Exergy Analysis and Optimization of Gasifier-Solid Oxide Fuel Cell-Gas Turbine Hybrid System

Dev Nandwana, Amrit Raj, Tejas Deepak Kadkade, Manavalla Sreekanth


In this paper, different systems based on integrated gasifier-solid oxide fuel cells (SOFC)-gas turbine hybrid system are modelled to carry out their thermodynamic analysis. The thermodynamic flowsheet software Cycle-Tempo is used to analyze the performance of the modelled systems. Influence of fuels viz. coal and cow manure on the performance of the integrated hybrid system is studied. It is observed that the efficiency of the system changes with change in fuel. The electrical efficiency is found to be 40.2% when coal was used as fuel, and the efficiency increased to 48.2% when coal was replaced by cow manure as fuel. Exergy analysis of the integrated hybrid base case system is performed to find out the components responsible for the poor efficiency of the system. Based on the exergy analysis of the base case system, a new optimized system was designed with the critical operating parameters remaining the same. The system efficiency increased from 40.2% to 49% with coal as fuel and from 48.2% to 56.9% with cow manure as fuel in the optimized system. Exergy analysis of the optimized system depicts that there is a reduction in total relative exergy loss percentage when compared to the base case system.


exergy analysis; gas turbine; gasifier; optimization; solid oxide fuel cell (SOFC)

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Lin C.-H., Lin R.-T., Chen T., Zigler C., Wei Y., and Christiani D.C., 2019. A global perspective on coal-fired power plants and the burden of lung cancer. BioMed Central 18(1): 1-2.

Hammond G.P. and J. Spargo. 2014. The prospects for coal-fired power plants with carbon capture and storage: A UK perspective. Energy Conversion and Management 86: 476-479.

Pokale W.K., 2012. Effects of thermal power plant on environment. Trade Science Inc 2(3): 212-214.

Kolhe M.R. and P.G. Khot. 2014. Coal-an energy source for present and future. International Journal of Management 5(10):71-90.

Stambouli A.B. and E. Traversa. 2002. Solid oxide fuel cells (SOFCs): a review of an environmentally clean and efficient source of energy. Renewable and Sustainable Energy Reviews 6: 436.

Aravind P.V., Woudstra T., Woudstra N., and Spliethoff H., 2009. Thermodynamic evaluation of small-scale systems with biomass gasifiers, solid oxide fuel cells with Ni/GDC anodes and gas turbines. Journal of Power Sources 190: 465.

Fan L., Dimitriou E., Pourquie M.J.B.M., Liu M., Verkooijen A.H.M. and Aravind P.V., 2012. Prediction of the performance of a solid oxide fuel cell fuelled with biosyngas: Influence of different steam-reforming reaction kinetic parameters. International Journal of Hydrogen Energy 38: 511-512.

Charpentier P., Fragnaud P., Schleich D.M. and Gehain E., 2000. Preparation of thin film SOFCs working at reduced temperature. Solid State Ionics 135: 373.

Li D.X., Liu J.B., Ni Y.H., Farahini M.R., and Imran M., 2017. Economic feasibility study of hydrogen production from biomass gasification for PEM fuel cell applications. Energy Sources, Part B: Economics, Planning, and Policy 12(7): 659-664.

Ormerod R.M., 2002. Solid oxide fuel cells. Royal Society of Chemistry 32: 17-19.

Karvountzi G.C., Price C.M. and Duby P.F., 2004. Comparison of molten carbonate and solid oxide fuel cells for integration in a hybrid system for cogeneration or tri-generation. In ASME 2004 International Mechanical Engineering Congress and Exposition, 139-150. American Society of Mechanical Engineers.

Song C., 2002. Fuel processing for low-temperature and high-temperature fuel cells challenges, and opportunities for sustainable development in the 21st century. Catalysis Today 77: 23-28.

Kirubakaran A., Jain S., and Nema R.K., 2009. A review on fuel cell technologies and power electronic interface. Renewable and Sustainable Energy Reviews 13(9): 2431-2433.

Fernandes A., Brabandt J., Posdziech O., Saadabadi A., Recalde M., Fan L., Promes E.O., Liu M., Woudstra T., and Aravind P., 2018. Design, construction, and testing of a gasifier-specific solid oxide fuel cell system. Energies 11(8): 1-3.

Aravind P.V. and W. de Jong. 2012. Evaluation of high temperature gas cleaning options for biomass gasification product gas for solid oxide fuel cells, Progress in Energy and Combustion Science 38: 737-764.

Colpan C.O., Hamdullahpur F., Dincer I., and Yoo Y., 2010. Effect of gasification agent on the performance of solid oxide fuel cell and biomass gasification systems, International Journal of Hydrogen Energy 35: 5001-5009.

Douvartzides S., Coutelieris F., and Tsiakaras P., 2003. On the systematic optimization of ethanol fed SOFC-based electricity generating systems in terms of energy and exergy. Journal of Power Sources 114: 203–12.

Pierobon L. and M. Rokni. 2014. Thermodynamic analysis of an integrated gasification solid oxide fuel cell plant with a Kalina cycle. International Journal of Green Energy 12(6): 610-619.

Rokni M., 2014. Thermodynamic and thermoeconomic analysis of a system with biomass gasification, solid oxide fuel cell (SOFC) and Stirling engine. Energy 1-13.

Bang-Moller C. and M. Rokni. 2010. Thermodynamic performance study of biomass gasification, solid oxide fuel cell and micro gas turbine hybrid systems. Energy Conversion and Management 51: 2330–2339.

Li M., Rao A.D., Brouwer J., and Samuelsen G.S., 2010. Design of highly efficient coal-based integrated gasification fuel cell power plant. Journal of Power Sources 195(17):5707-5718.

Cengel Y.A. and M.A. Boles. 2010. Thermodynamics: An Engineering Approach, 6th Edition, Tata Mc Graw-Hill Companies.

Bang-Møller C., Rokni M., and Elmegaard B., 2011. Exergy analysis and optimization of a biomass gasification, solid oxide fuel cell and micro gas turbine hybrid system. Energy 36: 4740-4752.