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

[Kevin McLean]

Great information, Crispin.  How do most poor families in Tibet burn dung?

On Fri, Jan 6, 2023 at 12:44 PM Kevin McLean <kevin at sun24.org> wrote:

> Tom,
>
> I'll check with SNV.  Was this testing done in India?
>
> It's extremely interesting that 90% of the nutrients in dung are water
> soluble.  From what you and Richard say, it seems very possible that we can:
>
> 1.  Remove most of the nutrients from dung by soaking.
> 2.  After soaking, pour the solution through biochar to both filter the
> water and charge the biochar.
> 3.  Reuse the water after filtering.
> 4.  Make dung patties that burn hotter and cleaner.
>
>
> I just asked a colleague in Malawi to test this.  He has irrigation so he
> can immediately start testing biochar that will be charged this way.
>
> On Fri, Jan 6, 2023 at 11:00 AM <tmiles at trmiles.com> wrote:
>
>> SNV put a lot of effort into the development of dung stoves for high
>> altitudes several years ago.
>>
>>
>>
>> Leaching nutrients and minerals from dung prior to drying and burning
>> makes a lot of sense. The principle has been used at the farm and
>> industrial scale. Key nutrients are about 90% water soluble. The challenge
>> is often finding enough water.
>>
>>
>>
>> Tom
>>
>>
>>
>> *From:* Stoves <stoves-bounces at lists.bioenergylists.org> *On Behalf Of *K
>> McLean
>> *Sent:* Friday, January 6, 2023 6:05 AM
>> *To:* Discussion of biomass cooking stoves <
>> stoves at lists.bioenergylists.org>
>> *Subject:* Re: [Stoves] ***SPAM*** Dung Rocket Stove - Failed Test
>>
>>
>>
>> Richard,
>>
>>
>>
>> Can you please explain further?  I don't understand.  Do you have photos
>> or videos?
>>
>>
>>
>> On Fri, Jan 6, 2023, 9:00 AM Richard Stanley <rstanley at mind.net> wrote:
>>
>> Not true paul or only partially true! In rural kenya our partners francis
>> and mary kavita showed hor one sieves out the aromatics and dissolved
>> solids by sloshing the patties of dung in water— then has a good liquid
>> feetiliser as well as a spongy lignin which makes a great fuel whether
>> briquetted or not.  Same
>>
>>  I discovered that the same process applies to peat in Ireland.
>>
>> Its good by stink and smoke; hello to clean burn and liquid fertiliser.
>>
>> Richard Stanley
>>
>> www.legacyfound.org
>>
>>
>>
>> Sent from my iPhone
>>
>>
>> On Jan 6, 2023, at 4:28 AM, peetersfrans at telenet.be wrote:
>>
>> 
>>
>> Dear KEVIN
>>
>>
>>
>> I think we discsed 30 y ago about frensh frees …..but Canada was to cold
>> for patatos down 1,5 $ !
>>
>> I remember you wash  salt out of dunge  and looked for analytics for the
>> ash danger .
>>
>> As for dung cooking/baking ,it is done in Anatolia TURKEY.   No trees ,to
>> see. villages of mud and corn looks haver, no mais .
>>
>> The fireplace is chimney  fumehood  integrated about 3 meter high and
>> always a pasat wind avaiable .
>>
>> To replace it you need a suction stove , fan , jet  or and partial
>> wood/dung using in the 3th world only…
>>
>>
>>
>> Regards
>>
>> F.
>>
>>
>>
>>
>>
>>
>>
>> *Van:* Stoves <stoves-bounces at lists.bioenergylists.org> *Namens *Ronal
>> Larson
>> *Verzonden:* vrijdag 6 januari 2023 5:54
>> *Aan:* Kevin McLean <kevin at sun24.org>; Paul Olivier <
>> paul.olivier at esrla.com>; stoves at lists.bioenergylists.org
>> *Onderwerp:* Re: [Stoves] ***SPAM*** Dung Rocket Stove - Failed Test
>>
>>
>>
>> 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> 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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>>
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