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ASHRAE 68
Laboratory Method of Testing to Determine the Sound Power in a Duct - AMCA 330-97
Year: 1997
Abstract: This standard applies to steady, broad-band, narrow band. and/or discrete frequency sound at air temperatures between −50°C and +70°C. The test duct diameter range is from 150 mm to 2 m. The maximum flow velocity in the duct is 30 m/s and the maximum swirl angle is 15°. The frequency range is from 50 Hz to 10.000 Hz.
This standard applies to sound sources connected to a duct. Examples of equipment covered by this standard are:
(a) centrifugal fans,
(b) axial-flow fans,
(c) mixed-flow fans,
(d) air-handling units,
(e) unitary equipment,
(f) furnaces,
(g) dampers, and
(h) throttling devices.
This standard does not apply to non-ducted equipment.
This standard applies to sound sources connected to a duct. Examples of equipment covered by this standard are:
(a) centrifugal fans,
(b) axial-flow fans,
(c) mixed-flow fans,
(d) air-handling units,
(e) unitary equipment,
(f) furnaces,
(g) dampers, and
(h) throttling devices.
This standard does not apply to non-ducted equipment.
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| contributor author | ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. | |
| date accessioned | 2017-09-04T17:56:35Z | |
| date available | 2017-09-04T17:56:35Z | |
| date copyright | 01/01/1997 | |
| date issued | 1997 | |
| identifier other | FMOYPAAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/179664 | |
| description abstract | This standard applies to steady, broad-band, narrow band. and/or discrete frequency sound at air temperatures between −50°C and +70°C. The test duct diameter range is from 150 mm to 2 m. The maximum flow velocity in the duct is 30 m/s and the maximum swirl angle is 15°. The frequency range is from 50 Hz to 10.000 Hz. This standard applies to sound sources connected to a duct. Examples of equipment covered by this standard are: (a) centrifugal fans, (b) axial-flow fans, (c) mixed-flow fans, (d) air-handling units, (e) unitary equipment, (f) furnaces, (g) dampers, and (h) throttling devices. This standard does not apply to non-ducted equipment. | |
| language | English | |
| title | ASHRAE 68 | num |
| title | Laboratory Method of Testing to Determine the Sound Power in a Duct - AMCA 330-97 | en |
| type | standard | |
| page | 26 | |
| status | Active | |
| tree | ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.:;1997 | |
| contenttype | fulltext |