ISO 13347-1:2025

Name: ISO 13347-1:2025 — Fans — Determination of fan sound power levels under standardized laboratory conditions — Part 1: General overview
SKU: ISO 13347-1:2025
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Fans — Determination of fan sound power levels under standardized laboratory conditions — Part 1: General overview

Название (английский):

ISO 13347-1:2025

Fans — Determination of fan sound power levels under standardized laboratory conditions — Part 1: General overview

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 36
Дата публикации:: 23 июля 2025 г.
Издание:: ISO IS 13347 edition 2 version 1
ICS:: 17.140.20

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Описание (английский):

This document establishes principles for the determination of the acoustic performance of fans. In addition, this document can be used to determine the acoustic performance of fans combined with an ancillary device such as a roof cowl or damper or, where the fan is fitted with a silencer, the sound power resulting from the fan and silencer combination.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 13347-1:2025 - "Fans - Determination of fan sound power levels under standardized laboratory conditions - Part 1: General overview" defines the principles for measuring and reporting the acoustic performance of fans in laboratory settings. The standard describes how to determine fan sound power levels (including fan + ancillary devices such as roof cowls, dampers, or silencers) using standardized test methods and frequency band analysis. It focuses on laboratory conditions and specifies measurement frameworks, instrumentation, uncertainty treatment and reporting conventions for ducted and non‑ducted applications including jet fans.

Key topics and technical requirements

Scope and definitions: Terms, symbols and installation categories used for acoustic rating of fans.

Measurement uncertainty: Guidance and normative requirements for quantifying test uncertainty.

Instrumentation: Requirements for microphones, sound level meters, frequency analysers, turbulence screens, windshields and reference sound sources (RSS).

Test methods: General and special test procedures covering reverberant room, enveloping surface, sound intensity and in‑duct methods; limitations and considerations for small fans and installation category E.

Operating & installation conditions: Specified fan mounting, rotational speed control, ambient condition measurement and determination of the aerodynamic operating point.

Data handling & calculations: One‑third‑octave and octave band level calculations, A‑weighted and overall sound power computations, and evaluation practices.

Test reporting: Required information about the fan, test site, instrumentation, measured values and subjective noise character assessments.

Normative/Informative annexes: Topics such as rotational speed effects, gas/air condition corrections, end‑reflection corrections, uncertainty analysis, and RSS calibration.

Practical applications

ISO 13347-1:2025 is used to:

Compare fan noise across models, sizes and speeds using standardized sound power metrics.

Support product selection and verify compliance with acoustic performance limits.

Scale and predict noise when changing fan size or rotational speed.

Engineer quieter equipment by providing consistent test data for R&D and acoustic design.

Provide auditable test reports for procurement, certification and regulatory purposes.

Related standards

ISO 5801 (airflow/rating references), ISO 3740 series, ISO 9614‑1/2 (sound intensity), and ISO 13350 (jet fan testing). These references are cited for harmonized symbols, methods and uncertainty treatment.

Keywords: ISO 13347-1:2025, fan sound power levels, acoustic performance of fans, laboratory conditions, sound intensity, reverberant room, one‑third octave, measurement uncertainty.

ISO 13347-1:2025

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Технические детали

ISO 580:1973

Moulded fittings in unplasticized polyvinyl chloride (PVC) for use under pressure — Oven test

BS EN ISO 3740:2019

Acoustics. Determination of sound power levels of noise sources. Guidelines for the use of basic standards.

BS EN ISO 13350:2015

Fans. Performance testing of jet fans.