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Energies 2015, 8(6), 5661-5677; doi:10.3390/en8065661

Performance Analysis of a MCFC/MGT Hybrid Power System Bi-Fueled by City Gas and Biogas

1
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
2
Department of Chemical Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Haolin Tang
Received: 27 March 2015 / Accepted: 1 June 2015 / Published: 15 June 2015
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Abstract

This study evaluates the performance of a molten carbonate fuel cell and micro gas turbine (MCFC/MGT) hybrid power system bi-fueled by city gas and biogas. The performance of the MCFC/MGT hybrid power system and MFCF/MGT hybrid power system response have been investigated experimentally and numerically. Results show that the MCFC, steam reformer, and catalytic combustor models are in agreement with the experimental results of the system fueled by city gas only and the system bi-fueled by city gas and biogas. The MFCF/MGT hybrid power system can have manifest operation with the addition of biogas at a flow rate of up to 150.0 Nm3·h−1, which is about 50% of the overall input heat value. In addition, the MCFC and MGT outputs decrease with the increase in the flow rate of added biogas, with an overall power generation efficiency ranging from 39.0% to 42.0%. Furthermore, the MCFC/MGT hybrid power system can be operated stably both at low amplitude with slow current change and large amplitude with rapid power conditions. Finally, the MCFC/MGT hybrid system bi-fueled by city gas and biogas may be applicable to the energy supply of the micro–grid network. View Full-Text
Keywords: biogas and city gas; bi-fueled; molten carbonate fuel cell; micro gas turbine; hybrid system; micro-grid network biogas and city gas; bi-fueled; molten carbonate fuel cell; micro gas turbine; hybrid system; micro-grid network
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Huang, H.; Li, J.; He, Z.; Zeng, T.; Kobayashi, N.; Kubota, M. Performance Analysis of a MCFC/MGT Hybrid Power System Bi-Fueled by City Gas and Biogas. Energies 2015, 8, 5661-5677.

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