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1

Advanced Coating Development for Gas Turbine Components  

Science Conference Proceedings (OSTI)

Sacrificial, oxidation-resistant coatings on turbine blades in high-firing temperature gas turbines are wearing out at an unacceptably rapid rate, resulting in excessive downtime and repair costs for turbine operators. This report summarizes the results of an exploratory development project that assessed the feasibility of decelerating the degradation rate of an MCrAlY coating on several turbine blade alloys.

2000-08-01T23:59:59.000Z

2

Program to develop advanced gas turbine systems  

SciTech Connect

The need for an advanced turbine program for land-based engines has been broadly recognized in light of reductions in military funding for turbines, rapid growth in the sale of gas turbines for utility and industrial usage, and the fierce competition with off-shore manufacturers. Only with Government support can US manufacturers meet rapidly changing market conditions such as increased emissions requirements and lower capital cost requirements. In light of this, ATS planning was requested by Congress in the fiscal year (FY) 92 appropriations and is included in thee Energy Policy Act of 1992. The program budget has increased rapidly, with the FY 94 budget including. over $28 million for ATS program activities. The Natural Gas Strategic Plan and Multi-Year Program Crosscut Plan, 1993--1998, includes the ATS program as part of the overall DOE plan for natural gas-related research and development (R&D) activities. Private sector support for the program is sufficient. Three open meetings have been held during the last 2 years to provide an opportunity for industry suggestions and comments. As the result of a public review of the program plan held June 4, 1993, in Pittsburgh, 46 letters of support were received from industry, academia, and others. Gas turbines represent the fastest growing market segment in electrical and cogeneration markets, with over 60 percent of recent installations based on gas turbines. Gas turbine systems offer low installation and operating costs, low emissions (currently with add-on equipment for non-attainment areas), and quick installation (1--2 years). According to the Annual Energy Outlook 1993, electricity and natural gas demand should both grow substantially through 2010. Natural gas-fired gas turbine systems continue to be the prime candidates for much of both new and retrofit capacity in this period. Emissions requirements continue to ratchet downward with single-digit NO{sub x} ppM required in several non-attainment areas in the US

Webb, H.A. [USDOE Morgantown Energy Technology Center, WV (United States); Parks, W.P. [USDOE, Washington, DC (United States)

1994-07-01T23:59:59.000Z

3

Development of advanced gas turbine systems  

SciTech Connect

The objective of the Advanced Turbine Systems study is to investigate innovative natural gas fired cycle developments to determine the feasibility of achieving 60% efficiency within a 8-year time frame. The potential system was to be environmentally superior, cost competitive and adaptable to coal-derived fuels. Progress is described.

Bannister, R.L.; Little, D.A.; Wiant, B.C.

1993-11-01T23:59:59.000Z

4

Development of a low swirl injector concept for gas turbines  

E-Print Network (OSTI)

Injector Concept for Gas Turbines Robert K. Cheng * , Scottconcept for ultra- low NO x gas turbines. Low-swirl flamevirtually every industrial gas turbine manufacturer to meet

Cheng, R.K.; Fable, S.A.; Schmidt, D.; Arellano, L.; Smith, K.O.

2000-01-01T23:59:59.000Z

5

Gas turbine noise mitigation for a residential development  

Science Conference Proceedings (OSTI)

A residential development was proposed adjacent to a gas turbine electrical power production peaking facility. To determine compliance with local standards

2000-01-01T23:59:59.000Z

6

Advanced Gas Turbine (AGT) powertrain system development for automotive applications  

SciTech Connect

Topics covered include the AGT 101 engine test compressor design modification cold air turbine testing Mod 1 alloy turbine rotor fabrication combustion aspects regenerator development and thermal screening tests for ceramic materials. The foil gas bearings, rotor dynamics, and AGT controls and accessories are also considered.

1982-12-01T23:59:59.000Z

7

Baseline Gas Turbine Development Program. Fourteenth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a Baseline Gas Turbine Development Program sponsored by the Heat Engine Systems Branch, Division of Transportation Energy Conservation (TEC) of the Energy Research and Development Administration (ERDA). Structurally, this program is made up of three parts: (1) documentation of the existing automotive gas turbine state-of-the-art; (2) conduction of an extensive component improvement program; and (3) utilization of the improvements in the design, and building of an Upgraded Engine capable of demonstrating program goals.

Schmidt, F W; Wagner, C E

1976-04-30T23:59:59.000Z

8

GAS TURBINES  

E-Print Network (OSTI)

In the age of volatile and ever increasing natural gas fuel prices, strict new emission regulations and technological advancements, modern IGCC plants are the answer to growing market demands for efficient and environmentally friendly power generation. IGCC technology allows the use of low cost opportunity fuels, such as coal, of which there is a more than a 200-year supply in the U.S., and refinery residues, such as petroleum coke and residual oil. Future IGCC plants are expected to be more efficient and have a potential to be a lower cost solution to future CO2 and mercury regulations compared to the direct coal fired steam plants. Siemens has more than 300,000 hours of successful IGCC plant operational experience on a variety of heavy duty gas turbine models in Europe and the U.S. The gas turbines involved range from SGT5-2000E to SGT6-3000E (former designations are shown on Table 1). Future IGCC applications will extend this experience to the SGT5-4000F and SGT6-4000F/5000F/6000G gas turbines. In the currently operating Siemens ’ 60 Hz fleet, the SGT6-5000F gas turbine has the most operating engines and the most cumulative operating hours. Over the years, advancements have increased its performance and decreased its emissions and life cycle costs without impacting reliability. Development has been initiated to verify its readiness for future IGCC application including syngas combustion system testing. Similar efforts are planned for the SGT6-6000G and SGT5-4000F/SGT6-4000F models. This paper discusses the extensive development programs that have been carried out to demonstrate that target emissions and engine operability can be achieved on syngas operation in advanced F-class 50 Hz and 60 Hz gas turbine based IGCC applications.

Power For L; Satish Gadde; Jianfan Wu; Anil Gulati; Gerry Mcquiggan; Berthold Koestlin; Bernd Prade

2006-01-01T23:59:59.000Z

9

Gas Turbine Engines  

Science Conference Proceedings (OSTI)

...times higher than atmospheric pressure.Ref 25The gas turbine was developed generally for main propulsion and power

10

Development of biomass as an alternative fuel for gas turbines  

DOE Green Energy (OSTI)

A program to develop biomass as an alternative fuel for gas turbines was started at Aerospace Research Corporation in 1980. The research culminated in construction and installation of a power generation system using an Allison T-56 gas turbine at Red Boiling Springs, Tennessee. The system has been successfully operated with delivery of power to the Tennessee Valley Authority (TVA). Emissions from the system meet or exceed EPA requirements. No erosion of the turbine has been detected in over 760 hours of operation, 106 of which were on line generating power for the TVA. It was necessary to limit the turbine inlet temperature to 1450{degrees}F to control the rate of ash deposition on the turbine blades and stators and facilitate periodic cleaning of these components. Results of tests by researchers at Battelle Memorial Institute -- Columbus Division, give promise that deposits on the turbine blades, which must be periodically removed with milled walnut hulls, can be eliminated with addition of lime to the fuel. Operational problems, which are centered primarily around the feed system and engine configuration, have been adequately identified and can be corrected in an upgraded design. The system is now ready for development of a commercial version. The US Department of Energy (DOE) provided support only for the evaluation of wood as an alternative fuel for gas turbines. However, the system appears to have high potential for integration into a hybrid system for the production of ethanol from sorghum or sugar cane. 7 refs., 23 figs., 18 tabs.

Hamrick, J T [Aerospace Research Corp., Roanoke, VA (USA)

1991-04-01T23:59:59.000Z

11

Development requirements for an advanced gas turbine system  

Science Conference Proceedings (OSTI)

In cooperation with US Department of Energy`s Morgantown Energy Technology Center, a Westinghouse-led team is working on the second part of an 8-year, Advanced Turbine Systems Program to develop the technology required to provide a significant increase in natural gas-fired combined cycle power generation plant efficiency. This paper reports on the Westinghouse program to develop an innovative natural gas-fired advanced turbine cycle, which, in combination with increased firing temperature, use of advanced materials, increased component efficiencies, and reduced cooling air usage, has the potential of achieving a lower heating value plant efficiency in excess of 60%.

Bannister, R.L.; Cheruvu, N.S.; Little, D.A.; McQuiggan, G. [Westinghouse Electric Corp., Orlando, FL (United States)

1995-10-01T23:59:59.000Z

12

Development of a low swirl injector concept for gas turbines  

SciTech Connect

This paper presents a demonstration of a novel lean premixed low-swirl injector (LSI) concept for ultra-low NOx gas turbines. Low-swirl flame stabilization method is a recent discovery that is being applied to atmospheric heating equipment. Low-swirl burners are simple and support ultra-lean premixed flames that are less susceptible to combustion instabilities than conventional high-swirl designs. As a first step towards transferring this method to turbines, an injector modeled after the design of atmospheric low-swirl burner has been tested up to T=646 F and 10 atm and shows good promise for future development.

Cheng, R.K.; Fable, S.A.; Schmidt, D; Arellano, L.; Smith, K.O.

2000-09-01T23:59:59.000Z

13

Development and Implementation of Interactive/Visual Software for Simple Aircraft Gas Turbine Design  

E-Print Network (OSTI)

Development and Implementation of Interactive/Visual Software for Simple Aircraft Gas Turbine of software to analyze and design gas turbine systems has been an important part of this course since 1988 of this project was to develop MS Windows based software: Simple Aircraft Gas Turbine Design, that is easy to use

Ghajar, Afshin J.

14

The Development of ODS Superalloys for Industrial Gas Turbines  

Science Conference Proceedings (OSTI)

of advanced gas turbine engines, these alloys display long-term strength beyond the capabilities of conventional superalloys. The increasing use of ODS alloys,.

15

Development of Gatorized MERL 76 for Gas Turbine Disk Applications  

Science Conference Proceedings (OSTI)

FOR GAS TURBINE DISK APPLICATIONS. R. H. Caless and D. F. Paulonis. Materials. Engineering. Pratt & Whitney. 400 Main Street. East Hartford,. CT 06108.

16

DEVELOPMENT OF A HYDROGEN COMBUSTOR FOR A MICROFABRICATED GAS TURBINE ENGINE  

E-Print Network (OSTI)

DEVELOPMENT OF A HYDROGEN COMBUSTOR FOR A MICROFABRICATED GAS TURBINE ENGINE A. Mehra, I. A. Waitz Gas Turbine Laboratory, Department of Aeronautics and Astronautics Massachusetts Institute, a program is underway to fabricate a gas turbine engine capable of producing 50W of electrical power

Waitz, Ian A.

17

Baseline gas turbine development program. Eighteenth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program whose goals are to demonstrate an experimental upgraded gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, compact-size American automobile. Initial running of the upgraded engine took place on July 13, 1976. The engine proved to be mechanically sound, but was also 43% deficient in power. A continuing corrective development effort has to date reduced the power deficiency to 32%. Compressor efficiency was increased 2 points by changing to a 28-channel diffuser and tandem deswirl vanes; improved processing of seals has reduced regenerator leakage from about 5 to 2.5% of engine flow; a new compressor turbine nozzle has increased compressor turbine stage efficiency by about 1 point; and adjustments to burner mixing ports has reduced pressure drop from 2.8 to 2.1% of engine pressure. Key compressor turbine component improvements are scheduled for test during the next quarterly period. During the quarter, progress was also made on development of the Upgraded Vehicle control system; and instrumentation of the fourth program engine was completed by NASA. The engine will be used for development efforts at NASA LeRC.

Schmidt, F W; Wagner, C E [comps.] [comps.

1977-04-30T23:59:59.000Z

18

Baseline Gas Turbine Development Program fifth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1976 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. Baseline engines 5, 6, and 7 were built. Action to correct a 7 percent power deficiency is underway. Two baseline vehicles are operational, with the third ready for engine installation. Measurement of baseline performance and emissions is in process. NASA Lewis has their baseline engine installation operational. They are also assemblying a cold flow power turbine test rig and have made substantial progress in defining upgraded engine aerodynamics. A study was made of sizing the upgraded engine for a compact size vehicle. Chrysler's proprietary linerless insulation was installed into the endurance engine. Evaluation was delayed by a power turbine section failure. Substantial progress was made in Chrysler's proprietary low emissions burner program. Preparations are being made to evaluate the Solar burner. Evaluation of ceramic regenerator cores are in process. A seal development program was initiated. AiResearch has most of the integrated control system preprototype elements defined, and has many key elements under test. Their transient engine simulation model is nearly operational. A compressor turbine wheel disc is being designed utilizing Pratt-Whitney superplastic forging properties. Procurement of two variable inlet guide vane assemblies is about complete. Detail drawings of a Free Rotor vehicle installation are being completed.

Wagner, C.E.

1974-01-31T23:59:59.000Z

19

Baseline Gas Turbine Development Program twelfth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. The endurance engine was modified to incorporate a power turbine drive to the regenerators in order to simulate free rotor (upgraded) conditions. A portable baseline engine fixture complete with controls, intake, exhaust, and transmission is being assembled for odor evaluation. An additional 502 engine hours were accumulated on ceramic regenerators and seals. No core or seal failures were experienced during engine test. Initial fixture tests of zirconia seals show torque levels comparable with nickle oxide seals against the same matrix. An ambient compensation schedule was devised for the upgraded engine integrated control, and the integrated control system specifications were updated. A proposed hydromechanical automotive continuously variable ratio transmission (CVT) was evaluated and approved for preliminary development. Tests of heat rejection to the oil for lined versus linerless insulated engine assemblies indicated no heat loss penalty in omitting the metal liners. A study was made of various power turbine rotor assemblies and a final design was selected. Optimization studies of the two-stage power turbine reduction gears and regenerator spur and worm gears were completed. Initial tests on the fixture for simulating the scaled S-26 upgraded burner have begun.

Schmidt, F W; Wagner, C E

1975-10-31T23:59:59.000Z

20

Ceramic stationary gas turbine development program -- Fifth annual summary  

SciTech Connect

A program is being performed under the sponsorship of the US Department of Energy, Office of Industrial Technologies, to improve the performance of stationary gas turbines in cogeneration through the selective replacement of metallic hot section components with ceramic parts. The program focuses on design, fabrication, and testing of ceramic components, generating a materials properties data base, and applying life prediction and nondestructive evaluation (NDE). The development program is being performed by a team led by Solar Turbines Incorporated, and which includes suppliers of ceramic components, US research laboratories, and an industrial cogeneration end user. The Solar Centaur 50S engine was selected for the development program. The program goals included an increase in the turbine rotor inlet temperature (TRIT) from 1,010 C (1,850 F) to 1,121 C (2,050 F), accompanied by increases in thermal efficiency and output power. The performance improvements are attributable to the increase in TRIT and the reduction in cooling air requirements for the ceramic parts. The ceramic liners are also expected to lower the emissions of NOx and CO. Under the program uncooled ceramic blades and nozzles have been inserted for currently cooled metal components in the first stage of the gas producer turbine. The louvre-cooled metal combustor liners have been replaced with uncooled continuous-fiber reinforced ceramic composite (CFCC) liners. Modifications have been made to the engine hot section to accommodate the ceramic parts. To date, all first generation designs have been completed. Ceramic components have been fabricated, and are being tested in rigs and in the Centaur 50S engine. Field testing at an industrial co-generation site was started in May, 1997. This paper will provide an update of the development work and details of engine testing of ceramic components under the program.

Price, J.R.; Jimenez, O.; Faulder, L.; Edwards, B.; Parthasarathy, V.

1999-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Baseline gas turbine development program. Sixteenth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program whose goals are to demonstrate an experimental ungraded gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, compact-size American automobile. Initial running of the upgraded engine took place on July 13, 1976. The engine proved to be mechanically sound but was also seriously deficient in power. Principal program effort has therefore been in the area of diagnostic testing and corrective development. To date, three upgraded engines were assembled and two were run in the test cell. Special diagnostic instrumentation was installed on Engine 3 to evaluate the compressor, turbine, and hot engine leakage. Engine airflow, starting characteristics, oil flow/heat rejection/blowby, emissions, leakage, and component performance tests were conducted in this quarter.

Schmidt, F W; Wagner, C E

1976-10-31T23:59:59.000Z

22

Ceramic stationary gas turbine development. Final report, Phase 1  

DOE Green Energy (OSTI)

This report summarizes work performed by Solar Turbines Inc. and its subcontractors during the period September 25, 1992 through April 30, 1993. The objective of the work is to improve the performance of stationary gas turbines in cogeneration through implementation of selected ceramic components.

NONE

1994-09-01T23:59:59.000Z

23

The Design and Development of An Externally Fired Steam Injected Gas Turbine for Cogeneration  

E-Print Network (OSTI)

This paper describes the theoretical background and the design and development of a prototype externally fired steam injected (ECSI) gas turbine which has a potential to utilize lower grade fuels. The system is designed around a 2 shaft 360 HP gas turbine. Several modifications to the gas turbine (Brayton Cycle) and the effects of cycle parameters such as pressure ratio and turbine inlet temperature are discussed. Steams injected cycles are examined and the concept of the ECSI gas turbine is introduced. The discussion includes criteria for selecting a suitable heat exchanger and considerations for start-up cycles. The feasibility of the concept and discussion of problem areas in the prototype are discussed.

Boyce, M. P.; Meher-Homji, C.; Ford, D.

1981-01-01T23:59:59.000Z

24

Baseline gas turbine development program. Seventeenth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program whose goals are to demonstrate an experimental upgraded gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, compact-size American automobile. Initial running of the upgraded engine took place on July 13, 1976. The engine has proved to be mechanically sound, but has also been seriously deficient in power. Principal program effort has therefore been in the area of diagnostic testing and corrective development. To date, three upgraded engines have been assembled and run in the test cell. Engine 2 was installed in an upgraded vehicle and became operational on January 25, 1977. Special diagnostic instrumentation was installed on Engine 3 to evaluate the compressor, turbine, and hot engine leakage. It was determined that the power deficiency was principally due to problems in the compressor and first stage turbine areas and during this quarter several corrective changes have been initiated. Parts for a fourth engine being built for NASA Lewis have been shipped to NASA for installation of special instrumentation.

Schmidt, F W; Wagner, C E

1977-01-31T23:59:59.000Z

25

High temperature nuclear gas turbine  

SciTech Connect

Significance of gas turbine cycle, process of the development of gas turbines, cycle and efficiency of high-temperature gas turbines, history of gas turbine plants and application of nuclear gas turbines are described. The gas turbines are directly operated by the heat from nuclear plants. The gas turbines are classified into two types, namely open cycle and closed cycle types from the point of thermal cycle, and into two types of internal combustion and external combustion from the point of heating method. The hightemperature gas turbines are tbe type of internal combustion closed cycle. Principle of the gas turbines of closed cycle and open cycle types is based on Brayton, Sirling, and Ericsson cycles. Etficiency of the turbines is decided only by pressure ratio, and is independent of gas temperature. An example of the turbine cycle for the nuclear plant Gestacht II is explained. The thermal efficiency of that plant attains 37%. Over the gas temperature of about 750 deg C, the thermal efficiency of the gas turbine cycle is better than that of steam turbine cycle. As the nuclear fuel, coated particle fuel is used, and this can attain higher temperature of core outlet gas. Direct coupling of the nuclear power plants and the high temperature gas turbines has possibility of the higher thermal efficiency. (JA)

Kurosawa, A.

1973-01-01T23:59:59.000Z

26

Combustion System Development for Medium-Sized Industrial Gas Turbines: Meeting Tight Emission Regulations while Using  

E-Print Network (OSTI)

Combustion System Development for Medium-Sized Industrial Gas Turbines: Meeting Tight Emission and the oil & gas industries. The combustion system used in Solar's products are discussed along- bility for the introduction of new combustion systems for gas turbine products to enhance fuel

Ponce, V. Miguel

27

Combustion Turbine Combined Cycle Technology Developments, Reliability Issues, and Related Market Conditions: EPRI Gas Turbine Exper ience and Intelligence Report  

Science Conference Proceedings (OSTI)

Deregulating power generation markets worldwide present both business opportunities and challenges for combustion turbine (CT) plant owners, operators, and project developers. The "EPRI Gas Turbine Experience and Intelligence Report" (GTE&IR) provides concise, well-organized, up-to-date technical, strategic, and business information for combustion turbine (CT) power producers. This technical report assembles all of the content from the most recent three years of GTE&IR (seven editions) into a single docu...

2001-12-04T23:59:59.000Z

28

Baseline Gas Turbine Development Program ninth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. NASA completed the first phase of their baseline engine heat balance tests, and an upgraded engine compressor is being scaled for test. EPA completed their report on vehicle tests including emissions and vehicle performance, and a new endurance engine is on test. Significant development progress was made on both fixed and variable geometry combustors. After 45 hours of engine operation with Vendor A ceramic regenerator, no significant deterioration of the matrix, seals, or elastomeric mount was encountered. Ceramic regenerator stress analysis has commenced. Additional developments in non-nickel oxide regenerator rubbing seals are encouraging. The first preprototype integrated control system is in vehicle operation. Control adaptation for variable inlet guide vanes and water injection is progressing. AiRefrac turbine wheels were verified dimensionally and are being processed for engine testing. Water injection tests with a four nozzle system were run, and additional performance documentation of variable inlet guide vanes was obtained. Linerless insulation is on test in the free rotor engine, the new endurance engine, and a performance engine. The free rotor engine completed test cell checkout and was installed in a vehicle. Vehicle checkout, including a preprototype integrated control, is underway. Detailed specifications of the upgraded engine were written.

Schmidt, C.E.

1975-01-31T23:59:59.000Z

29

Gas turbine diagnostic system  

E-Print Network (OSTI)

In the given article the methods of parametric diagnostics of gas turbine based on fuzzy logic is proposed. The diagnostic map of interconnection between some parts of turbine and changes of corresponding parameters has been developed. Also we have created model to define the efficiency of the compressor using fuzzy logic algorithms.

Talgat, Shuvatov

2011-01-01T23:59:59.000Z

30

Chemically recuperated gas turbine  

SciTech Connect

This patent describes a powerplant. It comprises: a gas turbine engine having a compressor, a combustor downstream of the compressor, a turbine, and a power turbine downstream and adjacent the turbine there being no reheating means between the turbine and power turbine; a reformer positioned downstream of the power turbine such that the output of the power turbine provides a first means for heating the reformer; a second means for heating the reformer, the second means positioned downstream of the power turbine.

Horner, M.W.; Hines, W.R.

1992-07-28T23:59:59.000Z

31

Baseline Gas Turbine Development Program. Tenth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. A fuel control system is being developed to allow program evaluation of a very promising low emissions, single stage, fixed geometry proprietary burner. Ceramic regenerators are under test in the free-rotor vehicle, and some have completed 30 hours of performance evaluation. Three-dimensional ceramic regenerator transient thermal and structural analysis programs are operational. Initial friction and wear test fixture results show that zirconium oxide fully stabilized by yttrium oxide is an effective substitute for nickel oxide in a plasma sprayed seal. A preprototype control system was adapted for variable inlet guide vane control in a vehicle installation. An evaluation of the free-rotor accessory drive concept in a vehicle showed no serious mechanical integrity problems. Simplifications are being made to the water injection system; significant metallurgical analysis of observed erosion/corrosion problems was accomplished. Variable inlet guide vane aerodynamic loss characteristics were determined. Generally satisfactory results with linerless insulation are resulting in extended use and application. Pattern work for the upgraded engine housing and the power turbine wheel castings are in process. A computer design analysis of the regenerator drive gears was made, and an analysis was completed of a three peripheral roller regenerator support and drive proposal for the upgraded engine.

Schmidt, F.W.; Wagner, C.E.

1975-04-30T23:59:59.000Z

32

Ceramic Stationary Gas Turbine Development. Technical progress report, April 1, 1993--October 31, 1994  

DOE Green Energy (OSTI)

This report summarizes work performed by Solar Technologies Inc. and its subcontractors, during the period April 1, 1993 through October 31, 1994 under Phase II of the DOE Ceramic Stationary Gas Turbine Development program. The objective of the program is to improve the performance of stationary gas turbines in cogeneration through the implementation of selected ceramic components.

NONE

1994-12-01T23:59:59.000Z

33

Baseline Gas Turbine Development Program second quaterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1976 Federal Emissions standards and which is competitive in fuel economy, performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. Procurement delays have caused engine deliveries to slip one to two months. Assembly of Engine 3 with special instrumentation for NASA and Engine 4 to be used in the first vehicle has commenced. Resolution of some intake design details will complete the vehicle installation design. Other vehicle component and modification efforts are on schedule. Support activity has included: (1) studies and proposals for improving engine fuel economy; (2) ceramic recuperator calculations; (3) cooperation with NASA's program by giving a design review, providing engine drawings, planning and fabricating instrumentation for their engine, and advising them on matters relating to their engine test facilities; (4) refinement of a combustor test procedure; and (5) two ''sixth generation'' vehicle demonstrations. Engine endurance activity has started with the evaluation of a proprietary molded insulation. Limited progress was made in the experimental determination of variable geometry combustor control parameters. Ceramic regenerator specifications were prepared. A sub-contractor for an integrated control system was selected pending approval by the EPA Contract Officer. Design studies in support of the ''Gatorized'' turbine wheel contract are underway. Initial development tests on a rotary nozzle actuator are showing good progress towards achieving fast response times. A limited amount of development of the fuel control still remains before acceleration tests with and without a Free Rotor can be run.

Wagner, C.E.

1973-04-30T23:59:59.000Z

34

Baseline Gas Turbine Development Program. Eleventh quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. NASA completed initial heat balance testing of a baseline engine. An additional 450 hours were run on ceramic regenerators and seals. Seal wear rates are very good, and the elastomeric mounting system was satisfactory. An engine/control oil supply system based on the power steering pump is successfully operating in baseline vehicles. The design of the upgraded engine power turbine nozzle actuator was finalized, and layouts of the inlet guide vane actuator are in process. A lock-up torque converter was installed in the free rotor vehicle. Baseline engine and vehicle testing of water injection and variable inlet guide vanes was completed. A thermal analysis of the gas generator is in process. A steady-state, full power analysis was made. A three-dimensional stress analysis of the compressor cover was made. The power turbine nozzle actuating system layout was completed. The analytical studies of the power turbine rotor bearings were completed. MTI completed the design of the gas generator rotor simulation fixture and is starting to build it. Optimized reduction gears were successfully tested in a baseline engine.

Schmidt, F.W.; Wagner, C.E.

1975-07-31T23:59:59.000Z

35

Baseline Gas Turbine Development Program eighth quarterly progress report  

DOE Green Energy (OSTI)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, standard size American automobile. Major preparations for engine heat balance tests by NASA were completed. EPA laboratories completed Baseline vehicle emissions, noise, and odor tests. Assembly of the program endurance engine is nearing completion. Test cell evaluation of the government furnished combustor (Solar) verified steady state emissions to be extremely low. Initial engine tests of Vendor A ceramic regenerator cores with an elastomeric drive verified performance predictions. Efforts towards developing a non-nickel oxide regenerator seal show extreme sensitivity to porosity differences between cores of different suppliers. All three preprototype integrated control systems were built. Modifications are being worked out to achieve a stable low speed operation. Two prototype compressor turbine wheels made from the reuseable pattern process are being inspected and processed for testing. The engine housing modified for operation at higher cycle temperatures and pressures was received. The baseline engine converted to free rotor is completing test cell check out. The modified vehicle is ready for engine installation. The upgraded engine characterization was updated to include the latest information on V.I.G.V., rotors, and bearings. The upgraded engine housing is being modeled physically and analytically for design and stress studies. An accessory drive system for the upgraded engine was selected, and a final layout is in process.

Schmidt, C.E.

1974-10-31T23:59:59.000Z

36

Gas Turbine Manufacturers Perspective  

NLE Websites -- All DOE Office Websites (Extended Search)

Viability and Experience of IGCC From a Viability and Experience of IGCC From a Gas Turbine Manufacturers Perspective ASME - IGCC ASME - IGCC Turbo Turbo Expo Expo June 2001 June 2001 GE Power Systems g Klaus Brun, Ph.D. - Manager Process Power Plant Product & Market Development Robert M. Jones - Project Development Manager Process Power Plants Power Systems Power Systems General Electric Company General Electric Company ABSTRACT GE Power Systems g Economic Viability and Experience of IGCC From a Gas Turbine Manufacturers Perspective High natural gas fuel gas prices combined with new technology developments have made IGCC a competitive option when compared to conventional combined cycle or coal steam turbine cycles. Although the initial investment costs for an IGCC plant are still comparatively high, the low

37

The Virtual Gas Turbine System for Alloy Assesment  

Science Conference Proceedings (OSTI)

Key words: Virtual turbine, Alloy design program, Gas turbine design program, Nickel-base ... developed a virtual gas turbine (VT) system as a combination of.

38

Improving steam turbine-gas turbine plants  

SciTech Connect

Leningrad Polytechnic Institute investigated the main characteristics of combined plants according to their structure, determined by very important parameters. The following parameters were selected: utilization factor (ratio of heat added to the steam-water working medium from the heat of the exhaust gases to the entire amount of heat added to the steam-water working medium) and fuel consumption factor (ratio of heat from fuel added to the steam-water working medium to the entire consumption of heat in the combined plant). It is concluded that steam turbine-gas turbine plants working at comparatively low gas temperatures (about 800/sup 0/C) must be constructed as plants of maximum capacity, i.e., with large steam flows. Gas turbine-steam turbine plants with high-temperature gas turbines operating at a high utilization factor (approaching binary plants) ensure a qualitative rise in efficiency and have high flexibility characteristics. They are the most promising power plants. A long-term plan for development of combined plants on the basis of standard steam turbine and gas turbine equipment, the production of which is planned in the USSR and in Comecon countries, is required. This plan must be closely connected with solution of the problem of using coals for gas turbine plants.

Kirillov, I.I.; Arsen' ev, L.V.; Khodak, E.A.; Romakhova, G.A.

1979-01-01T23:59:59.000Z

39

The Development of Direct Age 718 for Gas Turbine Engine Disk ...  

Science Conference Proceedings (OSTI)

as a commercial gas turbine aircraft engine disk material are described. Initial ... Engines (GEAE) in the production of gas turbine engine components (1).

40

Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine  

E-Print Network (OSTI)

As part of the MIT micro-gas turbine engine project, the development of a hydrocarbon-fueled catalytic micro-combustion system is presented. A conventionally-machined catalytic flow reactor was built to simulate the ...

Peck, Jhongwoo, 1976-

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Gas Turbine Emissions  

E-Print Network (OSTI)

Historically, preliminary design information regarding gas turbine emissions has been unreliable, particularly for facilities using steam injection and other forms of Best Available Control Technology (BACT). This was probably attributed to the lack of regulatory interest in the 'real world' test results coupled with the difficulties of gathering analogous bench test data for systems employing gas turbines with Heat Recovery Steam Generators (HRSG) and steam injection. It appears that the agencies are getting a better grasp of emissions, but there are still problem areas, particularly CO and unburned hydrocarbon emissions. The lag in data has resulted in the imposition of a CO reactor as BACT for the gas turbine. With the renewed concern about the environment, air permits will have a high profile with offsets being the next fix beyond BACT. 'The manner in which technology developers and electric utilities will share emissions reductions in the coming era of pollution allowance trading is becoming prominent on the agendas of strategic planners at technology vendors and the electric power industry....' (1) Therefore, it becomes increasingly important that the proponents of gas turbine-based facilities establish more reliable data on their proposed emissions. This paper addresses the gas turbine emissions experiences of eight cogeneration plants utilizing: 1) steam injection for both NOx control and power augmentation, 2) CO reactors, 3) selective catalytic reduction units. It also looks at possible regulatory actions.

Frederick, J. D.

1990-06-01T23:59:59.000Z

42

THE DEVELOPMENT AND APPLICATION OF GAS TURBINES IN SOUTH AFRICA WITH SPECIAL REFERENCE TO COAL AND NUCLEAR FUELS  

SciTech Connect

Aspects of gas turbine development with emphasis on applications in South Africa are discussed. A review of developmental work in various parts of the world on coal burning turbines is presented and local efforts on conventional combustion chambers and resonant combustion systems are outlined. The possible applications of gas turbines to nuclear reactors in South Africa are also examined. (J.R.D.)

Grant, W.L.; Roux, A.J.A.

1959-07-01T23:59:59.000Z

43

The Robust Gas Turbine Project M.I.T. Gas Turbine Laboratory  

E-Print Network (OSTI)

1 The Robust Gas Turbine Project M.I.T. Gas Turbine Laboratory Prof. David Darmofal, Prof. Daniel and in-service conditions is a key factor in gas turbine product quality. While a given design may these improved engines. The M.I.T. Gas Turbine Laboratory (GTL) has a long history of developing advanced

Waitz, Ian A.

44

Development and demonstration of a wood-fired gas turbine system  

DOE Green Energy (OSTI)

The objectives of the test program were to obtain some preliminary information regarding the nature of particulate and vapor phase alkali compounds produced and to assess any deleterious impact they might have on materials of construction. Power Generating Incorporated (PGI) is developing a wood-fired gas turbine system for specialized cogeneration applications. The system is based on a patented pressurized combustor designed and tested by PGI in conjunction with McConnell Industries. The other components of the system are fuel receiving, preparation, storage and feeding system, gas clean-up equipment, and a gas turbine generator.

Smith, V.; Selzer, B.; Sethi, V.

1993-08-01T23:59:59.000Z

45

Gas turbine engines  

SciTech Connect

A core engine or gas generator is described for use in a range of gas turbine engines. A multi-stage compressor and a single stage supersonic turbine are mounted on a single shaft. The compressor includes a number of stages of variable angle and the gas generator has an annular combustion chamber.

MacDonald, A.G.

1976-05-18T23:59:59.000Z

46

Gas Turbine Optimum Operation.  

E-Print Network (OSTI)

??Many offshore installations are dependent on power generated by gas turbines and a critical issue is that these experience performance deterioration over time. Performance deterioration… (more)

Flesland, Synnřve Mangerud

2010-01-01T23:59:59.000Z

47

Satoshi Hada Department of Gas Turbine Engineering,  

E-Print Network (OSTI)

Satoshi Hada Department of Gas Turbine Engineering, Mitsubishi Heavy Industries, Ltd., Takasago must be prevented by developing envi- ronmentally friendly power plants. Industrial gas turbines play a major role in power generation with modern high temperature gas turbines being applied in the gas

Thole, Karen A.

48

Gas turbines face new challenges  

SciTech Connect

Gas turbines continue to increase the electric power generation market in both the peaking and the intermediate load categories. With the increase in unit size and operating efficiencies. capital costs per kilowatt are reduced. Clean fuels---gas, light oil, or alcohol-type fuel--are needed for the gas turbines. The most efficient method of power generation is now attained from gas turbines, but the shortage of clean fuels looms. Manufacturers are anticipating the availability of clean fuels and continue working on the development of high- pressure, high-temperature turbines. In the near-term, increased efficiency is sought by making use of the turbine exhaust heat. involving combined or regenerative cycles. (MCW)

Papamarcos, J.

1973-12-01T23:59:59.000Z

49

Cooperative Research and Development for Advanced Materials in Advanced Industrial Gas Turbines Final Technical Report  

SciTech Connect

Evaluation of the performance of innovative thermal barrier coating systems for applications at high temperatures in advanced industrical gas turbines.

Ramesh Subramanian

2006-04-19T23:59:59.000Z

50

Gas turbines for the future  

SciTech Connect

Utility gas turbine technology has been advancing fairly rapidly, one reason being that it shares in the benefits of the research and development for aviation gas turbines. In general, turbine progress is characterized by large, incremental advances in performance. At intervals of approx. 15 yr, new-generation turbines are introduced, refined, and eventually installed in relatively large numbers. A new generation of turbines is being readied for the market that will have power ratings into the 130- to 150-MW range (simple cycle), significantly higher than the 70 to 100 MW now in service. When the new turbines are installed in combined-cycle plants, the efficiency levels are expected to rise from the present value of approx. 42% higher heating value to approx. 46%.

Cohn, A.

1987-01-01T23:59:59.000Z

51

Charts estimate gas-turbine site performance  

SciTech Connect

Nomographs have been developed to simplify site performance estimates for various types of gas turbine engines used for industrial applications. The nomographs can provide valuable data for engineers to use for an initial appraisal of projects where gas turbines are to be considered. General guidelines for the selection of gas turbines are also discussed. In particular, site conditions that influence the performance of gas turbines are described.

Dharmadhikari, S.

1988-05-09T23:59:59.000Z

52

Technology Adoption and Regulatory Regimes: Gas Turbines Electricity Generators from 1980 to 2001  

E-Print Network (OSTI)

Scheibel (1997) “Current Gas Turbine Developments and Futurefor Heavy-Duty Gas Turbines,” October 2000. Available onlineNext Evolution of the F Gas Turbine,” April 2001. Available

Ishii, Jun

2004-01-01T23:59:59.000Z

53

Condition based management of gas turbine engine using neural networks.  

E-Print Network (OSTI)

??This research work is focused on the development of the hybrid neural network model to asses the gas turbine’s compressor health. Effects of various gas… (more)

Muthukumar, Krishnan.

2008-01-01T23:59:59.000Z

54

Advanced Materials and Processes for Gas Turbines TABLE OF ...  

Science Conference Proceedings (OSTI)

Materials Issues for the Design of Industrial Gas Turbines [pp. 3-13] ... French Developments of Superalloys for Gas Turbine Disks and Blades [pp. 17-28

55

H gas turbine combined cycle  

SciTech Connect

A major step has been taken in the development of the Next Power Generation System--``H`` Technology Combined Cycle. This new gas turbine combined-cycle system increases thermal performance to the 60% level by increasing gas turbine operating temperature to 1,430 C (2,600 F) at a pressure ratio of 23 to 1. Although this represents a significant increase in operating temperature for the gas turbine, the potential for single digit NOx levels (based upon 15% O{sub 2}, in the exhaust) has been retained. The combined effect of performance increase and environmental control is achieved by an innovative closed loop steam cooling system which tightly integrates the gas turbine and steam turbine cycles. The ``H`` Gas Turbine Combined Cycle System meets the goals and objectives of the DOE Advanced Turbine System Program. The development and demonstration of this new system is being carried out as part of the Industrial/Government cooperative agreement under the ATS Program. This program will achieve first commercial operation of this new system before the end of the century.

Corman, J.

1995-12-31T23:59:59.000Z

56

Gas turbine plant emissions  

SciTech Connect

Many cogeneration facilities use gas turbines combined with heat recovery boilers, and the number is increasing. At the start of 1986, over 75% of filings for new cogeneration plants included plans to burn natural gas. Depending on the geographic region, gas turbines are still one of the most popular prime movers. Emissions of pollutants from these turbines pose potential risks to the environment, particularly in geographical areas that already have high concentrations of cogeneration facilities. Although environmental regulations have concentrated on nitrogen oxides (NO/sub x/) in the past, it is now necessary to evaluate emission controls for other pollutants as well.

Davidson, L.N.; Gullett, D.E.

1987-03-01T23:59:59.000Z

57

Development and demonstration of a solid fuel-fired gas turbine system  

SciTech Connect

Western Research Institute (WRI) and Power Generating Incorporated (PGI) are developing a solid fuel-fired gas turbine system for specialized cogeneration applications. The system is based on a patented pressurized combustor designed and tested by PGI in conjunction with McConnell Industries. The other components of the system are (a) fuel receiving, preparation, storage and feeding system, (b) gas clean-up equipment, and (c) a gas turbine generator. An approximately 400 kW prototype system is under construction at the WRI facilities in Laramie, Wyoming. As a part of this demonstration the integrated system, following a short shakedown period, will be operated on white wood. White wood was selected as the fuel for early tests because of its low ash (0.5 - 1.0 %), silica, and sulfur contents. The system will then be operated on coal. It is expected that the design of the coal-based system will evolve as the wood testing proceeds. In previous similar wood-fired system development attempts, albeit at lower turbine inlet temperatures, a major technical hindrance to long-term operation of a gas turbine power system has been the degradation of the hot section of the gas turbine. Deposition, erosion, and corrosion are main issues that need to be addressed. In the wood-fired PGI system, erosion is not likely to be of concern because of the low silica and low overall ash content of the fuel and the fact that the wood ash particle size is expected to be in the range where little or no erosion would be expected. However, because of the high alkali content of the fuel, deposition and corrosion can become major issues. This paper will deal with the issues pertaining to the design of the prototype being constructed at the WRI premises. Preliminary thoughts on the design aspects of the plant modifications required for coal testing will also be presented.

Speight, J.G.; Sethi, V.K.

1995-11-01T23:59:59.000Z

58

High-temperature turbine technology program hot-gas path development test. Part II. Testing  

SciTech Connect

This topical report of the US Department of Energy High-Temperature Turbine Technology (DOE-HTTT) Phase II program presents the results of testing full-scale water-cooled first-stage and second-stage turbine nozzles at design temperature and pressure to verify that the designs are adequate for operation in a full-scale turbine environment. Low-cycle fatigue life of the nozzles was demonstrated by subjecting cascade assemblies to several hundred simulated startup/shutdown turbine cycles. This testing was accomplished in the Hot-Gas Path Development Test Stand (HGPDTS), which is capable of evaluating full-scale combustion and turbine nozzle components. A three-throat cascade of the first-stage turbine nozzle was successfully tested at a nozzle inlet gas temperature of 2630/sup 0/F and a nozzle inlet pressure of 11.3 atmospheres. In addition to steady-state operation at the design firing temperature, the nozzle cascade was exposed to a simulated startup/shutdown turbine cycle by varying the firing temperature. A total of 42 h at the design point and 617 thermal cycles were accumulated during the test periods. First-stage nozzle test results show that measured metal and coolant temperatures correspond well to the predicted design values. This nozzle design has been shown to be fully satisfactory for the application (2600/sup 0/F), with growth capability to 3000/sup 0/F firing temperature. A post-test metallurgical examination of sectioned portions of the tested nozzles shows a totally bonded structure, confirming the test results and attesting to the successful performance of water-cooled composite nozzle hardware.

Horner, M.W.

1982-03-01T23:59:59.000Z

59

Gas turbine noise control  

Science Conference Proceedings (OSTI)

The use of gas turbine powered generators and pumping stations are likely to increase over the next two decades. Alternative fuel systems utilizing fluidized coal beds are likely in the near future

Louis A. Challis and Associates Pty. Ltd.

1979-01-01T23:59:59.000Z

60

Development of the Low Swirl Injector for Fuel-Flexible GasTurbines  

DOE Green Energy (OSTI)

Industrial gas turbines are primarily fueled with natural gas. However, changes in fuel cost and availability, and a desire to control carbon dioxide emissions, are creating pressure to utilize other fuels. There is an increased interest in the use of fuels from coal gasification, such as syngas and hydrogen, and renewable fuels, such as biogas and biodiesel. Current turbine fuel injectors have had years of development to optimize their performance with natural gas. The new fuels appearing on the horizon can have combustion properties that differ substantially from natural gas. Factors such as turbulent flame speed, heat content, autoignition characteristics, and range of flammability must be considered when evaluating injector performance. The low swirl injector utilizes a unique flame stabilization mechanism and is under development for gas turbine applications. Its design and mode of operation allow it to operate effectively over a wide range of conditions. Studies conducted at LBNL indicate that the LSI can operate on fuels with a wide range of flame speeds, including hydrogen. It can also utilize low heat content fuels, such as biogas and syngas. We will discuss the low swirl injector operating parameters, and how the LSC performs with various alternative fuels.

Littlejohn, D.; Cheng, R.K.; Nazeer,W.A.; Smith, K.O

2007-02-14T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Gas turbine combustor transition  

DOE Patents (OSTI)

A method is described for converting a steam cooled transition to an air cooled transition in a gas turbine having a compressor in fluid communication with a combustor, a turbine section in fluid communication with the combustor, the transition disposed in a combustor shell and having a cooling circuit connecting a steam outlet and a steam inlet and wherein hot gas flows from the combustor through the transition and to the turbine section, includes forming an air outlet in the transition in fluid communication with the cooling circuit and providing for an air inlet in the transition in fluid communication with the cooling circuit. 7 figs.

Coslow, B.J.; Whidden, G.L.

1999-05-25T23:59:59.000Z

62

Gas turbine combustor transition  

DOE Patents (OSTI)

A method of converting a steam cooled transition to an air cooled transition in a gas turbine having a compressor in fluid communication with a combustor, a turbine section in fluid communication with the combustor, the transition disposed in a combustor shell and having a cooling circuit connecting a steam outlet and a steam inlet and wherein hot gas flows from the combustor through the transition and to the turbine section, includes forming an air outlet in the transition in fluid communication with the cooling circuit and providing for an air inlet in the transition in fluid communication with the cooling circuit.

Coslow, Billy Joe (Winter Park, FL); Whidden, Graydon Lane (Great Blue, CT)

1999-01-01T23:59:59.000Z

63

DEVELOPMENT AND DEMONSTRATION OF AN ULTRA LOW NOx COMBUSTOR FOR GAS TURBINES  

SciTech Connect

Alzeta Corporation has developed surface-stabilized fuel injectors for use with lean premixed combustors which provide extended turndown and ultra-low NOX emission performance. These injectors use a patented technique to form interacting radiant and blue-flame zones immediately above a selectively-perforated porous metal surface. This allows stable operation at low reaction temperatures. This technology is being commercialized under the product name nanoSTAR. Initial tests demonstrated low NOX emissions but, were limited by flashback failure of the injectors. The weld seams required to form cylindrical injectors from flat sheet material were identified as the cause of the failures. The approach for this project was to first develop new fabrication methods to produce injectors without weld seams, verify similar emissions performance to the original flat sheet material and then develop products for microturbines and small gas turbines along parallel development paths. A 37 month project was completed to develop and test a surface stabilized combustion system for gas turbine applications. New fabrication techniques developed removed a technological barrier to the success of the product by elimination of conductive weld seams from the injector surface. The injectors demonstrated ultra low emissions in rig tests conducted under gas turbine operating conditions. The ability for injectors to share a common combustion chamber allowing for deployment in annular combustion liner was also demonstrated. Some further development is required to resolve integration issues related to specific engine constraints, but the nanoSTAR technology has clearly demonstrated its low emissions potential. The overall project conclusions can be summarized: (1) A wet-laid casting method successfully eliminated weld seams from the injector surface without degrading performance. (2) Gas turbine cycle analysis identified several injector designs and control schemes to start and load engines using nanoSTAR technology. A mechanically simple single zone injector can be used in Solar Turbine's Taurus 60 engine. (3) Rig testing of single monolithic injectors demonstrated sub 3 ppmv NOX and sub 10 ppmv CO and UHC emissions (all corrected to 15% O2) at Taurus 60 full-load pressure and combustion air inlet temperature. (4) Testing of two nanoSTAR injectors in Solar Turbine's sector rig demonstrated the ability for injectors to survive when fired in close proximity at Taurus 60 full load pressure and combustion air inlet temperature. (5) Sector rig tests demonstrated emissions performance and range of operability consistent with single injector rig tests. Alzeta has committed to the commercialization of nanoSTAR injectors and has sufficient production capability to conclude development and meet initial demand.

NEIL K. MCDOUGALD

2005-04-30T23:59:59.000Z

64

DEVELOPMENT AND DEMONSTRATION OF AN ULTRA LOW NOx COMBUSTOR FOR GAS TURBINES  

SciTech Connect

Alzeta Corporation has developed surface-stabilized fuel injectors for use with lean premixed combustors which provide extended turndown and ultra-low NOX emission performance. These injectors use a patented technique to form interacting radiant and blue-flame zones immediately above a selectively-perforated porous metal surface. This allows stable operation at low reaction temperatures. This technology is being commercialized under the product name nanoSTAR. Initial tests demonstrated low NOX emissions but, were limited by flashback failure of the injectors. The weld seams required to form cylindrical injectors from flat sheet material were identified as the cause of the failures. The approach for this project was to first develop new fabrication methods to produce injectors without weld seams, verify similar emissions performance to the original flat sheet material and then develop products for microturbines and small gas turbines along parallel development paths. A 37 month project was completed to develop and test a surface stabilized combustion system for gas turbine applications. New fabrication techniques developed removed a technological barrier to the success of the product by elimination of conductive weld seams from the injector surface. The injectors demonstrated ultra low emissions in rig tests conducted under gas turbine operating conditions. The ability for injectors to share a common combustion chamber allowing for deployment in annular combustion liner was also demonstrated. Some further development is required to resolve integration issues related to specific engine constraints, but the nanoSTAR technology has clearly demonstrated its low emissions potential. The overall project conclusions can be summarized: (1) A wet-laid casting method successfully eliminated weld seams from the injector surface without degrading performance. (2) Gas turbine cycle analysis identified several injector designs and control schemes to start and load engines using nanoSTAR technology. A mechanically simple single zone injector can be used in Solar Turbine's Taurus 60 engine. (3) Rig testing of single monolithic injectors demonstrated sub 3 ppmv NOX and sub 10 ppmv CO and UHC emissions (all corrected to 15% O2) at Taurus 60 full-load pressure and combustion air inlet temperature. (4) Testing of two nanoSTAR injectors in Solar Turbine's sector rig demonstrated the ability for injectors to survive when fired in close proximity at Taurus 60 full load pressure and combustion air inlet temperature. (5) Sector rig tests demonstrated emissions performance and range of operability consistent with single injector rig tests. Alzeta has committed to the commercialization of nanoSTAR injectors and has sufficient production capability to conclude development and meet initial demand.

NEIL K. MCDOUGALD

2005-04-30T23:59:59.000Z

65

Development and demonstration of a wood-fired gas turbine system  

DOE Green Energy (OSTI)

Power Generating Inc. (PGI) has developed and patented a unique direct-fired gas turbine power system (PGI Power System) that operates on solid wood-based fuels. The PGI Power System is designed to generate from 500 kilowatts to 3.5 megawatts of electrical power and up to 30 million Btu per hour of thermal energy for various industrial and utility applications. The system is expected to operate at thermal efficiency levels greater than 70% through full utilization of both the electrical and thermal energy it generates at a specific host facility. PGI and WRI built a 450-kW prototype system at the Western Research Institute (WRI) facilities in Laramie, Wyoming, to demonstrate the technical and economic viability of the PGI Power System. The plant has undergone a brief shakedown, and is presently being operated on white wood. In previous attempts to develop similar systems, the major technical hindrance to long-term operation of a gas turbine power system has been degradation of the hot section in the gas turbine. This problem is overcome in the PGI Power System through its unique design, by closely controlling fuel specifications, and by developing specialized operating procedures. In wood-fired testing conducted to date, no degradation in the engine performance is obvious.

Sethi, V.

1997-10-01T23:59:59.000Z

66

Development and testing of low-Btu fuel gas turbine combustors  

SciTech Connect

The integrated gasification combined cycle (IGCC) concept represents a highly efficient and environmentally compatible advanced coal fueled power generation technology. When IGCC is coupled with high temperature desulfurization, or hot gas cleanup (HGCU), the efficiency and cost advantage of IGCC is further improved with respect to systems based on conventional low temperature gas cleanup. Commercialization of the IGCC/HGCU concept requires successful development of combustion systems for high temperature low Btu fuel in gas turbines. Toward this goal, a turbine combustion system simulator has been designed, constructed, and fired with high temperature low Btu fuel. Fuel is supplied by a pilot scale fixed bed gasifier and hot gas desulfurization system. The primary objectives of this project are: (1) demonstration of long term operability of the turbine simulator with high temperature low Btu fuel; (2) characterization of particulates and other contaminants in the fuel as well as deposits in the fuel nozzle, combustor, and first stage nozzle; and (3) measurement of NO{sub x}, CO, unburned hydrocarbons, trace element, and particulate emissions.

Bevan, S.; Abuaf, N.; Feitelberg, A.S.; Hung, S.L.; Samuels, M.S.; Tolpadi, A.K.

1994-10-01T23:59:59.000Z

67

CFD Modelling of Generic Gas Turbine Combustor.  

E-Print Network (OSTI)

??New computational methods are continuously developed in order to solve problems in different engineering fields. One of these fields is gas turbines, where the challenge… (more)

KHODABANDEH, AMIR

2011-01-01T23:59:59.000Z

68

Development of Ni Base Superalloy for Industrial Gas Turbine  

Science Conference Proceedings (OSTI)

In response to this demand, Ni-base superalloys have been developed by MHI's alloy design system. These Ni-base superalloys have been applied to rotating ...

69

Baseline Gas Turbine Development Program. Twentieth quarterly progress report, October 31, 1977  

DOE Green Energy (OSTI)

Progress is reported for a program whose goals are to demonstrate an experimental Upgraded gas turbine powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine powered, compact-size American automobile. Activity during this twentieth program quarter has continued to emphasize development towards correcting power deficiency in the Upgraded Engine. Though no absolute improvements have been realized in this quarter, ssignificant progress has been made in identifying causes, appropriately adjusting original design constraints, and proceeding with corrective designs. Specifically, to reduce endwall and secondary flow losses, a new low velocity compressor turbine inlet duct, and blading both with an increased height and lighter loading is being designed. A large increase in the power turbine annulus is being used to significantly lower blade Mach number and leaving loss. Progress is also being made in uniforming regenerator flow for better heat recovery, and in the development of control system components. A Public Interest Car has been built and has proved effective in communicating overall program benefits and goals. In the area of advanced engine development, work is now underway towards processing sintered alpha silicon carbide into high temperature turbine stage components.

Schmidt, F W; Wagner, C E [comps.] [comps.

1977-10-31T23:59:59.000Z

70

Gas turbine sealing apparatus  

DOE Patents (OSTI)

A gas turbine includes forward and aft rows of rotatable blades, a row of stationary vanes between the forward and aft rows of rotatable blades, an annular intermediate disc, and a seal housing apparatus. The forward and aft rows of rotatable blades are coupled to respective first and second portions of a disc/rotor assembly. The annular intermediate disc is coupled to the disc/rotor assembly so as to be rotatable with the disc/rotor assembly during operation of the gas turbine. The annular intermediate disc includes a forward side coupled to the first portion of the disc/rotor assembly and an aft side coupled to the second portion of the disc/rotor assembly. The seal housing apparatus is coupled to the annular intermediate disc so as to be rotatable with the annular intermediate disc and the disc/rotor assembly during operation of the gas turbine.

Wiebe, David J; Wessell, Brian J; Ebert, Todd; Beeck, Alexander; Liang, George; Marussich, Walter H

2013-02-19T23:59:59.000Z

71

Ceramic stationary gas turbine  

DOE Green Energy (OSTI)

The performance of current industrial gas turbines is limited by the temperature and strength capabilities of the metallic structural materials in the engine hot section. Because of their superior high-temperature strength and durability, ceramics can be used as structural materials for hot section components (blades, nozzles, combustor liners) in innovative designs at increased turbine firing temperatures. The benefits include the ability to increase the turbine inlet temperature (TIT) to about 1200{degrees}C ({approx}2200{degrees}F) or more with uncooled ceramics. It has been projected that fully optimized stationary gas turbines would have a {approx}20 percent gain in thermal efficiency and {approx}40 percent gain in output power in simple cycle compared to all metal-engines with air-cooled components. Annual fuel savings in cogeneration in the U.S. would be on the order of 0.2 Quad by 2010. Emissions reductions to under 10 ppmv NO{sub x} are also forecast. This paper describes the progress on a three-phase, 6-year program sponsored by the U.S. Department of Energy, Office of Industrial Technologies, to achieve significant performance improvements and emissions reductions in stationary gas turbines by replacing metallic hot section components with ceramic parts. Progress is being reported for the period September 1, 1994, through September 30, 1995.

Roode, M. van

1995-12-31T23:59:59.000Z

72

Development of a coal-fired gas turbine cogeneration system: Status report  

SciTech Connect

The Allison Advanced Coal-Fueled Turbine Program is now in the sixth year of a development effort that has led to a POC engine demonstration test on a Coal-Water-Slurry (CWS) fuel. Earlier forecasts by CWS suppliers that suitable CWS fuels would be commercially available at an economic price have not been realized. A program replan has, therefore, been executed that incorporates the use of readily available dry pulverized coal. To support this program, technology issues relating to combustor performance and emission control, hot gas cleanup, and turbine deposition, erosion and corrosion (DEC) have been addressed. In addition, system assessment studies have been performed to evaluate the commercial prospects for small (<8 MWe) coal-fired industrial cogeneration systems and the application of the rich-quench-lean (RQL) coal-combustion technology to larger (> 100 MWe) utility-sized gas turbines. These results are reported by Wenglarz (1992). Combustor and engine tests on dry coal are now planned in preparation for a commercial demonstration that will follow the completion of this program.

Wilkes, C.; Wenglarz, R.A.; Hart, P.J.; Thomas, W.H.; Rothrock, J.W.; Harris, C.N.; Bourke, R.C.

1992-01-01T23:59:59.000Z

73

Development and assessment of a soot emissions model for aircraft gas turbine engines  

E-Print Network (OSTI)

Assessing candidate policies designed to address the impact of aviation on the environment requires a simplified method to estimate pollutant emissions for current and future aircraft gas turbine engines under different ...

Martini, Bastien

2008-01-01T23:59:59.000Z

74

Proceedings: 1991 EPRI Gas Turbine Procurement Seminar  

Science Conference Proceedings (OSTI)

EPRI's 1991 workshop on gas turbine procurement will help equipment specifiers to develop more-effective procurement procedures for new gas turbine generating units.Properly drafted specifications and an informed purchase posture improve the quality of a procurement and can result in lower unit life-cycle cost.

1992-05-01T23:59:59.000Z

75

Gas Turbine Repair Guidelines: Alstom GT26  

Science Conference Proceedings (OSTI)

For more than a decade, the Electric Power Research Institute (EPRI) has been developing gas turbine hot section component repair and coating guidelines to assist utilities and power generators in the refurbishment of these critical and expensive parts. Utilities, generators, and repair vendors have used these guidelines to perform repairs on turbine blades, vanes, and combustion hardware. The guidelines in this volume address the specific features of the Alstom GT26 gas turbine.

2011-11-03T23:59:59.000Z

76

Gas turbine sealing apparatus  

SciTech Connect

A sealing apparatus in a gas turbine. The sealing apparatus includes a seal housing apparatus coupled to a disc/rotor assembly so as to be rotatable therewith during operation of the gas turbine. The seal housing apparatus comprises a base member, a first leg portion, a second leg portion, and spanning structure. The base member extends generally axially between forward and aft rows of rotatable blades and is positioned adjacent to a row of stationary vanes. The first leg portion extends radially inwardly from the base member and is coupled to the disc/rotor assembly. The second leg portion is axially spaced from the first leg portion, extends radially inwardly from the base member, and is coupled to the disc/rotor assembly. The spanning structure extends between and is rigidly coupled to each of the base member, the first leg portion, and the second leg portion.

Marra, John Joseph; Wessell, Brian J.; Liang, George

2013-03-05T23:59:59.000Z

77

Gas turbine premixing systems  

SciTech Connect

Methods and systems are provided for premixing combustion fuel and air within gas turbines. In one embodiment, a combustor includes an upstream mixing panel configured to direct compressed air and combustion fuel through premixing zone to form a fuel-air mixture. The combustor includes a downstream mixing panel configured to mix additional combustion fuel with the fule-air mixture to form a combustion mixture.

Kraemer, Gilbert Otto; Varatharajan, Balachandar; Evulet, Andrei Tristan; Yilmaz, Ertan; Lacy, Benjamin Paul

2013-12-31T23:59:59.000Z

78

Gas turbine cooling system  

SciTech Connect

A gas turbine engine (10) having a closed-loop cooling circuit (39) for transferring heat from the hot turbine section (16) to the compressed air (24) produced by the compressor section (12). The closed-loop cooling system (39) includes a heat exchanger (40) disposed in the flow path of the compressed air (24) between the outlet of the compressor section (12) and the inlet of the combustor (14). A cooling fluid (50) may be driven by a pump (52) located outside of the engine casing (53) or a pump (54) mounted on the rotor shaft (17). The cooling circuit (39) may include an orifice (60) for causing the cooling fluid (50) to change from a liquid state to a gaseous state, thereby increasing the heat transfer capacity of the cooling circuit (39).

Bancalari, Eduardo E. (Orlando, FL)

2001-01-01T23:59:59.000Z

79

Gas generator and turbine unit  

SciTech Connect

A gas turbine power unit is disclosed in which the arrangement and configuration of parts is such as to save space and weight in order to provide a compact and self-contained assembly. An air-intake casing supports the upstream end of a gas generator, the down-stream end of which is integral with a power turbine. The stator casing of the turbine is connected to a cone thermally insulated and completely inserted into any exhaust casing having a vertical outlet, wherein the turbine exhaust is conveyed into the exhaust casing by an annular diffusing cone. The turbine casing is supported on four legs. In addition, the turbine rotor and thus the turbine shaft are overhangingly supported by an independent structure, the weight of which bears on the machine base outside the exhaust casing and away of the power turbine space.

Vinciguerra, C.

1984-12-11T23:59:59.000Z

80

Advanced Hydrogen Turbine Development  

DOE Green Energy (OSTI)

Siemens has developed a roadmap to achieve the DOE goals for efficiency, cost reduction, and emissions through innovative approaches and novel technologies which build upon worldwide IGCC operational experience, platform technology, and extensive experience in G-class operating conditions. In Phase 1, the technologies and concepts necessary to achieve the program goals were identified for the gas turbine components and supporting technology areas and testing plans were developed to mitigate identified risks. Multiple studies were conducted to evaluate the impact in plant performance of different gas turbine and plant technologies. 2015 gas turbine technologies showed a significant improvement in IGCC plant efficiency, however, a severe performance penalty was calculated for high carbon capture cases. Thermodynamic calculations showed that the DOE 2010 and 2015 efficiency targets can be met with a two step approach. A risk management process was instituted in Phase 1 to identify risk and develop mitigation plans. For the risks identified, testing and development programs are in place and the risks will be revisited periodically to determine if changes to the plan are necessary. A compressor performance prediction has shown that the design of the compressor for the engine can be achieved with additional stages added to the rear of the compressor. Tip clearance effects were studied as well as a range of flow and pressure ratios to evaluate the impacts to both performance and stability. Considerable data was obtained on the four candidate combustion systems: diffusion, catalytic, premix, and distributed combustion. Based on the results of Phase 1, the premixed combustion system and the distributed combustion system were chosen as having the most potential and will be the focus of Phase 2 of the program. Significant progress was also made in obtaining combustion kinetics data for high hydrogen fuels. The Phase 1 turbine studies indicate initial feasibility of the advanced hydrogen turbine that meets the aggressive targets set forth for the advanced hydrogen turbine, including increased rotor inlet temperature (RIT), lower total cooling and leakage air (TCLA) flow, higher pressure ratio, and higher mass flow through the turbine compared to the baseline. Maintaining efficiency with high mass flow Syngas combustion is achieved using a large high AN2 blade 4, which has been identified as a significant advancement beyond the current state-of-the-art. Preliminary results showed feasibility of a rotor system capable of increased power output and operating conditions above the baseline. In addition, several concepts were developed for casing components to address higher operating conditions. Rare earth modified bond coat for the purpose of reducing oxidation and TBC spallation demonstrated an increase in TBC spallation life of almost 40%. The results from Phase 1 identified two TBC compositions which satisfy the thermal conductivity requirements and have demonstrated phase stability up to temperatures of 1850 C. The potential to join alloys using a bonding process has been demonstrated and initial HVOF spray deposition trials were promising. The qualitative ranking of alloys and coatings in environmental conditions was also performed using isothermal tests where significant variations in alloy degradation were observed as a function of gas composition. Initial basic system configuration schematics and working system descriptions have been produced to define key boundary data and support estimation of costs. Review of existing materials in use for hydrogen transportation show benefits or tradeoffs for materials that could be used in this type of applications. Hydrogen safety will become a larger risk than when using natural gas fuel as the work done to date in other areas has shown direct implications for this type of use. Studies were conducted which showed reduced CO{sub 2} and NOx emissions with increased plant efficiency. An approach to maximize plant output is needed in order to address the DOE turbine goal for 20-30% reduction o

Joesph Fadok

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

OVERLAY COATINGS FOR GAS TURBINE AIRFOILS  

E-Print Network (OSTI)

of Supperalloys for Gas Turbine Engines, 11 J. Metals, Q,OVERLAY COATINGS FOR GAS TURBINE AIRFOILS Donald H. Boone1970, p. 545. R. Krutenat, Gas Turbine Materials Conference

Boone, Donald H.

2013-01-01T23:59:59.000Z

82

Combustion modeling in advanced gas turbine systems  

DOE Green Energy (OSTI)

Goal of DOE`s Advanced Turbine Systems program is to develop and commercialize ultra-high efficiency, environmentally superior, cost competitive gas turbine systems for base-load applications in utility, independent power producer, and industrial markets. Primary objective of the program here is to develop a comprehensive combustion model for advanced gas turbine combustion systems using natural gas (coal gasification or biomass fuels). The efforts included code evaluation (PCGC-3), coherent anti-Stokes Raman spectroscopy, laser Doppler anemometry, and laser-induced fluorescence.

Smoot, L.D.; Hedman, P.O.; Fletcher, T.H.; Brewster, B.S.; Kramer, S.K. [Brigham Young Univ., Provo, UT (United States). Advanced Combustion Engineering Research Center

1995-12-31T23:59:59.000Z

83

Advanced coal-fueled industrial cogeneration gas turbine system particle removal system development  

SciTech Connect

Solar Turbines developed a direct coal-fueled turbine system (DCFT) and tested each component in subscale facilities and the combustion system was tested at full-scale. The combustion system was comprised of a two-stage slagging combustor with an impact separator between the two combustors. Greater than 90 percent of the native ash in the coal was removed as liquid slag with this system. In the first combustor, coal water slurry mixture (CWM) was injected into a combustion chamber which was operated loan to suppress NO{sub x} formation. The slurry was introduced through four fuel injectors that created a toroidal vortex because of the combustor geometry and angle of orientation of the injectors. The liquid slag that was formed was directed downward toward an impaction plate made of a refractory material. Sixty to seventy percent of the coal-borne ash was collected in this fashion. An impact separator was used to remove additional slag that had escaped the primary combustor. The combined particulate collection efficiency from both combustors was above 95 percent. Unfortunately, a great deal of the original sulfur from the coal still remained in the gas stream and needed to be separated. To accomplish this, dolomite or hydrated lime were injected in the secondary combustor to react with the sulfur dioxide and form calcium sulfite and sulfates. This solution for the sulfur problem increased the dust concentrations to as much as 6000 ppmw. A downstream particulate control system was required, and one that could operate at 150 psia, 1850-1900{degrees}F and with low pressure drop. Solar designed and tested a particulate rejection system to remove essentially all particulate from the high temperature, high pressure gas stream. A thorough research and development program was aimed at identifying candidate technologies and testing them with Solar`s coal-fired system. This topical report summarizes these activities over a period beginning in 1987 and ending in 1992.

Stephenson, M.

1994-03-01T23:59:59.000Z

84

Gas Turbine Procurement: 1988 Workshop  

Science Conference Proceedings (OSTI)

Specifying the levels of reliability and availability needed for new gas turbines or combined-cycle plants can help utilities meet plant operating requirements. Equipment specifiers can use information presented in this workshop to help them formulate more effective specifications for new gas turbine generating equipment.

1989-04-06T23:59:59.000Z

85

Advanced coal-fueled gas turbine systems  

SciTech Connect

Several technology advances since the early coal-fueled turbine programs that address technical issues of coal as a turbine fuel have been developed in the early 1980s: Coal-water suspensions as fuel form, improved methods for removing ash and contaminants from coal, staged combustion for reducing NO{sub x} emissions from fuel-bound nitrogen, and greater understanding of deposition/erosion/corrosion and their control. Several Advanced Coal-Fueled Gas Turbine Systems programs were awarded to gas turbine manufacturers for for components development and proof of concept tests; one of these was Allison. Tests were conducted in a subscale coal combustion facility and a full-scale facility operating a coal combustor sized to the Allison Model 501-K industrial turbine. A rich-quench-lean (RQL), low nitrogen oxide combustor design incorporating hot gas cleanup was developed for coal fuels; this should also be applicable to biomass, etc. The combustor tests showed NO{sub x} and CO emissions {le} levels for turbines operating with natural gas. Water washing of vanes from the turbine removed the deposits. Systems and economic evaluations identified two possible applications for RQL turbines: Cogeneration plants based on Allison 501-K turbine (output 3.7 MW(e), 23,000 lbs/hr steam) and combined cycle power plants based on 50 MW or larger gas turbines. Coal-fueled cogeneration plant configurations were defined and evaluated for site specific factors. A coal-fueled turbine combined cycle plant design was identified which is simple, compact, and results in lower capital cost, with comparable efficiency and low emissions relative to other coal technologies (gasification, advanced PFBC).

Wenglarz, R.A.

1994-08-01T23:59:59.000Z

86

Development of standardized air-blown coal gasifier/gas turbine concepts for future electric power systems  

SciTech Connect

CRS Sirrine (CRSS) is evaluating a novel IGCC process in which gases exiting the gasifier are burned in a gas turbine combustion system. The turbine exhaust gas is used to generate additional power in a conventional steam generator. This results in a significant increase in efficiency. However, the IGCC process requires development of novel approaches to control SO{sub 2} and NO{sub x} emissions and alkali vapors which can damage downstream turbine components. Ammonia is produced from the reaction of coal-bound nitrogen with steam in the reducing zone of any fixed bed coal gasifier. This ammonia can be partially oxidized to NO{sub x} when the product gas is oxidized in a gas turbine combustor. Alkali metals vaporize in the high-temperature combustion zone of the gasifier and laser condense on the surface of small char or ash particles or on cooled metal surfaces. It these alkali-coated materials reach the gas turbine combustor, the alkali will revaporize condense on turbine blades and cause rapid high temperature corrosion. Efficiency reduction will result. PSI Technology Company (PSIT) was contracted by CRSS to evaluate and recommend solutions for NO{sub x} emissions and for alkali metals deposition. Various methods for NO{sub x} emission control and the potential process and economic impacts were evaluated. This included estimates of process performance, heat and mass balances around the combustion and heat transfer units and a preliminary economic evaluation. The potential for alkali metal vaporization and condensation at various points in the system was also estimated. Several control processes and evaluated, including an order of magnitude cost for the control process.

1990-07-01T23:59:59.000Z

87

Construction of a Simulator for the Siemens Gas Turbine SGT-600.  

E-Print Network (OSTI)

?? This thesis covers the development of a simulator for the Siemens Gas Tur-bine SGT-600. An explanation on how a gas turbine works is also… (more)

Nordström, Lisa

2005-01-01T23:59:59.000Z

88

NEXT GENERATION GAS TURBINE SYSTEMS STUDY  

SciTech Connect

Under sponsorship of the U.S. Department of Energy's National Energy Technology Laboratory, Siemens Westinghouse Power Corporation has conducted a study of Next Generation Gas Turbine Systems that embraces the goals of the DOE's High Efficiency Engines and Turbines and Vision 21 programs. The Siemens Westinghouse Next Generation Gas Turbine (NGGT) Systems program was a 24-month study looking at the feasibility of a NGGT for the emerging deregulated distributed generation market. Initial efforts focused on a modular gas turbine using an innovative blend of proven technologies from the Siemens Westinghouse W501 series of gas turbines and new enabling technologies to serve a wide variety of applications. The flexibility to serve both 50-Hz and 60-Hz applications, use a wide range of fuels and be configured for peaking, intermediate and base load duty cycles was the ultimate goal. As the study progressed the emphasis shifted from a flexible gas turbine system of a specific size to a broader gas turbine technology focus. This shift in direction allowed for greater placement of technology among both the existing fleet and new engine designs, regardless of size, and will ultimately provide for greater public benefit. This report describes the study efforts and provides the resultant conclusions and recommendations for future technology development in collaboration with the DOE.

Benjamin C. Wiant; Ihor S. Diakunchak; Dennis A. Horazak; Harry T. Morehead

2003-03-01T23:59:59.000Z

89

NEXT GENERATION GAS TURBINE SYSTEMS STUDY  

DOE Green Energy (OSTI)

Under sponsorship of the U.S. Department of Energy's National Energy Technology Laboratory, Siemens Westinghouse Power Corporation has conducted a study of Next Generation Gas Turbine Systems that embraces the goals of the DOE's High Efficiency Engines and Turbines and Vision 21 programs. The Siemens Westinghouse Next Generation Gas Turbine (NGGT) Systems program was a 24-month study looking at the feasibility of a NGGT for the emerging deregulated distributed generation market. Initial efforts focused on a modular gas turbine using an innovative blend of proven technologies from the Siemens Westinghouse W501 series of gas turbines and new enabling technologies to serve a wide variety of applications. The flexibility to serve both 50-Hz and 60-Hz applications, use a wide range of fuels and be configured for peaking, intermediate and base load duty cycles was the ultimate goal. As the study progressed the emphasis shifted from a flexible gas turbine system of a specific size to a broader gas turbine technology focus. This shift in direction allowed for greater placement of technology among both the existing fleet and new engine designs, regardless of size, and will ultimately provide for greater public benefit. This report describes the study efforts and provides the resultant conclusions and recommendations for future technology development in collaboration with the DOE.

Benjamin C. Wiant; Ihor S. Diakunchak; Dennis A. Horazak; Harry T. Morehead

2003-03-01T23:59:59.000Z

90

Baseline gas turbine development program. First quarterly progress report, January 31, 1973  

DOE Green Energy (OSTI)

Progress is reported for a program to demonstrate by 1976 an experimental gas turbine-powered automobile which meets the 1976 Federal Emission Standards and which is competitive in fuel economy, performance, reliability, and potential manufacturing cost with the conventional piston engine-powered, standard size American automobile. Procurement and assembly of parts for seven engines plus spares is basically on schedule, although some areas are requiring intensive follow-up. A partial engine (including regenerators) was assembled for shipment to Solar. It will be incorporated into their combustor test rig, where it will provide both pre-heat and a proper physical environment for their combustor evaluation and development. Of the two test cells being refurbished for use on this program, one was completed and the other is underway. Two engines loaned to start the program were checked out, qualified, and delivered. Vehicle installation design is nearly complete. The cars were ordered. Vehicle engineering to provide hydraulic power boost braking, heating and air conditioning, and transmission is underway. Procurement arrangements for basic body and chassis changes were completed. In support to the Government, an engine characterization was prepared and assistance given in developing a combustor test procedure. Work was initiated on developing a control system for a variable geometry combustor. A request for proposal for an upgraded engine control system was prepared and issued. Preparations are being made for a free rotor concept evaluation. A plan of performance was prepared and submitted. Included were program plan charts and estimated cumulative manpower graphs.

Not Available

1973-01-01T23:59:59.000Z

91

Stream-injected free-turbine-type gas turbine  

SciTech Connect

This patent describes an improvement in a free turbine type gas turbine. The turbine comprises: compressor means; a core turbine mechanically coupled with the compressor means to power it; a power turbine which is independent from the core turbine; and a combustion chamber for providing a heated working fluid; means for adding steam to the working fluid; means for providing a single flow path for the working fluid, first through the core turbine and then through the power turbine. The improvement comprises: means for preventing mismatch between the core turbine and the compressor due to the addition of steam comprising coupling a variable output load to the compressor.

Cheng, D.Y.

1990-02-13T23:59:59.000Z

92

Steam assisted gas turbine engine  

SciTech Connect

A gas turbine engine is disclosed which has an integral steam power system consisting of heat absorbing boilers which convert an unpressurized liquid into an expanded and heated steam by utilizing heat normally lost through component cooling systems and the exhaust system. Upon completion of the steam power cycle, the steam is condensed back to a liquid state through a condensing system located within the compressor and other functional components of the gas turbine engine. A system of high pressure air and friction seals restrict steam or liquid condensate within designed flow bounds. The gas turbine engine disclosed is designed to give improved fuel efficiency and economy for aircraft and land use applications.

Coronel, P.D.

1982-06-08T23:59:59.000Z

93

Gas turbine engine braking and method  

SciTech Connect

A method is described of decelerating a ground vehicle driven by a gas turbine engine having a gas generator section and a free turbine output power section driven by a gas flow from the gas generator section, comprising the steps of: altering the incidence of gas flow from the gas generator section onto the free turbine section whereby said gas flow opposes rotation of the free turbine section; increasing gas generator section speed; and subsequent to said altering and increasing steps, selectively mechanically interconnecting said gas generator and free turbine sections whereby the rotational inertia of the gas generator section tends to decelerate the free turbine section.

Mattson, G.; Woodhouse, G.

1980-07-01T23:59:59.000Z

94

Aircraft Gas Turbine Blade and Vane Repair  

Science Conference Proceedings (OSTI)

Gas turbine blades experience dimensional .... platinum applied in separate gas phase or electroplating ..... surfaces are natural consequences of fluoride.

95

Development and Validation of Catalytic Combustion for Gas Turbines, Final Report  

Science Conference Proceedings (OSTI)

Combustion turbines (CTs) have become the preferred customer choice for new power generation capacity. However, some challenges have arisen. While exhaust emissions from natural gas-fueled and distillate-fueled CTs are lower than most other power generation options, continued environmental pressure has led to permitted emission limits below what is commonly achievable -- even with advanced dry low-NOx (DLN) combustors. An advanced combustion approach, catalytic combustion, offers the potential to achieve...

2000-12-05T23:59:59.000Z

96

Unusual plant features gas turbines  

SciTech Connect

Gas turbines were chosen by Phillips Petroleum Co. to operate the first gas-injection plant in the world to use gas-type turbines to drive reciprocating compressors. The plant is located in Lake Maracaibo, Venezuela. Gas turbines were chosen because of their inherent reliability as prime movers and for their lack of vibration. Reciprocating compressors were decided upon because of their great flexibility. Now, for the first time, the advantages of both gas turbines and reciprocating compressors are coupled on a very large scale. In this installation, the turbines will operate at about 5,000 rpm, while the compressors will run at only 270 rpm. Speed will be reduced through the giant gear boxes. The compressor platform rests on seventy- eight 36-in. piles in 100 ft of water. Piles were driven 180 ft below water level. To dehydrate the gas, Phillips will install a triethylene glycol unit. Two nearby flow stations will gather associated gas produced at the field and will pipe the gas underwater to the gas injection platform. Lamar Field is in the S. central area of Lake Maracaibo. To date, it has produced a 150 million bbl in 10 yr. Studies have indicated that a combination of waterflooding and repressuring by gas injection could double final recovery. Waterflooding began in 1963.

Franco, A.

1967-08-01T23:59:59.000Z

97

Combined gas turbine and steam turbine power plant  

SciTech Connect

A description is given of a power plant arrangement having a gas turbine, a heat recovery steam generator, a steam turbine and means for controlling steam flow from the heat recovery steam generator to the steam turbine. Steam conditions are maintained generally constant and variations in power plant loading are carried by the steam turbine while operating the gas turbine at a generally constant fuel flow.

Baker, J.M.; Clark, G.W.; Harper, D.M.; Tomlinson, L.O.

1978-04-04T23:59:59.000Z

98

SumTime-Turbine: A Knowledge-Based System to Communicate Gas Turbine Time-Series Data  

E-Print Network (OSTI)

SumTime-Turbine: A Knowledge-Based System to Communicate Gas Turbine Time-Series Data Jin Yu produces textual summaries of archived time- series data from gas turbines. These summaries should help evaluated. 1 Introduction In order to get the most out of gas turbines, TIGER [2] has been developed

Reiter, Ehud

99

Industrial Gas Turbines | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Industrial Gas Turbines Industrial Gas Turbines Industrial Gas Turbines November 1, 2013 - 11:40am Addthis A gas turbine is a heat engine that uses high-temperature, high-pressure gas as the working fluid. Part of the heat supplied by the gas is converted directly into mechanical work. High-temperature, high-pressure gas rushes out of the combustor and pushes against the turbine blades, causing them to rotate. In most cases, hot gas is produced by burning a fuel in air. This is why gas turbines are often referred to as "combustion" turbines. Because gas turbines are compact, lightweight, quick-starting, and simple to operate, they are used widely in industry, universities and colleges, hospitals, and commercial buildings. Simple-cycle gas turbines convert a portion of input energy from the fuel

100

Industrial Gas Turbines | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Industrial Gas Turbines Industrial Gas Turbines Industrial Gas Turbines November 1, 2013 - 11:40am Addthis A gas turbine is a heat engine that uses high-temperature, high-pressure gas as the working fluid. Part of the heat supplied by the gas is converted directly into mechanical work. High-temperature, high-pressure gas rushes out of the combustor and pushes against the turbine blades, causing them to rotate. In most cases, hot gas is produced by burning a fuel in air. This is why gas turbines are often referred to as "combustion" turbines. Because gas turbines are compact, lightweight, quick-starting, and simple to operate, they are used widely in industry, universities and colleges, hospitals, and commercial buildings. Simple-cycle gas turbines convert a portion of input energy from the fuel

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

GE Upgrades Top Selling Advanced Gas Turbine  

Science Conference Proceedings (OSTI)

Oct 30, 2009 ... According to GE, a typical power plant operating two new 7FA gas turbines with a single steam turbine in combined cycle configuration would ...

102

Study and program plan for improved heavy duty gas turbine engine ceramic component development  

DOE Green Energy (OSTI)

A five-year program plan was generated from the study activities with the objectives of demonstrating a fuel economy of 213 mg/W . h (0.35 lb/hp-hr) brake specific fuel consumption by 1981 through use of ceramic materials, with conformance to current and projected Federal noise and emission standards, and to demonstrate a commercially viable engine. Study results show that increased turbine inlet and regenerator inlet temperatures, through the use of ceramic materials, contribute the greatest amount to achieving fuel economy goals. Further, improved component efficiencies (for the compressor, gasifier turbine, power turbine, and regenerator disks show significant additional gains in fuel economy. Fuel saved in a 500,000-mile engine life, risk levels involved in development, and engine-related life cycle costs for fleets (100 units) of trucks and buses were used as criteria to select work goals for the planned program.

Helms, H.E.

1977-05-01T23:59:59.000Z

103

AIAA 20033698 Aircraft Gas Turbine Engine  

E-Print Network (OSTI)

AIAA 2003­3698 Aircraft Gas Turbine Engine Simulations W. C. Reynolds , J. J. Alonso, and M. Fatica, Reston, VA 20191­4344 #12;AIAA 2003­3698 Aircraft Gas Turbine Engine Simulations W. C. Reynolds , J. J of the flowpath through complete aircraft gas turbines including the compressor, combustor, turbine, and secondary

Stanford University

104

Gas Turbine Repair Guidelines: GE 9FA  

Science Conference Proceedings (OSTI)

For more than a decade, the Electric Power Research Institute (EPRI) has been developing gas turbine hot section component repair and coating guidelines to assist utilities in the refurbishment of these critical and expensive parts. Utilities, generators, and repair vendors have used these guidelines to perform repairs on blades, turbine vanes, and combustion hardware. Guidelines now exist for a variety of conventional and advanced General Electric, Siemens/Westinghouse, Alstom, and Mitsubishi heavy ...

2012-12-12T23:59:59.000Z

105

Gas Turbine Hot Section Component Life Tracking  

Science Conference Proceedings (OSTI)

Damage tracking software—backed by comprehensive analysis techniques—provides a means for owners/operators to independently track and predict life consumption for critical gas turbine hot section components. Results can be compared with equipment supplier formulated intervals. This report updates the development status of damage tracking software for managing life-cycle costs by improving owner/operator understanding of component life and life consumption as a function of turbine ...

2012-12-03T23:59:59.000Z

106

Gas Turbine Repair Guidelines: GE 7FA  

Science Conference Proceedings (OSTI)

For more than a decade, the Electric Power Research Institute (EPRI) has been developing gas turbine hot section component repair and coating guidelines to assist utilities in the refurbishment of these critical and expensive parts. Utilities, generators, and repair vendors have used these guidelines to perform repairs on blades, turbine vanes, and combustion hardware. Guidelines now exist for a variety of conventional and advanced General Electric, Siemens/Westinghouse, Alstom, and Mitsubishi heavy fram...

2011-12-27T23:59:59.000Z

107

Gas turbine engine control using electrically driven fuel metering pumps.  

E-Print Network (OSTI)

??The aim of this thesis, developed in ROLLS ROYCE PLC, has been to investigate the use of an innovative fuel system on aero gas turbine… (more)

BERTOLUCCI, ALESSIO

2008-01-01T23:59:59.000Z

108

Gas Turbines for Advanced Pressurized Fluidized Bed Combustion...  

NLE Websites -- All DOE Office Websites (Extended Search)

APFBC uses a circulating pressurized fluidized bed combustor (PFBC) with a fluid bed heat exchanger to develop hot vitiated air for the gas turbine' s topping combustor and...

109

Combined gas turbine and steam turbine power station  

SciTech Connect

In order to operate a gas turbine and steam turbine plant with a high temperature at the inlet to the gas turbine plant, the parts located in the hot-gas stream of the gas turbine being steam-cooled, and the cooling steam, thereby raised to a higher temperature, being fed to the steam turbine for further expansion, it is proposed that the waste heat from the gas turbine be led through a two-pressure waste heat boiler, and that the steam, generated in this boiler, be slightly superheated in a cooling-steam superheater, and fed to the hollow inlet vanes and to the rotor blades, which are likewise hollow, the steam, strongly superheated during this cooling process, then being admixed to the steam coming from the intermediate superheater, and being fed to the low-pressure section of the steam turbine.

Mukherjee, D.

1984-01-10T23:59:59.000Z

110

Gas Turbine World performance specs 1984  

SciTech Connect

The following topics are discussed: working insights into the performance specifications; performance and design characteristics of electric power plants, mechanical drive gas turbines, and marine propulsion gas turbines; and performance calculations.

1984-03-01T23:59:59.000Z

111

Advanced Coal-Fueled Gas Turbine Program  

SciTech Connect

The objective of the original Request for Proposal was to establish the technological bases necessary for the subsequent commercial development and deployment of advanced coal-fueled gas turbine power systems by the private sector. The offeror was to identify the specific application or applications, toward which his development efforts would be directed; define and substantiate the technical, economic, and environmental criteria for the selected application; and conduct such component design, development, integration, and tests as deemed necessary to fulfill this objective. Specifically, the offeror was to choose a system through which ingenious methods of grouping subcomponents into integrated systems accomplishes the following: (1) Preserve the inherent power density and performance advantages of gas turbine systems. (2) System must be capable of meeting or exceeding existing and expected environmental regulations for the proposed application. (3) System must offer a considerable improvement over coal-fueled systems which are commercial, have been demonstrated, or are being demonstrated. (4) System proposed must be an integrated gas turbine concept, i.e., all fuel conditioning, all expansion gas conditioning, or post-expansion gas cleaning, must be integrated into the gas turbine system.

Horner, M.W.; Ekstedt, E.E.; Gal, E.; Jackson, M.R.; Kimura, S.G.; Lavigne, R.G.; Lucas, C.; Rairden, J.R.; Sabla, P.E.; Savelli, J.F.; Slaughter, D.M.; Spiro, C.L.; Staub, F.W.

1989-02-01T23:59:59.000Z

112

Environmental Coatings For Gas Turbine Engine Applications  

Science Conference Proceedings (OSTI)

Presentation Title, Environmental Coatings For Gas Turbine Engine Applications. Author(s), Ming Fu, Roger Wustman, Jeffrey Williams, Douglas Konitzer.

113

Advanced turbine systems program conceptual design and product development task 5 -- market study of the gas fired ATS. Topical report  

DOE Green Energy (OSTI)

Solar Turbines Incorporated (Solar), in partnership with the Department of Energy, will develop a family of advanced gas turbine-based power systems (ATS) for widespread commercialization within the domestic and international industrial marketplace, and to the rapidly changing electric power generation industry. The objective of the jointly-funded Program is to introduce an ATS with high efficiency, and markedly reduced emissions levels, in high numbers as rapidly as possible following introduction. This Topical Report is submitted in response to the requirements outlined in Task 5 of the Department of Energy METC Contract on Advanced Combustion Systems, Contract No, DE AC21-93MC30246 (Contract), for a Market Study of the Gas Fired Advanced Turbine System. It presents a market study for the ATS proposed by Solar, and will examine both the economic and siting constraints of the ATS compared with competing systems in the various candidate markets. Also contained within this report is an examination and analysis of Solar`s ATS and its ability to compete in future utility and industrial markets, as well as factors affecting the marketability of the ATS.

NONE

1995-05-01T23:59:59.000Z

114

Gas Turbine Procurement: 1987 Workshop  

Science Conference Proceedings (OSTI)

By properly specifying a gas turbine unit, a utility buyer can avoid engine system configurations that could contribute to forced outages, long downtimes, and less than satisfactory starting reliability. A 1987 EPRI workshop identified factors that can assist utilities in specifying these systems to obtain high reliability, availability, and maintainability.

1988-03-23T23:59:59.000Z

115

ADVANCED GAS TURBINE SYSTEMS RESEARCH  

SciTech Connect

The activities of the Advanced Gas Turbine Systems Research (AGTSR) program for this reporting period are described in this quarterly report. The report is divided into discussions of Membership, Administration, Technology Transfer (Workshop/Education), Research and Miscellaneous Related Activity. Items worthy of note are presented in extended bullet format following the appropriate heading.

Unknown

2002-02-01T23:59:59.000Z

116

ADVANCED GAS TURBINE SYSTEMS RESEARCH  

SciTech Connect

The activities of the Advanced Gas Turbine Systems Research (AGRSR) program are described in the quarterly report. The report is divided into discussions of Membership, Administration, Technology Transfer (Workshop/Education) and Research. Items worthy of note are presented in extended bullet format following the appropriate heading.

Unknown

2000-01-01T23:59:59.000Z

117

Gas turbine intake air quality  

SciTech Connect

This report presents the results of preliminary research intended to evaluate the causes and effects of compressor fouling on pipeline gas turbines. A literature search and field-experience survey of pipeline operators provides the basis for the conclusions and recommendations.

Lawson, C.C.

1988-01-01T23:59:59.000Z

118

ADVANCED GAS TURBINE SYSTEMS RESEARCH  

SciTech Connect

The activities of the Advanced Gas Turbine Systems Research (AGTSR) program for this reporting period are described in this quarterly report. The report is divided into discussions of Membership, Administration, Technology Transfer (Workshop/Education), Research and Miscellaneous Related Activity. Items worthy of note are presented in extended bullet format following the appropriate heading.

Unknown

2002-04-01T23:59:59.000Z

119

Enhancing gas-turbine performance  

SciTech Connect

According to one report, around 80% of the large frame-size industrial and utility gas turbines (GTs) in service throughout the world were installed between 1965 and 1975. Because of substantial technology advancements since their commissioning, these older units make ideal candidates for capacity enhancements through such options as steam or water injection, inlet-air cooling, steam-cycle addition, hot-gas-path component uprates, and in the case of combined-cycles, supplementary firing of the heat-recovery steam generator (HRSG). This article reports that many gas-turbine owners are searching for upgrades that will enhance capacity or thermal efficiency--or both. Uprating hot-gas-path components is perhaps the most popular option, but economic evaluations must account for shortened hot-section life and higher O and M costs.

Swanekamp, R.

1995-09-01T23:59:59.000Z

120

Electronic fuel control system for gas turbine  

SciTech Connect

A method is described for monitoring gas turbine operating temperatures and rotational velocity for producing one of a group of fuel control signals for controlling the fuel input rate to the gas turbine. The method consists of: monitoring turbine inlet temperatures through respective sensors for the gas turbine, averaging the turbine inlet temperatures to produce an average turbine inlet temperature signal, monitoring a gas generator inlet temperature sensor of the gas turbine for producing a gas generator inlet temperature signal, generating a speed signal proportional to the rotational velocity of the gas turbine, combining the gas generator inlet temperature signal with the speed signal to produce a first function signal, applying the first function signal to a stored data set to produce a second function signal, the stored data set related to performance characteristics of the gas turbine, and comparing the turbine inlet temperature signal to the second function signal to produce a difference signal therefrom, the difference signal serving as a fuel control signal for the gas turbine.

Nick, C.F.

1986-04-22T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Performance optimization of gas turbine engine  

Science Conference Proceedings (OSTI)

Performance optimization of a gas turbine engine can be expressed in terms of minimizing fuel consumption while maintaining nominal thrust output, maximizing thrust for the same fuel consumption and minimizing turbine blade temperature. Additional control ... Keywords: Fuel control, Gas turbines, Genetic algorithms, Optimization, Temperature control

Valceres V. R. Silva; Wael Khatib; Peter J. Fleming

2005-08-01T23:59:59.000Z

122

alloy 718 forging development for large land-based gas turbines  

Science Conference Proceedings (OSTI)

equipment over the past decade have led to the need for larger and more efficient ... efficiency requirements have in turn led to higher turbine temperatures,  ...

123

Outline of plan for advanced reheat gas turbine  

SciTech Connect

A new reheat gas turbine system is being developed in Japan. The machine consists of two axial flow compressors, three turbines, intercooler, combustor and reheater. The pilot plant is expected to go into operation in 1982, and a prototype plant will be set up in 1984. The major objective of this reheat gas turbine is application to a combined cycle power plant, with LNG burning, and the final target of combined cycle thermal efficiency is to be 55 percent (LHV).

Hori, A.; Takeya, K.

1981-10-01T23:59:59.000Z

124

Gas turbine power plant with supersonic gas compressor - Energy ...  

A gas turbine engine. The engine is based on the use of a gas turbine driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on ...

125

Industrial gas turbines with subatmospheric expansion  

SciTech Connect

A modification is proposed to the basic Brayton cycle, by coupling the gas turbine with a jet pump. This allows subatmospheric pressure to exist at the exit of the turbine, a bigger turbine ratio and, hence, a higher efficiency. The jet pump operates with steam, produced from pressurized water heated by the exhaust gasses of the gas turbine. A simple configuration of the coupling is studied in detail.

Georgiou, D.P. (Patras Univ. (Greece))

1988-01-01T23:59:59.000Z

126

Development of a 70-kW Gas Turbine System as Prime Mover for Multiple Applications  

Science Conference Proceedings (OSTI)

A new, natural-gas-fueled microturbine has been developed for powering cogeneration, cooling systems, and other commercial and light-industrial applications. Compared to internal combustion (reciprocating) engines of similar size, the new microturbine offers customers attractive economics by reducing installation and maintenance costs. This report discusses market forces behind development of this technology and current performance and economics.

1998-12-30T23:59:59.000Z

127

Closed-cycle gas turbine chemical processor  

SciTech Connect

A closed-cycle gas turbine chemical processor separates the functions of combustion air and dilution fluid in a gas turbine combustor. The output of the turbine stage of the gas turbine is cooled and recirculated to its compressor from where a proportion is fed to a dilution portion of its combustor and the remainder is fed to a chemical recovery system wherein at least carbon dioxide is recovered therefrom. Fuel and combustion air are fed to a combustion portion of the gas turbine combustor. In a preferred embodiment of the invention, the gas turbine is employed to drive an electric generator. A heat recovery steam generator and a steam turbine may be provided to recover additional energy from the gas turbine exhaust. The steam turbine may be employed to also drive the electric generator. additional heat may be added to the heat recovery steam generator for enhancing the electricity generated using heat recovery combustors in which the functions of combustion and dilution are separated. The chemical recovery system may employ process steam tapped from an intermediate stage of the steam turbine for stripping carbon dioxide from an absorbent liquid medium which is used to separate it from the gas stream fed to it. As the amount of carbon dioxide in the fuel fed to the chemical processor increases, the amount of process steam required to separate it from the absorbent fluid medium increases and the contribution to generated electricity by the steam turbine correspondingly decreases.

Stahl, C. R.

1985-07-16T23:59:59.000Z

128

Development and Validation of Catalytic Combustion for Gas Turbines, Interim Report  

Science Conference Proceedings (OSTI)

The application of combustion turbines (CTs) for stationary power generation has grown considerably over the past decade and is projected to continue to grow in the future. Strong CT demand is based on several key product attributes associated with combustion turbines -- high efficiency in combined-cycle configurations; low capital, operating, and maintenance costs; high reliability and availability; shortened lead time for permitting and construction; and low emissions. While exhaust emissions from natu...

2000-11-11T23:59:59.000Z

129

Gas turbine topping combustor  

DOE Patents (OSTI)

A combustor for burning a mixture of fuel and air in a rich combustion zone, in which the fuel bound nitrogen in converted to molecular nitrogen. The fuel rich combustion is followed by lean combustion. The products of combustion from the lean combustion are rapidly quenched so as to convert the fuel bound nitrogen to molecular nitrogen without forming NOx. The combustor has an air radial swirler that directs the air radially inward while swirling it in the circumferential direction and a radial fuel swirler that directs the fuel radially outward while swirling it in the same circumferential direction, thereby promoting vigorous mixing of the fuel and air. The air inlet has a variable flow area that is responsive to variations in the heating value of the fuel, which may be a coal-derived fuel gas. A diverging passage in the combustor in front of a bluff body causes the fuel/air mixture to recirculate with the rich combustion zone.

Beer, Janos (Winchester, MA); Dowdy, Thomas E. (Orlando, FL); Bachovchin, Dennis M. (Delmont, PA)

1997-01-01T23:59:59.000Z

130

Gas turbine vane platform element  

SciTech Connect

A gas turbine CMC shroud plate (48A) with a vane-receiving opening (79) that matches a cross-section profile of a turbine vane airfoil (22). The shroud plate (48A) has first and second curved circumferential sides (73A, 74A) that generally follow the curves of respective first and second curved sides (81, 82) of the vane-receiving opening. Walls (75A, 76A, 77A, 78A, 80, 88) extend perpendicularly from the shroud plate forming a cross-bracing structure for the shroud plate. A vane (22) may be attached to the shroud plate by pins (83) or by hoop-tension rings (106) that clamp tabs (103) of the shroud plate against bosses (105) of the vane. A circular array (20) of shroud plates (48A) may be assembled to form a vane shroud ring in which adjacent shroud plates are separated by compressible ceramic seals (93).

Campbell, Christian X. (Oviedo, FL); Schiavo, Anthony L. (Oviedo, FL); Morrison, Jay A. (Oviedo, FL

2012-08-28T23:59:59.000Z

131

Marine gas turbine programs at AlliedSignal  

Science Conference Proceedings (OSTI)

Work has been continuing at AlliedSignal Turbines, located in Phoenix, Arizona, U.S.A., on the integration of their gas turbine programs with those of Textron Lycoming since the merger of the Lycoming gas turbine operations into the AlliedSignal Turbines Group about a year and a half ago. Although much of the gas turbine business and development programs are aimed at the aircraft markets, the industrial and marine gas turbine product area is also receiving significant attention in this combined organization. Of particular importance is the marine market, where the TF40 marine gas turbine is a key element. The TF40 is based on a tested turbine core engine with over ten million hours of operating experience. The compact TF40 gas turbine offers one of the highest power-to-weight ratios in its class. With a length of 1422 mm and a weight of 600 kg without a gearbox, the TF40 can produce 3432 kW boost rating for yachts and military craft and 2984 kW at maximum continuous rating for fast ferries. This paper describes the specifications and variations of the different versions being offered by the company.

NONE

1996-09-01T23:59:59.000Z

132

DOE Research Grant Leads to Gas Turbine Manufacturing Improvements |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Research Grant Leads to Gas Turbine Manufacturing Improvements Research Grant Leads to Gas Turbine Manufacturing Improvements DOE Research Grant Leads to Gas Turbine Manufacturing Improvements August 16, 2011 - 1:00pm Addthis Washington, DC - Research sponsored by the U.S. Department of Energy's Office of Fossil Energy (FE) has led to a new licensing agreement that will improve the performance of state-of-the-art gas turbines, resulting in cleaner, more reliable and affordable energy. The collaborative technology license agreement, penned by Mikro Systems Inc. and Siemens Energy Inc., reflects growth in U.S.-based manufacturing know-how and leadership in cutting-edge technology development and rapid implementation. Gas turbines, which are used to produce electricity for industrial or central power generation applications, consist sequentially of compressor,

133

WEB RESOURCE: Chromalloy Gas Turbine Corporation - TMS  

Science Conference Proceedings (OSTI)

Feb 8, 2007 ... Chromalloy Gas Turbine Corporation is a pioneer in the high temperature coating of jet aircraft engine vanes and blades. Through ...

134

Gas Turbine Plant Modeling for Dynamic Simulation.  

E-Print Network (OSTI)

?? Gas turbines have become effective in industrial applications for electric and thermal energy production partly due to their quick response to load variations. A… (more)

Endale Turie, Samson

2012-01-01T23:59:59.000Z

135

Advanced Materials and Processes for Gas Turbines  

Science Conference Proceedings (OSTI)

Jul 1, 2003 ... Out of Print. Description These proceedings from the United Engineering Foundation's Advanced Materials and Processes for Gas Turbines ...

136

Industrial type gas turbines for offshore applications  

SciTech Connect

The paper discusses, with reference to the power generating gas turbines on the FRIGG TCP-2 platform, the specific and general requirements for offshore gas turbine, and how those sometimes conflicting requirements are met. Furthermore, interesting details of the particular installation on the FRIGG TCP-2 platform are described. The gas turbines on the FRIGG TCP-2 platform are the first ones to be installed in Norwegian water after the Norwegian regulations for ''Production and auxiliary systems on production installations, etc.'' were officially issued in April 1978. Some of these special regulations and their influence on the gas turbine design are discussed. Paper No. 79-GT-105.

Elmhed, G.; Ferm, S.; Svensson, S.O.

1980-04-01T23:59:59.000Z

137

Investigation of flow characteristics of gas turbines  

SciTech Connect

Measurements carried out in the process of assimilation of gas turbine (GT) plants of 16 different types in starting and working conditions to estimate the operational conditions and characteristics of the main elements (in particular of the turbines) have created a basis for generaliztion of flow characteristics of different turbines and for extending them to a wider range of operational conditions. The studies showed that: flow characteristics of the investigated turbines, independently of the number of stages and the degree of reaction, are described by the elliptic flowrate equation; throughput of similar turbines, i.e., of turbines formed of stages with high reaction, which have low design degrees of expansion, can be determined with satisfactory accuracy by the unique function of the degree of expansion; and in operating the gas turbine plants considerable changes in throughput of the turbines are possible.

Ol' khovskii, G.G.; Ol' khovskaya, N.I.

1978-01-01T23:59:59.000Z

138

Gas turbine topping combustor  

DOE Patents (OSTI)

A combustor is described for burning a mixture of fuel and air in a rich combustion zone, in which the fuel bound nitrogen in converted to molecular nitrogen. The fuel rich combustion is followed by lean combustion. The products of combustion from the lean combustion are rapidly quenched so as to convert the fuel bound nitrogen to molecular nitrogen without forming NOx. The combustor has an air radial swirler that directs the air radially inward while swirling it in the circumferential direction and a radial fuel swirler that directs the fuel radially outward while swirling it in the same circumferential direction, thereby promoting vigorous mixing of the fuel and air. The air inlet has a variable flow area that is responsive to variations in the heating value of the fuel, which may be a coal-derived fuel gas. A diverging passage in the combustor in front of a bluff body causes the fuel/air mixture to recirculate with the rich combustion zone. 14 figs.

Beer, J.; Dowdy, T.E.; Bachovchin, D.M.

1997-06-10T23:59:59.000Z

139

Gas turbines fired by solid fuels  

SciTech Connect

Steadily increasing energy requirements have spurred a search for new methods of generating energy from low-cost, abundant fuels. The development of a gas-turbine system equipped for the direct combustion of such fuels is now underway in the U.S. A one-megawatt pilot plant has been operating for over a year, using a fluidized bed to burn coal. The plant has also operated on wood waste and municipal solid waste as fuels. Methods have been developed for the suppression of noxious gases included among the combustion products, but there remain some problems with the removal of particulate matter from the exhaust gas prior to its entry into the turbine. A new high-temperature filter is being installed to alleviate these. A description of the one-megawatt pilot plant is provided, along with a discussion of operational results and mechanical problems and their solutions. A preliminary design for a full-scale plant is included.

Wade, G.L.

1976-01-01T23:59:59.000Z

140

Baseline Gas Turbine Development Program. Twenty-third combined quarterly progress report, May 1, 1978--January 31, 1979  

DOE Green Energy (OSTI)

Progress is reported for a program whose goals are to demonstrate an experimental Upgraded gas turbine-powered automobile which meets the 1978 Federal Emissions Standards, has significantly improved fuel economy, and is competitive in performance, reliability, and potential manufacturing cost with the conventional piston engine-powered, compact-size American automobile. This is the concluding progress report for this program; it covers the period from May 1, 1978 to January 31, 1979. The next formal report will be the final report, which is currently in process. Activity during this reporting period has continued to emphasize development towards correcting a power deficiency in the Upgraded Engine. Efforts are also being directed towards reducing fuel usage through improved heat recovery and towards improving the mechanical reliability and control of the engine.

Pampreen, R C; Wagner, C E [comps.] [comps.

1978-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

A physics-based emissions model for aircraft gas turbine combustors  

E-Print Network (OSTI)

In this thesis, a physics-based model of an aircraft gas turbine combustor is developed for predicting NO. and CO emissions. The objective of the model is to predict the emissions of current and potential future gas turbine ...

Allaire, Douglas L

2006-01-01T23:59:59.000Z

142

Gas fired Advanced Turbine System  

SciTech Connect

The primary objective of the first phase of the Advanced Gas Turbine System (ATS) program was the concept definition of an advanced engine system that meets efficiency and emission goals far exceeding those that can be provided with today`s equipment. The thermal efficiency goal for such an advanced industrial engine was set at 50% some 15 percentage points higher than current equipment levels. Exhaust emissions goals for oxides of nitrogen (NO{sub x}), carbon monoxide (CO), and unburned hydrocarbons (UH) were fixed at 8 parts per million by volume (ppmv), 20 ppmv, and 20 ppmv respectively, corrected to 15% oxygen (O{sub 2}) levels. Other goals had to be addressed; these involved reducing the cost of power produced by 10 percent and improving or maintaining the reliability, availability, and maintainability (RAM) at current levels. This advanced gas turbine was to be fueled with natural gas, and it had to embody features that would allow it bum coal or coal derived fuels.

LeCren, R.T.; White, D.J.

1993-01-01T23:59:59.000Z

143

Gas turbine combustion instability  

DOE Green Energy (OSTI)

Combustion oscillations are a common problem in development of LPM (lean premix) combustors. Unlike earlier, diffusion style combustors, LPM combustors are especially susceptible to oscillations because acoustic losses are smaller and operation near lean blowoff produces a greater combustion response to disturbances in reactant supply, mixing, etc. In ongoing tests at METC, five instability mechanisms have been identified in subscale and commercial scale nozzle tests. Changes to fuel nozzle geometry showed that it is possible to stabilize combustion by altering the timing of the feedback between acoustic waves and the variation in heat release.

Richards, G.A.; Lee, G.T.

1996-09-01T23:59:59.000Z

144

Blade for a gas turbine  

SciTech Connect

A blade is provided for a gas turbine. The blade comprises a main body comprising a cooling fluid entrance channel; a cooling fluid collector in communication with the cooling fluid entrance channel; a plurality of side channels extending through an outer wall of the main body and communicating with the cooling fluid collector and a cooling fluid cavity; a cooling fluid exit channel communicating with the cooling fluid cavity; and a plurality of exit bores extending from the cooling fluid exit channel through the main body outer wall.

Liang, George (Palm City, FL)

2010-10-26T23:59:59.000Z

145

Coatings for gas turbines; Specialized coatings boost, maintain turbine efficiency  

SciTech Connect

Airlines have been coating their jet engines for the past 30 years, thereby avoiding corrosion, erosion and wear. More recently, operators of mechanical-drive gas turbines have come to realize the value of coatings as a way to keep down costs. This paper describes specialized coatings technology which has evolved for gas turbines. Coatings have been designed for specific areas and even specific components within the turbine. Because operators must often request these coatings when buying new equipment or at overhaul, a basic understanding of the technology is presented.

1988-10-01T23:59:59.000Z

146

GE power generation technology challenges for advanced gas turbines  

SciTech Connect

The GE Utility ATS is a large gas turbine, derived from proven GEPG designs and integrated GEAE technology, that utilizes a new turbine cooling system and incorporates advanced materials. This system has the potential to achieve ATS objectives for a utility sized machine. Combined with use of advanced Thermal Barrier Coatings (TBC`s), the new cooling system will allow higher firing temperatures and improved cycle efficiency that represents a significant improvement over currently available machines. Developing advances in gas turbine efficiency and emissions is an ongoing process at GEPG. The third generation, ``F`` class, of utility gas turbines offers net combined cycle efficiencies in the 55% range, with NO{sub x} programs in place to reduce emissions to less than 10 ppM. The gas turbines have firing temperatures of 2350{degree}F, and pressure ratios of 15 to 1. The turbine components are cooled by air extracted from the cycle at various stages of the compressor. The heat recovery cycle is a three pressure steam system, with reheat. Throttle conditions are nominally 1400 psi and 1000{degree}F reheat. As part of GEPG`s ongoing advanced power generation system development program, it is expected that a gas fired advanced turbine system providing 300 MW power output greater than 58% net efficiency and < 10 ppM NO{sub x} will be defined. The new turbine cooling system developed with technology support from the ATS program will achieve system net efficiency levels in excess of 60%.

Cook, C.S.; Nourse, J.G.

1993-11-01T23:59:59.000Z

147

Method for detecting gas turbine engine flashback  

SciTech Connect

A method for monitoring and controlling a gas turbine, comprises predicting frequencies of combustion dynamics in a combustor using operating conditions of a gas turbine, receiving a signal from a sensor that is indicative of combustion dynamics in the combustor, and detecting a flashback if a frequency of the received signal does not correspond to the predicted frequencies.

Singh, Kapil Kumar; Varatharajan, Balachandar; Kraemer, Gilbert Otto; Yilmaz, Ertan; Lacy, Benjamin Paul

2012-09-04T23:59:59.000Z

148

Gas Turbine Recuperators: Benefits and Status  

Science Conference Proceedings (OSTI)

Distributed resources (DR) are projected to be an expanding part of the power generation mix in the future -- with conventional industrial and aeroderivative gas turbines as well as emerging microturbine products playing an important role. This report assesses the role of recuperators in improving the power generation efficiency of simple-cycle gas turbines and microturbines.

2000-01-19T23:59:59.000Z

149

Performance and supply of fluids in a modern gas turbine.  

E-Print Network (OSTI)

??This thesis considers the role fluids play in improving the efficiency and reducing the environmental impact of modern gas turbines. This includes gas turbines used… (more)

Askins, John Stephen

2010-01-01T23:59:59.000Z

150

DOE Research Grant Leads to Gas Turbine Manufacturing Improvements...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Research Grant Leads to Gas Turbine Manufacturing Improvements DOE Research Grant Leads to Gas Turbine Manufacturing Improvements August 16, 2011 - 1:00pm Addthis Washington,...

151

Making of Alloy 706 Ingot for Gas Turbine Parts  

Science Conference Proceedings (OSTI)

MAKING OF ALLOY 706 INGOT FOR GAS TURBINE PARTS ... In general, Alloy 706 ingots for gas turbine parts are made by the VIM-ESR-VAR triple melt ...

152

Alternative Cooling and Mounting Concepts for Transition Duct in Industrial Gas Turbines at Siemens Industrial Turbomachinery AB.  

E-Print Network (OSTI)

?? Gas turbine development is constantly moving forward and for higher efficiency hotter turbine inlet temperature is required. Because of that, one of the largest… (more)

Öfverstedt, Tomas

2011-01-01T23:59:59.000Z

153

Intercooler flow path for gas turbines: CFD design and experiments  

DOE Green Energy (OSTI)

The Advanced Turbine Systems (ATS) program was created by the U.S. Department of Energy to develop ultra-high efficiency, environmentally superior, and cost competitive gas turbine systems for generating electricity. Intercooling or cooling of air between compressor stages is a feature under consideration in advanced cycles for the ATS. Intercooling entails cooling of air between the low pressure (LP) and high pressure (HP) compressor sections of the gas turbine. Lower air temperature entering the HP compressor decreases the air volume flow rate and hence, the compression work. Intercooling also lowers temperature at the HP discharge, thus allowing for more effective use of cooling air in the hot gas flow path.

Agrawal, A.K.; Gollahalli, S.R.; Carter, F.L. [Univ. of Oklahoma, Norman, OK (United States)] [and others

1995-12-31T23:59:59.000Z

154

Gas Turbine Overhaul Plan (GTOP) for GE 9FA  

Science Conference Proceedings (OSTI)

The Gas Turbine Overhaul Plan (GTOP) General Electric 9FA software enables users to plan, manage, and document major overhauls of General Electric Model MS9001FA simple-cycle gas turbines and electric generators. Description The GTOP General Electric 9FA software has been developed to aid the power industry with cost-effective and efficient planning, scheduling, and execution of major overhauls of General Electric Model MS9001FA simple-cycle gas turbine generator units using computer-based techniques. T...

2007-11-30T23:59:59.000Z

155

Conjugate Heat Transfer with Large Eddy Simulation for Gas Turbine Components.  

E-Print Network (OSTI)

Conjugate Heat Transfer with Large Eddy Simulation for Gas Turbine Components. Florent Duchaine constraint for GT (gas turbines). Most existing CHT tools are developped for chained, steady phenomena with colder walls is a key phenomenon in all chambers and is actually a main design constraint in gas turbines

Nicoud, Franck

156

American Institute of Aeronautics and Astronautics PERFORMANCE INVESTIGATION OF SMALL GAS TURBINE ENGINES  

E-Print Network (OSTI)

American Institute of Aeronautics and Astronautics 1 PERFORMANCE INVESTIGATION OF SMALL GAS TURBINE and topped engines. INTRODUCTION Gas turbines are typical power sources used in a wide size range, development, and application of small gas turbines yielding high power density and enabling low-cost air

MĂĽller, Norbert

157

Automated DecisionAnalytic Diagnosis of Thermal Performance in Gas Turbines  

E-Print Network (OSTI)

Automated Decision­Analytic Diagnosis of Thermal Performance in Gas Turbines To be presented Abstract We have developed an expert system for diagno­ sis of e#ciency problems for large gas turbines the ultimate goal of applying the system in the day­to­day maintenance of gas­ turbine power plants. A Overview

Horvitz, Eric

158

Automated Decision-Analytic Diagnosis of Thermal Performance in Gas Turbines  

E-Print Network (OSTI)

Automated Decision-Analytic Diagnosis of Thermal Performance in Gas Turbines To be presented Abstract We have developed an expert system for diagno- sis of efficiency problems for large gas turbines the ultimate goal of applying the system in the day-to-day maintenance of gas- turbine power plants. A Overview

Horvitz, Eric

159

Improving Model-Based Gas Turbine Fault Diagnosis Using Multi-Operating Point Method  

Science Conference Proceedings (OSTI)

A comprehensive gas turbine fault diagnosis system has been designed using a full nonlinear simulator developed in Turbotec company for the V94.2 industrial gas turbine manufactured by Siemens AG. The methods used for detection and isolation of faulty ... Keywords: monitoring, fault diagnosis, extended Kalman filter, gas turbine, simulator

Amin Salar; Seyed Mehrdad Hosseini; Behnam Rezaei Zangmolk; Ali Khaki Sedigh

2010-11-01T23:59:59.000Z

160

Constrained model predictive control implementation for a heavy-duty gas turbine power plant  

Science Conference Proceedings (OSTI)

In this paper, model predictive control (MPC) strategy is implemented to a GE9001E gas turbine power plant. A linear model is developed for the gas turbine using conventional mathematical models and ARX identification procedure. Also a process control ... Keywords: ARX, PID, gas turbine, identification, modeling, multivariable control, power plant, predictive control

Hadi Ghorbani; Ali Ghaffari; Mehdi Rahnama

2008-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

A Portable Expert System for Gas Turbine Maintenance  

E-Print Network (OSTI)

Combustion turbines for electric power generation and industrial applications have steadily increased in size, efficiency and prominence. The newest class of gas turbine-generators coming into service will deliver 150 megawatts, with turbine inlet temperatures of 2300° F. To sustain high levels of performance and reliability of this equipment, diagnostics and maintenance planning have also become increasingly important. Within the electric power industry, for example, as the overall fleet of gas turbines has aged, their annual service factor has increased to carry more of the peak load burden as reserve margins shrink. However, peaking duty requires frequent cycling with large thermal stresses that tend to shorten the life of hot section components. To assist the industry in meeting these needs, EPRI has developed The SA?VANT™ System. This unique multi-faceted portable unit will apply a broad range of expert systems in the workplace for power plant maintenance, including turbomachinery of all types, but especially for gas turbines.

Quentin, G. H.

1989-09-01T23:59:59.000Z

162

Steam Turbine Developments  

Science Conference Proceedings (OSTI)

...O. Jonas, Corrosion of Steam Turbines, Corrosion: Environments and Industries, Vol 13C, ASM Handbook, ASM International, 2006, p 469â??476...

163

Large Diameter 718 Ingots for Land-Based Gas Turbines  

Science Conference Proceedings (OSTI)

h'ew high efficiency land based gas turbines made by General Electric ... Materials used for turbine rotors in land-based gas turbines have typically been CrMoV ...

164

Airfoil for a gas turbine  

SciTech Connect

An airfoil is provided for a gas turbine comprising an outer structure comprising a first wall, an inner structure comprising a second wall spaced relative to the first wall such that a cooling gap is defined between at least portions of the first and second walls, and seal structure provided within the cooling gap between the first and second walls for separating the cooling gap into first and second cooling fluid impingement gaps. An inner surface of the second wall may define an inner cavity. The inner structure may further comprise a separating member for separating the inner cavity of the inner structure into a cooling fluid supply cavity and a cooling fluid collector cavity. The second wall may comprise at least one first impingement passage, at least one second impingement passage, and at least one bleed passage.

Liang, George (Palm City, FL)

2011-01-18T23:59:59.000Z

165

Regenerator for gas turbine engine  

DOE Patents (OSTI)

A rotary disc-type counterflow regenerator for a gas turbine engine includes a disc-shaped ceramic core surrounded by a metal rim which carries a coaxial annular ring gear. Bonding of the metal rim to the ceramic core is accomplished by constructing the metal rim in three integral portions: a driving portion disposed adjacent the ceramic core which carries the ring gear, a bonding portion disposed further away from the ceramic core and which is bonded thereto by elastomeric pads, and a connecting portion connecting the bonding portion to the driving portion. The elastomeric pads are bonded to radially flexible mounts formed as part of the metal rim by circumferential slots in the transition portion and lateral slots extending from one end of the circumferential slots across the bonding portion of the rim.

Lewakowski, John J. (Warren, MI)

1979-01-01T23:59:59.000Z

166

New gas turbine sales, refurbishment organization formed  

Science Conference Proceedings (OSTI)

UNC Metcalf, a gas turbine overhaul shop headquartered in Odessa, Texas, has been restructured Into UNC Industrial Power, thus tying the corporation`s various entities into a cohesive business base that now specializes in new and refurbished gas turbine engine packages for cogeneration, gas compression and industrial requirements worldwide. This article discusses the business strategy and goals as wells as markets serviced by the company. 3 figs.

Hopkins, E.

1997-01-01T23:59:59.000Z

167

A Wood-Fired Gas Turbine Plant  

E-Print Network (OSTI)

This paper covers the research and development of a wood-fired gas turbine unit that is used for generating electricity. The system uses one large cyclonic combustor and a cyclone cleaning system in series to provide hot gases to drive an Allison T-56 aircraft engine (the industrial version is the 501-k). A Westinghouse 3,000-kW generator is used on the prototype facility with a Philadelphia gear system reducing the 14,000-rpm turbine output speed to the 3,600-rpm generator operating speed. Fuel is fed into the combustor by a rotary valve system. The swirling effect of the cyclone combustor ensures that residence time is adequate to completely burn all solid particles in the combustor ahead of the cyclone filter. Burning of particles on the metal walls of the cyclone filter could cause overheating and deterioration of the walls. This wood-fired gas turbine unit could provide a low cost source of power for areas where conventional methods are now prohibitive and provide a means for recovering energy from a source that now poses disposal problems.

Powell, S. H.; Hamrick, J. T.

1986-06-01T23:59:59.000Z

168

Advanced Turbine Systems Program conceptual design and product development. Task 3.0, Selection of natural gas-fired Advanced Turbine System  

DOE Green Energy (OSTI)

This report presents results of Task 3 of the Westinghouse ATS Phase II program. Objective of Task 3 was to analyze and evaluate different cycles for the natural gas-fired Advanced Turbine Systems in order to select one that would achieve all ATS program goals. About 50 cycles (5 main types) were evaluated on basis of plant efficiency, emissions, cost of electricity, reliability-availability-maintainability (RAM), and program schedule requirements. The advanced combined cycle was selected for the ATS plant; it will incorporate an advanced gas turbine engine as well as improvements in the bottoming cycle and generator. Cost and RAM analyses were carried out on 6 selected cycle configurations and compared to the baseline plant. Issues critical to the Advanced Combined Cycle are discussed; achievement of plant efficiency and cost of electricity goals will require higher firing temperatures and minimized cooling of hot end components, necessitating new aloys/materials/coatings. Studies will be required in combustion, aerodynamic design, cooling design, leakage control, etc.

NONE

1994-12-01T23:59:59.000Z

169

Gas turbine-steam power plant  

SciTech Connect

The pressure vessel of the gas turbine-steam power plant is provided with a recuperator and a heat exchanger in order to reduce the temperature of the hot flue gas before separating out gas-entrained particles. The dust separator is connected to the recuperator on a secondary side so that the hot gas can be reheated for delivery to the gas turbine. By cooling the flue gas before entering the separator, use can be made of electrostatic dust filters or cloth filters.

Aguet, E.

1984-07-31T23:59:59.000Z

170

Aero-engine derivative gas turbines for power generation: Thermodynamic and economic perspectives  

Science Conference Proceedings (OSTI)

Aero-engine technology has played a major part in the development of both the industrial gas turbine and, more recently, the combined cycle gas turbine (CCGT) plant. A distinction may be drawn between the direct use of developed aero-engine hardware in power generation (and in marine applications), and the more indirect influence of aero-engine technology, particularly in design of heavy-duty gas turbines. Both the direct use of aero-engine hardware, in gas turbines for power generation, and the indirect influence of aero-engine technology, in the design of more conventional heavy-duty plants (including combined cycle gas turbines, CCGTs), are reviewed.

Horlock, J.H. [Whittle Lab., Cambridge (United Kingdom)

1997-01-01T23:59:59.000Z

171

Basic Science Simulations Provide New Insights to Aid Hydrogen Gas Turbine Development (Fact Sheet), NREL Highlights, Science  

DOE Green Energy (OSTI)

Massive first-principles simulation provides insight into flame anchoring in a hydrogen-rich jet in cross-flow. When gas turbine designers want to use gasified biomass for stationary power generation, they are faced with a challenge: bio-derived syngas typically contains significant amounts of hydrogen, which is far more reactive than the methane that is the traditional gas turbine fuel. This reactivity leads to a safety design issue, because with hydrogen-rich fuels a flame may anchor in the fuel injection section of the combustor instead of the downstream design point. In collaboration with Jacqueline Chen of Sandia National Laboratories and Andrea Gruber of SINTEF, a Norwegian energy think tank, the National Renewable Energy Laboratory (NREL) is carrying out fundamental simulations to provide new insight into the physics of flame anchoring in canonical 'jet in cross-flow' configurations using hydrogen-rich fuels. To deal with the large amount and complexity of the data, the combustion scientists also teamed up with computer scientists from across the U.S. Department of Energy's laboratories to develop novel ways to analyze the data. These simulations have shown that fine-scale turbulence structures formed at the jet boundary provide particularly intense mixing between the fuel and air, which then enters a quiescent region formed downstream of the jet in a separate, larger turbulent structure. This insight explains the effect that reducing the wall-normal velocity of the fuel jet causes the flame to blow off; with the aid of the simulation, we now understand this counterintuitive result because reducing the wall-normal velocity would reduce the intensity of the mixing as well as move the quiescent region farther downstream. NREL and its research partners are conducting simulations that provide new insight into the physics of flame anchoring in canonical 'jet in cross-flow' configurations using hydrogen-rich fuels. Simulation results explain the mechanism behind flame blow-off occurring when a component in the cross-flow direction is progressively added to the jet velocity vector, thereby reducing the relative impact of its wall-normal velocity component. Understanding the mechanism for flame anchoring aids the design of fuel injection nozzles that meet safety requirements when using hydrogen-rich fuels.

Not Available

2011-11-01T23:59:59.000Z

172

Stresa, Italy, 26-28 April 2006 A SILICON-BASED MICRO GAS TURBINE ENGINE FOR POWER GENERATION  

E-Print Network (OSTI)

Stresa, Italy, 26-28 April 2006 A SILICON-BASED MICRO GAS TURBINE ENGINE FOR POWER GENERATION X. C in developing a micro power generation system based on gas turbine engine and piezoelectric converter. The micro gas turbine engine consists of a micro combustor, a turbine and a centrifugal compressor

Paris-Sud XI, Université de

173

DOE-Sponsored Research Improves Gas Turbine Performance  

Energy.gov (U.S. Department of Energy (DOE))

Small Business Innovative Research Grants Achieve Commercialization Goals for Novel Gas Turbine Manufacturing Technology

174

New PGT 25 gas turbine for mechanical drive applications  

SciTech Connect

Italy's Nuovo Pignone developed a heavy-duty power turbine designed primarily to match General Electric's LM 2500 gas generator in its various configurations such as the -20, -30, and -33 models. A two-stage unit running at 6500 rpm, the PGT-25 gas turbine matches the speed of Nuovo Pignone's 20 MW-class pipeline compressors that can operate at their highest efficiency through a direct coupling to the turbine. The PGT-25's structural simplicity offers durability, advanced fluid dynamic design for maximum efficiency at partial loads, and modularity for easy transport and assembly.

Chellini, R.

1984-06-01T23:59:59.000Z

175

GAS TURBINE REHEAT USING IN SITU COMBUSTION  

Science Conference Proceedings (OSTI)

In situ reheat is an alternative to traditional gas turbine reheat design in which fuel is fed through airfoils rather than in a bulky discrete combustor separating HP and LP turbines. The goals are to achieve increased power output and/or efficiency without higher emissions. In this program the scientific basis for achieving burnout with low emissions has been explored. In Task 1, Blade Path Aerodynamics, design options were evaluated using CFD in terms of burnout, increase of power output, and possible hot streaking. It was concluded that Vane 1 injection in a conventional 4-stage turbine was preferred. Vane 2 injection after vane 1 injection was possible, but of marginal benefit. In Task 2, Combustion and Emissions, detailed chemical kinetics modeling, validated by Task 3, Sub-Scale Testing, experiments, resulted in the same conclusions, with the added conclusion that some increase in emissions was expected. In Task 4, Conceptual Design and Development Plan, Siemens Westinghouse power cycle analysis software was used to evaluate alternative in situ reheat design options. Only single stage reheat, via vane 1, was found to have merit, consistent with prior Tasks. Unifying the results of all the tasks, a conceptual design for single stage reheat utilizing 24 holes, 1.8 mm diameter, at the trailing edge of vane 1 is presented. A development plan is presented.

D.M. Bachovchin; T.E. Lippert; R.A. Newby P.G.A. Cizmas

2004-05-17T23:59:59.000Z

176

Combustion gas turbine/steam generator plant  

SciTech Connect

A fired steam generator is described that is interconnected with a gas turbine/steam generator plant having at least one gas turbine group followed by an exhaust-gas steam generator. The exhaust-gas steam generator has a preheater and an evaporator. The inlet of the preheater is connected to a feedwater distribution line which also feeds a preheater in the fired steam generator. The outlet of the preheater is connected to the evaporator of the fired steam generator. The evaporator outlet of the exhaust-gas steam generator is connected to the input of a superheater in the fired steam generator.

Aguet, E.

1975-11-18T23:59:59.000Z

177

Proceedings: 1989 EPRI Gas Turbine Procurement Seminar  

Science Conference Proceedings (OSTI)

Information presented in this workshop will enable equipment specifiers to formulate more-effective specifications for new gas turbine generating equipment. Properly drafted specifications improve the quality of a procurement and can result in lower unit life-cycle cost.

1990-03-22T23:59:59.000Z

178

Gas Turbine Rotor Life: Material Testing  

Science Conference Proceedings (OSTI)

Gas turbine rotor materials are subject to degradation from prolonged hours and multiple start/stop cycles of operation. Periodically, plant operators disassemble the compressor and turbine sections of the rotor system and inspect the components for signs of creep, embrittlement, corrosion, thermal fatigue, and high- and low-cycle fatigue. Beyond limited rotor inspections performed during hot gas path inspections and major overhauls, a more thorough inspection is often required by the equipment ...

2012-12-14T23:59:59.000Z

179

Gas Turbine Rotor Life Assessment Guideline  

Science Conference Proceedings (OSTI)

Gas turbine rotor materials are subject to degradation from prolonged hours and multiple start/stop cycles of operation. Periodically, plant operators disassemble the compressor and turbine sections of the rotor system and inspect the components for signs of creep, embrittlement, corrosion, thermal fatigue, and high- and low-cycle fatigue. Beyond limited rotor inspections performed during hot gas path inspections and major overhauls, a more thorough inspection is often required by the equipment manufactu...

2011-12-14T23:59:59.000Z

180

Gas Turbine Component Repair Shop Capabilities  

Science Conference Proceedings (OSTI)

Aftermarket repair services for gas turbine OM has been undergoing continual transformation beginning with the emergence of independent shops in the 1980s. The original equipment manufacturers (OEMs) in the late 1990s began to aggressively pursue repair services. Gas turbine hot section component repair/replacement coupled with inspection/overhaul technical support has come to be offered as long-term service agreements (LTSAs). These agreements often extend from 6 to 18 years. The repair business continu...

2011-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Method and apparatus for preventing overspeed in a gas turbine  

DOE Patents (OSTI)

A method and apparatus for preventing overspeed in a gas turbine in response to the rapid loss of applied load is disclosed. The method involves diverting gas from the inlet of the turbine, bypassing the same around the turbine and thereafter injecting the diverted gas at the turbine exit in a direction toward or opposing the flow of gas through the turbine. The injected gas is mixed with the gas exiting the turbine to thereby minimize the thermal shock upon equipment downstream of the turbine exit.

Walker, William E. (San Diego, CA)

1976-01-01T23:59:59.000Z

182

Microsoft PowerPoint - 2010-10-20-Gas_Turbine_Review-ju_fld_rjs  

NLE Websites -- All DOE Office Websites (Extended Search)

hydrogen Development of validated high hydrogen syngas kinetic mechanism at pressures of gas turbine conditions * Development of computationally efficient, reduced kinetic...

183

Gas turbine engines with particle traps  

DOE Patents (OSTI)

A gas turbine engine (10) incorporates a particle trap (46) that forms an entrapment region (73) in a plenum (24) which extends from within the combustor (18) to the inlet (32) of a radial-inflow turbine (52, 54). The engine (10) is thereby adapted to entrap particles that originate downstream from the compressor (14) and are otherwise propelled by combustion gas (22) into the turbine (52, 54). Carbonaceous particles that are dislodged from the inner wall (50) of the combustor (18) are incinerated within the entrapment region (73) during operation of the engine (10).

Boyd, Gary L. (Tempe, AZ); Sumner, D. Warren (Phoenix, AZ); Sheoran, Yogendra (Scottsdale, AZ); Judd, Z. Daniel (Phoenix, AZ)

1992-01-01T23:59:59.000Z

184

Castability of 718Plus® Alloy for Structural Gas Turbine Engine ...  

Science Conference Proceedings (OSTI)

This technology will be implemented for the manufacture of gas turbine structural components ... Cast Alloys for Advanced Ultra Supercritical Steam Turbines.

185

Advanced turbine systems program--conceptual design and product development. Quarterly report, November 1994--January 1995  

SciTech Connect

Research continued in the design and development of advanced gas turbine systems. This report presents progress towards turbine blade development, diffuser development, combustion noise investigations,catalytic combustion development, and diagnostic probe development.

1995-02-01T23:59:59.000Z

186

Hydrogen turbines for space power systems: A simplified axial flow gas turbine model  

SciTech Connect

This paper descirbes a relatively simple axial flow gas expansion turbine mass model, which we developed for use in our space power system studies. The model uses basic engineering principles and realistic physical properties, including gas conditions, power level, and material stresses, to provide reasonable and consistent estimates of turbine mass and size. Turbine design modifications caused by boundary layer interactions, stress concentrations, stage leakage, or bending and thermal stresses are not accounted for. The program runs on an IBM PC, uses little computer time and has been incorporated into our system-level space power platform analysis computer codes. Parametric design studies of hydrogen turbines using this model are presented for both nickel superalloy and carbon/carbon composite turbines. The effects of speed, pressure ratio, and power level on hydrogen turbine mass are shown and compared to a baseline case 100-MWe, 10,000-rpm hydrogen turbine. Comparison with more detailed hydrogen turbine designs indicates that our simplified model provides mass estimates that are within 25% of the ones provided by more complex calculations. 8 figs.

Hudson, S.L.

1988-01-01T23:59:59.000Z

187

Gas Turbine Engine Collaborative Research - NASA Glenn Research Center  

NLE Websites -- All DOE Office Websites (Extended Search)

Gas Turbine Engine Collaborative Gas Turbine Engine Collaborative Research-NASA Glenn Research Center Background Advancing the efficiency and performance levels of gas turbine technology requires high levels of fundamental understanding of the actual turbine component level technology systems. The National Aeronautics and Space Administration Glenn Research Center (NASA Glenn), with support from the Ohio State University, is planning research to compile

188

The evaporative gas turbine (EGT) cycle  

SciTech Connect

Humidification of the flow through a gas turbine has been proposed in a variety of forms. The STIG plant involves the generation of steam by the gas turbine exhaust in a heat recovery steam generator (HRSG), and its injection into or downstream of the combustion chamber. This increases the mass flow through the turbine and the power output from the plant, with a small increase in efficiency. In the evaporative gas turbine (or EGT) cycle, water is injected in the compressor discharge in a regenerative gas turbine cycle (a so-called CBTX plant--compressor [C], burner [B], turbine [T], heat exchanger [X]); the air is evaporatively cooled before it enters the heat exchanger. While the addition of water increases the turbine mass flow and power output, there is also apparent benefit in reducing the temperature drop in the exhaust stack. In one variation of the basic EGT cycle, water is also added downstream of the evaporative aftercooler, even continuously in the heat exchanger. There are several other variations on the basic cycle (e.g., the cascaded humidified advanced turbine [CHAT]). The present paper analyzes the performance of the EGT cycle. The basic thermodynamics are first discussed, and related to the cycle analysis of a dry regenerative gas turbine plant. Subsequently some detailed calculations of EGT cycles are presented. The main purpose of the work is to seek the optimum pressure ratio in the EGT cycle for given constraints (e.g., fixed maximum to minimum temperature). It is argued that this optimum has a relatively low value.

Horlock, J.H. [Whittle Lab., Cambridge (United Kingdom)

1998-04-01T23:59:59.000Z

189

10 Solar powerplants. gas turbines packaged for offshore gas platform  

SciTech Connect

Weatherby Engineering Co. neared completion recently of 8 modules mounting a total of 9 gas turbine engines, all destined for an offshore gas injection platform. The platform capacity is 80 MMcfd. The inlet pressure on the platform is 45 psig and the discharge pressure is 3,410 psig. The system constitutes a complete gas dehydration and compressor station and the modules house the gas turbines which drive the centrifugal and reciprocating compressors for gas injection service, and 2 gas turbine-powered generating units to supply electric power for the platform complex. The gas turbines and compressors are installed in sound attenuated enclosures. These complete power packages are built up by Solar and supplied to Weatherby for the project. The complete module is described.

Alberte, T.

1976-05-01T23:59:59.000Z

190

An acoustic energy framework for predicting combustion- driven acoustic instabilities in premixed gas-turbines  

E-Print Network (OSTI)

of Engineering for Gas Turbines and Power, 2000. Vol. 122:of Engineering for Gas Turbines and Power, 2000. Vol. 122:in Lean Premixed Gas Turbine Combustors," Journal of

Ibrahim, Zuhair M. A.

2007-01-01T23:59:59.000Z

191

Experimental Study of Main Gas Ingestion and Purge Gas Egress Flow in Model Gas Turbine Stages.  

E-Print Network (OSTI)

??Efficient performance of gas turbines depends, among several parameters, on the mainstream gas entry temperature. At the same time, transport of this high temperature gas… (more)

Balasubramanian, Jagdish Harihara

2010-01-01T23:59:59.000Z

192

A Review of Materials for Gas Turbines Firing Syngas Fuels  

SciTech Connect

Following the extensive development work carried out in the 1990's, gas turbine combined-cycle (GTCC) systems burning natural gas represent a reliable and efficient power generation technology widely used in many parts of the world. A critical factor was that, in order to operate at the high turbine entry temperatures required for high efficiency operation, aero-engine technology, i.e., single-crystal blades, thermal barrier coatings, and sophisticated cooling techniques had to be rapidly scaled up and introduced into these large gas turbines. The problems with reliability that resulted have been largely overcome, so that the high-efficiency GTCC power generation system is now a mature technology, capable of achieving high levels of availability. The high price of natural gas and concern about emission of greenhouse gases has focused attention on the desirability of replacing natural gas with gas derived from coal (syngas) in these gas turbine systems, since typical systems analyses indicate that IGCC plants have some potential to fulfil the requirement for a zero-emissions power generation system. In this review, the current status of materials for the critical hot gas path parts in large gas turbines is briefly considered in the context of the need to burn syngas. A critical factor is that the syngas is a low-Btu fuel, and the higher mass flow compared to natural gas will tend to increase the power output of the engine. However, modifications to the turbine and to the combustion system also will be necessary. It will be shown that many of the materials used in current engines will also be applicable to units burning syngas but, since the combustion environment will contain a greater level of impurities (especially sulfur, water vapor, and particulates), the durability of some components may be prejudiced. Consequently, some effort will be needed to develop improved coatings to resist attack by sulfur-containing compounds, and also erosion.

Gibbons, Thomas [ORNL; Wright, Ian G [ORNL

2009-05-01T23:59:59.000Z

193

A Review of Materials for Gas Turbines Firing Syngas Fuels  

SciTech Connect

Following the extensive development work carried out in the 1990's, gas turbine combined-cycle (GTCC) systems burning natural gas represent a reliable and efficient power generation technology widely used in many parts of the world. A critical factor was that, in order to operate at the high turbine entry temperatures required for high efficiency operation, aero-engine technology, i.e., single-crystal blades, thermal barrier coatings, and sophisticated cooling techniques had to be rapidly scaled up and introduced into these large gas turbines. The problems with reliability that resulted have been largely overcome, so that the high-efficiency GTCC power generation system is now a mature technology, capable of achieving high levels of availability. The high price of natural gas and concern about emission of greenhouse gases has focused attention on the desirability of replacing natural gas with gas derived from coal (syngas) in these gas turbine systems, since typical systems analyses indicate that IGCC plants have some potential to fulfil the requirement for a zero-emissions power generation system. In this review, the current status of materials for the critical hot gas path parts in large gas turbines is briefly considered in the context of the need to burn syngas. A critical factor is that the syngas is a low-Btu fuel, and the higher mass flow compared to natural gas will tend to increase the power output of the engine. However, modifications to the turbine and to the combustion system also will be necessary. It will be shown that many of the materials used in current engines will also be applicable to units burning syngas but, since the combustion environment will contain a greater level of impurities (especially sulfur, water vapor, and particulates), the durability of some components may be prejudiced. Consequently, some effort will be needed to develop improved coatings to resist attack by sulfur-containing compounds, and also erosion.

Gibbons, Thomas [ORNL; Wright, Ian G [ORNL

2009-05-01T23:59:59.000Z

194

Test Program for High Efficiency Gas Turbine Exhaust Diffuser  

DOE Green Energy (OSTI)

This research relates to improving the efficiency of flow in a turbine exhaust, and thus, that of the turbine and power plant. The Phase I SBIR project demonstrated the technical viability of “strutlets” to control stalls on a model diffuser strut. Strutlets are a novel flow-improving vane concept intended to improve the efficiency of flow in turbine exhausts. Strutlets can help reduce turbine back pressure, and incrementally improve turbine efficiency, increase power, and reduce greenhouse gas emmission. The long-term goal is a 0.5 percent improvement of each item, averaged over the US gas turbine fleet. The strutlets were tested in a physical scale model of a gas turbine exhaust diffuser. The test flow passage is a straight, annular diffuser with three sets of struts. At the end of Phase 1, the ability of strutlets to keep flow attached to struts was demonstrated, but the strutlet drag was too high for a net efficiency advantage. An independently sponsored followup project did develop a highly-modified low-drag strutlet. In combination with other flow improving vanes, complicance to the stated goals was demonstrated for for simple cycle power plants, and to most of the goals for combined cycle power plants using this particular exhaust geometry. Importantly, low frequency diffuser noise was reduced by 5 dB or more, compared to the baseline. Appolicability to other diffuser geometries is yet to be demonstrated.

Norris, Thomas R.

2009-12-31T23:59:59.000Z

195

Small gas-turbine-engine technology  

SciTech Connect

Performance of small gas turbine engines in the 250 to 1000 hp size range is significantly lower than that of large engines. Engines of this size are typically used in rotorcraft, commutercraft, general aviation, and cruise missile applications. Principal reasons for lower efficiencies of smaller engines are well known: Component efficiencies are lower by as much as 8 to 10 percentage points because of size effects. Small engines are designed for lower cycle pressures and temperatures because of smaller blading and cooling limitations. The highly developed analytical and manufacturing techniques evolved for large engines are not directly transferrable to small engines. Thus, it has been recognized that a focused effort addressing technologies for small engines was needed and could significantly impact their performance. Recently, in-house and contract studies were undertaken to identify advanced engine cycle and component requirements for substantial performance improvement of small gas turbines for projected year 2000 applications. This paper presents results of both in-house research and contract studies, conducted with Allison, AVCO Lycoming, Garrett, Teledyne CAE, and Williams International Rotorcraft results are emphasized. Projected fuel savings of 22-42% could be attained. Accompanying direct operating cost reductions of 11-17%, depending on fuel cost, were also estimated. High payoff technologies are identified for all engine applications, and recent results of experimental research to evolve the high payoff technologies are described.

Niedwiecki, R.W.; Meitner, P.L.

1991-01-01T23:59:59.000Z

196

How many gas turbines. Part 1  

SciTech Connect

This paper reports that gas turbine technology can serve a range of application needs. The short lead time and low capital cost of simple-cycle gas turbines make these units ideally suitable for peaking applications. Should oil/natural gas fuel prices increase, existing simple-cycle plants can have a steam cycle added which leads to an efficient combines-cycle plant. Should the need arise, a coal gasifier can be added so that coal can be used as the fuel for the combined-cycle plant. Gas turbine technology has high reliability and availability. High gas turbine reliability leads to high system reliability and the ability to lower overall generation system serve margin requirements. Lower reserve margin requirements lead to decreased needs for future capacity which can yield large capital and economic savings. Based on EPRI TAG economic data DRI fuel cost projections, simple-cycle gas turbines and combined-cycle plants are and will remain the most economic capacity additions during the 1990s.

Kaupang, B.M.; Oplinger, J.L.; Stoll, H.G.; Taylor, T.M. (General Electric Corp. (US))

1991-07-01T23:59:59.000Z

197

Adaptive simulation of gas turbine performance  

SciTech Connect

A method is presented allowing the simulation of gas turbine performance with the possibility of adapting to engine particularities. Measurements along the gas path are used, in order to adapt a given performance model by appropriate modification of the component maps. The proposed method can provide accurate simulation for engines of the same type, differing due to manufacturing or assembly tolerances. It doesn't require accurate component maps, as they are derived during the adaptation process. It also can be used for health monitoring purposes, introducing thus a novel approach for component condition assessment. The effectiveness of the proposed method is demonstrated by application to an industrial gas turbine.

Stamatis, A.; Mathioudakis, K.; Papailiou, K.D. (Ethnikon Metsovion Polytechneion, Athens (Greece))

1990-04-01T23:59:59.000Z

198

Fuel Interchangeability Considerations for Gas Turbine Combustion  

DOE Green Energy (OSTI)

In recent years domestic natural gas has experienced a considerable growth in demand particularly in the power generation industry. However, the desire for energy security, lower fuel costs and a reduction in carbon emissions has produced an increase in demand for alternative fuel sources. Current strategies for reducing the environmental impact of natural gas combustion in gas turbine engines used for power generation experience such hurdles as flashback, lean blow-off and combustion dynamics. These issues will continue as turbines are presented with coal syngas, gasified coal, biomass, LNG and high hydrogen content fuels. As it may be impractical to physically test a given turbine on all of the possible fuel blends it may experience over its life cycle, the need to predict fuel interchangeability becomes imperative. This study considers a number of historical parameters typically used to determine fuel interchangeability. Also addressed is the need for improved reaction mechanisms capable of accurately modeling the combustion of natural gas alternatives.

Ferguson, D.H.

2007-10-01T23:59:59.000Z

199

NREL: Wind Research - Small Wind Turbine Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Small Wind Turbine Development Small Wind Turbine Development A photo of Southwest Windpower's Skystream wind turbine in front of a home. PIX14936 Southwest Windpower's Skystream wind turbine. A photo of the Endurance wind turbine. PIX15006 The Endurance wind turbine. A photo of the Atlantic Orient Corporation 15/50 wind turbine at the National Wind Technology Center. PIX07301 The Atlantic Orient Corporation 15/50 wind turbine at the National Wind Technology Center. NREL supports continued market expansion of small wind turbines by funding manufacturers through competitive solicitations (i.e., subcontracts and/or grants) to refine prototype systems leading to commercialization. Learn more about the turbine development projects below. Skystream NREL installed and tested an early prototype of this turbine at the

200

Gas turbine control and load sharing of a shipboard power system.  

E-Print Network (OSTI)

??The objective of this research is to design a controller for a gas turbine of an ElectricShipboard Power System (ESPS) and to develop a load… (more)

Fernandes, Anisha M. C., 1980-

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Development of standardized air-blown coal gasifier/gas turbine concepts for future electric power systems  

Science Conference Proceedings (OSTI)

The objective of this study is to develop standardized air blown fixed bed gasification hot gas cleanup integrated gasifier combined cycle (IGCC) systems.

Sadowski, R.S.; Brown, M.J.; Hester, J.C.; Harriz, J.T.; Ritz, G.J.

1991-02-01T23:59:59.000Z

202

Tempest gas turbine extends EGT product line  

SciTech Connect

With the introduction of the 7.8 MW (mechanical output) Tempest gas turbine, ECT has extended the company`s line of its small industrial turbines. The new Tempest machine, featuring a 7.5 MW electric output and a 33% thermal efficiency, ranks above the company`s single-shaft Typhoon gas turbine, rated 3.2 and 4.9 MW, and the 6.3 MW Tornado gas turbine. All three machines are well-suited for use in combined heat and power (CHP) plants, as demonstrated by the fact that close to 50% of the 150 Typhoon units sold are for CHP applications. This experience has induced EGT, of Lincoln, England, to announce the introduction of the new gas turbine prior to completion of the testing program. The present single-shaft machine is expected to be used mainly for industrial trial cogeneration. This market segment, covering the needs of paper mills, hospitals, chemical plants, ceramic industry, etc., is a typical local market. Cogeneration plants are engineered according to local needs and have to be assisted by local organizations. For this reason, to efficiently cover the world market, EGT has selected a number of associates that will receive from Lincoln completely engineered machine packages and will engineer the cogeneration system according to custom requirements. These partners will also assist the customer and dispose locally of the spares required for maintenance operations.

Chellini, R.

1995-07-01T23:59:59.000Z

203

NETL: Turbines - Research&Development  

NLE Websites -- All DOE Office Websites (Extended Search)

R & D R & D Turbines Research and Development NETL In-house R&D for Turbines The Combustion and Engine Dynamics Division within NETL's Office of Science and Technology provides skills, expertise, equipment, and facilities to conduct research and provides technical support for NETL product lines and programs in combustion science and technology and in the dynamics of prime movers or engines, such as gas turbines; fuel cells; internal combustion engines; or hybrid cycles that utilize fossil fuels, biomass, wastes, or other related fuel sources. Research is conducted with the primary goals of improving cycle efficiency, reducing capital cost, and improving environmental performance. Studies on supporting technologies, such as combustion instability, fuels versatility, and fluid and particle dynamics, are performed as well.

204

Gasification Evaluation of Gas Turbine Combustion  

DOE Green Energy (OSTI)

This report provides a preliminary assessment of the potential for use in gas turbines and reciprocating gas engines of gases derived from biomass by pyrolysis or partial oxidation with air. Consideration was given to the use of mixtures of these gases with natural gas as a means of improving heating value and ensuring a steady gas supply. Gas from biomass, and mixtures with natural gas, were compared with natural gas reformates from low temperature partial oxidation or steam reforming. The properties of such reformates were based on computations of gas properties using the ChemCAD computational tools and energy inputs derived from known engine parameters. In general, the biomass derived fuels compare well with reformates, so far as can be judged without engine testing. Mild reforming has potential to produce a more uniform quality of fuel gas from very variable qualities of natural gas, and could possibly be applied to gas from biomass to eliminate organic gases and condensibles other than methane.

Battelle

2003-12-30T23:59:59.000Z

205

Cost analysis of NOx control alternatives for stationary gas turbines  

SciTech Connect

The use of stationary gas turbines for power generation has been growing rapidly with continuing trends predicted well into the future. Factors that are contributing to this growth include advances in turbine technology, operating and siting flexibility and low capital cost. Restructuring of the electric utility industry will provide new opportunities for on-site generation. In a competitive market, it maybe more cost effective to install small distributed generation units (like gas turbines) within the grid rather than constructing large power plants in remote locations with extensive transmission and distribution systems. For the customer, on-site generation will provide added reliability and leverage over the cost of purchased power One of the key issues that is addressed in virtually every gas turbine application is emissions, particularly NO{sub x} emissions. Decades of research and development have significantly reduced the NO{sub x} levels emitted from gas turbines from uncontrolled levels. Emission control technologies are continuing to evolve with older technologies being gradually phased-out while new technologies are being developed and commercialized. The objective of this study is to determine and compare the cost of NO{sub x} control technologies for three size ranges of stationary gas turbines: 5 MW, 25 MW and 150 MW. The purpose of the comparison is to evaluate the cost effectiveness and impact of each control technology as a function of turbine size. The NO{sub x} control technologies evaluated in this study include: Lean premix combustion, also known as dry low NO{sub x} (DLN) combustion; Catalytic combustion; Water/steam injection; Selective catalytic reduction (SCR)--low temperature, conventional, high temperature; and SCONO{sub x}{trademark}.

Bill Major

1999-11-05T23:59:59.000Z

206

Advanced Coal-Fueled Gas Turbine Program. Final report  

SciTech Connect

The objective of the original Request for Proposal was to establish the technological bases necessary for the subsequent commercial development and deployment of advanced coal-fueled gas turbine power systems by the private sector. The offeror was to identify the specific application or applications, toward which his development efforts would be directed; define and substantiate the technical, economic, and environmental criteria for the selected application; and conduct such component design, development, integration, and tests as deemed necessary to fulfill this objective. Specifically, the offeror was to choose a system through which ingenious methods of grouping subcomponents into integrated systems accomplishes the following: (1) Preserve the inherent power density and performance advantages of gas turbine systems. (2) System must be capable of meeting or exceeding existing and expected environmental regulations for the proposed application. (3) System must offer a considerable improvement over coal-fueled systems which are commercial, have been demonstrated, or are being demonstrated. (4) System proposed must be an integrated gas turbine concept, i.e., all fuel conditioning, all expansion gas conditioning, or post-expansion gas cleaning, must be integrated into the gas turbine system.

Horner, M.W.; Ekstedt, E.E.; Gal, E.; Jackson, M.R.; Kimura, S.G.; Lavigne, R.G.; Lucas, C.; Rairden, J.R.; Sabla, P.E.; Savelli, J.F.; Slaughter, D.M.; Spiro, C.L.; Staub, F.W.

1989-02-01T23:59:59.000Z

207

Advanced coal-fueled gas turbine systems  

DOE Green Energy (OSTI)

Westinghouse's Advanced Coal-Fueled Gas Turbine System Program (DE-AC2l-86MC23167) was originally split into two major phases - a Basic Program and an Option. The Basic Program also contained two phases. The development of a 6 atm, 7 lb/s, 12 MMBtu/hr slagging combustor with an extended period of testing of the subscale combustor, was the first part of the Basic Program. In the second phase of the Basic Program, the combustor was to be operated over a 3-month period with a stationary cascade to study the effect of deposition, erosion and corrosion on combustion turbine components. The testing of the concept, in subscale, has demonstrated its ability to handle high- and low-sulfur bituminous coals, and low-sulfur subbituminous coal. Feeding the fuel in the form of PC has proven to be superior to CWM type feed. The program objectives relative to combustion efficiency, combustor exit temperature, NO[sub x] emissions, carbon burnout, and slag rejection have been met. Objectives for alkali, particulate, and SO[sub x] levels leaving the combustor were not met by the conclusion of testing at Textron. It is planned to continue this testing, to achieve all desired emission levels, as part of the W/NSP program to commercialize the slagging combustor technology.

Not Available

1992-09-01T23:59:59.000Z

208

PRESSURIZED SOLID OXIDE FUEL CELL/GAS TURBINE POWER SYSTEM  

DOE Green Energy (OSTI)

Power systems based on the simplest direct integration of a pressurized solid oxide fuel cell (SOFC) generator and a gas turbine (GT) are capable of converting natural gas fuel energy to electric power with efficiencies of approximately 60% (net AC/LHV), and more complex SOFC and gas turbine arrangements can be devised for achieving even higher efficiencies. The results of a project are discussed that focused on the development of a conceptual design for a pressurized SOFC/GT power system that was intended to generate 20 MWe with at least 70% efficiency. The power system operates baseloaded in a distributed-generation application. To achieve high efficiency, the system integrates an intercooled, recuperated, reheated gas turbine with two SOFC generator stages--one operating at high pressure, and generating power, as well as providing all heat needed by the high-pressure turbine, while the second SOFC generator operates at a lower pressure, generates power, and provides all heat for the low-pressure reheat turbine. The system cycle is described, major system components are sized, the system installed-cost is estimated, and the physical arrangement of system components is discussed. Estimates of system power output, efficiency, and emissions at the design point are also presented, and the system cost of electricity estimate is developed.

W.L. Lundberg; G.A. Israelson; R.R. Moritz (Rolls-Royce Allison); S.E. Veyo; R.A. Holmes; P.R. Zafred; J.E. King; R.E. Kothmann (Consultant)

2000-02-01T23:59:59.000Z

209

Deposition of Graded Thermal Barrier Coatings for Gas Turbine ...  

Wind Energy Industrial Technologies Advanced Materials Deposition of Graded Thermal Barrier Coatings for Gas Turbine Blades Sandia National ...

210

Microwave Brazing of Gas Turbine Components - Programmaster.org  

Science Conference Proceedings (OSTI)

Presentation Title, Microwave Brazing of Gas Turbine Components ... A Breakthrough Application of Electricity at High Temperature for Steel Production: Molten ...

211

Center for Advanced Gas Turbine Systems Research  

SciTech Connect

An unregulated conventional power station based on the Rankine Cycle typically bums pulverized coal in a boiler that exports steam for expansion through a steam turbine which ultimately drives an electric generator. The flue gases are normally cleaned of particulates by an electrostatic precipitator or bag house. A basic cycle such as this will have an efficiency of approximately 35% with 10% of the energy released through the stack and 55% to cooling water. Advanced gas turbine based combustion systems have the potential to be environmentally and commercially superior to existing conventional technology. however, to date, industry, academic, and government groups have not coordinated their effort to commercialize these technologies. The Center for Advanced Gas Turbine Systems Research will provide the medium to support effective commercialization of this technology. Several cycles or concepts for advanced gas turbine systems that could be fired on natural gas or could be adapted into coal based systems have been proposed (for examples, see Figures 4, 5, 6, and 7) (2) all with vary degrees of complexity, research needs, and system potential. Natural gas fired power systems are now available with 52% efficiency ratings; however, with a focused base technology program, it is expected that the efficiency levels can be increased to the 60% level and beyond. This increase in efficiency will significantly reduce the environmental burden and reduce the cost of power generation.

Golan, L.P.

1992-12-31T23:59:59.000Z

212

Center for Advanced Gas Turbine Systems Research  

SciTech Connect

An unregulated conventional power station based on the Rankine Cycle typically bums pulverized coal in a boiler that exports steam for expansion through a steam turbine which ultimately drives an electric generator. The flue gases are normally cleaned of particulates by an electrostatic precipitator or bag house. A basic cycle such as this will have an efficiency of approximately 35% with 10% of the energy released through the stack and 55% to cooling water. Advanced gas turbine based combustion systems have the potential to be environmentally and commercially superior to existing conventional technology. however, to date, industry, academic, and government groups have not coordinated their effort to commercialize these technologies. The Center for Advanced Gas Turbine Systems Research will provide the medium to support effective commercialization of this technology. Several cycles or concepts for advanced gas turbine systems that could be fired on natural gas or could be adapted into coal based systems have been proposed (for examples, see Figures 4, 5, 6, and 7) (2) all with vary degrees of complexity, research needs, and system potential. Natural gas fired power systems are now available with 52% efficiency ratings; however, with a focused base technology program, it is expected that the efficiency levels can be increased to the 60% level and beyond. This increase in efficiency will significantly reduce the environmental burden and reduce the cost of power generation.

Golan, L.P.

1992-01-01T23:59:59.000Z

213

Advanced coal-fueled industrial cogeneration gas turbine system  

SciTech Connect

Advances in coal-fueled gas turbine technology over the past few years, together with recent DOE-METC sponsored studies, have served to provide new optimism that the problems demonstrated in the past can be economically resolved and that the coal-fueled gas turbine can ultimately be the preferred system in appropriate market application sectors. The objective of the Solar/METC program is to prove the technical, economic, and environmental feasibility of a coal-fired gas turbine for cogeneration applications through tests of a Centaur Type H engine system operated on coal fuel throughout the engine design operating range. The five-year program consists of three phases, namely: (1) system description; (2) component development; (3) prototype system verification. A successful conclusion to the program will initiate a continuation of the commercialization plan through extended field demonstration runs.

LeCren, R.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; Wen, C.S.

1991-07-01T23:59:59.000Z

214

Airfoil for a turbine of a gas turbine engine  

SciTech Connect

An airfoil for a turbine of a gas turbine engine is provided. The airfoil comprises a main body comprising a wall structure defining an inner cavity adapted to receive a cooling air. The wall structure includes a first diffusion region and at least one first metering opening extending from the inner cavity to the first diffusion region. The wall structure further comprises at least one cooling circuit comprising a second diffusion region and at least one second metering opening extending from the first diffusion region to the second diffusion region. The at least one cooling circuit may further comprise at least one third metering opening, at least one third diffusion region and a fourth diffusion region.

Liang, George (Palm City, FL)

2010-12-21T23:59:59.000Z

215

Gas Turbines Increase the Energy Efficiency of Industrial Processes  

E-Print Network (OSTI)

It is a well known fact that the gas turbine in a combined cycle has a higher inherent Carnot efficiency than the steam cycle which has been more generally accepted by industry. Unlike steam turbines, gas turbines do not require large boiler feed water, condensate and cooling water facilities. The benefits of the high efficiency of combined cycle gas turbines can only be realized if the energy in the hot exhaust can be utilized. Data for several plants, in various stages of engineering, in which clean fuel gas for the gas turbine is produced by gasification of coal, are presented. Waste heat from the gasifier and the gas turbine exhaust is converted to high pressure steam for steam turbines. Gas turbines may find application in other industrial processes, namely in the production of ammonia, LNG, and olefins. These options are briefly discussed.

Banchik, I. N.; Bohannan, W. R.; Stork, K.; McGovern, L. J.

1981-01-01T23:59:59.000Z

216

A NEW GAS TURBINE ENGINE CONCEPT FOR ELECTRICITY  

E-Print Network (OSTI)

A NEW GAS TURBINE ENGINE CONCEPT FOR ELECTRICITY GENERATION WITH INCREASED EFFICIENCY AND POWER REPORT (FAR) A NEW GAS TURBINE ENGINE CONCEPT FOR ELECTRICITY GENERATION WITH INCREASED EFFICIENCY://www.energy.ca.gov/research/index.html. #12;Page 1 A New Gas Turbine Engine Concept For Electricity Generation With Increased

217

Working on new gas turbine cycle for heat pump drive  

E-Print Network (OSTI)

Working on new gas turbine cycle for heat pump drive FILE COPY TAP By Irwin Stambler, Field Editor DO NOT 16 0 REMOVE 16 Small recuperated gas turbine engine, design rated at 13 hp and 27% efficiency of the cycle- as a heat pump drive for commercial installations. Company is testing prototype gas turbine

Oak Ridge National Laboratory

218

Multiscale Modelling of Single Crystal Superalloys for Gas Turbine Blades  

E-Print Network (OSTI)

Multiscale Modelling of Single Crystal Superalloys for Gas Turbine Blades PROEFSCHRIFT ter Multiscale Modelling of Single Crystal Superalloys for Gas Turbine Blades / by Tiedo Tinga. ­ Eindhoven accumulation 120 5.5 Application 121 5.6 Summary and conclusions 128 6. Application to gas turbine parts 131 6

219

Statistical estimation of multiple faults in aircraft gas turbine engines  

E-Print Network (OSTI)

415 Statistical estimation of multiple faults in aircraft gas turbine engines S Sarkar, C Rao of multiple faults in aircraft gas-turbine engines, based on a statistical pattern recognition tool called commercial aircraft engine. Keywords: aircraft propulsion, gas turbine engines, multiple fault estimation

Ray, Asok

220

Symbolic identification for fault detection in aircraft gas turbine engines  

E-Print Network (OSTI)

Symbolic identification for fault detection in aircraft gas turbine engines S Chakraborty, S Sarkar and computationally inexpensive technique of component-level fault detection in aircraft gas-turbine engines identification, gas turbine engines, language-theoretic analysis 1 INTRODUCTION The propulsion system of modern

Ray, Asok

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to obtain the most current and comprehensive results.


221

GAS TURBINES AND BIODIESEL : A CLARIFICATION OF THE RELATIVE  

E-Print Network (OSTI)

1 GAS TURBINES AND BIODIESEL : A CLARIFICATION OF THE RELATIVE NOX INDICES OF FAME, GASOIL ("tallow"). A key factor for the use of biofuels in gas turbines is their Emissions Indices (NOx, CO, VOC to gas turbines is very scarce. Two recent, independent field tests carried out in Europe (RME

Paris-Sud XI, Université de

222

Solar turbines perspective on advanced fuel cell/gas turbine systems  

SciTech Connect

Solar Turbines Inc. has a vested interest in integrating gas turbines and high-temperature fuel cells(eg, solid oxide fuel cells (SOFCs)). Approach is to develop more efficient recuperated engines, which would be followed by more efficient intercooled and recuperated engines and finally by a humid air turbine cycle system. This engine system would be capable of providing efficiencies on the order of 60% with potentially low exhaust emissions. Because of possible fossil fuel shortages and severe CO{sub 2} emissions regulations, Solar adopted an alternative approach in the development of high efficiency machines; it involves combining SOFCs with recuperated gas turbines. Preliminary results show that the performance of TCPS (Tandem Cycle Unified Power System) is much better than expected, especially the efficiency. Costs are acceptable for the introductory models, and with full production, cost reductions will make the system competitive with all future energy conversion systems of the same power output. Despite the problems that must be overcome in creating a viable control system, it is believed that they are solvable. The efficiency of TCPS would be synergetic, ie, higher than either fuel cell or gas turbine alone.

White, D.J.

1996-12-31T23:59:59.000Z

223

Steam-injected gas turbines uneconomical with coal gasification equipment  

SciTech Connect

Researchers at the Electric Power Research Institute conducted a series of engineering and economic studies to assess the possibility of substituting steam-injected gas (STIG) turbines for the gas turbines currently proposed for use in British Gas Corporation (BGC)/Lurgi coal gasification-combined cycle plants. The study sought to determine whether steam-injected gas turbines and intercooled steam-injected gas turbines, as proposed by General Electric would be economically competitive with conventional gas and steam turbines when integrated with coal gasification equipment. The results are tabulated in the paper.

1986-09-01T23:59:59.000Z

224

Proceedings: 1992 EPRI Gas Turbine Procurement Seminar  

Science Conference Proceedings (OSTI)

This seminar presents information that enables utilities to implement more-cost-effective procurements for gas turbine and combined-cycle power generation equipment. A systematic approach to specification, permitting, procurement, and construction procedures can lower unit life-cycle cost.

1993-06-01T23:59:59.000Z

225

Gas Turbine Fault Diagnosis using Random Forests  

Science Conference Proceedings (OSTI)

In the present paper, Random Forests are used in a critical and at the same time non trivial problem concerning the diagnosis of Gas Turbine blading faults, portraying promising results. Random forests-based fault diagnosis is treated as a Pattern Recognition ...

Manolis Maragoudakis; Euripides Loukis; Panayotis-Prodromos Pantelides

2008-06-01T23:59:59.000Z

226

NETL: News Release - Advanced Natural Gas Turbine Hailed as Top Power  

NLE Websites -- All DOE Office Websites (Extended Search)

December 30, 2003 December 30, 2003 Advanced Natural Gas Turbine Hailed as Top Power Project of 2003 Power Engineering Cites Product of Energy Department's Advanced Turbine Systems Program WASHINGTON, DC - A power plant featuring a next-generation gas turbine developed as part of the U.S. Department of Energy's advanced turbine systems program has been selected by Power Engineering magazine as one of three "2003 Projects of the Year." Baglan Bay Power Station Baglan Bay Power Station, South Wales, U.K. Photo courtesy of GE Power Systems The Baglan Bay Power Station near Cardiff, Wales, UK reached a major milestone for the global power industry when GE Power System's H System gas turbine debuted there earlier this year. The most advanced combustion turbine in the world, the H System is the first gas turbine combined-cycle

227

Gas Turbine Upgrades for Enhancing Operational Flexibility  

Science Conference Proceedings (OSTI)

Over the last several years, gas turbines owners have had to adapt their operating profiles to adjust to an ever changing environment that has included a dramatic run-up in gas prices, the halt (or collapse) of deregulation efforts in regions of the United States, the bankruptcy or near bankruptcy of industry giants, and an overall squeeze in profitability. In recent years, these externalities have been further exacerbated by the push for renewable portfolio standards (RPS), which mandate how much energy...

2009-01-09T23:59:59.000Z

228

Flashback and blowoff characteristics of gas turbine swirl combustor.  

E-Print Network (OSTI)

??Gas turbines are extensively used in combined cycle power systems. These form about 20% of global power generating capacity, normally being fired on natural gas,… (more)

Abdulsada, Mohammed

2011-01-01T23:59:59.000Z

229

High Temperature Corrosion Failures in Gas Turbine Components  

Science Conference Proceedings (OSTI)

Two case histories of gas turbine hot-gas-path components made of cobalt and nickel superalloys are presented to discuss the mechanism of different types of ...

230

Predicting Ignition Delay for Gas Turbine Fuel Flexibility  

NLE Websites -- All DOE Office Websites (Extended Search)

Predicting Ignition Delay for Gas Turbine Fuel Flexibility 15 m * Low emission combustion systems have been carefully optimized for natural gas * Future fuel diversity (including...

231

Micro-combustor for gas turbine engine  

SciTech Connect

An improved gas turbine combustor (20) including a basket (26) and a multiplicity of micro openings (29) arrayed across an inlet wall (27) for passage of a fuel/air mixture for ignition within the combustor. The openings preferably have a diameter on the order of the quenching diameter; i.e. the port diameter for which the flame is self-extinguishing, which is a function of the fuel mixture, temperature and pressure. The basket may have a curved rectangular shape that approximates the shape of the curved rectangular shape of the intake manifolds of the turbine.

Martin, Scott M. (Oviedo, FL)

2010-11-30T23:59:59.000Z

232

Advanced Turbine Systems Program industrial system concept development  

DOE Green Energy (OSTI)

Solar approached Phase II of ATS program with the goal of 50% thermal efficiency. An intercolled and recuperated gas turbine was identified as the ultimate system to meet this goal in a commercial gas turbine environment. With commercial input from detailed market studies and DOE`s ATS program, Solar redefined the company`s proposed ATS to fit both market and sponsor (DOE) requirements. Resulting optimized recuperated gas turbine will be developed in two sizes, 5 and 15 MWe. It will show a thermal efficiency of about 43%, a 23% improvement over current industrial gas turbines. Other ATS goals--emissions, RAMD (reliability, availability, maintainability, durability), cost of power--will be met or exceeded. During FY95, advanced development of key materials, combustion and component technologies proceeded to the point of acceptance for inclusion in ATS Phase III.

Gates, S.

1995-12-31T23:59:59.000Z

233

The closed cycle gas turbine, the most efficient turbine burning any fuel  

Science Conference Proceedings (OSTI)

There are two types of gas turbines. The open cycle is very well known as, for example, the JET. The closed cycle in the U.S.A. is just starting to be well known. In Europe, the closed cycle gas turbine has been used in power plants, especially in Germany, and have been very efficient in burning coal. Concentrated in this paper is the Closed Cycle Gas Turbine (CCGT) as it is the most efficient type of turbine. There are the following sections in this paper: closed cycle gas turbine in more detail; various advantages of the CCGT; Nuclear power; and three comments.

Sawyer, R.T.

1983-12-01T23:59:59.000Z

234

Advanced Combustion Systems for Next Generation Gas Turbines  

SciTech Connect

Next generation turbine power plants will require high efficiency gas turbines with higher pressure ratios and turbine inlet temperatures than currently available. These increases in gas turbine cycle conditions will tend to increase NOx emissions. As the desire for higher efficiency drives pressure ratios and turbine inlet temperatures ever higher, gas turbines equipped with both lean premixed combustors and selective catalytic reduction after treatment eventually will be unable to meet the new emission goals of sub-3 ppm NOx. New gas turbine combustors are needed with lower emissions than the current state-of-the-art lean premixed combustors. In this program an advanced combustion system for the next generation of gas turbines is being developed with the goal of reducing combustor NOx emissions by 50% below the state-of-the-art. Dry Low NOx (DLN) technology is the current leader in NOx emission technology, guaranteeing 9 ppm NOx emissions for heavy duty F class gas turbines. This development program is directed at exploring advanced concepts which hold promise for meeting the low emissions targets. The trapped vortex combustor is an advanced concept in combustor design. It has been studied widely for aircraft engine applications because it has demonstrated the ability to maintain a stable flame over a wide range of fuel flow rates. Additionally, it has shown significantly lower NOx emission than a typical aircraft engine combustor and with low CO at the same time. The rapid CO burnout and low NOx production of this combustor made it a strong candidate for investigation. Incremental improvements to the DLN technology have not brought the dramatic improvements that are targeted in this program. A revolutionary combustor design is being explored because it captures many of the critical features needed to significantly reduce emissions. Experimental measurements of the combustor performance at atmospheric conditions were completed in the first phase of the program. Emissions measurements were obtained over a variety of operating conditions. A kinetics model is formulated to describe the emissions performance. The model is a tool for determining the conditions for low emission performance. The flow field was also modeled using CFD. A first prototype was developed for low emission performance on natural gas. The design utilized the tools anchored to the atmospheric prototype performance. The 1/6 scale combustor was designed for low emission performance in GE's FA+e gas turbine. A second prototype was developed to evaluate changes in the design approach. The prototype was developed at a 1/10 scale for low emission performance in GE's FA+e gas turbine. The performance of the first two prototypes gave a strong indication of the best design approach. Review of the emission results led to the development of a 3rd prototype to further reduce the combustor emissions. The original plan to produce a scaled-up prototype was pushed out beyond the scope of the current program. The 3rd prototype was designed at 1/10 scale and targeted further reductions in the full-speed full-load emissions.

Joel Haynes; Jonathan Janssen; Craig Russell; Marcus Huffman

2006-01-01T23:59:59.000Z

235

Advanced Turbine Systems (ATS) program conceptual design and product development  

SciTech Connect

Achieving the Advanced Turbine Systems (ATS) goals of 60% efficiency, single-digit NO{sub x}, and 10% electric power cost reduction imposes competing characteristics on the gas turbine system. Two basic technical issues arise from this. The turbine inlet temperature of the gas turbine must increase to achieve both efficiency and cost goals. However, higher temperatures move in the direction of increased NO{sub x} emission. Improved coatings and materials technologies along with creative combustor design can result in solutions to achieve the ultimate goal. GE`s view of the market, in conjunction with the industrial and utility objectives, requires the development of Advanced Gas Turbine Systems which encompass two potential products: a new aeroderivative combined-cycle system for the industrial market, and a combined-cycle system for the utility sector that is based on an advanced frame machine. The GE Advanced Gas Turbine Development program is focused on two specific products: (1) a 70 MW class industrial gas turbine based on the GE90 core technology utilizing an innovative air cooling methodology; (2) a 200 MW class utility gas turbine based on an advanced Ge heavy-duty machine utilizing advanced cooling and enhancement in component efficiency. Both of these activities required the identification and resolution of technical issues critical to achieving ATS goals. The emphasis for the industrial ATS was placed upon innovative cycle design and low emission combustion. The emphasis for the utility ATS was placed on developing a technology base for advanced turbine cooling, while utilizing demonstrated and planned improvements in low emission combustion. Significant overlap in the development programs will allow common technologies to be applied to both products. GE Power Systems is solely responsible for offering GE products for the industrial and utility markets.

1996-08-31T23:59:59.000Z

236

Combined plant having steam turbine and gas turbine connected by single shaft  

SciTech Connect

A combined plant including a gas turbine, a steam turbine and a waste heat recovery boiler using exhaust gases of the gas turbine as a heat source for producing steam serving as a drive source of the steam turbine further includes an ancillary steam source separate from and independent of the waste heat recovery boiler. At the time of startup of the plant, steam from the ancillary steam source is introduced into the steam turbine until the conditions for feeding air to the waste heat recovery boiler are set, to thereby avoid overheating of the steam turbine due to a windage loss.

Okabe, A.; Kashiwahara, K.; Urushidani, H.

1985-05-28T23:59:59.000Z

237

Development of a gravel bed combustor for a solid fueled gas turbine for the period February 1, 1989 to June 30, 1991  

SciTech Connect

Further work on a novel pressurized, downdraft combustor using aspen woodchips is reported for the period 2/89 to 6/91. The 42 cm i.d combustor was connected to a modified Allison 250-C20B gas turbine engine and operated for 250 hours. The performance of the combustor-turbine system is discussed. Deposits of ash on the turbine nozzles and rotors are identified and discussed. A dynamic simulation model for the combustor-turbine system is presented and used to investigate the control of the system. The highest net power output was 61 kW or 20% of full power; the highest turbine speed was 75% of the maximum speed; the highest mass flow was 50% of the full power flow. The stability of the combustor must be improved before higher output and longer runs can be achieved.

Ragland, K.W.; Aerts, D.J.; Palmer, C.A.

1992-06-01T23:59:59.000Z

238

Turbine cooling configuration selection and design optimization for the high-reliability gas turbine. Final report  

SciTech Connect

The potential of advanced turbine convectively air-cooled concepts for application to the Department of Energy/Electric Power Research Institute (EPRI) Advanced Liquid/Gas-Fueled Engine Program was investigated. Cooling of turbine airfoils is critical technology and significant advances in cooling technology will permit higher efficiency coal-base-fuel gas turbine energy systems. Two new airfoil construction techniques, bonded and wafer, were the principal designs considered. In the bonded construction, two airfoil sections having intricate internal cooling configurations are bonded together to form a complete blade or vane. In the wafer construction, a larger number (50 or more) of wafers having intricate cooling flow passages are bonded together to form a complete blade or vane. Of these two construction techniques, the bonded airfoil is considered to be lower in risk and closer to production readiness. Bonded airfoils are being used in aircraft engines. A variety of industrial materials were evaluated for the turbine airfoils. A columnar grain nickel alloy was selected on the basis of strength and corrosion resistance. Also, cost of electricity and reliability were considered in the final concept evaluation. The bonded airfoil design yielded a 3.5% reduction in cost-of-electricity relative to a baseline Reliable Engine design. A significant conclusion of this study was that the bonded airfoil convectively air-cooled design offers potential for growth to turbine inlet temperatures above 2600/sup 0/F with reasonable development risk.

Smith, M J; Suo, M

1981-04-01T23:59:59.000Z

239

Forecasting and strategic inventory placement for gas turbine aftermarket spares  

E-Print Network (OSTI)

This thesis addresses the problem of forecasting demand for Life Limited Parts (LLPs) in the gas turbine engine aftermarket industry. It is based on work performed at Pratt & Whitney, a major producer of turbine engines. ...

Simmons, Joshua T. (Joshua Thomas)

2007-01-01T23:59:59.000Z

240

Impingement starting and power boosting of small gas turbines  

SciTech Connect

The technology of high-pressure air or hot-gas impingement from stationary shroud supplementary nozzles onto radial outflow compressors and radial inflow turbines to permit rapid gas turbine starting or power boosting is discussed. Data are presented on the equivalent turbine component performance for convergent/divergent shroud impingement nozzles, which reveal the sensitivity of nozzle velocity coefficient with Mach number and turbine efficiency with impingement nozzle admission arc. Compressor and turbine matching is addressed in the transient turbine start mode with the possibility of operating these components in braking or reverse flow regimes when impingement flow rates exceed design.

Rodgers, C.

1985-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Overspeed protection for a gas turbine/steam turbine combined cycle  

SciTech Connect

This paper describes an improved combined cycle power plant and overspeed protection system of the type having a reheat steam turbine. It comprises: a high pressure steam turbine section with at least one control valve, and a lower pressure steam turbine section; a gas turbine including a turbine section, a combustor, a fuel valve supplying the combustor, and an air compressor with a discharge end leading to the combustor; a load riven by the reheat steam turbine and the gas turbine; the reheat steam turbine, the gas turbine and the load all having rotating members; a heat recovery steam generator heated by the gas turbine, including a high pressure steam generating section supplying steam to the high pressure steam turbine section through the control valve, and a steam reheater section receiving steam exhausted from the high pressure steam turbine section. The improvement comprises: a valveless steam conduit connected between the outlet of the steam reheater section and the inlet of the lower pressure steam turbine section, and solid couplings serving to solidify couple the rotating members together as a single rotor, the rotor having a single thrust bearing.

Moore, J.H.

1991-12-03T23:59:59.000Z

242

Commercialization of coal-fueled gas turbine systems  

SciTech Connect

The overall goal of this program is to develop and demonstrate the technological bases for economically attractive, commercial, coal- fired gas turbine systems. Objectives to accomplish this goal include these: identify candidate technical approaches to meet the challenges of using coal as a turbine fuel, screen the candidate technical approaches by testing their relative performance and evaluating their effects on the economic attractiveness of commercial coal-fueled systems, demonstrate the most promising technologies and associated components in proof-of-concept system tests leading up to commercialization. This paper presents background information on the project, and results on cogeneration systems, combined cycle power plants to include performance and cost.

Wilkes, C.; Wenglarz, R.A.

1992-12-01T23:59:59.000Z

243

Commercialization of coal-fueled gas turbine systems  

SciTech Connect

The overall goal of this program is to develop and demonstrate the technological bases for economically attractive, commercial, coal- fired gas turbine systems. Objectives to accomplish this goal include these: identify candidate technical approaches to meet the challenges of using coal as a turbine fuel, screen the candidate technical approaches by testing their relative performance and evaluating their effects on the economic attractiveness of commercial coal-fueled systems, demonstrate the most promising technologies and associated components in proof-of-concept system tests leading up to commercialization. This paper presents background information on the project, and results on cogeneration systems, combined cycle power plants to include performance and cost.

Wilkes, C.; Wenglarz, R.A.

1992-01-01T23:59:59.000Z

244

ADVANCED GAS TURBINE SYSTEMS RESEARCH PROGRAM  

SciTech Connect

The quarterly activities of the Advanced Gas Turbine Systems Research (AGTSR) program are described in this quarterly report. As this program administers research, we have included all program activity herein within the past quarter as dated. More specific research progress reports are provided weekly at the request of the AGTSR COR and are being sent to NETL As for the administration of this program, items worthy of note are presented in extended bullet format following the appropriate heading.

Lawrence P. Golan

2000-10-01T23:59:59.000Z

245

ADVANCED GAS TURBINE SYSTEMS RESEARCH PROGRAM  

SciTech Connect

The quarterly activities of the Advanced Gas Turbine Systems Research (AGTSR) program are described in this quarterly report. As this program administers research, we have included all program activity herein within the past quarter as dated. More specific research progress reports are provided weekly at the request of the AGTSR COR and are being sent to NETL As for the administration of this program, items worthy of note are presented in extended bullet format following the appropriate heading.

Lawrence P. Golan

2004-04-01T23:59:59.000Z

246

ADVANCED GAS TURBINE SYSTEMS RESEARCH PROGRAM  

SciTech Connect

The quarterly activities of the Advanced Gas Turbine Systems Research (AGTSR) program are described in this quarterly report. As this program administers research, we have included all program activity herein within the past quarter as dated. More specific research progress reports are provided weekly at the request of the AGTSR COR and are being sent to NETL. As for the administration of this program, items worthy of note are presented in extended bullet format following the appropriate heading.

Lawrence P. Golan

2001-07-01T23:59:59.000Z

247

ADVANCED GAS TURBINE SYSTEMS RESEARCH PROGRAM  

SciTech Connect

The quarterly activities of the Advanced Gas Turbine Systems Research (AGTSR) program are described in this quarterly report. As this program administers research, we have included all program activity herein within the past quarter as dated. More specific research progress reports are provided weekly at the request of the AGTSR COR and are being sent to NETL As for the administration of this program, items worthy of note are presented in extended bullet format following the appropriate heading.

Lawrence P. Golan

2002-07-01T23:59:59.000Z

248

ADVANCED GAS TURBINE SYSTEMS RESEARCH PROGRAM  

SciTech Connect

The activities of the Advanced Gas Turbine Systems Research (AGTSR) program are described in the quarterly report. As this program administers research, we have included all program activity herein within the past quarter dated. More specific research progress reports are provided weekly at the request of the AGTSR COR and are being sent to NETL. As for the administration of this program, items worthy of note are presented in extended bullet format following the appropriate heading.

Lawrence P. Golan

2000-05-01T23:59:59.000Z

249

Small Wind Turbine Testing and Applications Development  

Science Conference Proceedings (OSTI)

Small wind turbines offer a promising alternative for many remote electrical uses where there is a good wind resource. The National Wind Technology Center (NWTC) of the National Renewable Energy Laboratory helps further the role that small turbines can play in supplying remote power needs. The NWTC tests and develops new applications for small turbines. The NWTC also develops components used in conjunction with wind turbines for various applications. This paper describes wind energy research at the NWTC for applications including battery charging stations, water desalination/purification, and health clinics. Development of data acquisition systems and tests on small turbines are also described.

Corbus, D.; Baring-Gould, I.; Drouilhet, S.; Gevorgian, V.; Jimenez, T.; Newcomb, C.; Flowers, L.

1999-09-14T23:59:59.000Z

250

Comparison of intergrated coal gasification combined cycle power plants with current and advanced gas turbines  

Science Conference Proceedings (OSTI)

Two recent conceptual design studies examined ''grass roots'' integrated gasification-combined cycle (IGCC) plants for the Albany Station site of Niagara Mohawk Power Corporation. One of these studies was based on the Texaco Gasifier and the other was developed around the British Gas Co.-Lurgi slagging gasifier. Both gasifiers were operated in the ''oxygen-blown'' mode, producing medium Btu fuel gas. The studies also evaluated plant performance with both current and advanced gas turbines. Coalto-busbar efficiencies of approximately 35 percent were calculated for Texaco IGCC plants using current technology gas turbines. Efficiencies of approximately 39 percent were obtained for the same plant when using advanced technology gas turbines.

Banda, B.M.; Evans, T.F.; McCone, A.I.; Westisik, J.H.

1984-08-01T23:59:59.000Z

251

Advanced Turbine Systems Program: Conceptual design and product development  

SciTech Connect

Objective is to provide the conceptual design and product development plant for an ultra high efficiency, environmentally superior, and cost competitive industrial gas turbine system to be commercialized by the year 2000 (secondary objective is to begin early development of technologies critical to the success of ATS). This report addresses the remaining 7 of the 9 subtasks in Task 8, Design and Test of Critical Components: catalytic combustion, recuperator, high- temperature turbine disc, advanced control system, and ceramic materials.

1996-12-31T23:59:59.000Z

252

Gas turbine effects on integrated-gasification-combined-cycle power plant operations  

SciTech Connect

This study used detailed thermodynamic modeling procedures to assess the influence of different gas turbine characteristics and steam cycle conditions on the design and off-design performance of integrated gasification-combined-cycle (IGCC) power plants. IGCC plant simulation models for a base case plant with Texaco gasifiers and both radiant and convective syngas coolers were developed, and three different types of gas turbines were evaluated as well as non-reheat and reheat steam systems. Results indicated that improving the gas turbine heat rate significantly improves the heat rate of the IGCC power plant. In addition results indicated that using a reheat steam system with current gas turbines improves IGCC performance, though as gas turbine efficiency increases, the impact of using a reheat steam system decreases. Increasing gas turbine temperatures from 1985{degree}F to 2500{degree}F was also found to have the potential to reduce overall IGCC system heat rates by approximately 700 BTU/kWh. The methodologies and models developed for this work are extremely useful tools for investigating the impact of specific gas turbine and steam cycle conditions on the overall performance of IGCC power plants. Moreover, they can assist utilities during the preliminary engineering phase of an IGCC project in evaluating the cost effectiveness of using specific gas turbines and steam cycles in the overall plant design. 45 refs., 20 figs., 10 tabs.

Eustis, F.H. (Stanford Univ., CA (USA). High Temperature Gasdynamics Lab.)

1990-03-01T23:59:59.000Z

253

LOW NOx EMISSIONS IN A FUEL FLEXIBLE GAS TURBINE  

SciTech Connect

In alignment with Vision 21 goals, a study is presented here on the technical and economic potential for developing a gas turbine combustor that is capable of generating less that 2 ppm NOx emissions, firing on either coal synthesis gas or natural gas, and being implemented on new and existing systems. The proposed solution involves controlling the quantity of H2 contained in the fuel. The presence of H2 leads to increased flame stability such that the combustor can be operated at lower temperatures and produce less thermal NOx. Coal gas composition would be modified using a water gas shift converter, and natural gas units would implement a catalytic partial oxidation (CPOX) reactor to convert part of the natural gas feed to a syngas before fed back into the combustor. While both systems demonstrated technical merit, the economics involved in implementing such a system are marginal at best. Therefore, Praxair has decided not to pursue the technology any further at this time.

Raymond Drnevich; James Meagher; Vasilis Papavassiliou; Troy Raybold; Peter Stuttaford; Leonard Switzer; Lee Rosen

2004-08-01T23:59:59.000Z

254

An Evaluation of Gas Turbines for APFBC Power Plants  

NLE Websites -- All DOE Office Websites (Extended Search)

EVALUATION OF GAS TURBINES FOR APFBC POWER PLANTS EVALUATION OF GAS TURBINES FOR APFBC POWER PLANTS Donald L. Bonk U.S. DOE National Energy Technology Laboratory Morgantown, West Virginia eMail: dbonk@netl.doe.gov phone: (304) 285-4889 Richard E. Weinstein, P.E. Parsons Infrastructure & Technology Group Inc. Reading, Pennsylvania eMail: richard.e.weinstein@parsons.com phone: (610) 855-2699 Abstract This paper describes a concept screening evaluation of gas turbines from several manufacturers that assessed the merits of their respective gas turbines for advanced circulating pressurized fluidized bed combustion combined cycle (APFBC) applications. The following gas turbines were evaluated for the modifications expected for APFBC service: 2 x Rolls-Royce Industrial Trent aeroderivative gas turbine configurations; a 3 x Pratt & Whitney Turbo Power FT8 Twin-

255

How Gas Turbine Power Plants Work | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

How Gas Turbine Power Plants Work How Gas Turbine Power Plants Work How Gas Turbine Power Plants Work The combustion (gas) turbines being installed in many of today's natural-gas-fueled power plants are complex machines, but they basically involve three main sections: The compressor, which draws air into the engine, pressurizes it, and feeds it to the combustion chamber at speeds of hundreds of miles per hour. The combustion system, typically made up of a ring of fuel injectors that inject a steady stream of fuel into combustion chambers where it mixes with the air. The mixture is burned at temperatures of more than 2000 degrees F. The combustion produces a high temperature, high pressure gas stream that enters and expands through the turbine section. The turbine is an intricate array of alternate stationary and

256

Preliminary gas turbine combustor design using a network approach  

SciTech Connect

The preliminary design process of a gas turbine combustor often involves the use of cumbersome, geometry restrictive semi-empirical models. The objective of this analysis is the development of a versatile design tool for gas turbine combustors, able to model all conceivable combustor types. A network approach is developed that divides the flow into a number of independent semi-empirical subflows. A pressure-correction methodology solves the continuity equation and a pressure-drop/flow rate relationship. The development of a full conjugate heat transfer model allows the calculation of flame tube heat loss in the presence of cooling films, annulus heat addition, and flame tube feature heat pick-up. A constrained equilibrium calculation, incorporating mixing and recirculation models, simulates combustion processes. Comparison of airflow results to a well-validated combustor design code showed close agreement. The versatility of the network solver is illustrated with comparisons to experimental data from a reverse flow combustor.

Stuttaford, P.J.; Rubini, P.A. [Cranfield Univ. (United Kingdom). School of Mechanical Engineering

1997-07-01T23:59:59.000Z

257

Collaborative Advanced Gas Turbine Program: Phase 1. Final report  

SciTech Connect

The Collaborative Advanced Gas Turbine (CAGT) Program is an advanced gas turbine research and development program whose goal is to accelerate the commercial availability, to within the turn of the century, of high efficiency aeroderivative gas turbines for electric power generating applications. In the first project phase, research was conducted to prove or disprove the research hypothesis that advanced aeroderivative gas turbine systems can provide a promising technology alternative, offering high efficiency and good environmental performance characteristics in modular sizes, for utility applications. This $5 million, Phase 1 research effort reflects the collaborative efforts of a broad and international coalition of industries and organizations, both public and private, that have pooled their resources to assist in this research. Included in this coalition are: electric and gas utilities, the Electric Power Research Institute, the Gas Research Institute and the principal aircraft engine manufacturers. Additionally, the US Department of Energy (DOE) and the California Energy Commission have interacted with the CAGT on both technical and executive levels as observers and sources of funding. The three aircraft engine manufacturer-led research teams participating in this research include: Rolls-Royce, Inc., and Bechtel; the Turbo Power and Marine Division of United Technologies and Fluor Daniel; and General Electric Power Generation, Stewart and Stevenson, and Bechtel. Each team has investigated advanced electric power generating systems based on their high-thrust (60,000 to 100,000 pounds) aircraft engines. The ultimate goal of the CAGT program is that the community of stakeholders in the growing market for natural-gas-fueled, electric power generation can collectively provide the right combination of market-pull and technology-push to substantially accelerate the commercialization of advanced, high efficiency aeroderivative technologies.

Hollenbacher, R.; Kesser, K.; Beishon, D.

1994-12-01T23:59:59.000Z

258

Reliable Gas Turbine Output: Attaining Temperature Independent Performance  

E-Print Network (OSTI)

Improvements in gas turbine efficiency, coupled with dropping gas prices, has made gas turbines a popular choice of utilities to supply peaking as well as base load power in the form of combined cycle power plants. Today, because of the gas turbine's compactness, low maintenance, and high levels of availability, it is the major option for future power generation. One inherent disadvantage of gas turbines is the degradation of output as the ambient air temperature increases. This reduction in output during times of peak load create a reliability concern as more gas turbines are added to the electric system. A 10% reduction in gas turbine output, when it comprises only 10% of the electric system, does not cause reliability concerns. A 10% reduction in gas turbine output, when it comprises 50% of the electric system, could create reliability and operational problems. This paper explores the potential for maintaining constant, reliable outputs from gas turbines by cooling ambient air temperatures before the air is used in the compressor section of the gas turbine.

Neeley, J. E.; Patton, S.; Holder, F.

1992-04-01T23:59:59.000Z

259

Advanced turbine systems program conceptual design and product development. Quarterly report, February, 1996--April, 1996  

SciTech Connect

This paper describes the design and testing of critical gas turbine components. Development of catalytic combustors and diagnostic equipment is included.

1996-07-08T23:59:59.000Z

260

NEXT GENERATION GAS TURBINE (NGGT) SYSTEMS STUDY  

SciTech Connect

Building upon the 1999 AD Little Study, an expanded market analysis was performed by GE Power Systems in 2001 to quantify the potential demand for an NGGT product. This analysis concluded that improvements to the US energy situation might be best served in the near/mid term (2002-2009) by a ''Technology-Focused'' program rather than a specific ''Product-Focused'' program. Within this new program focus, GEPS performed a parametric screening study of options in the three broad candidate categories of gas turbines: aero-derivative, heavy duty, and a potential hybrid combining components of the other two categories. GEPS's goal was to determine the best candidate systems that could achieve the DOE PRDA expectations and GEPS's internal design criteria in the period specified for initial product introduction, circa 2005. Performance feasibility studies were conducted on candidate systems selected in the screening task, and critical technology areas were identified where further development would be required to meet the program goals. DOE PRDA operating parameters were found to be achievable by 2005 through evolutionary technology. As a result, the study was re-directed toward technology enhancements for interim product introductions and advanced/revolutionary technology for potential NGGT product configurations. Candidate technologies were identified, both evolutionary and revolutionary, with a potential for possible development products via growth step improvements. Benefits were analyzed from two perspectives: (1) What would be the attributes of the top candidate system assuming the relevant technologies were developed and available for an NGGT market opportunity in 2009/2010; and (2) What would be the expected level of public benefit, assuming relevant technologies were incorporated into existing new and current field products as they became available. Candidate systems incorporating these technologies were assessed as to how they could serve multiple applications, both in terms of incorporation of technology into current products, as well as to an NGGT product. In summary, potential program costs are shown for development of the candidate systems along with the importance of future DOE enabling participation. Three main conclusions have been established via this study: (1) Rapid recent changes within the power generation regulatory environment and the resulting ''bubble'' of gas turbine orders has altered the timing and relative significance associated with the conclusions of the ADL study upon which the original DOE NGGT solicitation was based. (2) Assuming that the relevant technologies were developed and available for an NGGT market opportunity circa 2010, the top candidate system that meets or exceeds the DOE PRDA requirements was determined to be a hybrid aero-derivative/heavy duty concept. (3) An investment by DOE of approximately $23MM/year to develop NGGT technologies near/mid term for validation and migration into a reasonable fraction of the installed base of GE F-class products could be leveraged into $1.2B Public Benefit, with greatest benefits resulting from RAM improvements. In addition to the monetary Public Benefit, there is also significant benefit in terms of reduced energy consumption, and reduced power plant land usage.

Unknown

2001-12-05T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Multivariable model predictive control for a gas turbine power plant  

Science Conference Proceedings (OSTI)

In this brief, constrained multi variable model predictive control (MPC) strategy is investigated for a GE9001E gas turbine power plant. So the rotor speed and exhaust gas temperature are controlled manipulating the fuel command and compressor inlet ... Keywords: ARX, gas turbine, identification, modeling, multivariable control, power plant, predictive control

Hadi Ghorbani; Ali Ghaffari; Mehdi Rahnama

2008-05-01T23:59:59.000Z

262

Flexible Mid-Sized Gas Turbine: Preliminary Market Analysis  

Science Conference Proceedings (OSTI)

This study estimates the sales potential of Flexible Mid-Sized Gas Turbine (FMGT) plants for the U.S. market over the period 2000-2015.

1998-06-08T23:59:59.000Z

263

Mechanical support of a ceramic gas turbine vane ring - Energy ...  

Wind Energy; Partners (27) Visual Patent Search; Success Stories; News; Events; Mechanical support of a ceramic gas turbine vane ring United States ...

264

Hardware Simulation of Fuel Cell / Gas Turbine Hybrids .  

E-Print Network (OSTI)

??Hybrid solid oxide fuel cell / gas turbine (SOFC/GT) systems offer high efficiency power generation, but face numerous integration and operability challenges. This dissertation addresses… (more)

Smith, Thomas Paul

2007-01-01T23:59:59.000Z

265

Gas turbine combustion modeling for a Parametric Emissions Monitoring System.  

E-Print Network (OSTI)

??Oxides of nitrogen (NOx), carbon monoxide (CO) and other combustion by-products of gas turbines have long been identified as harmful atmospheric pollutants to the environment… (more)

Honegger, Ueli

2007-01-01T23:59:59.000Z

266

Probabilistic Assessment of Failure Risk in Gas Turbine Discs.  

E-Print Network (OSTI)

?? Gas turbine discs are heavily loaded due to centrifugal and thermal loads and are therefore designed for a service lifetime specified in hours and… (more)

Forsberg, Fredrik

2008-01-01T23:59:59.000Z

267

DISSERTATION: Mechanical Behavior of Gas Turbine Coatings - TMS  

Science Conference Proceedings (OSTI)

Oct 11, 2007 ... ABSTRACT: Coatings are frequently applied on gas turbine components in order to restrict surface degradation such as corrosion and ...

268

Gas Turbine Fired Heater Integration: Achieve Significant Energy Savings  

E-Print Network (OSTI)

Faster payout will result if gas turbine exhaust is used as combustion air for fired heaters. Here are economic examples and system design considerations.

Iaquaniello, G.; Pietrogrande, P.

1985-05-01T23:59:59.000Z

269

Powder Metallurgy Products for Advanced Gas Turbine Applications  

Science Conference Proceedings (OSTI)

ties for gas turbine a.pplications. At Avco Lycoming, powder metallurgy activity has focused upon a series of high strength nickel base superalloys. These alloys  ...

270

WEB RESOURCE: Platinum Plating of Gas Turbine Components  

Science Conference Proceedings (OSTI)

Feb 25, 2008 ... This web resource describes the process by which gas turbine components are coated at SIFCO's Carrigtwohill plant and the effects of platinum ...

271

Pre-Sintered Preforms - Applications for Gas Turbine Components  

Science Conference Proceedings (OSTI)

Presentation Title, Pre-Sintered Preforms - Applications for Gas Turbine Components. Author(s), Jeremy M Boyle. On-Site Speaker (Planned), Jeremy M Boyle.

272

Integrated Computational Materials Engineering from a Gas Turbine ...  

Science Conference Proceedings (OSTI)

Presentation Title, Integrated Computational Materials Engineering from a Gas Turbine Engine Perspective. Author(s), John F Matlik, Ann Bolcavage. On-Site ...

273

ARTICLE: Abradable Coatings Increase Gas Turbine Engine Efficiency  

Science Conference Proceedings (OSTI)

Oct 11, 2007 ... Topic Title: ARTICLE: Abradable Coatings Increase Gas Turbine Engine Efficiency Topic Summary: F. Ghasripoor et. al. article from Materials ...

274

Faradayic EPD of YSZ TBCs for Gas Turbine Engines  

Science Conference Proceedings (OSTI)

Presentation Title, Faradayic EPD of YSZ TBCs for Gas Turbine Engines. Author( s), Heather McCrabb, Joseph Kell. On-Site Speaker (Planned), Joseph Kell.

275

Gas Turbines of the Future: Hydrogen and Oxy-Combustion ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Materials issues related to higher efficiency power plants, like hydrogen or oxy-fuel fired gas turbines, require materials with higher temperature  ...

276

COMPRESSIVE STRESS SYSTEM FOR A GAS TURBINE ENGINE - Energy ...  

The present application provides a compressive stress system for a gas turbine engine. The compressive stress system may include a first bucket ...

277

An artificial neural network system for diagnosing gas turbine engine fuel faults  

DOE Green Energy (OSTI)

The US Army Ordnance Center & School and Pacific Northwest Laboratories are developing a turbine engine diagnostic system for the M1A1 Abrams tank. This system employs Artificial Neural Network (AN) technology to perform diagnosis and prognosis of the tank`s AGT-1500 gas turbine engine. This paper describes the design and prototype development of the ANN component of the diagnostic system, which we refer to as ``TEDANN`` for Turbine Engine Diagnostic Artificial Neural Networks.

Illi, O.J. Jr. [Army Ordnance Center and School, Aberdeen Proving Ground, MD (United States). Knowledge Engineering Group (KEG); Greitzer, F.L.; Kangas, L.J. [Pacific Northwest Lab., Richland, WA (United States); Reeve, T. [Expert Solutions, Stratford, CT (United States)

1994-04-01T23:59:59.000Z

278

Overspeed protection method for a gas turbine/steam turbine combined cycle  

SciTech Connect

This patent describes a method for achieving overspeed protection in a combined cycle gas and steam turbine power plant. It comprises solidly coupling together to rotate at all times as a single rotor unit, including during sudden loss of load occurrences, the rotating members of a gas turbine with its associated combustor and air compressor, a high pressure steam turbine at least one lower pressure stream turbine and an electrical generator; transferring heat from the gas turbine exhaust to steam exhausted from the high pressure steam turbine in a steam reheater before it is input to the at least one lower pressure steam turbine; connecting an output of the steam reheater with an input of the lower pressure steam turbine via a valveless steam conduit; and using a single overspeed control to detect a sudden loss of load occurrence and, in response, simultaneously reducing steam input to the high pressure steam turbine and reducing fuel input to the gas turbine combustor while permitting residual reheater output to continue to expand freely through the at least one lower pressure steam turbine.

Moore, J.H.

1991-08-27T23:59:59.000Z

279

Needs assessment for manufacturing ceramic gas turbine components  

SciTech Connect

An assessment of needs for the manufacturing of ceramic gas turbine components was undertaken to provide a technical basis for planning R&D activities to support DOE`s gas turbine programs. The manufacturing processes for ceramic turbine engine components were examined from design through final inspection and testing. The following technology needs were identified: Concurrent engineering early in the design phase to develop ceramic components that are more readily manufacturable. Additional effort in determining the boundaries of acceptable design dimensions and tolerances through experimental and/or analytical means. Provision, by the designer, of a CAD based model of the component early in the design cycle. Standardization in the way turbine components are dimensioned and toleranced, and in the way component datum features are defined. Rapid means of fabricating hard tooling, including intelligent systems for design of tooling and rapid prototyping of tooling. Determination of process capabilities by manufacturing significant numbers of parts. Development of more robust ceramic manufacturing processes which are tolerant of process variations. Development of intelligent processing as a means of controlling yield and quality of components. Development of computer models of key manufacturing steps, such as green forming to reduce the number of iterations required to manufacture intolerance components. Development of creep feed or other low-damage precision grinding for finish machining of components. Improved means of fixturing components for finish machining. Fewer and lower-cost final inspection requirements. Standard procedures, including consistent terminology and analytical software for dimensional inspection of components. Uniform data requirements from the US turbine engine companies. An agreed-upon system of naming ceramic materials and updating the name when changes have been made.

Johnson, D.R.; McSpadden, S.B.; Morris, T.O.; Pasto, A.E.

1995-11-01T23:59:59.000Z

280

Time Accurate Unsteady Simulation of the Stall Inception Process in the Compression System of a US Army Helicopter Gas Turbine Engine  

Science Conference Proceedings (OSTI)

The operational envelope of gas turbine engines such as those employed in the Army Blackhawk helicopter is constrained by the stability limit of the compression system. Technologies developed to improve the stable operating range of gas turbine compressors ...

Michael D. Hathaway; Greg Herrick; Jenping Chen; Robert Webster

2004-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Energy Saving in Ammonia Plant by Using Gas Turbine  

E-Print Network (OSTI)

An ammonia plant, in which the IHI-SULZER Type 57 Gas Turbine is integrated in order to achieve energy saving, has started successful operation. Tile exhaust gas of the gas turbine has thermal energy of relatively high temperature, therefore, if the thermal energy of this gas is utilized effectively, the gas turbine could be superior to effectively, the gas turbine could be superior to other thermal engines in view of total energy effectiveness. As a typical example of the above use of the gas turbine, its application in the ammonia plant has now been realized. In addition to the use of the gas turbine as the driver for the process air compressor which was driven by the steam turbine, its exhaust gas is introduced to the ammonia reformer. It leads to the saving of the reformer fuel, and subsequently the energy saving of the reformer section in the plant of about 20% has been achieved. This paper describes the outline of the project, energy saving effectiveness and investigation for the application of the gas turbine in the ammonia plant.

Uji, S.; Ikeda, M.

1981-01-01T23:59:59.000Z

282

Small-scale AFBC hot air gas turbine power cycle  

SciTech Connect

The Energy and Environmental Research Corporation (EER), the Ohio Agricultural Research and Development Center (OARDC), the Will-Burt Company (W-B) and the US Department of Energy (DOE) have successfully developed and completed pilot plant tests on a small scale atmospheric fluidized bed combustion (AFBC) system. This system can be used to generate electricity, and/or hot water, steam. Following successful pilot plant operation, commercial demonstration will take place at Cedar Lane Farms (CLF), near Wooster, Ohio. The system demonstration will be completed by the end of 1995. The project is being funded through a cooperative effort between the DOE, EER, W-B, OARDC, CLF and the Ohio Coal Development Office (OCDO). The small scale AFBC, has no internal heat transfer surfaces in the fluid bed proper. Combining the combustor with a hot air gas turbine (HAGT) for electrical power generation, can give a relatively high overall system thermal efficiency. Using a novel method of recovering waste heat from the gas turbine, a gross heat rate of 13,500 Btu/kWhr ({approximately}25% efficiency) can be achieved for a small 1.5 MW{sub e} plant. A low technology industrial recuperation type gas turbine is used that operates with an inlet blade temperature of 1,450 F and a compression ratio of 3.9:1. The AFBC-HAGT technology can be used to generate power for remote rural communities to replace diesel generators, or can be used for small industrial co-generation applications.

Ashworth, R.A. [Energy and Environmental Research Corp., Orrville, OH (United States); Keener, H.M. [Ohio State Univ., Wooster, OH (United States). Ohio Agricultural Research and Development Center; Hall, A.W. [USDOE Morgantown Energy Technology Center, WV (United States)

1995-12-31T23:59:59.000Z

283

Fuel Effects on a Low-Swirl Injector for Lean Premixed Gas Turbines  

E-Print Network (OSTI)

of Engineering for Gas Turbines and Power-Transactions ofInjector for Lean Premixed Gas Turbines D. Littlejohn and R.11. IC ENGINE AND GAS TURBINE COMBUSTION SHORT TITLE: Fuel

Littlejohn, David

2008-01-01T23:59:59.000Z

284

Prime Movers of Globalization: The History and Impact of Diesel Engines and Gas Turbines  

E-Print Network (OSTI)

of Diesel Engines and Gas Turbines By Vaclav Smil Reviewedof Diesel Engines and Gas Turbines. Cambridge, MA: The MITin the 1890s and the gas turbine invented by Frank Whittle

Anderson, Byron P.

2011-01-01T23:59:59.000Z

285

Development of standardized air-blown coal gasifier/gas turbine concepts for future electric power systems. Volume 3, Appendix B: NO{sub x} and alkali vapor control strategies: Final report  

SciTech Connect

CRS Sirrine (CRSS) is evaluating a novel IGCC process in which gases exiting the gasifier are burned in a gas turbine combustion system. The turbine exhaust gas is used to generate additional power in a conventional steam generator. This results in a significant increase in efficiency. However, the IGCC process requires development of novel approaches to control SO{sub 2} and NO{sub x} emissions and alkali vapors which can damage downstream turbine components. Ammonia is produced from the reaction of coal-bound nitrogen with steam in the reducing zone of any fixed bed coal gasifier. This ammonia can be partially oxidized to NO{sub x} when the product gas is oxidized in a gas turbine combustor. Alkali metals vaporize in the high-temperature combustion zone of the gasifier and laser condense on the surface of small char or ash particles or on cooled metal surfaces. It these alkali-coated materials reach the gas turbine combustor, the alkali will revaporize condense on turbine blades and cause rapid high temperature corrosion. Efficiency reduction will result. PSI Technology Company (PSIT) was contracted by CRSS to evaluate and recommend solutions for NO{sub x} emissions and for alkali metals deposition. Various methods for NO{sub x} emission control and the potential process and economic impacts were evaluated. This included estimates of process performance, heat and mass balances around the combustion and heat transfer units and a preliminary economic evaluation. The potential for alkali metal vaporization and condensation at various points in the system was also estimated. Several control processes and evaluated, including an order of magnitude cost for the control process.

1990-07-01T23:59:59.000Z

286

Evaluation of manure as a feedstock for gas turbines  

DOE Green Energy (OSTI)

A preliminary program on evaluation of feedlot manure as a feed stock for gas turbines has been completed. It was determined that manure can be pulverized and fed into a gas turbine combustion system with the manure burning in much the same manner as a liquid or gaseous fuel. Ash and dirt in the manure did not appear to have a significant effect on combustion and were effectively removed by the cyclone filters. The exhaust gases varied from clear to a blue haze. Severe problems were encountered with slagging of the hot refractory walls of the combustor. Development of a suitable combustor will be required before a commercial size system can be designed. 10 refs., 10 figs., 3 tabs.

Hamrick, J.T.

1988-05-01T23:59:59.000Z

287

Design of high-efficiency turbomachinery and gas turbines  

SciTech Connect

The present treatment of pump, compressor, and turbine turbomachinery emphasizes thermodynamics, design methods, and the use that can be made of relatively simple rules for the choosing of cycle types, vector diagrams, blading types, heat exchanger configurations, etc. Gas dynamics are treated to the virtual exclusion of mechanical design considerations, although a brief historical account of the family of turbomachine systems notes gradual structural as well as thermodynamic and gas dynamic refinements. The complete systems described and analyzed include aircraft, marine, and electrical power generation gas turbines, steam turbines, and hydraulic pumps and turbines. Both axial and centrifugal flow turbomachine types are considered. 112 references.

Wilson, D.G.

1984-01-01T23:59:59.000Z

288

ALCF Research Aimed at Safer, Cleaner Combustion for Gas Turbines | Argonne  

NLE Websites -- All DOE Office Websites (Extended Search)

Research Aimed at Safer, Cleaner Combustion for Gas Turbines Research Aimed at Safer, Cleaner Combustion for Gas Turbines December 3, 2013 Printer-friendly version Researchers from the Swiss Federal Institute of Technology (ETHZ) and the Argonne Leadership Computing Facility (ALCF) are using supercomputers to advance the development of safer and cleaner gas turbine engines by studying the operating conditions that can lead to a potentially dangerous phenomenon called autoignition. This phenomenon, which involves the spontaneous ignition of a combustible mixture without an external ignition source, can result in a premature combustion event, called flashback, that causes significant damage to the gas turbine. Understanding autoignition is critical to the design of turbines that operate with novel combustion strategies, such as lean

289

External combustor for gas turbine engine  

DOE Patents (OSTI)

An external combustor for a gas turbine engine has a cyclonic combustion chamber into which combustible gas with entrained solids is introduced through an inlet port in a primary spiral swirl. A metal draft sleeve for conducting a hot gas discharge stream from the cyclonic combustion chamber is mounted on a circular end wall of the latter adjacent the combustible gas inlet. The draft sleeve is mounted concentrically in a cylindrical passage and cooperates with the passage in defining an annulus around the draft sleeve which is open to the cyclonic combustion chamber and which is connected to a source of secondary air. Secondary air issues from the annulus into the cyclonic combustion chamber at a velocity of three to five times the velocity of the combustible gas at the inlet port. The secondary air defines a hollow cylindrical extension of the draft sleeve and persists in the cyclonic combustion chamber a distance of about three to five times the diameter of the draft sleeve. The hollow cylindrical extension shields the drive sleeve from the inlet port to prevent discharge of combustible gas through the draft sleeve.

Santanam, Chandran B. (Indianapolis, IN); Thomas, William H. (Indianapolis, IN); DeJulio, Emil R. (Columbus, IN)

1991-01-01T23:59:59.000Z

290

Virable speed gas-turbine drivers gain in compressor use  

SciTech Connect

Variable-speed drivers, such as gas turbines, for reciprocating compressors enhance overall energy savings and a compressor's operational flexibility. This paper presents the main design aspects of gas-turbine systems and some examples from a recent installation in Germany.

Giacomelli, E.; Bernardini, F. (Nuovo Pignone, Florence (Italy)); Andree, H. (Pipeline Engineering GmbH, Essen (DE))

1990-11-19T23:59:59.000Z

291

Fog Cooling, Wet Compression and Droplet Dynamics In Gas Turbine Compressors.  

E-Print Network (OSTI)

??During hot days, gas turbine power output deteriorates significantly. Among various means to augment gas turbine output, inlet air fog cooling is considered as the… (more)

Khan, Jobaidur Rahman

2009-01-01T23:59:59.000Z

292

A Parametric Physics Based Creep Life Prediction Approach to Gas Turbine Blade Conceptual Design .  

E-Print Network (OSTI)

??The required useful service lives of gas turbine components and parts are naturally one of the major design constraints limiting the gas turbine design space.… (more)

Smith, Marcus Edward Brockbank

2008-01-01T23:59:59.000Z

293

Experimental study of rotordynamic coefficients of squeeze film dampers of an aircraft gas turbine engine.  

E-Print Network (OSTI)

??The rotordynamic coefficients of squeeze film dampers of an aircraft gas turbine engine were investigated experimentally. Rotordynamic model(XLROTOR) for Gas Generator and Power Turbine were… (more)

Na, Uhn Joo

2012-01-01T23:59:59.000Z

294

Alternative Liquid Fuel Effects on Cooled Silicon Nitride Marine Gas Turbine Airfoils  

Science Conference Proceedings (OSTI)

With prior support from the Office of Naval Research, DARPA, and U.S. Department of Energy, United Technologies is developing and engine environment testing what we believe to be the first internally cooled silicon nitride ceramic turbine vane in the United States. The vanes are being developed for the FT8, an aeroderivative stationary/marine gas turbine. The current effort resulted in further manufacturing and development and prototyping by two U.S. based gas turbine grade silicon nitride component manufacturers, preliminary development of both alumina, and YTRIA based environmental barrier coatings (EBC's) and testing or ceramic vanes with an EBC coating.

Holowczak, J.

2002-03-01T23:59:59.000Z

295

Proven reliability of the gas-turbine engine. BIPS Phase 1  

SciTech Connect

The background, capabilities and experience of the Garrett Corp. in designing, developing, manufacturing and testing gas turbines and related systems are described, and the requirements for and components of the Brayton Isotope Power System (BIPS) for space vehicles are outlined. Data on the compressor and turbine, alternator, bearings, recuperator, radiator, heat source assembly, and control systems are presented. (LCL)

1976-11-01T23:59:59.000Z

296

NETL: News Release - Innovations in Gas Turbines to be Pursued in Two New  

NLE Websites -- All DOE Office Websites (Extended Search)

4, 2000 4, 2000 Innovations in Gas Turbines to be Pursued In Two New Energy Department Projects GE to Develop Cleaner Combustors, "Smart" Sensors NISKAYUNA, NY - With the natural gas turbine fast becoming the workhorse for new power generating plants in the United States, the U.S. Department of Energy is preparing to award two new research contracts that could help improve the environmental performance and efficiencies of tomorrow's high-efficiency turbines. As part of a wide-ranging competition, the Department's National Energy Technology Laboratory has selected General Electric Co., Niskayuna, NY, for projects to develop a new gas turbine combustion system and a "Smart Power Turbine" sensor-and control system. A Cleaner Burning Combustor

297

Demonstration Development Project - Combustion Turbine Low Power Turndown Technologies: A Review of Current and Emerging Technologies for Combined Cycle Gas Turbines  

Science Conference Proceedings (OSTI)

EPRI has established a Demonstration Development Program that supports projects that evaluate developing technologies which will potentially decrease cost and increase performance of power generating assets.  This report provides a review of recent developments in combined cycle technologies that provide improved performance in the areas of response time (start-up and ramp time), power turndown while maintaining low emissions, and fuel flexibility.A review of technologies either ...

2012-11-30T23:59:59.000Z

298

Single pressure steam bottoming cycle for gas turbines combined cycle  

SciTech Connect

This patent describes a process for recapturing waste heat from the exhaust of a gas turbine to drive a high pressure-high temperature steam turbine and a low pressure steam turbine. It comprises: delivering the exhaust of the gas turbine to the hot side of an economizer-reheater apparatus; delivering a heated stream of feedwater and recycled condensate through the cold side of the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus to elevate the temperature below the pinch point of the boiler; delivering the discharge from the high pressure-high temperature steam turbine through the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus; driving the high pressure-high temperature steam turbine with the discharge stream of feedwater and recycled condensate which is heated to a temperature below the pinch point of the boiler by the economizer-reheater apparatus; and driving the low pressure steam turbine with the discharged stream of the high pressure-high temperature steam turbine reheated below the pinch point of the boiler by the economizer-reheater apparatus.

Zervos, N.

1990-01-30T23:59:59.000Z

299

Design and component integration of a T63-A-700 gas turbine engine test facility ; .  

E-Print Network (OSTI)

??A gas turbine engine test cell was developed integrating an Allison T63-A-700 helicopter engine with a superflow water brake dynamometer power absorber. Design specifications were… (more)

Eckerle, Brian P.

1995-01-01T23:59:59.000Z

300

Analysis and numerical optimization of gas turbine space power systems with nuclear fission reactor heat sources  

Science Conference Proceedings (OSTI)

A new three objective optimization technique is developed and applied to find the operating conditions for fission reactor heated Closed Cycle Gas Turbine (CCGT) space power systems at which maximum efficiency, minimum radiator area, and minimum total ...

Albert J. Juhasz / Jerzy Sawicki

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Study on flow parameters optimisation for marine gas turbine intercooler system based on simulation experiment  

Science Conference Proceedings (OSTI)

The thermodynamic calculation software of Intercooled-Cycle gas turbine was developed to observe the impacts that the environmental parameters and cold degrees of intercooler produce quantitatively on this marine engine performance. And then, the mathematical ...

Yu-long Ying; Yun-peng Cao; Shu-ying Li; Zhi-tao Wang

2013-06-01T23:59:59.000Z

302

Understanding and Control of Combustion Dynamics in Gas Turbine Combustors  

NLE Websites -- All DOE Office Websites (Extended Search)

Control of Combustion Understanding and Control of Combustion Control of Combustion Understanding and Control of Combustion Dynamics in Gas Turbine Combustors Dynamics in Gas Turbine Combustors Georgia Institute of Technology Georgia Institute of Technology Ben T. Zinn, Tim Lieuwen, Yedidia Neumeier, and Ben Bellows SCIES Project 02-01-SR095 DOE COOPERATIVE AGREEMENT DE-FC26-02NT41431 Tom J. George, Program Manager, DOE/NETL Richard Wenglarz, Manager of Research, SCIES Project Awarded (05/01/2002, 36 Month Duration) $452,695 Total Contract Value CLEMSONPRES.PPT, 10/28/2003, B.T. ZINN, T. LIEUWEN, Y. NEUMEIER Gas Turbine Need Gas Turbine Need * Need: Gas turbine reliability and availability is important factor affecting power plant economics - Problem: Combustion driven oscillations severely reduce part life, requiring substantially more frequent outages

303

Gas Turbine Technology, Part A: Overview, Cycles, and Thermodynamic Performance  

E-Print Network (OSTI)

The growth of cogeneration technology has accelerated in recent years, and it is estimated that fifty percent of the cogeneration market will involve gas turbines. To several energy engineers, gas turbine engines present a new and somewhat perplexing prime mover. This paper (Parts A & B) intends to treat the area of gas turbine technology to provide a broad overview and understanding of this subject. This paper (Part A) covers the basics of gas turbine cycles, thermodynamics and performance considerations that are important in cogeneration. Simple, regenerative and combined cycles will be discussed, along with important performance losses (inlet and exit losses and part load operation). Waste heat recovery, as it relates to gas turbine performance, will also be discussed. This paper will provide the basic equations enabling quick computations to be made. Topics such as typical efficiencies, evaporative cooling costs, emissions, etc. will be discussed. A brief discussion of advanced cycles such as the dual fluid cycle and close cycles is also made.

Meher-Homji, C. B.; Focke, A. B.

1985-05-01T23:59:59.000Z

304

Melt Infiltrated Ceramic Composites (Hipercomp) for Gas Turbine Engine Applications  

DOE Green Energy (OSTI)

This report covers work performed under the Continuous Fiber Ceramic Composites (CFCC) program by GE Global Research and its partners from 1994 through 2005. The processing of prepreg-derived, melt infiltrated (MI) composite systems based on monofilament and multifilament tow SiC fibers is described. Extensive mechanical and environmental exposure characterizations were performed on these systems, as well as on competing Ceramic Matrix Composite (CMC) systems. Although current monofilament SiC fibers have inherent oxidative stability limitations due to their carbon surface coatings, the MI CMC system based on multifilament tow (Hi-Nicalon ) proved to have excellent mechanical, thermal and time-dependent properties. The materials database generated from the material testing was used to design turbine hot gas path components, namely the shroud and combustor liner, utilizing the CMC materials. The feasibility of using such MI CMC materials in gas turbine engines was demonstrated via combustion rig testing of turbine shrouds and combustor liners, and through field engine tests of shrouds in a 2MW engine for >1000 hours. A unique combustion test facility was also developed that allowed coupons of the CMC materials to be exposed to high-pressure, high-velocity combustion gas environments for times up to {approx}4000 hours.

Gregory Corman; Krishan Luthra

2005-09-30T23:59:59.000Z

305

MATERIALS AND COMPONENT DEVELOPMENT FOR ADVANCED TURBINE SYSTEMS  

Science Conference Proceedings (OSTI)

Future hydrogen-fired or oxy-fuel turbines will likely experience an enormous level of thermal and mechanical loading, as turbine inlet temperatures (TIT) approach 1425-1760şC with pressures of 300-625 psig, respectively. Maintaining the structural integrity of future turbine components under these extreme conditions will require durable thermal barrier coatings (TBCs), high temperature creep resistant metal substrates, and effective cooling techniques. While advances in substrate materials have been limited for the past decades, thermal protection of turbine airfoils in future hydrogen-fired and oxy-fuel turbines will rely primarily on collective advances in TBCs and aerothermal cooling. To support the advanced turbine technology development, the National Energy Technology Laboratory (NETL) at the Office of Research and Development (ORD) has initiated a research project effort in collaboration with the University of Pittsburgh (UPitt), and West Virginia University (WVU), working in conjunction with commercial material and coating suppliers, to develop advanced materials, aerothermal configurations, as well as non-destructive evaluation techniques for use in advanced land-based gas turbine applications. This paper reviews technical accomplishments recently achieved in each of these areas.

M. A. Alvin

2009-06-12T23:59:59.000Z

306

Gas Turbine Overhaul Plan (GTOP) for 11N2, Version 1.0  

Science Conference Proceedings (OSTI)

The GTOP ALSTOM11N2SC software enables users to plan, manage, and document major overhauls of Alstom Model GT11N2 simple cycle gas turbines and electric generators. The GTOP ALSTOM11N2SC software has been developed to aid the power industry with economic and efficient planning, scheduling and execution of major overhauls of Alstom Model GT11N2 simple cycle gas turbine generator units using computer-based techniques. This Gas Turbine Overhaul Plan (GTOP) is presented in a computerized format for use with...

2007-03-08T23:59:59.000Z

307

Gas Turbine Overhaul Plans (GTOP) 6FA v1.0  

Science Conference Proceedings (OSTI)

The GTOP® GENERAL ELECTRIC 6FA software enables users to plan, manage, and document major overhauls of General Electric Model MS6001FA simple cycle gas turbines and electric generators. The GTOP® GENERAL ELECTRIC 6FA software has been developed to aid the power industry with economic and efficient planning, scheduling and execution of major overhauls of General Electric Model MS6001FA simple cycle gas turbine generator units using computer-based techniques. This Gas Turbine Overhaul Plan (GTOP®) i...

2009-10-09T23:59:59.000Z

308

GTOP General Electric 7FA (Gas Turbine Overhaul Plan) for GE 7FA, Version 1.0  

Science Conference Proceedings (OSTI)

The Gas Turbine Overhaul Plan (GTOP®) General Electric 7FA, Version 1.0, software enables users to plan, manage and document major overhauls of General Electric Model MS7001FA simple cycle gas turbines and electric generators. Description The GTOP® General Electric 7FA software has been developed to aid the power industry with economic and efficient planning, scheduling and execution of major overhauls of General Electric Model MS7001FA simple cycle gas turbine generator units using computer-base...

2008-10-03T23:59:59.000Z

309

Air extraction and LBTU coal gas combustion in gas turbines for IGCC systems  

SciTech Connect

The primary objective of the cold flow experiments is to study the effects of air extraction from two sites in a heavy-frame gas turbine: (1) the engine wrapper or manholes and (2) the compressor/combustor prediffuser inlet. The experiments involve a scale model of components of a state-of-the-art, US made gas turbine between the compressor exit and the turbine inlet Specifically, the purpose is to observe and measure how air extraction affects the flow distribution around the combustor cans and the impingement cooling flow rates on transition pieces of the combustor. The experimental data should provide turbine manufacturers the information needed to determine their preferred air extraction site. The secondary objectives for the experiments are as follows: (1) to identify regions with high-pressure losses, (2) to develop a dam base which will validate computational fluid dynamic calculations, and (3) to establish an experimental facility which may be used to assist the US industry in improving the aerodynamic design of nonrotating components of a heavy-frame gas turbine.

Yang, Tah-teh; Agrawal, A.K.; Kapat, J.S.

1992-01-01T23:59:59.000Z

310

High freestream turbulence levels have been shown to greatly augment the heat transfer along a gas turbine airfoil, particularly for the first stage  

E-Print Network (OSTI)

along a gas turbine airfoil, particularly for the first stage nozzle guide vane. For this study of the variables affecting boundary layer development on gas turbine airfoils, studies need to be performed of a variety of gas turbine combustors have shown that the levels can range between 8% and 40% (Kuotmos and Mc

Thole, Karen A.

311

Biennial Assessment of the Fifth Power Plan Gas Turbine Power Plant Planning Assumptions  

E-Print Network (OSTI)

Biennial Assessment of the Fifth Power Plan Gas Turbine Power Plant Planning Assumptions October 17, 2006 Simple- and combined-cycle gas turbine power plants fuelled by natural gas are among the bulk-emission and efficient gas turbine technology made combined-cycle gas turbine power plants the "resource of choice

312

Gas Turbine Considerations in the Pulp and Paper Industry  

E-Print Network (OSTI)

The pulp and paper industry is one of the largest users of energy in the industrial arena. Large quantities of process steam and electrical energy are required per unit of production. The pulp and paper industry has recognized the thermodynamic benefits and potentially attractive economics of developing power generation as an integral part of their power plant systems. The large requirements for process steam combined with process by-products and wood wastes make steam turbines a serious consideration in plant locations where suitable economic conditions are present. And many systems incorporating a wide variety of steam turbine types have been installed and are contributing toward profitable operations. In recent years, competitive pressures, environmental concerns, the cost and availability of various fuels, and new power generation opportunities have awakened the interest in power generation in the pulp and paper industry, as well as others. A strategic review of these issues creates the opportunity to favorably position the pulp and paper industry for the coming century. The industry has also become aware that gas turbine-based cogeneration systems can frequently be highly desirable relative to their traditional steam turbine approach.

Anderson, J. S.; Kovacik, J. M.

1990-06-01T23:59:59.000Z

313

A Silicon-Based Micro Gas Turbine Engine for Power Generation  

E-Print Network (OSTI)

This paper reports on our research in developing a micro power generation system based on gas turbine engine and piezoelectric converter. The micro gas turbine engine consists of a micro combustor, a turbine and a centrifugal compressor. Comprehensive simulation has been implemented to optimal the component design. We have successfully demonstrated a silicon-based micro combustor, which consists of seven layers of silicon structures. A hairpin-shaped design is applied to the fuel/air recirculation channel. The micro combustor can sustain a stable combustion with an exit temperature as high as 1600 K. We have also successfully developed a micro turbine device, which is equipped with enhanced micro air-bearings and driven by compressed air. A rotation speed of 15,000 rpm has been demonstrated during lab test. In this paper, we will introduce our research results major in the development of micro combustor and micro turbine test device.

Shan, X -C; Maeda, R; Sun, Y F; Wu, M; Hua, J S

2007-01-01T23:59:59.000Z

314

Advanced coal-fueled gas turbine systems  

Science Conference Proceedings (OSTI)

Activity towards completing Advanced Turbine Systems (ATS) Phase I work was begun again in December. Effort to complete the Phase I work was temporarily suspended upon receipt of the ATS Phase II RFP the last week in August. The Westinghouse ATS team's efforts were directed at preparing the ATS Phase II proposal which was submitted November 18. It is planned to finish Phase I work and submit the topical report by the end of February 1993. The objective of the four slogging combustor tests conducted during this reporting period (i.e., tests SL3-1 through SL3-4) were to perform sulfur capture experiments using limestoneand iron oxide based sorbents and to collect exhaust vapor phase and solids bound alkali measurements using the Westinghouse and Ames Laboratory alkali probes/monitors. The most significant, if not outstanding result revealed by these tests is that the Ames alkali monitor indicates that the vapor phase sodium is approximately 23--30 ppbw and the vapor phase potassium is approximately 5--20 ppbw. For reference, alkalilevels of 20 ppbw are acceptable in Westinghouse gas turbines fueled with crude oil.

Not Available

1993-02-03T23:59:59.000Z

315

Thermochemically recuperated and steam cooled gas turbine system  

DOE Patents (OSTI)

A gas turbine system is described in which the expanded gas from the turbine section is used to generate the steam in a heat recovery steam generator and to heat a mixture of gaseous hydrocarbon fuel and the steam in a reformer. The reformer converts the hydrocarbon gas to hydrogen and carbon monoxide for combustion in a combustor. A portion of the steam from the heat recovery steam generator is used to cool components, such as the stationary vanes, in the turbine section, thereby superheating the steam. The superheated steam is mixed into the hydrocarbon gas upstream of the reformer, thereby eliminating the need to raise the temperature of the expanded gas discharged from the turbine section in order to achieve effective conversion of the hydrocarbon gas. 4 figs.

Viscovich, P.W.; Bannister, R.L.

1995-07-11T23:59:59.000Z

316

Thermochemically recuperated and steam cooled gas turbine system  

DOE Patents (OSTI)

A gas turbine system in which the expanded gas from the turbine section is used to generate the steam in a heat recovery steam generator and to heat a mixture of gaseous hydrocarbon fuel and the steam in a reformer. The reformer converts the hydrocarbon gas to hydrogen and carbon monoxide for combustion in a combustor. A portion of the steam from the heat recovery steam generator is used to cool components, such as the stationary vanes, in the turbine section, thereby superheating the steam. The superheated steam is mixed into the hydrocarbon gas upstream of the reformer, thereby eliminating the need to raise the temperature of the expanded gas discharged from the turbine section in order to achieve effective conversion of the hydrocarbon gas.

Viscovich, Paul W. (Longwood, FL); Bannister, Ronald L. (Winter Springs, FL)

1995-01-01T23:59:59.000Z

317

Assessment of a water-cooled gas-turbine concept. Final report  

SciTech Connect

A program for development of Ultra-High Temperature (UHT) 2800/sup 0/F firing temperature, water-cooled turbine technology began in 1967. In 1973 it was decided to design and build a full-scale gas turbine to demonstrate the feasibility and evaluate the performance and economics of a complete utility-size machine. The preliminary design phase, performed from June 1974 to March 1975 is reported here with information on the definition of the baseline cycle for the UHT machine in a combined cycle power plant; turbine aerodynamics; design of turbine, its cooling system, and the combustor; materials selection; controls; cost estimates; heat flux experiments, and program planning. (LCL)

1975-08-01T23:59:59.000Z

318

Combustor assembly in a gas turbine engine  

Science Conference Proceedings (OSTI)

A combustor assembly in a gas turbine engine. The combustor assembly includes a combustor device coupled to a main engine casing, a first fuel injection system, a transition duct, and an intermediate duct. The combustor device includes a flow sleeve for receiving pressurized air and a liner disposed radially inwardly from the flow sleeve. The first fuel injection system provides fuel that is ignited with the pressurized air creating first working gases. The intermediate duct is disposed between the liner and the transition duct and defines a path for the first working gases to flow from the liner to the transition duct. An intermediate duct inlet portion is associated with a liner outlet and allows movement between the intermediate duct and the liner. An intermediate duct outlet portion is associated with a transition duct inlet section and allows movement between the intermediate duct and the transition duct.

Wiebe, David J; Fox, Timothy A

2013-02-19T23:59:59.000Z

319

Wavelet analysis for gas turbine fault diagnostics  

SciTech Connect

The application of wavelet analysis to diagnosing faults in gas turbines is examined in the present paper. Applying the wavelet transform to time signals obtained from sensors placed on an engine gives information in correspondence to their Fourier transform. Diagnostic techniques based on Fourier analysis of signals can therefore be transposed to the wavelet analysis. In the paper the basic properties of wavelets, in relation to the nature of turbomachinery signals, are discussed. The possibilities for extracting diagnostic information by means of wavelets are examined, by studying the applicability to existing data from vibration, unsteady pressure, and acoustic measurements. Advantages offered, with respect to existing methods based on harmonic analysis, are discussed as well as particular requirements related to practical application.

Aretakis, N.; Mathioudakis, K. [National Technical Univ. of Athens (Greece). Lab. of Thermal Turbomachines

1997-10-01T23:59:59.000Z

320

Summary of Gas Turbine Operation on Liquid Biofuels  

Science Conference Proceedings (OSTI)

Biodiesel, an alternative liquid biofuel option for stationary gas turbines, has gained much interest in the past decade. This report documents recent biodiesel field tests on aeroderivative and frame class gas turbines. Pollutant emissions and engine performance for these gas turbineswhich include models from General Electric, Siemens, Pratt Whitney, and Alstomwere plotted, compared, and analyzed to determine trends, similarities, and noticeable differences. In addition, the report documents engine oper...

2011-12-13T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Gas Turbine and Generator Procurement Guidelines: Best Practices and Specification  

Science Conference Proceedings (OSTI)

This report provides a specification in the style used by engineering, procurement, and construction (EPC) firms for procuring gas turbines and associated generators and accessories, as well as guidelines that describe best practices for defining the functional design requirements for such equipment. BackgroundGas turbines, fired by readily available natural gas, provide the majority of new power generation worldwide. Changes in the mix of generation ...

2012-10-29T23:59:59.000Z

322

Guideline for Procurement of Gas Turbine Parts: Casting Quality and Inspection  

Science Conference Proceedings (OSTI)

EPRI has previously developed a series of Parts Procurement Guides to help engine owners assess alternate component designs and obtain competitive quotes from non-OEM aftermarket suppliers offering replacement airfoils for the more widely used gas turbine models. These procurement guidelines provide owners with the requirements needed to procure buckets and nozzles for their specific gas turbine model. The guidelines reference different inspection standards published by organizations such as American Soc...

2010-12-23T23:59:59.000Z

323

MODELING AND CONTROL OF A O2/CO2 GAS TURBINE CYCLE FOR CO2 CAPTURE  

E-Print Network (OSTI)

MODELING AND CONTROL OF A O2/CO2 GAS TURBINE CYCLE FOR CO2 CAPTURE Lars Imsland Dagfinn Snarheim and control of a semi-closed O2/CO2 gas turbine cycle for CO2 capture. In the first part the process predictive control, Gas turbines, CO2 capture 1. INTRODUCTION Gas turbines are widely used for power

Foss, Bjarne A.

324

On optimization of sensor selection for aircraft gas turbine engines Ramgopal Mushini  

E-Print Network (OSTI)

On optimization of sensor selection for aircraft gas turbine engines Ramgopal Mushini Cleveland sets for the problem of aircraft gas turbine engine health parameter estimation. The performance metric for generating an optimal sensor set [3]. 3. Aircraft gas turbine engines An aircraft gas turbine engine

Simon, Dan

325

Direct coal-fired gas turbines for combined cycle plants  

SciTech Connect

The combustion/emissions control island of the CFTCC plant produces cleaned coal combustion gases for expansion in the gas turbine. The gases are cleaned to protect the turbine from flow-path degeneration due to coal contaminants and to reduce environmental emissions to comparable or lower levels than alternate clean coal power plant tedmologies. An advantage of the CFTCC system over other clean coal technologies using gas turbines results from the CFTCC system having been designed as an adaptation to coal of a natural gas-fired combined cycle plant. Gas turbines are built for compactness and simplicity. The RQL combustor is designed using gas turbine combustion technology rather than process plant reactor technology used in other pressurized coal systems. The result is simpler and more compact combustion equipment than for alternate technologies. The natural effect is lower cost and improved reliability. In addition to new power generation plants, CFTCC technology will provide relatively compact and gas turbine compatible coal combustion/emissions control islands that can adapt existing natural gas-fired combined cycle plants to coal when gas prices rise to the point where conversion is economically attractive. Because of the simplicity, compactness, and compatibility of the RQL combustion/emission control island compared to other coal technologies, it could be a primary candidate for such conversions.

Rothrock, J.; Wenglarz, R.; Hart, P.; Mongia, H.

1993-11-01T23:59:59.000Z

326

Standards of performance for new stationary sources gas turbines  

SciTech Connect

In order to implement the Clean Air Act, the U.S. Environmental Protection Agency establishes standards of performance which limit emissions of nitrogen oxides and sulfur dioxide from new, modified, and reconstructed stationary gas turbines. The intended effect of this regulation is to require new, modified, and reconstructed stationary gas turbines to use the best demonstrated system of continuous emission reduction. There are no emission limits for gas turbines below 10.7 gigaj/hr. For all gas turbines 10.7 gigaj/hr and larger, the sulfur dioxide emission limit is 150 ppm; alternatively, a fuel with less than 0.8Vertical Bar3< sulfur can be fired. For gas turbines between 10.7 and 107.2 giga8/hr used for gas and oil transportation or production not located in a Metropolitan Statistical Area (MSA), the nitrogen oxides emission limit is 150 ppm. For gas turbines larger than 107.2 gigaj/hr used for gas and oil transportation or production located in an MSA, and for all other uses, the nitrogen oxides emission limit is 75 ppm. These regulations are effective as of 9/10/79.

1979-09-10T23:59:59.000Z

327

Helium turbine design for a 1000 MWe gas-cooled fast breeder reactor with closed gas turbine cycle  

SciTech Connect

This report deals exclusively with the preliminary design of a double-flooded helium turbine for a 1000 MWe gas-cooled fast breeder reactor. The influence is studied of several parameters, such as hub ratio, exit angle of the turbine wheel and inlet angle of the guide wheel, on the designed size of the turbine and the centrifugal stress of the blading, in order to get a survey which is helpful in the preliminary design.

Savatteri, C.

1973-02-15T23:59:59.000Z

328

HUMID AIR TURBINE CYCLE TECHNOLOGY DEVELOPMENT PROGRAM  

SciTech Connect

The Humid Air Turbine (HAT) Cycle Technology Development Program focused on obtaining HAT cycle combustor technology that will be the foundation of future products. The work carried out under the auspices of the HAT Program built on the extensive low emissions stationary gas turbine work performed in the past by Pratt & Whitney (P&W). This Program is an integral part of technology base development within the Advanced Turbine Systems Program at the Department of Energy (DOE) and its experiments stretched over 5 years. The goal of the project was to fill in technological data gaps in the development of the HAT cycle and identify a combustor configuration that would efficiently burn high moisture, high-pressure gaseous fuels with low emissions. The major emphasis will be on the development of kinetic data, computer modeling, and evaluations of combustor configurations. The Program commenced during the 4th Quarter of 1996 and closed in the 4th Quarter of 2001. It teamed the National Energy Technology Laboratory (NETL) with P&W, the United Technologies Research Center (UTRC), and a subcontractor on-site at UTRC, kraftWork Systems Inc. The execution of the program started with bench-top experiments that were conducted at UTRC for extending kinetic mechanisms to HAT cycle temperature, pressure, and moisture conditions. The fundamental data generated in the bench-top experiments was incorporated into the analytical tools available at P&W to design the fuel injectors and combustors. The NETL then used the hardware to conduct combustion rig experiments to evaluate the performance of the combustion systems at elevated pressure and temperature conditions representative of the HAT cycle. The results were integrated into systems analysis done by kraftWork to verify that sufficient understanding of the technology had been achieved and that large-scale technological application and demonstration could be undertaken as follow-on activity. An optional program extended the experimental combustion evaluations to several specific technologies that can be used with HAT technology. After 5 years of extensive research and development, P&W is pleased to report that the HAT Technology Development Program goals have been achieved. With 0 to 10 percent steam addition, emissions achieved during this program featured less than 8 ppm NO{sub x}, less than 16 ppm CO, and unburned hydrocarbons corrected to 15 percent O{sub 2} for an FT8 engine operating between 0 and 120 F with 65 to 100 percent power at any day.

Richard Tuthill

2002-07-18T23:59:59.000Z

329

Turbine-generator set development for power generation  

DOE Green Energy (OSTI)

The goal of this effort was to design, develop, and demonstrate an integrated turbine genset suitable for the power generation requirements of a hybrid automotive propulsion system. The result of this effort would have been prototype generator hardware including controllers for testing and evaluation by Allison Engine Company. The generator would have been coupled to a suitably sized and configured gas turbine engine, which would operate on a laboratory load bank. This effort could lead to extensive knowledge and design capability in the most efficient generator design for hybrid electric vehicle power generation and potentially to commercialization of these advanced technologies. Through the use of the high-speed turbines as a power source for the hybrid-electric vehicles, a significant reduction in nitrous oxides emissions would be achieved when compared to those of conventional gas powered vehicles.

Adams, D.J. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States); Berenyi, S.G. [Allison Engine Co., Indianapolis, IN (United States)

1997-04-15T23:59:59.000Z

330

Aeroderivative Gas Turbines Can Meet Stringent NOx Control Requirements  

E-Print Network (OSTI)

Gas Turbines operating in the United States are required to meet federally mandated emission standards. This article will discuss how General Electric's LM industrial aeroderivative gas turbines are meeting NOx requirements as low as 25 parts per million using steam injection. The article will also describe the technical aspects of how water or steam injection can be used to supress NOx, what emission levels GE will guarantee and detail some recently obtained test results. The side benefits of water or steam injection for controlling NOx emissions will be discussed. Steam injection has a very favorable effect on engine performance raising both the power output and efficiency. As an example, full steam injection in the GE LM5000 gas turbine increases the power output from 34 MW to 52 MW while lowering the heat rate from 9,152 Btu/kWh to 7,684 Btu/kWh when fired on natural gas. Water injection increases power output at a slightly decreased thermal efficiency. When steam is injected, NOx can be controlled to 25 ppm (referenced to 15 percent O2) which is sufficient to comply with the most stringent requirements imposed in areas where water or steam injection is considered best available control technology (BACT). Selective Catalytic Reduction (SCR) systems are currently employed in areas with Lowest Achievable Emissions Requirements. SCRs have been proposed as BACT in several areas such as the Bay area of California and the state of New Jersey. These systems are expensive to install and operate, and this cost impact can cause many projects to become economically non-viable. Cost comparisons for NOx removal using an SCR in combination with the steam injection will demonstrate the large incremental cost incurred when NOx is controlled using an SCR. Lastly, a case will be made for not imposing SCR as BACT in that it would close the door on further research and development for better, cost-effective methods of NOx control.

Keller, S. C.; Studniarz, J. J.

1987-09-01T23:59:59.000Z

331

A High Efficiency PSOFC/ATS-Gas Turbine Power System  

DOE Green Energy (OSTI)

A study is described in which the conceptual design of a hybrid power system integrating a pressurized Siemens Westinghouse solid oxide fuel cell generator and the Mercury{trademark} 50 gas turbine was developed. The Mercury{trademark} 50 was designed by Solar Turbines as part of the US. Department of Energy Advanced Turbine Systems program. The focus of the study was to develop the hybrid power system concept that principally would exhibit an attractively-low cost of electricity (COE). The inherently-high efficiency of the hybrid cycle contributes directly to achieving this objective, and by employing the efficient, power-intensive Mercury{trademark} 50, with its relatively-low installed cost, the higher-cost SOFC generator can be optimally sized such that the minimum-COE objective is achieved. The system cycle is described, major system components are specified, the system installed cost and COE are estimated, and the physical arrangement of the major system components is discussed. Estimates of system power output, efficiency, and emissions at the system design point are also presented. In addition, two bottoming cycle options are described, and estimates of their effects on overall-system performance, cost, and COE are provided.

W.L. Lundberg; G.A. Israelson; M.D. Moeckel; S.E. Veyo; R.A. Holmes; P.R. Zafred; J.E. King; R.E. Kothmann

2001-02-01T23:59:59.000Z

332

Superior Thermal Barrier Coatings for Industrial Gas-Turbine...  

NLE Websites -- All DOE Office Websites (Extended Search)

070103 (36 Months Duration) 546,000 Total Contract Value (546,000 DOE) Superior Thermal Barrier Coatings for Industrial Gas-Turbine Engines Using a Novel Solution-Precursor...

333

NETL: News Release - DOE Research Grant Leads to Gas Turbine...  

NLE Websites -- All DOE Office Websites (Extended Search)

DOE Publications News Release Release Date: August 16, 2011 DOE Research Grant Leads to Gas Turbine Manufacturing Improvements Washington, D.C. - Research sponsored by the U.S....

334

GAS TURBINE REHEAT USING IN-SITU COMBUSTION  

NLE Websites -- All DOE Office Websites (Extended Search)

GAS TURBINE REHEAT USING IN-SITU COMBUSTION Topical Report: Task 2 - Combustion and Emissions Cooperative Agreement No. DE-FC26-00NT40913 April 30, 2004 by D.M. Bachovchin T.E....

335

Monitoring system improves maintenance for North Sea industrial gas turbines  

SciTech Connect

A change in maintenance emphasis and installation of a computerized condition-monitoring system for Type-H industrial gas turbines on Ekofisk platforms have led to more efficient use of manpower and more-productive machinery.

Cullen, J.P. (Phillips Petroleum Co., Tanager (NO))

1988-10-24T23:59:59.000Z

336

Acoustic Design of Aircraft Gas Turbine Test Cells  

Science Conference Proceedings (OSTI)

The high noise level associated with aircraft gas turbine operation creates two noise problems: (1) The reduction of the noise in the neighborhood of the installation to an acceptable level

R. O. Fehr; R. J. Wells; T. L. Bray

1952-01-01T23:59:59.000Z

337

Improved Gas Turbines for LBTU Syngas Fuel Operation  

Science Conference Proceedings (OSTI)

Gas turbine engines running on syngas can take advantage of that fuel's high mass flow per BTU. Optimizing performance while keeping all operating parameters within acceptable limits was the result of a G.E. project.

1997-01-03T23:59:59.000Z

338

Gas turbine performance versus time in service. Final report  

SciTech Connect

Gas turbine performance deterioration is accompanied by changes to the parameter relationships of the gas turbine components and mostly to those parameters that are significantly affected by changes to the gas turbine's components efficiencies, namely power output and heat rate. Deterioration, therefore, is characterized by a decrease in power and an increase in heat rate at constant turbine temperature, and an increase in fuel flow and heat rate at constant engine or compressor pressure ratio or at constant power output. The loss in component efficiency is normally caused by changes in the gas path configuration of the compressor(s) and/or turbine(s). These changes are normally characterized by erosion and/or corrosion of air foils, air or gas seals, or deposits on air foils which significantly affect the flow characteristics of these parts. In any case, we are talking about the introduction of fouling, corrosion, and erosion agents into the gas path through the air inlet system and the fuel system. Since the environment and fuels are the major sources of gas path contamination, such things as air filters, fuel quality, duty cycle, gas path configuration, geographic consideration, cleaning techniques and frequency should influence the rate at which deterioration takes place. Data from single shaft gas turbines operated at continuous base load power, and baseload peaking duty cycle, was used to quantify typical deterioration curves for these machines. Power deviation differences at 10,000 hours chargeable to natural gas vs distillate fuel is six percentage points in favor of natural gas. The effect of evaporative coolers, airwashers and high efficiency filters in terms of power deviation at 10,000 hours is approximately five percentage points in favor of the filtered or airwashed inlet.

Brazel, W.N.

1985-07-01T23:59:59.000Z

339

Gas Turbine Rotor Life Evaluation: GE 7E/EA  

Science Conference Proceedings (OSTI)

Gas turbine rotor materials are subject to degradation from prolonged hours and multiple start/stop cycles of operation. Periodically, plant operators disassemble the compressor and turbine sections of the rotor system and inspect the components for signs of creep, embrittlement, corrosion, thermal fatigue, and high- and low-cycle fatigue. These inspections typically take place during hot-gas-path and major maintenance intervals when casings are removed. This report provides results of an analysis to est...

2011-10-26T23:59:59.000Z

340

Assessment of Gas Turbine Combustion Dynamics Monitoring Technologies: Interim Report  

Science Conference Proceedings (OSTI)

This report examines commercially available combustion dynamics monitoring systems (CDMS) and monitoring centers for use on gas turbine engines, specifically 7FA, 501F/5000F/8000H engines. The report provides a current review of combustion monitoring issues and methods, details of operation and available features for various CDMS, including, interviews with equipment suppliers and monitoring center providers, and end-user interviews.BackgroundGas turbines are ...

2013-12-18T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
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341

Gas Turbine Rotor Life Evaluation: Siemens V84.2  

Science Conference Proceedings (OSTI)

Gas turbine rotor materials are subject to degradation from prolonged hours and multiple start/stop cycles of operation. Occasionally, plant operators have the compressor and turbine sections of the rotor system disassembled and the components inspected for signs of creep, embrittlement, corrosion, thermal fatigue, and high- and low-cycle fatigue. Inspections of rotor rim areas typically take place more regularly during hot gas path and major maintenance intervals when casings and blades are removed. Thi...

2011-11-10T23:59:59.000Z

342

Survey of Gas Turbine Component Repair Shops - 2008 Update  

Science Conference Proceedings (OSTI)

Aftermarket repair services for gas turbine O&M has been undergoing continual transformation beginning with the emergence of independent shops in the 1980s. The original equipment manufacturers (OEMs) began to aggressively pursue repair services in the late 1990s. Gas turbine hot section component repair/replacement coupled with inspection/overhaul technical support has come to be known broadly as long-term service agreements (LTSAs). These agreements often extend from 6 to 18 years. The repair business ...

2009-03-17T23:59:59.000Z

343

Indirect-fired gas turbine dual fuel cell power cycle  

DOE Patents (OSTI)

The present invention relates generally to an integrated fuel cell power plant, and more specifically to a combination of cycles wherein a first fuel cell cycle tops an indirect-fired gas turbine cycle and a second fuel cell cycle bottoms the gas turbine cycle so that the cycles are thermally integrated in a tandem operating arrangement. The United States Government has rights in this invention pursuant to the employer-employee relationship between the United States Department of Energy and the inventors.

Micheli, P.L.; Williams, M.C.; Sudhoff, F.A.

1998-04-01T23:59:59.000Z

344

Fuel cell/gas turbine system performance studies  

SciTech Connect

Because of the synergistic effects (higher efficiencies, lower emissions) of combining a fuel cell and a gas turbine into a power generation system, many potential system configurations were studied. This work is focused on novel power plant systems by combining gas turbines, solid oxide fuel cells, and a high-temperature heat exchanger; these systems are ideal for the distributed power and on- site markets in the 1-5 MW size range.

Lee, G.T.; Sudhoff, F.A.

1996-12-31T23:59:59.000Z

345

Development of turbine driven centrifugal compressors for non-condensible gas removal at geothermal power plants. Final report  

SciTech Connect

Initial field tests have been completed for a Non-Condensible Gas (NCG) turbocompressor for geothermal power plants. It provides alternate technology to steam-jet ejectors and liquid-ring vacuum pumps that are currently used for NCG removal. It incorporates a number of innovative design features to enhance reliability, reduce steam consumption and reduce O&M costs. During initial field tests, the turbocompressor has been on-line for more than 4500 hours as a third stage compressor at The Geysers Unit 11 Power Plant. Test data indicates its overall efficiency is about 25% higher than a liquid-ring vacuum pump, and 250% higher than a steam-jet ejector when operating with compressor inlet pressures of 12.2 in-Hga and flow rates over 20,000 lbm/hr.

1997-12-16T23:59:59.000Z

346

High-pressure coal-fired ceramic air heater for gas turbine applications. Technical quarterly progress report, May 1994--July 1994  

SciTech Connect

Progress is reported on the development of a coal-fired ceramic air heater for gas turbine applications. This report describes component development.

1996-02-01T23:59:59.000Z

347

Understanding and Control of Combustion Dynamics In Gas Turbine...  

NLE Websites -- All DOE Office Websites (Extended Search)

result could have significant implications on the development of future high hydrogen turbine systems. 7 5. PROJECT DESCRIPTION Under the DOENETL program, Georgia Institute of...

348

Fuel Flexible Combustion Systems for High-Efficiency Utilization of Opportunity Fuels in Gas Turbines  

SciTech Connect

The purpose of this program was to develop low-emissions, efficient fuel-flexible combustion technology which enables operation of a given gas turbine on a wider range of opportunity fuels that lie outside of current natural gas-centered fuel specifications. The program encompasses a selection of important, representative fuels of opportunity for gas turbines with widely varying fundamental properties of combustion. The research program covers conceptual and detailed combustor design, fabrication, and testing of retrofitable and/or novel fuel-flexible gas turbine combustor hardware, specifically advanced fuel nozzle technology, at full-scale gas turbine combustor conditions. This project was performed over the period of October 2008 through September 2011 under Cooperative Agreement DE-FC26-08NT05868 for the U.S. Department of Energy/National Energy Technology Laboratory (USDOE/NETL) entitled "Fuel Flexible Combustion Systems for High-Efficiency Utilization of Opportunity Fuels in Gas Turbines". The overall objective of this program was met with great success. GE was able to successfully demonstrate the operability of two fuel-flexible combustion nozzles over a wide range of opportunity fuels at heavy-duty gas turbine conditions while meeting emissions goals. The GE MS6000B ("6B") gas turbine engine was chosen as the target platform for new fuel-flexible premixer development. Comprehensive conceptual design and analysis of new fuel-flexible premixing nozzles were undertaken. Gas turbine cycle models and detailed flow network models of the combustor provide the premixer conditions (temperature, pressure, pressure drops, velocities, and air flow splits) and illustrate the impact of widely varying fuel flow rates on the combustor. Detailed chemical kinetic mechanisms were employed to compare some fundamental combustion characteristics of the target fuels, including flame speeds and lean blow-out behavior. Perfectly premixed combustion experiments were conducted to provide experimental combustion data of our target fuels at gas turbine conditions. Based on an initial assessment of premixer design requirements and challenges, the most promising sub-scale premixer concepts were evaluated both experimentally and computationally. After comprehensive screening tests, two best performing concepts were scaled up for further development. High pressure single nozzle tests were performed with the scaled premixer concepts at target gas turbine conditions with opportunity fuels. Single-digit NOx emissions were demonstrated for syngas fuels. Plasma-assisted pilot technology was demonstrated to enhance ignition capability and provide additional flame stability margin to a standard premixing fuel nozzle. However, the impact of plasma on NOx emissions was observed to be unacceptable given the goals of this program and difficult to avoid.

Venkatesan, Krishna

2011-11-30T23:59:59.000Z

349

Steam cooling system for a gas turbine  

SciTech Connect

The steam cooling circuit for a gas turbine includes a bore tube assembly supplying steam to circumferentially spaced radial tubes coupled to supply elbows for transitioning the radial steam flow in an axial direction along steam supply tubes adjacent the rim of the rotor. The supply tubes supply steam to circumferentially spaced manifold segments located on the aft side of the 1-2 spacer for supplying steam to the buckets of the first and second stages. Spent return steam from these buckets flows to a plurality of circumferentially spaced return manifold segments disposed on the forward face of the 1-2 spacer. Crossover tubes couple the steam supply from the steam supply manifold segments through the 1-2 spacer to the buckets of the first stage. Crossover tubes through the 1-2 spacer also return steam from the buckets of the second stage to the return manifold segments. Axially extending return tubes convey spent cooling steam from the return manifold segments to radial tubes via return elbows.

Wilson, Ian David (Mauldin, SC); Barb, Kevin Joseph (Halfmoon, NY); Li, Ming Cheng (Cincinnati, OH); Hyde, Susan Marie (Schenectady, NY); Mashey, Thomas Charles (Coxsackie, NY); Wesorick, Ronald Richard (Albany, NY); Glynn, Christopher Charles (Hamilton, OH); Hemsworth, Martin C. (Cincinnati, OH)

2002-01-01T23:59:59.000Z

350

Advanced coal fueled industrial cogeneration gas turbine system. Final report, June 1986--April 1994  

SciTech Connect

Demonstration of a direct coal-fueled gas turbine system that is environmentally, technically, and economically viable depends on the satisfactory resolution of several key issues. Solar Turbines, Incorporates technical approach to these issues was to advance a complete direct coal-fueled gas turbine system that incorporated near-term technology solutions to both historically demonstrated problem areas such as deposition, erosion, and hot end corrosion, and to the emergent environmental constraints based on NO{sub x}, SO{sub x}, and particulates. Solar`s program approach was keyed to the full commercialization of the coal-fueled cogeneration gas turbine which would occur after extended field verification demonstrations conducted by the private sector. The program was structured in three phases plus an optional fourth phase: Phase 1 -- system description; Phase 2 -- component development; Phase 3 -- prototype system verification; and Phase 4 -- field evaluation.

LeCren, R.T.

1994-05-01T23:59:59.000Z

351

Advanced gas turbines: The choice for low-cost, environmentally superior electric power generation  

SciTech Connect

In July 1993, the US Department of Energy (DOE) initiated an ambitious 8-year program to advance state-of-the-art gas turbine technology for land-based electric power generation. The program, known as the Advanced Turbine System (ATS) Program, is a joint government/industry program with the objective to demonstrate advanced industrial and utility gas turbine systems by the year 2000. The goals of the ATS Program are to develop gas turbine systems capable of providing low-cost electric power, while maintaining environmental superiority over competing power generation options. A progress report on the ATS Program pertaining to program status at DOE will be presented and reviewed in this paper. The technical challenges, advanced critical technology requirements, and systems designs meeting the goals of the program will be described and discussed.

Zeh, C.M.

1996-08-01T23:59:59.000Z

352

Computer Aided Design of Advanced Turbine Airfoil Alloys for Industrial Gas Turbines in Coal Fired Environments  

SciTech Connect

Recent initiatives for fuel flexibility, increased efficiency and decreased emissions in power generating industrial gas turbines (IGT's), have highlighted the need for the development of techniques to produce large single crystal or columnar grained, directionally solidified Ni-base superalloy turbine blades and vanes. In order to address the technical difficulties of producing large single crystal components, a program has been initiated to, using computational materials science, better understand how alloy composition in potential IGT alloys and solidification conditions during processing, effect castability, defect formation and environmental resistance. This program will help to identify potential routes for the development of high strength, corrosion resistant airfoil/vane alloys, which would be a benefit to all IGT's, including small IGT's and even aerospace gas turbines. During the first year, collaboration with Siemens Power Corporation (SPC), Rolls-Royce, Howmet and Solar Turbines has identified and evaluated about 50 alloy compositions that are of interest for this potential application. In addition, alloy modifications to an existing alloy (CMSX-4) were also evaluated. Collaborating with SPC and using computational software at SPC to evaluate about 50 alloy compositions identified 5 candidate alloys for experimental evaluation. The results obtained from the experimentally determined phase transformation temperatures did not compare well to the calculated values in many cases. The effects of small additions of boundary strengtheners (i.e., C, B and N) to CMSX-4 were also examined. The calculated phase transformation temperatures were somewhat closer to the experimentally determined values than for the 5 candidate alloys, discussed above. The calculated partitioning coefficients were similar for all of the CMSX-4 alloys, similar to the experimentally determined segregation behavior. In general, it appears that computational materials science has become a useful tool to help reduce the number of iterations necessary to perform laboratory experiments or alloy development. However, we clearly are not able to rely solely on computational techniques in the development of high temperature materials for IGT applications. A significant amount of experimentation will continue to be required.

G.E. Fuchs

2007-12-31T23:59:59.000Z

353

Gas Turbine Technology, Part B: Components, Operations and Maintenance  

E-Print Network (OSTI)

This paper builds on Part A and discusses the hardware involved in gas turbines as well as operations and maintenance aspects pertinent to cogeneration plants. Different categories of gas turbines are reviewed such as heavy duty aeroderivative, single and split shaft. The pros and cons of different types are reviewed. Gas turbine component types - axial and centrifugal compressors and different turbine types, along with combustor types will be discussed. Important considerations during machine specifications are also reviewed. Practical aspects such as coatings, materials, fuel handling and auxiliary systems will also be highlighted. Operations and maintenance aspects including Preventative Maintenance, Repairs, Fuel and Air Filtration, Compressor Washing and Reliability is discussed. Typical operating and maintenance costs are provided. This paper presents an extensive bibliography to enable readers to follow up any topic in detail.

Meher-Homji, C. B.; Focke, A. B.

1985-05-01T23:59:59.000Z

354

Air extraction in gas turbines burning coal-derived gas  

SciTech Connect

In the first phase of this contracted research, a comprehensive investigation was performed. Principally, the effort was directed to identify the technical barriers which might exist in integrating the air-blown coal gasification process with a hot gas cleanup scheme and the state-of-the-art, US made, heavy-frame gas turbine. The guiding rule of the integration is to keep the compressor and the expander unchanged if possible. Because of the low-heat content of coal gas and of the need to accommodate air extraction, the combustor and perhaps, the flow region between the compressor exit and the expander inlet might need to be modified. In selecting a compressed air extraction scheme, one must consider how the scheme affects the air supply to the hot section of the turbine and the total pressure loss in the flow region. Air extraction must preserve effective cooling of the hot components, such as the transition pieces. It must also ensure proper air/fuel mixing in the combustor, hence the combustor exit pattern factor. The overall thermal efficiency of the power plant can be increased by minimizing the total pressure loss in the diffusers associated with the air extraction. Therefore, a study of airflow in the pre- and dump-diffusers with and without air extraction would provide information crucial to attaining high-thermal efficiency and to preventing hot spots. The research group at Clemson University suggested using a Griffith diffuser for the prediffuser and extracting air from the diffuser inlet. The present research establishes that the analytically identified problems in the impingement cooling flow are factual. This phase of the contracted research substantiates experimentally the advantage of using the Griffith diffuser with air extraction at the diffuser inlet.

Yang, Tah-teh; Agrawal, A.K.; Kapat, J.S.

1993-11-01T23:59:59.000Z

355

An evaluation of thermal energy storage options for precooling gas turbine inlet air  

SciTech Connect

Several approaches have been used to reduce the temperature of gas turbine inlet air. One of the most successful uses off-peak electric power to drive vapor-compression-cycle ice makers. The ice is stored until the next time high ambient temperature is encountered, when the ice is used in a heat exchanger to cool the gas turbine inlet air. An alternative concept would use seasonal thermal energy storage to store winter chill for inlet air cooling. The objective of this study was to compare the performance and economics of seasonal thermal energy storage in aquifers with diurnal ice thermal energy storage for gas turbine inlet air cooling. The investigation consisted of developing computer codes to model the performance of a gas turbine, energy storage system, heat exchangers, and ancillary equipment. The performance models were combined with cost models to calculate unit capital costs and levelized energy costs for each concept. The levelized energy cost was calculated for three technologies in two locations (Minneapolis, Minnesota and Birmingham, Alabama). Precooling gas turbine inlet air with cold water supplied by an aquifer thermal energy storage system provided lower cost electricity than simply increasing the size of the turbine for meteorological and geological conditions existing in the Minneapolis vicinity. A 15 to 20% cost reduction resulted for both 0.05 and 0.2 annual operating factors. In contrast, ice storage precooling was found to be between 5 and 20% more expensive than larger gas turbines for the Minneapolis location. In Birmingham, aquifer thermal energy storage precooling was preferred at the higher capacity factor and ice storage precooling was the best option at the lower capacity factor. In both cases, the levelized cost was reduced by approximately 5% when compared to larger gas turbines.

Antoniak, Z.I.; Brown, D.R.; Drost, M.K.

1992-12-01T23:59:59.000Z

356

Gas-path leakage seal for a gas turbine  

DOE Patents (OSTI)

A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a gas turbine (such as combustor casing segments). The seal includes a generally imperforate foil-layer assemblage which is generally impervious to gas and is located in the leakage-gap. The seal also includes a cloth-layer assemblage generally enclosingly contacting the foil-layer assemblage. In one seal, the first edge of the foil-layer assemblage is left exposed, and the foil-layer assemblage resiliently contacts the first member near the first edge to reduce leakage in the "plane" of the cloth-layer assemblage under conditions which include differential thermal growth of the two members. In another seal, such leakage is reduced by having a first weld-bead which permeates the cloth-layer assemblage, is attached to the metal-foil-layer assemblage near the first edge, and unattachedly contacts the first member.

Wolfe, Christopher E. (Schenectady, NY); Dinc, Osman S. (Troy, NY); Bagepalli, Bharat S. (Schenectady, NY); Correia, Victor H. (New Lebanon, NY); Aksit, Mahmut F. (Troy, NY)

1996-01-01T23:59:59.000Z

357

Gas-path leakage seal for a gas turbine  

DOE Patents (OSTI)

A gas-path leakage seal is described for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a gas turbine (such as combustor casing segments). The seal includes a generally imperforate foil-layer assemblage which is generally impervious to gas and is located in the leakage-gap. The seal also includes a cloth-layer assemblage generally enclosingly contacting the foil-layer assemblage. In one seal, the first edge of the foil-layer assemblage is left exposed, and the foil-layer assemblage resiliently contacts the first member near the first edge to reduce leakage in the ``plane`` of the cloth-layer assemblage under conditions which include differential thermal growth of the two members. In another seal, such leakage is reduced by having a first weld-bead which permeates the cloth-layer assemblage, is attached to the metal-foil-layer assemblage near the first edge, and unattachedly contacts the first member. 4 figs.

Wolfe, C.E.; Dinc, O.S.; Bagepalli, B.S.; Correia, V.H.; Aksit, M.F.

1996-04-23T23:59:59.000Z

358

Advanced Materials for Mercury 50 Gas Turbine Combustion System  

SciTech Connect

Solar Turbines Incorporated (Solar), under cooperative agreement number DE-FC26-0CH11049, has conducted development activities to improve the durability of the Mercury 50 combustion system to 30,000 hours life and reduced life cycle costs. This project is part of Advanced Materials in the Advanced Industrial Gas Turbines program in DOE's Office of Distributed Energy. The targeted development engine was the Mercury{trademark} 50 gas turbine, which was developed by Solar under the DOE Advanced Turbine Systems program (DOE contract number DE-FC21-95MC31173). As a generator set, the Mercury 50 is used for distributed power and combined heat and power generation and is designed to achieve 38.5% electrical efficiency, reduced cost of electricity, and single digit emissions. The original program goal was 20,000 hours life, however, this goal was increased to be consistent with Solar's standard 30,000 hour time before overhaul for production engines. Through changes to the combustor design to incorporate effusion cooling in the Generation 3 Mercury 50 engine, which resulted in a drop in the combustor wall temperature, the current standard thermal barrier coated liner was predicted to have 18,000 hours life. With the addition of the advanced materials technology being evaluated under this program, the combustor life is predicted to be over 30,000 hours. The ultimate goal of the program was to demonstrate a fully integrated Mercury 50 combustion system, modified with advanced materials technologies, at a host site for a minimum of 4,000 hours. Solar was the Prime Contractor on the program team, which includes participation of other gas turbine manufacturers, various advanced material and coating suppliers, nationally recognized test laboratories, and multiple industrial end-user field demonstration sites. The program focused on a dual path development route to define an optimum mix of technologies for the Mercury 50 and future gas turbine products. For liner and injector development, multiple concepts including high thermal resistance thermal barrier coatings (TBC), oxide dispersion strengthened (ODS) alloys, continuous fiber ceramic composites (CFCC), and monolithic ceramics were evaluated before down-selection to the most promising candidate materials for field evaluation. Preliminary, component and sub-scale testing was conducted to determine material properties and demonstrate proof-of-concept. Full-scale rig and engine testing was used to validated engine performance prior to field evaluation at a Qualcomm Inc. cogeneration site located in San Diego, California. To ensure that the CFCC liners with the EBC proposed under this program would meet the target life, field evaluations of ceramic matrix composite liners in Centaur{reg_sign} 50 gas turbine engines, which had previously been conducted under the DOE sponsored Ceramic Stationary Gas Turbine program (DE-AC02-92CE40960), was continued under this program at commercial end-user sites under Program Subtask 1A - Extended CFCC Materials Durability Testing. The goal of these field demonstrations was to demonstrate significant component life, with milestones of 20,000 and 30,000 hours. Solar personnel monitor the condition of the liners at the field demonstration sites through periodic borescope inspections and emissions measurements. This program was highly successful at evaluating advanced materials and down-selecting promising solutions for use in gas turbine combustions systems. The addition of the advanced materials technology has enabled the predicted life of the Mercury 50 combustion system to reach 30,000 hours, which is Solar's typical time before overhaul for production engines. In particular, a 40 mil thick advanced Thermal Barrier Coating (TBC) system was selected over various other TBC systems, ODS liners and CFCC liners for the 4,000-hour field evaluation under the program. This advanced TBC is now production bill-of-material at various thicknesses up to 40 mils for all of Solar's advanced backside-cooled combustor liners (Centaur 50, Taurus 60,

Price, Jeffrey

2008-09-30T23:59:59.000Z

359

Advanced Materials for Mercury 50 Gas Turbine Combustion System  

DOE Green Energy (OSTI)

Solar Turbines Incorporated (Solar), under cooperative agreement number DE-FC26-0CH11049, has conducted development activities to improve the durability of the Mercury 50 combustion system to 30,000 hours life and reduced life cycle costs. This project is part of Advanced Materials in the Advanced Industrial Gas Turbines program in DOE's Office of Distributed Energy. The targeted development engine was the Mercury{trademark} 50 gas turbine, which was developed by Solar under the DOE Advanced Turbine Systems program (DOE contract number DE-FC21-95MC31173). As a generator set, the Mercury 50 is used for distributed power and combined heat and power generation and is designed to achieve 38.5% electrical efficiency, reduced cost of electricity, and single digit emissions. The original program goal was 20,000 hours life, however, this goal was increased to be consistent with Solar's standard 30,000 hour time before overhaul for production engines. Through changes to the combustor design to incorporate effusion cooling in the Generation 3 Mercury 50 engine, which resulted in a drop in the combustor wall temperature, the current standard thermal barrier coated liner was predicted to have 18,000 hours life. With the addition of the advanced materials technology being evaluated under this program, the combustor life is predicted to be over 30,000 hours. The ultimate goal of the program was to demonstrate a fully integrated Mercury 50 combustion system, modified with advanced materials technologies, at a host site for a minimum of 4,000 hours. Solar was the Prime Contractor on the program team, which includes participation of other gas turbine manufacturers, various advanced material and coating suppliers, nationally recognized test laboratories, and multiple industrial end-user field demonstration sites. The program focused on a dual path development route to define an optimum mix of technologies for the Mercury 50 and future gas turbine products. For liner and injector development, multiple concepts including high thermal resistance thermal barrier coatings (TBC), oxide dispersion strengthened (ODS) alloys, continuous fiber ceramic composites (CFCC), and monolithic ceramics were evaluated before down-selection to the most promising candidate materials for field evaluation. Preliminary, component and sub-scale testing was conducted to determine material properties and demonstrate proof-of-concept. Full-scale rig and engine testing was used to validated engine performance prior to field evaluation at a Qualcomm Inc. cogeneration site located in San Diego, California. To ensure that the CFCC liners with the EBC proposed under this program would meet the target life, field evaluations of ceramic matrix composite liners in Centaur{reg_sign} 50 gas turbine engines, which had previously been conducted under the DOE sponsored Ceramic Stationary Gas Turbine program (DE-AC02-92CE40960), was continued under this program at commercial end-user sites under Program Subtask 1A - Extended CFCC Materials Durability Testing. The goal of these field demonstrations was to demonstrate significant component life, with milestones of 20,000 and 30,000 hours. Solar personnel monitor the condition of the liners at the field demonstration sites through periodic borescope inspections and emissions measurements. This program was highly successful at evaluating advanced materials and down-selecting promising solutions for use in gas turbine combustions systems. The addition of the advanced materials technology has enabled the predicted life of the Mercury 50 combustion system to reach 30,000 hours, which is Solar's typical time before overhaul for production engines. In particular, a 40 mil thick advanced Thermal Barrier Coating (TBC) system was selected over various other TBC systems, ODS liners and CFCC liners for the 4,000-hour field evaluation under the program. This advanced TBC is now production bill-of-material at various thicknesses up to 40 mils for all of Solar's advanced backside-cooled combustor liners (Centaur 50, Taurus 60, Mars 100, Taurus 70,

Price, Jeffrey

2008-09-30T23:59:59.000Z

360

Diode laser measurement of H?O, CO?, and temperature in gas turbine exhaust through the application of wavelength modulation spectroscopy  

E-Print Network (OSTI)

sensor for measurements of gas turbine exhaust temperature."O, CO 2 , and Temperature in Gas Turbine Exhaust through theview of UCSD power plant gas turbine systems 31

Leon, Marco E.

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Advanced Turbine Systems Program: Conceptual design and product development. Quarterly status report, May--July 1994  

Science Conference Proceedings (OSTI)

The goal of the overall Advanced Turbine Systems (ATS) program is to develop and commercialize ultrahigh-efficiency gas-turbine-based power systems for utility and industrial applications. This contract will complete conceptual design and begin component testing for a utility-scale power system having 60% efficiency. Progress reports are presented for the following tasks: selection of natural gas-fired advance turbine systems (GFATS); selection of coal-fired advanced turbine systems (CFATS); market study; system definition and analysis; and design and test of critical components.

Not Available

1994-09-14T23:59:59.000Z

362

State-of-the-art gas turbine and steam turbine power plant  

SciTech Connect

A state-of-the-art power plant in which the heat from solid or low quality fuels is utilized to heat indirectly a motive stream composition of a mixture of steam and gases to drive a gas turbine. The thermal energy from the burning of the solid or low quality fuels is also utilized to generate steam which powers a steam turbine. Excess steam may be generated to be utilized as process steam.

Willyoung, D. M.; Anand, A. K.

1985-03-12T23:59:59.000Z

363

Anti-polluting power plant using compressors and gas turbines  

SciTech Connect

An electric power generating plant includes at least two compressors having matched operating characteristics, alternators and turbines and boilers having combustion chambers connected to the turbines. The compressors, alternators and turbines are operatively interconnected such that during no power demand periods the compressors are driven in a series arrangement by the alternators, functioning as electric motors, to store a supply of pressurized air in an air storage tank, and during normal and peak power demand periods the turbines, supplied by the combustion chambers of the boilers, drive the compressors, functioning in parallel relationship, which feed respective ones of the boilers with enriched air and a gas recycled after expansion by one of the turbines. During the normal and peak power demand periods pressurized air previously stored in the air storage tank by the compressors is fed to the combustion chamber of one of the boilers.

Rigollot, G.A.

1977-09-20T23:59:59.000Z

364

Interface between a gas turbine and PFBC  

SciTech Connect

First-generation pressurized fluidized bed combustion (PFBC) technology has potential advantages that include lower capital cost, improved environmental performance, shorter lead times, higher efficiency, and enhanced fuel flexibility. The objective of this program is to ensure that combustion turbine designs stay current with PFBC technology, specifically to ensure that the Westinghouse 251B12 combustion turbine is suitable for demonstration phases of this technology as it progresses toward commercial deployment. This paper presents the preliminary design of system interfaces that permit combining a PFBC and a Westinghouse 251B12 combustion turbine.

Bannister, R.L.; McGuigan, A.W.; Christenson, J.A.; Howell, I.L.; Marson, E.; Post, M.V.; Risley, R.P.; Vota, T.L.

1993-11-01T23:59:59.000Z

365

Gas turbine bucket wall thickness control  

DOE Patents (OSTI)

A core for use in casting a turbine bucket including serpentine cooling passages is divided into two pieces including a leading edge core section and a trailing edge core section. Wall thicknesses at the leading edge and the trailing edge of the turbine bucket can be controlled independent of each other by separately positioning the leading edge core section and the trailing edge core section in the casting die. The controlled leading and trailing edge thicknesses can thus be optimized for efficient cooling, resulting in more efficient turbine operation.

Stathopoulos, Dimitrios (Glenmont, NY); Xu, Liming (Greenville, SC); Lewis, Doyle C. (Greer, SC)

2002-01-01T23:59:59.000Z

366

Indirect-fired gas turbine dual fuel cell power cycle  

DOE Patents (OSTI)

A fuel cell and gas turbine combined cycle system which includes dual fuel cell cycles combined with a gas turbine cycle wherein a solid oxide fuel cell cycle operated at a pressure of between 6 to 15 atms tops the turbine cycle and is used to produce CO.sub.2 for a molten carbonate fuel cell cycle which bottoms the turbine and is operated at essentially atmospheric pressure. A high pressure combustor is used to combust the excess fuel from the topping fuel cell cycle to further heat the pressurized gas driving the turbine. A low pressure combustor is used to combust the excess fuel from the bottoming fuel cell to reheat the gas stream passing out of the turbine which is used to preheat the pressurized air stream entering the topping fuel cell before passing into the bottoming fuel cell cathode. The CO.sub.2 generated in the solid oxide fuel cell cycle cascades through the system to the molten carbonate fuel cell cycle cathode.

Micheli, Paul L. (Sacramento, CA); Williams, Mark C. (Morgantown, WV); Sudhoff, Frederick A. (Morgantown, WV)

1996-01-01T23:59:59.000Z

367

Repowering reheat units with gas turbines: Final report. [Adding gas turbines and heat recovery to present units  

SciTech Connect

Although conventional repowering on nonreheat units replaces existing boilers with gas turbines and heat recovery steam generators, options investigated by Virginia Power use gas turbine waste heat to supplement, rather than replace, the output of existing steam generators. Virginia Power's experience in considering feedwater heater repowering (FHR) and hot windbox repowering (HWR) as repowering options is described here. Studying five plants identified as potential repowering candidates, investigators first evaluated FHR, which uses a gas turbine generator set equipped with an economizer to heat boiler feedwater. This reduces the steam turbine extraction flow and increases the steam turbine capacity. HWR, the second method investigated, routes the hot, relatively oxygen-rich exhaust flow from a gas turbine into the boiler windbox, eliminating the need for an air preheater. A boiler stack gas cooler then heats feedwater, again increasing turbine capacity by reducing extraction steam flow requirements for feedwater heating. FHR provided the lowest installed cost, especially at Mount Storm unit 3, a coal-fired minemouth plant. Use of a gas turbine to heat feedwater at this plant resulted in a $523/kW (1985) installed cost and 124-MWe unit capacity increase at a design incremental heat rate of 8600 Btu/kWh. FHR at Mount Storm units 1, 2, and 3 cost less overall than installation and operation of a new combined cycle. Although the findings and conclusions in this series of repowering reports are largely unique to the individual plants, units, and applications studied, other utilities performing repowering studies can draw on the types of consideration entertained, alternatives examined, and factors and rationale leading to rejection or acceptance of a given repowering approach. 12 figs., 12 tabs.

Rives, J.D.; Catina, J.

1987-05-01T23:59:59.000Z

368

Airfoil seal system for gas turbine engine  

SciTech Connect

A turbine airfoil seal system of a turbine engine having a seal base with a plurality of seal strips extending therefrom for sealing gaps between rotational airfoils and adjacent stationary components. The seal strips may overlap each other and may be generally aligned with each other. The seal strips may flex during operation to further reduce the gap between the rotational airfoils and adjacent stationary components.

Diakunchak, Ihor S.

2013-06-25T23:59:59.000Z

369

Gas turbine operating and maintenance experience in Saudi Arabia  

SciTech Connect

Operation and maintenance of the gas turbines in Saudi Arabia, utilized to drive crude oil shipping pumps and process gas compressors, are discussed. Operation on wet, sour gas is taken into account, emphasizing the hot corrosion problem and the approaches taken to solve it. Intake air filtration is examined, indicating that as a result of an in depth study it was decided to retrofit the turbines with a three stage air filtration system. The methods for applying corrosion resistant coatings to the blades are considered, as are the overhaul logistics and the repair procedures.

Anderson, A.W.

1979-03-01T23:59:59.000Z

370

Advanced turbine systems program conceptual design and product development. Quarterly report, August--October 1994  

SciTech Connect

This is a quarterly report on the Westinghouse Electric Corporation Advanced Turbine Systems Program--conceptual design and product development. The topics of the report include the management plan, National Energy Policy Act, selection of natural gas-fired advanced turbine systems, selection of coal-fired advanced turbine systems, market study, systems definition and analysis, design and test of critical components, and plans for the next reporting period.

1994-12-01T23:59:59.000Z

371

Wind Turbine Productivity and Development in Iran  

Science Conference Proceedings (OSTI)

This paper presents an overview of the status of wind energy productivity and development issues in Iran. It also presents a summary of the present global work on offshore energy, including the most recent works as well as potential offshore wind energy ... Keywords: Iran, development, offshore, turbine, wind

Ali Mostafaeipour; Saeid Abesi

2010-03-01T23:59:59.000Z

372

Gas Turbine Combustor Performance on Synthetic Fuels, Volume 1  

Science Conference Proceedings (OSTI)

This volume presents complete data from a test program to determine the behavior of several coal-derived and shale-derived liquid fuels when burned in state-of-the-art combustion turbine engines. The methods used in analyzing the test results are described. The heat transfer effects on gas turbine combustors are discussed, as well as NOx and other emissions effects and predictions.

1980-11-01T23:59:59.000Z

373

Low-pressure-ratio regenerative exhaust-heated gas turbine  

SciTech Connect

A design study of coal-burning gas-turbine engines using the exhaust-heated cycle and state-of-the-art components has been completed. In addition, some initial experiments on a type of rotary ceramic-matrix regenerator that would be used to transfer heat from the products of coal combustion in the hot turbine exhaust to the cool compressed air have been conducted. Highly favorable results have been obtained on all aspects on which definite conclusions could be drawn.

Tampe, L.A.; Frenkel, R.G.; Kowalick, D.J.; Nahatis, H.M.; Silverstein, S.M.; Wilson, D.G.

1991-01-01T23:59:59.000Z

374

Development of standardized air-blown coal gasifier/gas turbine concepts for future electric power systems. Volume 1, Final report  

Science Conference Proceedings (OSTI)

The objective of this study is to develop standardized air blown fixed bed gasification hot gas cleanup integrated gasifier combined cycle (IGCC) systems.

Sadowski, R.S.; Brown, M.J.; Hester, J.C.; Harriz, J.T.; Ritz, G.J.

1991-02-01T23:59:59.000Z

375

Advanced Turbine Systems Program -- Conceptual design and product development. Quarterly report, August 1--October 31, 1995  

SciTech Connect

The objective of Phase 2 of the Advanced Turbine Systems (ATS) Program is to provide the conceptual design and product development plan for an ultra high efficiency, environmentally superior and cost competitive industrial gas turbine system to be commercialized by the year 2000. A secondary objective is to begin early development of technologies critical to the success of ATS. This quarterly report, addresses only Task 4, conversion of a gas turbine to a coal-fired gas turbine, which was completed during the quarter and the nine subtasks included in Task 8, design and test of critical components. These nine subtasks address six ATS technologies as follows: catalytic combustion; recuperator; autothermal fuel reformer; high temperature turbine disc; advanced control system (MMI); and ceramic materials.

1995-12-31T23:59:59.000Z

376

Laboratory Investigations of a Low-Swirl Injector with H2 and CH4 at Gas Turbine Conditions  

E-Print Network (OSTI)

Journal of Engineering for Gas Turbines and Power, 130 C. K.Journal of Engineering for Gas Turbines and Power, 130 (2) (of Engineering for Gas Turbines and Power-Transactions of

Cheng, R. K.

2009-01-01T23:59:59.000Z

377

High temperature gas-cooled reactor: gas turbine application study  

SciTech Connect

The high-temperature capability of the High-Temperature Gas-Cooled Reactor (HTGR) is a distinguishing characteristic which has long been recognized as significant both within the US and within foreign nuclear energy programs. This high-temperature capability of the HTGR concept leads to increased efficiency in conventional applications and, in addition, makes possible a number of unique applications in both electrical generation and industrial process heat. In particular, coupling the HTGR nuclear heat source to the Brayton (gas turbine) Cycle offers significant potential benefits to operating utilities. This HTGR-GT Application Study documents the effort to evaluate the appropriateness of the HTGR-GT as an HTGR Lead Project. The scope of this effort included evaluation of the HTGR-GT technology, evaluation of potential HTGR-GT markets, assessment of the economics of commercial HTGR-GT plants, and evaluation of the program and expenditures necessary to establish HTGR-GT technology through the completion of the Lead Project.

Not Available

1980-12-01T23:59:59.000Z

378

Flow Integrating Section for a Gas Turbine Engine in Which Turbine Blades are Cooled by Full Compressor Flow  

SciTech Connect

Routing of full compressor flow through hollow turbine blades achieves unusually effective blade cooling and allows a significant increase in turbine inlet gas temperature and, hence, engine efficiency. The invention, ''flow integrating section'' alleviates the turbine dissipation of kinetic energy of air jets leaving the hollow blades as they enter the compressor diffuser.

Steward, W. Gene

1999-11-14T23:59:59.000Z

379

Flow Integrating Section for a Gas Turbine Engine in Which Turbine Blades are Cooled by Full Compressor Flow  

DOE Green Energy (OSTI)

Routing of full compressor flow through hollow turbine blades achieves unusually effective blade cooling and allows a significant increase in turbine inlet gas temperature and, hence, engine efficiency. The invention, ''flow integrating section'' alleviates the turbine dissipation of kinetic energy of air jets leaving the hollow blades as they enter the compressor diffuser.

Steward, W. Gene

1999-11-14T23:59:59.000Z

380

Gas turbine power plant with supersonic shock compression ramps  

SciTech Connect

A gas turbine engine. The engine is based on the use of a gas turbine driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. The supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdynamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by use of a lean pre-mix system, a pre-swirl compressor, and a bypass stream to bleed a portion of the gas after passing through the pre-swirl compressor to the combustion gas outlet. Use of a stationary low NOx combustor provides excellent emissions results.

Lawlor, Shawn P. (Bellevue, WA); Novaresi, Mark A. (San Diego, CA); Cornelius, Charles C. (Kirkland, WA)

2008-10-14T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Compatibility of gas turbine materials with steam cooling  

DOE Green Energy (OSTI)

Objective is to investigate performance of gas turbine materials in steam environment and evaluate remedial measures for alleviating the severity of the problem. Three superalloys commonly used in gas turbines were exposed to 3 steam environments containing different impurity levels for 2 to 6 months. Results: Cr2O3-forming alloys containing 1-4% Al such as IN 738 are susceptible to heavy internal oxidation of Al. High Al (>5%) alloys in which continuous Al2O3 scale can be formed, may not be susceptible to such attack. Deposition of salts from steam will accentuate hot corrosion problems. Alloys with higher Cr content such as X-45 are generally less prone to hot corrosion. The greater damage observed in IN 617 make this alloy less attractive for gas turbines with steam cooling. Electrochemical impedance spectroscopy is a good nondestructive method to evaluate microstructural damage.

Desai, V.; Tamboli, D.; Patel, Y. [University of Central Florida, Orlando, FL (United States). Dept. of Mechanical and Aerospace Engineering

1995-12-31T23:59:59.000Z

382

Segmented inlet nozzle for gas turbine, and methods of installation  

SciTech Connect

A gas turbine nozzle guide vane assembly is formed of individual arcuate nozzle segments. The arcuate nozzle segments are elastically joined to each other to form a complete ring, with edges abutted to prevent leakage. The resultant nozzle ring is included within the overall gas turbine stationary structure and secured by a mounting arrangement which permits relative radial movement at both the inner and outer mountings. A spline-type outer mounting provides circumferential retention. A complete rigid nozzle ring with freedom to "float" radially results. Specific structures are disclosed for the inner and outer mounting arrangements. A specific tie-rod structure is also disclosed for elastically joining the individual nozzle segments. Also disclosed is a method of assembling the nozzle ring subassembly-by-subassembly into a gas turbine employing temporary jacks.

Klompas, Nicholas (Scotia, NY)

1985-01-01T23:59:59.000Z

383

Indirect-fired gas turbine bottomed with fuel cell  

DOE Patents (OSTI)

An indirect-heated gas turbine cycle is bottomed with a fuel cell cycle with the heated air discharged from the gas turbine being directly utilized at the cathode of the fuel cell for the electricity-producing electrochemical reaction occurring within the fuel cell. The hot cathode recycle gases provide a substantial portion of the heat required for the indirect heating of the compressed air used in the gas turbine cycle. A separate combustor provides the balance of the heat needed for the indirect heating of the compressed air used in the gas turbine cycle. Hot gases from the fuel cell are used in the combustor to reduce both the fuel requirements of the combustor and the NOx emissions therefrom. Residual heat remaining in the air-heating gases after completing the heating thereof is used in a steam turbine cycle or in an absorption refrigeration cycle. Some of the hot gases from the cathode can be diverted from the air-heating function and used in the absorption refrigeration cycle or in the steam cycle for steam generating purposes.

Micheli, Paul L. (Morgantown, WV); Williams, Mark C. (Morgantown, WV); Parsons, Edward L. (Morgantown, WV)

1995-01-01T23:59:59.000Z

384

Indirect-fired gas turbine bottomed with fuel cell  

DOE Patents (OSTI)

An indirect-heated gas turbine cycle is bottomed with a fuel cell cycle with the heated air discharged from the gas turbine being directly utilized at the cathode of the fuel cell for the electricity-producing electrochemical reaction occurring within the fuel cell. The hot cathode recycle gases provide a substantial portion of the heat required for the indirect heating of the compressed air used in the gas turbine cycle. A separate combustor provides the balance of the heat needed for the indirect heating of the compressed air used in the gas turbine cycle. Hot gases from the fuel cell are used in the combustor to reduce both the fuel requirements of the combustor and the NOx emissions therefrom. Residual heat remaining in the air-heating gases after completing the heating thereof is used in a steam turbine cycle or in an absorption refrigeration cycle. Some of the hot gases from the cathode can be diverted from the air-heating function and used in the absorption refrigeration cycle or in the steam cycle for steam generating purposes.

Micheli, P.L.; Williams, M.C.; Parsons, E.L.

1993-12-31T23:59:59.000Z

385

Indirect-fired gas turbine bottomed with fuel cell  

DOE Patents (OSTI)

An indirect-heated gas turbine cycle is bottomed with a fuel cell cycle with the heated air discharged from the gas turbine being directly utilized at the cathode of the fuel cell for the electricity-producing electrochemical reaction occurring within the fuel cell. The hot cathode recycle gases provide a substantial portion of the heat required for the indirect heating of the compressed air used in the gas turbine cycle. A separate combustor provides the balance of the heat needed for the indirect heating of the compressed air used in the gas turbine cycle. Hot gases from the fuel cell are used in the combustor to reduce both the fuel requirements of the combustor and the NOx emissions therefrom. Residual heat remaining in the air-heating gases after completing the heating thereof is used in a steam turbine cycle or in an absorption refrigeration cycle. Some of the hot gases from the cathode can be diverted from the air-heating function and used in the absorption refrigeration cycle or in the steam cycle for steam generating purposes. 1 fig.

Micheli, P.L.; Williams, M.C.; Parsons, E.L.

1995-09-12T23:59:59.000Z

386

Industrial Gas Turbine Engine Catalytic Pilot Combustor-Prototype Testing  

SciTech Connect

PCI has developed and demonstrated its Rich Catalytic Lean-burn (RCL®) technology for industrial and utility gas turbines to meet DOEâ??s goals of low single digit emissions. The technology offers stable combustion with extended turndown allowing ultra-low emissions without the cost of exhaust after-treatment and further increasing overall efficiency (avoidance of after-treatment losses). The objective of the work was to develop and demonstrate emission benefits of the catalytic technology to meet strict emissions regulations. Two different applications of the RCL® concept were demonstrated: RCL® catalytic pilot and Full RCL®. The RCL® catalytic pilot was designed to replace the existing pilot (a typical source of high NOx production) in the existing Dry Low NOx (DLN) injector, providing benefit of catalytic combustion while minimizing engine modification. This report discusses the development and single injector and engine testing of a set of T70 injectors equipped with RCL® pilots for natural gas applications. The overall (catalytic pilot plus main injector) program NOx target of less than 5 ppm (corrected to 15% oxygen) was achieved in the T70 engine for the complete set of conditions with engine CO emissions less than 10 ppm. Combustor acoustics were low (at or below 0.1 psi RMS) during testing. The RCL® catalytic pilot supported engine startup and shutdown process without major modification of existing engine controls. During high pressure testing, the catalytic pilot showed no incidence of flashback or autoignition while operating over a wide range of flame temperatures. In applications where lower NOx production is required (i.e. less than 3 ppm), in parallel, a Full RCL® combustor was developed that replaces the existing DLN injector providing potential for maximum emissions reduction. This concept was tested at industrial gas turbine conditions in a Solar Turbines, Incorporated high-pressure (17 atm.) combustion rig and in a modified Solar Turbines, Incorporated Saturn engine rig. High pressure single-injector rig and modified engine rig tests demonstrated NOx less than 2 ppm and CO less than 10 ppm over a wide flame temperature operating regime with low combustion noise (<0.15% peak-to-peak). Minimum NOx for the optimized engine retrofit Full RCL® designs was less than 1 ppm with CO emissions less than 10 ppm. Durability testing of the substrate and catalyst material was successfully demonstrated at pressure and temperature showing long term stable performance of the catalytic reactor element. Stable performance of the reactor element was achieved when subjected to durability tests (>5000 hours) at simulated engine conditions (P=15 atm, Tin=400C/750F.). Cyclic tests simulating engine trips was also demonstrated for catalyst reliability. In addition to catalyst tests, substrate oxidation testing was also performed for downselected substrate candidates for over 25,000 hours. At the end of the program, an RCL® catalytic pilot system has been developed and demonstrated to produce NOx emissions of less than 3 ppm (corrected to 15% O2) for 100% and 50% load operation in a production engine operating on natural gas. In addition, a Full RCL® combustor has been designed and demonstrated less than 2 ppm NOx (with potential to achieve 1 ppm) in single injector and modified engine testing. The catalyst/substrate combination has been shown to be stable up to 5500 hrs in simulated engine conditions.

Shahrokh Etemad; Benjamin Baird; Sandeep Alavandi; William Pfefferle

2009-09-30T23:59:59.000Z

387

Slag processing system for direct coal-fired gas turbines  

SciTech Connect

Direct coal-fired gas turbine systems and methods for their operation are provided by this invention. The systems include a primary combustion compartment coupled to an impact separator for removing molten slag from hot combustion gases. Quenching means are provided for solidifying the molten slag removed by the impact separator, and processing means are provided forming a slurry from the solidified slag for facilitating removal of the solidified slag from the system. The released hot combustion gases, substantially free of molten slag, are then ducted to a lean combustion compartment and then to an expander section of a gas turbine.

Pillsbury, Paul W. (Winter Springs, FL)

1990-01-01T23:59:59.000Z

388

High Efficiency Gas Turbines Overcome Cogeneration Project Feasibility Hurdles  

E-Print Network (OSTI)

Cogeneration project feasibility sometimes fails during early planning stages due to an electrical cycle efficiency which could be improved through the use of aeroderivative gas turbine engines. The aeroderivative engine offers greater degrees of freedom in terms of power augmentation through steam injection, NOx control without selective catalytic reduction, (SCR), reduced down time during maintenance and dispatchability. Other factors influencing enhanced aeroderivative economics are complete generator set packaging at the factory and full string testing before the delivery. A wide variety of hosts, including institutions, utilities, municipalities and industrial factories are observing that their cogeneration projects move faster by implementing aeroderivative gas turbine generation packages.

King, J.

1988-09-01T23:59:59.000Z

389

Biennial Assessment of the Fifth Power Plan Gas Turbine Power Plant Planning Assumptions  

E-Print Network (OSTI)

from Stationary Gas Turbines. STAFF RECOMMENDATION Energy Commission staff reviewed the petition regarding Nitrogen Oxides from Stationary Gas Turbines. STAFF RECOMMENDATION Energy Commission staff CALIFORNIA ENERGY COMMISSION 1516 NINTH STREET SACRAMENTO. CA 95814-5512 STATE OF CALIFORNIA ENERGY

390

Materials and Component Development for Advanced Turbine Systems  

SciTech Connect

In order to meet the 2010-2020 DOE Fossil Energy goals for Advanced Power Systems, future oxy-fuel and hydrogen-fired turbines will need to be operated at higher temperatures for extended periods of time, in environments that contain substantially higher moisture concentrations in comparison to current commercial natural gas-fired turbines. Development of modified or advanced material systems, combined with aerothermal concepts are currently being addressed in order to achieve successful operation of these land-based engines. To support the advanced turbine technology development, the National Energy Technology Laboratory (NETL) has initiated a research program effort in collaboration with the University of Pittsburgh (UPitt), and West Virginia University (WVU), working in conjunction with commercial material and coating suppliers as Howmet International and Coatings for Industry (CFI), and test facilities as Westinghouse Plasma Corporation (WPC) and Praxair, to develop advanced material and aerothermal technologies for use in future oxy-fuel and hydrogen-fired turbine applications. Our program efforts and recent results are presented.

Alvin, M.A.; Pettit, F.; Meier, G.; Yanar, N.; Chyu, M.; Mazzotta, D.; Slaughter, W.; Karaivanov, V.; Kang, B.; Feng, C.; Chen, R.; Fu, T-C.

2008-10-01T23:59:59.000Z

391

Removal of Dioxin Contamination for Gas Turbine Generator Set Repair  

SciTech Connect

Decontamination projects are typically undertaken in the interest of reducing disposal costs. This goal can be achieved because decontamination concentrates the contaminant into a smaller volume or changes its form so that a lower cost disposal technology becomes available. Less frequently, decontamination adds value back to the fouled structure or contaminated piece of equipment. This removal of dioxins from a gas turbine generator set is one of the latter cases. A multi-million dollar piece of equipment could have been destined for the scrap pile. Instead, an innovative, non-destructive decontamination technology, developed under EPA and DOE demonstration programs has was employed so that the set could repaired and put back into service. The TechXtractchemical decontamination technology reduced surface dioxin / furan concentrations from as high as 24,000 ng / m2 to less than 25 ng / m2 and below detection limits.

Fay, W. S.; Borah, R.E.

2003-02-25T23:59:59.000Z

392

Gas turbine premixer with internal cooling  

SciTech Connect

A system that includes a turbine fuel nozzle comprising an air-fuel premixer. The air-fuel premixed includes a swirl vane configured to swirl fuel and air in a downstream direction, wherein the swirl vane comprises an internal coolant path from a downstream end portion in an upstream direction through a substantial length of the swirl vane.

York, William David; Johnson, Thomas Edward; Lacy, Benjamin Paul; Stevenson, Christian Xavier

2012-12-18T23:59:59.000Z

393

DOE Selects Ten Projects to Conduct Advanced Turbine Technology...  

NLE Websites -- All DOE Office Websites (Extended Search)

and barriers that must be overcome to enable the development of advanced gas turbines and gas turbine-based systems that will operate reliably, cleanly, efficiently, and cost...

394

Advanced coal-fueled industrial cogeneration gas turbine system. Annual report, June 1990--June 1991  

SciTech Connect

Advances in coal-fueled gas turbine technology over the past few years, together with recent DOE-METC sponsored studies, have served to provide new optimism that the problems demonstrated in the past can be economically resolved and that the coal-fueled gas turbine can ultimately be the preferred system in appropriate market application sectors. The objective of the Solar/METC program is to prove the technical, economic, and environmental feasibility of a coal-fired gas turbine for cogeneration applications through tests of a Centaur Type H engine system operated on coal fuel throughout the engine design operating range. The five-year program consists of three phases, namely: (1) system description; (2) component development; (3) prototype system verification. A successful conclusion to the program will initiate a continuation of the commercialization plan through extended field demonstration runs.

LeCren, R.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; Wen, C.S.

1991-07-01T23:59:59.000Z

395

Coal/biomass fuels and the gas turbine: Utilization of solid fuels and their derivatives  

Science Conference Proceedings (OSTI)

This paper discusses key design and development issues in utilizing coal and other solid fuels in gas turbines. These fuels may be burned in raw form or processed to produce liquids or gases in more or less refined forms. The use of such fuels in gas turbines requires resolution of technology issues which are of little or no consequence for conventional natural gas and refined oil fuels. For coal, these issues are primarily related to the solid form in which coal is naturally found and its high ash and contaminant levels. Biomass presents another set of issues similar to those of coal. Among the key areas discussed are effects of ash and contaminant level on deposition, corrosion, and erosion of turbine hot parts, with particular emphasis on deposition effects.

DeCorso, M. [Power Tech Associates, Inc., Paramus, NJ (United States); Newby, R. [Westinghouse Electric Corp., Pittsburgh, PA (United States); Anson, D. [Battelle, Columbus, OH (United States); Wenglarz, R. [Allison Engine Co., Indianapolis, IN (United States); Wright, I. [Oak Ridge National Lab., TN (United States)

1996-06-01T23:59:59.000Z

396

Experience with offshore gas turbine intake filter systems from a practical viewpoint  

SciTech Connect

Since the widespread adoption of gas turbines as the main power sources on offshore platforms throughout the world the special problems associated with the filtration of the air entering such engines have naturally received some attention. A number of papers on the subject have been presented to ASME Gas Turbine Conferences through the years as well as at other similar gatherings and most of these included broadly similar assessments of the offshore environment, particularly in respect of salt, as well as the general problems faced by gas turbine filtration systems on offshore installations. Several papers have sought to extol the virtues of one or other type of filter system and it is this aspect of the subject where there has been less than total unanimity. This paper attempts to complement the earlier presentations by discussing the practical experiences of one particular filter manufacturer over the past fifteen years, commenting on some of the conclusions reached and reflecting on possible future developments.

Shackell, J.

1986-01-01T23:59:59.000Z

397

Nickel-Based Superalloy Welding Practices for Industrial Gas Turbine Applications M.B. Henderson  

E-Print Network (OSTI)

1 Nickel-Based Superalloy Welding Practices for Industrial Gas Turbine Applications M.B. Henderson and reduced costs for industrial gas turbine engines demands extended use of high strength-high temperature superalloys are used within the industrial gas turbine (IGT) engine manufacturing industry, specifically

Cambridge, University of

398

The Hybrid Solid Oxide Fuel Cell (SOFC) and Gas Turbine (GT) Systems Steady State Modeling  

E-Print Network (OSTI)

The Hybrid Solid Oxide Fuel Cell (SOFC) and Gas Turbine (GT) Systems Steady State Modeling Penyarat plants offer high cycle efficiencies. In this work a hybrid solid oxide fuel cell and gas turbine power, Gas turbine, Hybrid, Solid Oxide Fuel Cell hal-00703135,version1-31May2012 Author manuscript

Paris-Sud XI, Université de

399

LES of an ignition sequence in a gas turbine M. Boileau a,, G. Staffelbach a  

E-Print Network (OSTI)

LES of an ignition sequence in a gas turbine engine M. Boileau a,, G. Staffelbach a , B. CuenotTurbomeca (SAFRAN group), Bordes, France Abstract Being able to ignite or reignite a gas turbine engine in a cold including 18 burners. This geometry corresponds to a real gas turbine chamber. Massively parallel computing

400

Heterogeneous reactions in aircraft gas turbine engines R. C. Brown and R. C. Miake-Lye  

E-Print Network (OSTI)

Heterogeneous reactions in aircraft gas turbine engines R. C. Brown and R. C. Miake-Lye Aerodyne to estimate the maximum effect of heterogeneous reactions on trace species evolution in aircraft gas turbines species emissions from gas turbine engines are of interest because of environmental and human health

Waitz, Ian A.

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

CONTROL ISSUES IN THE DESIGN OF A GAS TURBINE CYCLE FOR CO2 CAPTURE  

E-Print Network (OSTI)

CONTROL ISSUES IN THE DESIGN OF A GAS TURBINE CYCLE FOR CO2 CAPTURE Query Sheet Q1: AU: short title OF A GAS TURBINE CYCLE FOR CO2 CAPTURE Lars Imsland, Dagfinn Snarheim, and Bjarne A. Foss Department-closed / gas turbine cycle for capture. Some control strategies and their interaction with the process design

Foss, Bjarne A.

402

Lean Blow-Out Prediction in Gas Turbine Combustors Using Symbolic Time Series Analysis  

E-Print Network (OSTI)

Lean Blow-Out Prediction in Gas Turbine Combustors Using Symbolic Time Series Analysis Achintya of lean blowout in gas turbine combustors based on symbolic analysis of time series data from optical. For the purpose of detecting lean blowout in gas turbine combustors, the state probability vector obtained

Ray, Asok

403

Active NOX Control of Cogen Gas Turbine Exhaust using a Nonlinear Feed Forward with Cascade Architecture  

E-Print Network (OSTI)

Active NOX Control of Cogen Gas Turbine Exhaust using a Nonlinear Feed Forward with Cascade control, cogeneration, gas turbine, model based control, feed forward, cascade ABSTRACT Presented is a model based strategy for controlling the NOX concentration of natural gas turbine emissions

Cooper, Doug

404

A review of biomass integrated-gasifier/gas turbine combined cycle technology and its  

E-Print Network (OSTI)

A review of biomass integrated-gasifier/gas turbine combined cycle technology and its application Copersucar, CP 162, Piracicaba, SP ­ Brazil ­ 13400-970 Biomass integrated-gasifier/gas turbine combined-from-sugarcane program. 1. Introduction The biomass integrated-gasifier/gas turbine combined cy- cle (BIG

405

A comparison between the performance of different silencer designs for gas turbine exhaust systems  

E-Print Network (OSTI)

A comparison between the performance of different silencer designs for gas turbine exhaust systems in more specialist applications, such as the exhaust systems of gas turbines, different silencer experiments are carried out with the aim of investigating performance of silencers used on gas turbines

Paris-Sud XI, Université de

406

DESIGN OF SMALL SCALE GAS TURBINE SYSTEMS FOR UNMANNED-AERIAL VEHICLES  

E-Print Network (OSTI)

DESIGN OF SMALL SCALE GAS TURBINE SYSTEMS FOR UNMANNED-AERIAL VEHICLES (AERSP 597/497-K) SPRING 814 865 9871 cxc11@psu.edu Summary : The proposed course is a three-credit gas turbine design course will be evaluated against (agreed) deadlines by the instructor. A number of lecturers from the gas turbine industry

Camci, Cengiz

407

Fault detection and isolation in aircraft gas turbine engines. Part 1: underlying concept  

E-Print Network (OSTI)

307 Fault detection and isolation in aircraft gas turbine engines. Part 1: underlying concept: aircraft propulsion, gas turbine engines, fault detection and isolation, statistical pattern recognition 1 INTRODUCTION Performance and reliability of aircraft gas turbine engines gradually deteriorate over the service

Ray, Asok

408

Recognising Visual Patterns to Communicate Gas Turbine Time-Series Data  

E-Print Network (OSTI)

Recognising Visual Patterns to Communicate Gas Turbine Time-Series Data Jin Yu, Jim Hunter, Ehud analogue channels are sampled once per second and archived by the Tiger system for monitoring gas turbines that it is very important to identify such patterns in any attempt at summarisation. In the gas turbine domain

Reiter, Ehud

409

Investigating the efficiency of gas turbines in off-design operation  

SciTech Connect

Experimental data on the performance of gas turbines for eight gas turbine power plants are presented and compared for the purpose of determining the efficiency of gas turbines in off-design operation such as during start-up or at less than rated speeds. (LCL)

Ol' Khovskii, G.G.; Ol' Khovskaya, N.I.

1978-01-01T23:59:59.000Z

410

Compatibility of alternative fuels with advanced automotive gas-turbine and Stirling engines. A literature survey  

DOE Green Energy (OSTI)

The application of alternative fuels in advanced automotive gas turbine and Stirling engines is discussed on the basis of a literature survey. These alternative engines are briefly described, and the aspects that will influence fuel selection are identified. Fuel properties and combustion properties are discussed, with consideration given to advanced materials and components. Alternative fuels from petroleum, coal, oil shale, alcohol, and hydrogen are discussed, and some background is given about the origin and production of these fuels. Fuel requirements for automotive gas turbine and Stirling engines are developed, and the need for certain research efforts is discussed. Future research efforts planned at Lewis are described. 52 references.

Cairelli, J.; Horvath, D.

1981-05-01T23:59:59.000Z

411

Slag processing system for direct coal-fired gas turbines  

SciTech Connect

Direct coal-fired gas turbine systems and methods for their operation are provided by this invention. The gas turbine system includes a primary zone for burning coal in the presence of compressed air to produce hot combustion gases and debris, such as molten slag. The turbine system further includes a secondary combustion zone for the lean combustion of the hot combustion gases. The operation of the system is improved by the addition of a cyclone separator for removing debris from the hot combustion gases. The cyclone separator is disposed between the primary and secondary combustion zones and is in pressurized communication with these zones. In a novel aspect of the invention, the cyclone separator includes an integrally disposed impact separator for at least separating a portion of the molten slag from the hot combustion gases.

Pillsbury, Paul W. (Winter Springs, FL)

1990-01-01T23:59:59.000Z

412

FUEL INTERCHANGEABILITY FOR LEAN PREMIXED COMBUSTION IN GAS TURBINE ENGINES  

DOE Green Energy (OSTI)

In response to environmental concerns of NOx emissions, gas turbine manufacturers have developed engines that operate under lean, pre-mixed fuel and air conditions. While this has proven to reduce NOx emissions by lowering peak flame temperatures, it is not without its limitations as engines utilizing this technology are more susceptible to combustion dynamics. Although dependent on a number of mechanisms, changes in fuel composition can alter the dynamic response of a given combustion system. This is of particular interest as increases in demand of domestic natural gas have fueled efforts to utilize alternatives such as coal derived syngas, imported liquefied natural gas and hydrogen or hydrogen augmented fuels. However, prior to changing the fuel supply end-users need to understand how their system will respond. A variety of historical parameters have been utilized to determine fuel interchangeability such as Wobbe and Weaver Indices, however these parameters were never optimized for today’s engines operating under lean pre-mixed combustion. This paper provides a discussion of currently available parameters to describe fuel interchangeability. Through the analysis of the dynamic response of a lab-scale Rijke tube combustor operating on various fuel blends, it is shown that commonly used indices are inadequate for describing combustion specific phenomena.

Don Ferguson; Geo. A. Richard; Doug Straub

2008-06-13T23:59:59.000Z

413

Gas turbine bucket with impingement cooled platform  

SciTech Connect

In a turbine bucket having an airfoil portion and a root portion, with a substantially planar platform at an interface between the airfoil portion and root portion, a platform cooling arrangement including at least one bore in the root portion and at least one impingement cooling tube seated in the bore, the tube extending beyond the bore with an outlet in close proximity to a targeted area on an underside of the platform.

Jones, Raphael Durand (Guilderland, NY)

2002-01-01T23:59:59.000Z

414

Apparatus and methods of reheating gas turbine cooling steam and high pressure steam turbine exhaust in a combined cycle power generating system  

DOE Patents (OSTI)

In a combined cycle system having a multi-pressure heat recovery steam generator, a gas turbine and steam turbine, steam for cooling gas turbine components is supplied from the intermediate pressure section of the heat recovery steam generator supplemented by a portion of the steam exhausting from the HP section of the steam turbine, steam from the gas turbine cooling cycle and the exhaust from the HP section of the steam turbine are combined for flow through a reheat section of the HRSG. The reheated steam is supplied to the IP section inlet of the steam turbine. Thus, where gas turbine cooling steam temperature is lower than optimum, a net improvement in performance is achieved by flowing the cooling steam exhausting from the gas turbine and the exhaust steam from the high pressure section of the steam turbine in series through the reheater of the HRSG for applying steam at optimum temperature to the IP section of the steam turbine.

Tomlinson, Leroy Omar (Niskayuna, NY); Smith, Raub Warfield (Ballston Lake, NY)

2002-01-01T23:59:59.000Z

415

High temperature, low expansion, corrosion resistant ceramic and gas turbine  

DOE Patents (OSTI)

The present invention relates to ZrO.sub.2 -MgO-Al.sub.2 O.sub.3 -SiO.sub.2 ceramic materials having improved thermal stability and corrosion resistant properties. The utilization of these ceramic materials as heat exchangers for gas turbine engines is also disclosed.

Rauch, Sr., Harry W. (Lionville, PA)

1981-01-01T23:59:59.000Z

416

Serial cooling of a combustor for a gas turbine engine  

DOE Patents (OSTI)

A combustor for a gas turbine engine uses compressed air to cool a combustor liner and uses at least a portion of the same compressed air for combustion air. A flow diverting mechanism regulates compressed air flow entering a combustion air plenum feeding combustion air to a plurality of fuel nozzles. The flow diverting mechanism adjusts combustion air according to engine loading.

Abreu, Mario E. (Poway, CA); Kielczyk, Janusz J. (Escondido, CA)

2001-01-01T23:59:59.000Z

417

Development of Wind Turbines Prototyping Software Under Matlab/Simulink  

E-Print Network (OSTI)

204 1 Development of Wind Turbines Prototyping Software Under Matlab/Simulink® Through present the development of a wind turbine prototyping software under Matlab/Simulink® through and the end of 1999, around 75% of all new grid-connected wind turbines worldwide were installed in Europe [3

Paris-Sud XI, Université de

418

Solid fuel combustion system for gas turbine engine  

DOE Patents (OSTI)

A solid fuel, pressurized fluidized bed combustion system for a gas turbine engine includes a carbonizer outside of the engine for gasifying coal to a low Btu fuel gas in a first fraction of compressor discharge, a pressurized fluidized bed outside of the engine for combusting the char residue from the carbonizer in a second fraction of compressor discharge to produce low temperature vitiated air, and a fuel-rich, fuel-lean staged topping combustor inside the engine in a compressed air plenum thereof. Diversion of less than 100% of compressor discharge outside the engine minimizes the expense of fabricating and maintaining conduits for transferring high pressure and high temperature gas and incorporation of the topping combustor in the compressed air plenum of the engine minimizes the expense of modifying otherwise conventional gas turbine engines for solid fuel, pressurized fluidized bed combustion.

Wilkes, Colin (Lebanon, IN); Mongia, Hukam C. (Carmel, IN)

1993-01-01T23:59:59.000Z

419

Small gas turbines exhibit single-digit emissions in service  

Science Conference Proceedings (OSTI)

A 10 MW-class, THM 1304-10D gas turbine from MAN-GHH, equipped with dry low-NO[sub x] combustion chambers, including hybrid burners, entered service last October. The unit was installed on the Stegal long-distance natural gas pipeline from the Olbernhau compression station on the Czech border. The pipeline transmits gas from Russia to the central part of Germany. A similar compression station, featuring three THM 1304-D driven compressor packages, started commercial operation last March in the Rehden station on the Midal pipeline. A test program carried out by MAN-GHH has demonstrated that the THM 1304 gas turbine has a wide operating range with NO[sub x] emission well under TA luft limits and, at the same time, negligible CO emissions. This is accomplished by combined effect of large volume combustion chambers, optimized wall cooling and premix dry low-NO[sub x] burners. 3 figs.

Chellini, R.

1994-06-01T23:59:59.000Z

420

Turbine-meter air calibration proves accurate for gas service  

SciTech Connect

This article presents theory, laboratory verificati*on tests, and field evaluation test data that show that a well-engineered gas-turbine meter (single rotor or tandem rotors) calibrated in air has the same accuracy when operating in natural gas at the same line pressure and flow rate (or the same Reynolds number). The only exception occurs at very low flow rates during which the rotor slip due to mechanical friction is no loner negligible.

Lee, W.F.Z.

1988-04-18T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Advanced turbine systems - research and development of thermal barrier coatings technology: 2nd bimonthly report, February 1996  

Science Conference Proceedings (OSTI)

Objective of the ATS program is the development of ultra-highly efficient, environmentally superior, and cost-competitive gas turbine systems, with long, less cyclic operating profiles than aircraft gas turbine engines. Durability and performance demands of ATS can be achieved by means of thermal barrier coatings. Phase I (program plan) is complete. Phase II is in progress.

NONE

1996-02-01T23:59:59.000Z

422

Integrated operation of a pressurized fixed-bed gasifier, hot gas desulfurization system, and turbine simulator  

Science Conference Proceedings (OSTI)

The overall objective of the General Electric Hot Gas Cleanup (HGCU) Program is to develop a commercially viable technology to remove sulfur, particulates, and halogens from a high-temperature fuel gas stream using a moving bed, regenerable mixed metal oxide sorbent based process. The HGCU Program is based on the design and demonstration of the HGCU system in a test facility made up of a pilot-scale fixed bed gasifier, a HGCU system, and a turbine simulator in Schenectady, NY, at the General Electric Research and Development Center. The objectives of the turbine simulator testing are (1) to demonstrate the suitability of fuel gas processed by the HGCU system for use in state-of-the-art gas turbines firing at 2,350 F rotor inlet temperature and (2) to quantify the combustion characteristics and emissions on low-Btu fuel gas. The turbine simulator program also includes the development and operation of experimental combustors based on the rich-quench-lean concept (RQL) to minimize the conversion of ammonia and other fuel-bound nitrogen species to NO{sub x} during combustion. The HGCU system and turbine simulator have been designed to process approximately 8,000 lb/hr of low heating value fuel gas produced by the GE fixed bed gasifier. The HGCU system has utilized several mixed metal oxide sorbents, including zinc ferrite, zinc titanate, and Z-Sorb, with the objective of demonstrating good sulfur removal and mechanical attrition resistance as well as economic cost characteristics. Demonstration of halogen removal and the characterization of alkali and trace metal concentrations in the fuel gas are subordinate objectives of the overall program. This report describes the results of several long-duration pilot tests.

Bevan, S.; Ayala, R.E.; Feitelberg, A.; Furman, A.

1995-11-01T23:59:59.000Z

423

CFD modeling of a gas turbine combustor from compressor exit to turbine inlet  

SciTech Connect

Gas turbine combustor CFD modeling has become an important combustor design tool in the past few years, but CFD models are generally limited to the flow field inside the combustor liner at the diffuser/combustor annulus region. Although strongly coupled in reality, the two regions have rarely been coupled in CFD modeling. A CFD calculation for a full model combustor from compressor diffuser exit to turbine inlet is described. The coupled model accomplishes the following two main objectives: (1) implicit description of flow splits and flow conditions for openings into the combustor liner, and (2) prediction of liner wall temperatures. Conjugate heat transfer with nonluminous gas radiation (appropriate for lean, low emission combustors) is utilized to predict wall temperatures compared to the conventional approach of predicting only near wall gas temperatures. Remaining difficult issues such as generating the grid, modeling swirler vane passages, and modeling effusion cooling are also discussed.

Crocker, D.S.; Nickolaus, D.; Smith, C.E. [CFD Research Corp., Huntsville, AL (United States)

1999-01-01T23:59:59.000Z

424

Laboratory Investigations of a Low-Swirl Injector with H2 and CH4 at Gas Turbine Conditions  

E-Print Network (OSTI)

of Engineering for Gas Turbines and Power, 130 C. K. Chan,support of the U.S. DOE Turbines program is also gratefullyof Engineering for Gas Turbines and Power, 130 (2) (2008)

Cheng, R. K.

2009-01-01T23:59:59.000Z

425

Advanced gas turbine systems research. Quarterly technical progress report, April 1, 1994--June 30, 1994  

SciTech Connect

A cooperative development of gas turbines for electric power generation in USA is underway. Since the first AGTSR program manager has retired, a search for a new manager has begun. Reports during this period include membership, combustion instability white paper, and a summary paper for the ASME IGTI conference.

1994-07-01T23:59:59.000Z

426

Mod 2 Wind Turbine Development Project  

Science Conference Proceedings (OSTI)

The primary objective in the development of Mod 2 was to design a wind turbine to produce energy for less than 5 cents/kWh based on 1980 cost forecasts. The pricing method used to project the Mod 2 energy costs is the levelized fixed charge rate approach, generally accepted in the electric utility industry as a basis for relative ranking of energy alternatives. This method derives a levelized energy price necessary to recover utility's purchasing, installing, owning, operating, and maintenance costs.

None

1980-10-01T23:59:59.000Z

427

Economic Impacts of Wind Turbine Development in U.S. Counties  

E-Print Network (OSTI)

15 percent)). Cumulative wind turbine capacity installed inper capita income of wind turbine development (measured inour sample, cumulative wind turbine capacity on a per person

J., Brown

2012-01-01T23:59:59.000Z

428

Small-Scale, Biomass-Fired Gas Turbine Plants Suitable for Distributed and Mobile Power Generation  

Science Conference Proceedings (OSTI)

This study evaluated the cost-effectiveness of small-scale, biomass-fired gas turbine plants that use an indirectly-fired gas turbine cycle. Such plants were originally thought to have several advantages for distributed generation, including portability. However, detailed analysis of two designs revealed several problems that would have to be resolved to make the plants feasible and also determined that a steam turbine cycle with the same net output was more economic than the gas turbine cycle. The incre...

2007-01-19T23:59:59.000Z

429

Combustion Gas Turbine Power Enhancement by Refrigeration of Inlet Air  

E-Print Network (OSTI)

Combustion gas turbines have gained widespread acceptance for mechanical drive and power generation applications. One key drawback of a combustion turbine is that its specific output and thermal efficiency vary quite significantly with variations in the ambient temperature. On hot days, a machine may experience considerable difficulty in meeting its power demand. One concept that has not received much attention is the cooling down of compressor inlet air. This paper will examine the theoretical and practical implications of concept such as evaporative cooling, intercooling, expansion cooling and compression and absorption refrigeration.

Meher-Homji, C. B.; Mani, G.

1983-01-01T23:59:59.000Z

430

Water augmented indirectly-fired gas turbine systems and method  

SciTech Connect

An indirectly-fired gas turbine system utilizing water augmentation for increasing the net efficiency and power output of the system is described. Water injected into the compressor discharge stream evaporatively cools the air to provide a higher driving temperature difference across a high temperature air heater which is used to indirectly heat the water-containing air to a turbine inlet temperature of greater than about 1,000.degree. C. By providing a lower air heater hot side outlet temperature, heat rejection in the air heater is reduced to increase the heat recovery in the air heater and thereby increase the overall cycle efficiency.

Bechtel, Thomas F. (Lebanon, PA); Parsons, Jr., Edward J. (Morgantown, WV)

1992-01-01T23:59:59.000Z

431

Water augmented indirectly-fired gas turbine system and method  

DOE Patents (OSTI)

An indirectly-fired gas turbine system utilizing water augmentation for increasing the net efficiency and power output of the system is described. Water injected into the compressor discharge stream evaporatively cools the air to provide a high driving temperature difference across a high temperature air heater which is used to indirectly heat the water-containing air to a turbine inlet temperature of greater than about 1000{degrees}C. By providing a lower air heater hot side outlet temperature, heat rejection in the air heater is reduced to increase the heat recovery in the air heater and thereby increase the overall cycle efficiency.

Bechtel, T.F.; Parsons, E.J. Jr.

1991-12-31T23:59:59.000Z

432

Water augmented indirectly-fired gas turbine system and method  

DOE Patents (OSTI)

An indirectly-fired gas turbine system utilizing water augmentation for increasing the net efficiency and power output of the system is described. Water injected into the compressor discharge stream evaporatively cools the air to provide a high driving temperature difference across a high temperature air heater which is used to indirectly heat the water-containing air to a turbine inlet temperature of greater than about 1000[degrees]C. By providing a lower air heater hot side outlet temperature, heat rejection in the air heater is reduced to increase the heat recovery in the air heater and thereby increase the overall cycle efficiency.

Bechtel, T.F.; Parsons, E.J. Jr.

1991-01-01T23:59:59.000Z

433

Gas Turbine Combustor Performance on Synthetic Fuels, Volume 2  

Science Conference Proceedings (OSTI)

This volume presents a summary of a project to determine the effects of burning currently available coal-derived and shale-derived synthetic liquid fuels in state-of-the-art gas turbine combustors. It describes the fuels tested, the effects of NO emission and of smoke formation and reduction, and a comparison of surrogate and synthetic fuels. The project concluded that a number of selected coal and shale oil fuels can be used in current turbines as soon as these fuels become available.

1981-06-01T23:59:59.000Z

434

Gas Turbine Superalloy Material Property Handbook for Blades  

Science Conference Proceedings (OSTI)

Published material property data on superalloy bucket (blade) materials used in land-based combustion turbines is meager and widely scattered in literature. This handbook provides a comprehensive resource of material property data for superalloys used in combustion turbine buckets. Such data are critical for use in remaining life assessment calculations, failure analysis, comparison of various alloys, and alloy selection. The material data presented in this handbook were developed from experimental alloy...

2003-07-18T23:59:59.000Z

435

Systems Study for Improving Gas Turbine Performance for Coal/IGCC Application  

SciTech Connect

This study identifies vital gas turbine (GT) parameters and quantifies their influence in meeting the DOE Turbine Program overall Integrated Gasification Combined Cycle (IGCC) plant goals of 50% net HHV efficiency, $1000/kW capital cost, and low emissions. The project analytically evaluates GE advanced F class air cooled technology level gas turbine conceptual cycle designs and determines their influence on IGCC plant level performance including impact of Carbon capture. This report summarizes the work accomplished in each of the following six Tasks. Task 1.0--Overall IGCC Plant Level Requirements Identification: Plant level requirements were identified, and compared with DOE's IGCC Goal of achieving 50% Net HHV Efficiency and $1000/KW by the Year 2008, through use of a Six Sigma Quality Functional Deployment (QFD) Tool. This analysis resulted in 7 GT System Level Parameters as the most significant. Task 2.0--Requirements Prioritization/Flow-Down to GT Subsystem Level: GT requirements were identified, analyzed and prioritized relative to achieving plant level goals, and compared with the flow down of power island goals through use of a Six Sigma QFD Tool. This analysis resulted in 11 GT Cycle Design Parameters being selected as the most significant. Task 3.0--IGCC Conceptual System Analysis: A Baseline IGCC Plant configuration was chosen, and an IGCC simulation analysis model was constructed, validated against published performance data and then optimized by including air extraction heat recovery and GE steam turbine model. Baseline IGCC based on GE 207FA+e gas turbine combined cycle has net HHV efficiency of 40.5% and net output nominally of 526 Megawatts at NOx emission level of 15 ppmvd{at}15% corrected O2. 18 advanced F technology GT cycle design options were developed to provide performance targets with increased output and/or efficiency with low NOx emissions. Task 4.0--Gas Turbine Cycle Options vs. Requirements Evaluation: Influence coefficients on 4 key IGCC plant level parameters (IGCC Net Efficiency, IGCC Net Output, GT Output, NOx Emissions) of 11 GT identified cycle parameters were determined. Results indicate that IGCC net efficiency HHV gains up to 2.8 pts (40.5% to 43.3%) and IGCC net output gains up to 35% are possible due to improvements in GT technology alone with single digit NOx emission levels. Task 5.0--Recommendations for GT Technical Improvements: A trade off analysis was conducted utilizing the performance results of 18 gas turbine (GT) conceptual designs, and three most promising GT candidates are recommended. A roadmap for turbine technology development is proposed for future coal based IGCC power plants. Task 6.0--Determine Carbon Capture Impact on IGCC Plant Level Performance: A gas turbine performance model for high Hydrogen fuel gas turbine was created and integrated to an IGCC system performance model, which also included newly created models for moisturized syngas, gas shift and CO2 removal subsystems. This performance model was analyzed for two gas turbine technology based subsystems each with two Carbon removal design options of 85% and 88% respectively. The results show larger IGCC performance penalty for gas turbine designs with higher firing temperature and higher Carbon removal.

Ashok K. Anand

2005-12-16T23:59:59.000Z

436

Systems Study for Improving Gas Turbine Performance for Coal/IGCC Application  

DOE Green Energy (OSTI)

This study identifies vital gas turbine (GT) parameters and quantifies their influence in meeting the DOE Turbine Program overall Integrated Gasification Combined Cycle (IGCC) plant goals of 50% net HHV efficiency, $1000/kW capital cost, and low emissions. The project analytically evaluates GE advanced F class air cooled technology level gas turbine conceptual cycle designs and determines their influence on IGCC plant level performance including impact of Carbon capture. This report summarizes the work accomplished in each of the following six Tasks. Task 1.0--Overall IGCC Plant Level Requirements Identification: Plant level requirements were identified, and compared with DOE's IGCC Goal of achieving 50% Net HHV Efficiency and $1000/KW by the Year 2008, through use of a Six Sigma Quality Functional Deployment (QFD) Tool. This analysis resulted in 7 GT System Level Parameters as the most significant. Task 2.0--Requirements Prioritization/Flow-Down to GT Subsystem Level: GT requirements were identified, analyzed and prioritized relative to achieving plant level goals, and compared with the flow down of power island goals through use of a Six Sigma QFD Tool. This analysis resulted in 11 GT Cycle Design Parameters being selected as the most significant. Task 3.0--IGCC Conceptual System Analysis: A Baseline IGCC Plant configuration was chosen, and an IGCC simulation analysis model was constructed, validated against published performance data and then optimized by including air extraction heat recovery and GE steam turbine model. Baseline IGCC based on GE 207FA+e gas turbine combined cycle has net HHV efficiency of 40.5% and net output nominally of 526 Megawatts at NOx emission level of 15 ppmvd{at}15% corrected O2. 18 advanced F technology GT cycle design options were developed to provide performance targets with increased output and/or efficiency with low NOx emissions. Task 4.0--Gas Turbine Cycle Options vs. Requirements Evaluation: Influence coefficients on 4 key IGCC plant level parameters (IGCC Net Efficiency, IGCC Net Output, GT Output, NOx Emissions) of 11 GT identified cycle parameters were determined. Results indicate that IGCC net efficiency HHV gains up to 2.8 pts (40.5% to 43.3%) and IGCC net output gains up to 35% are possible due to improvements in GT technology alone with single digit NOx emission levels. Task 5.0--Recommendations for GT Technical Improvements: A trade off analysis was conducted utilizing the performance results of 18 gas turbine (GT) conceptual designs, and three most promising GT candidates are recommended. A roadmap for turbine technology development is proposed for future coal based IGCC power plants. Task 6.0--Determine Carbon Capture Impact on IGCC Plant Level Performance: A gas turbine performance model for high Hydrogen fuel gas turbine was created and integrated to an IGCC system performance model, which also included newly created models for moisturized syngas, gas shift and CO2 removal subsystems. This performance model was analyzed for two gas turbine technology based subsystems each with two Carbon removal design options of 85% and 88% respectively. The results show larger IGCC performance penalty for gas turbine designs with higher firing temperature and higher Carbon removal.

Ashok K. Anand

2005-12-16T23:59:59.000Z

437

Materials and Component Development for Advanced Turbine Systems  

SciTech Connect

Hydrogen-fired and oxy-fueled land-based gas turbines currently target inlet operating temperatures of ?1425-1760°C (?2600-3200°F). In view of natural gas or syngas-fired engines, advancements in both materials, as well as aerothermal cooling configurations are anticipated prior to commercial operation. This paper reviews recent technical accomplishments resulting from NETL’s collaborative research efforts with the University of Pittsburgh and West Virginia University for future land-based gas turbine applications.

Alvin, M.A.; Pettit, F.; Meier, G.H.; Yanar, M.; Helminiak, M.; Chyu, M.; Siw, S.; Slaughter, W.S.; Karaivanov, V.; Kang, B.S.; Feng, C.; Tannebaum, J.M.; Chen, R.; Zhang, B.; Fu, T.; Richards, G.A,; Sidwell, T.G.; Straub, D.; Casleton, K.H.; Dogan, O.M.

2008-07-01T23:59:59.000Z

438

Gas-path leakage seal for a turbine  

DOE Patents (OSTI)

A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a turbine (such as combustor casing segments of a gas turbine). The seal includes a flexible and generally imperforate metal sheet assemblage having opposing first and second surfaces and two opposing raised edges extending a generally identical distance above and below the surfaces. A first cloth layer assemblage has a thickness generally equal to the previously-defined identical distance and is superimposed on the first surface between the raised edges. A second cloth layer assemblage is generally identical to the first cloth layer assemblage and is superimposed on the second surface between the raised edges. 5 figs.

Bagepalli, B.S.; Aksit, M.F.; Farrell, T.R.

1999-08-10T23:59:59.000Z

439

Gas-path leakage seal for a turbine  

SciTech Connect

A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a turbine (such as combustor casing segments of a gas turbine). The seal includes a flexible and generally imperforate metal sheet assemblage having opposing first and second surfaces and two opposing raised edges extending a generally identical distance above and below the surfaces. A first cloth layer assemblage has a thickness generally equal to the previously-defined identical distance and is superimposed on the first surface between the raised edges. A second cloth layer assemblage is generally identical to the first cloth layer assemblage and is superimposed on the second surface between the raised edges.

Bagepalli, Bharat Sampathkumaran (Niskayuna, NY); Aksit, Mahmut Faruk (Troy, NY); Farrell, Thomas Raymond (Simpsonville, SC)

1999-01-01T23:59:59.000Z

440

Temperature detection in a gas turbine  

Science Conference Proceedings (OSTI)

A temperature detector includes a first metal and a second metal different from the first metal. The first metal includes a plurality of wires and the second metal includes a wire. The plurality of wires of the first metal are connected to the wire of the second metal in parallel junctions. Another temperature detector includes a plurality of resistance temperature detectors. The plurality of resistance temperature detectors are connected at a plurality of junctions. A method of detecting a temperature change of a component of a turbine includes providing a temperature detector include ing a first metal and a second metal different from the first metal connected to each other at a plurality of junctions in contact with the component; and detecting any voltage change at any junction.

Lacy, Benjamin; Kraemer, Gilbert; Stevenson, Christian

2012-12-18T23:59:59.000Z

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441

BIOMASS GASIFICATION AND POWER GENERATION USING ADVANCED GAS TURBINE SYSTEMS  

DOE Green Energy (OSTI)

A multidisciplined team led by the United Technologies Research Center (UTRC) and consisting of Pratt & Whitney Power Systems (PWPS), the University of North Dakota Energy & Environmental Research Center (EERC), KraftWork Systems, Inc. (kWS), and the Connecticut Resource Recovery Authority (CRRA) has evaluated a variety of gasified biomass fuels, integrated into advanced gas turbine-based power systems. The team has concluded that a biomass integrated gasification combined-cycle (BIGCC) plant with an overall integrated system efficiency of 45% (HHV) at emission levels of less than half of New Source Performance Standards (NSPS) is technically and economically feasible. The higher process efficiency in itself reduces consumption of premium fuels currently used for power generation including those from foreign sources. In addition, the advanced gasification process can be used to generate fuels and chemicals, such as low-cost hydrogen and syngas for chemical synthesis, as well as baseload power. The conceptual design of the plant consists of an air-blown circulating fluidized-bed Advanced Transport Gasifier and a PWPS FT8 TwinPac{trademark} aeroderivative gas turbine operated in combined cycle to produce {approx}80 MWe. This system uses advanced technology commercial products in combination with components in advanced development or demonstration stages, thereby maximizing the opportunity for early implementation. The biofueled power system was found to have a levelized cost of electricity competitive with other new power system alternatives including larger scale natural gas combined cycles. The key elements are: (1) An Advanced Transport Gasifier (ATG) circulating fluid-bed gasifier having wide fuel flexibility and high gasification efficiency; (2) An FT8 TwinPac{trademark}-based combined cycle of approximately 80 MWe; (3) Sustainable biomass primary fuel source at low cost and potentially widespread availability-refuse-derived fuel (RDF); (4) An overall integrated system that exceeds the U.S. Department of Energy (DOE) goal of 40% (HHV) efficiency at emission levels well below the DOE suggested limits; and (5) An advanced biofueled power system whose levelized cost of electricity can be competitive with other new power system alternatives.

David Liscinsky

2002-10-20T23:59:59.000Z

442

Enabling Technology for Monitoring & Predicting Gas Turbine Health & Performance in COAL IGCC Powerplants  

SciTech Connect

The ''Enabling & Information Technology To Increase RAM for Advanced Powerplants'' program, by DOE request, has been re-directed, de-scoped to two tasks, shortened to a 2-year period of performance, and refocused to develop, validate and accelerate the commercial use of enabling materials technologies and sensors for Coal IGCC powerplants. The new program has been re-titled as ''Enabling Technology for Monitoring & Predicting Gas Turbine Health & Performance in IGCC Powerplants'' to better match the new scope. This technical progress report summarizes the work accomplished in the reporting period April 1, 2004 to August 31, 2004 on the revised Re-Directed and De-Scoped program activity. The program Tasks are: Task 1--IGCC Environmental Impact on high Temperature Materials: This first materials task has been refocused to address Coal IGCC environmental impacts on high temperature materials use in gas turbines and remains in the program. This task will screen material performance and quantify the effects of high temperature erosion and corrosion of hot gas path materials in Coal IGCC applications. The materials of interest will include those in current service as well as advanced, high-performance alloys and coatings. Task 2--Material In-Service Health Monitoring: This second task develops and demonstrates new sensor technologies to determine the in-service health of advanced technology Coal IGCC powerplants, and remains in the program with a reduced scope. Its focus is now on only two critical sensor need areas for advanced Coal IGCC gas turbines: (1) Fuel Quality Sensor for detection of fuel impurities that could lead to rapid component degradation, and a Fuel Heating Value Sensor to rapidly determine the fuel heating value for more precise control of the gas turbine, and (2) Infra-Red Pyrometer to continuously measure the temperature of gas turbine buckets, nozzles, and combustor hardware.

Kenneth A. Yackly

2004-09-30T23:59:59.000Z

443

Large heavy-duty gas turbines for base-load power generation and heat cogeneration  

SciTech Connect

The predominant role of large gas turbines has shifted from peaking-load duty to midrange and base-load electric power generation, especially within combined-cycle plants. Such applications require heavy-duty industrial gas turbines to ensure the same high reliability and availability for continuous service as the associated steam turbines. It is also important that the gas turbines be designed for low maintenance to minimize the necessary outage times and costs for component repair and replacement. The basic design principles and applications of Model V94 gas turbines are discussed with special reference to highly reliable and economic bulk power generation.

Joyce, J.S.

1985-01-01T23:59:59.000Z

444

Verification of creep performance of a ceramic gas turbine blade  

SciTech Connect

Tensile creep tests were carried out on a Norton NT164 silicon nitride ceramic turbine blade containing 4 wt. % Y{sub 2}O{sub 3} sintering additive at 1,370 C in air under selected stress levels. The objective of this study was to measure the creep properties of test specimens extracted from a complex shaped ceramic gas turbine blade to verify the response of actual components. The creep results indicated that specimens from both the airfoil and dovetail sections exhibited creep rates that were about 4 to 100 times higher than those obtained from both the buttonhead and dogbone creep specimens machined from the developmental billets fabricated with the same composition and processing procedures. Electron microscopy analyses suggested that high creep rates and short lifetimes observed in specimens extracted from the turbine blade resulted from a higher glassy phase(s) content and smaller number density of elongated grain microstructure. Silicon nitride ceramics with an in-situ reinforced elongated microstructure have been the primary candidates for both advanced automotive and land-based gas turbine engine applications.

Lin, H.T.; Becher, P.F.; Ferber, M.K. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.; Parthasarathy, V. [Solar Turbines Inc., San Diego, CA (United States)

1998-03-01T23:59:59.000Z

445

DOE Technology Successes - "Breakthrough" Gas Turbines | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Technology Successes - "Breakthrough" Gas Turbines DOE Technology Successes - "Breakthrough" Gas Turbines DOE Technology Successes - "Breakthrough" Gas Turbines For years, gas turbine manufacturers faced a barrier that, for all practical purposes, capped power generating efficiencies for turbine-based power generating systems. The barrier was temperature. Above 2300 degrees F, available cooling technologies were insufficient to protect the turbine blades and other internal components from heat degradation. Since higher temperatures are the key to higher efficiencies, this effectively limited the generating efficiency at which a turbine power plant could convert the energy in the fuel into electricity. The Department of Energy's Office of Fossil Energy took on the challenge of turbine temperatures in 1992, and nine years later, its private sector

446

Melt Infiltrated Ceramic Matrix Composites for Shrouds and Combustor Liners of Advanced Industrial Gas Turbines  

DOE Green Energy (OSTI)

This report covers work performed under the Advanced Materials for Advanced Industrial Gas Turbines (AMAIGT) program by GE Global Research and its collaborators from 2000 through 2010. A first stage shroud for a 7FA-class gas turbine engine utilizing HiPerComp{reg_sign}* ceramic matrix composite (CMC) material was developed. The design, fabrication, rig testing and engine testing of this shroud system are described. Through two field engine tests, the latter of which is still in progress at a Jacksonville Electric Authority generating station, the robustness of the CMC material and the shroud system in general were demonstrated, with shrouds having accumulated nearly 7,000 hours of field engine testing at the conclusion of the program. During the latter test the engine performance benefits from utilizing CMC shrouds were verified. Similar development of a CMC combustor liner design for a 7FA-class engine is also described. The feasibility of using the HiPerComp{reg_sign} CMC material for combustor liner applications was demonstrated in a Solar Turbines Ceramic Stationary Gas Turbine (CSGT) engine test where the liner performed without incident for 12,822 hours. The deposition processes for applying environmental barrier coatings to the CMC components were also developed, and the performance of the coatings in the rig and engine tests is described.

Gregory Corman; Krishan Luthra; Jill Jonkowski; Joseph Mavec; Paul Bakke; Debbie Haught; Merrill Smith

2011-01-07T23:59:59.000Z

447

Firing Excess Refinery Butane in Peaking Gas Turbines  

E-Print Network (OSTI)

New environmentally-driven regulations for motor gasoline volatility will significantly alter refinery light ends supply/demand balancing. This, in turn, will impact refinery economics. This paper presumes that one outcome will be excess refinery normal butane