The strong influence of ambient temperature on the output and heat rate of a gas turbine has popularized the application of inlet fogging and overspray for power augmentation. In this paper we focus on practical considerations for the implementation of the fogging technology such as water quality requirements, foreign object damage, gas turbine inlet icing, intake duct design, changes in compressor performance characteristics, and blade coating distress problems. It also provides a checklist for users and project developers to facilitate the design and implementation of fogging systems. In addition, in this paper we cover operational experience and review the work pursued by gas turbine OEMs in the field of fogging technology. A list of unresolved issues and ongoing research related to the fogging technology is also provided.
Issue Section:
Gas Turbines: Industrial and Cogeneration
1.
Bhargava
, R. K.
, Meher-Homji
, C. B.
, Chaker
, M. A.
, Bianchi
, M.
, Melino
, F.
, Peretto
, A.
, and Ingistov
, S.
, 2007, “Gas Turbine Fogging Technology: A State-of-the-Art Review—Part I: Inlet Evaporative Fogging—Analytical and Experimental Aspects
,” ASME J. Eng. Gas Turbines Power
0742-4795, 129
, pp. 443
–453
.2.
Bhargava
, R. K.
, Meher-Homji
, C. B.
, Chaker
, M. A.
, Bianchi
, M.
, Melino
, F.
, Peretto
, A.
, and Ingistov
, S.
, 2007, “Gas Turbine Fogging Technology: A State-of-the-Art Review—Part II: Overspray Fogging—Analytical and Experimental Aspects
,” ASME J. Eng. Gas Turbines Power
0742-4795, 129
, pp. 454
–460
.3.
Meher-Homji
, C. B.
, and Mee
, T. R.
, III, 1999, “Gas Turbine Power Augmentation by Fogging of Inlet Air
,” Proceedings of the 28th Turbomachinery Symposium
, Houston, TX, September.4.
Chaker
, M.
, Meher-Homji
, C. B.
, and Mee
, T. R.
III, 2002, “Inlet Fogging of Gas Turbine Engines-Part A: Fog Droplet Thermodynamics, Heat Transfer and Practical Considerations; Part B: Fog Droplet Sizing Analysis, Nozzle Types, Measurement and Testing; Part C: Fog Behavior in Inlet Ducts, CFD Analysis and Wind Tunnel Experiments
,” ASME Papers No. 2002-GT-30562, No. 30563, and No. 30564.5.
Lecheler
, S.
, and Hoffmann
, J.
, 2003, “The Power of Water in Gas Turbines-ALSTOM’s Experience with Air Inlet Cooling
,” Power-Gen Latin America, Nov.6.
Meher-Homji
, C. B.
, 1995, “Blading Vibration and Failures in Gas Turbines- Part A: Blading Dynamics and the Operating Environment;” Part B: Compressor and Turbine Airfoil Distress;” Part C: Detection and Troubleshooting;” Part D: Case Studies
,” ASME Papers No. 95-GT-418, No. 95-GT-419, No. 95-GT-420, and No. 95-GT-421.7.
Meher-Homji
, C. B.
, 1992, “Gas Turbine Axial Compressor Fouling-A Unified Treatment of its Effects, Detection & Control
,” Int. J. Turbo Jet Engines
0334-0082, 9
pp. 311
–334
.8.
Meher-Homji
, C. B.
, Chaker
, M.
, and Motiwalla
, H.
, 2001, “Gas Turbine Performance Deterioration
,” Proceedings of the 30th Turbomachinery Symposium, Turbomachinery Laboratory
, Texas A&M University, Houston, 17–20 September.9.
Jolly
, S.
, 2003, “Performance Enhancement of GT 24 with Wet Compression
,” Power Gen International, 9–11 Dec., Las Vegas, NV.10.
Jolly
, S.
, 2002, “Wet Compression—A Powerful Means of Enhancing Combustion Turbine Capacity
,” Power-Gen International, Orlando Florida, 10–12 December.11.
Haskell
, R. W.
, 1989, “Gas Turbine Compressor Operating Environment and Material Evaluation
,” ASME Paper No. 89-GT-42.12.
Jolly
, S.
(personal communication).13.
Sohre
, J. S.
, 1980, “Shaft Currents Can Destroy Turbomachinery
,” Power
, Mar., pp. 96
–100
.14.
Cataldi
, G.
, Guntner
, H.
, Matz
, C.
, McKay
, T.
, Hoffmann
, J.
, Nemet
, A.
, Lecheler
, S.
, and Braun
, J.
, 2004, “Influence of High Fogging Systems on Gas Turbine Engine Operation and Performance
,” ASME Paper No. GT2004-53788.15.
Badeer
, G. H.
, 2000, “GE Aeroderivative Gas Turbines—Design and Operating Features
,” GE Power Systems, GER 3695E.16.
Jones
, C.
, and Jacobs
, J. A.
, 2000, “Economics and Technical Considerations for Combined-Cycle Performance-Enhancement Options
,” GE Power Systems, GER-4200.17.
Smith
, E.
, 2000, “Wet Compression: Gas Turbine Power Output Enhancement for Peak-Load Demand
,” Power Journal International, pp. 29
–32
.18.
Willems
, D. E.
, and Ritland
, P. D.
, 2003, “A Pragmatic Approach to Evaluation of Inlet Fogging System Effectiveness
,” International Joint Power Generation Conference, Atlanta, Georgia, 16–19 June, Paper No. IJPGC 2003-40075.19.
Walsh
, P. P.
, Mathieson
, D.
, Bicknell
, G.
, and Matthews
, K.
, 2000, “Inlet Fog Boost Technology Acquisition Programme
,” Power-Gen Europe.20.
Hoffman
, J.
, and McKay
, T.
, 2004, “Customer Benefits of Air Inlet Cooling and ALFog Fogging and High Fogging
,” Power-Gen Far East, October.21.
Lecheler
, S.
, Florjancic
, S.
, and Cataldi
, G.
, 2004, “Fogging and High Fogging: ALSTOM’s Experience and Customer Benefits
,” Power-Gen Europe.22.
Ingistov
, S.
, 2000, “Fog System Performance in Power Augmentation of Heavy Duty Power Generating Gas Turbines Model 7EA
,” ASME Paper No. 2000-GT-305.23.
Nolan
, J. P.
, and Twombly
, V. J.
, 1990, “Gas Turbine Performance Improvement Direct Mixing Evaporative Cooling System
,” ASME Paper No. 90-GT-368.24.
Combined Cycle Journal, 2004, “
Wet Compression
,” Second Quarter.25.
Gajjar
, H.
, Chaker
, M.
, Dighe
, A.
, and Meher-Homji
, C. B.
, 2003, “Inlet Fogging For a 655MW Combined Cycle Power Plant — Design, Implementation and Operating Experience
,” ASME Paper No. GT2003-38757.26.
Gajjar
, H.
, Modi
, A.
, Bathija
, D.
, and Jain
, S.
, 2002, “Gas Turbine Inlet Air Cooling: GPEC’s Experience
,” 11th V94.2 User’s Meeting, Vadodara, India, October.Copyright © 2007
by American Society of Mechanical Engineers
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