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Bio-HyPP - Biogas-fired Combined Hybrid Heat and Power Plant WHY is Bio-HyPP unique ? The Bio-HyPP power plant is a combined heat and power (CHP) system using biogas. The Bio-HyPP concept is based on a hybrid power plant - a combination of solid oxide fuel cells (SOFC) and a micro gas turbine (MGT). The project aims at developing a full-scale technology demonstrator with an electric power output of 30 kW. The Bio-HyPP project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No 641073 WHAT is Bio-HyPP The technology has the potential to achieve the highest electric efficiency while achieving high load and fuel flexibility at lowest emissions. Context and Future Challenges Melanie Herbst Deutsches Zentrum für Luft-und Raumfahrt e.V. (DLR) Pfaffenwaldring 38-40 70569 Stuttgart, Germany www.dlr.de Start date: 1st June 2015 End date: 31st May 2019 Project Coordinator Project Partners www.bio-hypp.eu [email protected] Project Information Electrical efficiency of the SOFC/MGT hybrid power plant concept compared to other power plant concepts Air Biogas Heat Micro Gas Turbine Solid Oxide Fuel Cells Hybrid Power Plant Heat Power System Integration and Demonstration Fuel Flexible Combustion System Efficient Turbochargers for Wide Operation Range Cost Effective High Temperature Recuperator Emergency and Instability Avoidance Power Conversion Optimisation Thermodynamic Performance Modelling Market Analysis and Economic Feasibility Pressurized SOFC-System Characterisation Fuel Cell Degradation Life Cycle Assessment and Life Cycle Cost • High primary energy consumption • Waste of thermal energy on biogas production sites • High amount of volatile renewable energy sources • Wide range of biogas compositions & quality • Progressing climate change • Air pollution caused by power production • Electrical efficiency > 60% • Total efficiency > 90% • Power to heat ratio > 2 • Primary energy savings > 50 % Today’s Situation CHP Challenges Bio-Hypp Objectives Scientific Tasks • Operational flexibility (25% to 100% el. power) • Fuel flexibility: all types of biogas & natural gas • CO 2 neutral • Low emissions: NO x < 10 ppm CO < 20 ppm UHC < 1 ppm • Reduction of the CO 2 footprint • Reduction of harmful emissions • Increase of operational flexibility (load & fuel) • Energy production driven by demand of electricity • Increase of electric efficiency • Increase of ratio between electrical power and heat efficient flexible clean HOW does it work ? Block diagram of the Hybrid Power Plant concept • The MGT compressor (1) pressurizes the air. • The pressurized air is then preheated by the MGT exhaust gas in the recuperator (2). • The pressurized and preheated air is used for thermal management and air supply of the SOFC (3). • The biogas is first conditioned and then oxidised in the SOFC producing electrical power. • The remaining fuel downstream of the SOFC is burned in a combustion chamber (4). • The burned gas expands in the turbine (5) which produces additional electricity using a generator. • The remaining heat can be used for heating or process heat & steam purposes (6). Combined Control Strategy highly efficient flexible clean The pressurized and preheated air increases the power density and efficiency of the SOFC, significantly reducing the number of SOFC stacks needed for the given power output. The generator of the MGT produces additional electrical power without using extra fuel. Realizing this concept would validate the great potential of the hybrid power plant as a highly efficient, flexible and energy-sustainable source of heat and electrical power.
