Abstract
The Kyoto Protocol has come into effect in February 2005 in an effort to reduce global warming. It is necessary for Japan to reduce 6% of the total CO_2 emission of 1990 in Japan from 2008 to 2012. In such an environment, improvement of the thermal efficiency of the gas turbine for GTCC is highly required. Mitsubishi Heavy Industries, Ltd. participates in the national project developing 1700degC gas turbine technology. In this national project, selected component technologies are investigated in detail. Key technologies for 1700degC gas turbine are determined and under development such as, (1) Combustor with exhaust gas recirculation system, (2) Turbine cooling technology, (3) Super heat resistant material, (4) Thermal barrier coatings, (5) High efficiency high loading turbine and (6) High pressure high efficiency compressor. Current status of the technology developments is reviewed.
