摘要
针对一种基于天然气的固体氧化物燃料电池(SOFC)系统,通过仿真和试验研究,探讨了在天然气中掺混不同比例氢气时,系统性能的变化规律及碳排放情况。通过SOFC系统模型,仿真计算了不同掺氢比(0~100%)下系统的运行性能,分析了系统在不同负荷工况下的性能变化规律。验证了仿真结果的准确性,明确了掺氢对系统运行过程的影响。结果表明,掺氢比从0%增加至100%使电堆电压明显提高,同时使余热回收效率提高了15.9%,热电联产效率可以保持在85%以上。但是系统净发电效率因寄生功耗增加而下降了16.9%,经过优化,系统净发电效率下降幅度可降至4.8%。同时,按照30%掺氢比计算,1 MW的SOFC电站可以实现每天约839 kg的CO_(2)减排量和152 kg的氢气消纳量。
For a natural gas-based solid oxide fuel cell(SOFC)system,this study investigates the changes in system performance and carbon emissions levels when different proportions of hydrogen are blended into natural gas.Through simulation and experimental studies,the operating performance of the system under various hydrogen blending ratios(0%to 100%)was simulated using an SOFC system model,and the performance variation patterns under different load conditions were analyzed.Experimental validation confirmed the accuracy of the simulation results and clarified the effects of hydrogen blending on the system's operation.The results showed that increasing the hydrogen blending ratio from 0%to 100%improved the stack voltage significantly,increased the waste heat recovery efficiency by 15.9%,and the combined heat and power(CHP)efficiency can be maintained above 85%.However,due to increased parasitic power consumption,the net electrical efficiency of the system decreased by 16.9%.After optimization,the decrease in net electrical efficiency can be reduced to 4.8%.Additionally,with a 30%hydrogen blending ratio,a 1 MW SOFC 2318 power station could achieve approximately 839 kg of daily CO_(2) emission reductions and consume about 152 kg of hydrogen.
作者
杨化震
丁志斌
孙楠楠
段翰林
于超
陶凡
王宝军
彭军
成效先
YANG Huazhen;DING Zhibin;SUN Nannan;DUAN Hanlin;YU Chao;TAO Fan;WANG Baojun;PENG Jun;CHENG Xiaoxian(State Key Laboratory of Engine and Powertrain System,Weifang Shandong 261000,China;Weichai Power Co.,Ltd.,Weifang Shandong 261000,China;SPIC Hubei Electric Power Co.,Ltd.,Wuhan Hubei 430000,China)
出处
《电源技术》
北大核心
2025年第11期2318-2325,共8页
Chinese Journal of Power Sources
关键词
固体氧化物燃料电池
掺氢天然气
性能仿真
碳排放
solid oxide fuel cell(SOFC)
hydrogen-blended natural gas
performance simulation
carbon emissions
