ISO 5136-1990 标准详情
- 标准号:ISO 5136-1990
- 中文标题:声学.由通风机辐射到导管的声功率测定,引入法
- 英文标题:acoustics; determination of sound power radiated into a duct by fans; in-duct method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1990-12-15
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 max
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