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<div class="moz-cite-prefix">Ken,<br>
<br>
If you haven't already heard of the Jetstream<br>
<span style="color: rgb(0, 0, 0); font-family: sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
19.1875px; orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); display: inline
!important; float: none;">The wood was loaded into a vertical
tube which passed through the water jacket into a refractory
lined combustion chamber. In this chamber the burning took place
and was limited to the ends of the logs. The water jacket
prevented the upper parts of the logs from burning so they would
gravity feed as the log was consumed.</span><br>
<br>
<a href="http://en.wikipedia.org/wiki/Jetstream_furnace">http://en.wikipedia.org/wiki/Jetstream_furnace</a><br>
<br>
Not a chimney powered stove.<br>
<br>
Alex<br>
<br>
<br>
On 27/12/2013 6:47 PM, Jeff Davis wrote:<br>
</div>
<blockquote cite="mid:52BE1186.4040602@gmail.com" type="cite">Hi
Ken,
<br>
<br>
<br>
<br>
Thanks for the interest!
<br>
<br>
<br>
<blockquote type="cite">This is my main unknown as yet, how would
a split log combust and pyrolise, if presented to the ember bed,
cut end first. I suspect that there would be little penetration
of heat axially, directly through the end, because the ring
structure presents a tough barrier. Therefore, most burning
would have to come radially, and so air nozzles would have to be
positioned to act radially on the sides of the log.
<br>
<br>
</blockquote>
<br>
OK, I should try cutting the wood at 45 deg instead of 90.
Interesting!
<br>
<br>
<br>
<blockquote type="cite">In your design, it looks similar to a
Rocket, but with the fuel container near vertical. However, the
top loading hatch looks fairly airtight? - so unlike a rocket,
there is no air drawn through fuel.
<br>
<br>
</blockquote>
<br>
The next test run will be at almost vertical and more distance
between the tube and grate.
<br>
<br>
This has only run for short periods of time but once it's burning
OK I have been leaving it up. In the middle of the door is an
adjustable air inlet. It's rusted open because of the nasty acidic
coal that was burned in it for a few years.
<br>
<br>
<br>
<blockquote type="cite">Nevertheless it appears to burn well and
produces a healthy amount of good sized charcoal. I would be
very interested to know how it copes with a larger log. Perhaps
by way of experiment, one could be loaded, instead of the 2"
material, to see how it fairs - this would be very useful
information.
<br>
</blockquote>
<br>
<br>
In due time.
<br>
<br>
<br>
<br>
<br>
Best wishes,
<br>
Jeff
<br>
<br>
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