Hi,
It has taken some time for me to post this, but here is the Royal Agricultural Society of England's (RASE) report on small scale UK on-farm digesters that we talked about earlier this year. There is a long version which contains all the case studies ( http://www.rase.org.uk/what-we-do/core-purpose-agricultural-work/AD-Full-Report.pdf ) and a shorter version which talks about barriers and benefits ( http://www.rase.org.uk/what-we-do/core-purpose-agricultural-work/AD-Short-Report.pdf ) Several of the AD systems proved particularly interesting. One was a self-built system which topped up the digester heat using thermal solar. The farm was a virtual showpiece for renewable energy, having solar PV, ground source heat pump, a wind turbine, thermal solar and a digester! (Case study 10.4) A second, which had been running for more than two years, had automated de-gritting, so that cows could be bedded on sand or ash. It used a very low parasitic load on the mixing (typically about 1W/m3) and had an elevated belt press separator. (Case study 10.5) A third had a three-tank system which produced wonderful digestate and did gas scrubbing in a covered post-store. (Case study 10.9) I hope those of you who were interested in the report enjoy reading it as much as I enjoyed talking to the farmers and putting it together! Kind regards, Angie Bywater
_______________________________________________ Digestion mailing list to Send a Message to the list, use the email address [email protected] 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/
