ger4194 - g GER-4194 GE Power Systems The 7FB The Next...

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GE Power Systems The 7FB: The Next Evolution of the F Gas Turbine Roberta Eldrid Lynda Kaufman Paul Marks GE Power Systems Schenectady, NY GER-4194 g
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Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Critical Issues in the F Evolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Life-Cycle Economics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 The F Series Gas Turbine Experience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Reliability and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 The Evolution of Cost Improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 The FA Compressor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 The H Gas Turbine Combined Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 The Flowback of H Technology into the F Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Applying Six Sigma to Determine the Future Evolution of the F/FA . . . . . . . . . . . . . . . . . . . . 9 The Next Step in the F Product Evolution: The 7FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 The 7FB: The Next Evolution of the F Gas Turbine GE Power Systems GER-4194 (04/01) i
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The 7FB: The Next Evolution of the F Gas Turbine GE Power Systems GER-4194 (04/01) ii
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Introduction Global deregulation of the power generation industry and the emergence of a merchant plant market have accelerated the demand for high-efficiency, lower-cost power plants. The drive for efficiency has been reinforced by grow- ing concern over global warming, which has been attributed to the burning of fossil fuels. In view of these market demands, GE has contin- ued to evolve its F technology, which has been the standard setter for economical, clean power generation during the last decade. GE intro- duced the MS7001FB in November 1999 at Power-Gen International ( Figure 1 ). The 7FB is better by over 1 percentage point in net plant combined-cycle efficiency and greater by nearly 7% in combined-cycle output than its predeces- sor, the MS7001FA. Some of the many factors that were considered in advancing the F/FA product line to the FB included life-cycle economics, the F/FA operat- ing experience, a comprehensive FA compres- sor test and applicable technologies that were developed under the H System program. The H System program was supported by the ATS Program, which was sponsored by the U.S. Department of Energy. Six Sigma, GE’s statisti- cal process, was used to evaluate these factors and examine potential next steps in arriving at the optimal solution – the 7FB. Critical Issues in the F Evolution Life-Cycle Economics In the 1950s, when gas turbines were first used for power generation in large numbers, they were applied almost exclusively to peaking duty. Designs were required for this mode of service that featured low specific cost and good starting reliability. Through the 1960s and early 1970s, continuing advances in efficiency, reliability and availability facilitated a wider range of applications for gas turbines. Today, with the addition of low emis- sions, low overall life-cycle cost and fast installa- tion time, the gas turbine-based power plant has become the most widely used method for power production.
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ger4194 - g GER-4194 GE Power Systems The 7FB The Next...

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