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<p class="MsoNormal"><span style="color:windowtext;mso-fareast-language:EN-US">Dear Paul<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext;mso-fareast-language:EN-US">I am interested in this comment:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext;mso-fareast-language:EN-US">></span>And simply putting chimneys onto plancha stoves (rocket or otherwise) has not resolved the issues.
<br>
<br>
<span style="color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Which ‘issues’?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">In Kenya there was an effort on tea estates to add chimneys to space heating fires and they blocked completely in as little as two months due to the terrible combustion efficiency. They didn’t have ‘combustion
chambers’ in any real sense of the word. I describe such stoves as ‘a box with a chimney’, borrowed from John Davies in Secunda.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">A chulha with a chimney is hardly a decent solution. What is odd however is that this approach is not sought first, foremost and consistently.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">It smacks of incompetence or ‘an agenda’ where there shouldn’t be one. Dung is a very good, clean-burning fuel when it is in the right combustion environment. This is hardly a mystery or trade secret. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext">Crispin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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