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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">The most promising technologies in the USA are the pellet stoves/furnaces, and the Masonry heaters that are run once or twice a day at full power for a couple of hours. There are extremely clean.
I visited a factory I N Caroline that has a very clean burning cordwood stove but I don’t think they are as good as the other technologies.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">There is a very clean downdraft stove popular in Germany but it is not so clean at low power. The grate is too big to do that. The BLDD 5 and 6 from the SeTAR Centre in Johannesburg are very clean
with both prepared wood and sized coal. It has an unusual vortex-in-a-tube approach to combusting that burns cleanest at the lowest excess air level I have ever seen for small-scale solid fuel: 35%.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Crispin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">++++++</span></b><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Crispin: <br>
<br>
I have seen wood chippers and pulverizers in US. I know they take energy (diesel) and capital. But is it possible to a) produce a miniaturized pulverized injection combustion chamber with power controls and/or b) produce a miniaturized heat transfer and storage
device? <br>
<br>
Of course, the first runs would have to be with commercial cooking. And the heat transfer and storage medium is independent of the fuel for primary heat. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Nikhil in his own technofancies<o:p></o:p></p>
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