GB/T 17697-1999 in English
SUPERSEDEDAcoustics - Determination of sound power radiated into a duct by fans - In -duct method
- Issued on:1999-03-08
- Implemented on:1999-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$330.00
| Standard No: | GB/T 17697-1999 |
| Document status: | SUPERSEDED |
| Superseded by: |
GB/T 17697-2014 Acoustics―Determination of sound power radiated into a duct by fans and other air-moving devices―In-duct method
|
| Superseded on: | 2015-02-01 |
| Title in English: | Acoustics - Determination of sound power radiated into a duct by fans - In -duct method |
| Title in Chinese: | 声学 风机辐射入管道的声功率测定 管道法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 1999-03-08 |
| Implemented on: | 1999-09-01 |
| ICS Classification: | 91.120.20-Acoustics in building. Sound insulation. |
| Chinese Classification: | A59-Acoustic Measurement |
| Professional Classification: | GB-National Standard |
| Related Keywords: | sound power
-duct method scopethis standard measurement method sound method |
| Related Topics: | power pipeline
GB/t+17697 Channel radiation detection GBT17697 GB/T 17697-1999 Duct fan General purpose underwater radiated sound power measurement |
《GB/T 17697-1999声学 风机辐射入管道的声功率测定 管道法》由TC17（全国声学标准化技术委员会）归口，主管部门为中国科学院。
本标准规定了风机辐射入管道的声功率的测量方法。用此种方法测量风机进口和/或出口端辐射入带有消声末端的管道的声功率。本标准适用于辐射稳态宽、窄带和离散频率噪声的风机。
Scope
This standard specifies the measurement method of the sound power radiated into the duct by the fan. This method measures the sound power radiated by the fan inlet and/or outlet into ducts with anechoic ends. This standard applies to fans that radiate steady-state wide, narrow-band and discrete-frequency noise. The measuring air temperature range is -50℃～+70℃. The test pipe diameter ranges from 0.15 to 2m. The maximum flow velocity is allowed to be 30m/s, and the maximum air swirl angle is 15°. The center frequency range of 1/3 octave frequency is 50～10000Hz. Note: At high flow rates and atmospheric swirl angles, the airflow noise of the sampling pipe will have adverse effects on the measurement. Refer to Appendix F for the determination of the airflow swirl angle.
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