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Centrifugal Compressors
Started by arouna_roro, May 15 2015 05:26 AM
3 replies to this topic
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#1
Posted 15 May 2015 - 05:26 AM
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 !!
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 !!
#2
Posted 15 May 2015 - 06:18 AM
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.
#3
Posted 15 May 2015 - 07:12 AM
P1/P2 = T2/T1
#4
Posted 15 May 2015 - 11:29 AM
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.
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