The Verification of a Simplified Mathematical Model of the Centrifugal Compressor Stages

A simplified model for estimating the efficiency of a centrifugal compressor stage was developed in the early 1990s. To calculate the efficiency, it is sufficient to know the design parameters and similarity criteria. The model is successfully used for calculating compressor candidates in computer programs of the universal modeling method. With the minimal amount of time, the compressor candidates with a different number of shafts and revolutions, number of stages and intermediate coolers, and the type of impellers and diffusers are compared. Recently, the model has undergone significant revision and alteration. The authors have verified the new model, comparing the calculated efficiency with the measured efficiency of several dozens of stages. The verification has yielded positive results.

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