Browsing by Person "Grundmann, Philipp"

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Assessment of the Cost-Reduction Potential of Different Technology Improvements for a Competitive Biogas Production
(2003) Grundmann, Philipp
A substantial reduction of biogas production costs is necessary to reach cost-competitiveness of electricity produced from biogas using energy crops. Cost reduction opportunities are identified for several technologi- cal parameters within a sensitivity analysis. The analysed parameters are then evaluated based on theoretically achievable cost reductions. Results show that even under favourable operational, economic and political conditions, the achievement of competitive cost targets for electricity production from biogas using energy crops depends on the development of highly cost efficient methods and concepts, that substantially reduce production costs and increase market shares.
Ökonomische Bewertung von Ansätzen zur Verbesserung der Wettbewerbsfähigkeit von Biogas
(2003) Grundmann, Philipp
Zur Verbesserung der Wirtschaftlichkeit und Wettbewerbsfähigkeit der Erzeugung von Strom aus Biogas ist eine Reduzierung der Produktionskosten erforderlich. Ansätze zur Reduzierung der Stromgestehungskosten werden identifiziert und hinsichtlich ihres Kosteneinsparungspotenzials evaluiert. Anhand der Ergebnisse wird deutlich, dass auch unter günstigen einzelbetrieblichen, ökonomischen und politischen Rahmenbedingungen eine wettbewerbsfähige Biogaswirtschaft in Zukunft nur durch die Entwicklung von kosteneffizienten Methoden und Konzepten zur er-reichen ist, die möglichst zu einer Halbierung der derzeitigen Stromgestehungskosten und zu einer deutlichen Steigerung des Marktvolumens von Biogas führen.
Tube Ensiling of Hemp - Initial Practical Experience
(2007) Pecenka, Ralf; Idler, Christine; Grundmann, Philipp; Fürll, Christian; Gusovius, Hans-Jörg
The conventional production of natural fibres from e.g. hemp or flax is based on field drying and retting of fibre straw. Since at the usual harvest time in September, weather conditions are often problematical for harvesting and retting hemp, a weather-independent post-harvest technique was studied. The harvesting of hemp by means of a chopper followed by anaerobic storage is favourable for the farmer because the weather risk can be avoided. Additional steps are the same as those for ensiling of fod- der. As a further advantage of this novel processing tech- nology, the whole plant material will be processed to form final products such as insulation materials and fibre boards, or semi-finished products for injection moulding. At present, a pilot plant with a processing capacity of 1 t per hour hemp silage is being built up and tested. The in- vestigations regarding storage costs and appropriate stor- age technology have shown that both stack silos and film silos are capable of preserving the raw material for more than one year. Initial results of the preservation of hemp in film tubes are presented.