Dynamic modelling and sensitivity analysis of a tubular SOFC fuelled with NH3 as a possible replacement for H2

S.A. Hajimolana; M.A. Hussain; W.M.A. Wan Daud

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Dynamic modelling and sensitivity analysis of a tubular SOFC fuelled with NH3 as a possible replacement for H2

机译：动态建模和灵敏度分析管式固体氧化物燃料电池燃料与NH3成为可能替代H2

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A dynamic model of an ammonia fed-tubular solid oxide fuel cell (NH3-SOFC) is developed and presented. The model accounts for diffusion, inherent impedance, transport (heat and mass transfer), electrochemical reactions, activation and concentration polarizations of electrodes and the ammonia decomposition reaction. Sensitivity analyses are conducted upon the effects of design parameters on the fuel cell performance. Dynamic output voltage, fuel-cell-tube temperature and efficiency responses to step changes in the inlet fuel flow pressure with different values of design parameters are discussed. It is found that among the studied parameters, the inner cell tube diameter has the strongest effect on fuel cell efficiency. On the other hand, the influence of cathodic porosity on fuel cell performance and transient response is higher than that of the anodic porosity. The transient response with different sizes of micro and macro-structures is studied and it is observed that changing the fuel cell length has the most effect. Also NH3-SOFC is compared with H2-SOFC and it is found that the performance of the former is close to that of the latter thus signifying that ammonia is a suitable fuel for substituting in place of hydrogen.

机译：氨的动态模型fed-tubular固体氧化物燃料电池(NH3-SOFC)是发达国家和提出了。固有阻抗、运输(热量和质量转移),电化学反应,激活和浓度极化电极和氨分解反应。进行分析对设计的影响参数对燃料电池的性能。fuel-cell-tube温度和输出电压反应步骤改变进气效率燃料流量压力的不同的值设计参数进行了讨论。在研究参数,内细胞管直径对燃料电池有最强的影响效率。阴极孔隙度对燃料电池性能瞬态响应比的高阳极孔隙度。不同大小的微观和宏观结构研究和观察,改变燃料细胞长度最多的效果。相比H2-SOFC和发现前的性能接近的后者表示氨是一个合适的替代燃料的氢。

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《Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers》 |2012年第11期|1871-1882|共12页
作者
S.A. Hajimolana; M.A. Hussain; W.M.A. Wan Daud;
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作者单位

Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;

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原文格式 PDF
正文语种英语
中图分类国际共产主义运动;
关键词
Hydrogen; design parameter; TRANSIENT RESPONSEHydrogen fuelsFuelingSensitivity analysisdynamic modelsammoniaFuel Cell Efficiencyfuel batteriesthermal efficiency;

机译：氢;设计参数;瞬态RESPONSEHydrogen fuelsFuelingSensitivityanalysisdynamic modelsammoniaFuel细胞Efficiencyfuel batteriesthermal效率;

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Dynamic modelling and sensitivity analysis of a tubular SOFC fuelled with NH3 as a possible replacement for H2

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