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<DIV>Dear Bodie </DIV>
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<DIV>Thanks for the succinct summery---</DIV>
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<DIV>Michael N Trevor</DIV>
<DIV>Marshall Islands</DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=bodie.cabiyo@gmail.com
href="mailto:bodie.cabiyo@gmail.com">Bodie Cabiyo</A> </DIV>
<DIV><B>Sent:</B> Sunday, November 02, 2014 3:51 PM</DIV>
<DIV><B>To:</B> <A title=stoves@lists.bioenergylists.org
href="mailto:stoves@lists.bioenergylists.org">Discussion of biomass cooking
stoves</A> </DIV>
<DIV><B>Subject:</B> Re: [Stoves] Why not high mass stoves?</DIV></DIV></DIV>
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<DIV dir=ltr>Hi Huck,
<DIV> </DIV>
<DIV>I've been working on adapting high-mass stoves to have better thermal
efficiency because of that very article. </DIV>
<DIV> </DIV>
<DIV>Simply put, the problem is with the specific heat of the insulating
material. True, high-mass materials like earth or sand have insulative value,
but they have very high specific heat and thus absorb much of the heat that
would go into a cooking vessel. In contrast, sheet metal has a low specific
heat, so it absorbs relatively little thermal energy to reach a maximum
temperature, after which point you're only heating the air surrounding the
stove. Air, of course, has very low specific heat and thus it takes very little
energy to warm the air immediately next to the stove body (though it would be
more ideal to trap a layer of air so that you're not continually heating new
air). </DIV>
<DIV> </DIV>
<DIV>Hope this helps! </DIV>
<DIV>Bodie</DIV>
<DIV class=gmail_extra>
<DIV> </DIV>-- <BR>
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<DIV dir=ltr><B><BR><FONT color=#666666>Bodie Cabiyo</FONT></B>
<DIV><FONT color=#666666><B><BR></B></FONT>
<DIV><FONT color=#666666>Professional: <A href="http://carbonalternatives.org"
target=_blank>carbonalternatives.org</A></FONT></DIV>
<DIV><FONT color=#666666>Personal: <A
href="http://concentricchange.wordpress.com"
target=_blank>concentricchange.wordpress.com</A><BR></FONT><BR><U><B><FONT
color=#274e13>Food for Thought:</FONT></B></U><I><BR>"A mountain is composed of
tiny grains of earth. The ocean is made up of tiny drops of water. Even so, life
is but an endless series of little details, actions, speeches, and thoughts. And
the consequences whether good or bad of even the least of them are
far-reaching."</I><BR>- Sri Swami Sivananda<BR>
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