[Stoves] pellet gasifier

[M. Nurhuda]

Dear Paul,

I have seen the video you put in your dropbox. Nice stove.

Is there any difference in the design principle of your stove from that of
Prof. A. Belonio? Please check the picture of Belonio's pellet stove.

Regards
M. Nurhuda

> Some of you might be relieved to know that I do not focus only on policy
> issues.
>
> This is what this little pellet gasifier looks like:
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1571.JPG
>
> Today I ran this unit on pellets of diameter of 8 mm. Here I employed a
> fan
> of only half the air resistance as in the previous run. I filled the
> bottom
> half of the reactor with pellets, and the top half with loose rice hulls.
> The loose hulls make the pellets much easier to light, and they do a good
> job of filtering and cracking the gas. Without the rice hull biochar on
> top, I simply cannot get a predominantly blue flame from 8 mm pellets. I
> would have much preferred to have rice hull pellets of a 6 mm diameter.
> And
> once again the power of the fan could have been easily reduced by another
> 50% to only 0.2 InAq.
>
> In any case, this is what the unit looked like in operation:
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/MVI_1574.MOV
>
> Note that the flame is not entirely blue. What amazes me is the amount of
> heat this unit puts out. The biochar pellets that this unit produces are
> firm, hard and quite beautiful:
> https://dl.dropboxusercontent.com/u/22013094/150%20Gasifier/Short/Photos/IMG_1563.JPG
> When the unit is emptied of biochar, and the biochar pellets are dropped
> into water, a huge crackling sound is made. Loose rice hull biochar does
> not react in such a forceful manner when it is quenched.
>
> It will take a while before this unit could be brought to market. A lot
> more work is needed. I think that a pellet gasifier would be ideal in
> urban
> areas. Transporting and storing large bags of loose rice hulls in an urban
> setting is messy and impractical. Hopefully such a small gasifier (the
> reactor weighs but 1.2 kgs) would appeal to the more affluent in Vietnam.
>
> I hope you all are not fed up with such technical detail.
>
> Thanks.
> Paul
>
> -- Paul A. Olivier PhD
> 26/5 Phu Dong Thien Vuong
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
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