Achieving high-efficiency conversion and poly-generation of cooling, heating, and power based on biomass-fueled SOFC hybrid system: Performance assessment and multi-objective optimization

Zhu, Pengfei; Wu, Zhen; Guo, Leilei; Yao, Jing; Dai, Min; Ren, Jianwei; Kurko, Sandra; Yan, Hongli; Yang, Fusheng; Zhang, Zaoxiao

doi:10.1016/j.enconman.2021.114245

Cited by 70 publications

(20 citation statements)

References 49 publications

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“…The inlet flow of the SOFC affects the whole system efficiency, which can be deduced from eq where A cell is the SOFC active surface area, N cell is the number of SOFCs, and UFF is the factor of fuel utilization.…”

Section: Description Of the Metal-supported Sofc Modelmentioning

confidence: 99%

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Design and Evaluation of a Metal-Supported Solid Oxide Fuel Cell Vehicle Power System with Bioethanol Onboard Reforming

Zhao

et al. 2021

ACS Omega

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A solid oxide fuel cell (SOFC) has wide stationary and mobile application prospects due to its high efficiency and fuel flexibility. The SOFC system’s performance depends on the reforming option and system design. In this paper, we designed a novel SOFC auxiliary power unit (APU) system with ethanol on-board reforming aiming at vehicle application. The thermodynamic analysis is employed to evaluate the ethanol-fueled SOFC performance of different reforming options with a metal-supported SOFC working at 600 °C and a 0.3 A/cm2 current density. The electrical efficiency of the SOFC can reach a maximum of 50% with ethanol autothermal reforming. Under the optimal reforming option and operating conditions, the conceptual SOFC-APU system design is identified with the trade-off between system efficiency and ethanol flow from the startup and stable operation phase. The results show that the system efficiency of 44.4% can be achieved with a 0.42 g/s ethanol flow at the startup phase. During the stable operation, the electrical efficiency and exergy efficiency of the SOFC-APU system can reach 55.4 and 77.1% with a 70% anode gas recirculation ratio, respectively.

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Section: Description Of the Metal-supported Sofc Modelmentioning

confidence: 99%

“…Key Parameters. The inlet flow of the SOFC affects the whole system efficiency, which can be deduced from eq 11 27…”

Section: Description Of the Metal-supported Sofcmentioning

confidence: 99%

Design and Evaluation of a Metal-Supported Solid Oxide Fuel Cell Vehicle Power System with Bioethanol Onboard Reforming

Zhao

et al. 2021

ACS Omega

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“…Carbon will still be the dominant fuel on the Earth in the next decades, and the development of advanced and clean coal utilization technologies is crucial and urgent. Fuel cells, a kind of stable and clean electrochemistry power generators, are regarded as one of the most promising solutions to tackle environmental and energy issues 2,3 . Fuel cells are mainly classified into six types according to their electrolytes 4 .…”

Section: Introductionmentioning

confidence: 99%

“…Fuel cells, a kind of stable and clean electrochemistry power generators, are regarded as one of the most promising solutions to tackle environmental and energy issues. 2,3 Fuel cells are mainly classified into six types according to their electrolytes. 4 Solid oxide fuel cells (SOFCs) stay at the forefront of the research studies owing to their many merits, such as high efficiency, without noble metals and moving parts, and flexibility for various fuels.…”

mentioning

confidence: 99%

A cost‐efficient path to utilize coal via solid oxide fuel cells and alkali metal thermoelectric converters

Yang

Ren

Zhang

2022

Intl J of Energy Research

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In addition to directly burning in firepower plants, coal can be alternatively gasified into gaseous carbon monoxide and then fed into solid oxide fuel cells for efficient power generation. Carbon monoxide solid oxide fuel cells (CO-SOFCs) not only avoid the drawbacks of expensive hydrogen fuel but also facilitate carbon dioxide's separation and enrichment. In this paper, an integrated system is first presented to efficiently recycle the waste heat released from CO-SOFCs via alkali metal thermoelectric converters (AMTECs) for additional electricity generation. Key performance indicators such as power density and energy efficiency are mathematically expressed by including the heat-transfer losses between heat sources and AMTEC. The maximum power density of the integrated system gains 18% improvement compared with that of the sole CO-SOFC. The maximum efficiency can reach 60.84%. The optimum ranges of the current density, efficiency, and power density for the whole integrated system are determined. Furthermore, the influences of the fuel cell temperature on the optimum ranges are also studied. The correlations between the critical parameters and the maximum power density and efficiency of the system are revealed. The maximum power density and efficiency as well as the corresponding parameters are calculated numerically. The findings show that waste heat can be recycled efficiently by employing AMTECs. Novelty Statement• A numerical model of the CO-SOFC/AMTEC integrated system is established.• The maximum efficiency of the hybrid system can reach 60.84%.• The optimum ranges of key parameters are determined and discussed.

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“…Furthermore, the classical NSGA-II multiobjective optimization analysis is widely used in chemical process optimization analysis because of its fast-running speed and good convergence of solution sets. − The following summarizes some application research examples of multiobjective optimization in chemical processes. For the combined cooling heating and power (CCHP) system, Zhu et al established a compromise between CCHP efficiency, exergy efficiency, and the annual total cost of a CCHP system. The multiobjective optimization showed that the CCHP system could reach the high efficiency of 75%, the low total annual cost of 410 k$, and net electrical efficiency of 52% simultaneously.…”

Section: Introductionmentioning

confidence: 99%

A Novel Coal-Based Calcium Carbide-Acetylene System Process Based on Multistage Carbon Capture and Waste Slag Recycling Design: A Multiobjective Optimization Evaluation Perspective

Wang

Zhu

Dai

et al. 2022

Ind. Eng. Chem. Res.

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Large amounts of raw material consumption, high energy consumption, and severe pollution have always been the key factors restricting the stable development of the coal-to-calcium carbide industry. Therefore, this paper presents a novel combined carbon capture and utilization and solid waste recycling system of the coal-based calcium carbide-acetylene production (CCAP) process to improve these deficiencies. This improved CCAP system consists of a gasifier, carbide furnace, acetylene furnace, the newly designed coupling module of a recarbonization furnace and calciner, and mineralization units. The thermodynamic model of the CCAP system is developed to calculate the effective atomic yield, carbon consumption, CO 2 emission, etc. to evaluate the performance. The improved system performed better with the effective atomic yield (98.50%), CO 2 capture rate (69.57%), CO 2 emission (1.1064 t CO 2 •(t −1 C 2 H 2 )), CO 2 e emission (7.2092 t CO 2 e•(t −1 C 2 H 2 )), and carbon consumption (3.2101 t Coal•(t −1 C 2 H 2 )) than the referenced system with 64.57%, 0, 2.25 t CO 2 •(t −1 C 2 H 2 ), 20.4122 t CO 2 e• (t −1 C 2 H 2 ), and 5.43 t Coal•(t −1 C 2 H 2 ), respectively. The exergy analysis shows that the improved system performed better for efficient energy utilization with an exergy efficiency of 48.97% for a large-scale chemical process. Besides, the trade-off between the maximum effective atomic yield, minimum carbon consumption, CO 2 equivalent emission, and total annual cost (TAC) is conducted through multiobjective optimization. By three-objective optimization, the improved system could achieve a lower TAC of 8.51 × 10 6 $/year, CO 2 e emission of 4.1573 t CO 2 e•(t −1 C 2 H 2 ), and carbon consumption of 1.9874 t Coal•(t −1 C 2 H 2 ) simultaneously, which decreased by 38.78%, 79.63%, and 63.40%, respectively, than that of the referenced system. The all-around performance of the improved CCAP system after multiobjective optimization has been dramatically improved, making it more competitive in energy conservation, emission reduction, and resource recovery.

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Achieving high-efficiency conversion and poly-generation of cooling, heating, and power based on biomass-fueled SOFC hybrid system: Performance assessment and multi-objective optimization

Cited by 70 publications

References 49 publications

Design and Evaluation of a Metal-Supported Solid Oxide Fuel Cell Vehicle Power System with Bioethanol Onboard Reforming

Design and Evaluation of a Metal-Supported Solid Oxide Fuel Cell Vehicle Power System with Bioethanol Onboard Reforming

A cost‐efficient path to utilize coal via solid oxide fuel cells and alkali metal thermoelectric converters

A Novel Coal-Based Calcium Carbide-Acetylene System Process Based on Multistage Carbon Capture and Waste Slag Recycling Design: A Multiobjective Optimization Evaluation Perspective

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