daftlad banging on about masonary stoves again.
a quote from the Missouri Department of natural resources
Size of Unit:
The masonry stove, as described in this publication, with a firebox exterior of 27 x 36 inches, is
large enough to adequately heat a 1200 to 1500 square foot residence, when insulated to R30
ceilings, R20 walls and R13 floors. This also assumes good weatherstripping, joint caulking and
double glazed windows. Heat distribution by directional fans or duct work will be required to
adequately disperse the heat that this stove is capable of producing. Twenty pounds of air dry
wood burned in a masonry stove will deliver approximately a net value of 112,000 BTU.
With the use of special sized firebrick or castable clay a vertical flue run masonry stove could be
constructed with an outside ornamental wall dimension of 25" x 25' x 6 feet high. Allowing for
safety spacing with a heat shield the masonry stove would occupy a space of approximately 39 x
39 inches. This is very similar to the space required for a large radiant heat style stove. The
weight of the unit would also be greatly reduced. The cost factor is uncertain as fewer but more
costly materials are required, also molds are required to form the castable clay.
this is a link to the full text
http://www.dnr.mo.gov/pubs/pub781.pdfI dont think they have to be massive
has anyone actually built one of these because they look brill and i would like to know more
laters