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<font face="Courier New, Courier, monospace"><span
style="font-size: 10pt;" lang="EN-US">Dear
Crispin,<o:p></o:p></span><br>
<br>
<span style="font-size: 10pt;" lang="EN-US">The mean
expenditures for charcoal of an urban household in Zambia are
around 25 USD per
month (consumption of more than 1.3 tons of charcoal per
household per year).
The price of the typical metal charcoal stove is about 5 USD.
The urban
households in Zambia will possibly be able to cause extensive
deforestation of
the country during one generation with these charcoal
braziers. If the price of
charcoal would reflect also the damage on nature and health,
the price would be
still higher. I write this because I cannot agree with your
“too expensive”. A
three stone fire can be extremely expensive, if holistically
calculated. I
designed the fuelwood stoves Ben 2 and Ben 3 (</span><a
href="http://solarcooking.org/Ben3"><span style="font-size:
10pt; color: blue;" lang="EN-US">http://solarcooking.org/Ben3</span></a><span
style="mso-ansi-language:EN-US" lang="EN-US">)<small><span
style="mso-spacerun:yes"></span>for free use keeping this
in mind.</small><o:p></o:p></span><br>
<br>
<span style="font-size: 10pt;" lang="EN-US">With kind regards,<o:p></o:p></span><br>
<span style="font-size: 10pt;" lang="EN-US">Dieter</span></font>
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<br>
Am 27.07.2015 um 19:25 schrieb Crispin Pemberton-Pigott:<br>
</div>
<blockquote cite="mid:COL401-EAS46AD0F313C181875E0B383B18E0@phx.gbl"
type="cite">
<pre wrap="">Dear Jed
Thanks for the pictures. I was thinking you had a ceramic stove (like pottery). For the really cheap stoves I was referring to, there is no metal. Too expensive. There is one called an Anglo Supra and Anglo Supra Nova. They have a metal shell and clay interior. They sell for about $5.50. Usually they burn charcoal but small wood is also used.
I am looking for something that will be made from clay only. Here is the traditional clay Keren Stove.
That is the baseline product. They should also make TLUD’s, I think.
Regards
Crispin
Attach are three more photos of the stove in operation.
We had problems lighting the the fuel from the top to run it in TLUD mode during the tests and greatly discouraged the cook of the food stall in the public market.
However, the high point of the test is upon realizing that the stove can run clean on their stocks of coco charcoal in strong and smokeless flame.
The stove ran for one hour with six pieces of coco charcoal.
The food stall consume one bag (about 35 kilograms of wood charcoal per day) for their four units of wood charcoal stoves.
Joshua B. Guinto
</pre>
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