Paper details

Title:

Improving Energy Efficiency in Small-Scale Biogas-Powered Solid Oxide Fuel Cell Systems by CO₂ Removal and Bidirectional Operation

Author(s):

Weinrich, J., Herrmann, S., Fischer, F., Hauck, M., Spliethoff, H., Gaderer, M.

Document(s):

Abstract:

Electricity from biogas plays an important role in a fossil-free energy system since it provides base load power. However, the conversion process is usually based on gas engines with comparatively low electrical efficiencies. We developed a new CHP system for the conversion of biogas to electricity with a net efficiency exceeding 80 % by use of highly efficient solid oxide fuel cells (SOFC). In addition, the operation mode of the system can be reversed to serve as a power-to-gas facility for energy storage that provides a high reserve potential for the electrical grid. Within an ongoing validation project, we want to build and prove the performance of a fully functional small-scale 10 kWel demonstration plant in a 3-month field test with raw biogas.

Keywords:

biogas, efficiency, methane, fuel cell, combined heat and power generation (CHP)

Topic:

Biomass Conversion Technologies for Heating, Cooling and Electricity

Subtopic:

Anaerobic digestion for biogas and biomethane production

Event:

27th European Biomass Conference and Exhibition

Session:

2CV.8.41

Pages:

992 - 993

ISBN:

978-88-89407-19-6

Paper DOI:

10.5071/27thEUBCE2019-2CV.8.41

Price:

FREE