www.sistemabiobolsa.com Providing solutions for farms of 100 head (dairy) and 1000 head (swine). Currently in Latin America, but available for export to US.
Best, A On Tue, Jan 10, 2012 at 1:21 PM, <jonat...@bmpconsultants.com> wrote: > The issue here is that your looking for a commercially available system. > Smaller systems are not commercially manufactured due to business models > proving the larger capital returns from the larger systems. Their are many > individuals that are "the garage inventors" that have successfully put > together these smaller systems. Generally these systems have been created > using re-purposed material which has put the capital investment cost down > to near to nothing. My suggestion would be to get a small team of > these ingenious individuals together and create your own solution. Once > proven, simply market your solution as it appears to be an available niche > market. > > On Tue, Jan 10, 2012 at 11:46 AM, David <da...@h4c.org> wrote: > >> >> >> On 1/9/2012 8:34 PM, Gould, Charles wrote: >> >> Mr. Harris, >> >> I like your suggestion of smaller digesters. The problem is I have not >> been able to find a digester design robust enough yet cheap enough for a >> 100 cow dairy. Do you know where such a design exists? I have just about >> given up the notion that such a thing exists. >> >> >> This highlights a difficulty which may be partially fundamental (and to >> that degree absolute) but which seems largely conceptual, which is that >> because situations differ so much, and the need sufficiently moderate that >> there are few if any standard "replicable" designs for digesters, of the >> sort that would be used for, say, a large block of tract houses, where >> 1,000 houses might share four or five basic floor plans. And no doubt >> specifics in this area vary country-to-country... >> >> AgSTAR, of the US EPA, which could be said to be the primary >> government-based promoter of biogas in the US, is aimed strictly at >> manure-using digesters for farms with 500+ animals. For example, although >> it could hardly be said to be a digester at a modest scale (cost: $US10M+), >> the AgSTAR site deliberately (according to my conversation with a staffer) >> does not mention the Stahlbush Island Farms digester in Corvallis, OR, >> because it is fed plant matter exclusively-- therefore it is not a >> manure-based digester. >> >> It becomes a kind of self-fulfilling prophecy, because the system (in its >> academic support, among its industrial implementers and so on), becomes >> adapted to larger digesters, and therefore has that much more difficulty >> accommodating a different scale of thinking. But as well, it seems that the >> variability of energy prices in the US, where feed-in tariffs appear to be >> a political impossibility, has prevented the establishment of an industry >> that might work its way down to "smaller" digesters, after the larger >> digesters on the megafarms have been built, similar to what seems to be >> happening in Germany. >> >> I think there may well be a number of lower-cost building and process >> control technologies, perhaps along with energy crop co-digestion >> strategies, which could be put together in the proper circumstances to >> reduce the cost of digesters of a size below the AgSTAR limit in the US; >> but it would require a funder with vision to realize such an outcome. >> >> 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/ >> >> _______________________________________________ >> Digestion mailing list >> >> to Send a Message to the list, use the email address >> digest...@bioenergylists.org >> >> to UNSUBSCRIBE or Change your List Settings use the web page >> >> http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org >> >> for more information about digestion, see >> Beginner's Guide to Biogas >> http://www.adelaide.edu.au/biogas/ >> and the Biogas Wiki http://biogas.wikispaces.com/ >> >> >> > > _______________________________________________ > Digestion mailing list > > to Send a Message to the list, use the email address > digest...@bioenergylists.org > > to UNSUBSCRIBE or Change your List Settings use the web page > > http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org > > for more information about digestion, see > Beginner's Guide to Biogas > http://www.adelaide.edu.au/biogas/ > and the Biogas Wiki http://biogas.wikispaces.com/ > > > -- Alexander Eaton Sistema Biobolsa IRRI-Mexico RedBioLAC Mex cel: (55) 11522786 US cel: 970 275 4505 a...@irrimexico.org a...@sistemabiobolsa.com sistemabiobolsa.com www.irrimexico.org www.redbiolac.org
_______________________________________________ Digestion mailing list to Send a Message to the list, use the email address digest...@bioenergylists.org to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org for more information about digestion, see Beginner's Guide to Biogas http://www.adelaide.edu.au/biogas/ and the Biogas Wiki http://biogas.wikispaces.com/
