[Digestion] Biogas appliances survey

[David]

Oliver,

My apologies for not earlier answering your message to me. I was 
traveling...


On 3/14/2011 7:28 AM, Oliver Kynaston wrote:
> I am working in Tanzania and am in the middle of conducting some 
> research into biogas appliances. I'm trying to get a list together 
> of the types of appliances (stoves, lamps, rice cookers, heaters 
> etc) which are being used by biogas programs around the world to 
> find out which would be most suitable for the biogas market here.

I know of only a few tests of appliances that have been done (see for 
example this paper 
<http://www.google.com/url?sa=t&source=web&cd=1&ved=0CCoQFjAA&url=http%3A%2F%2Fwww.snvworld.org%2Fen%2FDocuments%2FEfficiency_measurement_of_biogas_kerosene_and_LPG_stoves_Nepal_2001.pdf&rct=j&q=Efficiency%20Measurement%20of%20Biogas%2C%20Kerosene%20and%20LPG%20Stoves&ei=8xKFTeraMofQsAOayoT1AQ&usg=AFQjCNESBJ21QFSy8jgJyossj3YZxXLbig&cad=rja>), 
and in any case the question you have is difficult to answer (or 
perhaps only as I see it) in the form posed, because the criteria by 
which one determines suitability are not specified. Easily 
manufactured? Long-lasting? Efficient in its use of fuel? Cheap?

Briefly, I suggest looking at an EWAG paper 
<http://www.eawag.ch/forschung/sandec/publikationen/swm/dl/anaerobic_digestion_canteen_waste.pdf> 
on page 53 for some appliances that are (apparently) available from 
Tanzania.

Finally, at least with regard to stoves, clearly the primary appliance 
in most instances as regards biogas, and particularly if you are 
considering manufacture, I suggest contacting my friend Crispin 
Pemberton-Piggott (crispinpigott at gmail.com) <crispinpigott at gmail.com>, 
who is a recognized expert in stove design.


d.
-- 
David William House
"The Complete Biogas Handbook" |www.completebiogas.com|
/Vahid Biogas/, an alternative energy consultancy |www.vahidbiogas.com

|
"Make no search for water.       But find thirst,
And water from the very ground will burst."
(Rumi, a Persian mystic poet, quoted in /Delight of Hearts/, p. 77)

http://bahai.us/
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