Development of Air-Cooled Ceramic Nozzles for a Power-Generating Gas Turbine
| Autor: | Toshiaki Tsuchiya, Y. Tsukuda, Yutaka Furuse, Mori Masahiko, Rintaro Chikami, Shin Yoshino |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Engineering
Turbine blade business.industry Mechanical Engineering Nuclear engineering Nozzle Energy Engineering and Power Technology Aerospace Engineering Mechanical engineering Thermal power station law.invention chemistry.chemical_compound Fuel Technology Nuclear Energy and Engineering Electrical resistance and conductance Silicon nitride chemistry law Cascade visual_art Thermal visual_art.visual_art_medium Ceramic business |
| Zdroj: | Journal of Engineering for Gas Turbines and Power. 118:717-723 |
| ISSN: | 1528-8919 0742-4795 |
| DOI: | 10.1115/1.2816986 |
| Popis: | The development of air-cooled ceramic nozzle vanes for a power-generating gas turbine has been reported. To make up the limited temperature resistance of present ceramic materials, the utilization of a small amount of cooling air has been studied for the first-stage nozzle vanes of a 1,500 C class gas turbine. A series of cascade tests were carried out for the designed air-cooled Si{sub 3}N{sub 4} nozzle vanes under 6 atm and 1,500 C conditions. It was confirmed that the maximum ceramic temperature can be maintained below 1,300 C by a small amount of cooling air. In spite of the increased thermal stresses from local cooling, all Si{sub 3}N{sub 4} nozzle vanes survived the cascade tests, including both steady-state and transients of emergency shutdown. The potential for an air-cooled ceramic nozzle was demonstrated for a 1,500 C class gas turbine application. |
| Databáze: | OpenAIRE |
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