[GBlist] About woodstoves and air...

[Bob Burns <bobburns61@yahoo.com>]

I dramatically increased the heat in a greenhouse
(definitely not "tight") by supplying outside air
directly to the  woodstove (an old "non-tight"
potbelly).  The stove was not designed for this (I
assume this is what is meant by its having a
"knock-out")..I simply buried a piece of plastic pipe
in the dirt floor and brought up an elbow of 8"
stovepipe from the inner end of this up around the air
intake on the bottom front of the stove, keeping the
intake wide open and then stuffing aluminum foil
around the chinks between the elbow and the front of
the stove.  The greenhouse was 10 degrees warmer the
next night...because the stove was being fed cold air
directly from outside and wasn't sucking cold air in
through all the gaps and crevices in the building. 
Now I have the same idea in the stove in my cabin, and
in addition, a small fan-powered heat exchanger in the
stovepipe.
                    Bob Burns (central GA)


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