I built a very inexpensive H.E.R.M.S. system (compared to $1000's of dollars).
For anyone interested in building their own, maybe this will provide some ideas.
H.E.R.M.S. - Description of my Heat Exchange
Recirculating Mash System
System Flow - Explanation of how the system circulates
The HLT/HE - Pictures of the hot liquor tank/heat
exchanger
