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Research Papers

Parametric Analysis on Hybrid System of Solid Oxide Fuel Cell and Micro Gas Turbine With CO2 Capture

[+] Author and Article Information
Dengji Zhou

The Key Laboratory of Power Machinery
and Engineering of Education Ministry,
Shanghai Jiao Tong University,
Shanghai 200240, China
e-mail: ZhouDJ@sjtu.edu.cn

Jiaojiao Mei, Jinwei Chen

The Key Laboratory of Power Machinery
and Engineering of Education Ministry,
Shanghai Jiao Tong University,
Shanghai 200240, China

Huisheng Zhang, Shilie Weng

Gas Turbine Research Institute,
Shanghai Jiao Tong University,
Shanghai 200240, China

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received December 11, 2013; final manuscript received March 14, 2014; published online May 2, 2014. Assoc. Editor: Dr Masashi Mori.

J. Fuel Cell Sci. Technol 11(5), 051001 (May 02, 2014) (10 pages) Paper No: FC-13-1122; doi: 10.1115/1.4027393 History: Received December 11, 2013; Revised March 14, 2014

The solid oxide fuel cell–micro gas turbine hybrid system with CO2 capture seems to be a prospective system with high efficiency and low emissions. Three hybrid systems with/without CO2 capture are designed and simulated based on the IPSEPro simulation platform. The performance on the design point shows that case 2 is a better one, whose system efficiency is 59% and CO2 capture rate is 99%; thus, case 2 is suitable to build a quasi-zero carbon emission plant. However, case 3 is more suitable to rebuild an existing plant. Then the off-design point performance and the effect of the capture rate on the system performance of cases 2 and 3 are investigated. The suggested capture rate for cases 2 and 3 is given based on the result, taking both economic factors and carbon emissions into consideration.

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Figures

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Fig. 1

Case 1: process scheme of the hybrid system of the SOFC-MGT without CO2 capture

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Fig. 2

Case 2: process scheme of the hybrid system of the SOFC-MGT with precombustion CO2 capture

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Fig. 3

Case 3: process scheme of the hybrid system of the SOFC-MGT with postcombustion CO2 capture

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Fig. 4

Definition of the stage efficiency

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Fig. 5

Effect of the capture rate and current density on the system output in case 2

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Fig. 6

Effect of the capture rate and current density on the system efficiency in case 2

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Fig. 7

Effect of the capture rate and current density on the stack temperature in case 2

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Fig. 8

Effect of the capture rate and current density on the system output in case 3

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Fig. 9

Effect of the capture rate and current density on the system efficiency in case 3

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Fig. 10

Effect of the capture rate and current density on the stack temperature in case 3

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