MEBS7014 Advanced HVAC applications

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Noise and Vibration Control II

1. Design guidelines

2. Fan systems

3. Ductwork noise

4. Terminal units

[Download PowerPoint file in PDF format]

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Videos:

• Sources of HVAC Sound and How to Control Noise (14:24) https://youtu.be/SzwjQQvlvqE
  
• 001 visualising noise control - fan design (16:13) https://youtu.be/8ZrNszFkQ1A
  
• Webinar Recording: Vibration Isolation for Mechanical Systems (20:41) https://youtu.be/MCBnZ83C75A
  
• HVAC Training - Terminal Silencers (26:13) https://youtu.be/naacRiAF23c
  

Further Reading:

• HVAC Systems Noise Control https://www.cedengineering.com/userfiles/HVAC%20Systems%20Noise%20Control.pdf
  
• Section - 3 Noise Descriptors
  
• Section - 4 Controlling HVAC Noise and Vibration
• Attenuator Selection Procedure (example) https://www.fantech.com.au/images/PDF/Catalogue/attenuatorselection.pdf
• Do's and Don'ts - Design & Installation (fans) https://www.fantech.com.au/Content.aspx?ContentID=L5
  
• Noise control - installation do's and don'ts https://www.fantech.com.au/images/PDF/Catalogue/noisedad.pdf
• Vibration isolation - installation do's and don'ts https://www.fantech.com.au/images/PDF/Catalogue/vibrationdad.pdf
• Sound & Sense: Noise Analysis (TROX) https://www.trox.de/downloads/2ec6fe4591b4e4da/6_0_sound-and-sense.pdf
  
• - Examples of roomside and atmospheric side calculations
• Ventilation Systems - Acoustic Calculation Procedure https://www.engineeringtoolbox.com/accoustic-calculation-ventilation-d_70.html
  

References:

• ASHRAE, 2019. ASHRAE HVAC Applications Handbook 2020, SI edition, Chp. 49 Sound and Vibration Control, American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Atlanta, GA. [HKALL]
• CIBSE, 2016. Noise and Vibration Control for Building Services Systems, CIBSE Guide B4: 2016, Chartered Institution of Building Services Engineers (CIBSE), London. [HKALL]
  
• Crocker M. J. & Arenas J. P., 2021. Engineering Acoustics: Noise and Vibration Control, Wiley, Hoboken, NJ. https://doi.org/10.1002/9781118693902
• Ling M. K., 2001. Acoustics and Ventilation, AIVC Technical Note 52, Air Infiltration and Ventilation Centre (AIVC), Coventry, Great Britain. https://www.aivc.org/sites/default/files/members_area/medias/pdf/Technotes/TN52%20ACOUSTICS%20AND%20VENTILATION.pdf
  
• Noise Control Engineering Guide (Price Industries) https://www.priceindustries.com/content/uploads/assets/literature/engineering-guides/silencers-panels-engineering-guide.pdf
• Schaffer M. E., 2011. A Practical Guide to Noise and Vibration Control for HVAC Systems, 2nd Edition (SI), American Society of Heating Refrigerating and Air-Conditioning Engineers (ASHRAE), Atlanta, GA. [HKALL]
  

Web Links:

• Noise Control: Part 4 – Reducing HVAC Noise Issues http://www.heinenhopman.com/noise-control-part-4-reduce-hvac-noise-issues
  
• Isolation of Noise & Vibration in HVAC & Plumbing Piping Systems https://www.pumpsandsystems.com/isolation-noise-vibration-hvac-plumbing-piping-systems
  
• Determine HVAC Noise Sources to Improve Acoustics https://www.mazza-hvac.com/news/news-story/determine-hvac-noise-sources-to-improve-acoustics
  
• Treating Mechanical Noise https://commercial-acoustics.com/treating-mechanical-noise
  
• Noise - Control Measures https://www.ccohs.ca/oshanswers/phys_agents/noise_control.html

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| Created: Jan 2023 | Update: 25 Apr 2023 |