Heavy-Duty Gas Turbine M501JAC

The J Series gas turbines are an integration of the proven G Series and elemental technologies for temperature increase as a result of the Japanese national project for the development of 1,700°C class gas turbines. They operate at a turbine inlet temperature of 1,600°C. The M501JAC Series gas turbines adopt air cooling for combustors instead of steam cooling. With a performance equivalent to the M501J Series gas turbines, they produce a high level of operability including a shorter start-up time. Similar to the proven M501GAC combustion system, the M501JAC combustor applies air cooled stationary combustor components as an enhancement in order to provide more flexibility, faster start-up, lower emissions and higher efficiency. The M501JAC can achieve a record breaking efficiency, greater than 63% in combined cycle.

  • A compressor shaft end drive reduces the effect of thermal expansion on alignment

  • A rotor with simple single-shaft two-bearing support

  • An axial flow exhaust structure advantageous in combined cycle plant layouts

  • Horizontally split casings that facilitate field removal of the blades with the rotor in place

  • A rotor structure has bolt-connected discs with the torque pins in the compressor section and CURVIC couplings in the turbine section to ensure stable torque transmission

M501JAC Specifications:

  • Power (MW)
    425
  • Fuel
    Natural Gas
  • Frequency (Hz)
    60
  • Ramp-up (MW/min)
    42
  • Efficiency (%)
    44
  • Heat-rate (kJ/kWh)
    8182
  • Speed (RPM)
    3600
  • Exhaust mass flow (kg/s)
    738
  • Exhaust Temperature (C)
    649
Mitsubishi Hitachi Power Systems
Manufacture

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