Type of CHP system: Anaerobic digestion

Plant owner: Sole owner of the biogas plant is Klaus Uidl.

Legal form: limited company

Commissioned: 2002

Status of plant: Commercial

Contractor details: CHP: Jenbacher JMC 208, 330 kW, net efficiency: 37,9%; generator, Stanford 450 kVa, biogas SO2 removal by means of an air compressor

Power generation: Gas engine

At the end of this year enlargement to an installed capacity of 500 kW.

Main fuel: Biogas

Pig manure (2000 m3/a),  and maize silage (6000 t/a, 39 – 40 % dry matter) are the main fuels used in the plant. Trials with green waste (10% of total input) were executed. Problems occured as fiber was to coarse. One problem is that harvesting costs are relatively high.

Nominal capacities & efficiencies:

Gross electrical output: 0,33 MWe

Net electrical output: 0,2 MWe

Heat output: 0,56 MJ/s

Electrical efficiency, gross: 37,9 %

Overall efficiency, gross: 87,9 %

Power to heat ratio: 6

How is plant controlled: The plant is controlled by the amount of biogas produced.

Heat usage: Heating only

Energy usage:

The annual electricity production amounts to 2,500 MWh to 100%  fed into the grid.  The annual heat production amounts to 4,200 MW of which 1/3 is for own use (farm house, farm etc.),  the other 2/3 are used  by a chicken farm nearby.

Fuel storage: The fuel storage has a size of 20000 m3 (storage capacity of one year)

Plant description:

The biogas plant is owned by a farmer.  One reason for the set up of this plant was an orientation towards a new activity yield for the farmer (pig framer), the establishment of a new main pillar, diversification of the use of crops.

Type of system: continuous fermenter

Authorisation: eco-electricity act 2002

Digester capacity: 5190

Residence time: 173

Process temperature: mesophilic process, temperature: 38 – 40 °C

Annual gas production: 1,445,000

Gas quality: 52 – 53% methan, heating value: 5 kWh/m3

wet fermentation, dry matter 15%, one-level process

Electricity sale info: The feed in rate in Austria is regulated by law and depends on the type of biomass used and on the size of the plant.

Data collected and quality assured by: Austrian Energy Agency.

Contact person: Elvira Lutter