Evaluation of an Energy Separation Device for the Efficiency Improvement of a Planar Solid Oxide Fuel Cell System with an External Reformer

Jinwon Yun, Eun-Jung Choi, Sangmin Lee (), Younghyeon Kim and Sangseok Yu ()
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Jinwon Yun: Department of Hydrogen System Engineering, Youngsan University, Yangsan-si 50510, Republic of Korea
Eun-Jung Choi: Department of Zero-Carbo Fuel & Power Generation, Korea Institute of Machinery and Materials, Daejeon 34103, Republic of Korea
Sangmin Lee: Department of Zero-Carbo Fuel & Power Generation, Korea Institute of Machinery and Materials, Daejeon 34103, Republic of Korea
Younghyeon Kim: Department of Mechanical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
Sangseok Yu: Department of Mechanical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea

Energies, 2023, vol. 16, issue 9, 1-14

Abstract: Due to the high operating temperature of solid oxide fuel cells (SOFC), the system efficiency depends on efficient thermal integration and the effective construction of system configuration. In this study, nine configurations of system integration design were investigated to evaluate the possible improvement of system efficiency with energy separation devices. The models were developed under the Matlab/Simulink ® platform with Thermolib ® module. The reference layout of the simulation included an SOFC stack, a compressor, an external reformer with a burner, a three-way valve, a heat exchanger, and a water pump. From the reference case, eight cases extended layouts for the capability of thermal energy utilization with a catalytic converter, SOFC hybridization, and an energy separation device. Since the energy separation device was beneficial to thermal energy utilization via a boost to the gas temperature, electric efficiency, and combined heat and power (CHP) efficiency was improved with the thermal integration of the energy separation device with a turbo generator.

Keywords: solid oxide fuel cell; energy separation device; electric efficiency; CHP efficiency (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: 2023
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