Gas Turbine Handbook : Principles and Practices

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236 Gas Turbine Handbook: Principles and Practices closed unloading station and transferred to a coal storage dome. The unloading station will consist of two receiving hoppers, each equipped with a vibrating-type unloading feeder that will feed the raw coal conveyor systems. All material handling systems will be enclosed and supplied with dust collection systems for environmental control. The steam turbine will be a straight condensing unit with an uncontrolled extraction and an uncontrolled admission. The guaranteed rating is 46226 kW, with the VWO expected output of 50785 kW. The steam conditions are 950 psia [65.5 Bars], 950°F [510°C] inlet, with exhaust at 0.98 psia [67mBars]. At the rating, the uncontrolled extraction pressure is 485 psia [33.4Bars], and the uncontrolled admission is 54 psia [3.7Bars]. The turbine will have 26 inch [0.66m] last stage buckets in an axial exhaust configuration. The turbine will be fully packaged, baseplate mounted, with a combined lubrication and control system mounted on a separate console. The control will be a GE Mark V Simplex system. The generator is a fully packaged and baseplate mounted GE TEWAC unit rated at 59000 KVA at 0.85 power factor. The gas turbine is a General Electric MS6001FA. It is an evolutionary design, being aerodynamically scaled from the larger MS7001FA machine. It shares the same thermodynamic cycle with previous GE “F”-class machines. Key characteristics of the “FA” cycle pertinent to the Sierra Pacific application are the 2350°F [1288°C] firing temperature and high output for this frame size, elevated exhaust temperature making possible high combined cycle efficiencies and the ability of the combustion system to burn a wide spectrum of fuels. The MS6001FA has a compressor or “cold-end” drive flange, turning an open-ventilated GE 7A6 generator (82000 KVA @ 0.85PF) through a reduction load gear. The exhaust is an axial design directing the gas flow into the HRSG. These mechanical features have facilitated an optimum plant arrangement for Sierra Pacific’s combined cycle heat recovery application. Plant Performance Key aspects of the predicted plant performance are summarized in the tables opposite.
Case Study #1 237 Table 14-1. Expected Plant Performance on SYNGAS* ———————————————————————————————— Heat Input (10 6 Btu/Hr) LHV/HHV[KJ/Hr] 807.3[850.9]/836.6[881.9] ———————————————————————————————— Combustion Turbine Power (MW) 61 ———————————————————————————————— Steam Turbine Power (MW) 46 ———————————————————————————————— Steam Turbine Conditions (psia[Bars]/°F[°C]) 950[65.50]/950[510] ———————————————————————————————— Station Load (MW) 7 ———————————————————————————————— Net Power Output (MW) 100 ———————————————————————————————— Heat Rate(Btu/kWhr) LHV/HHV[KJ/kWhr] 8096[8534]/8390[8844] ———————————————————————————————— *At 50°F[10°C] and 4280'[1305m] elevation, evaporative cooler off. Table 14-2. Expected Plant Performance vs. Temperature. —————————————————————————————————— Ambient Temperature 5°F*[–15°C] 50°F[10°C] 95°F**[35°C] —————————————————————————————————— Expected Performance - Coal —————————————————————————————————— Net Power Output (MW) 102 100 96 —————————————————————————————————— Heat Rate (Btu/kWhr) LHV/HHV 7956/8245 8096/8390 8154/8450 —————————————————————————————————— (KJ/kWhr) LHV/HHV 8387/8691 8534/8844 8596/8908 —————————————————————————————————— Expected Performance - Natural Gas —————————————————————————————————— Net Power Output (MW) 91 88 84 —————————————————————————————————— Heat Rate (Btu/kWhr) HHV 8103 8144 8207 —————————————————————————————————— (KJ/kWhr) HHV 8541 8584 8717 —————————————————————————————————— *5°F[–15°C] Data do not include spiking. **95°F[35°C] Data include evaporative cooling.)
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Gas Turbine Handbook: Principles an
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Gas Turbine Handbook: Principles an
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Dedication This book is dedicated t
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Contents PREFACE ..................
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Chapter 13—BOROSCOPE INSPECTION .
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Preface to the Third Edition The ne
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Acknowledgments I wish to thank the
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2 Gas Turbine Handbook: Principles
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Figure 2-3. Courtesy of United Tech
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Chart 8-1 Gas Turbine Environments
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Appendix A-2 304 Gas Turbine Handbo
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5. Weather Hood Material __________
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Appendix C-6 Air/Oil Cooler Specifi
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9. Drive Requirements A. Hydraulic
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22. Packaging For Shipment Per Spec
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Parameters Units NH 3 CO H 2 CH 4 C
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.055 Parameters Units 1/0 .88/.12 .
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Koppers Foster Blue Coal Gas Winkle
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