Yoshiaki Tsukuda

Development and Testing of the 13MW Class Heavy Duty Gas Turbine MF-111

A new 13 MW class heavy duty gas turbine “MF-111” with the combustor outlet temperature of 1250°C (1523 K) was developed and tested.The thermal efficiency of MF-111 is designed to be 32% for simple-cycle and 45% in combined-cycle operation.MF-111 has single-shaft configuration, 15-stage axial flow compressor, 8 cannular type combustors and 3-stage axial flow turbine.Advanced cooling technology was incorporated for the turbine and the combustor design to be capable of higher combustor outlet temperature.The prototype was shoptested at full load in April, 1986. The performance and the metal temperatures of hot parts were confirmed to well satisfy the design goal. The first machine of MF-111 started the commercial operation from August, 1986 and has logged satisfactory operations.© 1987 ASME

Tsunami Simulation by 3D Model Around a Power Station Due to the 2011 Tohoku Earthquake

In the 2011 Tohoku Earthquake, many structures were destroyed by the tsunami whose magnitudes were much larger than the design level. Tsunami defense structures in coastal areas will need reinforcement in the future, and for that reason it is important to evaluate tsunami behavior and resulting tsunami force. This study analyzes tsunami transformation around a Haramachi thermal power station which suffered serious damage by the tsunami due to the 2011 Tohoku Earthquake and which has complex topography and building layout. A three-dimensional (3D) tsunami simulation is carried out for a surrounding region of the Haramachi thermal power station using boundary conditions of the water surface elevation and flow velocity obtained from a two-dimensional (2D) tsunami simulation by a nonlinear shallow water model. Using these boundary conditions, the computer fluid dynamic model FLUENT is employed to simulate the tsunami behavior around the Haramachi thermal power station. The validity of the predictions is examined by comparison with actual traces of tsunami inundation depths (I.D.).

Development of the Next Generation 1500°C Class Advanced Gas Turbine for 50Hz Utilities

The 701G1 50Hz Combustion Turbine continues a long line of large heavy-duty single-shaft combustion turbines by combining the proven efficient and reliable concepts of the 501F and 701F. The output of the 701G1 is 255MW with combined cycle net efficiency of over 57%. A pan of component development was conducted under the joint development program with Tohoku Electric Power Co., Inc. and a part of the design work was carried out under the cooperation with Westinghouse Electric Corporation in the U.S.A. and Fiat Avio in Italy.This gas turbine is going to be installed to “Higashi Niigata Power Plants NO.4” of Tohoku Electric Power Co., Inc. in Japan. This plant will begin commercial operation in 1999.This paper describes some design results and new technologies in designing and developing this next generation 1500°C class advanced gas turbine.Copyright

Uprated 501F Gas Turbine, 501FA

This paper introduces the engineering approach taken in developing the 501FA gas turbine, which is an uprated version of the existing 501F 150MW class gas turbine. The concepts and procedures which were utilized to uprate this gas turbine are also presented. To achieve better performance, new techniques were incorporated which reflected test results and operating experience. No advanced technologies were introduced. Instead, well experienced techniques are adopted so as not to deteriorate reliability. Improvement of the performance was mainly achieved mainly due to the reduction of cooling air. Tip clearances were also optimized based on shop test and field results.Copyright

Development of 6MW-Class Gas Turbine MF-61

The MF-61 is a 6MW-class heavy duty gas turbine which was developed for cogeneration application. A single can type combustor with wide fuel flexibility and advanced high efficiency compressor has been adopted for this engine. The combustor outlet temperature is designed at 1150°C. This paper describes the design concepts of the machine, the design features, and the verification programs carried out in Takasago, Japan. The results of the full load shop test verified that the performance, the mechanical characteristic and the emission well satisfied the initial design goals.Copyright