ASHRAE 68

Laboratory Method of Testing to Determine the Sound Power in a Duct - AMCA 330-97

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