The New 7FA - Technical Specifications
  CC SC
Output (MW) 627 211
Efficiency (%, LHV) 57.5 38.5
Heat rate (Btu/kw-hr, LHV) 5934 8872
NOx (ppmvd @ 15% O2) 2 9
NOx per start (lbs) – conventional start 373 lbm/start2 27 lbm/start3
CO per start (lbs) - conventional start
2142 lbm/start2
126 lbm/start 3
CO (ppmvd) 9 9
PM 10 Ib/hr, total/front-half only 36/18 18/9
VOC (ppmv) 1.4 1.4
UHC (ppmv) 7 7
Liquid fuel capabilityn Yes Yes
GT turndown (% baseload) 49 49
Fast Start capability (10 minutes) 50% GT load 160 MW
NOx per start (lbs) – CC Rapid Response/SC Fast Start4 32 lbm/start5 14 lbm/start6
CO per start (lbs) - CC Rapid Response/SC Fast Start4 162/lbm/start5 58 lbm/start 6

1 Provided as estimates only.
2 207FA configuration, conventional warm start w/o Rapid Response.
3 Single GT, conventional start, ignition to bottom of mode 6.
4 The 7FA gas turbine with the improved startup capability will be capable of dispatching in ten minutes after a start signal, and will achieve stable combustion with steady state NOx and CO emissions of 9 ppm within this time period. In simple cycle operation the 7FA will have the capability of dispatching more than 70% of baseload power output.
5 207FA configuration, Rapid Response, ignition to bottom of mode 6.
6 Single GT, Fast Start, ignition to bottom of mode 6.

Performance Simple Cycle

Description Details
ISO ambient conditions 14.696 psia, 59°F, 60% relative humidity, 0 ft elevation, 1.5" HgA steam turbine backpressure
Fuel 100% methane
Generator GT: 7FH2B generator

Performance Combined Cycle

Description Details
ISO ambient conditions 14.696 psia, 59°F, 60% relative humidity, 0 ft elevation
Fuel 100% methane
HRSG Natural circulation HRSG with an SCR for NOx, and no CO catalyst, 3 pressure reheat cycle, pressure drop of 15" H2O
Generator GT: 7FH2B generator
Steam turbine 207D flow 40" LSB
Cooling tower Mechanical draft evaporative cooling tower

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The new 7FA gas turbine is part of GE's ecomagination portfolio.



ecomagination

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