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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0><tr><td nowrap valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><b>Subject: </b><b><span style='font-size:12.0pt;color:black'><o:p></o:p></span></b></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal>Re: [Stoves] Heat / cook stove - proposed design<span style='font-size:12.0pt;color:black'><o:p></o:p></span></p></td></tr><tr><td nowrap valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><b>Date: </b><b><span style='font-size:12.0pt;color:black'><o:p></o:p></span></b></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal>Fri, 25 Nov 2011 02:52:47 +0000<span style='font-size:12.0pt;color:black'><o:p></o:p></span></p></td></tr><tr><td nowrap valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><b>From: </b><b><span style='font-size:12.0pt;color:black'><o:p></o:p></span></b></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal><span lang=ES>Darren </span><a href="mailto:mail@vegburner.co.uk"><span lang=ES><mail@vegburner.co.uk></span></a><span lang=ES style='font-size:12.0pt;color:black'><o:p></o:p></span></p></td></tr><tr><td nowrap valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><b>To: </b><b><span style='font-size:12.0pt;color:black'><o:p></o:p></span></b></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal>Discussion of biomass cooking stoves <a href="mailto:stoves@lists.bioenergylists.org"><stoves@lists.bioenergylists.org></a><span style='font-size:12.0pt;color:black'><o:p></o:p></span></p></td></tr></table><p class=MsoNormal><br><br>Getting close to completing this stove now.<br><br>Some photos are attached.<br><br>I've also attached a drawing of how things stand now (not to scale)<br><br>The door and hatch are made and have fire rope seals. These will be fitted once everything else is together.<br><br>I've used a cast iron grate from an old coal stove that was the perfect size.<br><br>A couple of things I'm wondering<br><br>*At the moment all the secondary air is going in through some square section pipe with an internal diameter of 20x20mm that enters at the rear of the combustion chamber above the ceramic blocks. (shown as blue square in stove2-7.jpg). Is this going to supply enough air or should I put a similar sized secondary air inlet on the front of the stove also?<br><br>*Crispins GIZ design has an area where the combustion chamber tapers wider (an expansion chamber?). I've drawn this in green in stove2-7.jpg . How important is this? I could make these sloping walls from sheet steel or I guess buy some refractory material sheets (my x partner who is making this with me had some jewellers heat mats that would appear suitable although she appeared reluctant to give them up) Is this a crucial detail? What effect does it have on combustion? what would happen if I leave them out?<br><br>Thanks in advance for any pointers. Hopefully I should finish and test fire it in the coming week.<br><br>Best<br><br>Darren<br><br><br><br><br><br>On 06/11/2011 22:33, Darren Hill wrote: <o:p></o:p></p><p class=MsoNormal>Hello Everyone, <br><br>After this project going well onto the back burner as it warmed up here, the temperature we are seeing at night now is focusing my attention again. <br><br>If anyone is interested discussion about this started 29th December and went on until 23rd February. The stove is about half built- I'm going to be working on it again on Tuesday. <br><br>I've attached a diagram of how I'm now planning to build the grate and throat area. (I took the liberty of modifying the GIZ diagram Crispin kindly sent to explain an appropriate layout) <br><br>As I'm only going to be burning wood and in my experience of wood stoves all the wood burns to a light ash which would easily fall through the grate I am planning to have a stationary grate. Am I making the wrong decision here? <br><br>I'd welcome anybodies thoughts on things as they stand. <br><br>Hoping to get it finished soon. Considering the number of people I've been describing it to all year it would be good to also let them know how it works!!! I've never seen anything like this in action - I'm thoroughly intrigued. <br><br>Best regards <br><br>Darren <br><br><o:p></o:p></p><table class=MsoTableGrid border=0 cellspacing=0 cellpadding=0 width=961 style='width:480.3pt;border-collapse:collapse;border:none'><tr><td valign=top style='padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal align=center style='text-align:center'><img border=0 width=338 height=450 id="Picture_x0020_1" src="cid:image011.jpg@01CCAB70.97D02830"><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'>front_off<o:p></o:p></p></td><td width=600 valign=top style='width:300.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal align=center style='text-align:center'><img border=0 width=450 height=338 id="Picture_x0020_2" src="cid:image012.jpg@01CCAB70.97D02830"><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'>Hopper_and_throat<o:p></o:p></p></td></tr></table><p class=MsoNormal><o:p> </o:p></p><table class=MsoTableGrid border=0 cellspacing=0 cellpadding=0 width=1072 style='width:535.8pt;border-collapse:collapse;border:none'><tr><td valign=top style='padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal align=center style='text-align:center'><img border=0 width=450 height=338 id="Picture_x0020_3" src="cid:image013.jpg@01CCAB70.97D02830"><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'>Secondary_air_in<o:p></o:p></p></td><td width=600 valign=top style='width:300.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal align=center style='text-align:center'><img border=0 width=450 height=375 id="Picture_x0020_4" src="cid:image014.jpg@01CCAB70.97D02830"><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'>stove2-7<o:p></o:p></p></td></tr></table><p class=MsoNormal><o:p> </o:p></p><table class=MsoTableGrid border=0 cellspacing=0 cellpadding=0 style='border-collapse:collapse;border:none'><tr><td width=600 valign=top style='width:300.0pt;padding:0in 5.4pt 0in 5.4pt'><p class=MsoNormal align=center style='text-align:center'><img border=0 width=450 height=338 id="Picture_x0020_5" src="cid:image015.jpg@01CCAB70.97D02830"><o:p></o:p></p><p class=MsoNormal align=center style='text-align:center'>Up_thru_grate<o:p></o:p></p></td></tr></table><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Re sent for Darren Hill<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>T.R. Miles, Technical Consultants, Inc.<o:p></o:p></p><p class=MsoNormal>Portland, OR<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>