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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Crispin and Andrew,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Crispin, you told, that the good-isolated gers need a
4kw stove. It would work with small commercial stoves, but as you say, this is
difficult for low-cost stoves, or for well working coal-stoves.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>What about a sunken- or partly-sunken stove? That
would make a similar effect as a masonry-stove you mentioned (e.g. the Kachelofen
in <st1:place w:st="on"><st1:State w:st="on">Bavaria</st1:State></st1:place>
often used is like that) with big mass-ducts. But these stoves need a lot of
space. which is not in a ger.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>In such sunken stoves, earth would staple big quickly
delivered heat and then release it slowly. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>I find your and Andrew’s discussion about
flame-length and higher burn-temperature of sooth-particles very interesting!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>It hits the often found problem of soothing, which I felt
is somehow too much cool air.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Andrew, the condensing water is a long-time and too
few respected aspect. Yes, the non-isolated windows, were a good
water-condenser, without growing funghi. In combination with a big surface/mass
–stove it was not so bad as mostly said. The need of holding all the
circulating heating-water above freeze-point in all walls of all rooms of a modern
house is not energy-saving. When all the thermal-isolation is calculated in
fuel units, there is a lot of fuel that could warm one or two rooms for years
with a simple stove. And the electricity used for air-changing,/ de-hydratation
is another point to calculate with.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>-------------<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>It turns round in my head for a long time, where to
isolate a burning-chamber in order to save heat for good burning and where to gain
heat in the curse of the combustion (and in what possible amount! !)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>to pre-warm secondary air.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>There is another interesting aspect of stove
downsizing: The cooling effect of too big sized fuel in comparison with the
heat power of the stove.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Thereby I thought about isolating the burning-chamber
as well as about a good pre-warming of the fuel before ignition. –The problem
of wet fuel must be solved in advance, or even by pre-warming.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>I think I must do some simple tests of pre-warming
fuel to get an impression about the effect. I think to pre-heat wood about
nearly to 100°C. By small wood could that make a good effect for easy ignition.
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Regards<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Martin<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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