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Integrally geared centrifugal air compressor

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Divya11

Mechanical
Joined
May 3, 2016
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9
Location
SG
Hi All,

Attached is a performance curve for integrally geared centrifugal air compressor. Can anyone tell me the meaning of GVA specified on the left?
As far as I remember, the different curves are for different speeds of the compressor. Is that correct?
 
 http://files.engineering.com/getfile.aspx?folder=427587cb-04a2-4631-8da0-e0be00f28fee&file=Compressor.docx
GVA = Guide Vane Angle ?

The curves are drawn for various guide vane angles.
 
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