Greetings, Have a few minutes, and will continue:
I have a book from the 1920's which gives the detail of "flameless combustion" in immersed boiler tubes. Each tube has a burner jet giving gas and air in stoichiometric ratio into the tube. The tube is filled with ceramic stones ( maybe pumice ? ) According to the account the stones glow red hot, and the combustion is 100% complete. The original account of the wire mesh dome, brought this account to mind, thinking that the same conditions have been met, and that the heat source is concentrated below the pot, with very close to complete combustion. If this is true ? Then it is easy to understand why the water boiled in half the time. I have often wondered how the ceramic pebble bed could be incorporated into a stove. As the ceramic is in pieces,( including the brick arch ) cracking should not be a problem. The dome shape would enable a perforated brick arch construction, supported from the sides, where the heat would not be burning metal. A layer of ceramic pebbles above the arch would complete the buff body effect, and the heat can be concentrated in the centre away from the removable Metal tube holding it all together. Will try it one day when time permits. Regards, John From: [email protected] [mailto:[email protected]] On Behalf Of Paul Olivier Sent: 07 March 2012 06:40 AM To: Discussion of biomass cooking stoves Subject: Re: [Stoves] Radiant Dome Yes, I am now making a ceramic dome. Paul On Wed, Mar 7, 2012 at 11:36 AM, John Davies <[email protected]> wrote: Greetings, Has anyone thought of replacing the metal mesh dome with one of ceramic ? or better even a bed of ceramic stones. I will write in detail when I have more time. Regards, John Davies.
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