[Stoves] Fuels of the future

[Joshua Guinto]

Dear Crispin

I just realized now reading from your remarks... that what im doing is a
cross draft gasifier. Thanks for bringing that up.

The material from YDD will surely help. My crossdraft feeding of fuel on
the side port comes in contact with the hot charcoal bed. The fresh fuel
either comes on the side, or on the top of the hot char bed. But wood
sticks can be poked under the hot char bed and they give better results.

Im writing a narrative of the details of the anatomy of the stove as Dr.
Paul requested. Will post it as soon as i was able to get the size of the
document down to less than 1.5 MB.

Regards

Jed


*Joshua B. Guinto*Specialist, Appropriate Technology
MSc Management of AgroEcological Knowledge and Social Change (MAKS)
Wageningen University, The Netherlands 2006 to 2008
Recipient, International Fellowships Programme  Award (IFP) 2005
Ford Foundation


2015-09-08 8:59 GMT-07:00 Crispin Pemberton-Pigott <
crispinpigott at outlook.com>:

> Dear Jed
>
>
>
> A few years ago Prof Lodoysamba and I made a TLUD-ignited cross-draft
> stove that can be refuelled indefinitely. I feel this has a lot of
> potential to address the shortcomings of the TLUD – particularly keeping it
> going without sacrificing the emissions performance.
>
>
>
> I like the way you have done this one, and it should work just as well as
> a cross draft stove.
>
>
>
> The advantage of using a crossdraft is that it uses a volume of ‘coked’
> material as a breakdown zone for long chain polymers results in a very pure
> H2 CO and CO2 gas that burns in an adjacent chamber (above and to one side
> of the pyrolysis zone). I see no reason why this cannot be done using clay
> to make the stove body. If it is to be hopper –fed, the hopper has to be
> closed, but if fed more frequently, that should not be necessary.
>
>
>
> I have asked YDD if they have access to this material.
>
>
>
> Thanks for the report and photos.
>
> Crispin
>
>
>
>
>
> Dear Crispin, Paul and everyone
>
>
>
> Let me jump into the conversation.
>
>
>
> I am now in the midst of the gasifier stove i am fabricating and the
> abundant supply of pili shells. Pili *(canarium ovatum)* is an endemic
> species of my place here at the Bicol Region which is south of Manila. The
> shells  are very much heavier than macadamia nuts and has a density of 0.87
> grams/cm3. .
>
>
>
> Two days ago we began hauling 4 tons of the shells to become my stocks of
> fuel. I will sell the shells along with my PapaBrick Stove. And then, while
> we are hauling the shells, we were offered another 6 tons of shells from
> the neighbor farm, both in the same village. I used to purchase the shells
> from another village where to my best estimate, there is more than 10 tons
> per month that are very much underused. This supply is expected to increase
> as more farms have planted thousands of pili trees as the farmers got more
> awareness with the use of the shell for gasifier stoves.
>
>
>
> On the other hand, the PapaBrick Stove is giving us satisfying
> performance, now that we know better how to use it can perform as a TLUD
> gasifier stove during the cold start phase and then work as a rocket during
> the hot start phase in a continuous mode.
>
>
>
> One load receives 1.25 kg of the shells and runs for 75 minutes of very
> clean flame, boils 4 liter of water in 14 minutes during the cold start
> phase and then 9 minutes during the hot start phase.
>
>
>
> After the flame has gone out, we can harvest an average of 2.73 grams of
> char from the raw fuel of 1.25 kg or about 21 % recovery.
>
>
>
> Going further i fabricated a lantern on top of the stove. And it was very
> satisfying.
>
>
>
>
>
> Regards
>
>
>
> JEd
>
>
>
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