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<body bgcolor="#FFFFFF" text="#000000">Dear Paul<br/><br/>Good point. Charcoal has a bad name re the lighting speed because most people do not know how to light it quickly. In the case of a Sarai it is ignited with a piece of paper and burns well in a tiny chimney. <br/><br/>With a 'toy Jiko' like the Senegal tea stove it is pretty slow but that is the point. It heats one cup of water and keeps it hot. <br/><br/>It would be nice if Peter Coughlin commented on this. He reads the list. He has been promoting a conical accelerator over a standard load in the POCA. It reduces ignition time from 20 minutes to 2 and saves a bit of fuel to boot. <br/><br/>The cone dimensions are relevant to the diameter of he fuel pile. The one Peter makes is 500mm high, 125mm diameter at the bottom and 75 at the top. <br/><br/>Light the tinder and place the cone on. It is less than a minute to get flames out the top after 2 minutes is I'd properly lit. <br/><br/>In Zambia people use a tube not a cone which is much less effective. Maybe 50 dia. <br/><br/>The cone saves enough to pay for itself. <br/><br/>There is a general rule about high carbon fuels which is that they need draft to get going as the Hydrogen found in biomass is not available (easy, high heat). <br/><br/>Regards<br/>Crispin<hr/><div><b>From: </b> Paul Anderson <psanders@ilstu.edu>
</div><div><b>Date: </b>Mon, 22 Oct 2012 08:19:29 -0500</div><div><b>To: </b>Discussion of biomass cooking stoves<stoves@lists.bioenergylists.org></div><div><b>Cc: </b>Crispin Pemberton-Pigott<crispinpigott@gmail.com></div><div><b>Subject: </b>Re: [Stoves] Very small stoves and reheating food</div><div><br/></div>
<div class="moz-cite-prefix">Crispin and all,<br>
<br>
Please correct or confirm my impressions that charcoal would not
be very good for a short 5 to 10 minute heating job. Charcoal is
relatively slow to start. (But it could be fine for food
warming or tea during a night-guard's many hours in the cool/cold
of the night).<br>
<br>
And the Sarai cooker uses little fuel but is for cooking multiple
foods in vertical containers and is not associated with short-term
cooking.<br>
<br>
If you have experience, please comment about charcoal and
short-term fire needs. <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 10/22/2012 1:24 AM, Crispin Pemberton-Pigott wrote:<br>
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<p class="MsoNormal"><span style="color:#1F497D">Dear Friends<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Very small
fires for warming food (in developing countries) are often
made using charcoal. A Senegalese night guard’s tea making
stove is a good example. Food warming can be done using
waste charcoal. A samovar uses charcoal because it is
indoors. The Sarai stove uses about 100 g of processed
charcoal dust. There seems to be consumer and market
agreement that this works.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Crispin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">[Joyce]</span><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US"><o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US">I lived in a tropical
country and had an employer-provided fridge and freezer but
no electricity for about six months. (I did store food
supplies in both, as they kept insects out of the cornflakes
etc.) Since I was working as well as my husband, I got into
the <o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US"><o:p> </o:p></span></p>
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