Use

Determine the insertion loss due to a circular straight duct.

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User Inputs

  1. Dimenison (mm)—Duct diameter
  2. Length (m)
  3. Lining thickness (mm) (from 0mm, 25mm or 50mm thickness with 64 kg/m$^3$ density).

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SoundSurfer Input

Sound Power Level (red node) from an upstream source.

Algorithm

Insertion loss is based on ASHRAE 2019 HVAC Applications Chapter 49 Noise and Vibration Control Tables 19, 20, and 21.

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Refer to the full text of ASHRAE 2019 HVAC Applications Chapter 49 Noise and Vibration Control for full description of application.

Output