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<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>Hi all</span></font><font color=green><span
style='color:green'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>A collegue of mine is looking at
building his own Masonry Heater Stove on a farm near a place called
Knysna, where one has long periods of winter chill and an abundance
of firewood.</span></font><font color=green><span style='color:green'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 color=green face="Times New Roman"><span
style='font-size:12.0pt;color:green'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>Masonry Stoves need a bit of planning and
careful design with all their channels in which absorb the heat
and then slowly release it over a long time. Using high thermal mass materials
as centrally located as possible would I assume be key, but the intricacies of
the flues and physics of calculating the relative sizes of everything remains a
mystery.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>They are very common in Europe and less
common in <st1:place w:st="on">North America</st1:place>. Although you have the
North American Masonry Heater Association. It appears that recently people have
been experimenting with building a large portion out of cob. See this example
of a cob masonry heater: </span></font><font color=green><span
style='color:green'><a
href="http://www.firespeaking.com/portfolio/cob-masonry-heater-at-cob-cottage-company/"
title="blocked::http://www.firespeaking.com/portfolio/cob-masonry-heater-at-cob-cottage-company/"><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>http://www.firespeaking.com/portfolio/cob-masonry-heater-at-cob-cottage-company/</span></font></a><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 color=green face="Times New Roman"><span
style='font-size:12.0pt;color:green'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>Some also integrate a copper coil for
heating water into the fire chamber, which would be most practical.</span></font><font
color=green><span style='color:green'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 color=green face="Times New Roman"><span
style='font-size:12.0pt;color:green'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>There is only one company in <st1:country-region
w:st="on"><st1:place w:st="on">South Africa</st1:place></st1:country-region>
which builds these kinds of stoves. They are in Somerset West.</span></font><font
color=green><span style='color:green'><a
href="http://www.biofire-fireplaces.co.za/"
title="blocked::http://www.biofire-fireplaces.co.za/"><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>http://www.biofire-fireplaces.co.za/</span></font></a></span></font><font
size=2 color=green face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:green'>. The owner is a german master stove builder who
charges European prices. R80 000 (approx $8 500) for an average stove. He
will only build them with conventional masonry. One would hope to be able
to self build for a fraction of this cost I imagine, but obviously one needs to
do it right.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>So I was wondering if anybody on the
StrawBale network might have had some experience with this (using cob or other
natural building methods), and might even possibly have the formulas and example
plans.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>thanks<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=green face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:green'>Andy Horn<o:p></o:p></span></font></p>
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<p class=MsoAutoSig><font size=2 color=green face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:green'><img border=0 width=576
height=117 id="_x0000_i1025" src="cid:image001.jpg@01CD7ED9.67AF30F0"
u1:shapes="_x0000_i1025"></span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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