ISO 5136:1990 PDF
Acoustics — Determination of sound power radiated into a duct by fans — In-duct method
Title (English):
ISO 5136:1990
Acoustics — Determination of sound power radiated into a duct by fans — In-duct method
- Document status:
- Withdrawn
- Format:
- Electronic (PDF)
- Number of pages:
- 22
- Publication date:
- December 6, 1990
- Edition:
- ISO IS 5136 edition 1 version 1
- ICS:
- 91.120.20
Description (English):
Gives a method for testing ducted fans. Applies to fans which emit steady, broadband, narrow-band and discrete-frequency sound. Applies to air temperatures between -50 °C and +70 °C. The test duct diameter range is from 0,15 m to 2 m. The maximum flow velocity is 30 m/s and the maximum swirl angle is 15°. An example of a method for determining the angle of swirl is given in annex F. The one-third octave band centre frequency range is from 50 Hz to 10 000 Hz.
Technical details
- Technical committee
- ISO/TC 43/SC 1 - Noise
- SKU
- ISO 5136:1990
