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.

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.

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.

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.

A New High Efficiency Gas Turbine for Mechanical Drives

1998 ◽  
Author(s):  
Jay M. Wilson ◽  
J. William Lindenfeld ◽  
Kenna D. Vendler ◽  
Mike T. Todman ◽  
Brian Whinray ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Thermal Efficiency ◽  
Turbine Unit ◽  
High Efficiency ◽  
Development Program ◽  
Gas Generator ◽  
Gas Turbine Unit ◽  
Cost Of Ownership ◽  
Efficiency Measures ◽  
Power Turbine

This paper discusses the design and development program that is taking place to enable the availability in mid 1999 of a unit designated the Coberra 6761. This features the aircraft derivative Rolls-Royce RB211-24G upgrade gas generator and a new close coupled Cooper-Bessemer RT61 three stage power turbine. The paper describes the upgrade of the gas turbine from 28.4MW (38 000 SHP) to 31.8MW (42 600 SHP) ISO output power at over 40% thermal efficiency. Measures taken to maximize reliability and maintainability while reducing cost of ownership are described. The improvements in the gas generator compressors and turbines are detailed. The new design features of the power turbine are reviewed including a new support structure, modular service features and 3D orthogonal airfoil designs. The forthcoming validation program for the entire gas turbine unit is also discussed.

Summary of CGT302 Ceramic Gas Turbine Research and Development Program

2000 ◽  
Author(s):  
Isashi Takehara ◽  
Tetsuo Tatsumi ◽  
Yoshihiro Ichikawa
Keyword(s):  
Research And Development ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
High Efficiency ◽  
Development Program ◽  
Pollutant Emissions ◽  
Inlet Temperature ◽  
Term Operation ◽  
Ceramic Components

The Japanese Ceramic Gas Turbine (CGT) research and development program (FY1988–1998) as a part of the New Sunshine Project funded by the Ministry of International Trade and Industry (MITI) was completed in March 1999. Kawasaki Heavy Industries, Ltd. (KM) participated in this research program from the beginning and developed a twin-shaft CGT with a recuperator, designated as the “CGT302”. The purposes of this program were: 1) to achieve both a high efficiency and low pollutant emissions level using ceramic components, 2) to prove a multi-fuel capability to be used in co-generation systems, and 3) to demonstrate long-term operation. The targets of this program were: i) to achieve a thermal efficiency of over 42% at a turbine inlet temperature (TIT) of 1350°C, ii) to keep its emissions within the regulated value by the law, and iii) to demonstrate continuous operation for more than a thousand hours at 1200°C TIT. The CGT302 has successfully attained its targets. In March 1999 the CGT302 recorded 42.1% thermal efficiency, and 31.7 ppm NOx emissions (O2 = 16%) at 1350°C TIT. At this time it had also accumulated over two thousand hours operation at 1200°C. In this paper, we summarize the development of the CGT302.

scholarly journals Status of the Automotive Ceramic Gas Turbine Development Program — Seven Years’ Progress

1997 ◽  
Author(s):  
Norio Nakazawa ◽  
Masafumi Sasaki ◽  
Tsubura Nishiyama ◽  
Masumi Iwai ◽  
Haruo Katagiri ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Development Program ◽  
Ceramic Materials ◽  
Development Project ◽  
Component Technology ◽  
Fiscal Year ◽  
Inlet Temperature ◽  
Design Development ◽  
Durability Test ◽  
The Individual

The Petroleum Energy Center (PEC) in Japan is overseeing a seven year development program with the purpose of determining the potential of an automotive ceramic gas turbine (CGT), utilizing funding from the Ministry of International Trade and Industry. This program is scheduled to be completed in fiscal year 1996. A Regenerative-Type Single-Shaft Engine was developed, having a target turbine inlet temperature (TIT) of 1350°C and output power of 100kW. Each component has achieved or nearly met the respective design target level and the output performance tests of the engine have reached their final stage. Durability tests of some components have been completed, and others are ongoing. A 100hr durability test of the engine has also started. This development project started in FY 1990 after a two year feasibility study and preliminary design effort. After deciding on the engine specifications and completing the structural design, development and testing of individual and multiple components was carried out. Then the developmental progress of each component technology was reviewed and quantified, the results summarized, and corrective measures were applied during the latter half of the CGT development project. Anticipated difficulties, problem areas, and other obstacles which arose during the development were given extra emphasis during the individual component tests and full assembly tests. Many advanced technologies in component performance improvement, application of ceramic materials, engine structures and so forth were accumulated throughout the seven year development period.

Summary of CGT302 Ceramic Gas Turbine Research and Development Program

2002 ◽  
Vol 124 (3) ◽  
pp. 627-635 ◽  
Author(s):  
I. Takehara ◽  
T. Tatsumi ◽  
Y. Ichikawa
Keyword(s):  
Research And Development ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
High Efficiency ◽  
Development Program ◽  
Pollutant Emissions ◽  
Inlet Temperature ◽  
Term Operation ◽  
Ceramic Components

The Japanese ceramic gas turbine (CGT) research and development program (FY1988-1998) as a part of the New Sunshine Project funded by the Ministry of International Trade and Industry (MITI) was completed in March 1999. Kawasaki Heavy Industries, Ltd. (KHI) participated in this research program from the beginning and developed a twin-shaft CGT with a recuperator, designated as the “CGT302.” The purposes of this program were (1) to achieve both a high efficiency and low pollutant emissions level using ceramic components, (2) to prove a multifuel capability to be used in cogeneration systems, and (3) to demonstrate long-term operation. The targets of this program were (i) to achieve a thermal efficiency of over 42 percent at a turbine inlet temperature (TIT) of 1350°C, (ii) to keep its emissions within the regulated value by the law, and (iii) to demonstrate continuous operation for more than a thousand hours at 1200°C TIT. The CGT302 has successfully attained its targets. In March 1999 the CGT302 recorded 42.1 percent thermal efficiency, and 31.7 ppm NOx emissions (O2=16 percent) at 1350°C TIT. At this time it had also accumulated over 2000 hours operation at 1200°C. In this paper, we summarize the development of the CGT302.

Static and Dynamic Analysis of 2.5 MW Power Generation Gas Turbine Unit

2008 ◽  
Author(s):  
SooYong Kim ◽  
SeungJoo Choe ◽  
Valeri P. Kovalevskiy ◽  
Dong Hwa Kim
Keyword(s):  
Mathematical Model ◽  
Gas Turbine ◽  
Rotation Speed ◽  
Static Characteristic ◽  
Inlet Temperature ◽  
Gas Generator ◽  
Channel Calculation ◽  
Static And Dynamic Analysis ◽  
Surge Margin ◽  
Power Turbine

Development of a numerical mathematical model to calculate both the static and dynamic characteristics of a multi-shaft gas turbine consisting of a single combustion chamber with advanced cycle components such as intercooler and regenerator is presented in the paper. The numerical mathematical model is based on simplified assumptions such that quasi-static characteristic in turbo-machine and injector is used, pressure loss and heat transfer relation for static calculation neglecting fuel transport time delay can be employed. For study of static and dynamic regime, a control algorithm with following assumptions was made. When the inlet temperature of HPT exceeds the preset value, a signal to stop or open the fuel valve is issued and with a surge margin coefficient Ks<1.1, signal to open the compressor anti surge valve with proportional deflection is issued. At Ks<1.18 or as in starting, a maximum control signal will be issued. Static characteristic of the gas turbine engine in terms of rotation speed ω at ambient temperature of ta = 15°C is carried out. The rotation speed of power turbine is decreased from 20,000 to 4500 rpm, that means 4.4 times, whereas the rotation speed of gas generator is decreased only 2 ∼ 2.5 times. The air flow rate at this time decreased about 3 times. HPC had enough surge margins at all operation ranges. LPC starts to operate with the power turbine speed of 15,000 rpm (approximately 1 MW power output, that means, 40% of the nominal power) and reaches minimal permissible surge margin for safe operation bypassing the air through supercharging channel. Calculation of heat balance showed the difference did not exceed more than 0.06%, validating the accuracy of the applied method. The accuracy of each calculation is confirmed by monitoring mass and energy balance for different time steps of integration.

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

1992 ◽  
Author(s):  
Kaoru Honjo ◽  
Ryosaku Hashimoto ◽  
Hisao Ogiyama
Keyword(s):  
Fracture Toughness ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
Material Properties ◽  
Current Status ◽  
Inlet Temperature ◽  
Exhaust Gas ◽  
Basic Metal ◽  
Turbine Inlet Temperature ◽  
Test Conditions

This paper gives an overview of the current status of Japan’s national industrial ceramic gas turbine (CGT) project. The goals are 42% and higher thermal efficiency at the turbine inlet temperature (TIT) of 1350°C, and the emission from the exhaust gas should meet the regulatory values (for example, 70ppm for NOx). Also, ceramic material properties have the goals of 400 MPa for the minimum guaranteed strength at 1500°C, and 15 MPa m for the fracture toughness. Currently, the basic metal gas turbine of TIT 900°C with all metallic components has already been fabricated and is running under some test conditions. The design of the basic ceramic gas turbine of TIT 1200°C has been completed and its manufacture is in progress. Research is addressing the production of large, complicated ceramic parts, and parts which have less deformation and defects can now be produced.

VECTRA™ Power Turbine Development Program

2001 ◽  
Author(s):  
Bruce R. deBeer ◽  
David A. Nye
Keyword(s):  
Gas Turbines ◽  
High Speed ◽  
Mechanical Design ◽  
Development Program ◽  
Dynamic Strain ◽  
Load Testing ◽  
Operating Characteristics ◽  
Gas Generator ◽  
Full Load ◽  
Power Turbine

Dresser-Rand developed the VECTRA-40 power turbine specifically for the LM2500+ gas generator. This “clean sheet of paper” design uses some of the best features from both aeroderivative and heavy duty gas turbines. After the design phase was complete, an extensive development program was undertaken to confirm that both the mechanical and aerodynamic design objectives were met. Two units were built, instrumented, and tested to full load. In addition, several components were rig tested to verify stiffness, natural frequency, or operating characteristics. Finally, some events that could not be physically tested, such as blade out response, were tested virtually. During development testing, the power turbine was extensively instrumented with state-of-the-art sensors to verify the mechanical design and aerodynamic performance of the VECTRA. A PC based data acquisition system (DAQ) was constructed to simultaneously acquire and record over 1000 individual channels of data. Instrumentation was installed to record the mechanical responses and operating temperatures of all rotating components, as well as critical stationary components. Other groups of instrumentation were used to verify flowpath performance, cooling air distribution, and lubrication system operation. The physical devices connected to the DAQ system ranged from industrial transducers and signal conditioners to an innovative external telemetry system for rotating thermocouples and dynamic strain gages. The VECTRA is a high speed power turbine that was initially designed for mechanical drive applications. However recent component testing and full load testing of two units in generator drive packages have demonstrated that it is also well suited for power generation applications.

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