Abstract
As global warming becomes increasingly serious, Japan has committed to reduce the CO2 emission by 25% from 1990 levels in Japan with preconditions by the end of 2020. To reach such the difficult target, resources and energy utilizations should be more efficient than before. Tohoku Electric Power Company, Inc. (Tohoku-EPCO) has been adopting the cutting-edge gas turbines for combined cycle power plants to contribute to the reduction of energy consumption and pollutant emission. Now Tohoku-EPCO and Mitsubishi Heavy Industries, Ltd. (MHI) have started a study of next generation gas turbines to further improve the gas turbine combined cycle (GTCC) power plants efficiency. Tohoku-EPCO and MHI have invented a “closed circuit air cooling system” and a trial design of the closed circuit air cooled combustor is now being conducted as a collaborative project. Besides, the material technology development is being conducted for the further increase in the turbine Row 1 vane inlet temperature (TIT) in future.
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