Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

An experimental study on the performance improvement of dead-end type PEMFC with pulsating effect

맥동 효과를 이용한 dead-end type 연료전지의 성능향상에 대한 실험적 연구

  • Choi, Jong-Won (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Seo, Jeong-Hoon (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Hwang, Yong-Sheen (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Lee, Dae-Heung (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Cha, Suk-Won (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Min-Soo (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 최종원 (서울대학교 기계항공공학부) ;
  • 서정훈 (서울대학교 기계항공공학부) ;
  • 황용신 (서울대학교 기계항공공학부) ;
  • 이대흥 (서울대학교 기계항공공학부) ;
  • 차석원 (서울대학교 기계항공공학부) ;
  • 김민수 (서울대학교 기계항공공학부)
  • Published : 2008.11.21
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Abstract

PEM Fuel Cell operation mode can be classified into dead-end mode or open mode by whether the outlet port is blocked or not. Generally, dead-end type fuel cell has some merits on the pressure drop and system efficiency because it can generate more power than the open type fuel cell due to high operating pressure condition. However, the periodic purging process should be done for removing water which is formed as product of a reaction in the gas diffusion layer. In this study, cathode side dead-end type operation has been conducted. Moreover, pulsating flow generator at the outlet of cathode side has been suggested for increasing the period to purge the formed water because the pulsating flow can make formed water scattered uniformly over the whole channel. As a result, the purging period with pulsation increased by 1.5-2 times longer than that without pulsating.

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