Journal
ENERGY
Volume 58, Issue -, Pages 527-537Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2013.06.046
Keywords
Biomass gasification; Solid oxide fuel cells; Combined heat and power; Thermodynamics; Modeling
Categories
Funding
- ForskEL-programme of Energinet.dk
Ask authors/readers for more resources
To investigate options for increasing the electrical efficiency of decentralized combined heat and power (CHP) plants fuelled with biomass compared to conventional technology, this research explored the performance of an alternative plant design based on thermal biomass gasification and solid oxide fuel cells (SOFC). Based on experimental data from a demonstrated 0.6 MWth two-stage gasifier, a model of the gasifier plant was developed and calibrated. Similarly, an SOFC model was developed using published experimental data. Simulation of a 3 MWth plant combining two-stage biomass gasification and SOFCs predicted a net electrical efficiency of 44.9% (LHV (lower heating value)) when 1.4 MWe power was produced. The work had significant focus on providing a highly accurate model of the complete plant. A sensitivity analysis revealed that the SOFC operating temperature, SOFC fuel utilization factor, carbon conversion factor in the gasifier and the efficiency of the DC/AC inverter were the most influential parameters in the model. Thus, a detailed study of the practical values of these parameters was conducted to determine the performance of the plant with the lowest possible uncertainty. The SOFC fuel utilization will in practice be based on a balance between efficiency and lifetime of the SOFC and is thus a decision of the plant design. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available