[Stoves] Pulumde

[ajheggie at gmail.com]

Forwarding a post that was too big for [stoves] with the pictures so
in this case we'll have to make do with the words until I figure
somewhere to upload the pictures.

Xavier you had also included a whole digest which added to the volume.

BTW good thin metal is often better than thick if one side is cooled.

AJH

On Sat, 14 Jul 2012 09:39:58 -0700, xvr.brandao at gmail.com wrote:

>Hey Crispin,
>
>Very sorry for missing your message, I was going through my old stovelists
>emails, and just saw that you wrote to me!!
>
>I am good, pretty busy with the work at Prakti and other stuff, there is a
>lot of good projects and ideas coming up at Prakti, we are living
>enthusiastic times!
>
>I saw the GIZ 'Pulumde' when I was in Benin, interesting design, looking
>sturdy like a Roumde and with a grate like a Pulumusa. I remember secondary
>air was exiting above the charcoal pile from a metal tube attached to the
>grate, but it wasn't working well, and I think it was taken out later on.
>The improved malgache I made wasn't really convincing in terms of
>performances. Something wrong with the air flow, I guess. Needed a lot of
>design work, way more than I could do with my small knowledge. Perhaps a
>two-stage door like you are proposing would improve the performances, yes.
>I think GIZ with the Pulumde and you with the improved malgache are on to
>something.
>
>A few pictures of the improved malgache are attached.
>
>Now my main concern was to make a heat-resistant combustion
>chamber/cone/grate? Either good and thick metal, either a ceramic one like
>the POCA you showed me.
>
>Cheers,
>
>Xavier