The Penn State 100-cow capacity diegester system - 100 m3 (Upright Silo), heated (35 Cel), continuous feed (1-2 times daily), gas agitation (continuously) - operated dependably on a continuous basis for periods as long as 9 months. Alternative systems for handling high solidscontent input (up to 15 % TS) wered tested. Daily feedings of dairy manure slurries (8-15 % TS) at rates of 345 to 1030 kg VS resulted in total biogas production rates of 70 to 200 m3/day, respectively. Increased loading rates, and related reduction in retention time to as low as 1 days, increased the energy recovery ratio (m3 biogas/m3 digester voluem) to 2.02. Daily energy production was as high as 35,000 kJ/cow. Part of the biogas produced was used satisfactorily as fuel for a hot water boiler to heat incoming slurry and offset the digester heat losses. Tests of biogas as fuel for a water heater and for internal combustion engines showed combustion efficiencies comparable to other fuels on the basis of its energy content. (Wassmann)
Energy production potential of a 100 m3 biogas generator
Energieerzeugungspotential eines 100 m<sup>3</sup> Biogaserzeugers
Agricultural energy. ; 2 ; 373-378
1981
6 Seiten, 4 Bilder, 6 Tabellen, 6 Quellen
Conference paper
English
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