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

Hongyu Huang, Jun Li, Zhaohong He, Tao Zeng, Noriyuki Kobayashi and Mitsuhiro Kubota
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Hongyu Huang: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
Jun Li: Department of Chemical Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan
Zhaohong He: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
Tao Zeng: Department of Chemical Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan
Noriyuki Kobayashi: Department of Chemical Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan
Mitsuhiro Kubota: Department of Chemical Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan

Energies, 2015, vol. 8, issue 6, 1-17

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 Nm 3 ·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.

Keywords: biogas and city gas; bi-fueled; molten carbonate fuel cell; micro gas turbine; hybrid system; micro-grid network (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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