[Stoves] Fwd: Fwd: Simple Modifications to Traditional Wood Cookstoves - Rocks and Clay Grates

[Rogerio carneiro de miranda]

Hi Crispin:

No, I do not have such controller.

The way on which the gas flows under the oven is by naturally  going
around the three sides of the oven (above, side and under) and until it
heats up the chimney.  However, by this way using firewood it can take
longer to heat up the chimney and cause some back up draft and leakages.

Therefore,  to avoid the problems above we strongly recommend to our
clients (as plan A) to first heat up the chimney by burning in a small can
a bit of alcohol gel or liquid, for about 10 minutes until the chimney is
warmed. Alcohol can make this job faster and cleaner, and after the chimney
is warmed, they can begin feed firewood into the rocket stove combustion
chamber.   It works very well.  Alcohol is plenty available here in the
markets and gas stations.

Plan B is to put alcohol gel into a small cup at base of the vertical
chimney (our chimneys comes with such accessory to easy chimney cleaning
and warm up), so to heat the chimney immediately.

Here is a short tutorial about such procedures
https://www.youtube.com/watch?v=7bQZkI2Zg6Y

Rogério



Em seg, 27 de mai de 2019 às 14:24, Crispin Pemberton-Pigott <
crispinpigott at outlook.com> escreveu:

> Dear Rogerio
>
>
>
> Do you have a movable gas path controller that forces hot gases under the
> oven when you want to bake?
>
>
>
> I like your mortaring.
>
>
>
> Thanks
>
> Crispin
>
>
>
>
>
>
>
> Hello Ron and stove colleagues:
>
>
>
> Indeed, very interesting what Kevin is doing with three stone fire to
> improve efficiency. Clever, and boy, it took more than 10k years to figure
> out such simple solution.......
>
>
>
> Regarding the rocket stoves, what I have done is what a call an extended
> rocket stove chamber.   Usually an stand alone rocket stove supports only
> one pot under its combustion chamber, but if you add a griddle on top of
> it, you can use two or even three pots by channeling the hot gases under
> the griddle, before going to a chimney.
>
>
>
> My extended rocket stove does support two pots under the same combustion
> chamber, which basically I make  a longer rocket stove ¨chimney¨, which
> does allow two pots above and on the same level. Of course, the fuel
> consumption is higher, 1.45 kg/hour in contrast with 0.9 kg/hour in a one
> pot stove.
>
>
>
> I made this extended rocket stove in order to power a four burners Premium
> Ecostove, which has an one meter long griddle (4 pots holes), a 45 liters
> oven, and a water coil heater.   Basically, I get direct flames under the
> first two holes from the extended rocket chamber, and also flames onto the
> third hole by the suction from the chimney draft.  On the fourth hole I
> usually get flames only when the stove is operating at full power.
>
>
>
> This new stove was developed in response to the Brazilian market, which
> liked the benefits of the rocket stove, but demanded a more powerful and
> useful stove.  Here a link for a photo of our Premium Ecostove
> https://ecofogao.com/wp-content/uploads/2018/08/WhatsApp-Image-2018-07-16-at-10.44.02.jpeg
> <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fecofogao.com%2Fwp-content%2Fuploads%2F2018%2F08%2FWhatsApp-Image-2018-07-16-at-10.44.02.jpeg&data=02%7C01%7C%7Cfd26c77f06d947fc06ba08d6e2c66df4%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636945739210128682&sdata=5eDGTiXBJQ4v8eBEG%2FRsfuj1mC3ExhKLQbWWp%2B1Kn%2BU%3D&reserved=0>
>
>
>
> Regards
>
>
>
> Rogério
>
>
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