Fan types
Fan noise - Basic notions and types of fans
Quizzed article REF: BM4177 V2
Fan types
Fan noise - Basic notions and types of fans

Author : Alain GUÉDEL

Publication date: April 10, 2021, Review date: April 28, 2021 | Lire en français

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2. Fan types

According to an ISO 5801 definition, a fan is "a turbomachine which receives mechanical energy and uses it by means of one or more impellers in such a way as to maintain a continuous flow of air or other gas through it, the pressure rise of which does not exceed 30 kPa for a density of 1.2 kg/m 3 ".

Above 30 kPa, the machine is no longer a fan, but a blower or compressor [BM 4 500] . An ISO classification divides fans into three categories: low-pressure fans (total pressure up to 2 kPa), medium-pressure...

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