Journal article
Exergy analysis and optimization of a biomass gasification, solid oxide fuel cell and micro gas turbine hybrid system
A hybrid plant producing combined heat and power (CHP) from biomass by use of a two-stage gasification concept, solid oxide fuel cells (SOFC) and a micro gas turbine was considered for optimization. The hybrid plant represents a sustainable and efficient alternative to conventional decentralized CHP plants.
A clean product gas was produced by the demonstrated two-stage gasifier, thus only simple gas conditioning was necessary prior to the SOFC stack. The plant was investigated by thermodynamic modeling combining zero-dimensional component models into complete system-level models. Energy and exergy analyses were applied.
Focus in this optimization study was heat management, and the optimization efforts resulted in a substantial gain of approximately 6% in the electrical efficiency of the plant. The optimized hybrid plant produced approximately 290 kWe at an electrical efficiency of 58.2% based on lower heating value (LHV).
Language: | English |
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Year: | 2011 |
Pages: | 4740-4752 |
ISSN: | 18736785 and 03605442 |
Types: | Journal article |
DOI: | 10.1016/j.energy.2011.05.005 |
ORCIDs: | Rokni, Masoud and Elmegaard, Brian |