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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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)
Grahic Jump Location
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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