Gas Turbine Performance Optimization Using Compressor Online Water Washing Technique
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Abstract
The ability to predict the behaviour of a gas turbine engine and optimize its performance is critical in eco-nomic, thermal and condition monitoring studies. Having identified fouling as one of the major sources of compressor and therefore gas turbine deterioration, a computer-based engine model was developed to optimize the performance of gas turbines. The paper thus presents an analysis of compressor hand cleaning, on and offline compressor washing to actualize the technique using a computer program in Visual Basic programming language with data collected over a period of fifteen weeks for 2 gas turbine plants GT1 and GT2. The results of the data collected, when collated, shows that after washing, the overall operational efficiency changed from 39.2% to 46.25%. To optimize the performance of gas turbine engines, it is therefore recommended that operators should perform a combination of compressor hand cleaning, offline and online washing simultaneously.
- I. S. Diakunchak, “Performance Degradation in Industrial Gas Turbines,” ASME Paper 91-GT-228, 1991.
- P. C. Frith, “The Effect of Compressor Rotor Tip Crops on Turbo- Engine Performance,” ASME Paper 92-GT-83, 1992.
- S. A. Khalid, A. S. Khalsa, I. I. A. Waitz, S. C. Tan, E. M. Greitzer, N. A. Cumpsty, J. J. Adamczyk and F. E. Marble, “Endwal Blockage in Axial Compressor,” ASME Paper 98-GT-203,1998.
- R. J. Kind, P. J. Serjak and M. W. P. Abbott, “Measurements and Prediction of the Effects of Sur-face Roughness on Profile Losses and Deviation in a Turbine Cascade,” ASME Paper 96-GT-203, 1996.
- R. Kurz and K. Brun, “Degradation in Gas Turbine Systems,” ASME Journal of Engineering for Gas Turbines and Power, Vol. 123, No. 1, 2001 pp. 70-77. doi:10.1115/1.1340629
- R. K. Rajput, “A Textbook of Power Plant Engineering,” Laximi Publications, New Delhi, 1995.
- D. G. Wilson, “The Design of High Efficiency Turbomachinery and Gas Turbines,” MIT Press, Mass, 1994.
- T. D. Eastop and A. McConkey “Applied Thermodynamics for Engineering Technologists,” 5th Edition, Addison-Wesley Longman, Ltd., UK, 1993.
- P. K. Nag, “Power Plant Engineering,” 2nd Edition, Tata McGraw Hill Publishing Company Limited, New Delhi, 2001, p.764.
- E. A. Ogbonnaya, “Modeling Vibration Based Faults in Rotor Shaft of Gas Turbines,” Ph.D Thesis, Rivers State University of Science and Technology, Port Harcourt, 2004.
- E. Schnei-der, Dermiricioglu, S. Fraanco and D. Therkom, “Analysis of Compressor Online Washing to Optimize Gas Turbine Power Plant Performance,” Proceedings of ASME Turbo Expo 2009, Orlando, 8-12 June 2009, pp. 1-9.
- E. A. Ogbonnaya and K. Theophilus Johnson, “Use of Multiple Variable Mathematical Method for Effective Condition Monitoring of Gas Turbine,” Proceedings of ASME Turbo-Expo, Glasgow, 14-18 June 2010, pp. 1-4.
- R. J. Boyle, “Prediction of Surface Roughness and Incidence Effects on Turbine Performance,” Journal of Turbomachinery, Vol. 116, No. 4, 1994, pp. 512-519. doi:10.1115/1.2929468
- E. A. Ogbonnaya, H. U. Ugwu and C. N. Johnson, “Computer-Aided Solution to the Vibra-tional Effect of Instabilities in Gas Turbine Compressors,” En-gineering, Vol. 2, No. 8, 2010, pp. 658-664. doi:10.4236/eng.2010.28084
- R. Beebe, “Condition Monitoring by Performance Analysis to Optimize Time for Overhaul of Centrifugal Pumps,” 52nd Annual Meeting for Machinery Failure Prevention Society, Virginia Beach, 3 August 2009, pp. 102-112.