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<DIV><FONT size=2 face=Arial>Paul and Crispin,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>The stove being discussed here is Roberto
Poehlmanns design. I am sorry if that was not clear.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Kirk</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=psanders@ilstu.edu href="mailto:psanders@ilstu.edu">Paul Anderson</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org">Discussion of biomass cooking
stoves</A> ; <A title=kevin@elfuegodelsol.com
href="mailto:kevin@elfuegodelsol.com">Kevin Adair</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, October 07, 2015 8:43
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Stoves] TLUD pellets stove
with a venturi burner.</DIV>
<DIV><BR></DIV>Kirk,<BR><BR>Nice work!!!! Kevin Adair is doing
some venturi additions also. <BR><BR>Paul<BR><PRE class=moz-signature cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <A class=moz-txt-link-abbreviated href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</A>
Skype: paultlud Phone: +1-309-452-7072
Website: <A class=moz-txt-link-abbreviated href="http://www.drtlud.com">www.drtlud.com</A></PRE>
<DIV class=moz-cite-prefix>On 10/7/2015 5:09 PM, kgharris wrote:<BR></DIV>
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<DIV><FONT size=2 face=Arial>Roberto,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Nice. I would like to see test results
for particulates. It should be very clean. It looks like it
is loosely based on Crispins flame tube design with holes added in the tube
where the Venturi low pressure area is. The holes are at the bottom of
the burner, so there is better draft and a good burning area
above. If I understand correctly Crispin is using the tube
differently, to concentrate the heat and increase the dwell time for the
flame in that hot environment. His secondary air is all added before
the flame tube. Your design looks more compact and perhaps would be a
better choice for a TLUD. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>There is a limit to how much gas the burner can
handle. When the foil is removed and more primary air is added the
burner is overloaded with gas and a tall diffusion flame forms. I have
been trying to handle this problem by adding more mixing capability,
and have had some improvment, but further work is needed. The
problem with the mixing tubes I am using is that along the edges of the
combustor, the air exiting the tubes exits at an angle instead of straight
out. This holds the gasses below the burner along the edges, and
adds to blowing them to the center, overloading the center of the mixer
and wasting air at the edges of the combustor. This would not be a
problem with your design. You might be able to use two or three
of theses mixers side by side to gain a clean higher fire power.
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>The concentrator ring is intended to mix
the wood gas and air, and the Venturi mixer is intended to mix the wood gas
and the air, so you have a duplicate mixing system. I am not saying
good or bad, just something I notice. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>I see Julian has expressed some doubts about
the Venturi concept. Good for him. I would be very happy if
someone with adiquate equipment and technical ability proved or disproved
the TLUD Venturi concept, either way. I perhaps will have to bite the
bullet and buy a manometer with the ability to measure down to .001 inch of
water column. My rather primative home made manometer did show a
slight pressure drop at the mixer, but not enough to get any
measurments. Our local college science department didn't
seem to be interested.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Attached are some photos of the primary control
valve I am currently using very successfully. It looks like something
similar might work for you.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Good work Roberto, </FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Kirk</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=roberto.poehlmann@gmail.com
href="mailto:roberto.poehlmann@gmail.com" moz-do-not-send="true">Roberto
Poehlmann</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org" moz-do-not-send="true"><A
class=moz-txt-link-abbreviated
href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</A></A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, October 06, 2015 5:53
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Stoves] TLUD pellets stove
with a venturi burner.</DIV>
<DIV><BR></DIV>
<DIV dir=ltr>
<DIV>Hi,</DIV>
<DIV><BR></DIV>
<DIV>This is a video of one of my prototypes of a TLUD pellet stove.</DIV>
<DIV><BR></DIV>
<DIV>The difference with a "normal" TLUD burner, is that it has a 3 inch
tube with secondary air holes after the concentrator ring.<BR></DIV>
<DIV>On top of the the tube, i put a cone to expand the path of the gases,
to shorten the flame, and to have a little internal chimney for
draft.</DIV>
<DIV><BR></DIV>
<DIV>One advantage of this burner, is that you can also burn all of the
charcoal made at the pyrolysis stage, with a nice secondary blue flame (if
you wish) .</DIV>
<DIV><BR></DIV>
<DIV><A href="https://youtu.be/uXMeGcZEYX0"
moz-do-not-send="true">https://youtu.be/uXMeGcZEYX0</A><BR></DIV><BR
clear=all>
<DIV>
<DIV class=gmail_signature>Greetings<BR>Roberto Poehlmann</DIV></DIV>
<DIV class=gmail_signature>Valdivia, Chile.</DIV></DIV>
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