The newer power generation systems are becoming more important for the society due to increase in demand for the electrical energy utilization and higher energy conversion efficiencies. Though it is not new, fuel cell technology is one of the promising systems for cleaner and competitive alternate power generation system. When the fuel cells are integrated with the gas turbines, the total thermal efficiency of the combined cycle can be obtained greater than 60%. This is appreciably better exergetic performance when compared to traditional gas turbine cycle. In this work, thermodynamic analysis of SOFC-GT combined system (2.898MW) has been carried out, to evaluate energy efficiency, exergy efficiency and exergy destruction of each component is calculated. The effect of compression ratio (rp), turbine inlet temperature (TIT), air fuel ratio and ambient temperature of air, on the performance of the system has been analyzed by adopting the different fuels. The outcome of the system modeling reveals that SOFC and combustion chamber are the main sources of exergy destruction. When the methane, natural gas and coal gas are used as fuels, at the optimum compression ratio 9, the total thermal efficiencies are found to be 63.3%, 62.12% and 61.02% respectively. The exergy efficiencies are obtained respectively as 60.85%, 59.16% and 60.06%.
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ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability
August 7–10, 2011
Washington, DC, USA
Conference Sponsors:
- Advanced Energy Systems Division
ISBN:
978-0-7918-5469-3
PROCEEDINGS PAPER
Energy and Exergy Analysis of Gas Turbine – Fuel Cell Based Combined Cycle Power Plant Available to Purchase
M. Sreeramulu,
M. Sreeramulu
Jawaharlal Nehru Technological University Hyderabad, Hyderabad, AP, India
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A. V. S. S. K. S. Gupta,
A. V. S. S. K. S. Gupta
Jawaharlal Nehru Technological University Hyderabad, Hyderabad, AP, India
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T. Srinivas
T. Srinivas
VIT University, Vellore, TN, India
Search for other works by this author on:
M. Sreeramulu
Jawaharlal Nehru Technological University Hyderabad, Hyderabad, AP, India
A. V. S. S. K. S. Gupta
Jawaharlal Nehru Technological University Hyderabad, Hyderabad, AP, India
T. Srinivas
VIT University, Vellore, TN, India
Paper No:
FuelCell2011-54783, pp. 85-94; 10 pages
Published Online:
March 22, 2012
Citation
Sreeramulu, M, Gupta, AVSSKS, & Srinivas, T. "Energy and Exergy Analysis of Gas Turbine – Fuel Cell Based Combined Cycle Power Plant." Proceedings of the ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability. ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Washington, DC, USA. August 7–10, 2011. pp. 85-94. ASME. https://doi.org/10.1115/FuelCell2011-54783
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