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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear Roger<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>My First Rule is, “Never assume anything.”<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nearly everyone in Ulaanbaatar has electricity, enough to have a TV and lights. It is not that they have an electricity account, they ‘make a plan’ with neighbours. The same situation exists in South Africa with sometimes breathtaking results. See attached.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You can increase the draft by reducing the chimney diameter. The gas flow rate is then higher and there is less time to be taken out to heat the room. Using stainless steel sheet for the chimney will reduce losses as well. The new stove from SeTAR will take advantage of both: it has a 63.5mm diameter chimney made from SS.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Until you reach about 10 feet per second the draft loss to friction is not much. Most domestic stoves have chimneys that are far too large to work properly. If you have less gas at a higher speed in the pipe and on average it is hotter, you get more draft for the same heat loss.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Crispin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0mm 0mm 0mm'><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> stoves-bounces@lists.bioenergylists.org [mailto:stoves-bounces@lists.bioenergylists.org] <b>On Behalf Of </b>Fireside Hearth<br><b>Sent:</b> October-18-11 1:27 PM<br><b>To:</b> stoves@lists.bioenergylists.org<br><b>Subject:</b> Re: [Stoves] High mass space heating options Re: Rocket Stove for the PLACE<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Hello Steve, <br><br> In UlaanBataar Mongolia for one example there are times where electricity is not available, then you have the off gridder, and my total paranoia that even here at home we could be without power for long periods of time. One of our local power generating dams is horribly compromised structurally, should it go it would send millions of gallons of water rushing downhill toward Seattle taking out every power translator station in it's path. This could mean many months before power could be restored in many area's. This is why I wish to not rely on power at all if possible.<br> I have worked out my stove problem by two methods. One was to "wrap"my flue pipe raising it's internal temperature creating a better draw, the other was getting more activity from my secondary combustors which in turn accomplished both a better (cleaner) burn as well as providing a little more temperature in the flue.<o:p></o:p></span></p><div><div class=MsoNormal align=center style='text-align:center'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><hr size=2 width="100%" align=center id=stopSpelling></span></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Date: Tue, 18 Oct 2011 09:25:28 +0100<br>From: <a href="mailto:steve@thetaylorfamily.org.uk">steve@thetaylorfamily.org.uk</a><br>To: <a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a><br>Subject: Re: [Stoves] High mass space heating options Re: Rocket Stove for the PLACE<br><br><br><o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>On 17 October 2011 22:08, Fireside Hearth <<a href="mailto:firesidehearthvashon@hotmail.com">firesidehearthvashon@hotmail.com</a>> wrote:<o:p></o:p></span></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Hi Steve.....<br><br> I have tried that, and it does work......but........I'm trying desperately to stay away from all electric options. I did find this morning that my combustor pack was losing heat to it's outer shell and not developing the temps needed to stay clean and solved this issue which might also solve the other. What I am wondering is more along the line of chimney diameter vs temperature. Different diameters have different velocities which could result in different temp ranges. I am also putting a second section of pipe around the chimney on top of the roof to raise the temp and this seems to be helping.<o:p></o:p></span></p></div></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><br>Why? because you don't like using electricity, or you want the ability to run "off grid" ? <br><br>Steve <o:p></o:p></span></p></div></div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><br>_______________________________________________ Stoves mailing list to Send a Message to the list, use the email address <a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a> to UNSUBSCRIBE or Change your List Settings use the web page <a href="http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org</a> for more Biomass Cooking Stoves, News and Information see our web site: <a href="http://www.bioenergylists.org/">http://www.bioenergylists.org/</a><o:p></o:p></span></p></div></div></div></body></html>