Evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions

An anode gas recycle (AGR) system that uses an ejector for a 1 kW solid oxide fuel cell (SOFC) was developed to increase the electrical efficiency of combined power generation. The effects of anodic recirculation on the SOFC performance were determined experimentally with a variable flow ejector at...

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Autores principales:	Soumei BABA, Sanyo TAKAHASHI, Nariyoshi KOBAYASHI, Satoshi HIRANO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2015
Materias:	fuel cell solid oxide fuel cell anode gas recycle ejector Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/b83c150070a3481e82e3a68d6944ce2e
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spelling	oai:doaj.org-article:b83c150070a3481e82e3a68d6944ce2e2021-11-26T06:27:48ZEvaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions2187-974510.1299/mej.15-00087https://doaj.org/article/b83c150070a3481e82e3a68d6944ce2e2015-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/4/2_15-00087/_pdf/-char/enhttps://doaj.org/toc/2187-9745An anode gas recycle (AGR) system that uses an ejector for a 1 kW solid oxide fuel cell (SOFC) was developed to increase the electrical efficiency of combined power generation. The effects of anodic recirculation on the SOFC performance were determined experimentally with a variable flow ejector at a fuel utilization of 0.80 to 0.87 and a steam feed rate of 0 to 1.5 g/min. A quadrupole mass spectrometer was used to identify the recirculation ratio, the gas composition of reformed gas at the SOFC inlet, and that of the recycle gas at the recycle plenum located downstream of the SOFC. The recirculation ratio could be changed from 0.67 to 0.71 by moving the needle inside the ejector nozzle, and thus the SOFC showed stable performance with no steam supply, due to the large recirculation ratio of steam produced via the electrochemical reaction that was supplied to the injected fuel for the steam reforming process. The results indicate a slight decline in output power with an increase in the recirculation ratio. In addition, the fuel utilization limitation for SOFC operation is estimated to be as much as that for a one-path SOFC system without AGR to avoid a local lack of hydrogen as fuel.Soumei BABASanyo TAKAHASHINariyoshi KOBAYASHISatoshi HIRANOThe Japan Society of Mechanical Engineersarticlefuel cellsolid oxide fuel cellanode gas recycleejectorMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 4, Pp 15-00087-15-00087 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	fuel cell solid oxide fuel cell anode gas recycle ejector Mechanical engineering and machinery TJ1-1570
spellingShingle	fuel cell solid oxide fuel cell anode gas recycle ejector Mechanical engineering and machinery TJ1-1570 Soumei BABA Sanyo TAKAHASHI Nariyoshi KOBAYASHI Satoshi HIRANO Evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions
description	An anode gas recycle (AGR) system that uses an ejector for a 1 kW solid oxide fuel cell (SOFC) was developed to increase the electrical efficiency of combined power generation. The effects of anodic recirculation on the SOFC performance were determined experimentally with a variable flow ejector at a fuel utilization of 0.80 to 0.87 and a steam feed rate of 0 to 1.5 g/min. A quadrupole mass spectrometer was used to identify the recirculation ratio, the gas composition of reformed gas at the SOFC inlet, and that of the recycle gas at the recycle plenum located downstream of the SOFC. The recirculation ratio could be changed from 0.67 to 0.71 by moving the needle inside the ejector nozzle, and thus the SOFC showed stable performance with no steam supply, due to the large recirculation ratio of steam produced via the electrochemical reaction that was supplied to the injected fuel for the steam reforming process. The results indicate a slight decline in output power with an increase in the recirculation ratio. In addition, the fuel utilization limitation for SOFC operation is estimated to be as much as that for a one-path SOFC system without AGR to avoid a local lack of hydrogen as fuel.
format	article
author	Soumei BABA Sanyo TAKAHASHI Nariyoshi KOBAYASHI Satoshi HIRANO
author_facet	Soumei BABA Sanyo TAKAHASHI Nariyoshi KOBAYASHI Satoshi HIRANO
author_sort	Soumei BABA
title	Evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions
title_short	Evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions
title_full	Evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions
title_fullStr	Evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions
title_full_unstemmed	Evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions
title_sort	evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions
publisher	The Japan Society of Mechanical Engineers
publishDate	2015
url	https://doaj.org/article/b83c150070a3481e82e3a68d6944ce2e
work_keys_str_mv	AT soumeibaba evaluationofsolidoxidefuelcellperformancewithanoderecirculationusingvariableflowejectoratratedconditions AT sanyotakahashi evaluationofsolidoxidefuelcellperformancewithanoderecirculationusingvariableflowejectoratratedconditions AT nariyoshikobayashi evaluationofsolidoxidefuelcellperformancewithanoderecirculationusingvariableflowejectoratratedconditions AT satoshihirano evaluationofsolidoxidefuelcellperformancewithanoderecirculationusingvariableflowejectoratratedconditions
_version_	1718409804210241536

Evaluation of solid oxide fuel cell performance with anode recirculation using variable flow ejector at rated conditions

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