On Thu, 16 Feb 2012 22:59:37 -0500, Crispin Pemberton-Pigott wrote: >BTW that is a remarkably high MC for spruce. Wow. We never see that. Is it >from a swamp??
Taking figures from "the forest mensuration handbook" of about 1975 vintage grand fir at 200%mc dwb is the highest and by my calculation that's only 30% dry matter on a wwb. Sitka is 164% and Norway spruce 183%. Poplar figure is from memory when we tested our commercial dryer. Figures for fresh whole tree chips are worse in evergreens because the needles have a higher mc. We often have trouble meeting the 45% mc wwb requirement for whole tree pine chips delivered to a power station. I have a woodchip stoker designed to run on joinery waste and that's nigh on impossible to get hot enough to burn fresh woodchip cleanly, I'm working on that. AJH _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/
