[Digestion] (no subject)

[Jaime Marti Herrero]

Hi everybody.
I just have upload a video to youtube about the construction of a biodigester for Altiplano region, Bolivia. This means 3500-4500 meter over the sea level, and minimum temperatures of -15Cº.
The video has been recorded during a workshop in a community. At the end of the video you can see the highest biodigester(4221 meter over sea level) operating.
The sound of the video is only music.
here you can see the video: http://es.youtube.com/watch?v=3Sl0XEN5Bgo
 
The difference of this biodigester is the retention time, and the greenhouse, made with sand walls of 40cm width. these walls keep warm the biodigester because the thermal mass.
 
Hope it is interesting for you.
Keep in contact
jaime
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