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<div class="moz-cite-prefix">Hi,<br>
<br>
Nice unit. Forced air greatly helps. Are you willing to post
or share diagrams of the unit? <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 6/16/2013 5:51 PM, M. Nurhuda wrote:<br>
</div>
<blockquote
cite="mid:05e4628119b0d41a1fb3e713906446c3.squirrel@webmail.ub.ac.id"
type="cite">
<pre wrap="">Dear All,
Perhaps gasifier/burner like this (see attached picture) can be used to
burn coconut husk easily.
It is an open-top gasifier, such that user can easily add fuel from the
top. I also employed semi cyclonic system to filter the dusk.
That was three years ago.
Regards
M. Nurhuda
</pre>
<blockquote type="cite">
<pre wrap="">Dear All
I have spent some time trying to burn whole coconut husks – some may
remember the reported experiments some time in 2003.
The motivation was the fact that Mozambique has a huge amount of the
material lying around and while it is used for a domestic fuel, it is
pretty awful. It is heaped around pots and burned with a great deal of
smoke.
I was in Swaziland at the time (where New Dawn Engineering is located) and
was developing the Vesto. A number of experiments were conducted using a
Tsotso stove which can burn just about anything. The observations were
that the husks can burn very cleanly (visibly clean, at least) if it is
burning in a staged process. While the fuel can hold considerable
moisture, once it is heated to the point of getting rid of the steam, it
is able to burn well, producing a white smoke that supports combustion if
given preheated secondary air.
In order to sustain a burn it is essential that the fuel be dried enough.
It is likely that any practical device will have a method of supply new
fuel continuously or in batches, perhaps pushed in from the side or the
bottom. Preheating the primary air is essential because of the retained
moisture.
Because the ‘fuel particles’ are so large, the device will have to be
large. If it is a TLUD or downdraft (BLDD) stove it implies that he
chamber will be >6 times the particle size. If the husks are not cut into
pieces that implies a diameter of perhaps 60-75 cm. I guess the power
level would 10-20 kW. To be useful the things should perhaps be 1.5-2
metres high.
At that size, it could be used to make soft charcoal on a reasonable scale
for briquetting. Given the vast local market for charcoal in Mozambique it
might make sense, all things considered.
Regards
Crispin
Paul
What would a TLUD sized for coconut husks look like? Can you suggest
dimensions and a fuel size?
Tom
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