Completion of a 1300°C class high efficiency gas turbine

In order to meet energy-saving needs, high-temperature, high-efficiency gas turbines are being developed for expanding the application of combined cycle power plants, where the exhaust heat of a gas turbine is collected and combined with a steam turbine, as well as gas turbine-cogeneration power plants combined with exhaust heat recovery and supply systems. A large-capacity model MS7001F having a firing temperature of 1260°C (hereinafter referred to as the model F7F) gas turbine is now being put to practical use in Japan. In addition, new techniques are being developed for producing high-efficiency gas turbines. For a high-efficiency design, an increase in the firing temperature is an essential requirement. To attain this, a new cooling technique for turbine blades is necessary, as well as adopting new materials, and developing a new technique for low NO1x (nitrogen oxides) combustor design conforming to the environmental emission standards and then verifying the application of the combustor. We have recently completed the first F7F gas turbine unit, and delivered it to the site after factory testing.