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Posted by hebintn on December 10, 2007, 11:20 am
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This may not be the right group for this question, but here goes. I
have a 21wide x36long x20high greenhouse that is killing me on propane
heating costs and it's not even winter yet here in Tennessee. I have
20 acres of wood with lots of dead wood. Even buying wood would cost
a small fraction of the propane we're going through. I've been
thinking of building a cinder block or firebrick "stove" to use on
cold nights to supplement the propane. I've looked on the net but
haven't found what I'm looking for. Before launching into the design
and building I hope to get some input from folks that know about such
things.
I thought about basically a stone box with a iron cover and stove pipe
chimney with damper. A door on the front with a way of limiting air,
or a vent from outside to furnish oxygen for combustion. The floor of
the greenhouse is dirt so the stove could be build directly on the
ground or a layer of firebrick. The plan would be to load it up with
wood at bedtime and close the damper to slow down combustion. The
brick would heat up and radiate warmth to the greenhouse until solar
would take over at sunup. Any comments or sources of info would be
appreciated.
Any other groups that I could post this to?
Thanks,
Harry
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