DOI QR코드

DOI QR Code

해석적 방법을 이용한 가스터빈 축류 압축기의 파울링 현상 해석

송태원;김동섭;김재환;손정락;노승탁
Song, Tae-Won;Kim, Dong-Seop;Kim, Jae-Hwan;Son, Jeong-Rak;No, Seung-Tak

  • 발행 : 2001.12.01

초록

The performance of gas turbines is decreased as their operating hours increase. Fouling in the axial compressor is one of main reasons for the performance degradation of gas turbine. Airborne particles entering with air at the inlet into compressor adhere to the blade surface and result in the change of the blade shape, which is closely and sensitively related to the compressor performance. It is difficult to exactly analyze the mechanism of the compressor fouling because the growing process of the fouling is very slow and the dimension of the fouled depth on the blade surface is very small compared with blade dimensions. In this study, an improved analytic method to predict the motion of particles in compressor cascades and their deposition onto blade is proposed. Simulations using proposed method and their comparison with field data demonstrate the feasibility of the model. It if found that some important parameters such as chord length, solidity and number of stages, which represent the characteristics of compressor geometry, are closely related to the fouling phenomena. And, the particle sloe and patterns of their distributions are also Important factors to predict the fouling phenomena in the axial compressor of the gas turbine.

키워드

막오염;점착효율;입자분포;축류압축기;가스터빈

참고문헌

  1. Iwamoto, T., Ikesawa, K., Kanayama, T., Nagai, K., Yukinari, A. and Nakagawa, T., 1991, 'Development of a High-Pressure Ratio Axial Flow Compressor,' Proceedings of the 1991 Yokohama International Gas Turbine Congress, Vol. II, pp.79-86
  2. 송태권, 김재환, 김동섭, 노승탁, 2000, '단축적법의 개선에 의한 축류압축기의 효과적인 성능예측,' 대한기계학회논문집(B), 제24권, 제8호, pp. 1077-1084
  3. Tarabrin, A. P., Schurovsky, V. A., Bodrov, A. I. and Stalder, J.-P., 1998, 'Influence ofAxiai Compressor Fouling on Gas Turbine Unit Performance Based on Different Schemes and with Different Initial Parameters,' ASME Paper 98-GT-4l6
  4. Heinsohn, R. J. and Kabel, R. L., 1999, Sources and Control of Air Pollution, Prentice Hall
  5. Tabakoff, W., 1984, 'Review - Turbomachinery Performance Deterioration Exposed to Solid Particulates Environment,' Journal of Fluids Engineering, Vol. 106, pp. 125-134
  6. Humphrey, J. A. C, 1990, 'Fundamentals of Fluid Motion in Erosion by Solid Particle Impact,' International Journal of Heat and Fluid Flow, Vol.11 pp.170-195 https://doi.org/10.1016/0142-727X(90)90036-B
  7. Hinds, W. C, 1982, Aerosol Technology: Properties, Behavior, and Measurement of Airborne Particles, John Wiley & Sons, Inc.
  8. Jenning, S. G., 1988, 'The Mean Free Path,' Journal of Aerosol Science, Vol. 19, No.2, pp.159-166 https://doi.org/10.1016/0021-8502(88)90219-4
  9. Mezheritsky, A. D. and Sudarev, A. v.. 1998, 'The Mechanism of Fouling and the Cleaning Technique in Application to Flow Parts of the Power Generation Plant Compressors,' ASME Paper 90-GT -103
  10. Saravanamuttoo, H. I. H. and Lakshminarasimha, A. N., 1985, 'A Preliminary Assessment of Compressor Fouling,' ASME Paper 85-GT-153
  11. Aker, G. F. and Saravanamuttoo, H. I. H., 1989, 'Predicting Gas Turbine Performance Degradation Due to Compressor Fouling Using Computer Simulation Techniques,' ASME Journal of Engineering for Gas Turbines and Power, Vol. 111, pp. 343-350
  12. Seddigh, E and Saravanamuttoo, H. I. H., 1991, 'A Proposed Method for Assessing the Susceptibility of Axial Compressors to Fouling,' ASME Journal of Engineering for Gas Tturbines and Power, Vol. 113, pp. 595-601
  13. Hag, I. and Saravanamuttoo, H. I. H., 1993, 'Axial Compressor Fouling Evaluation at High Speed Settings Using an Aerothermodynamic Model,' ASME Paper 93-GT407
  14. Massardo, A. E, 1991, 'Simulation of Fouled Axial Multistage Compressors,' IMechE conference on Turbomachinery, paper C423/048, pp. 243-252
  15. Tarabrin, A. P., Schurovsky, V. A, Bodrov, A. I. and Stalder, J.-P., 1998, 'An Analysis of Axial Compressor Fouling and a Blade Cleaning Method,' ASME Journal of Turbomachinery, Vol. 120, pp. 256-261
  16. Diakunchak, I. S' 1992, 'Performance Deterioration in Industrial Gas Turbines,' ASME Journal of Engineering for Gas Turbines and Power, Vol. 114, pp. 161-168