Parametric Analysis of Existing Gas Turbines With Inlet Evaporative and Overspray Fogging
Author:
Bhargava R.1, Meher-Homji C. B.2
Affiliation:
1. Universal Ensco, Inc., 1811 Bering Drive, Houston, TX 77057-3100 2. Bechtel Corporation, 3000 Post Oak Blvd. Houston, TX 77056
Abstract
With deregulation in the power generation market and a need for flexibility in terms of power augmentation during the periods of high electricity demand, power plant operators all over the world are exploring means to augment power from both the existing and new gas turbines. An approach becoming increasingly popular is that of the high pressure inlet fogging. In this paper, the results of a comprehensive parametric analysis on the effects of inlet fogging on a wide range of existing gas turbines are presented. Both evaporative and overspray fogging conditions have been analyzed. The results show that the performance parameters indicative of inlet fogging effects have a definitive correlation with the key gas turbine design parameters. In addition, this study indicates that the aeroderivative gas turbines, in comparison to the heavy-duty industrial machines, have higher performance improvement due to inlet fogging effects. Plausible reasons for the observed trends are discussed. This paper represents the first systematic study on the effects of inlet fogging for a large number (a total of 67) of gas turbines available from the major gas turbine manufacturers.
Publisher
ASME International
Subject
Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering
Reference12 articles.
1. Tawney, R., Pearson, C., and Brown, M., 2001, “Options to Maximize Power Output for Merchant Plants in Combined Cycle Applications,” ASME Paper No. 2001-GT-0409. 2. Jones, C., and Jacobs, J. A., 2000, “Economics and Technical Considerations for Combined-Cycle Performance-Enhancement Options,” GE Publication GER-4200. 3. Kitchen, B. J., and Ebeling, J. A., 1995, “Qualifying Combustion Turbines for Inlet Air Cooling Capacity Enhancement,” ASME Paper No. 95-GT-266. 4. Meher-Homji, C. B., and Mee, T. R., 1999, “Gas Turbine Power Augmentation by Fogging of Inlet Air,” Proceedings of the 28th Turbomachinery Symposium, Turbomachinery Laboratory, Texas A&M University, Sept., Houston, TX. 5. Meher-Homji, C. B., and Mee, T. R., 2000, “Inlet Fogging of Gas Turbine Engines–Part A: Theory, Psychrometrics and Fog Generation and Part B: Prac-tical Considerations, Control and O&M Aspects,” ASME Paper Nos. 2000-GT-307; 2000-GT-308.
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