Thanks Tom.
>Good proposal. >A char making appliance is a gas making appliance that makes char as a byproduct. By this definition it converts 85%, or less, of the solid fuel to gas. The remainder is char and ash (15%). I want ot quibble slightly with the 15%. I am saying 15% of the original carbon so if it is in the form of char, I am not thinking it is 15% of the original whole dry fuel mass. This takes care of any implicit assumption that biomass has any particular carbon % or ash %. >.Since most biomass is 50% carbon that's 45-48% of the mass. 15% carbon would be about 7.5% of the biomass. Exactly. But for rice hull or switchgrass or palm fronds or coconut husks it is quite to be quite different. If the main purpose of make the char is either as a fuel or biochar, it is the carbon that can be used as a guide. I don't want to make a stove test a slave to a current interpretation of what constitutes 'biochar'. The biochar community is still in its Wild West phase. Regards Crispin
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