Analysis of a biogas-fed SOFC CHP system based on multi-scale hierarchical modeling

Yuqing Wang; Lukas Wehrle; Aayan Banerjee; Yixiang Shi; Olaf Deutschmann

doi:10.1016/j.renene.2020.08.091

Analysis of a biogas-fed SOFC CHP system based on multi-scale hierarchical modeling

Yuqing Wang^*, Lukas Wehrle, Aayan Banerjee, Yixiang Shi, Olaf Deutschmann^*

^*Corresponding author for this work

School of Mechatronical Engineering

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

Biogas is an abundant renewable energy source which can be produced by anaerobic treatment of biological waste such as sewage sludge, agro-industrial waste, and industrial animal waste. The utilization of biogas instead of fossil fuels in a solid oxide fuel cell (SOFC)-based system is a promising choice to achieve a fossil-free and sustainable energy future. A biogas-fed decentralized SOFC combined heat and power (CHP) system model is proposed and analyzed. The system consists of a pre-reformer, an SOFC stack, an afterburner and a heat-recovery boiler. The system model integrates a multi-scale hierarchical three-dimensional SOFC stack model with zero-dimensional balance of power component models, which enables simultaneous investigations of both the overall system performance and the stack-internal distributed properties down to the electrode scale. The effects of steam/carbon ratio, biogas composition and operation voltage of the SOFC stack on the electrical and CHP efficiencies of the system, as well as the temperature gradient within the SOFC stack were studied. The proposed system model is demonstrated as an insightful and powerful tool for designing hybrid SOFC combined heat and power systems.

Original language	English
Pages (from-to)	78-87
Number of pages	10
Journal	Renewable Energy
Volume	163
DOIs	https://doi.org/10.1016/j.renene.2020.08.091
Publication status	Published - Jan 2021

Keywords

Biogas
Combined heat and power system
Hierarchical model
Solid oxide fuel cell

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.renene.2020.08.091

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title = "Analysis of a biogas-fed SOFC CHP system based on multi-scale hierarchical modeling",

abstract = "Biogas is an abundant renewable energy source which can be produced by anaerobic treatment of biological waste such as sewage sludge, agro-industrial waste, and industrial animal waste. The utilization of biogas instead of fossil fuels in a solid oxide fuel cell (SOFC)-based system is a promising choice to achieve a fossil-free and sustainable energy future. A biogas-fed decentralized SOFC combined heat and power (CHP) system model is proposed and analyzed. The system consists of a pre-reformer, an SOFC stack, an afterburner and a heat-recovery boiler. The system model integrates a multi-scale hierarchical three-dimensional SOFC stack model with zero-dimensional balance of power component models, which enables simultaneous investigations of both the overall system performance and the stack-internal distributed properties down to the electrode scale. The effects of steam/carbon ratio, biogas composition and operation voltage of the SOFC stack on the electrical and CHP efficiencies of the system, as well as the temperature gradient within the SOFC stack were studied. The proposed system model is demonstrated as an insightful and powerful tool for designing hybrid SOFC combined heat and power systems.",

keywords = "Biogas, Combined heat and power system, Hierarchical model, Solid oxide fuel cell",

author = "Yuqing Wang and Lukas Wehrle and Aayan Banerjee and Yixiang Shi and Olaf Deutschmann",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2021",

month = jan,

doi = "10.1016/j.renene.2020.08.091",

language = "English",

volume = "163",

pages = "78--87",

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T1 - Analysis of a biogas-fed SOFC CHP system based on multi-scale hierarchical modeling

AU - Wang, Yuqing

AU - Wehrle, Lukas

AU - Banerjee, Aayan

AU - Shi, Yixiang

AU - Deutschmann, Olaf

PY - 2021/1

Y1 - 2021/1

N2 - Biogas is an abundant renewable energy source which can be produced by anaerobic treatment of biological waste such as sewage sludge, agro-industrial waste, and industrial animal waste. The utilization of biogas instead of fossil fuels in a solid oxide fuel cell (SOFC)-based system is a promising choice to achieve a fossil-free and sustainable energy future. A biogas-fed decentralized SOFC combined heat and power (CHP) system model is proposed and analyzed. The system consists of a pre-reformer, an SOFC stack, an afterburner and a heat-recovery boiler. The system model integrates a multi-scale hierarchical three-dimensional SOFC stack model with zero-dimensional balance of power component models, which enables simultaneous investigations of both the overall system performance and the stack-internal distributed properties down to the electrode scale. The effects of steam/carbon ratio, biogas composition and operation voltage of the SOFC stack on the electrical and CHP efficiencies of the system, as well as the temperature gradient within the SOFC stack were studied. The proposed system model is demonstrated as an insightful and powerful tool for designing hybrid SOFC combined heat and power systems.

AB - Biogas is an abundant renewable energy source which can be produced by anaerobic treatment of biological waste such as sewage sludge, agro-industrial waste, and industrial animal waste. The utilization of biogas instead of fossil fuels in a solid oxide fuel cell (SOFC)-based system is a promising choice to achieve a fossil-free and sustainable energy future. A biogas-fed decentralized SOFC combined heat and power (CHP) system model is proposed and analyzed. The system consists of a pre-reformer, an SOFC stack, an afterburner and a heat-recovery boiler. The system model integrates a multi-scale hierarchical three-dimensional SOFC stack model with zero-dimensional balance of power component models, which enables simultaneous investigations of both the overall system performance and the stack-internal distributed properties down to the electrode scale. The effects of steam/carbon ratio, biogas composition and operation voltage of the SOFC stack on the electrical and CHP efficiencies of the system, as well as the temperature gradient within the SOFC stack were studied. The proposed system model is demonstrated as an insightful and powerful tool for designing hybrid SOFC combined heat and power systems.

KW - Biogas

KW - Combined heat and power system

KW - Hierarchical model

KW - Solid oxide fuel cell

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DO - 10.1016/j.renene.2020.08.091

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SP - 78

EP - 87

JO - Renewable Energy

JF - Renewable Energy

ER -

Analysis of a biogas-fed SOFC CHP system based on multi-scale hierarchical modeling

Abstract

Keywords

UN SDGs

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