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Stovers, and Gasifier folks,<br>
<br>
Let's give a big round of applause to Colorado State University and
also to Envirofit for their strong entry into the world of gasifier
cookstoves!!!<br>
<br>
One million dollars worth of encouragement for a strong entry is
fantastic. Congratulations. Details are at:<br>
<br>
<div class="moz-forward-container">
<a moz-do-not-send="true"
href="http://www.news.colostate.edu/Release/6485">http://www.news.colostate.edu/Release/6485</a><br>
<br>
The press release states:<br>
<blockquote type="cite">
<p>“It [semi-gasifier] separates the combustion process into two
phases. In the first phase, combustible gasses are released
from solid biomass. In the second phase, those combustible
gasses are mixed with air and create a secondary flame,”
Tryner said.</p>
</blockquote>
I think that definition is a good one for "gasifiers" and is
certainly how the term has been used for a decade and more
regarding cooking stoves. So I will ask the first question: <br>
<br>
Please define the difference between a "semi-gasifier" and a
"gasifier" in the terminology used by CSU. (I hope you just drop
the "semi-" part.)<br>
<br>
The folks at CSU do GREAT work, and I am sure that their entry
into this aspect of improved cookstoves will result is some great
benefits.<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>
<br>
<br>
-------- Original Message --------
<table class="moz-email-headers-table" border="0" cellpadding="0"
cellspacing="0">
<tbody>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject:
</th>
<td>Re: you and Hugh and biochar</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Tue, 30 Oct 2012 08:23:21 -0600</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>John Field <a class="moz-txt-link-rfc2396E" href="mailto:john.l.field@gmail.com"><john.l.field@gmail.com></a></td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td>Paul Anderson <a class="moz-txt-link-rfc2396E" href="mailto:psanders@ilstu.edu"><psanders@ilstu.edu></a></td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">CC: </th>
<td>Hugh McLaughlin <a class="moz-txt-link-rfc2396E" href="mailto:wastemin1@verizon.net"><wastemin1@verizon.net></a></td>
</tr>
</tbody>
</table>
<br>
<br>
<br>
<br>
However, the general consensus is that only forced-draft gasifier
cookstoves deliver remarkably low emissions, whereas natural draft
gasifiers tend to be similar or only marginal better than most
rocket stove designs. This is an impression reinforced by my own
(very limited) work, as well as by the attached recent paper by
Abishek Kar of the Surya project. In contrast, the recent paper
by Jim Jetter's group is more difficult to interpret, and includes
a natural draft gasifier with better high-performance emissions
than all other stoves tested, as well as a forced-draft gasifier
among the worst performers. Go figure!<br>
<br>
<br>
<br>
<br>
<br>
<div class="gmail_quote">On Mon, Oct 29, 2012 at 5:35 PM, John
Field <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:john.l.field@gmail.com" target="_blank">john.l.field@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
Apologies for the lack of communication here- I was away all
last week at the ASA-SSSA-CSSA conference. No new
stoves/biochar news at the moment; I'm totally preoccupied
preparing for my prelim exam for the next several weeks. <br>
<br>
Hope you well,<br>
john
<div class="HOEnZb">
<div class="h5"><br>
<br>
<br>
<br>
<br>
<div class="gmail_quote">On Mon, Oct 29, 2012 at 5:05 PM,
Paul Anderson <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">John,<br>
<br>
Sorry that you and Hugh did not meet when he was in
Boulder last week.<br>
<br>
Are there any more developments involving you and
stoves and biochar?<br>
<br>
Doc<span><font color="#888888"><br>
<br>
-- <br>
Paul S. Anderson, PhD aka "Dr TLUD"<br>
Email: <a moz-do-not-send="true"
href="mailto:psanders@ilstu.edu" target="_blank">psanders@ilstu.edu</a>
Skype: paultlud Phone: <a
moz-do-not-send="true"
href="tel:%2B1-309-452-7072"
value="+13094527072" target="_blank">+1-309-452-7072</a><br>
Website: <a moz-do-not-send="true"
href="http://www.drtlud.com" target="_blank">www.drtlud.com</a><br>
<br>
</font></span></blockquote>
</div>
<br>
<br clear="all">
<br>
</div>
</div>
<span class="HOEnZb"><font color="#888888">-- <br>
Thank you,<br>
John Field<br>
NSF IGERT Fellow, Multidisciplinary Approaches to
Sustainable BioEnergy<br>
Department of Mechanical Engineering, Colorado State
University<br>
<br>
email: <a moz-do-not-send="true"
href="mailto:john.L.field@colostate.edu" target="_blank">john.L.field@colostate.edu</a><br>
cell: <a moz-do-not-send="true"
href="tel:%28317%29%20748-9792" value="+13177489792"
target="_blank">(317) 748-9792</a><br>
<a moz-do-not-send="true"
href="http://bioenergy-igert.colostate.edu"
target="_blank">bioenergy-igert.colostate.edu</a><br>
<a moz-do-not-send="true"
href="http://bioenergyigert.wordpress.com"
target="_blank">bioenergyigert.wordpress.com</a><br>
<br>
</font></span></blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
Thank you,<br>
John Field<br>
NSF IGERT Fellow, Multidisciplinary Approaches to Sustainable
BioEnergy<br>
Department of Mechanical Engineering, Colorado State University<br>
<br>
email: <a moz-do-not-send="true"
href="mailto:john.L.field@colostate.edu" target="_blank">john.L.field@colostate.edu</a><br>
cell: (317) 748-9792<br>
<a moz-do-not-send="true"
href="http://bioenergy-igert.colostate.edu" target="_blank">bioenergy-igert.colostate.edu</a><br>
<a moz-do-not-send="true"
href="http://bioenergyigert.wordpress.com" target="_blank">bioenergyigert.wordpress.com</a><br>
<br>
<br>
<br>
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