Hi Lanny, I guess I should clarify that. I built a copy of Paul's Champion TLUD which uses a large six inch diameter metal coffee can for the burner. It has the primary air tube coming in through the side, and below the grate. Above the grate I needed more height, and found a six inch stove pipe with the factory installed crimps will fit into the top of the coffee can. I cut it with a chop saw, and usually make several at a time. The time consuming part of this is fitting the primary air tube into the coffee can, so to save the coffee can from burning out, I cut a 10 cm or 4 inch length of the six inch diameter stovepipe (with no crimps), and fit it inside the lower portion of the coffee can, and just above the grate. (I open this little piece up, and trim it so it fits inside the can with no overlap.) This part oxidizes because I sometimes run a small computer fan to increase the cooking time and it does turn the thing into a little forge. However, I can drop a few small cubes of wood into that glowing bed of charcoal and get some more flame (without smoke) to finish the cooking task. I might also mention that above the restriction, I use do use a 4" diameter juice can that is wrapped with ceramic wool insulation and covered with shiny aluminum foil. Looks Space Age! The outer lower container is a party balloon gas tank. I painted it with orange 500 degree F engine paint, but it has all burnt off. (This did not happen until I got carried away with the computer fan and 2 hour cooking sessions. (Normal TLUD operation without consuming the char is about 20 minutes, depending on the fuel.)
On Mon, Feb 11, 2013 at 5:28 PM, Lanny Henson <[email protected]> wrote: > Using inexpensive consumable components is certainly a strategy to consider > when designing a burner/stove. You are using a 10 cm/ 4" metal liner. That > is close to the sixe of a juice can. > Lanny >> I use a 10 cm (4") wide replaceable band of old stovepipe material >> inserted into the lower section of the stove. When it burns away, I >> just replace it with another one. (I have no other use for old >> stovepipe.) It also would help to reduce the amount of air coming >> from the primary fan to lessen the forge effect. However, as Paul >> stated, Ceramic or cast iron would be a better solution. -- Ray Menke _______________________________________________ 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/
