The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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Characteristics of Leakage Flow on Regenerative Blower and Leakage-reducing Design for Performance Enhancement

재생형 블로워의 누설유동 특성과 누설유량 저감을 통한 성능 향상

  • 최민호 (서울대학교 대학원 기계항공공학부) ;
  • 김영훈 (서울대학교 대학원 기계항공공학부) ;
  • 강신형 (서울대학교 기계항공공학부)
  • Received : 2010.10.08
  • Accepted : 2011.02.21
  • Published : 2011.08.01
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Abstract

Regenerative blower is suitable for hydrogen recirculation in fuel cell vehicle due to its capability of high pressure rise in single stage. Numerical models were applied to investigate inner gap leakage flow characteristics. A leakage flow in the inner gap is dominantly affected by pressure gradient. Therefore a blower with concentric channel type was suggested as one of modified models for reducing the inner gap pressure gradient. Also numerical results such as pressure rise, efficiency, leakage flow rate and torque were compared between modified and reference models. The performance of concentric channel type was improved as a result of reduced leakage flow.

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References

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