[Default] On Mon, 26 Aug 2013 08:05:19 -0400,Jock Gill <[email protected]> wrote:
>Is there any thought on the minimum temperature required for a stove to be >satisfactory? It would seem that the cooler the combustion temperatures the >longer the metal parts will last. So what is the goldilocks temperature >range: not too cold and not too hot? As I said I think it is below red heat, with a thin metal stove this can be hotter than expected if the outer wall is cooled by ambient air, often the heat can be recycled into the combustion air rather than lost from the stove. > >My experience suggests that even simple tin can stoves will last a long time >if the temperature range is around 700 degrees C. I have made VERY high temp >ND TLUDs which showed serious metal wear and tear after every run. The outer >sides of the cans would shed thin layers of metal dust that was much like >rust. At too cool temperatures, there is creosote buildup. I control >temperature by limiting primary air and balancing out the draft in the system. Yes this is one of the lesser talked about attributes of TLUD as long as the pyrolysis is stopped before the front reaches the air inlet. At that stage the char starts burning and there is a transition from the ~600C of the pyrolysis front to what becomes an natural up draught gasifier producing CO. The char can reach 2000C if blown. 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://stoves.bioenergylists.org/
