Dear Andrew I an becoming convinced that the char disappears for other reasons as well. The heat needed to get rid of the moisture is far less than the charcoal. That leads me to think there is some reaction involving water that breaks the carbon out of the char.
Any ideas what that would be? Regards Crispin ------Original Message------ From: [email protected] Sender: Stoves To: Stoves ReplyTo: Stoves Subject: Re: [Stoves] Smoke-free biomass pellet fueled stove Sent: Nov 8, 2012 17:13 [Default] On Sun, 4 Nov 2012 11:54:00 -0800,"Tom Miles" <[email protected]> wrote: >I have often wondered how consistent the char is from a TLUD. While the >maximum heat treat temperature (HTT) is probably consistent, the time that >the char is exposed to these temperatures probably varies. Tom Reed used to say that "Denver dry" wood (10%mc wwb) yielded 25% char from a tlud burn and 25% none, so as the initial mc goes up the char becomes higher in ash and lower in charcoal. This is because the enthalpy of water vapour being produced has to be provided by heat from burning char. 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/ _______________________________________________ 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/
