M501F Series

Gas Turbines

Standalone Gas Turbine Output

180 MW class
Combined Cycle Output

280 MW class / 580 MW class
Fuel Diversification

Compatible with blast furnace gas (BFG)

Gas turbines for 60 Hz power generation matched with diversification of fuels

In 1991, Mitsubishi Power developed the M501F Series gas turbines for 60 Hz power generation. The following year, it developed the M701F Series for 50 Hz power generation as a series with similar design.

Since then, Mitsubishi Power has continued to improve the design of F Series gas turbines. While introducing advanced elemental technologies and material technologies verified with the G Series with a proven track record, the F Series attains continuous performance enhancement.

Features
Specifications
Layout
Delivery Records

Overall Design

The gas turbine unit is based on the basic structure adopted in the early 1970s that has accumulated a track record of at least 40 years. Its main features are as follows:

A compressor shaft end drive reduces the effect of thermal expansion on alignment
A rotor with simple single-shaft two-bearing support
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
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

Compressor

Variable inlet guide vanes ensure operational stability at the start-up and enhanced performance at partial load in combined cycle operation.

Combustor

A premixing low NOx combustor is composed of one pilot burner and eight main burners that surround it. The compressor has an air bypass mechanism that enables fuel-air ratio regulation in the combustion region.

Turbine

Rotating blades at the first two stages are free-standing, while those at the third and fourth stages are integral shroud blades.

Stationary vanes are supported by blade rings that are independent at individual stages to prevent turbine casings from being affected by thermal expansion.

Configuration

		M501F
Compressor	Number of Stages	16
Combustor	Number of Cans	16
Combustor	Cooling Method	Air Cooled
Turbine	Number of Stages	4
Rotor	Number of Rotors	1
Output Shaft		Cold End
Rated Speed		3,600 rpm
Gas Turbine	Approx. L × W × H	11.6 × 5.2 × 4.9 m
Gas Turbine	Approx. Weight	225 ton

Simple Cycle Performance

		M501F
Frequency		60 Hz
ISO Base Rating		185.4 MW
Efficiency		37.0 %LHV
LHV Heat Rate		9,740 kJ/kWh
LHV Heat Rate		9,230 Btu/kWh
Exhaust Flow		468 kg/s
Exhaust Flow		1,032 lb/s
Exhaust Temperature		613 °C
Exhaust Temperature		1,136 °F
Exhaust Emission	NOx	25 ppm@15%O₂
Exhaust Emission	CO	10 ppm@15%O₂
Turn Down Load		75 %
Ramp Rate		12 MW/min
Starting Time		30 minutes