Dynamic investigation of a novel SOFC-MHR-Engine hybrid energy conversion system

Zhen Wu; Pengfei Zhu; Jing Yao; Fusheng Yang; Meng Ni; Zaoxiao Zhang

doi:10.46855/energy-proceedings-2377

Dynamic investigation of a novel SOFC-MHR-Engine hybrid energy conversion system

Zhen Wu, Pengfei Zhu, Jing Yao, Fusheng Yang, Meng Ni, Zaoxiao Zhang

Research output: Journal article publication › Conference article › Academic research › peer-review

Abstract

A novel SOFC-MHR(metal hydride reactor)-Engine hybrid energy conversion system fueled with alternative fuels is proposed and modelled in this present study. The MHR is introduced into the hybrid system for H₂ addition by waste heat recovery. The dynamic modelling is performed to investigate the transient response of the proposed hybrid energy conversion system. The results show that the SOFC has a relatively slow dynamic behavior while the engine has the fast dynamic behavior. Besides, the SOFC dominates the transient responses of the hybrid system because that the engine fuel directly comes from the FC off-gas. Therefore, it is found that the addition of H₂ by MHR not only extends the system power output, but also improves the dynamics of the hybrid system due to the enhanced autonomy of the engine with fast transient response. When the H₂ addition is χ=2.0, the hybrid system can quickly reach the stable power output within 5 s, indicating that the hybrid system presents superior dynamic behaviors and is promising for mobile applications.

Original language	English
Journal	Energy Proceedings
Volume	3
DOIs	https://doi.org/10.46855/energy-proceedings-2377
Publication status	Published - Aug 2019
Event	11th International Conference on Applied Energy, ICAE 2019 - Västerås, Sweden Duration: 12 Aug 2019 → 15 Aug 2019

Keywords

dynamic modelling
engine
metal hydride reactor
SOFC

ASJC Scopus subject areas

Energy Engineering and Power Technology
Fuel Technology
Renewable Energy, Sustainability and the Environment
Energy (miscellaneous)

More information

10.46855/energy-proceedings-2377

Cite this

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title = "Dynamic investigation of a novel SOFC-MHR-Engine hybrid energy conversion system",

abstract = "A novel SOFC-MHR(metal hydride reactor)-Engine hybrid energy conversion system fueled with alternative fuels is proposed and modelled in this present study. The MHR is introduced into the hybrid system for H2 addition by waste heat recovery. The dynamic modelling is performed to investigate the transient response of the proposed hybrid energy conversion system. The results show that the SOFC has a relatively slow dynamic behavior while the engine has the fast dynamic behavior. Besides, the SOFC dominates the transient responses of the hybrid system because that the engine fuel directly comes from the FC off-gas. Therefore, it is found that the addition of H2 by MHR not only extends the system power output, but also improves the dynamics of the hybrid system due to the enhanced autonomy of the engine with fast transient response. When the H2 addition is χ=2.0, the hybrid system can quickly reach the stable power output within 5 s, indicating that the hybrid system presents superior dynamic behaviors and is promising for mobile applications.",

keywords = "dynamic modelling, engine, metal hydride reactor, SOFC",

author = "Zhen Wu and Pengfei Zhu and Jing Yao and Fusheng Yang and Meng Ni and Zaoxiao Zhang",

note = "Publisher Copyright: {\textcopyright} 2019 ICAE.; 11th International Conference on Applied Energy, ICAE 2019 ; Conference date: 12-08-2019 Through 15-08-2019",

year = "2019",

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doi = "10.46855/energy-proceedings-2377",

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AU - Wu, Zhen

AU - Zhu, Pengfei

AU - Yao, Jing

AU - Yang, Fusheng

AU - Ni, Meng

AU - Zhang, Zaoxiao

PY - 2019/8

Y1 - 2019/8

N2 - A novel SOFC-MHR(metal hydride reactor)-Engine hybrid energy conversion system fueled with alternative fuels is proposed and modelled in this present study. The MHR is introduced into the hybrid system for H2 addition by waste heat recovery. The dynamic modelling is performed to investigate the transient response of the proposed hybrid energy conversion system. The results show that the SOFC has a relatively slow dynamic behavior while the engine has the fast dynamic behavior. Besides, the SOFC dominates the transient responses of the hybrid system because that the engine fuel directly comes from the FC off-gas. Therefore, it is found that the addition of H2 by MHR not only extends the system power output, but also improves the dynamics of the hybrid system due to the enhanced autonomy of the engine with fast transient response. When the H2 addition is χ=2.0, the hybrid system can quickly reach the stable power output within 5 s, indicating that the hybrid system presents superior dynamic behaviors and is promising for mobile applications.

AB - A novel SOFC-MHR(metal hydride reactor)-Engine hybrid energy conversion system fueled with alternative fuels is proposed and modelled in this present study. The MHR is introduced into the hybrid system for H2 addition by waste heat recovery. The dynamic modelling is performed to investigate the transient response of the proposed hybrid energy conversion system. The results show that the SOFC has a relatively slow dynamic behavior while the engine has the fast dynamic behavior. Besides, the SOFC dominates the transient responses of the hybrid system because that the engine fuel directly comes from the FC off-gas. Therefore, it is found that the addition of H2 by MHR not only extends the system power output, but also improves the dynamics of the hybrid system due to the enhanced autonomy of the engine with fast transient response. When the H2 addition is χ=2.0, the hybrid system can quickly reach the stable power output within 5 s, indicating that the hybrid system presents superior dynamic behaviors and is promising for mobile applications.

KW - dynamic modelling

KW - engine

KW - metal hydride reactor

KW - SOFC

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U2 - 10.46855/energy-proceedings-2377

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T2 - 11th International Conference on Applied Energy, ICAE 2019

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ER -

Dynamic investigation of a novel SOFC-MHR-Engine hybrid energy conversion system

Abstract

Keywords

ASJC Scopus subject areas

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