首页|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

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

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
固体氧化物燃料电池(solid oxide fuel cell,SOFC)与余热回收相结合可进一步提高系统能量转换效率.该文设计一种 SOFC 与分部加热式超临界二氧化碳(partial heating supercritical CO2 Brayton cycle,PHSCBC)动力循环集成系统,SOFC 系统的出口废气作为高温热源,驱动 PHSCBC进行联合发电.建立系统的电化学模型和热力学模型,对系统的能量和㶲进行综合评价,并通过参数分析,研究汽碳比、燃料流量、压缩机进口温度和压力以及夹点温差对联合发电系统性能的影响.对系统性能进行优化,发现当系统燃料流量为0.54 mol/s、空气流量为6.19 mol/s,可达到净发电功率、发电效率、㶲效率分别为260.08 kW、61.20%、56.54%,其中提高燃料流量将显著提高系统发电效率.所提出的混合系统具有高效、低成本和清洁的发电和供热性能,是一种具有实际应用前景的先进能量转换技术.
Design and Analysis of Solid Oxide Fuel Cell and Partial Heating S-CO2 Combined Power Generation System
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.

solid oxide fuel cellpartial heating supercritical CO2 Brayton cyclecombined power generationwaste heat recoveryperformance optimization

马悦、王哲、曹梦龙、姜悦茂、纪玉龙、韩凤翚

展开 >

大连海事大学轮机工程学院,辽宁省 大连市 116000

叶轮机械研究所(西安交通大学能源与动力工程学院),陕西省 西安市 710049

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

国家重点研发计划项目中央高校基本科研业务费专项资金项目

2023YFB43017053132024216

2024

10.13334/j.0258-8013.pcsee.231116

中国电机工程学报
中国电机工程学会

中国电机工程学报

CSTPCD北大核心
影响因子：2.712
ISSN：0258-8013
年,卷(期)：2024.44(19)
  • 6