Mitsubishi Gas Turbines

Through four generations of development, Mitsubishi gas turbines have progressively refined the state-of-the-art in turbine design, materials and operating performance.

F-Series Turbine

The F-Series turbine has been the reliable workhorse of the Mitsubishi fleet since its introduction in 1989.

G-Series Turbine

Mitsubishi’s G-Series turbine rotors feature full-3D modeled blades for optimized flow and superior rotor integrity.

Gas Turbines from Mitsubishi: Best-in-Class Performance, Best-of-Breed Design

Mitsubishi 50Hz and 60Hz gas turbines are the worldwide standard for output, efficiency, reliability and availability. The reason: Our unyielding commitment to evolutionary design principles that balance thoughtful innovation with proven core technologies and features.

From our earliest D-Series turbines to the world’s first commercial application of cooling-steam in large industrial gas turbines such as our G-series, Mitsubishi has relentlessly challenged the limits of gas turbine design and manufacture. And today – through our global network of R&D resources and full-scale verification facility at Takasago, Japan – we continue to be first-to-test and first-to-market with the defining innovations of tomorrow.

M501F/M701F – The Legend

With more than 115 units installed and being commissioned, and over 1.5 million hours of collective operation in the field, Mitsubishi’s F-Series turbines are among the world’s most proven gas turbine designs. Progressive design updates and enhancements have helped to keep the Mitsubishi F-Series at the top of its class for more than a decade.

Design features include:

Two-bearing single-shaft construction
Cold-end power drive
Axial exhaust
4-stage turbine
Individual combustors
Single Row 1 vanes
Cooled & filtered rotor air
Double shell casing construction prevents rubbing between stationary and rotating parts.
High strength durable and repairable hot gas path materials instead of more expensive single crystal parts.
Advanced pre-mix DLN combustor technology with 15 ppm NOx emissions.
Active on-line combustor sensor technology for protection against combustion flame instabilities.

* Single-shaft

UPDATED F-SERIES PERFORMANCE
		M501F3	M701F3
Power Output	MW	185	270
Heat Rate-LHV	kcal/kWh	2,326	2,250
CC Output*	MW	279	399
CC Heat Rate-LHV*	kcal/kWh	1,531	1,511

, one GT, one ST, one generator

M501G/M701G – The New Standard

The world’s first G-Series turbines are also the world’s best-performing turbines. Mitsubishi’s M501G (254MW, 60Hz) and M701G (334MW, 50Hz) achieve the highest inlet temperatures (~1500° C) available, as well as the highest efficiencies.

Based on proven F-Series technologies, Mitsubishi’s G-Series turbines incorporate a wide range of design enhancements, including an improved compressor design, steam-cooled combustor, advanced internal cooling schemes for better cooling effectiveness of airfoils and advanced seals for preventing secondary losses.

Design features include:

Multiple circular arc airfoils in compressor blades
Controlled diffusion airfoils in compressor blades
Full-coverage film cooling of turbine blades
Thermal barrier coating on turbine blades
Directionally solidified cast blades
Tangential on-board injection of cooled and filtered compressor discharge air.
State-of-the-art seal technology.
Advanced dual fuel pre-mix combustion with steam-cooled combustor.

G-SERIES PERFORMANCE
		M501G	M701G
Power Output	MW	254	334
CC Output*	MW	371	484
CC Heat Rate-LHV*	kcal/kWh	1,482	1,482

* Single-shaft, one GT, one ST, one generator

M701G2 – The Next Generation

Mitsubishi takes G technology one step further with a second-generation G-Series turbine that offers near-H performance. The M701G2 incorporates a number of H-Series advances including steam-cooling of both the combustor transitions and turbine blade rings, as well as an advanced dry low-NOx combustion system and an improved compressor that delivers an impressive 21:1 pressure ratio with only 14 stages.

The M701G2 combines the field-proven pedigree of a G with near-H output and efficiency – 334MW/39.5% in simple cycle applications, and 489MW/58.7% in combined cycle configurations.

H-Series and Beyond

The first operational H-Series gas turbine to complete verification load testing in a combined cycle power plant was successfully demonstrated by Mitsubishi in 2001. The H turbine design is novel in its use of cooling steam to cool the combustor, hot gas path parts and the rotor. Like its G-series predecessors, however, the H-Series relies on time-tested conventional industrial gas turbine materials for hot gas path components and rotors, rather than single crystal blades and vanes and inconel rotor materials that can complicate repairs and increase lifecycle costs.

The result is an exceptional marriage of proven and new technologies that pushes the boundaries of high-temperature, high-pressure, high-efficiency turbine performance.