Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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A Study on the Worst Stress Condition Test Evaluation of Blowers for Small Stationary Fuel Cell System

소용량 건물용 연료전지시스템 블로워의 가혹조건 평가에 관한 연구

  • Kim, Kangsoo (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Lee, Deokkwon (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Lee, Jungwoon (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Kim, Eunjung (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Kim, Inchan (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Kim, Younggyu (Institute of Gas Safety R&D, Korea Gas Safety Corporation) ;
  • Shin, Hunyong (Dept. of Chemical Engineering, Seoul National University of Science & Technology)
  • 김강수 (한국가스안전공사 가스안전연구원) ;
  • 이덕권 (한국가스안전공사 가스안전연구원) ;
  • 이정운 (한국가스안전공사 가스안전연구원) ;
  • 김은정 (한국가스안전공사 가스안전연구원) ;
  • 김인찬 (한국가스안전공사 가스안전연구원) ;
  • 김영규 (한국가스안전공사 가스안전연구원) ;
  • 신헌용 (서울과학기술대학교 화학공학과)
  • Received : 2012.11.26
  • Accepted : 2012.12.24
  • Published : 2012.12.31
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Abstract

The fuel cell is one of the renewable energy sources. And it is a new source of energy that can be applied to various fuels and continuously supported by the excellent city-gas infrastructure. It is important to improve performances and reliabilities, and reduce the cost of fuel cell systems for commercialization. And, some safety performances of blower domestically produced are evaluated and some improvements are researched to save the cost of fuel cell systems. In this paper, the performance and worst stress condition of blowers are evaluated in operating environment similar to the fuel cell systems. Actually, the correlation of flow, leakage and thermal behavior are evaluated in the worst stress condition at $70^{\circ}C$ and, some major factors of blower degradation such as a motor deterioration, material and structures of the outlet are examined.

연료전지는 우수한 도시가스 인프라로 안정적인 에너지공급이 가능하고, 연료 다변화가 가능한 신에너지 기술이다. 연료전지 상용화를 위해 시스템의 성능 및 신뢰성뿐만 아니라, 가격의 저감이 필수적이다. 소용량 건물용 연료전지시스템에서 가격비중이 매우 높은 보조기기의 가격저감 연구의 일환으로, 국내 제작된 블로워의 안전성능을 평가하고 개선방향을 모색하고자 하였다. 본 연구에서는 실제 연료전지시스템의 작동환경과 가장 유사한 환경에서 블로워의 성능 및 가혹조건 평가를 수행하였다. 블로워를 $70^{\circ}C$ 온도조건에서 장기 가동 시 유량성능, 기밀성능 및 열적거동의 상관관계를 파악하여, 블로워의 성능 저하에 영향을 미치는 모터열화, 다이어프램 재질 및 토출구 구조 등의 주요인자를 도출하였다.

Keywords

References

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