School of Information Engineering, Nanchang University, Nanchang, China.
Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University), Jilin, China.
Chemosphere. 2023 May;323:138182. doi: 10.1016/j.chemosphere.2023.138182. Epub 2023 Mar 1.
Thesolid oxide fuel cell (SOFC), as an economically friendly power generation system, shows a promising prospect for the future while hydrogen supply as its fuel is one of the main challenges. In this paper, an integrated system is described and evaluated by energy, exergy, and exergoeconomic, aspects. To find an optimum design state three models were analyzed to reach higher energy and exergy efficiency while system cost is at its lower value. After the first and main models, a Stirling engine reuses the first model's waste heat to generate power and enhance efficiency. In the last model, a proton exchange membrane electrolyzer (PEME) is considered for hydrogen production purposes by using the surplus power of the Stirling engine. The components validation is performed in comparison with the data presented by related studies. Optimization is applied by exergy efficiency, total cost, and hydrogen production rate considerations. The results show that the total cost of the model (a), (b), and (c) is 30.36 ($/GJ), 27.48 ($/GJ), and 33.82 ($/GJ), and the energy efficiency is 31.6%, 51.51%, 46.61% and the exergy efficiency is 24.07%, 33.0.9%, 29.28% respectively with the cost of at the optimum condition achieved by 2708 A/m current density, 0.84 utilization factor, 0.38 recycling anode ratio, 1.14 air blower and 1.58 fuel blower pressure ratio. The optimum rate of hydrogen production will be 138.2 kg/day and the overall product cost will be 57.58 $/GJ. In general, the proposed integrated systems show a good performance in both thermodynamics and environmental and economic aspects.
固体氧化物燃料电池 (SOFC) 作为一种经济友好型发电系统，在未来具有广阔的前景，而氢气作为其燃料供应是主要挑战之一。本文从能量、火用和火用经济三个方面对集成系统进行了描述和评估。为了找到最佳设计状态，分析了三个模型，以在系统成本处于较低水平的同时提高能量和火用效率。在第一个主要模型之后，引入了斯特林发动机来利用第一个模型的余热来发电并提高效率。在最后一个模型中，质子交换膜电解槽 (PEME) 被用于利用斯特林发动机的剩余功率来生产氢气。通过与相关研究中提出的数据进行比较，对组件进行了验证。通过考虑火用效率、总成本和产氢速率进行了优化。结果表明，模型 (a)、(b) 和 (c) 的总成本分别为 30.36（$/GJ）、27.48（$/GJ）和 33.82（$/GJ），能量效率分别为 31.6%、51.51%和 46.61%，火用效率分别为 24.07%、33.09%和 29.28%，最佳条件下的成本由 2708 A/m 电流密度、0.84 利用率、0.38 回收阳极比、1.14 空气鼓风机和 1.58 燃料鼓风机压力比实现。最佳产氢速率将达到 138.2 kg/天，总产品成本将为 57.58$/GJ。总的来说，所提出的集成系统在热力学、环境和经济方面都表现出良好的性能。
