A Practical Guide to Noise and Vibration Control for HVAC by Mark E. Schaffer

By Mark E. Schaffer

A consultant that provides principles for controlling the noise and vibration of HVAC platforms.

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Extra info for A Practical Guide to Noise and Vibration Control for HVAC Systems

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11 © 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE's prior written permission. General Design Guidelines Section views through two types of floating floor assemblies. Figure 1-9 Sound transmission at perimeter mechanical rooms. --``,,`,``,```,,`,,```````,,`,,,-`-`,,`,,`,`,,`--- Figure 1-8 12 © 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.

29 © 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE's prior written permission. --``,,`,``,```,,`,,```````,,`,,,-`-`,,`,,`,`,,`--- Airside Equipment Sketches courtesty of the Greenheck Fan Corporation. Figure 2-4 Inline fan airflow patterns. 30 © 2011 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.

A Practical Guide to Noise and Vibration Control for HVAC Systems Figure 1-14 Typical duct silencer arrangement at vane-axial fan. Additional Guidelines for All Above-Grade Equipment Rooms: 1. Do not locate the equipment adjacent to a noise-sensitive area. For example, don’t place the equipment at the roof perimeter where sound can refract around the edge of the building and enter through the perimeter glass (see Figure 1-16). 2. If the equipment must be over a noise-sensitive area, then the equipment room floor construction and the interior ceiling assembly, if any, must provide adequate sound isolation.

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