한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제19권2호
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  • Pages.56-62
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  • 2021
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  • 1598-8430(pISSN)
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  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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SOFC 셀 성능 향상 및 수명 저하 방지를 위한 입구와 출구 2개의 유로 설계

Design of flow path with 2 inlet and outlets to improve cell performance and prevent cell degradation in Solid Oxide Fuel Cell

  • Kim, Dongwoo (School of Mechanical Engineering, PNU) ;
  • Yeom, Eunseop (School of Mechanical Engineering, Pusan National University (PNU))
  • 투고 : 2021.07.26
  • 심사 : 2021.08.27
  • 발행 : 2021.08.31
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초록

Solid oxide fuel cells (SOFCs) is the high efficiency fuel cell operating at high temperatures ranging from 700-1000℃. Design of the flow paths of the fuel and air in SOFCs is important to improve cell performance and prevent cell degradation. However, the uneven distribution of current density in the traditional type having one inlet and outlet causes cell degradation. In this regard, the parallel flow path with two inlet and outlets was designed and compared to the traditional type based on computational fluid dynamics (CFD) simulation. To check the cell performance, hydrogen distribution, velocity distribution and current density distribution were monitored. The results validated that the parallel designs with two inlets and outlets have a higher cell performance compared to the traditional design with one inlet and outlet due to a larger reaction area. In case of uniform-type paths, more uniform current density distribution was observed with less cross-sectional variation in flow paths. In case of contracted and expanded inflow paths, significant improvement of performance and uniform current density was not observed compared to uniform parallel path. Considering SOFC cell with uniform current density can prevent cell degradation, more suitable design of SOFC cell with less cross-sectional variation in the flow path should be developed. This work can be helpful to understand the role of flow distribution in the SOFC performance.

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과제정보

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2020R1A5A8018822).

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