Dear List,
Thanks Jaime for the article. We will try this one out in Kenya. I am sure it
will work well.
For an update on our tests, we bought new cow dung without antibiotics and now
are producing 1.4 cubic meters per day of biogas from a 3.2 m3 reactor instead
of the 0.52 m3 per day that we used to produce. Also, the digester with
antibiotic cow dung is doing better now though I haven't tested the exact
amount of gas it is producing. I would guess that the antibiotics have degraded
over the last 3 weeks.
I have another question, it being Thanksgiving and all for us in the US. I have
managed to convert an LPG stove to biogas for the burners, but now I am trying
to convert the oven to biogas (from LPG) so that I can cook my turkey. The
flame keeps going out. I lights on one side of the oven burner and the flame
runs around the jets and goes out in a few seconds. (I used a 2.5mm jet for
this and not the 0.5mm jet that came with the stove). Then I taped over a few
of the jets and I taped over the air mixing hole near to the jet and the flame
was more stable but eventually goes out, but not stable like an LPG flame in an
oven. My gas pressure is around 3 kPa. Any advice? Has anyone successfully
converted an LPG oven to biogas before? What is the trick?
Thanks a bunch!
Kyle
Managing Director
Schutter Energy Ltd.
www.takamotobiogas.com
On Nov 21, 2012, at 5:40 PM, Jaime Marti Herrero wrote:
hi everybody
about solar passive heating we have published a paper about
it.http://www.sciencedirect.com/science/article/pii/S096085241201187X (i can
send you by mail, if you want)
the key looks to be to gain solar radiation throuhgt the top of the digester
(with greenhouse in very cold regions and black coating) and to insulate the
tank from the soil.
the difference between solar radiationgain+insulation and without that is (for
the same weather) 13ºC. we have digesters in both cases, and we are reaching
30ºC for the slurry when solar passive heating is applied, but only 17ºC of
slurry temperature when no solar gain or insulation is used.
keep in touch
jaime
-----
Jaime Martí Herrero
CIMNE (www.cimne.com). Building Energy and Environment Group
Cochabamba · Bolivia
Tel. (+591)-73 090 621
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