Kawasaki Heavy Industries (KHI) launched the M5A gas turbine with a rated output of 4.7MW and 32.6% of thermal efficiency at ISO operating conditions. This gas turbine was designed for combined heat and power application (CHP) with dry low emission (DLE) and the features are that it is compact and light-weight. It also has high efficiency (highest in class), suitable exhaust temperature for steam production and achieved the lowest level of exhaust emissions by using proven DLE technologies originating from other recent KHI gas turbines. The design philosophy was successfully applied to be based on previous reliable gas turbine structure and materials as well as using the state-of-the-art technology about aerodynamics and the cooling. The in-house verification tests have been conducted since 2016 to confirm design targets for performance, emissions, durability and operability. This paper describes the development process of M5A and includes technical features and validation test results.
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