scholarly journals Current Status of Ceramic Gas Turbine (CGT302)

1998 ◽  
Author(s):  
Hirotake Kobayashi ◽  
Tetsuo Tatsumi ◽  
Takashi Nakashima ◽  
Isashi Takehara ◽  
Yoshihiro Ichikawa
Keyword(s):  
Gas Turbine ◽  
Thermal Efficiency ◽  
Technology Development ◽  
Development Program ◽  
Point Of View ◽  
Current Status ◽  
Fiscal Year ◽  
Inlet Temperature ◽  
Development Organization ◽  
New Energy

In Japan, from the point of view of energy saving and environmental protection, a 300kW Ceramic Gas Turbine (CGT) Research and Development program started in 1988 and is still continuing as a part of “the New Sunshine Project” promoted by the Ministry of International Trade and Industry (MITT). The final target of the program is to achieve 42% thermal efficiency at 1350°C of turbine inlet temperature (TIT) and to keep NOx emissions below present national regulations. Under contract to the New Energy and Industrial Technology Development Organization (NEDO), Kawasaki Heavy Industries, Ltd. (KHI) has been developing the CGT302 with Kyocera Corporation and Sumitomo Precision Products Co., Ltd. By the end of the fiscal year 1996, the CGT302 achieved 37.0% thermal efficiency at 1280°C of TIT. In 1997, TIT reached 1350°C and a durability operation for 20 hours at 1350°C was conducted successfully. Also fairly low NOx was proved at 1300°C of TIT. In January 1998, the CGT302 has achieved 37.4% thermal efficiency at 1250°C TIT. In this paper, we will describe our approaches to the target performance of the CGT302 and current status.

Current Status of 300 kW Class Industrial Ceramic Gas Turbine R&D in Japan

1994 ◽  
Author(s):  
Takuki Murayama ◽  
Kunihiro Nagata ◽  
Masanobu Taki ◽  
Hisao Ogiyama
Keyword(s):  
Gas Turbine ◽  
Thermal Efficiency ◽  
Technology Development ◽  
Current Status ◽  
Inlet Temperature ◽  
Turbine Inlet Temperature ◽  
Development Organization ◽  
Advanced Technologies ◽  
Great Progress ◽  
New Energy

Advanced technologies in Ceramics Gas Turbine (CGT) are expected to make a great progress in energy conservation, anti-pollution, and fuel-diversification. In Japan, R&D’s in industrial usage 300 kW class CGT have been advanced under a national project entitled “New Sunshine Program”, under the subsidy of Agency of Industrial Science and Technology (AIST), Ministry of International Trade and Industry (MITI) through the period of FY1988–1996. In this project, three different type prototypes of the CGT are under development through New Energy and Industrial Technology Development Organization (NEDO). Over the last six years, the basic designs have been completed and the ceramic elements such as turbine rotors, scrolls, and combustors were successfully fabricated. To check up the whole progress of the project, an interim evaluation is scheduled by the end of FY1993. Toward this evaluation, each prototype has been programmed to demonstrate 1200°C of Turbine Inlet Temperature (TIT) and prove more than 30% of thermal efficiency. (The ultimate target in the project is 42% of thermal efficiency at 1350°C TIT.) They would also show enough environmental adaptability. In this paper, overall status of the development in the 300kW CGT project is reviewed and the items in the interim evaluation are explained.

Development of 300kW Class Ceramic Gas Turbine (CGT303)

1994 ◽  
Author(s):  
Issel Ohhashi ◽  
Sadao Arakawa
Keyword(s):  
Gas Turbine ◽  
Technology Development ◽  
Maximum Output Power ◽  
Development Program ◽  
Maximum Output ◽  
Power Generator ◽  
Construction Machinery ◽  
Development Organization ◽  
New Energy ◽  
Ceramic Components

CCT303 is a two-shaft regenerative ceramic gas turbine with rotary heat exchangers for the purpose of mobile power generator. It is also widely adaptable for industrial machinery and construction machinery as well. The development program of CGT303 is funded by New Energy and Industrial Technology Development Organization (NEDO). The maximum output power of 300kW and thermal efficiency of 42% at TiT 1350C are the objectives of this development. The high TiT requires for the material of all gas passage components to use ceramics which are designed appropriately to keep sufficient strength by using sophisticated computer analysis. Hot spin tests on ceramic turbine rotors and thermal shock tests on stationary ceramic components have been carried out to prove their strength. The paper covers the design concept of CGT303 and results of analysis.

scholarly journals Current Status of Ceramic Gas Turbine R&D in Japan

1989 ◽  
Author(s):  
Kiichiro Yamagishi ◽  
Yukio Yamada ◽  
Yoshihiro Echizenya ◽  
Shoji Ishiwata
Keyword(s):  
Gas Turbines ◽  
Technology Development ◽  
Ceramic Materials ◽  
Current Status ◽  
Inlet Temperature ◽  
Development Organization ◽  
New Energy ◽  
Ceramic Components ◽  
Preliminary Study ◽  
Engine Components

The Japanese Ministry of International Trade and Industry (MITI) has started two nine-year national R&D projects for small-capacity ceramic gas turbines (CGTs) from 1988, following several preliminary investigations of the technical aspects and of the social impacts of CGTs. Planned 300kW industrial ceramic gas turbines are to be used for co-generation and mobile power generation. The goals are 42% and higher for the thermal efficiency at the turbine inlet temperature of 1350°C, and the emission from the exhaust gas should meet the regulatory values. Also ceramic components have the goals of 400MPa for the minimum flexure strength at 1500°C, and 15 MPam1/2 for the fracture toughness. New Energy and Industrial Technology Development Organization (NEDO) is the main contractor, and three groups of private industries are the subcontractors for 300kW industrial CGT project. Three national research institutes are involved in the projects to conduct supportive research of ceramic materials and engine components as well as to carry out assessment of the materials and engine systems developed by the private industries. The development of 100kW CGT for automotive use was also recommended in the above stated investigations and a two-year preliminary study started in 1988. The full-scale 100kW automotive CGT R&D project is scheduled to start in 1990 after the preliminary study. Japan Automobile Research Institute, Inc. (JARI) is the main contractor for 100kW automotive CGT project with the cooperation of three automobile companies.

scholarly journals Current Status of CGT302 (Progressing to Final Phase)

1997 ◽  
Author(s):  
Yoshihiro Ichikawa ◽  
Tetsuo Tatsumi ◽  
Takashi Nakashima ◽  
Isashi Takehara ◽  
Hirotake Kobayashi
Keyword(s):  
Thermal Efficiency ◽  
Operating Time ◽  
Development Program ◽  
Current Status ◽  
Fiscal Year ◽  
Inlet Temperature ◽  
Final Phase ◽  
Gas Generator ◽  
Power Turbine ◽  
Air Valve

In Japan, a 300kW Ceramic Gas Turbine (CGT) Research and Development program was begun in 1988 as a part of “the New Sunshine Project” promoted by the Ministry of International Trade and Industry (MITI). The final target of this program is to achieve 42% thermal efficiency at 1350°C turbine inlet temperature (TIT). Kawasaki Heavy Industries, Ltd. (KHI) has been taking part in this program developing the CGT302 (a regenerative two-shaft CGT) with Kyocera Corporation (KC) and Sumitomo Precision Products Co., Ltd. (SPP). Now the final phase of the Pilot CGT is underway. By the end of the fiscal year 1995, the CGT302 achieved 33.1% thermal efficiency at 1200°C TIT, and remarkably low NOx emissions using a premixed lean combustor equipped with a variable air valve. By January 1997, thermal efficiency was increased to 37.0% at 1282°C and fairly low NOx was recorded at 1250°C. The engine rotational speeds were reduced to avoid foreign object damage (FOD). Accordingly, the compressor, gas generator turbine (GGT), and power turbine (PT) blade airfoils were redesigned. Engine tests have been ongoing to accumulate total engine operating time and thereby confirm measured performance, access durability, and identify needed areas of improvement.

Development and Evaluation of Ceramic Components for Gas Turbine

2002 ◽  
Author(s):  
Takero Fukudome ◽  
Sazo Tsuruzono ◽  
Wataru Karasawa ◽  
Yoshihiro Ichikawa
Keyword(s):  
High Temperature ◽  
Silicon Nitride ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
Technology Development ◽  
Inlet Temperature ◽  
Combustion Gas ◽  
Development Organization ◽  
Nitride Material ◽  
Ceramic Components

An 8000 kW class Hybrid Gas Turbine (HGT) project, administered by the New Energy and Industrial Technology Development Organization (NEDO), has been ongoing since July of 1999 in Japan. Targets of this project are improvement in thermal efficiency and output power by using ceramic components, and early commercialization of the gas turbine system. The ceramic components are used for stationary parts subjected to high temperature, such as combustor liners, transition ducts, and first stage turbine nozzles. Development of the gas turbine is conducted by Kawasaki Heavy Industries, Ltd. (KHI), to achieve the Turbine Inlet Temperature (TIT) of 1250°C, thermal efficiency of 34%, NOx emission less than standard regulation values, and 4,000 h engine durability. Kyocera is in charge of the development and evaluation of the ceramic components. Recently, recession of the Si based ceramic materials under the combustion gas is the focus of attention to improve the reliability of ceramic components for gas turbine. For the HGT project, the silicon nitride material (SN282 : silicon nitride material produced by Kyocera Corporation) is used for the components subjected to high temperature. The SN282 was evaluated under the combustion gas, and clear recession was observed. Our technology of the Environmental Barrier Coating (EBC) is under development to obtain reliable heat resistive SN282 components, against the recession by combustion gas. Reliability of the SN282 with EBC has been evaluated by exposure and hydrothermal corrosion test. Ceramic components made of SN282 with EBC will be also evaluated by a proof engine test of 4,000 h, which starts in the spring of 2002.

Development and Evaluation of Ceramic Components for 8000-kW Class Hybrid Gas Turbine

2001 ◽  
Author(s):  
Sazo Tsuruzono ◽  
Makoto Yoshida ◽  
Toshifumi Kubo ◽  
Takashi Ono ◽  
Takero Fukudome
Keyword(s):  
High Temperature ◽  
Silicon Nitride ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
Technology Development ◽  
Tensile Creep ◽  
Development Organization ◽  
New Energy ◽  
Ceramic Components

An 8000 kW class hybrid gas turbine (HGT) project, administered by the New Energy and Industrial Technology Development Organization (NEDO) and sponsored by the Ministry of International Trade and Industry (MITI), has been started in July 1999 in Japan[1]. The target of this project is improvement in thermal efficiency and output power by using ceramic components, and earlier commercialization of the gas turbine system. Ceramic components are used for stationary parts subjected to high temperature, such as combustor liners, transition ducts, and first stage turbine nozzles. The gas turbine development was conducted in cooperation with Kawasaki Heavy Industries, Ltd. (KHI). Kyocera started a study on fabricating the ceramic HGT components after evaluating their shape, placement, and fabrication methods. For these ceramic components, we are using the SN282 silicon nitride material developed and used for ceramic gas turbine components in the previous ceramic gas turbine project (300kW CGT)[2-4]. We have started to accumulate the strength evaluation data, using test bars cut from the aforementioned components, and begun long term tensile creep testing to confirm the reliability of the ceramic components.

scholarly journals Current Status of Industrial and Automotive Ceramic Gas Turbine R&D in Japan

1991 ◽  
Author(s):  
Soichi Nagamatsu ◽  
Kazuyuki Mizuhara ◽  
Yukio Matsuda ◽  
Akio Iwanaga ◽  
Shoji Ishiwata
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Technology Development ◽  
Ceramic Materials ◽  
Current Status ◽  
Inlet Temperature ◽  
Development Organization ◽  
Design Concepts ◽  
Ceramic Components ◽  
Engine Components

The current status of Japan’s national Ceramic Gas Turbines (CGTs) projects is overviewed. The Japanese Ministry of International Trade and Industry (MITI) is conducting two national R&D projects on CGT. These include a project on 300kW industrial CGTs for co-generation and mobile power generation use and a project on 100kW CGT for automotive use. The 300kW project was started in 1988, and is scheduled to develop three kinds of CGTs over nine years. The New Energy and Industrial Technology Development Organization (NEDO) is the main contractor, and three groups of private industries are sub contractors. Three national research institutes are involved in the project to conduct supportive research of ceramic materials and engine components. The 100kW project has started in 1990, and is scheduled to develop a single shaft automotive CGT over seven years. Petroleum Energy Center (PEC) and JARI are the main contractors with the cooperation of several petroleum and automotive companies. The goals for the two projects are 42% and higher for thermal efficiency at a turbine inlet temperature of 1350C. Such targets could not be achieved without applying high temperature ceramics to the engine components. Therefore many R&D objectives are directed towards developing the ceramic components which have a higher flexure strength and fracture toughness. Currently, 300kW base metal gas turbine engines are being developed to prove the design concepts. Blade shapes suitable to ceramics are being studied by the FEM method. Forming and manufacturing large components are also being studied, and some ceramics components have been successfully made.

Research and Development of Ceramic Gas Turbine (CGT302)

1996 ◽  
Author(s):  
Isashi Takehara ◽  
Isao Inobe ◽  
Tetsuo Tatsumi ◽  
Yoshihiro Ichikawa ◽  
Hirotake Kobayashi
Keyword(s):  
Gas Turbine ◽  
Thermal Efficiency ◽  
Intermediate Stage ◽  
Metal Plate ◽  
Pollutant Emission ◽  
Current Status ◽  
Fiscal Year ◽  
Turbine Engines ◽  
Inlet Temperature ◽  
Ceramic Components

The ongoing Japanese Ceramic Gas Turbine (CGT) project, as a part of the New Sunshine Project funded by the Ministry of International Trade and Industry (MITI), aims to achieve higher efficiency, lower pollutant emission, and multi-fuel capability for small to medium sized gas turbine engines to be used in co-generation systems. The final target of this project is to achieve a thermal efficiency over 42% at a turbine inlet temperature (TIT) of 1350°C. Under this project, Kawasaki Heavy Industries (KHI) is developing the CGT302 (a regenerative twin-spool CGT). The CGT302 has several unique features as follows: simple-shaped ceramic components, KHI’s original binding system for turbine nozzle segments, stress-free structure using ceramic springs and rings, etc. In addition to these features, a high turbine tip speed and a metal plate fin recuperator were adopted. At the end of the fiscal year 1994, an intermediate appraisal was carried out, and the CGT302 was recognized to have successfully achieved its target. The CGT302 endurance test at the intermediate stage required 20 hours’ operation of the basic ceramic engine. The actual testing accomplished 40 hours at over 1200°C TIT, which included 30 hours of operation without disassembling. The target thermal efficiency of 30% at 1200°C has almost been reached, 29.2% having been achieved. In 1995 the CGT302 recorded successfully 33.1% at 1190°C of TIT with no trouble. We will introduce the current status of R&D of the CGT302 and its unique features in this paper.

Development of 300 kW Class Ceramic Gas Turbine (CGT303)

1995 ◽  
Vol 117 (4) ◽  
pp. 777-782 ◽  
Author(s):  
I. Ohhashi ◽  
S. Arakawa
Keyword(s):  
Gas Turbine ◽  
Technology Development ◽  
Maximum Output Power ◽  
Development Program ◽  
Maximum Output ◽  
Power Generator ◽  
Construction Machinery ◽  
Development Organization ◽  
New Energy ◽  
Ceramic Components

CGT303 is a two-shaft regenerative ceramic gas turbine with rotary heat exchangers for the purpose of mobile power generator. It is also widely adaptable for industrial machinery and construction machinery as well. The development program of CGT303 is funded by the New Energy and Industrial Technology Development Organization (NEDO). The maximum output power of 300 kW and thermal efficiency of 42 percent at TiT 1350°C are the objectives of this development. The high TiT requires all gas passage components to be made of ceramics that are designed appropriately to keep sufficient strength by using sophisticated computer analysis. Hot spin tests on ceramic turbine rotors and thermal shock tests on stationary ceramic components have been carried out to prove their strength. The paper covers the design concept of CGT303 and results of analysis.

Research and Development of Ceramic Gas Turbine (CGT302)

1998 ◽  
Vol 120 (1) ◽  
pp. 186-190 ◽  
Author(s):  
I. Takehara ◽  
I. Inobe ◽  
T. Tatsumi ◽  
Y. Ichikawa ◽  
H. Kobayashi
Keyword(s):  
Gas Turbine ◽  
Thermal Efficiency ◽  
Intermediate Stage ◽  
Metal Plate ◽  
Pollutant Emission ◽  
Current Status ◽  
Fiscal Year ◽  
Turbine Engines ◽  
Inlet Temperature ◽  
Ceramic Components

The ongoing Japanese Ceramic Gas Turbine (CGT) project, as a part of the New Sunshine Project funded by the Ministry of International Trade and Industry (MITI), aims to achieve higher efficiency, lower pollutant emission, and multifuel capability for small to medium sized gas turbine engines to be used in cogeneration systems. The final target of this project is to achieve a thermal efficiency over 42 percent at a turbine inlet temperature (TIT) of 1350°C. Under this project, Kawasaki Heavy Industries (KHI) is developing the CGT302 (a regenerative twin-spool CGT). The CGT302 has several unique features: simple-shaped ceramic components, KHI’s original binding system for turbine nozzle segments, stress-free structure using ceramic springs and rings, etc. In addition to these features, a high turbine tip speed and a metal plate fin recuperator were adopted. At the end of the fiscal year 1994, an intermediate appraisal was carried out, and the CGT302 was recognized to have successfully achieved its target. The CGT302 endurance test at the intermediate stage required 20 hours’ operation of the basic ceramic engine. The actual testing accomplished 40 hours at over 1200°C TIT, which included 30 hours of operation without disassembling. The target thermal efficiency of 30 percent at 1200°C has almost been reached, 29.2 percent having been achieved. In 1995 the CGT302 successfully recorded 33.1 percent at 1190°C of TIT with no trouble. We will introduce the current status of R&D of the CGT302 and its unique features in this paper.

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