<div dir="ltr"><div>Regarding evapourative coolers, 8°C is about the maximum available in a dry climate. About 2°C in my local temperate climate and very little if any in a hot humid one I would think. This I learnt from someone in a position to know :-)<br>
<br></div>Regards<br><br>Jason<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Dec 25, 2013 at 5:00 PM, Jeff Davis <span dir="ltr"><<a href="mailto:jeffdavis0124@gmail.com" target="_blank">jeffdavis0124@gmail.com</a>></span> wrote:<br>
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<div>I'm sure this is not the case but a
refrigerator can be made from two clay pots, one smaller than the
other, charcoal and a cloth top. The smaller pot fits inside the
larger one with charcoal (or sand) betwixt them. Add water to the
charcoal and cloth plus evaporation. I also doubt that it would
work in the steamy jungles. Just thought I'd toss that out there.<br>
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<a href="http://www.youtube.com/watch?v=ZNKifJHqScc" target="_blank">http://www.youtube.com/watch?v=ZNKifJHqScc</a><br>
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Marry Christmas,<br>
Jeff<div class="im"><br>
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On 12/24/2013 02:52 PM, Ronal W. Larson wrote:<br>
</div></div><div class="im">
<blockquote type="cite"><b> I hope someone on this list has looked at
efforts to mimic the Terra Preta soils. It seems clear they did
much more than just put out ash - which seems to have been what
the vast majority of aboriginal slash and burn cultures did. I
favor an argument that the char came from what happened during
and after cooking (If wood is easy to come by, you can make a
lot of char in a 3-stone arrangement</b><b>. I have seen one
argument for an approach like HTC.</b></blockquote>
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