<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<div class="moz-cite-prefix">Jock,<br>
<br>
I did not understand
<blockquote type="cite">Not having any secondary air introduced
into the pyrolysis chamber is brilliant. I wish I had thought
of it<br>
</blockquote>
Please explain, or re-send how you explained it before.<br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Paul S. Anderson, PhD aka "Dr TLUD"
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>
On 5/5/2013 10:05 AM, Jonathan P Gill wrote:<br>
</div>
<blockquote cite="mid:6E021568-37C5-4809-A38E-EE17BA4E1066@me.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
Fellow stovers,
<div><br>
</div>
<div>
<div>This morning, I loaded my Rim Fire iCan TLUD with 1500
grams of Vermont wood pellets. Powered with a muffin fan, it
runs like a champion.</div>
<div><br>
</div>
<div>1,000 grams of 14C water in an open top can set on top of
the grate boiled in 10 minutes . Old school.</div>
<div><br>
</div>
<div>520 grams of 14C water in a Swiss Volcano style unit set on
top of the grate, boiled in 3:20 minutes. The boil was so
vigorous that the water spilled over the top and put out the
gas fire. New school.</div>
<div><br>
</div>
<div>Re-lit the gas with no problem as the water merely splashed
on the burner grate and never made it into the pyrolysis
chamber. Not having any secondary air introduced into the
pyrolysis chamber is brilliant. I wish I had thought of it.</div>
<div><br>
</div>
<div>The syngas flames are still orange, but it sure works like
gang busters with no holes in the burner plate. I observe that
after the yellow wood gas flames vanish at the end of the run,
a deep blue flame is present on top of the burner grate. This
lasts for a few minutes and then it too vanishes. Even with
the fan on full, the unit self extinguishes with zero smoke.
With wood pellet feed stock, there is only minor ash residue.
The quenching water does not turn milky.</div>
<div><br>
</div>
<div>Notes: </div>
<div><br>
</div>
<div>1. After the second boiling test, I replace the open top
can on the burner. It reboiled and kept boiling boiling until
the feed stock as exhausted at about the 45 minute mark.
Approximately 95% of the water was evaporated, as only 49
grams of water were left in the can. The water had been out
all night and had stabilized to ambient temperatures. It had
quite possibly not yet warmed up to the air temp of 14C.</div>
<div><br>
</div>
<div>2. The pH of the quenching water was about 7, ie neutral.
Grass quenching water tests at about pH 11.</div>
<div><br>
</div>
<div>3. The resulting charcoal has an extremely clean nose and
easily passes Hugh's "no soap test".</div>
<div><br>
</div>
<div>4. Wood pellets are a lot nicer to work with than grass
pellets. The exhaust gasses of grass pellet pyrolysis tend to
be messy. This possibly indicates that the temperature in the
system is not hot enough to crack the oils and tars peculiar
to grasses.</div>
<div><br>
</div>
<div>5. The Rim Fire iCan is based on the fan powered TLUD work
of Prof. Bolinio, described in 2005, and subsequent work by
Paul Olivier. Like their designs, no secondary air is
introduced into the pyrolysis chamber. My basic departures
from their designs are that 1] I use a burner plate whose
diameter is slightly LESS than the diameter of the pyrolysis
chamber; 2] I use no holes at all in the burner plate; 3] I
use fewer and smaller primary air holes in three concentric
rings. The burner plate is essentially the opposite of a
concentrator ring often used in TLUDS that introduce secondary
air into the pyrolysis chamber.</div>
<div><br>
</div>
<div>6. Currently I am working with a fixed speed muffin fan.
Clearly, a variable speed fan will offer many advantages. I
hope to have one latter this week. The design goal is a fan
than can be powered by either a 9 volt battery or a small
solar cell. A key goal is a free standing unit that is not
grid dependent. I am working on this with a friend who is
former General Dynamics engineer.</div>
<div><br>
</div>
<div>If you want more details and photos, please send me a note.</div>
<div><br>
</div>
<div>More as it is.</div>
<div><br>
</div>
<div>Cheers from VT,</div>
<div><br>
</div>
<div>Jock</div>
<br>
<br>
<div apple-content-edited="true">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space; ">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space; ">
<div style="word-wrap: break-word; -webkit-nbsp-mode:
space; -webkit-line-break: after-white-space; ">
<div>Jonathan P Gill</div>
<div>Peacham, VT.</div>
<div><a moz-do-not-send="true"
href="mailto:jg45@icloud.com">jg45@icloud.com</a></div>
<div><br>
</div>
<div><span style="color: rgb(0, 86, 214); font-family:
arial, sans-serif; background-color: rgb(255, 255,
255); ">Extract</span><span style="color: rgb(0, 86,
214); font-family: arial, sans-serif;
background-color: rgb(255, 255, 255); "> </span><span
style="color: rgb(0, 86, 214); font-family: arial,
sans-serif; background-color: rgb(255, 255, 255); ">CO2
from the atmosphere. </span></div>
<div><span style="color: rgb(0, 86, 214); font-family:
arial, sans-serif; background-color: rgb(255, 255,
255); "><br>
</span></div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
Stoves mailing list
to Send a Message to the list, use the email address
<a class="moz-txt-link-abbreviated" href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>
to UNSUBSCRIBE or Change your List Settings use the web page
<a class="moz-txt-link-freetext" href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a>
for more Biomass Cooking Stoves, News and Information see our web site:
<a class="moz-txt-link-freetext" href="http://stoves.bioenergylists.org/">http://stoves.bioenergylists.org/</a>
</pre>
</blockquote>
<br>
</body>
</html>