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RESEARCH PAPERS: Gas Turbines: Electric Utilities

The Advanced Cooling Technology for the 1500°C Class Gas Turbines: Steam-Cooled Vanes and Air-Cooled Blades

[+] Author and Article Information
H. Nomoto, A. Koga, S. Ito

Heavy Apparatus Engineering Lab, Toshiba Corporation, Yokohama, Japan

Y. Fukuyama, F. Otomo

Research and Development Center, Toshiba Corporation, Kawasaki, Japan

S. Shibuya

Thermal Power Plant Eng. Dept., Toshiba Corporation, Yokohama, Japan

M. Sato, Y. Kobayashi, H. Matsuzaki

Tohoku Electric Power Co., Inc., Sendai, Japan

J. Eng. Gas Turbines Power 119(3), 624-632 (Jul 01, 1997) (9 pages) doi:10.1115/1.2817030 History: Received February 01, 1996; Online November 19, 2007

Abstract

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.

Copyright © 1997 by The American Society of Mechanical Engineers
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