Commenced in January 2007
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Improvement of Gas Turbine Performance Test in Combine Cycle

Authors: M. Khosravy-el-Hossani, Q. Dorosti

Abstract:

One of the important applications of gas turbines is their utilization for heat recovery steam generator in combine-cycle technology. Exhaust flow and energy are two key parameters for determining heat recovery steam generator performance which are mainly determined by the main gas turbine components performance data. For this reason a method was developed for determining the exhaust energy in the new edition of ASME PTC22. The result of this investigation shows that the method of standard has considerable error. Therefore in this paper a new method is presented for modifying of the performance calculation. The modified method is based on exhaust gas constituent analysis and combustion calculations. The case study presented here by two kind of General Electric gas turbine design data for validation of methodologies. The result shows that the modified method is more precise than the ASME PTC22 method. The exhaust flow calculation deviation from design data is 1.5-2 % by ASME PTC22 method so that the deviation regarding with modified method is 0.3-0.5%. Based on precision of analyzer instruments, the method can be suitable alternative for gas turbine standard performance test. In advance two methods are proposed based on known and unknown fuel in modified method procedure. The result of this paper shows that the difference between the two methods is below than %0.02. In according to reasonable esult of the second procedure (unknown fuel composition), the method can be applied to performance evaluation of gas turbine, so that the measuring cost and data gathering should be reduced.

Keywords: Gas turbine, Performance test code, Combined cycle.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1082121

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References:


[1] S. C. Gulen, P. R. Gliffin, S. Paolucci, "Real-time on-line performance diagnostics of heavy-duty industrial gas turbine", Journal of gas turbine and power, October 2002, Vol. 124, 910-921.
[2] A. N. Lakshminarasimha, M. P. Boyce, C. B. Meher-Homji, "modeling and analysis of gas turbine performance deterioration", Journal of gas turbine and power, Vol.116, January 1994, 46-52.
[3] A. Zwebek, P. Pilidis, "Degradation effects on combine cycle power plant performance- part1: Gas turbine cycle component degradation effect", Journal of gas turbine and power, Vol. 125, July 2003,651-657.
[4] Q. Z. Al-Hamdan, M. S. Y. Ebad, "modeling and simulation of a gas turbine engine for power generation", Journal of gas turbine and power, Vol. 128, April 2006, 302-311.
[5] T. Kolakianits, K. Svensson, "Off-design performance of various gas turbine cycle and shaft configuration", Journal of gas turbine and power, Vol. 121, October 1999, 649-655.
[6] A. A. Elhadik, "The impact of atmospheric conditions on gas turbine performance", Journal of gas turbine and power, Vol. 112, October 1990, 590-596.
[7] A. Stamatis, K. Mathioudakis, K. D. Papailiou, "Adaptive simulation of gas turbine performance", Journal of energy engineering, Vol. 112, April 1990, 168-175.
[8] W. Yonghong, "A new method of predicting the performance of gas turbine engines", Journal of energy engineering, Vol. 113, January 1991,106-111.
[9] C. Riegler, "Correlations to include heat transfer in gas turbine performance calculation", Aerospace science and Technology,1999, No.5, 281-292.
[10] Y. Zhu, H. C. Frey, "simplified performance model of gas turbine combine cycle systems", Journal of energy engineering, Vol. 133, June 2007, No.2, 82-90.
[11] ASME PTC22 Gas Turbine, American Society of Mechanical Engineers, New York, 2005.