Dear Paul Thanks for the reply. I continue with:
>1. One pull needs to serve both the primary and secondary air, and to separate the pull into two paths is difficult and interrelated (increase one will diminish the other). So far we are doing fine with several fuels. Just reporting.... >2. We need feet of chimney height to equal what a small fan can accomplish, and a blower gives even more power. Well, how much is actually needed? We need to break out the combustion analysers again and get the readings. How much is used v.s. actually needed. If the stove is venting into the room, there is no different to vent the chimney into the room. If it accomplishes the same thing, there is no problem. Just because it has a chimney does not mean it HAS to go outside. Just sayin'..... >3. In the context of sawdust or even rice husks, nobody has successfully pulled (via a chimney) the primary air through such fine materials, especially with small cookstove sizes that could finish cooking before a substantial chimney gets sufficiently hot to give a stable draft. Yeah, well, OK, but who said it has to be pulled through the fuel? There is more than one way to burn a pile of sawdust. So let's look broadly at how to burn fuel without pulling it through the whole volume of it. The fact that most of the designs rapidly copied from the Campstove says nothing about other designs that work differently. I am about to suggest to Rok and Richard that they make a no-hole briquette stove that uses counter-flow air like the Lion/Tau/Libhubesi stoves to avoid the erosion of walls problem common to stoves with all the air coming from one side. Still working on the briquette-tube wall gap. >4. (Opinion) Fans and blowers will enter the cookstove efforts in major ways in the coming few years. Chimneys will be favoured if they work as well and have no moving parts for the simple reason that you can't make your own fan. A lot of metal stoves are still made at home or by a neighbour. >We Stovers are just scratching the surface of applications of FA into cookstoves. And innovative uses for chimneys! >The topic of FA is integrated into the content of the BEF Gasifier Stove Camps ... Cool. May the fans fill your sails! Regards Crispin _______________________________________________ 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
