中国电机工程学报2024，Vol.44Issue(19)：7706-7716,中插18,12.DOI:10.13334/j.0258-8013.pcsee.231116
固体氧化物燃料电池和分部加热式S-CO2循环联合发电系统设计与分析
Design and Analysis of Solid Oxide Fuel Cell and Partial Heating S-CO2 Combined Power Generation System
摘要
Abstract
The combination of solid oxide fuel cell(SOFC)and waste heat recovery technology can further improve the energy conversion efficiency of the system.In this study,a hybrid system combining SOFCs with a partial heating supercritical CO2 Brayton cycle(PHSCBC)is designed,where the exhaust gas from the SOFC system serves as a high-temperature heat source to drive the PHSCBC for co-generation.Electrochemical and thermodynamic models are established to comprehensively evaluate the energy and exergy of the integrated system.Through parameter analysis,the impact of the steam-to-carbon ratio,fuel flow rate,compressor inlet temperature and pressure,and pinch point temperature difference on the performance of the co-generation system is investigated.The system performance is optimized,and it is found that with a fuel flow rate of 0.54 mol/s and an air flow rate of 6.19 mol/s,the net power output,electrical efficiency,and exergy efficiency can reach 260.08 kW,61.20%,and 56.54%,respectively.Increasing the fuel flow rate has proven beneficial in significantly enhancing the system's electrical efficiency.The proposed hybrid system demonstrates efficient,cost-effective,and clean co-generation capabilities,making it a promising advanced energy conversion technology with practical application prospects.关键词
固体氧化物燃料电池/分部加热式S-CO2动力循环/联合发电/余热回收/性能优化Key words
solid oxide fuel cell/partial heating supercritical CO2 Brayton cycle/combined power generation/waste heat recovery/performance optimization分类
能源科技引用本文复制引用
马悦,王哲,曹梦龙,姜悦茂,纪玉龙,韩凤翚..固体氧化物燃料电池和分部加热式S-CO2循环联合发电系统设计与分析[J].中国电机工程学报,2024,44(19):7706-7716,中插18,12.基金项目
国家重点研发计划项目(2023YFB4301705) （2023YFB4301705）
中央高校基本科研业务费专项资金项目(3132024216). National Key R&D Program of China(2023YFB4301705) （3132024216）
The Fundamental Research Funds for the Central Universities(3132024216). （3132024216）
