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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Dear Julien<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>That heater is approved for sale in South Africa, which means it passed SANS 1906 (which covers stoves, heaters and lanterns). There is one sub-sub-paragraph of the standard which is not compulsory (enforced), and it relates to that particular device. There was a disagreement over how to word the general requirement it must be impossible for a burner to be refuelled while the flame is present. It turned out to be very difficult to rule refilling out, while ruling that product’s combusting mechanism in. So that paragraph is in the Standard, but not compulsory, meaning it is specifically stated not to be.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>It is an interesting example of how Standards are written and enforced. The product meets the Japanese Standard for space heaters which have to be earthquake-proof.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>I see a message just came in from Prof Lloyd. We both worked on this Standard for several years. That explains why he knows quite well how it works.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'>Crispin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>Hello stovers;<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I took my Kero-Sun Radiant 10 apart. There are some photographs of the inner and outer chimneys in the attached pdf.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The inner chimney as baffles at the bottom and is enclosed, with perforations at the top.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>For sport, I put the inner chimney, and then the inner chimney nested in the outer chimney on top of a 7.5 cm diameter natural draft TLUD. As we might expect, it created resistance to exhaust gas flow, that reduced the secondary uptake, and caused the TLUD to emit a small amount of visible smoke. I did this in daylight, so I don't know if any of the chimney assembly became red hot.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>In order to investigate this properly, I would have to destroy the chimneys by breaking off the baffles, and expanding the diameter of the perforations in the chimney walls --- and I am not prepared to do that. What is needed is to find a kerosene heater wreckers yard to scavenge bits.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thus, it is still an open question (for me anyway) if something like the chimneys in kerosene heaters, or a type of catalytic converter, can reduce soot production from natural draft TLUDs.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Cheers,<o:p></o:p></p></div><div><p class=MsoNormal>Julien<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><br>-- <o:p></o:p></p></div><div><p class=MsoNormal>Julien Winter<br>Cobourg, ON, CANADA<o:p></o:p></p></div></div></div></body></html>