IGTC-69 Design Study of Cooled Blades for the AGTJ-100B Using Pre-Cooling System(Session B-8 TURBINE COOLING (AGTJ-100))

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Recently, with turbine inlet temperatures (T.I.T.) being steadily increased in order to improve gas turbine performance, the Engineering Research Association for Advanced Gas Turbines has succeeded in the development of a gas turbine with a combined thermal efficiency of over 50% (L.H.V. base) in the 1300℃ T.I.T. class, the first such gas turbine for power generation to be developed in the world. Accompanying the increases in T.I.T., attention has been paid to the development of heat-resistance in turbine blades, employing not only the new superalloys but also new cooling systems, with a concomitant requirement to design cooled blades which can withstand a minimum flow of cooling air. This paper presents the blade design concept using the pre-cooling system developed for the cooled blades of the high-pressure turbine and describes the component tests, as measures toward attaining the final target of a combined thermal efficiency of over 55% for the AGTJ-100B.
公益社団法人日本ガスタービン学会の論文