Exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant: External steam reforming against internal steam reforming
Two different configurations of a system including a cogeneration plant based on molten carbonate fuel cell (MCFC) with internal steam reforming (IR-MCFC) and external steam reforming (ER-MCFC) for producing power and hot water are modeled and investigated thermodynamically. Energetic, exergetic and...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Fuel Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666052023000080 |
| _version_ | 1797690890165157888 |
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| author | Ata Chitsaz Sajed Hadi Bafekr Shahriyar Ghazanfari Holagh |
| author_facet | Ata Chitsaz Sajed Hadi Bafekr Shahriyar Ghazanfari Holagh |
| author_sort | Ata Chitsaz |
| collection | DOAJ |
| description | Two different configurations of a system including a cogeneration plant based on molten carbonate fuel cell (MCFC) with internal steam reforming (IR-MCFC) and external steam reforming (ER-MCFC) for producing power and hot water are modeled and investigated thermodynamically. Energetic, exergetic and environmental analyses are performed for the proposed systems and compared with each other from different viewpoints. Effects of various parameters, namely after-burner emissions recycling, fuel utilization ratio, operating temperature of stack and current density are investigated on the output potential voltages and any kind of voltage losses, net generated power, CO2 emission and energy and exergy efficiencies of two proposed cogeneration plants. The main sources of irreversibility are introduced for each system as well. The comparative analysis revealed that energy efficiencies of the IR-MCFC and IR-MCFC based cogeneration systems are about 14.85% and 4.82% larger than those of the ER-MCFC and ER-MCFC-based cogeneration systems, respectively. Also, exergy efficiencies of the IR-MCFC and IR-MCFC based cogeneration systems are about 14.46% and 11.08% more than exergy efficiencies of their external reforming types, respectively. The results indicated that CO2 emission of ER-MCFC system (0.18 kg/MW) is almost two times of IR-MCFC system (0.36 kg/MW). |
| first_indexed | 2024-03-12T02:06:36Z |
| format | Article |
| id | doaj.art-d4fabab54eb941cbafecb343b3e63a83 |
| institution | Directory Open Access Journal |
| issn | 2666-0520 |
| language | English |
| last_indexed | 2024-03-12T02:06:36Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Fuel Communications |
| spelling | doaj.art-d4fabab54eb941cbafecb343b3e63a832023-09-07T04:44:47ZengElsevierFuel Communications2666-05202023-09-0116100092Exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant: External steam reforming against internal steam reformingAta Chitsaz0Sajed Hadi Bafekr1Shahriyar Ghazanfari Holagh2Mechanical Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran; Corresponding author.Mechanical Engineering Department, Faculty of Engineering, Urmia University, Urmia, IranSchool of Mechanical Engineering, Iran University of Science and Technology, Tehran, IranTwo different configurations of a system including a cogeneration plant based on molten carbonate fuel cell (MCFC) with internal steam reforming (IR-MCFC) and external steam reforming (ER-MCFC) for producing power and hot water are modeled and investigated thermodynamically. Energetic, exergetic and environmental analyses are performed for the proposed systems and compared with each other from different viewpoints. Effects of various parameters, namely after-burner emissions recycling, fuel utilization ratio, operating temperature of stack and current density are investigated on the output potential voltages and any kind of voltage losses, net generated power, CO2 emission and energy and exergy efficiencies of two proposed cogeneration plants. The main sources of irreversibility are introduced for each system as well. The comparative analysis revealed that energy efficiencies of the IR-MCFC and IR-MCFC based cogeneration systems are about 14.85% and 4.82% larger than those of the ER-MCFC and ER-MCFC-based cogeneration systems, respectively. Also, exergy efficiencies of the IR-MCFC and IR-MCFC based cogeneration systems are about 14.46% and 11.08% more than exergy efficiencies of their external reforming types, respectively. The results indicated that CO2 emission of ER-MCFC system (0.18 kg/MW) is almost two times of IR-MCFC system (0.36 kg/MW).http://www.sciencedirect.com/science/article/pii/S2666052023000080Molten carbonate fuel cellInternal steam reformingExternal steam reformingCogenerationEnergy and exergy efficiencies |
| spellingShingle | Ata Chitsaz Sajed Hadi Bafekr Shahriyar Ghazanfari Holagh Exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant: External steam reforming against internal steam reforming Fuel Communications Molten carbonate fuel cell Internal steam reforming External steam reforming Cogeneration Energy and exergy efficiencies |
| title | Exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant: External steam reforming against internal steam reforming |
| title_full | Exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant: External steam reforming against internal steam reforming |
| title_fullStr | Exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant: External steam reforming against internal steam reforming |
| title_full_unstemmed | Exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant: External steam reforming against internal steam reforming |
| title_short | Exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant: External steam reforming against internal steam reforming |
| title_sort | exergy and environmental assessments of the performance of a molten carbonate fuel cell cogeneration plant external steam reforming against internal steam reforming |
| topic | Molten carbonate fuel cell Internal steam reforming External steam reforming Cogeneration Energy and exergy efficiencies |
| url | http://www.sciencedirect.com/science/article/pii/S2666052023000080 |
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