Emmett,
I too would like to know more about heat exchangers in northern climates. (New Hampshire)
I am pondering a closed loop system in a river. I am getting conflicting answers on the practicality of this. Some say "no problem" and others say the very small differential temperatures lead to icing problems.
Any first hand experience, or know a solid source for specific information?
Thanks - but I don't want to hi-jack this thread...
Pete
