한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)

한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
권호 표지

다공판이 내장된 반사형 소음기의 소음저감 성능

Noise Reduction Performance of a Reactive type Silencer with Perforated Panels

  • 이선기 (서울산업대학교 에너지환경대학원 나노아이티공학과) ;
  • 이영철 (서울산업대학교 에너지환경대학원 나노아이티공학과) ;
  • 송화영 (서울산업대학교 에너지환경대학원 에너지시스템공학과) ;
  • 이동훈 (서울산업대학교 기계공학과/ 에너지환경대학원)
  • 발행 : 2007.11.15
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초록

When a high voltage COS fuse becomes a short circuit by the over current, the impulse noise over 150 dB(A) with the strong pulse jet is radiated from the COS fuse of an electric transformer. For the purpose of the impulse noise reduction, in this study, a reactive type silencer with perforated panels are considered. The transmission loss of the silencer are calculated by transfer matrix method. The effect of the porosity, the distance between panels, and the number of perforated panel on the sound transmission loss is investigated and discussed.

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