Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Performance Test and Evaluation of Ship Exhaust Muffler

선박용 소음기 성능 시험 및 평가

  • Published : 2008.12.20
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Abstract

A muffler design in the exhaust system is critical to provide fur low noise in shipboard spaces. In an attempt to effectively design the low noise muffler, it Is important to evaluate the performance of the muffler considering not only the noise, but also pressure drop as well. For this purpose, a test system of large exhaust mufflers fur ship propulsion systems was designed based on ISO 7235. The substitution test fur determining both the insertion loss and pressure drop of mufflers was carried out. A ship exhaust muffler is considered as a test example and the insertion loss and pressure drop were obtained.

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References

  1. Eom, J.-K. and Kim, S.-S., 2001, 'An Experimental Study on the Performance of Silencers for Exhaust Merchant Ships Considering Air Flow Velocity,' J. of the Soc. of Naval Architects of Korea, Vol. 38, No. 1, pp. 108-115
  2. Lee, D.-K., Jin, B.-M., Lee, C.-W., Kim, N.-S. and Choi, S.-H., 2005, 'A Study on Silencer Performance Assessment under Onboard Condition,' Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15, No. 2, pp. 176-183 https://doi.org/10.5050/KSNVN.2005.15.2.176
  3. Ih, J.-G., 1994, 'Acoustic Analysis and Design of Exhaust Mufflers : I. Operating Principles Associated with Structures,' Transactions of Korea Society of Automotive Engineers, Vol. 16, No. 4, pp. 37-50
  4. ISO 7235, 2003, 'Acoustics-laboratory Measurement Procedures for Ducted Silencers and Air-terminal Units-Insertion Loss, Flow Noise and Total Pressure Loss.'
  5. KS A ISO 5136, 2004, 'Determination of Sound Power Radiated Into a Duct by Fans-in-duct Method.'
  6. ISO 10534-2, 2003, 'Acoustics-determination of Sound Absorption Coefficient and Impedance in Impedance Tubes-Part 2: Transfer-function Method.'

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  1. An Experimental Study on Acoustic Performance of Splitter Silencers in Large Maritime Gas Turbine Engines vol.25, pp.7, 2015, https://doi.org/10.5050/KSNVE.2015.25.7.503