[Default] On Sun, 11 Nov 2012 20:01:02 -0600,Paul Anderson <[email protected]> wrote:
>Crispin and all, > >I think that the char being created in a TLUD is not hot enough to >cause the water gas reaction. I take this view too, and even if it were hot enough the endothermy of the reaction would limit it. If this phenomena is important to us, e.g we want to maximise char retention, then it's worth knowing the optimum fuel moisture content. Also I had found there was a limit to the size of particle that could be thoroughly charred. I found I could not successfully scale up a tlud device to chare 150mm cross section longs which I hade carefully dried. What I never got round to trying, as I lost the farm workshop due to redevelopment, was seeing if such logs would char if embedded in smaller material. I no longer have a useful tlud device that will consistently produce measurable results but it may be worth doing some runs with oven dried wood chips which have been then re wetted with the correct amount of water to give samples of 0-25%mc wwb and weigh the char produced when lit with the same amount of liquid fuel. I would especially like to see the results when fed with primary air maintained at a constant flow. 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/
