Final report of the key technology development program for a next-generation high-temperature gas turbine

There is a strong demand for efficient and clean power-generating systems to meet recent energy-saving requirements and environmental regulations. A combined cycle power plant is one of the best solutions to the above. Tohoku Electric Power Co., Inc., and Mitsubishi Heavy Industries, ltd., have jointly developed three key technologies for a next-generation 1,500 C class gas turbine. The three key technologies consist of: (1) high-temperature low-NO{sub x} combustion system, (2) row 1 turbine vane and blade with advanced cooling schemes, and (3) advanced heat-resistant materials; (2) and (3) were verified by HTDU (High Temperature Demonstration Unit). This paper describes the results of the above-mentioned six-year joint development.