DEVELOPMENT OF 300 kW CLASS CERAMIC GAS TURBINE (CGT302)

The Japanese Ministry of International Trade and Industry (MITI) is promoting the Ceramic Gas Turbine (CGT) project for energy saving technology development under the ‘New Sunshine project’. The objective of this project is to develop a 300 kW ceramic gas turbine with 42% thermal efficiency at 1350°C turbine inlet temperature.Three types of CGT are under development for individual purposes and concepts. CGT302 is the recuperated two-shaft ceramic gas turbine for cogeneration use.Ceramic materials have many advantages in the application of high temperature gas turbines, but there are still several problems of practical use. Therefore, we introduce the unique technology of monolithic - FRC hybrid concept to fabricate large ceramic components, stress free supporting structure, joining technology, etc. The all ceramic components of the 1200°C CGT were successfully fabricated and engine tests are in progress.This paper will describe the technologies of the CGT302 development and results of engine tests.Copyright © 1994 by ASME