[Cob] Re: My two cents about cob/earth oven also heating wateretc...

[Amanda Peck]

Thank you.  Actually I hadn't thought about the concept of pulling heat out 
of a stove.

.................
Ocean wrote (snipped):

We really don't want a water/heat exchanger to reside within the primary 
combustion chamber of a wood stove (metal), masonry stove, cob oven, etc for 
the following reason:  any heat "pulled" out of the stove will result in a 
cooler burn, with more creosote exiting the stove and being deposited into 
the chimney.

Since unburned creosote is potential fuel, this results in the best case - 
loss of potential heat energy; in the worst case - more likelihood of a 
chimney fire!