The development of gas turbines, which Mitsubishi Hitachi Power Systems, Ltd. (MHPS) has
continued to pursue, contributes to society in terms of global environmental conservation and a
stable energy supply. MHPS leverages its abundant gas turbine operation experience and takes
advantage of its extensive advanced technology research on "Component Technology Development
for 1,700°C Class Ultra-High-Temperature Gas Turbines" for the national project. The company
has been participating in this project since 2004. Recent years' achievements include the
demonstration of a gas turbine combined cycle (GTCC) efficiency in excess of 62% by increasing
the turbine inlet temperature to the 1,600°C class in the M501J in 2011. Up to the present time, 25
units of the "J" have been brought into commercial operation, achieving a cumulative operational
time of more than 470,000 hours. The Latest M701F incorporates "J" gas turbine technologies,
already applied to actual equipment, for efficiency improvement. It also applies air-cooled
combustor technologies successfully validated in the GAC, for increased flexibility. The 1st unit
started commercial operation in 2015 and currently 4 units have accumulated more than 52,000
actual operating hours collectively. On the other hand, MHPS offers an upgrade program for
existing F-series gas turbines that will result in higher performance and reliability by applying
proven technology developed for new frames, in parallel with the development of new frames. This
paper presents the features of the latest M701F gas turbine and the upgrades for existing F-series
gas turbines.
