Performance Characteristics of Two- and Three-Dimensional Impellers in Centrifugal Compressors

[+] Author and Article Information
H. Harada

EBARA Research Co., Ltd., Fujisawa, Japan

J. Turbomach 110(1), 110-114 (Jan 01, 1988) (5 pages) doi:10.1115/1.3262155 History: Received January 30, 1986; Online November 09, 2009


The overall performance of two- and three-dimensional impellers of a centrifugal compressor were tested and compared. A closed-loop test stand with Freon gas as the working fluid was employed for the experiments. The inlet and outlet velocity distributions of all impellers were measured using three-hole cobra probes. As a result, it has been revealed that three-dimensional impeller in terms of efficiency, head coefficient, and operating range. Further, it has also been clarified that the impeller slip factor is affected by blade angle distribution.

Copyright © 1988 by ASME
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