Design and eco-technoeconomic analyses of SOFC/GT hybrid systems accounting for long-term degradation effects
| Autor: | Thomas A. Adams, Haoxiang Lai, David Tucker, Nor Farida Harun |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Gas turbines
Renewable Energy Sustainability and the Environment business.industry Matlab simulink Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Fuel Technology Hybrid plant Long term degradation Hybrid system Environmental science Solid oxide fuel cell 0210 nano-technology Cost of electricity by source Process engineering business Overall efficiency |
| Zdroj: | International Journal of Hydrogen Energy. 46:5612-5629 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2020.11.032 |
| Popis: | This study compares two SOFC/GT (solid oxide fuel cell with gas turbine) hybrid systems to that of two standalone SOFC systems via eco-technoeconomic analyses that account for long-term degradation effects. Four cases were examined: 1) standalone SOFC plant without a steam bottoming cycle; 2) standalone SOFC plant with a steam bottoming cycle; 3) SOFC/GT hybrid plant without a steam bottoming cycle; and 4) SOFC/GT with a steam bottoming cycle. This study employed a real-time 1D SOFC model with an empirical degradation calculation integrated with steady-state balance-of-plant models. Simulations used Matlab Simulink R2017a, Aspen Plus V10, and Python 3.7.4 with a pseudo steady-state approach. The results showed that, with some trade-offs, the SOFC/GT hybrid plant with the steam bottoming cycle is the best option, with an overall efficiency of 44.6% LHV, an LCOE (levelized cost of electricity) of $US 77/MWh, and a CCA (cost of CO2 avoided) of -$US 49.3/tonneCO2e. The sensitivity analysis also indicated that SOFC/GT hybrid plants were less sensitive to SOFC price compared to standalone SOFC plants. The sensitivity analysis indicated that using a larger gas turbine and replacing the SOFC stack less frequently was the better design choice for the SOFC/GT hybrid plant. |
| Databáze: | OpenAIRE |
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