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What are the difference between fan, blower, and compressor

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Question added by Eslam Hashim , Field Service Engineer , GEA Middle East FZE
Date Posted: 2014/04/01
vikas sharma
by vikas sharma , Senior Mechanical Engineer , RSPL LTD

The classification can be done according to dicharge pressure over the suction pressure ratio;-

For Fan - 1 to 1.1

For Blower - 1.1 to 3

For Compressor - 3 to 5

kandarp jha
by kandarp jha , engineer -maintenance , aac mining executors india pvt. ltd.

there is a term called specific volume.it is the reciprocal of density.

 

in case of fan or blower the specific volume almost remains constant, but in case of compressor the specific volume changes and the fluid(air) is compressed

Ahmed Rafik Moudjahed
by Ahmed Rafik Moudjahed , Mechanical Engineer Package Engineer , AtkinsRéalis

Hello;

As you know fans and blowers provide air for ventillation and industrial process requirements.Fan blower and compressors are differentiated by the methode used to move the air , and by the systeme pressure they most operate against , according to the ASME ( American Society of Mechanical Engineers), the classification is done according to the discharge pressure over the suction pressure  ratio.

This ratio is up to1.11 for the Fan ,1.11 to1.20 for Blowers and rise to  more than1.20 for Compressors.

 

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