摘要
建立由固体氧化物燃料电池(SOFC)、回热器、热辐射电池(TRC)组成的耦合系统模型。综合考虑SOFC的电流密度和TRC的电压对系统输出功率密度和效率的影响。推导出SOFC、TRC及其耦合系统输出功率和效率的公式。当给定面积比时,分析输出功率密度和效率关于电流密度的变化规律。随后对带隙能进行优化,确定系统的工作电流区间。针对系统对输出功率密度和效率的不同需求,通过引入多目标优化函数,分别给出相应的输出功率密度和效率的优化区间。结果表明,TRC能有效回收SOFC产生的余热热能,SOFC-TRC耦合系统比单独的SOFC具有更高的功率和效率。
A coupled system model consisted of solid oxide fuel cell(SOFC),regenerator and thermoradiative cell(TRC)is established.The effects of current density of SOFC and voltage of TRC on output power density and efficiency of the system are considered comprehensively.The expresses of the output power and efficiency of SOFC,TRC and their coupled system are derived.Given an area ratio,the variation of output power density and efficiency with respect to current density is presented.Then,the bandgap energy is optimized to determine the operating current range of the system.According to the different requirements of the system for output power density and efficiency,multi-objective optimization function is introduced to obtain the corresponding optimization intervals of output power density and efficiency,respectively.The results show that the TRC can effectively recover the waste heat generated by SOFC,and the SOFC-TRC coupled system has higher power and efficiency than that of the single SOFC.
作者
涂超
黄跃武
Tu Chao;Huang Yuewu(College of Environment Science and Engineering,Donghua University,Shanghai 201620,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2021年第10期355-360,共6页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51078068)。
关键词
固体氧化物燃料电池
热辐射电池
耦合系统
多目标优化
余热回收
solid oxide fuel cell
thermoradiative cell
coupled system
multi-objective optimization
waste heat recovery
