Techno-economic and environmental analysis of hybrid SOFC-GT-sCO2 systems for sustainable energy generation

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-03-27 DOI:10.1016/j.ijhydene.2025.03.238

Anil Kumar Yadav , Shailendra Sinha , Anil Kumar

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Abstract

This study employs a supercritical carbon dioxide (sCO₂) system to recover and repurpose the excess heat from the solid oxide fuel cell (SOFC)-gas turbine (GT) for electricity generation. Thermodynamic, economic, and environmental assessments of integrated power generation using SOFC-GT with three configurations of sCO₂ cycle are reported. The Engineering Equation Solver (EES) software is used to model the system configuration. The compared sCO₂ technologies are recuperation, recompression, and partial heating cycles. Recuperated sCO₂ cycle achieves optimum value of electrical, exergy efficiencies, CO₂ emission, and total cost rate as 61.49 %, 59.15 %, 0.322 kg/kWh, and 4.74 $/h, respectively. Recompression cycle hybrid system achieves electrical, exergy efficiencies, CO₂ emission, and total cost rate of 61.09 %, 58.77 %, 0.324 kg/kWh, and 5.646 $/h, respectively. Preheating cycle achieves the electrical, exergy efficiencies, CO₂ emission, and total cost rate of 61.46 %, 59.12 %, 0.322 kg/kWh, and 5.941 $/h, respectively. LCOE of the recuperated, recompression, and partial heating cycles are 39.4 $/MWh, 42.31$/MWh, and 42.94 $/MWh, respectively.

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本研究采用超临界二氧化碳（sCO2）系统回收并重新利用固体氧化物燃料电池（SOFC）-燃气轮机（GT）产生的多余热量进行发电。报告采用三种 sCO2 循环配置，对 SOFC-GT 集成发电进行了热力学、经济和环境评估。使用工程方程求解器 (EES) 软件对系统配置进行建模。所比较的 sCO2 技术包括再生、再压缩和部分加热循环。回收式 sCO2 循环的电效率、放能效率、二氧化碳排放量和总成本率分别达到 61.49%、59.15%、0.322 kg/kWh 和 4.74 美元/小时的最佳值。再压缩循环混合系统的电气效率、放能效率、二氧化碳排放量和总成本率分别为 61.09 %、58.77 %、0.324 kg/kWh 和 5.646 美元/小时。预热循环的电气效率、放能效率、二氧化碳排放量和总成本率分别为 61.46 %、59.12 %、0.322 kg/kWh 和 5.941 美元/小时。换热循环、再压缩循环和部分加热循环的 LCOE 分别为 39.4 美元/兆瓦时、42.31 美元/兆瓦时和 42.94 美元/兆瓦时。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.