<HTML><HEAD></HEAD>
<BODY dir=ltr>
<DIV dir=ltr>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>Dean</DIV>
<DIV>if the surfaces have low long wave thermal emissivity they will be better
radiant heat insulators and the combustion cambers will run hotter. shiny
surfaces generally tend to be that way however dull black color tends to have
greater long wave emissivity.</DIV>
<DIV> </DIV>
<DIV>shinny black nickel or black chrome make good selective surfaces for solar
heat collectors(see farrington danniels)</DIV>
<DIV> </DIV>
<DIV>My guess is that the inside of a hot combustion chamber would not stay
shinny very long</DIV>
<DIV> </DIV>
<DIV>God bless</DIV>
<DIV>Larry</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<DIV style="FONT: 10pt tahoma">
<DIV><FONT size=3 face=Calibri></FONT> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=deankstill@gmail.com
href="mailto:deankstill@gmail.com">Dean Still</A> </DIV>
<DIV><B>Sent:</B> Friday, April 24, 2015 1:07 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> [Stoves] Inner color of combustion
chamber?</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<DIV dir=ltr>Hi All,
<DIV> </DIV>
<DIV>At the Aprovecho weekly meeting we were discussing how to improve
performance in a Rocket stove. We were wondering about radiation.</DIV>
<DIV> </DIV>
<DIV>Would temperatures rise if the inside of the refractory metal combustion
chamber was black and the outside shiny?</DIV>
<DIV> </DIV>
<DIV>Best,</DIV>
<DIV> </DIV>
<DIV>Dean</DIV></DIV>
<P>
<HR>
_______________________________________________<BR>Stoves mailing list<BR><BR>to
Send a Message to the list, use the email
address<BR>stoves@lists.bioenergylists.org<BR><BR>to UNSUBSCRIBE or Change your
List Settings use the web
page<BR>http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org<BR><BR>for
more Biomass Cooking Stoves, News and Information see our web
site:<BR>http://stoves.bioenergylists.org/<BR><BR></DIV></DIV></DIV></BODY></HTML>