Dear Paul A
Open fires can make and use char. This is not something new or unusual. What is unusual is a stove that makes a lot of char that cannot burn it. It is unusual enough that is has the like of me and Jim scrambling around to find ways to properly report their performance. >2. There are several documents about the TChar concept and implementation. see www.drtlud.com/tag/TChar <http://www.drtlud.com/tag/TChar> As mentioned long ago, a Vesto will also make and burn char and change from one mode to another automatically using a paper wafer. The Anglo Supra Nova (which is a new stove) can also do it with pellets (didn't try wood chips). All it takes is air control and a combustion chamber that is relatively tall compared with the diameter. Regards Crispin
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