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<p>Nganga,</p>
<p>I wish you well with your goal to launch TLUD distribution in
Zambia. There are others on this list who could give you
excellent comparative analysis and help you to be successful.
Hopefully they will respond. I do not have the background to do
this.<br>
</p>
<p>Barbecue is usually done with charcoal. I don't know how it
would work with TLUDs. There are a lot of droppings from the
food, so it would not be good to barbecue directly above a TLUD,
unless a shield is placed between to catch the droppings. A side
feed, like on the 3 hour stove, could feed into a barbecue cooker
and keep the stove clean. The flavor of the food might not be the
same as with charcoal.<br>
</p>
<p>Kirk H.</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 6/13/2020 4:49 AM, nganga liambai
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1622163851.191611.1592048986491@mail.yahoo.com">
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<div id="ymail_android_signature" style="overflow-wrap:
break-word; font-family: sans-serif;">Hi Ron,</div>
<div id="yMail_cursorElementTracker_1592042535745"
style="overflow-wrap: break-word; font-family: sans-serif;"><br
style="overflow-wrap: break-word;">
</div>
<div id="yMail_cursorElementTracker_1592042537265"
style="overflow-wrap: break-word; font-family: sans-serif;">Thank
you for your response. I am located within Lusaka un- Zambia
and I am asking because I would like to acquire analytical
skills pertinent to the TLUD technology. I am working towards
launching FABStove distribution in Zambia and in this regard
Comparative analysis is essential. I also wish to be able to
figure out improvements to the appliance. For instance, here
in Zambia, barbeque is something every household values. That
is the sort of situations I am looking at as well as just
being conversant and having adequate product knowledge.</div>
<div id="yMail_cursorElementTracker_1592044149813"
style="overflow-wrap: break-word; font-family: sans-serif;"><br
style="overflow-wrap: break-word;">
</div>
<div id="yMail_cursorElementTracker_1592044151217"
style="overflow-wrap: break-word; font-family: sans-serif;">Regards,</div>
<div id="yMail_cursorElementTracker_1592044157598"
style="overflow-wrap: break-word; font-family: sans-serif;">Nganga</div>
<div id="yMail_cursorElementTracker_1592044047876"
style="overflow-wrap: break-word; font-family: sans-serif;"><br
style="overflow-wrap: break-word;">
</div>
<div id="yMail_cursorElementTracker_1592044064335"
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sans-serif; color: rgb(109, 0, 246);">
<div style="overflow-wrap: break-word;">On Fri, Jun 12, 2020
at 17:31, Ronal Larson</div>
<div style="overflow-wrap: break-word;"><a class="moz-txt-link-rfc2396E" href="mailto:rongretlarson@comcast.net"><rongretlarson@comcast.net></a>
wrote:</div>
</div>
<div style="overflow-wrap: break-word; padding: 10px 0px 0px
20px; margin: 10px 0px 0px; border-left: 1px solid rgb(109,
0, 246);">
<div id="yiv7165841024" style="overflow-wrap: break-word;">
<div style="overflow-wrap: break-word;">Nganga and list:
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><br class="yiv7165841024"
style="overflow-wrap: break-word;" clear="none">
</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><span class="yiv7165841024Apple-tab-span" style="overflow-wrap: break-word; white-space: pre;"> </span>Sorry.
There may be something around to help in such
designs - but I believe the extra notes in Kirk’s 9
page description is all that is available. Kirk
benefits from being able to work with Aprovecho (Dean
Still) and I know that has helped. Mostly these ideas
come from Kirk being retired and being motivated to
build better TLUDs. Kirk has identified his thoughts
as hypotheses.</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><br class="yiv7165841024"
style="overflow-wrap: break-word;" clear="none">
</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><span class="yiv7165841024Apple-tab-span" style="overflow-wrap: break-word; white-space: pre;"> </span>I
feel the TLUD topic we are most missing on is the
pressure distribution inside any TLUD</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><br class="yiv7165841024"
style="overflow-wrap: break-word;" clear="none">
</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><span class="yiv7165841024Apple-tab-span" style="overflow-wrap: break-word; white-space: pre;"> </span>There
are a few good doctoral theses out there on TLUDs.
I’ll try to come up with a list.</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><br class="yiv7165841024"
style="overflow-wrap: break-word;" clear="none">
</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><span class="yiv7165841024Apple-tab-span" style="overflow-wrap: break-word; white-space: pre;"> </span>Anyone
have other help for Nganga?</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><br class="yiv7165841024"
style="overflow-wrap: break-word;" clear="none">
</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><span class="yiv7165841024Apple-tab-span" style="overflow-wrap: break-word; white-space: pre;"> </span>Nganga
- where are you located and why do you ask? How else
can we help?</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;"><br class="yiv7165841024"
style="overflow-wrap: break-word;" clear="none">
</div>
<div class="yiv7165841024" style="overflow-wrap:
break-word;">Ron<br class="yiv7165841024"
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<div style="font-family:Roboto, sans-serif; color:#6D00F6;">
<div>On Fri, Jun 12, 2020 at 17:31, Ronal Larson</div>
<div><a class="moz-txt-link-rfc2396E" href="mailto:rongretlarson@comcast.net"><rongretlarson@comcast.net></a> wrote:</div>
</div>
<div style="padding: 10px 0 0 20px; margin: 10px 0 0 0;
border-left: 1px solid #6D00F6;">
<div id="yiv7165841024">
<div>Nganga and list:
<div class="yiv7165841024"><br class="yiv7165841024"
clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>Sorry.
There may be something around to help in such designs
- but I believe the extra notes in Kirk’s 9 page
description is all that is available. Kirk benefits
from being able to work with Aprovecho (Dean Still) and
I know that has helped. Mostly these ideas come from
Kirk being retired and being motivated to build better
TLUDs. Kirk has identified his thoughts as hypotheses.</div>
<div class="yiv7165841024"><br class="yiv7165841024"
clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>I
feel the TLUD topic we are most missing on is the
pressure distribution inside any TLUD</div>
<div class="yiv7165841024"><br class="yiv7165841024"
clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>There
are a few good doctoral theses out there on TLUDs.
I’ll try to come up with a list.</div>
<div class="yiv7165841024"><br class="yiv7165841024"
clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>Anyone
have other help for Nganga?</div>
<div class="yiv7165841024"><br class="yiv7165841024"
clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>Nganga
- where are you located and why do you ask? How else
can we help?</div>
<div class="yiv7165841024"><br class="yiv7165841024"
clear="none">
</div>
<div class="yiv7165841024">Ron<br class="yiv7165841024"
clear="none">
<div class="yiv7165841024"><br class="yiv7165841024"
clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span><br
class="yiv7165841024" clear="none">
<div><br class="yiv7165841024" clear="none">
<blockquote class="yiv7165841024" type="cite">
<div class="yiv7165841024yqt5692895370 yQTDBase"
id="yiv7165841024yqtfd95456">
<div class="yiv7165841024">On Jun 12, 2020, at
4:38 AM, nganga liambai <<a rel="nofollow"
shape="rect" class="yiv7165841024"
ymailto="mailto:nliambai@yahoo.com"
target="_blank"
href="mailto:nliambai@yahoo.com"
moz-do-not-send="true">nliambai@yahoo.com</a>>
wrote:</div>
<br
class="yiv7165841024Apple-interchange-newline"
clear="none">
</div>
<div class="yiv7165841024">
<div class="yiv7165841024yqt5692895370 yQTDBase"
id="yiv7165841024yqtfd03975">
<div class="yiv7165841024"
id="yiv7165841024ymail_android_signature">Good
day Ron,</div>
<div class="yiv7165841024"
id="yiv7165841024yMail_cursorElementTracker_1591956495904"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"
id="yiv7165841024yMail_cursorElementTracker_1591956531333">Your
analysis of Kirk' 3 hour TLUD below is
impressive and motivating. However, I have
found it rather too advanced in some
essential aspects, Is there some specific
literature you can prescribe in this regard
to help.</div>
<div class="yiv7165841024"
id="yiv7165841024yMail_cursorElementTracker_1591957917275"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"
id="yiv7165841024yMail_cursorElementTracker_1591957919275">Nganga.</div>
<div class="yiv7165841024"
id="yiv7165841024yMail_cursorElementTracker_1591956366924"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"
id="yiv7165841024yMail_cursorElementTracker_1591956399108"><br
class="yiv7165841024" clear="none">
</div>
<br class="yiv7165841024" clear="none">
</div>
<blockquote class="yiv7165841024"
style="margin:0 0 20px 0;">
<div class="yiv7165841024yqt5692895370
yQTDBase" id="yiv7165841024yqtfd47744">
<div class="yiv7165841024"
style="font-family:Roboto,
sans-serif;color:#6D00F6;">
<div class="yiv7165841024">On Fri, Jun 12,
2020 at 1:53, Ronal Larson</div>
<div class="yiv7165841024"><<a
rel="nofollow" shape="rect"
class="yiv7165841024"
ymailto="mailto:rongretlarson@comcast.net"
target="_blank"
href="mailto:rongretlarson@comcast.net"
moz-do-not-send="true">rongretlarson@comcast.net</a>>
wrote:</div>
</div>
</div>
<div class="yiv7165841024" style="padding:10px
0 0 20px;margin:10px 0 0 0;border-left:1px
solid #6D00F6;">
<div class="yiv7165841024yqt5692895370
yQTDBase" id="yiv7165841024yqtfd91014">
<div class="yiv7165841024"
id="yiv7165841024">
<div class="yiv7165841024">List:
<div class="yiv7165841024"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>1.
I list myself as a cc, because I’ve
stopped receivinging recent stove
list material - for unknown reason
(even though Andrew assures me I’m
still a list member). Please list
me as a cc if you respond to this.</div>
<div class="yiv7165841024"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>2.
This is about the new stove that
Kirk talked about a few days ago -
and Tom Miles gave this backup from
the stove archive site: <a rel="nofollow" shape="rect" class="yiv7165841024" target="_blank" href="http://stoves.bioenergylists.org/files/harris_3_hour_tlud_06_04_20.pdf" style="orphans:2;white-space:pre-wrap;widows:2;" moz-do-not-send="true">http://stoves.bioenergylists.org/files/harris_3_hour_tlud_06_04_20.pdf</a></div>
<pre class="yiv7165841024" style="white-space:pre-wrap;orphans:2;widows:2;"><<a rel="nofollow" shape="rect" class="yiv7165841024" target="_blank" href="https://click.api.drift.com/click/baa65bd9-95ed-4749-af2e-86ac72890cf2?u=http%3A%2F%2Fstoves.bioenergylists.org%2Ffiles%2Fharris_3_hour_tlud_06_04_20.pdf%3Fd_utk%3D2c66a24b-c042-4db9-905e-b77c486b8996&h=96c42694cdbd72a4e1f2c4732c6fdebd" moz-do-not-send="true">https://click.api.drift.com/click/baa65bd9-95ed-4749-af2e-86ac72890cf2?u=http%3A%2F%2Fstoves.bioenergylists.org%2Ffiles%2Fharris_3_hour_tlud_06_04_20.pdf%3Fd_utk%3D2c66a24b-c042-4db9-905e-b77c486b8996&h=96c42694cdbd72a4e1f2c4732c6fdebd</a>></pre>
<pre class="yiv7165841024" style="white-space:pre-wrap;orphans:2;widows:2;"><font class="yiv7165841024" face="Helvetica"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>You’ll need to look that over to see what I talk about below.</font><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span></pre>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>3.
To help with my present interest
(with Kevin McLean) in stoves using
corn cobs, I’ve now talked for
several hours with Kirk about his
new design. My main purpose in this
note is to have others look closely
at what Kirk has told us. I know if
no other TLUD that comes anywhere
close to handling 3 hours of use -
and with super emphasis on combined
char-making, efficiency and clean
burns. Will be tested as soon as
virus conditions improve.</div>
<div class="yiv7165841024"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>4.
The first new idea I see here is
that the center of pyrolysis gas
combustion moves upward as the power
level increases. Anyone seen that
principle before?</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>Kirk has
a very wide range of possible power
levels - probably a turn down ratio
(TDR) greater than 10 - bigger range
than my home electric range. Of
course not natural draft, but a
natural draft version using his
principles seems likely to get
better than TLUD's usual TDR < 2.</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>The
lowest power level is accommodated
with a set of relatively small holes
just above the maximum fuel level.
There is some preheating of that
secondary air.</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>Average
power levels (an incredible 5-6 kW)
are predominantly handled a few
inches further up for the pyrolysis
gas volume that is too large to be
handled by the “low power" holes.
This by the excess gasses seeing
some restriction - by striking a
central "blunt body”. As these
“average” gases flow outward, they
create (via Venturi principles) a
lower pressure regime that further
encourages mixing. For me, two new
ideas.</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>As
power level is further increased( by
adjusting blower speed and/or
location), these larger gases that
could not be combusted by the first
two means meet the outer most
secondary air gases that are being
forced inward at another diameter
restriction location. Also, for me,
a new idea.</div>
<div class="yiv7165841024"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>5.
Another new idea:<span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>Above
these three meetings of the two gas
streams there are further radii
changes supported by a central
column - that I haven’t seen before.
Again, used to get more clean
combustion and improved efficiency.
(And all planchas need effciency
help.)</div>
<div class="yiv7165841024"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>6.
The way he is handling the
fan/blower seems new. All focused
on primary air control. His
secondary air is all natural draft.</div>
<div class="yiv7165841024"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024"><span class="yiv7165841024Apple-tab-span" style="white-space:pre;"> </span>7.
Kirk has come up with this at
his own expense. To help a group
interested in adding charcoal-
making to plancha type cooking.
There are several theses in here
for someone able to instrument this
for the numerous interesting
pressure and turbulence variations
that Kirk has included.</div>
<div class="yiv7165841024"><br
class="yiv7165841024" clear="none">
</div>
<div class="yiv7165841024">Kirk -
thanks for all this new work (and
please correct what I have gotten
wrong here). (I think Kirk already
holds the world record for
cleanliness - I hear that testers
are sure it can’t be as clean as he
has already proven he can get.)</div>
<div class="yiv7165841024"><br
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</div>
<div class="yiv7165841024">Ron</div>
<div class="yiv7165841024"><br
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</div>
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</div>
</div>
</div>
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