ChrisATX:
raschemmel:
He said he doesn't need chilling.Hahah, that was me. By wort chiller I simply meant a wound copper spiral. Warmer thermostated water can be pumped through to keep the tank heated.
A TEC would make an ideal temp device since the H/C function is DC controllable. Multiple devices could be used to provide redundancy ... Working at 33% - 40% capacity, plenty if safety overhead - just stagger power, 3 supplies distributed via blocking diodes provide ample overhead and redundancy.