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TECHNICAL PAPERS: Gas Turbines: Industrial and Cogeneration

Gas Turbine Compressor Washing: Historical Developments, Trends and Main Design Parameters for Online Systems

[+] Author and Article Information
Friederike C. Mund, Pericles Pilidis

Department of Power, Propulsion & Aerospace Engineering, School of Engineering, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK

J. Eng. Gas Turbines Power 128(2), 344-353 (Jul 27, 2005) (10 pages) doi:10.1115/1.2132378 History: Received September 23, 2004; Revised July 27, 2005

By being exposed to atmospheric conditions gas turbines are inevitably subjected to sources of fouling. The resulting degradation can be partially recovered by cleaning the compressor. Based on open literature and patents, the different approaches leading to the most advanced method of compressor online washing have been compiled. The origins of online washing and the development trends over the decades are outlined, and the current systems are categorized. The introduction of system categories has been justified by a field survey. Additionally, the main design parameters of online washing systems are summarized.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

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Figure 1

Removable spray manifold by Freid and Tapparo (33)

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Figure 2

Inter-compressor injection nozzle by Mansson (34)

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Figure 3

Spray nozzle manifold (left) and installation opposite of the compressor (right) suggested by McDermott (37)

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Figure 4

Spray injection from the bell-mouth side into regions of low airflow velocity and high turbulence (37)

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Figure 5

Washing device and nozzle detail by Kolev and Robben (43), side view

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Figure 6

Injection system with fittings from outside the bell mouth (21)

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Figure 7

Washing device for aero-engines (22) and adaptation for a stationary application (19)

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Figure 8

Wet compression and compressor washing system located upstream of the compressor by Trewin and Carberg (49)

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Figure 9

Wet compression and compressor washing system with injection nozzles throughout the compressor by Ingistov (50)

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Figure 10

Qualitative categories of online washing systems

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Figure 11

Principal nozzle locations for basic online washing system categories

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Figure 12

Air-fluid ratio versus engine power output for specific state-of-the-art washing systems based on field data and washing recommendations

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