Comparative rotor dynamic analysis of integrated and standalone compressors

Abstract

This research work focuses on conducting a comparative analysis of rotor dynamics between integrated and standalone centrifugal compressors. The initial chapter explores the characteristics and applications of different compressor types, with specific emphasis on integrated and standalone configurations. The second chapter provides a detailed explanation of the theory and methodology used for the rotor dynamic analysis, employing the Finite Element Method (FEM) based on the Timoshenko beam theory. Essential data, including material properties, dimensions, stiffness, damping, and unbalance values, are addressed in subsequent chapters, along with case studies involving integrated and standalone compressors with varying bearing arrangements. The results demonstrate the absence of resonance in all cases, with adequate damping observed in HPC and LPC for case 2.a, while case 2.b shows lower damping in the LPC. The study aims to bridge the gap in comparative analysis of motor-compressor trains, contributing to the understanding of rotor dynamic in integrated and standalone compressors for specific industry applications.