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TECHNICAL PAPERS: Gas Turbines: Cycle Innovations

An Evaluation of the Effects of Water Injection on Compressor Performance

[+] Author and Article Information
A. J. White, A. J. Meacock

Hopkinson Laboratory, Cambridge University Engineering Department, Trumpington Street, Cambridge CB2 1PZ, UK

J. Eng. Gas Turbines Power 126(4), 748-754 (Nov 24, 2004) (7 pages) doi:10.1115/1.1765125 History: Received October 01, 2002; Revised March 01, 2003; Online November 24, 2004
Copyright © 2004 by ASME
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References

Chiesa, P., Lozza, G., Macchi, E., and Consonni, S., 1994, “An Assessment of the Thermodynamic Performance of Mixed Gas-Steam Cycles—Part II: Water-Injected and Hat Cycles,” ASME Paper No. 94-GT-424.
Van Liere, J., “The Tophat Turbine Cycle,” Modern Power Syst., Apr.
Utamura,  M., Takehara,  I., and Karasawa,  H., 1998, “MAT, A Novel Open Cycle Gas Turbine for Power Augmentation,” Energy Convers. Manage., 39(16–18), pp. 1631–1642.
Hill,  P., 1963, “Aerodynamic and Thermodynamic Effects of Coolant Injection on Axial Compressors,” Aeronaut. Q., Nov., pp. 331–348.
Horlock, J. H., 2001, “Compressor Performance With Water Injection,” ASME Paper No. 2001-GT-343.
Zhluktov, S., Bram, S., and De Ruyck, J., 2001, “Injection of Water Droplets in an Axial Compressor,” Proceedings of the Sixth World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics, Thessaloniki, Sept., II , 1415–1420.
Young,  J., and Yau,  K., 1998, “The Inertial Deposition of Fog Droplets on Steam Turbine Blades,” ASME J. Trubomach., 110, pp. 155–162.
Zheng, Q., Sun, Y., Li, S., and Wang, Y., 2002, “Thermodynamic Analysis of Wet Compression Process in the Compressor of a Gas Turbine,” ASME Paper No. GT-2002-30590.
Young,  J., 1995, “The Fundamental Equations of Gas-Droplet Multiphase Flow,” Int. J. Multiphase Flow, (21)2, pp. 175–191.
Wright, P., and Miller, D., 1991, “An Improved Compressor Performance Prediction Model,” Proc. Inst. Mech. Eng., PIMLAAApp. 69–82, Paper No. C423/028.
Spalding, D., 1979, Combustion and Mass Transfer, Pergamon Press, New York, Chap. 3.

Figures

Grahic Jump Location
Comparison of ideal wet and dry compression. p1=1 bar,T1=288 K,RH=100%. (Note: work is per kg of compressor delivery air.)
Grahic Jump Location
Work input per unit flow and evaporation rate for a polytropic compression with ηp=90% and p2/p1=15. Curve (i): ṗτ=0.8, curve (ii): ṗτ=20.
Grahic Jump Location
Entropy increase, ΔS/Ra, for the compression of Fig. 2
Grahic Jump Location
Compressor characteristics for different water injection rates (Inlet conditions: To=288 K,Po=1.0 bar,RH=100%, injected droplets are of 5 μm diameter and at 288 K)
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Stage flow coefficients relative to their design value (ϕ/ϕ*) for the compressor of Fig. 4. Each curve is plotted at the new operating point—i.e., the open circles of Fig. 4.
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Aerodynamic efficiency curves corresponding to Fig. 4

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