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Water Injection Effects on Compressor Stage Operation

[+] Author Affiliations
I. Roumeliotis, K. Mathioudakis

National Technical University of Athens, Athens, Greece

Paper No. GT2006-90427, pp. 683-691; 9 pages
doi:10.1115/GT2006-90427
From:
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 4: Cycle Innovations; Electric Power; Industrial and Cogeneration; Manufacturing Materials and Metallurgy
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4239-8
  • Copyright © 2006 by ASME

abstract

In the present paper, experimental work concerning the effect of water injection on a compressor stage is presented. The effect on compressor stage performance and stability is examined for water injection up to 2%. The behaviour of the air flow in the blade rows is examined through aerodynamic measurements. The results indicate that although the water injection appears to not have any significant effect on the flow pattern and to stage pressure rise and stall margin, there is a measurable effect on compression efficiency which seems to result mainly from losses of mechanical nature and water acceleration. The efficiency degradation is proportional to the water ratio entering the engine.

Copyright © 2006 by ASME

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