3 replies to this topic

[arouna_roro]

I my plant a two stage centrifugal compressor 1st stage compresses from 1 bat to 10 then the 2nd stage compresses from 10 to 32 , i know the inlet temperature and the outlet temperature but i suspend of the outlet temperature .
Can anybody tell me the equation i use inlet P & T and outlet P assuming that it is an isentropic compression to calculate the true outlet T to compare it with the presnet one !!

[breizh]

http://www.grc.nasa....ne/compexp.html

 

https://books.google...epage&q&f=false

To support your work.

Breizh

Edited by breizh, 15 May 2015 - 12:03 PM.

[shan]

P1/P2 = T2/T1

[Art Montemayor]

You are going in the wrong direction because you obviously don't understand gas compression - especially that used in centrifugal machines.

 

Centrifugals do not compress gases isentropically.  They do so in a POLYTROPIC manner.  Therefore, you have to use the Polytropic relationships.