Title(Kor) 1 kW 고체산화물 연료전지 스택의 내부개질 특성 연구
Title(Eng) Study on Internal Reforming Characteristic of 1 kW Solid Oxide Fuel Cell Stack
Keyword Solid oxide fuel cell(고체산화물 연료전지), Anode supported planar cell(연료극 지지체 평판형 셀), Stack(스택), Internal reforming(내부개질), Fuel utilization(연료이용률)
Author(Kor) 최영재1,†⋅안진수1⋅이인성2⋅배홍열1⋅문지웅1⋅이종규3
Author(Eng) YOUNGJAE CHOI1,†, JINSOO AHN1, INSUNG LEE2, HONGYOUL BAE1, JIWOONG MOON1, JONGGYU LEE3
Date 2017-08
Attach file 08-17-07-10(최영재) 377.pdf
Page Page. 377~383
Abstract(Kor)
Abstract(Eng)
This paper presents the performance characteristics of a 1 kW solid oxide fuel cell (SOFC) stack under various internal reforming and fuel utilization conditions. The Research Institute of Industrial Science & Technology (RIST) developed the 9-cell stack using a 20×20 cm2 anode supported planar cell with an active area of 324 cm2. In this work, current-voltage characteristic test, fuel utilization test, continuous operation, and internal reforming test were carried out sequentially for 765 hours at a furnace temperature of 700℃. The influence of fuel utilization and internal reforming on the stack performance was analyzed. When the 1 kW stack was tested at a current of 145.8 A with a corresponding fuel utilization of 50-70% (internal reforming of 50%) and air utilization of 27%, the stack power was approximately 1.062-1.079 kW. Under continuous operation conditions, performance degradation rate was 2.16%/kh for 664 hours. The internal reforming characteristics of the stack were measured at a current of 145.8. A with a corresponding fuel utilization of 60-75%(internal reforming of 50-80%) and air utilization of 27%. As fuel utilization and internal reforming ratio increased, the stack power was decreased. The stack power change due to the internal reforming ratio difference was decreased with increasing fuel utilization.



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