[Stoves] ***SPAM*** Dung Rocket Stove - Failed Test

[Ronal Larson]

Kevin,  Paul and stoves list

	1.  What is the reason for this test of a rocket - instead of a TLUD or other char-making design?

	2.  I agree with Paul, but I can conceive of cost, time spent,  and CDR advantages of charring dung, at lest with certain family situations.   But I can’t see those advantages with combusting dung.

Ron

> On Jan 5, 2023, at 9:57 AM, Paul Olivier <paul.olivier at esrla.com> wrote:
> 
> Dung is not a good fuel.
> It is much better to ferment it and use it as a feed.
> 
> On Thu, Jan 5, 2023 at 10:12 PM Kevin McLean <kevin at sun24.org <mailto:kevin at sun24.org>> wrote:
> List,
> 
> Today we tested a dung rocket stove.  I'm a little surprised that the test was a failure.  Can anyone suggest changes?  And can anyone in India help us with our testing of dung as fuel?
> 
> This is very similar to a sawdust cookstove.  We made cylinders of dung with vertical holes in the center and let them dry for a month.  We did not mix anything into the dung.  We used 5 liter paint cans to form the cylinders.
> 
> <Dung rocket stove - wet.jpeg>
> <Dung cylinder - Failed test.jpeg>
> 
> We tested with and without a metal can over the dung cylinder.  We raised the cylinder and lit a wood fire under it.  The fire was never strong and there was a lot of smoke.  Here is a video <https://drive.google.com/file/d/1xCrABfFFOVlvtGn925VW8FT9lXl660Zk/view?usp=share_link> of the test with a metal can over the dung cylinder.
> 
> We seem to be having early success with upright dung sticks in a metal band and top lighting piles of dung patties.  But these need to be tested by people more familiar with using dung as fuel.
> 
> <Dung sticks in a metal band.jpeg>
> <TDB of pile of dung patties.jpeg>
> 
> We could use some help from someone in an area where dung is used for cooking.  None of my colleagues live in such an area.
> 
> Thanks, 
> Kevin
> 
> Kevin McLean, President
> Sun24.org
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> -- 
> Paul A. Olivier PhD
> 104/43 Phu Dong Thien Vuong
> Dalat
> Vietnam
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