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Philip,<br>
<br>
You are mostly correct. Actually wood takes up (has) too much
WEIGHT. Wood has 3 times (or more, if the char is poorly made) the
ENERGY value of charcoal that could come from that char. But it
has about 5 times the DRY weight of the char, plus there can be 20
to 50% moisture content to make the wood even heavier. <br>
<br>
And the charcoal has almost double (30 vs. 16) the energy content
by weight, but char is so much lighter per unit of volume. <br>
<br>
Apart from the transportation issue, I believe that the appeal of
charcoal is that it does not smoke (not much). CO is invisible and
deadly, but the people learn to cook on the balcony or keep some
air flowing. And it does not turn the bottom of the pots black.<br>
<br>
Paul<br>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
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>
<div class="moz-cite-prefix">On 9/24/2017 10:50 AM,
<a class="moz-txt-link-abbreviated" href="mailto:plloyd@mweb.co.za">plloyd@mweb.co.za</a> wrote:<br>
</div>
<blockquote type="cite"
cite="mid:fe717206-48db-4d02-9b6a-ea16219fe757@CY1NAM02FT047.eop-nam02.prod.protection.outlook.com">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
Just a thought on Sub Saharan charcoal use. As Africa urbanizes,
so it needs energy to cook. Wood takes up too much volume, and the
roads are primitive. So it makes sense to use charcoal. A bicycle
load will keep ten homes cooking for a week. <br>
The use of char oal has everything to do with logistics and
nothing to do with the environment.<br>
Philip<br>
<br>
<br>
<br>
Sent from my Huawei Mobile
<div class="quote" style="line-height: 1.5"><br>
<br>
-------- Original Message --------<br>
Subject: Re: [Stoves] stoves and credits again<br>
From: Nikhil Desai <pienergy2008@gmail.com><br>
To: Ron Larson <rongretlarson@comcast.net><br>
CC: Andrew Heggie <aj.heggie@gmail.com>,Crispin
Pemberton-Pigott <crispinpigott@outlook.com>,Discussion
of biomass cooking stoves <stoves@lists.bioenergylists.org><br>
<br>
<br type="attribution">
<blockquote class="quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Ron: <br>
<br>
What makes you believe that users of
biomass-fuelled stoves are predominantly growers
(of biomass)? <br>
<br>
Saw the figures for urban charcoal markets in
Sub-Saharan Africa lately? Or looked at
non-household cooking (in my view roughly 50% of
cooking energy consumption worldwide)? <br>
<br>
Nikhil<br>
<div class="gmail_extra">
<br>
<div class="gmail_quote">On Thu, Sep 21, 2017 at
10:54 PM, Ronal W. Larson <span dir="ltr"><<a
href="mailto:rongretlarson@comcast.net"
target="_blank" moz-do-not-send="true">rongretlarson@comcast.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">
<div>Andrew and list:</div>
<div><span class="">
<blockquote type="cite">
<div>
<div>
<blockquote type="cite"> </blockquote>
<br>
There appears to be a win win
situation here and I gather
there is<br>
still a vast part of equatorial
Africa where annual burning
takes<br>
place. However it brings me to
another reason I like the idea,
though<br>
not the practicalities, of a
householder-subsistance farmer
being paid<br>
a subsidy funded by the
developed world. The trouble is
I have a<br>
parochial view and not a good
worldview of what types of
persons<br>
depend on biomass fuelled
stoves. Are they also
predominantly growers?<br>
</div>
</div>
</blockquote>
<div><br>
</div>
</span>
<div><span class="m_8387032066972498430Apple-tab-span" style="white-space:pre-wrap"> </span><b>[RWL9:
Yes to Andrew’s last question. I
disagree with Andrew calling
himself “parochial” - when he
supports (as do I) the ethics of <i>“a
subsidy funded by the developed
world”.</i></b></div>
<div><b><br>
</b></div>
<div><b><span class="m_8387032066972498430Apple-tab-span" style="white-space:pre-wrap"> </span> </b></div>
<b>[RWL10: Agree totally. And I think
this is what will eventually kill the
geoengineering technology that is
often placed ahead of biochar -
BECCS. In BECCS, as with “clean
coal”, the CO2 from combustion (never
pyrolysis) is placed, as liquid, deep
underground. Major expenses needed
to protect the world’s soil are not
needed for biochar. Soil quality is
closely linked to carbon content - and
biochar does this with no penalty -
while apparently being the cleanest
and most efficient of all possible
solid-fuel stoves.</b></div>
<div><br>
</div>
<div><b>`Andrew - thanks for your above
rebuttal to Crispin.</b></div>
<div><b><br>
</b></div>
<div><b>Ron<br>
</b><span class="">
<blockquote type="cite">
<div>
<div> </div>
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</blockquote>
</span></div>
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<br>
<br>
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</stoves@lists.bioenergylists.org></crispinpigott@outlook.com></aj.heggie@gmail.com></rongretlarson@comcast.net></pienergy2008@gmail.com></div>
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