<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Alex cc list</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>1. Sorry that I didn’t see Paul’s queries or your answers before my comments and queries of a few minutes ago. You can ignore some of mine that you covered below. The new photo was helpful as was the description of some of the variabilities.</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>2. One thing I didn’t follow was this: “…<i class=""> paper thin sheet of blue….”</i></div><div class=""><br class=""></div><div class="">Ron</div><div class=""><br class=""></div><br class=""><div><blockquote type="cite" class=""><div class="">On Sep 29, 2016, at 6:27 PM, alex english <<a href="mailto:aenglish444@gmail.com" class="">aenglish444@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><br class=""><div class="gmail_extra"><br class=""><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class=""><br class="">
<br class="">Paul<br class="">
<br class="">
This leads to some questions. Some are clearly for you to tell of
your experiences. Others are suggestions of what other people
could do if they wanted to get involved in replication. There are
some variables (device characteristics) that are not stated, so this
is not yet something that a casual observer would do without further
understanding.<br class="">
<br class="">
1. Is you unit with forced primary air? </div></blockquote><div class="">No. I light the fuel with a wide open 3 inch diameter primary air. Once it is charring across the surface I add the burner and light the flame and begin reducing primary air. With the flame in the video the opening might be all of a centimeter square.</div><div class=""><br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class=""> Please describe. If not
with forced primar air, is there additional riser (chimney) above
the zone of ignited gases?<br class=""></div></blockquote><div class=""> Here is a pic of the pieces.</div><div class=""><a href="https://goo.gl/photos/MQ27RrMQuoFY2Qmy8" class="">https://goo.gl/photos/MQ27RrMQuoFY2Qmy8</a><br class=""></div><div class="">The two inch pipe acts as a chimney for the tlud fuel reactor. The six inch pipe acts mostly as a chimney to draw secondary air. The secondary air opening is essentially the circumference of the two inch pipe, one inch wide. That is a cross sectional area twice that of the two inch pipe circle opening, below it, which is providing the fuel.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class="">
<br class="">
2. Is there any turn-down capability? </div></blockquote><div class="">Yes. Turn up or turn down changes flame speed and the excess air. Total control over primary and secondary air is something I have done. It should be done by someone with the right test equipment. You can actually dial up and down the CO, and I would like to see that linked with particle emissions data. We sort of tried to do this at the stove camp last summer with a different burner. It would work better with this one.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class=""> And if turn-down of primary
air does occur, we would expect the zone of the ignited gases to be
lower in the funnel, right? <br class=""></div></blockquote><div class="">Not if the flame speed of the mix is reduced more than the velocity is reduced. The blue flame can rise up into the chimney and become a paper thin sheet of blue.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class="">
<br class="">
3. What might happen if there was forced secondary air?<br class=""></div></blockquote><div class="">You can remove the chimney. I have done it with other models. </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class="">
<br class="">
4. If a flame/spark was introduced at the point of the entry of the
secondary air, what would happen? .</div></blockquote><div class="">That is how I light the flame. If the mix is right it can be lit from above.You can quench the flame by choking off the secondary air. Open it up and it lights itself from the hot metal.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class="">..<br class="">
a. a yellow flame upward in the funnel?<br class="">
b. extinguished spark/flame (that is, no ignition)?<br class="">
c. the flame goes up to the top and becomes blue without any flame
lower down?<br class="">
<br class="">
5. How do you actually ignite the pre-mixed gases? That is, when
and where do you first ignite the gases that were shown in the
video?<br class="">
<br class="">
6. Please comment on extending the narrow (2 inch diameter) section
so that the blue flame would be even further from the entrance of
the secondary air. How far? And if the diameter was even
smaller, could the length be even longer?<br class=""></div></blockquote><div class="">Perhaps. Anywhere below the flame and the metal cools you get some condensing tarry liquids. They build up on the pipe and run down into the chamber and are charred. Some heat recycling would reduce it.</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class="">
<br class="">
7. Have you experimented with sending the pyrolytic gases a longer
distance before the entry of the secondary air?<br class=""></div></blockquote><div class="">No. The length was just enough to keep the pressure at the top of the fuel chamber negative. Otherwise it would leak a bit of smoke.</div><div class=""><br class=""></div><div class="">Alex </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF" class="">
<br class="">
VERY interesting!!!!<br class="">
<br class="">
Paul<br class="">
<pre cols="72" class="">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a href="mailto:psanders@ilstu.edu" target="_blank" class="">psanders@ilstu.edu</a>
Skype: paultlud Phone: <a href="tel:%2B1-309-452-7072" value="+13094527072" target="_blank" class="">+1-309-452-7072</a>
Website: <a href="http://www.drtlud.com/" target="_blank" class="">www.drtlud.com</a></pre>
<div class="">On 9/29/2016 12:03 PM, alex english
wrote:<br class="">
</div>
<blockquote type="cite" class=""><p dir="ltr" class="">Paul,<br class="">
See below for a link to a picture. <br class="">
The gasses rise through a 2 inch diameter pipe which draws from
a 12 inch diameter fuel chamber. Secondary air is introduced
tangentially below the smooth funnel which expands to 6 inches.
The picture shows that the high heat from the flame affects only
the top of the funnel. So there is an 8 inch + distance where
premixing occurred and velocity exceeds the flame speed.</p><p dir="ltr" class=""><a href="https://goo.gl/photos/GB9PMaf6dX3n8cQ78" target="_blank" class="">https://goo.gl/photos/GB9PMaf6<wbr class="">dX3n8cQ78</a></p>
</blockquote>
<blockquote type="cite" class="">
<div class="">See video by Alex:<br class="">
</div>
<div class="">Here is a recent video of my premixed blue tlud-gas flame.
Its all geometry, no obstruction.</div>
<div class=""><a href="https://www.youtube.com/watch?v=jnV1e60NTss&feature=youtu.be" target="_blank" class="">https://www.youtube.com/watch?<wbr class="">v=jnV1e60NTss&feature=youtu.be</a></div>
</blockquote>
<br class="">
<blockquote type="cite" class=""><p dir="ltr" class="">Alex</p>
<br class="">
<fieldset class=""></fieldset>
<br class="">
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