highly efficient
flexible
clean
Electrical efficiency of the SOFC/MGT Hybrid Power Plant concept compared to other
power plant concepts This 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 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.
Why is Bio-HyPP unique?The technology has the potential to achieve the highest electric efficiency while achieving high load and fuel flexibility at lowest emissions.
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.
Project InformationDuration
Start date: 1st June 2015 End date: 31st May 2019
Project Coordinator Melanie HerbstDeutsches Zentrum für Luft- undRaumfahrt e.V. (DLR)Pfaffenwaldring 38-4070569 Stuttgart, Germanywww.dlr.de
e-mail [email protected]
Project Website
www.bio-hypp.eu
Project Partners
Biogas-fired CombinedHybrid Heat and Power Plant
for sustainable energy
Block diagram of the Hybrid Power Plant concept
Air Bio-Gas
Heat
Micro gasturbine
Solid OxidFuel Cells
Hybrid Power Plant
HeatPower
How does it work? Context and future Challenges
The air is compressed by the compressor (1) of the MGT, and pre-heated in the recuperator (2).Before entering the SOFC (3) the biogas has to be reformed. The unused fuel and the products of the SOFC are recirculated to increase the system efficiency.The remaining SOFC fuel downstream of the SOFC is oxidized in a combustion chamber (4). The hot exhaust gases are expanded in the turbine (5). The remaining heat can be used for heating or process heat & steam purposes (6).
Today’s situation
• 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
• Increase of electric efficiency
• Increase of ratio between electrical power and heat
• Increase of operational flexibility (load & fuel)
• Energy production driven by demand of electricity
• Reduction of the CO2 footprint
• Reduction of harmful emissions
CHP challenges Bio-HyPP objectives
• Electrical efficiency > 60%• Total efficiency > 90%• Power to heat ratio > 2• Primary energy savings > 50%
• Operational flexibility (25% to 100% el. power)
• Fuel flexibility: all types of biogas & natural gas
• CO2 neutral• Low emissions:
NOx < 10 ppm CO < 20 ppm UHC < 1 ppm
System integration anddemonstration
effi
cien
tfl
exib
lecl
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Scientific Tasks
The pressurized and pre-heated air increases
the power density and efficiency of the
SOFC, significantly reducing the SOFC stacks
needed for the given power output. The
generator of the MGT produces additional
electrical power without using extra fuel.
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
Combined control strategy
Market analysis and techno-economic feasibility
Pressurized SOFC-system characterisation
Fuel cell degradation
Life Cycle Assessmentand Life Cycle Cost