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RESEARCH PAPERS

Experimental Investigation and Performance Analysis of Six Low Flow Coefficient Centrifugal Compressor Stages

[+] Author and Article Information
J. Paroubek, V. Cyrus

SVÚSS, National Research Institute for Machine Design, Praha, Czech Republic

J. Kynčl

ČKD Kompresory a.s., Praha, Czech Republic

J. Turbomach 117(4), 585-592 (Oct 01, 1995) (8 pages) doi:10.1115/1.2836572 History: Received February 04, 1995; Online January 29, 2008

Abstract

Some results of a research and development program for centrifugal compressors are presented. Six-stage configurations with low flow coefficient were tested. The stages had channel width parameter b2 /D2 = 0.01 and 0.03. For each value of the width parameter, three different impellers with inlet hub to outlet diameter ratio do /D2 = 0.3, 0.4, and 0.5 were designed. Test rig, instrumentation, and data analysis are described. Special attention was devoted to probe calibrations and to evaluation of the leakage, bearing, and disk friction losses. Aerodynamic performance of all tested stages is presented. Slip factors of impellers obtained experimentally and theoretically are compared. Losses in both vaneless diffuser and return channel with deswirl vanes are discussed. Rotating stall was also investigated. Criteria for stall limit were tested.

Copyright © 1995 by The American Society of Mechanical Engineers
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