Kompetenzen | Competencies
Infrastruktur Infrastructure
Komponenten, Module Components, modules
Systeme Systems
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Wasserstoff Hydrogen
Systeme Systems
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Ausrüstung Equipment
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Stack-Komponenten Stack components
Demonstrationsprojekte Demonstration projects
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Stack Stack
Produktionstechnik, Teststände Production and test technology
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Peripherie Balance of plants
Dienstleistungen Services
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Spezielle Anwendungen Sonderfahrzeuge, USV ➤ Special applications Special purpose vehicles, UPS
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Stationär Stationary
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Hausenergie Home energy
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Stationär Stationary
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Industrie Industry
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Mobil Mobile
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Antrieb Drive train
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FuE R&D
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Beratung, Normung Consulting, standardization
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Aus-, Weiterbildung Education, training
DESCRIPTION OF FUEL CELL PRODUCTS
As Europe's leading provider of energy services, Dalkia has 54,800 employees in 38 countries fully focused on energy and environmental efficiency. Dalkia optimises the technical, financial and environmental performance of the energy systems it manages on the behalf of local authorities and businesses. From design and engineering to energy procurement, all of our services are performed with a focus on sustainable development. Our goal is to leverage local resources and minimise each facility's impact on the environment, while reducing both fossil fuel consumption and greenhouse gas emissions.
The required biogas for the fuel cell is produced by a biogas plant, that is operated by Dalkia in cooperation with Stadtwerke and local farming companies since 1998. Slurry and organic waste are used as input substrates. The existing gas engines at the biogas plant will be reduced in power to provide only the internal heat demand of the plant. Biogas plant and hybrid system will be connected by a 4 km biogas pipeline. The project receives government funds of the NIP (Nationales Innovationsprogramm Wasserstoff und Brennstoffzellentechnologie) program. Within the "NEEDS Light Tower Project" submitted by Dalkia and supported by the NOW (Nationale Organisation Wasserstoff- und Brennstoffzellentechnologie), the installation of up to 36 fuel cells is planned (Status: 2009). A hybrid system consisting of a stationary fuel cell and a gas engine will be installed. While the generated electricty will be fed to the public grid, the produced heat is used for the district heating net of the local utiliy provider Stadtwerke Barth GmbH. The fuel cell HotModule HM320 is a molten carbonate fuel cell (MCFC) manufactured by MTU Onsite Energy GmbH, Ottobrunn, Germany. According to the manufacturer's specifications, the fuel cell provides an electrical gross power of 345 kW (electrical gross efficiency 49 %) and a thermal power of 205 kW. The gas engine has an electrical power of 192 kW. To allow the use of biogas as fuel, the biogas will be cleaned with activated coal. The hybrid systems combines the advantages of fuel cells and gas engines for the use of biogas. The gas engine is able to modulate the power with the given, fluctuating biogas quality and quantity, while the fuel cell will provide the base load with a high electrical efficiency. The HM320 reforms methane internally to hydrogen required for the fuel cell process. For this reason, natural gas and biogas can be used as fuel without an additional external reformer. As carbon dioxide leads to a higher effectiveness of the fuel cell, the high carbon dioxide content of biogas has an positive effect on the system performance.
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