Hi Ron, Well, Baldwin has some pretty amazing graphs showing firepower/channel length and gap/thermal efficiency in his book starting on page 45:
http://www.newdawnengineering.com/website/library/Publications/Biomass%20Stoves,%20Engineering%20Design,%20Development%20and%20Dissemination,%20Samuel%20Baldwin%201987.pdf We have played around with a lot of stove top designs but keeping equal cross sectional area between stove top and pot is one place to start. Insulating everywhere in the stove helps a lot to increase temperature of gases hitting the pot. Best, Dean On Tue, Nov 13, 2012 at 12:18 PM, <[email protected]> wrote: > Dean cc list > > Thanks for bringing up this issue of optimizing the geometry between > the stove and the cookpot. Are you aware of anyone who has theoretically > and/or experimentally determined an optimum spacing? Presumably the > optimum is around 1 or 2 cm - and depends on the ratio of pot and flame > diameters? > > Same for optimum stove top shape. Presumably here we are returning to > the issue of radiative heat transfer - trying to avoid sending rays off > radially that you would prefer to hit the pot. > > You have done a nice job with convective skirts. Have you seen any > skirt that had an outer insulating layer? Any way to optimize the > geometry (separation distance from the pot, height, etc)? > > Ron > > >
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