Overview
EN ISO 13349-1:2022 - Fans - Vocabulary and definitions of categories - Part 1: Vocabulary (ISO 13349-1:2022) is the CEN-endorsed, 2022 edition of the international vocabulary for fans. This standard defines terminology used across the air-moving industry for all purposes (excluding electrical safety). It replaces EN ISO 13349:2010 and is the vocabulary part of a two-part series (the other part covers categories).
Keywords: EN ISO 13349-1:2022, ISO 13349-1, fans vocabulary, fan terminology, fan categories, fan types, installation categories.
Key topics and requirements
The document standardizes terms and classification schemes commonly used by manufacturers, consultants and specifiers. Major technical topics covered include:
- Fundamental definition of a fan - rotary-bladed machine that uses mechanical energy via impellers; work per unit mass normally ≤ 25 kJ/kg (machines exceeding this are turbocompressors).
- Standard air - defined density of 1.2 kg/m³ for reference.
- Installation categories (by ducting arrangement) - Categories A–E (e.g., free inlet/free outlet with or without partition, ducted inlet/outlet).
- Classification by development and application - e.g., custom-designed vs. standardized (series-produced) fans.
- Classification by function - ducted fan, partition fan, jet fan, circulating fan, air curtain unit / air curtain (with illustrations and notes for typical use).
- Classification by fluid path through the impeller - fan types defined by blade/shroud geometry and angle α (α
