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Polytropic Efficiency Centri Compressor

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#1 chetanhm2


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Posted 28 June 2020 - 01:33 AM

Dear Sir,


I want to know how any high fidelity software calculates potytropic efficiency of centrifugal compressor. What is the formula for this?


Also i have seen it is based on enthalpy change and pressure ratio also as well as poltropic exponenet as well.Can somebody guide me as i came acroos one formula wherein it is based on temp and pressure ratios and cp/cv value and other is based on enthalpy change and poltropic exponenet and pressure ratio

#2 breizh


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Posted 28 June 2020 - 04:23 AM


You should find good pointers in the documents attached.


Good luck


Edited by breizh, 28 June 2020 - 04:25 AM.

#3 breizh


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Posted 02 July 2020 - 03:22 AM




Consider this resource above .

Good luck


#4 FRBChemE


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Posted 17 November 2020 - 04:39 PM

A rather old book for Compressor analysis is Gas Machinery by Lyman Scheel Gulf Publishing Co available used on Amazon for about $25. 

It has all the equations you need.

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