The Polytropic Analysis of Centrifugal Compressors

[+] Author and Article Information
John M. Schultz

York Division, Borg-Warner Corporation, York, Pa.

J. Eng. Power 84(1), 69-82 (Jan 01, 1962) (14 pages) doi:10.1115/1.3673381 History: Received September 19, 1960; Online January 10, 2012


The real-gas equations of polytropic analysis are derived in terms of compressibility functions X and Y which supplement the familiar compressibility factor, Z. A polytropic head factor, f, is introduced to adjust test results for deviations from perfect-gas behavior. Functions X and Y are generalized and plotted for gases in corresponding states.

Copyright © 1962 by ASME
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