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Gas Turbine Field Performance Determination: Sources of Uncertainties

[+] Author Affiliations
M. Pinelli

University of Ferrara, Ferrara, Italy

P. R. Spina

University of Bologna, Bologna, Italy

Paper No. 2000-GT-0311, pp. V003T03A012; 8 pages
  • ASME Turbo Expo 2000: Power for Land, Sea, and Air
  • Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Munich, Germany, May 8–11, 2000
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7856-9
  • Copyright © 2000 by ASME


This paper presents an analysis of the uncertainties in the determination of gas turbine health, which arise by using a method of Gas Path Analysis. This method uses field measurements to estimate, through a mathematical model of the gas turbine thermodynamic cycle, the characteristic geometric and performance parameters, which are indices of gas turbine health.

The investigated sources of uncertainties are the inaccuracy of measurements and the necessity of fixing a priori a number of characteristic parameters. This fact implies that variations occurring on these parameters in the actual gas turbine cause an estimation error on the characteristic parameters used as problem variables.

The analysis leads to the selection of the appropriate measurements to be used in the gas turbine health determination and identification of both the most critical measurements and parameters.

Copyright © 2000 by ASME



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