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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 Robert<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'>I am really happy to see you are using a free-standing brick chimney with the stove. I am interested in hearing how they are constructed (foundation? height? inside diameter?). If they are mud bricks, do they work and last OK?<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'>The video shows the common pot used in that region. There is a BIG fuel advantage for people using this type of pot. Make a neat cylinder of metal that is about 2 cm larger than the outside diameter of the pot. It should be about 2 cm taller than the pot. Knock the top 1 cm (or a little less, let’s say 5-8mm) of the top end bending it 90 degrees inwards to make a lip that still allows the pot to slide inside. Turn it upside down and hammer the lip gently onto a flat metal surface to make sure it is flat. Turn over again so the lip is on top.<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'>Instead of putting the pot directly on the stove plate, put on the cylinder first. Then drop the pot into it. It creates a skirt around the pot that only increases the heated surface. The sides will get heated a bit as well. The gas flow will sort out its own way out – up in some places and down in others, piping it back below the flat metal stove top.<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'>This cylinder increases the heat transfer efficiency quite a bit and may even slightly increase the combustion efficiency. That reason for the better burning is that the stove has too little vertical space for the flames to finish burning (there are flames touching the pot) so it gives a little more space to complete the burning (= more heat).<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'>That is the perfect stove and pot for the use of this type of sleeve. It can even be made from a larger pot that was damaged (usually a hole in the bottom). If you want a Cadillac version, make a lip at the top and bottom, taper it smaller to the top, and play with it until you find the perfect height!<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><div><div id="AOLMsgPart_1_bfe278a2-8f87-47f3-852e-88d03f823dee"><div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:#1F497D'>++++++<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>Dear Friends and Colleagues</span><span lang=EN-US style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></div></div><div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>It was great to meet you all at the Seattle conference of ETHOS.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>We just finished a 6 or 7 minute video about our Maasai project in Tanzania. I would love for you to take a look at it. It will download in about 2 minutes in this lower resolution version.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><div><p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'><a href="http://rcpt.yousendit.com/1037718917/3d6c38afc442d74cf251558c2443bf90" target="_blank">http://rcpt.yousendit.com/1037718917/3d6c38afc442d74cf251558c2443bf90</a> </span><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p></div></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>we also have launched our new website <a href="http://www.maasaistovessolar.org/">www.maasaistovessolar.org</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>the video will be available on this website soon.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>I would like to stay in touch, and hear any advice you might have concerning our sustaining this work. I hope you will see its warmth and integrity in the video. <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>thanks<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>bob<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>Robert V. Lange<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>President, tne ICSEE<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>Physics Professor Emeritus, Brandeis University<o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-family:"Arial","sans-serif";color:black'>508 735 9176<o:p></o:p></span></p></div></div></div></div></div></body></html>