[Stoves] SPAM Re: SPAM Re: SPAM Re: Stoves Digest, Vol 149, Issue 10

Tue Jan 17 13:39:36 CST 2023

Dear Kevin

That would cook so-o-o much better if you surrounded the fire with bricks.  You could leave access on one side, but I think a spare piece of sheet metal leaning against the hole to close off all air would do just as well.

There is going to be a lot of air leaking between the bricks so try surrounding the whole fire.  Maybe it would take 7 stacks of 4.

Those bricks were probably moulded using a wooden frame with 6 of so formed at a time.  That same principle can be used to make a wooden frame with slots.  Fill the whole thing at once, and tip them out to dry.  Same as with bricks.   The technique is called "slop-moulding".   You make it wet enough to flow reasonably when pushed, throw in a load, push down a bit to fill the cavities, then strike it off with a flat stick.  Tip out the set of 6 or 8 "sticks" which may require the mould cavities to be tapered 10 degrees or so, because it is sticky.

After some time in the sun they will be dry enough to stack criss-crossed for a long drying period like a week or a month. Being very dry is important.

Good luck
Crispin

From: Stoves <stoves-bounces at lists.bioenergylists.org> On Behalf Of Kevin McLean
Sent: Tuesday, January 17, 2023 8:21
To: Discussion of biomass cooking stoves <stoves at lists.bioenergylists.org>
Subject: [Stoves] ***SPAM*** Re: ***SPAM*** Re: ***SPAM*** Re: Stoves Digest, Vol 149, Issue 10

Dung has better uses than cooking fuel.  (Some of the nutrients for fertilizing can be extracted by washing.)  But hundreds of millions will be using dung as a cooking fuel for decades. Let's improve it.

We've also been testing dung sticks upright in a metal band.  Preliminary results indicate they burn much hotter and cleaner than dung patties.  Here is a video<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1zlTqdTdTBOTlRUt55mPDlonCEvRzfdrL%2Fview%3Fusp%3Dshare_link&data=05%7C01%7C%7C056d1b9135d7493d002b08daf89f67c8%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638095660822530235%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=8IHK%2BwdkrtcM0v%2Fx5bfrCIK%2FzW7Hw0v8MHqzvCUuTsc%3D&reserved=0>.  But this really needs to be tested in India by someone who cooks with dung patties.

Kevin
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