<html><head></head><body style="background-color: rgb(255, 255, 255); line-height: initial;"> <div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Dear Dean</div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">Surely the combination of stove plus fuel are the main two determinants of emissions resulting from combustion?</div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">If you have a fixed TLUD then you could search for the fuel it is best suited to. </div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">If you have a fixed fuel, you could adjust the stove design until it burned best. The only thing I have failed to burn really cleanly is rubber. I think it needs a long residence time and so far stoves are too short. </div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);"><br></div><div style="width: 100%; font-size: initial; font-family: Calibri, 'Slate Pro', sans-serif; color: rgb(31, 73, 125); text-align: initial; background-color: rgb(255, 255, 255);">It would be pretty easy to torrify a batch of pellets. Heat them to 260 or so for a day. </div><div><br></div>Regards <div>Crispin </div><div><br></div><div><br><div id="_originalContent" style=""><div dir="ltr">Dear Ron,<div><br></div><div>We had three women interns here at the research center for a summer who found cleaner burning recipes for the TLUDs gathered from the surrounding forest. Some things like bark make smoke, etc.</div><div><br></div><div>Many pellets smoke when using eucalyptus, etc. Different mixtures of kerosene make more or less smoke in off the shelf stoves.</div><div><br></div><div>I'm wondering if torrified pellets will burn cleaner than normal pellets.</div><div><br></div><div><br></div><div>Best,</div><div><br></div><div>Dean</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, May 23, 2015 at 1:28 PM, Ronald Hongsermeier <span dir="ltr"><<a href="mailto:rwhongser@web.de" target="_blank">rwhongser@web.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
Hi Dean,<br>
I remember that there was a proposed university program (W. Virginia
or the Carolinas??) In view of the deaths(not _many_ but tragic)
that have taken place due to off-loading of pellets at some European
ports (CO in the hold) The torrefaction could lead to a more inert
fuel. That's hopeful speculation on my part however. You would be
transporting some less bound water and the energy density is better
than regular pellets in addition to the lack of liquid or vapor H2O
absorption issue mentioned before-- these would lend efficiencies in
the logistics end of things and an even more uniform fuel than
regular pellets, which tend to absorb quite a bit of water here in
the damp winter weather...<br>
I have to admit that I'm a bit puzzled as to what you mean by
cleaner fuel recipes. What specific pollutant are you interested in
or are you talking about particulate?<br>
If you aren't choking the burn by putting the pot too close, you
should be getting a very clean burn with a TLUD?!?<br>
<br>
regards,<br>
Ron<br>
<br>
<div>On 23.05.2015 22:01, Dean Still wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Ronald,
<div><br>
</div>
<div>I'll keep looking. I think that we shouldn't forget cleaner
fuel recipes as part of the solution.
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Dean</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sat, May 23, 2015 at 12:33 PM,
Ronald Hongsermeier <span dir="ltr"><<a href="mailto:rwhongser@web.de" target="_blank">rwhongser@web.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hi Dean,<br>
I did some searching around on the internet several
years ago on this topic.<br>
I'd like to try torrefied stuff as well, but I struck
out at that time.<br>
No idea where to find them.<br>
The main advantage that I picked up on at that time
was that they should be relatively inert as to picking
up extra water after they were pelletized.<br>
Cleaner burning than what?<br>
clean burning is a control issue, not a fuel issue as
far as I understand. If I understand the concept
correctly, it's like using part of the large molecules
initially broken out (cracked) by the heat in the
reaction vessel to coat the surfaces of the remaining
unpyrolized material. This should burn quite okay in a
TLUD.<br>
<br>
regards,<br>
Ronald von Nasennebenhöhlenhölle (but I'm coming back)<br>
<br>
<br>
<div>On 23.05.2015 20:56, Dean Still wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi All,
<div><br>
</div>
<div>I'd like to try torrified pellets in a TLUD
under the emissions hood.</div>
<div><br>
</div>
<div>Any ideas on where to find them?</div>
<div><br>
</div>
<div>Or if it should be cleaner burning?</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Dean</div>
</div>
<br>
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