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<p>Ron,</p>
<p>Thank you for responding. <br>
</p>
<p>-The power level I did this test at was the highest power level
the stove can reach without smoking. It is forced air primary,
and the stove in the video is natural draft. My natural draft
power level would probably be similar to his, but without smoke or
soot. I am using pellets, which could be considered a denser
fuel, energy wise. The forced air primary flame must be brought
up to power slowly, to heat the stove, or it will smoke during the
transition. <br>
</p>
<p>-The natural draft makes charcoal. The forced air primary does
as well but the higher power levels tend to burn char. There must
be a lot of air that gets past the migratory pyrolysis front and
into the char.</p>
<p>-I will test a standard pot for you.</p>
<p>-I don't know the cost of commercial skirts. Aprovecho can tell
you.</p>
<p>-My experiments with TLUDs have lead me to 4 basic principles for
mixing in a TLUD:</p>
<p>1. The surface contact between the gasses should be maximized:
Turbulence provides this and so does spreading the flame with a
bluff body.</p>
<p>2. Depth of penetration should be minimized: Turbulence does
this and so does spreading the flame with a bluff body</p>
<p>3. Diffusion: Works in Turbulence and also when spreading the
flame with a bluff body</p>
<p>4. Pressure difference between the gasses, which pushes the
gasses together: Turbulence wastes most of the pressure
difference, spreading the flame with a bluff body maximizes the
use of the pressure difference.</p>
<p>This is a major reason why the stove can burn as clean as it
does, it effectively increases and uses the pressure difference
between the gasses.<br>
</p>
<p>Kirk H.<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 3/26/2021 7:27 AM, Ron Larson wrote:<br>
</div>
<blockquote type="cite"
cite="mid:BAC42C35-E847-45C7-A98F-C12F3644C60C@comcast.net">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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class="">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space;
line-break: after-white-space;" class=""><font class="" size="4">Kirk
and list:</font>
<div class=""><font class="" size="4"><br class="">
</font></div>
<div class=""><font class="" size="4"><span class="Apple-tab-span" style="white-space: pre;"> </span>At </font></div>
<div class=""><font class="" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span><a
href="https://www.youtube.com/watch?v=I0_R9Tfvs4w"
class="" moz-do-not-send="true">https://www.youtube.com/watch?v=I0_R9Tfvs4w</a></font></div>
<div class=""><font class="" size="4">the salesperson for
the stovetec superpot demonstrates boiling water in 15-17
minutes using 4 sticks. Can you add anything about the
comparison with your 7.5 minutes. You of course had much
higher power level - but he could have also.</font></div>
<div class=""><font class="" size="4"><br class="">
</font></div>
<div class=""><font class="" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span>He had a
nice amount of charcoal left. - too bad he didn’t report on
the amount . Can you add anything on your char production,
with your</font></div>
<div class=""><font class="" size="4"><br class="">
</font></div>
<div class=""><font class="" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span>The
super pot shows the value of a skirt. Can you add more
about how much faster the boil occurred with the super pot
and your 5’ of pellets? </font></div>
<div class=""><font class="" size="4"><br class="">
</font></div>
<div class=""><font class="" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span>Can
you gin uo a low cost skirt for your regular pot -
and guesstimate the cost and energy savings?</font></div>
<div class=""><font class="" size="4"><br class="">
</font></div>
<div class=""><font class="" size="4"><br class="">
</font></div>
<div class=""><font class="" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span>Below
your message below on the 24th is another important message
on the 23rd to this list just on pressure issues with your
stove. That duplicated a message on the stove list on the
20th. Therefore I am sending this message also to the
stoves list and will add a few comments later today on those
two messages. </font></div>
<div class=""><font class="" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span> I
consider them very important because they talk about
pressure differences - which we can learn a lot from and I
think this may be the first such report..</font></div>
<div class=""><font class="" size="4"><br class="">
</font></div>
<div class=""><font class="" size="4">Ron</font></div>
<div class=""><font class="" size="4"><span class="Apple-tab-span" style="white-space:pre"> </span><br
class="">
</font>
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">On Mar 24, 2021, at 8:19 PM, Kirk Harris
<<a href="mailto:gkharris316@comcast.net" class=""
moz-do-not-send="true">gkharris316@comcast.net</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="">All,<br class="">
<br class="">
Today I tested the stove with high-power forced
primary air. The 5 inch fuel reactor chamber, with
aprox. 5" height of soft wood pellets, brought 5
liters of water to a rolling boil, in a standard SSM
Super Pot without the lid, from 16 degrees C, in 7.5
minutes. The setting was 6 on the adjustment valve as
the 9 setting was to high and flames started coming
out of the annulus between the combustor and fuel
reactor. The super pot does this because it creates
more flow resistance than the simple pot I had been
using. Then the stove was turned down to the natural
draft setting of 1, where it was stable and there was
no smell of hydrocarbons.<br class="">
<br class="">
The stove is working quite well,<br class="">
<br class="">
Kirk H.<br class="">
<br class="">
On 3/23/2021 11:11 AM, Kirk Harris wrote:<br class="">
<blockquote type="cite" class="">All,<br class="">
<br class="">
Attached is a write-up on the stove I have been
experimenting with over the last several years. I
tried to put it on the stove discussion list, but it
was flagged as spam and so it must have ended up in
every ones spam folder.<br class="">
<br class="">
Kirk H.<br class="">
<br class="">
<br class="">
<br class="">
</blockquote>
<br class="">
-- <br class="">
This email has been checked for viruses by AVG.<br
class="">
<a href="https://www.avg.com/" class=""
moz-do-not-send="true">https://www.avg.com</a><br
class="">
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
<br class="">
</div>
</div>
</blockquote>
</div>
<br class="">
</div>
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