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Hi all, don't want to complicate things unnecessarily, but isn't it
axiomatic that even the same species of biomass grow in a radically
different nutrient environment (soil) will have different levels of
possible poisonous particles in the burnoff?<br>
<br>
regards,<br>
Ron von Oktoberfestsafedistance<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 24.09.2015 21:05, Crispin
Pemberton-Pigott wrote:<br>
</div>
<blockquote
cite="mid:COL401-EAS3521AD4E24B6D548F903054B1430@phx.gbl"
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Dear Todd</div>
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<br>
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You raise an interesting point and it should not be missed. </div>
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<br>
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Wood and coal both contain mercury, sulphur, lead, uranium and
other heavy metals, and the fire emissions contain fly ash,
polycyclic aromatic hydrocarbons, numerous chemical species, and
particles of incomplete combustion including condensed
volatiles. </div>
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<br>
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It would not be fair to ignore the emissions from any fire. Also
it is unfair to require testing on coal fires and not wood
fires. The inherent emissions are different for different fuels.
Categories of fuel include: </div>
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<br>
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Wood</div>
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Other biomass</div>
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Peat lignite</div>
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Coal</div>
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Semi-coked fuels</div>
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Coke</div>
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Charcoal</div>
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Densified biomass</div>
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Torrefied wood</div>
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<br>
</div>
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The toxic contents occur in different concentrations and
combinations. It is reasonable to assess fuels individually.
There are toxic woods and toxic coals. There are toxic
emissions. Toxicity is strongly dependent on concentration. </div>
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<br>
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When you consider what and how well something needs to be burned
one rule should apply to all. No pet fuels. </div>
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<br>
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Regards </div>
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Crispin </div>
<br>
<div>
<div dir="ltr">Stovers:
<div><br>
</div>
<div>I'm confused. Coal & Biomass stove disconnect? No
one is discussing the dissimilarities.</div>
<div><br>
</div>
<div>Is this a logical? The discussion of coal combustion
must address Mercury, fly ash and other heavy metal
pollution, not just run of the mill biomass combustion
pollution. Water and air pollution contamination are other
major health concerns. Mining and transporting coal has
wide documented health impacts.</div>
<div><br>
</div>
<div>Don't we have to ask although coal maybe combusted
cleanly with very well designed stove compared to an
inefficient coal stoves, advanced scrubber technologies are
not affordable or practical for household stoves.</div>
<div><br>
</div>
<div>Do any of the biomass stove testing entities have or can
afford coal emission testing technologies? Currently I am
not aware of any biomass testing organization that has the
sophistication or equipment for heavy metal emission
testing, or am I incorrect?</div>
<div><br>
</div>
<div>Regards,</div>
<div><br>
</div>
<div>Todd Albi, SilverFire, </div>
</div>
<div class="x_gmail_extra"><br>
<div class="x_gmail_quote">On Wed, Sep 23, 2015 at 7:41 PM,
Frank Shields <span dir="ltr">
<<a moz-do-not-send="true"
href="mailto:franke@cruzio.com" target="_blank">franke@cruzio.com</a>></span>
wrote:<br>
<blockquote class="x_gmail_quote" style="margin:0 0 0 .8ex;
border-left:1px #ccc solid; padding-left:1ex">
Dear Stovers,<br>
<br>
Coal and biomass stoves:<br>
<br>
Similarities:<br>
<br>
1) They both have the same goal of producing a clean
secondary flame used to boil water.<br>
2) They both have achieved this goal (Crispin and Dean -
and others)<br>
3) They both have the three types of energy: a) pyrolysis
gases b) solid-C > CO and c) CO > CO2<br>
4) During optimization the three energy types are adjusted
via primary air to produce the best ratio.<br>
<br>
Because they are so much the same and manipulated the same
to optimize conditions for the secondary I believe the
coal stoves should be included in our discussions. They
start with different ratios of the three energy types and
it would be very interesting (to me) to know what the
ratio is just before entering the secondary flame when
burning clean. I wonder if they are the same or if we can
learn ranges and limits to the ratios we need to achieve.
As we get better testing techniques to study what goes on
in combustion chambers it would aid us to include the info
from coal stoves.<br>
<br>
Real problem is Stove Labs need more money! That to
purchase testing equipment for their research, added
personal and they should be testing more stoves.<br>
<br>
as I see it…<br>
<br>
Regards<br>
<br>
Frank<br>
<br>
<a moz-do-not-send="true" href="mailto:franke@cruzio.com">franke@cruzio.com</a><br>
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