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How Sound Reflectivity Factors Impact Fan Noise Analysis

When reviewing fan performance information from a fan selection program, critical fan sound data measured in sound pressure levels (dBA) is often overlooked. And a program input value that can significantly change the resulting dBA levels is the reflectivity or “Q”...

2020 Updates to NFPA 654

Changes and updates are everyday occurrences as processes, Standards, and Codes evolve as our usage experiences dictate necessary changes. This can be seen with most everyday items, like a cellphone or a computer, and similarly, NFPA 654 has adapted with new 2020...

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