Development of Key Technologies for the Next Generation Gas Turbine

Abstract

In order to prevent global warming, Kyoto Protocol has come into effect in February 2005. It is necessary for Japan to reduce 6% of amount of CO2 emission 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 1700 degC gas turbine. 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 coating; (5) High efficiency high loading turbine; (6) High pressure high efficiency compressor. Current status of the technology developments is reviewed.