical and the larger carboy jacket that fits my taller/slimmer stout setup wont fit this conical.
Thanks augie. Yes, I've seen your links to other products you're using, but having trouble picturing exactly what you're doing with them. Any chance you could post some photos, or direct me to other threads that discuss how to do this? So are you saying that in addition to the cooling jacket wrapped around the conical, that you also have insulation wrapped around that? Is it wrapped around the lower cone as well? Sorry if these are ignorant questions. I brew in a carboy and a swamp cooler right now, but would really like to get a handle on ferm temps to make better beer and to be able to brew in warm weather and maybe even take on a lager some day! I've considered spending up to $400 on a used commercial refrigerator, but even then it would still require additional $$ for modifications. $100 bucks for a couple of cooling jackets sounds pretty reasonable in comparison!