Hi All,
If we were to inject a spray of moisture in (or after) the pri would that result be the same? Are we sure it's the moisture IN the wood? For example depending on the experiment and how the moisture was adjusted it may be the water on the outside. Just making sure. : ) Perhaps due to slowing down the pyrolysis or formation of particles. Frank From: Stoves [mailto:[email protected]] On Behalf Of Dean Still Sent: Wednesday, June 12, 2013 12:43 PM To: Discussion of biomass cooking stoves Subject: Re: [Stoves] Burning wet wood Hi All, I find that pellets burn cleaner in TLUDs when at about 10% to 15% moisture content like sticks of wood. In both cases a slower burn helps to meter the fuel. Best, Dean On Wed, Jun 12, 2013 at 12:22 PM, <[email protected]> wrote: Crispin, list etal This below may be true for "burning", but it has not been my experience for pyrolysis. Colorado is pretty dry and I never experienced a smoke problem due to dryness. I hope someone with a TLUD will "bake" some wood or pellets for awhile and report their results. If a fuel dryness problem exists for TLUDs, it is not clear why that should be so. During pyrolysis a lot of water is created through numerous chemical reactions. Yes problems for wet wood with TLUDs. Explicit detail is somewhere in this list's archives. Andrew H is expert on fuel wetness. Ron _____ From: "Crispin Pemberton-Pigott" <[email protected]> To: "Discussion of biomass cooking stoves" <[email protected]> Sent: Wednesday, June 12, 2013 1:11:31 PM Subject: Re: [Stoves] Burning wet wood Dear Frank Burning very dry wood is difficult and it makes a lot of smoke. That is why stoves should not be evaluated with very dry wood when they are designed to burn 'ordinary wood'. If you get the conditions right for the early fire they are double-guaranteed o be wrong for the late fire. Much better a continuous input of damp material. Regards Crispin ++++++ Dear Crispin, Tom and all, I would think a batch mode would be better. A continuous mode means you have water vapor all the time. In batch mode one would heat and find the gas temperature goes to 100c. Then when the water is finally burned off the temperature rises and you can then push the fuel forward to do what you want to do with the now dry wood. Not sure this happens and have not seen a graph of this but think this is what would happen. Frank _______________________________________________ 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://stoves.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://stoves.bioenergylists.org/
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