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<DIV><FONT size=2 face=Arial>Dr. Boll and Crispin,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Thank you for your well considered responses.
I especially like the idea of balancing the reactor fuel chamber volumn with the
combustor size. I will keep this in mind as I progress, and seek that
balance. </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>I don't quite understand Crispins flame
tube. The stove appears to be loaded with charcoal, so there
should not be any smoke. If the clay is insulating clay than the tube
would provide a hot environment for the CO to burn, if there is a source of
secondary air. If the stove burns wood, by what principles
does the tube work? Is air injected inside the tube? This
would make use of the Venturi effect like Roberto's stove. The flame
gasses accellerating into the tube would drop in pressure and the pressure
difference would help the atmosphere push secondary air into the flame to
equalize the pressure, providing good mixing. This seems to me like it
might work well if that is how it works. Is there something else that I
don't see?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Kirk </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=boll.bn@t-online.de href="mailto:boll.bn@t-online.de">Boll, Martin
Dr.</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, September 16, 2015 6:35
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Stoves] Strata combustor
general principles</DIV>
<DIV><BR></DIV>Kirk,
<DIV><FONT size=2 face=Arial></FONT><BR></DIV>
<DIV>first of all, your stoves and thoughts about TLUD's are very interesting.
And in my opinion</DIV>
<DIV><BR></DIV>
<DIV> the venturi-concept, you are talking about, -how ever managed- will
be generally the next important step for better burning; - and for less
blacked pots!!! </DIV>
<DIV><FONT size=2 face=Arial></FONT><BR></DIV>
<DIV>A presumption I made a year or two ago: </DIV>
<DIV>The (nominal-) power rate of a good working stove has a more or less
narrow relation to the grate-surface, and/or the burning-chamber-volume.</DIV>
<DIV><BR></DIV>
<DIV> I calculated the given numbers of some different commercial stoves.
My calculations confirmed my guess.</DIV>
<DIV>I dont remember the numbers, but it is easy to calculate the numbers out
of available commercial data.</DIV>
<DIV><BR></DIV>
<DIV>Additional I remind to Crispin's postings, some time ago:</DIV>
<DIV>He reported, that he made the burning-chamber of some coal stoves in
Ulanbaator smaller, by just filling some space of the burning-chamber-space
with bricks. And some surface of the grate. In combination with special
incending-procedure, that gave better burning; even by transforming the may of
stoves there, there was an enormous reduction (more than 90%) of
air-pollution. </DIV>
<DIV>So I suspect, if you would use the right-balanced amount of
burning-chamber-volume, you could get a step forward. The volume within
the venturi-riser-burner-tube should be included in the calculation; but in
the tube there will be, -hopefully- a burning some similar to a LPG or NG
flame, which will afford less volume. </DIV>
<DIV>You could take the power-rate which you achieve with low emission, for
extrapolating the stove dimensions for your desired 5 kW output.</DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV>Regards</DIV>
<DIV><BR></DIV>
<DIV>Martin</DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV>Refers to:<BR>
<DIV>
<DIV><BR></DIV>
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Re: [Stoves] Strata combustor general principles</SPAN><BR
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