On Saturday 25 December 2010 20:43:14 Richard Stanley wrote: > er, what again, about side feeding... ???
As I said in my reply I don't know about this stove. For the general case I was waiting for some detail about briquettes from you. Consider that the 3 stone fire is a three legged side feeding stove with no air control other than that provided by the unconstrained natural convection around the fire and pot. Fuel control is by pushing sticks in. Excess air around the burning fuel quenches the reaction and this is where most blue smoke is generated. The rocket is then one leg of the three stone fire with some containment of the natural draught but as the fuel and air are fed concurrently through the same hole there is still quenching from excess air. A stove like the GTZ Crispin illustrated keeps the fuel feed separate from the air feed and probably controls the rate of production of offgas ( the bit that becomes the flame) by having a separate air supply to the bottom, to burn char and drive off offgases, from the secondary air which combines with the offgases to make the flame. Now with a holy briquette being a uniform cross section there is probably scope for using the hole as the primary air controll and having a separate secondary air supply but it will depend on the rate at which the briquettes burn . Also Ronald pointed out that in the case of tlud it's the uniform rate at which the pyrolysis front moves down that controls the power. Now there may be a compromise somewhere between the vertical, char making, model and the horizontal rocket model. So yes I think a top lit inclined side feeding briquette burner is feasible and if the client is willing to discard a high carbon ash then it should have low PMs. AJH _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address Stoves mailing list 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/ [email protected] http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
