It is very essential to raise the thermal efficiency of combined cycle plants from the viewpoint of energy saving and environmental protection. Tohoku Electric Power Co., Inc., and Toshiba Corporation in Japan have jointly studied the next generation of combined cycle systems using 1500°C class gas turbine. A promising cooling technology for the vanes using steam was developed. The blades are cooled by air, adopting the impingement cooling, film cooling, and so on. The cooling effectiveness was confirmed both for the vanes and the blades using a hot wind tunnel. This paper describes the design features of the vanes and the blades, and the results of the verification tests using the hot wind tunnel.

Amagasa, S., Otomo, F., Fukuyama, Y., et al., 1991, “Testing for a Steam Cooling Gas Turbine Nozzle,” JSME Annual Conf. No. 920–17B, pp. 408–410 [in Japanese].
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Calculation of Transitional Boundary Layers With an Improved Low-Reynolds-Number Version of the k-ε Turbulence Model
ASME Journal of Turbomachinery
, Vol.
, pp.
Blazek, W. S., Schiling, W. F., and Schilke, P. W., 1981, “Water-Cooled Gas Turbine Monometallic Nozzle Development,” ASME Journal of Engineering for Power, Vol. 103, No. 4.
Corman, J. C., 1995, “H Gas Turbine Combined Cycle Power Generation System for the Future,” Proc. Yokohama Gas Turbine Congress.
Fukue, I., 1995, “A New Generation of Advanced Gas Turbine,” Proc. Yokohama Gas Turbine Congress.
Fukuyama, Y., and Araki, T., 1989, “Testing of Water-Cooled Nozzle for High Temperature Gas Turbine,” Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics, pp. 1019–1026.
Fukuyama, Y., Otomo, F., et al., 1994, “Experiments on the Film Cooling Effectiveness of Bluff Head Gas Turbine Vane,” Proc. 22nd Annual Gas Turbine Conf, pp. 55–62 [in Japanese].
Fukuyama, Y., Otomo, F., et al., 1995, “Prediction of Vane Surface Film Cooling Effectiveness Using Compressible Navier-Stokes Procedure and K-ε Turbulence Model With Wall Function,” ASME Paper No. 95-GT-25.
Matsuzaki, H., et al., 1992, “New Advanced Cooling Technology and Materials of the 1500°C Class Gas Turbine,” ASME Paper No. 92-GT-240.
Yamamoto, H., Yamamoto, K., et al., 1995, “Material Evaluation of Large Single Crystal and Directionally Solidified Bucket Castings for Advanced Land-Based Gas Turbines,” ASME Paper No. 95-GT-449.
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