1. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 SOFC-gas turbine cycle with steam generation for methane conversion in the SOFC. Devices are identified as follows: SOFC stack (1), combustion chamber (2), turbine (3), compressors (4 and 5), heat exchangers (6–8), evaporator (9), condenser (10), pump (11), separator (12), mixers (13 and 14), and flow divider valves (15 and 16). The anode and cathode of the SOFC stack are identified by a and b, respectively. Figure Legend:

2. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Block diagram of the analyzed system Figure Legend:

3. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Variation with fuel cell stack energy efficiency ηs of operational-circuit fuel cell voltage Vs and number of moles of oxygen nO2 crossing the fuel cell electrolyte (per mole of methane input to the overall system) Figure Legend:

4. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Variation with operational-circuit fuel cell voltage Vs of circulating water flow rate nO2 (per mole of methane input to the overall system) Figure Legend:

5. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Variations in electrical energy We and net work WM (at turbine) per mole of methane consumed in the combined SOFC-gas turbine system, with operational-circuit fuel cell voltage Vs Figure Legend:

6. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Variations with operational-circuit fuel cell voltage Vs of overall exergy destruction and the exergy destruction in the SOFC stack and combustion chamber per mole of methane consumed in the combined SOFC-gas turbine system Figure Legend:

7. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Variation with operational-circuit fuel cell voltage Vs of thermal efficiency ηT and exergy efficiency ηe for the integrated SOFC-gas turbine system. The operating region is between Vs=0.4–0.7 V. Figure Legend:

8. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Energy and exergy diagram for the overall plant showing flows of energy (values not in parentheses) and exergy (values in parentheses associated with flows). Also, exergy destruction for the overall plant is shown in parentheses in the box, which represents the plant. Flows are grouped into three categories: inputs, product outputs, and waste emissions. All values are in kJ/mole of methane input. Figure Legend:

9. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Exergy destructions per mole of methane consumed for the devices in the integrated system for the illustrative example, where Vs=0.61 V (corresponding to ηs=20%). Column labels correspond to devices in Fig.. Figure Legend:

10. Date of download: 6/29/2016 Copyright © ASME. All rights reserved. From: Exergetic Performance Analysis of a Gas Turbine Cycle Integrated With Solid Oxide Fuel Cells J. Energy Resour. Technol. 2009;131(3):032001-032001-11. doi:10.1115/1.3185348 Energy and exergy diagram for the SOFC-gas turbine plant showing flows of energy (values not in parentheses) and exergy (values in parentheses associated with flows), as well as exergy destructions (values in parentheses in the boxes representing plant devices or sections). Devices are grouped into the three categories described in the text, to simplify the diagram. All values are in kJ/mole of methane input. Figure Legend: