Optimization-based comparative study of six SOFC-driven systems employing various reforming techniques: Efficiency, life cycle cost, and CO2 emissions assessment

IF 6.9 2区 工程技术 Q2 ENERGY & FUELS
Amirali Nouri , Siamak Dadgar , Ata Chitsaz , Navid Kousheshi , Araz Emami
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引用次数: 0

Abstract

Despite the growing interest in solid oxide fuel cell (SOFC)-based systems for clean and efficient power generation, limited studies have comprehensively compared different methane reforming techniques integrated with SOFCs from energy, economic, and CO2 emissions perspectives. This study addresses this gap by providing a comparative evaluation of six SOFC-based power plants, each employing a distinct reforming method: steam methane reforming (SMR), dry methane reforming (DMR), partial oxidation of methane (POX), air and water-assisted autothermal reforming (AWATR), air and CO2-assisted autothermal reforming (ACATR), and air, CO2, and water-assisted autothermal reforming (ACWATR). The performance evaluation focuses on energy efficiency, life cycle cost (LCC), and environmental impact (CO2 emissions). Under optimal conditions, the SMR-based system demonstrates superior performance, achieving the highest net power output (491.7 kW), domestic hot water (DHW) production (337.7 kW), electrical efficiency (48.4 %), and combined heat and power (CHP) efficiency (81.7 %), alongside the lowest CO2 emissions (408 kg/MWh). However, this system incurs the highest LCC ($2.8 MM) due to its greater SOFC cell requirements. In contrast, the ACATR-based system achieves the lowest LCC ($1.3 MM) but exhibits the poorest performance, including the lowest net power output (189.8 kW), electrical efficiency (22.7 %), and the highest CO2 emissions (1705.8 kg/MWh). Excluding the SMR configuration, the POX-based system emerges as a viable alternative, balancing high electrical efficiency with reduced environmental impact.
基于优化的六种sofc驱动系统的比较研究,采用不同的改造技术:效率、生命周期成本和二氧化碳排放评估
尽管人们对基于固体氧化物燃料电池(SOFC)的清洁高效发电系统越来越感兴趣,但从能源、经济和二氧化碳排放的角度全面比较了与SOFC相结合的不同甲烷重整技术的研究有限。本研究通过对六个基于sofc的发电厂进行比较评估,解决了这一差距,每个发电厂都采用不同的重整方法:蒸汽甲烷重整(SMR),干甲烷重整(DMR),甲烷部分氧化(POX),空气和水辅助自热重整(watr),空气和二氧化碳辅助自热重整(ACATR),空气,二氧化碳和水辅助自热重整(ACWATR)。绩效评估侧重于能源效率、生命周期成本(LCC)和环境影响(CO2排放)。在最佳条件下,基于smr的系统表现出卓越的性能,实现了最高的净输出功率(491.7 kW),生活热水(DHW)产量(337.7 kW),电效率(48.4%)和热电联产(CHP)效率(81.7%),同时二氧化碳排放量最低(408 kg/MWh)。然而,由于其更高的SOFC电池要求,该系统的LCC最高(280万美元)。相比之下,基于acatr的系统实现了最低的LCC(130万美元),但表现出最差的性能,包括最低的净功率输出(189.8千瓦)、电效率(22.7%)和最高的二氧化碳排放量(1705.8千克/兆瓦时)。除了SMR配置外,基于pox的系统成为一种可行的替代方案,可以平衡高电气效率和减少对环境的影响。
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来源期刊
Applied Thermal Engineering
Applied Thermal Engineering 工程技术-工程:机械
CiteScore
11.30
自引率
15.60%
发文量
1474
审稿时长
57 days
期刊介绍: Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.
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