I would like to canvass your’s and the rest of the community’s opinion on a potential modification to my setup.
I currently have a two vessel system, 20 gal Blichmann kettles, one is the mash tun the other doubles as a BK and HLT. I have a 7.5m stainless steel herms coil mounted to a lid.
During the mash the wort is recirculated through the coil which sits in the HLT/BK, the water heated by the element which is controlled by a PID and temperature probe on the coil outlet.
The sparge is done by pumping the entire volume of water on top of the mash bed and then back into the HLT/BK for the boil. Obviously the lid with the coil is removed from the BK for the boil.
Cooling is done with a plate chiller.
This setup I find works well, returning 75-80%.
I would however like to simplify the system a little more and use a fixed HERMS/Immersion chiller in the BK and ditch the plate chiller.
My questions (finally) do you think your new High Flow HERMS Coil would be efficient enough to use as a chiller? Do you think the bulk in the kettle would negatively impact the boil?