Acoustic performance of cooling towers on neighbor residential building and noise reduction methods

  • Abstract
  • Keywords
  • References
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  • Abstract

    The purpose of this research is to present an assessment of the noise impact of cooling equipment and determine if the noise levels comply with the permissible limits or not. Also, it presents two calculation methods to predict the acoustic performance of the cooling towers on a neighbor residential building. Comparison of the actual measurements vs. the predicted levels was carried out to select the appropriate calculation method to perform analysis for different noise reduction techniques and determines the best way to achieve the acceptable noise criteria. The results showed that the most effective methods for noise control are obtained by using variable frequency control for the cooling tower fans and lined plenum champers together or individual.


  • Keywords

    Cooling Towers; Outdoor Noise Propagation; Noise Criteria; Noise Reduction; Barrier; Variable Frequency Control.

  • References

      [1] E. Atmaca, I. Peker, A. Altin, Industrial Noise and Its Effects on Humans, Polish Journal of Environmental Studies, 14 No 6, 721-726 (2005)

      [2] E. Gerretsen, Prediction Model for Sound Transmission from Machinery in Buildings: Feasible Approaches and Problems To Be Solved, Applied Acoustics 40, 255-265 (1993).

      [3] L. Schreiber, Handbook of Engineering Acoustic: ch.6 Sound Propagation Outdoor, NewYork, 2013.

      [4] L. Sutherland, overview of outdoor sound propagation, internoise Nice, France ,2000.

      [5] ISO 9613 -2, Acoustic- Attenuation of sound during propagation outdoors part -2 general method for calculation, International standard, 1996.

      [6] B. Plovsing, Comprehensive outdoor sound propagation model. part 2: propagation in an atmosphere with refraction, Nord2000, 2006.

      [7] S. Kephalopoulos, M. Paviotti, & F. Anfosso-Lédée, Common noise assessment methods in Europe, CNOSSOS-EU, 2012.

      [8] Matthew Kamrathb, Philippe Jean, and Julien Maillard, Extending standard outdoor noise propagation models to complex geometries, Journal of the Acoustical Society of America 143, 4, 2018.

      [9] BAC Technical Resources, Series 3000 Layout Guideline, BAC Baltimore Air coil Company, www. Baltimore Air coil. com.

      [10] ASHRAE, Sound and Vibration control, Ashrae Handbook (HVAC Applications), New York, 1999.

      [11] A. Gannoruwa, Construction Nose Prediction and Barrier of Optimization Using Special Purpose Simulation", proceedings of the Winter Simulation Conference, 2007.

      [12] BAC Technical Resources. Fundamental of Sound Chapter 14, BAC Baltimore Air coil Company, www. Baltimore Air coil. Com.

      [13] Egyptian Environmental Affairs, Agency environmental low no 1095, Ministry of Environmental, 2011.

      [14] Georges Hoeterickx, Good cooling tower practices, 3rd International District Cooling, Conference Strategic Session #4", Dubai, 2008.




Article ID: 29778
DOI: 10.14419/ijet.v8i4.29778

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