AMCA International Revises Fan-Sound-Ratings Standard 301
ARLINGTON HEIGHTS, Ill., February 13, 2023—Air Movement and Control Association (AMCA) International Inc. announces the publication of ANSI/AMCA Standard 301-22, Methods for Calculating Fan Sound Ratings from Laboratory Test Data.
Superseding ANSI/AMCA Standard 301-14, ANSI/AMCA Standard 301-22 applies to any fan for which a test standard for measuring sound-power levels exists. Stakeholders include fan manufacturers, building designers, engineers, and acoustic consultants.
Revisions of note include:
- Section 5.1: Because of inherent inaccuracy, extrapolation of operating points toward shutoff no longer is allowed. Additionally, to improve the accuracy of projections of blade-pass tone, the previous recommendation that projections be made in 1/3 octave bands if 1/3-octave-band test data are available now is a requirement.
- Annex A: Annex A was rewritten, with several figures added to provide clarity regarding test-wheel size, speed, and tested operating points.
Additional revisions include updated references to standards, clarification of the intent of several sections, and a rewritten Section 4, “Definitions, Symbols and Subscripts.”
The cost of ANSI/AMCA Standard 301-22 is $45 for AMCA members and $90 for non-members. To purchase a copy, click here.
For more information about ANSI/AMCA Standard 301-22, contact Director of Publications and Standards Joe Brooks, PE, at [email protected] or Senior Manager, Publications and Standards Shruti Kohli-Bhargava at [email protected].
About AMCA International
Air Movement and Control Association (AMCA) International Inc. is a not-for-profit association of manufacturers of fans, dampers, louvers, air curtains, and other air-system components for commercial HVAC, industrial-process, and power-generation applications. With programs such as certified ratings, laboratory accreditation, verification of compliance, and international-standards development, its mission is to advance the knowledge, growth, and integrity of the air-movement-and-control air-systems industry. For more information about AMCA, visit www.amca.org.
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