OS-102 Ceramic Stationary Gas Turbine Development : Opportunities and Challenges(Organized Session 1: Ceramic Gas Turbines)
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概要
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The United States Department of Energy, Office of Industrial Technologies, has sponsored since 1992 the Ceramic Stationary Gas Turbine (CSGT) program at Solar Turbines Incorporated, with the objective to improve the performance of stationary gas turbines in cogeneration through the selective replacement of cooled metallic hot section components with uncooled ceramic parts. The Solar Centaur 50S engine, which operates at a turbine rotor inlet temperature (TRIT) of 1010℃ was selected for the developmental program. The program goals include an increase in the TRIT to 1121℃ accompanied by increases in thermal efficiency and output power. The component design and material selection have been definitized for the ceramic blades, nozzles and combustor liners. Each of these ceramic component designs were successfully tested in short term engine tests in the Centaur 50S engine test cell facility at Solar at the baseline TRIT of the all-metal engine of 1010℃. The ceramic blades and combustor liners have also been tested in a field test at an industrial cogeneration site. In excess of 8,000hrs of field testing has been conducted as of August, 1999. Cumulative operating time was 5016hrs for an enhanced SiC/SiC continuous fiber-reinforced ceramic composite (CFCC) combustor liner and 1052hrs for a set of first stage AS-800 silicon nitride rotor blades. The ceramic combustor liners have lowered emissions to less than 15 ppmv NO_x in the non-optimized turbine. As a result of the successful program the CFCC combustion system will be incorporated into two Centaur 50S engines which provide power for a textile manufacturing facility in the State of Massachusetts. Long term durability against oxidation, adequate impact resistance, robust metal-ceramic interface designs, and high component cost are key issues to be resolved before the ceramic technology will become widely accepted by the designers and end users of gas turbines. This paper discusses the background of the CSGT program, the achievements to-date and challenges remaining with the ceramic design, materials selection, component testing, in-house engine testing, field testing, and component characterization.
- 公益社団法人日本ガスタービン学会の論文
- 1999-11-14
著者
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Roode Mark
Solar Turbines Incorporated
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Gates Stephen
Solar Turbines Incorporated
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PRICE Jeffrey
Solar Turbines Incorporated
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WASLO Stephen
US Department of Energy, Chicago Operations Office
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HOFFMAN Patricia
US Department of Energy, Office of Industrial Technologies
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Waslo Stephen
Us Department Of Energy Chicago Operations Office
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Hoffman Patricia
Us Department Of Energy Office Of Industrial Technologies