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Note: This page contains sample records for the topic "gas turbine power" 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.
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1

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

2

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

3

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

4

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

5

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

6

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

7

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-

8

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

9

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 ...

10

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

11

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

12

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

13

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

14

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

15

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

16

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

17

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

18

Gas Turbine Engines  

Science Conference Proceedings (OSTI)

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

19

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

20

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

Note: This page contains sample records for the topic "gas turbine power" 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

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

22

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

23

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

24

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

25

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

26

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

27

Design of a High Temperature Small Particle Solar Receiver for Powering a Gas Turbine Engine  

E-Print Network (OSTI)

Design of a High Temperature Small Particle Solar Receiver for Powering a Gas Turbine Engine Dr. Fletcher Miller SDSU Department of Mechanical Engineering Abstract Solar thermal power for electricity will describe the design of a high temperature solar receiver capable of driving a gas turbine for power

Ponce, V. Miguel

28

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, Synnøve Mangerud

2010-01-01T23:59:59.000Z

29

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

30

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

31

Rise in gas-fired power generation tracks gains in turbine efficiency  

SciTech Connect

Natural gas-fueled gas turbines--in both simple and combined-cycle configurations--will account for most power generation capacity additions through 2000. It is widely agreed that gas turbines will remain the dominant form of technology for power generation for the next decade or two, making them the power generation technology of choice for today and the future. The pre-eminent stature of gas turbines can be attributed to their low capital costs, high efficiency, low emissions, short permitting and construction lead times, and proven reliability. The versatility of gas turbines also makes them unique among power generation technologies, as they can economically serve a wide spectrum of applications and sizes--from distributed generation to industrial cogeneration and central station generation. Three primary factors contribute to the growing interest in gas turbine-based power generation and the role gas turbines will play in the future power generation market: An optimistic outlook for the supply and price of natural gas; technology advances that have produced substantial improvements in efficiency and emissions; and emissions regulations that may favor the use of gas turbines over traditional fossil-fueled steam turbines. These three factors are discussed.

Bautista, P. [Gas Research Inst., Chicago, IL (United States)

1996-08-12T23:59:59.000Z

32

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

33

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

34

Heat Exchanger Design for Solar Gas-Turbine Power Plant.  

E-Print Network (OSTI)

?? The aim of this project is to select appropriate heat exchangers out of available gas-gas heat exchangers for used in a proposed power plant.… (more)

Yakah, Noah

2012-01-01T23:59:59.000Z

35

Turbine power plant system  

SciTech Connect

A turbine power plant system consisting of three sub-systems; a gas turbine sub-system, an exhaust turbine sub-system, and a steam turbine sub-system. The three turbine sub-systems use one external fuel source which is used to drive the turbine of the gas turbine sub-system. Hot exhaust fluid from the gas turbine sub-system is used to drive the turbines of the exhaust turbine sub-system and heat energy from the combustion chamber of the gas turbine sub-system is used to drive the turbine of the steam turbine sub-system. Each sub-system has a generator. In the gas turbine sub-system, air flows through several compressors and a combustion chamber and drives the gas turbine. In the exhaust turbine sub-system, hot exhaust fluid from the gas turbine sub-system flows into the second passageway arrangement of first and fourth heat exchangers and thus transfering the heat energy to the first passageway arrangement of the first and fourth heat exchangers which are connected to the inlets of first and second turbines, thus driving them. Each turbine has its own closed loop fluid cycle which consists of the turbine and three heat exchangers and which uses a fluid which boils at low temperatures. A cooler is connected to a corresponding compressor which forms another closed loop system and is used to cool the exhaust fluid from each of the two above mentioned turbines. In the steam turbine sub-system, hot fluid is used to drive the steam turbine and then it flows through a fluid duct, to a first compressor, the first fluid passageway arrangement of first and second heat exchangers, the second passageway of the first heat exchanger, the combustion chamber of the gas turbine where it receives heat energy, and then finally to the inlet of the steam turbine, all in one closed loop fluid cycle. A cooler is connected to the second passageway of the second heat exchanger in a closed loop fluid cycle, which is used to cool the turbine exhaust.

Papastavros, D.

1985-03-05T23:59:59.000Z

36

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

37

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

38

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

39

Turbine power plant with back pressure turbine  

SciTech Connect

A combined gas/steam turbine power plant is disclosed including a gas turbine having a combustion chamber and a steam turbine driven by steam generated with heat from the combustion gases of the gas turbine. The steam is utilized in a technological process downstream of the steam turbine. Relatively small fluctuations in back pressure are compensated by varying a delivery of fuel to the combustion chamber. Relatively large fluctuations in back pressure are compensated by supplying live steam directly to the technological process downstream of the steam turbine. Various devices are provided for conditioning the steam prior to being supplied to the technological process.

Kalt, J.; Kehlhofer, R.

1981-06-23T23:59:59.000Z

40

Acoustic and thermal packaging of small gas turbines for portable power  

E-Print Network (OSTI)

To meet the increasing demand for advanced portable power units, for example for use in personal electronics and robotics, a number of studies have focused on portable small gas turbines. This research is concerned with ...

Tanaka, Shinji, S.M. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine power" 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

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

42

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

43

Life extension of gas turbines used for power generation  

SciTech Connect

Gas turbines have traditionally been used by electric utilities to supplement generating capacity during peak demand periods. As they age, the utility is faced with the decision of either replacing the units to maintain a reliable source of generating capacity, or extending the life of the units through the use of improved maintenance and monitoring techniques. This paper discusses some of the considerations for extended life operation of gas turbines. To perform this study, actual operating and failure data for 50 Pratt Whitney FT-4 gas turbines were collected from a cooperating utility and analyzed to identify predominant failure causes and components most frequently failed. Failure rates for individual engine modules were calculated as a function of engine age to identify time-dependent trends and their effect on engine reliability. Mean time between failures and engine availability were also determined and are presented. Based on the results of the analysis, potential improvements to operation and maintenance methods were identified and are discussed. 5 refs., 7 figs.

Lofaro, R.; Villaran, M.

1990-01-01T23:59:59.000Z

44

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

45

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

46

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

47

Multidisciplinary Modeling, Control, and Optimization of a Solid Oxide Fuel Cell/Gas Turbine Hybrid Power System.  

E-Print Network (OSTI)

??This thesis describes a systematical study, including multidisciplinary modeling, simulation, control, and optimization, of a fuel cell - gas turbine hybrid power system that aims… (more)

Abbassi Baharanchi, Atid

2009-01-01T23:59:59.000Z

48

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

49

Closed Dual Fluid Gas Turbine Power Plant Without Emission Of Co  

E-Print Network (OSTI)

. This paper describes a construction and characteristics of a coal-gas-burning high eciency power plant which emits no carbon dioxide (CO 2 ) into the atmosphere. In the plant, CO 2 gas and superheated steam are used as the main and sub working uid, respectively, of a closed dual uid gas turbine power generation system. It is assumed that a coal gas whose principal compositions are CO, H2 , CO2 and CH4 is burnt in a combustor using oxygen, and that CO 2 gas and superheated steam are used as the main and sub working uid of a turbine, respectively. Consequently, the constituent gases of the combustion gas become CO2 and H2O. Thus, CO2 gas included in the exhaust gas can be easily separated at the condenser outlet from the condensate (H2O). Most of recovered CO 2 is recycled as the main working uid of the turbine. In the plant, high-temperature turbine exhaust gas is utilized in a waste heat boiler to produce superheated steam which is injected into the combustor in order to improve...

Into The Atmosphere; P. S. Pak; K. Nakamura; Y. Suzuki

1989-01-01T23:59:59.000Z

50

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 ...

51

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

52

Performance Characteristics of an Electrochemically Powered Turboprop: A Comparison with State of the Art Gas Turbines  

E-Print Network (OSTI)

As we search for alternative fuels and energy efficient vehicles it is important to consider the role of electrochemical fuel cells in aircraft propulsion systems. This paper focuses on this issue with regards to small turboprop aircraft. An electrochemical propulsion system would employ liquid hydrogen in an air breathing fuel cell that would generate electricity to run electric motors which in tum power the props. The major question this paper addresses is: under what conditions will a hydrogen/fuel cell power system be superior to a state of the art hydrogen/gas turbine power system? The systems are compared on a fuel consumption basis, a cost basis, and a reliability/ maintainability basis. The analysis show that both specific power and efficiency play an important role in determining which configuration uses less fuel. In general, the fuel cell system is heavier but more efficient than the gas turbine. It appears that the fuel cell system will begin to compete with the gas turbine as the power densities surpass 1 kw/kg and the efficiencies approaches .45. From a cost perspective gas turbines presently cost $500/ Kw and fuel cells are far more expensive. However, the raw materials in a fuel cell are inexpensive and could conceivably be cheaper, thus making the fuel cells increasingly attractive. From a reliability perspective, the fuel cell system appears to have a significant advantage due to the lack of moving parts and the high reliability of electric motors.

Johnson, M. C.; Swan, D. H.

1993-03-01T23:59:59.000Z

53

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

54

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

55

Impact study on the use of biomass-derived fuels in gas turbines for power generation  

DOE Green Energy (OSTI)

This report evaluates the properties of fuels derived from biomass, both gaseous and liquid, against the fuel requirements of gas turbine systems for gernating electrical power. The report attempts to be quantitative rather than merely qualitative to establish the significant variations in the properties of biomass fuels from those of conventional fuels. Three general categories are covered: performance, durability, and storage and handling.

Moses, C.A.; Bernstein, H. [Southwest Research Inst., San Antonio, TX (United States)

1994-01-01T23:59:59.000Z

56

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

57

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

58

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

59

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.

60

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

Note: This page contains sample records for the topic "gas turbine power" 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

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

62

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

63

SOME SPECIAL APPLICATIONS OF WELDING IN STEAM, GAS TURBINE, AND NUCLEAR POWER PLANTS  

SciTech Connect

Six special applications of welding in steam, gasturbine, and nuclear power plants are described. Experiences are quoted of: the welding of austenittc steel gas-turbine rotors; the butt welding of heat-exchanger tubes in dissimilar metals; the welding of steam pipes for advanced steam conditions; welding in relation to feedwater heaters; the construction of expansion bellows in alloy steels; and the attachment of fins to heat-exchanger tubes. (auth)

Robertson, J.M.

1961-10-01T23:59:59.000Z

64

Proceedings of the Department of Energy advanced gas turbine central power systems workshop  

SciTech Connect

The basic objective of the DOE Central Power Systems group is the development of technology for increasing the use of coal in central station electric power generation in an economical and environmentally acceptable manner. The two major research and development areas of this program are the Open Cycle Gas Turbine System and the Closed Cycle Gas Turbine System. Recognizing that the ultimate success of the DOE program is measured by end-user acceptance of the technology developed, the workshop was held to obtain utility industry comments and suggestions on the development of these systems and their potential use by electric power utilities. Representatives of equipment manufacturers, architect and engineering firms, and universities were also invited as participants to provide a comprehensive review of the technology development and implementation process. The 65 participants and observers examined the following topics: technical considerations of the Open Cycle and of the Closed Cycle Gas Turbine program; commercialization of both systems; and regulatory impacts on the development of both systems. Each group evaluated the existing program, indicating R and D objectives that they supported and cited recommendations for modifications and expansion of future R and D work.

D' Angelo, S. (ed.)

1980-04-01T23:59:59.000Z

65

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

66

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

67

Use of GTE-65 gas turbine power units in the thermal configuration of steam-gas systems for the refitting of operating thermal electric power plants  

SciTech Connect

Thermal configurations for condensation, district heating, and discharge steam-gas systems (PGU) based on the GTE-65 gas turbine power unit are described. A comparative multivariant analysis of their thermodynamic efficiency is made. Based on some representative examples, it is shown that steam-gas systems with the GTE-65 and boiler-utilizer units can be effectively used and installed in existing main buildings during technical refitting of operating thermal electric power plants.

Lebedev, A. S.; Kovalevskii, V. P. ['Leningradskii Metallicheskii Zavod', branch of JSC 'Silovye mashiny' (Russian Federation); Getmanov, E. A.; Ermaikina, N. A. ['Institut Teploenergoproekt', branch of JSC 'Inzhenernyi tsentr EES' (Russian Federation)

2008-07-15T23:59:59.000Z

68

SMART POWER TURBINE  

SciTech Connect

Gas turbines are the choice technology for high-performance power generation and are employed in both simple and combined cycle configurations around the world. The Smart Power Turbine (SPT) program has developed new technologies that are needed to further extend the performance and economic attractiveness of gas turbines for power generation. Today's power generation gas turbines control firing temperatures indirectly, by measuring the exhaust gas temperature and then mathematically calculating the peak combustor temperatures. But temperatures in the turbine hot gas path vary a great deal, making it difficult to control firing temperatures precisely enough to achieve optimal performance. Similarly, there is no current way to assess deterioration of turbine hot-gas-path components without shutting down the turbine. Consequently, maintenance and component replacements are often scheduled according to conservative design practices based on historical fleet-averaged data. Since fuel heating values vary with the prevalent natural gas fuel, the inability to measure heating value directly, with sufficient accuracy and timeliness, can lead to maintenance and operational decisions that are less than optimal. GE Global Research Center, under this Smart Power Turbine program, has developed a suite of novel sensors that would measure combustor flame temperature, online fuel lower heating value (LHV), and hot-gas-path component life directly. The feasibility of using the ratio of the integrated intensities of portions of the OH emission band to determine the specific average temperature of a premixed methane or natural-gas-fueled combustion flame was demonstrated. The temperature determined is the temperature of the plasma included in the field of view of the sensor. Two sensor types were investigated: the first used a low-resolution fiber optic spectrometer; the second was a SiC dual photodiode chip. Both methods worked. Sensitivity to flame temperature changes was remarkably high, that is a 1-2.5% change in ratio for an 11.1 C (20 F) change in temperature at flame temperatures between 1482.2 C (2700 F) and 1760 C (3200 F). Sensor ratio calibration was performed using flame temperatures determined by calculations using the amount of unburned oxygen in the exhaust and by the fuel/air ratio of the combustible gas mixture. The agreement between the results of these two methods was excellent. The sensor methods characterized are simple and viable. Experiments are underway to validate the GE Flame Temperature Sensor as a practical tool for use with multiburner gas turbine combustors. The lower heating value (LHV) Fuel Quality Sensor consists of a catalytic film deposited on the surface of a microhotplate. This micromachined design has low heat capacity and thermal conductivity, making it ideal for heating catalysts placed on its surface. Several methods of catalyst deposition were investigated, including micropen deposition and other proprietary methods, which permit precise and repeatable placement of the materials. The use of catalysts on the LHV sensor expands the limits of flammability (LoF) of combustion fuels as compared with conventional flames; an unoptimized LoF of 1-32% for natural gas (NG) in air was demonstrated with the microcombustor, whereas conventionally 4 to 16% is observed. The primary goal of this work was to measure the LHV of NG fuels. The secondary goal was to determine the relative quantities of the various components of NG mixes. This determination was made successfully by using an array of different catalysts operating at different temperatures. The combustion parameters for methane were shown to be dependent on whether Pt or Pd catalysts were used. In this project, significant effort was expended on making the LHV platform more robust by the addition of high-temperature stable materials, such as tantalum, and the use of passivation overcoats to protect the resistive heater/sensor materials from degradation in the combustion environment. Modeling and simulation were used to predict improved sensor designs.

Nirm V. Nirmalan

2003-11-01T23:59:59.000Z

69

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 U.S. 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, plant. A low technology industrial recuperation type gas turbine is used that operates with an inlet blade temperature of 1450{degrees}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.C. [Energy and Environmental Research Corp., Orrville, OH (United States); Keener, H.M. [Ohio State Univ., Wooster, OH (United States); Hall, A.W. [Morgantown Energy Technology Center, Morgantown, WV (United States)

1995-02-01T23:59:59.000Z

70

Combined Heat and Power Plant Steam Turbine  

E-Print Network (OSTI)

waste heat) Gas Turbine University Substation High Pressure Natural Gas Campus Electric Load SouthernCombined Heat and Power Plant Steam Turbine Steam Turbine Chiller Campus Heat Load Steam (recovered Generator Heat Recovery Alternative Uses: 1. Campus heating load 2. Steam turbine chiller to campus cooling

Rose, Michael R.

71

Power plants with topping gas turbines and coal gasification planning of new plants and upgrading of existing plants  

Science Conference Proceedings (OSTI)

This paper reports on existing and new power plants improved environmentally and economically by integrating gas turbines in the plant process. The rate of additional firing has an influence on the overall plant efficiency. The influence of the additional firing of natural gas-fired power plants is compared to that of power plants with integrated coal gasification. The differences are explained. The result of the examination lead to recommendations for the design of new plants and for upgrading of existing plants. The advantages of topping gas turbines are shown by examples of new power plants and upgraded plants.

Schoedel, J.; Mertens, K. (ABB Kraftwerke AG, Mannheim (DE))

1990-01-01T23:59:59.000Z

72

Advanced combustion technologies for gas turbine power plants  

DOE Green Energy (OSTI)

Objectives are to develop actuators for enhancing the mixing between gas streams, increase combustion stability, and develop hgih-temperature materials for actuators and sensors in combustors. Turbulent kinetic energy maps of an excited jet with co-flow in a cavity with a partially closed exhaust end are given with and without a longitudinal or a transverse acoustic field. Dielectric constants and piezoelectric coefficients were determined for Sr{sub 2}(Nb{sub x}Ta{sub 1-x}){sub 2}O{sub 7} ceramics.

Vandsburger, U. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Mechanical Engineering; Roe, L.A. [Arkansas Univ., Fayetteville, AR (United States). Dept. of Mechanical Engineering; Desu, S.B. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Dept. of Materials Science and Engineering

1995-12-31T23:59:59.000Z

73

EPRI NMAC Maintainability Review of the International Gas-Turbine Modular Helium Reactor Power Conversion Unit  

Science Conference Proceedings (OSTI)

This report provides information of interest to the designers of modular helium-reactor-driven gas turbines and persons considering the purchase of this type of plant.

2001-02-01T23:59:59.000Z

74

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...

75

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

76

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

77

Elevated Temperature Materials for Power Generation and Propulsion The energy industry is designing higher-efficiency land-based turbines for natural gas-fired  

E-Print Network (OSTI)

higher-efficiency land-based turbines for natural gas-fired power generation systems. The high inlet is significant for modeling cyclic deformation in directionally solidified and single crystal turbine blades

Li, Mo

78

Test results of a steam injected gas turbine to increase power and thermal efficiency  

Science Conference Proceedings (OSTI)

The desire to increase both power and thermal efficiency of the gas turbine (Brayton cycle) engine has been pursued for a number of years and has involved many approaches. The use of steam in the cycle to improve performance has been proposed by various investigators. This was most recently proposed by International Power Technology, Inc. (IPT) and has been tested by Detroit Diesel Allison (DDA), Division of General Motors. This approach, identified as the Cheng dual-fluid cycle (Cheng/DFC), includes the generation of steam using heat from the exhaust, and injecting this steam into the engine combustion chamber. Test results on an Allison 501-KB engine have demonstrated that use of this concept will increase the thermal efficiency of the engine by 30% and the output power by 60% with no increase in turbine inlet temperature. These results will be discussed, as will the impact of steam rate, location of steam injection, turbine temperature, and engine operational characteristics on the performance of the Cheng/DFC.

Messerlie, R.L.; Tischler, A.O.

1983-08-01T23:59:59.000Z

79

Solid oxide fuel cell/gas turbine power plant cycles and performance estimates  

DOE Green Energy (OSTI)

SOFC pressurization enhances SOFC efficiency and power performance. It enables the direct integration of the SOFC and gas turbine technologies which can form the basis for very efficient combined- cycle power plants. PSOFC/GT cogeneration systems, producing steam and/or hot water in addition to electric power, can be designed to achieve high fuel effectiveness values. A wide range of steam pressures and temperatures are possible owing to system component arrangement flexibility. It is anticipated that Westinghouse will offer small PSOFC/GT power plants for sale early in the next decade. These plants will have capacities less than 10 MW net ac, and they will operate with efficiencies in the 60-65% (net ac/LHV) range.

Lundberg, W.L.

1996-12-31T23:59:59.000Z

80

Combined cycle electric power plant having a control system which enables dry steam generator operation during gas turbine operation  

SciTech Connect

A control system for a combined cycle electric power plant is described. It contains: at least one gas turbine including an exit through which heated exhaust gases pass; means for generating steam coupled to said gas turbine exit for transferring heat from the exhaust gases to a fluid passing through the steam generator; a steam turbine coupled to the steam generator and driven by the steam supplied thereby; means for generating electric power by the driving power of the turbines; condenser means for receiving and converting the spent steam from the steam turbine into condensate; and steam generating means comprising a low pressure storage tank, a first heat exchange tube, a boiler feedwater pump for directing fluid from a low pressure storage tank through the first heat exchange tube, a main storage drum, a second heat exchange tube, and a high pressure recirculation pump for directing fluid from the main storage pump through the second heat exchange tube. The control system monitors the temperature of the exhaust gas turbine gases as directed to the steam generator and deactuates the steam turbine when a predetermined temperature is exceeded.

Martz, L.F.; Plotnick, R.J.

1974-08-08T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine power" 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

Low NO{sub x} turbine power generation utilizing low Btu GOB gas. Final report, June--August 1995  

SciTech Connect

Methane, a potent greenhouse gas, is second only to carbon dioxide as a contributor to potential global warming. Methane liberated by coal mines represents one of the most promising under exploited areas for profitably reducing these methane emissions. Furthermore, there is a need for apparatus and processes that reduce the nitrogen oxide (NO{sub x}) emissions from gas turbines in power generation. Consequently, this project aims to demonstrate a technology which utilizes low grade fuel (CMM) in a combustion air stream to reduce NO{sub x} emissions in the operation of a gas turbine. This technology is superior to other existing technologies because it can directly use the varying methane content gases from various streams of the mining operation. The simplicity of the process makes it useful for both new gas turbines and retrofitting existing gas turbines. This report evaluates the feasibility of using gob gas from the 11,000 acre abandoned Gateway Mine near Waynesburg, Pennsylvania as a fuel source for power generation applying low NO{sub x} gas turbine technology at a site which is currently capable of producing low grade GOB gas ({approx_equal} 600 BTU) from abandoned GOB areas.

Ortiz, I.; Anthony, R.V.; Gabrielson, J.; Glickert, R.

1995-08-01T23:59:59.000Z

82

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

83

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

84

Profitability Comparison Between Gas Turbines and Gas Engine in Biomass-Based Power Plants Using Binary Particle Swarm Optimization  

Science Conference Proceedings (OSTI)

This paper employs a binary discrete version of the classical Particle Swarm Optimization to compare the maximum net present value achieved by a gas turbines biomass plant and a gas engine biomass plant. The proposed algorithm determines the optimal ...

P. Reche López; M. Gómez González; N. Ruiz Reyes; F. Jurado

2007-06-01T23:59:59.000Z

85

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

86

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

87

An Investigation of the Application of the Gas Generator-Free Turbine Cycle to a Nuclear Powered Aircraft  

SciTech Connect

This study has investigated the feasibility of installing a gas generator-free turbine type power plant in the R3Y aircraft, using a circulating fuel reactor as a power source. Two variations of the cycle were considered. The split flow cycle bleeds high temperature, high pressure air from the gas generator directly to the free turbine in the wing. The through flow cycle partially expands the high temperature, high pressure air through the compressor turbine of the gas generator then directs the compressor-turbine exhaust air to the free turbine in the wing. Design parameters of pressure ratio, radiator depth, radiation flow density, and hot gas duct size were optimized to give minimum weight per shaft horsepower of the complete power plant. The weight of a split flow power plant capable of supplying 22,000 shaft horsepower was found to be 116,600 pounds. The weight of a similar through flow power plant was found to be 119,900 pounds. The reactor power required in both cases was 70 megawatts. The nominal gross weight of the R3Y airplane is 175,000 pounds. With pay loads of approximately 20,000 pounds, either nuclear conversion will have a gross weight of 200,000 pounds. It was found that either cycle could be installed in the R3Y aircraft; however, the installation of either would require major structural redesign. The split flow cycle with its smaller hot air ducts required the least amount of redesign. A comparison of existing aircraft engines with a preliminary design of the split flow turbo-components indicated that the compressor and possibly the free turbine could be adapted from current engine components.

Alvis, J. H.; Chessman, S. R.

1957-08-01T23:59:59.000Z

88

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

89

Inlet Air Spray Cooler for Gas Turbine Power Augmentation: Plans, Specifications and Test Results  

Science Conference Proceedings (OSTI)

Field tests on a commercial combustion turbine generator show that novel cooling technology economically augments power output. This report details the results and presents key spray cooler design parameters.

1997-07-28T23:59:59.000Z

90

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

91

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

92

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

93

Dynamics and control modeling of the closed-cycle gas turbine (GT-HTGR) power plant  

SciTech Connect

The simulation if presented for the 800-MW(e) two-loop GT-HTGR plant design with the REALY2 transient analysis computer code, and the modeling of control strategies called for by the inherently unique operational requirements of a multiple loop GT-HTGR is described. Plant control of the GT-HTGR is constrained by the nature of its power conversion loops (PCLs) in which the core cooling flow and the turbine flow are directly related and thus changes in flow affect core cooling as well as turbine power. Additionally, the high thermal inertia of the reactor core precludes rapid changes in the temperature of the turbine inlet flow.

Bardia, A.

1980-02-01T23:59:59.000Z

94

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

95

Hot gas cleanup and gas turbine aspects of an advanced PFBC power plant  

SciTech Connect

The overall objective of the second-generation PFBC development program is to advance this concept to a commercial status. Three major objectives of the current Phase 2 program activities are to: Separately test key components of the second-generation PFBC power plant at sub-scale to ascertain their performance characteristics, Revise the commercial plant performance and economic predictions where necessary, Prepare for a 1.6 MWe equivalent Phase 3 integrated subsystem test of the key components. The key components of the plant, with respect to development risk, are the carbonizer, the circulating PFBC unit, the ceramic barrier filter, and the topping combustor. This paper reports on the development and testing of one key component -- the ceramic barrier filter for the carbonizer fuel gas. The objective of the Phase 2 carbonizer ceramic barrier filter testing has been to confirm filter performance and operability in the carbonizer fuel gas environment.

Robertson, A. (Foster Wheeler Development Corp., Livingston, NJ (United States)); Newby, R.A.; Alvin, M.A.; Bachovchin, D.M.; Bruck, G.J.; Smeltzer, E.E. (Westinghouse Electric Corp., Pittsburgh, PA (United States). Science and Technology Center)

1992-01-01T23:59:59.000Z

96

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

97

Method of and apparatus for preheating pressurized fluidized bed combustor and clean-up subsystem of a gas turbine power plant  

DOE Patents (OSTI)

In a gas turbine power plant having a pressurized fluidized bed combustor, gas turbine-air compressor subsystem and a gas clean-up subsystem interconnected for fluid flow therethrough, a pipe communicating the outlet of the compressor of the gas turbine-air compressor subsystem with the interior of the pressurized fluidized bed combustor and the gas clean-up subsystem to provide for flow of compressed air, heated by the heat of compression, therethrough. The pressurized fluidized bed combustor and gas clean-up subsystem are vented to atmosphere so that the heated compressed air flows therethrough and loses heat to the interior of those components before passing to the atmosphere.

Cole, Rossa W. (E. Rutherford, NJ); Zoll, August H. (Cedar Grove, NJ)

1982-01-01T23:59:59.000Z

98

Advanced Gas Turbine Guidelines: Performance Retention for GE 7F Unit in Peaking Operation: Durability Surveillance at Potomac Elect ric Power Company's Station H  

Science Conference Proceedings (OSTI)

Worldwide pressures to reduce power generation costs have encouraged domestic and foreign manufacturers to build high-efficiency gas turbines implementing the latest technological advances. To assure the staying power of these turbines, EPRI launched a multi-year durability surveillance program. This report discusses performance monitoring and analysis of a General Electric 7F unit in peaking operation.

1999-04-26T23:59:59.000Z

99

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

100

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

Note: This page contains sample records for the topic "gas turbine power" 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

Partial Oxidation Gas Turbine for Power and Hydrogen Co-Production from Coal-Derived Fuel in Industrial Applications  

SciTech Connect

The report presents a feasibility study of a new type of gas turbine. A partial oxidation gas turbine (POGT) shows potential for really high efficiency power generation and ultra low emissions. There are two main features that distinguish a POGT from a conventional gas turbine. These are associated with the design arrangement and the thermodynamic processes used in operation. A primary design difference of the POGT is utilization of a non?catalytic partial oxidation reactor (POR) in place of a conventional combustor. Another important distinction is that a much smaller compressor is required, one that typically supplies less than half of the air flow required in a conventional gas turbine. From an operational and thermodynamic point of view a key distinguishing feature is that the working fluid, fuel gas provided by the OR, has a much higher specific heat than lean combustion products and more energy per unit mass of fluid can be extracted by the POGT expander than in the conventional systems. The POGT exhaust stream contains unreacted fuel that can be combusted in different bottoming ycle or used as syngas for hydrogen or other chemicals production. POGT studies include feasibility design for conversion a conventional turbine to POGT duty, and system analyses of POGT based units for production of power solely, and combined production of power and yngas/hydrogen for different applications. Retrofit design study was completed for three engines, SGT 800, SGT 400, and SGT 100, and includes: replacing the combustor with the POR, compressor downsizing for about 50% design flow rate, generator replacement with 60 90% ower output increase, and overall unit integration, and extensive testing. POGT performances for four turbines with power output up to 350 MW in POGT mode were calculated. With a POGT as the topping cycle for power generation systems, the power output from the POGT ould be increased up to 90% compared to conventional engine keeping hot section temperatures, pressures, and volumetric flows practically identical. In POGT mode, the turbine specific power (turbine net power per lb mass flow from expander exhaust) is twice the value of the onventional turbine. POGT based IGCC plant conceptual design was developed and major components have been identified. Fuel flexible fluid bed gasifier, and novel POGT unit are the key components of the 100 MW IGCC plant for co producing electricity, hydrogen and/or yngas. Plant performances were calculated for bituminous coal and oxygen blown versions. Various POGT based, natural gas fueled systems for production of electricity only, coproduction of electricity and hydrogen, and co production of electricity and syngas for gas to liquid and hemical processes were developed and evaluated. Performance calculations for several versions of these systems were conducted. 64.6 % LHV efficiency for fuel to electricity in combined cycle was achieved. Such a high efficiency arise from using of syngas from POGT exhaust s a fuel that can provide required temperature level for superheated steam generation in HRSG, as well as combustion air preheating. Studies of POGT materials and combustion instabilities in POR were conducted and results reported. Preliminary market assessment was performed, and recommendations for POGT systems applications in oil industry were defined. POGT technology is ready to proceed to the engineering prototype stage, which is recommended.

Joseph Rabovitser

2009-06-30T23:59:59.000Z

102

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

103

Integrated gasification combined cycle and steam injection gas turbine powered by biomass joint-venture evaluation  

DOE Green Energy (OSTI)

This report analyzes the economic and environmental potential of biomass integrated gasifier/gas turbine technology including its market applications. The mature technology promises to produce electricity at $55--60/MWh and to be competitive for market applications conservatively estimated at 2000 MW. The report reviews the competitiveness of the technology of a stand-alone, mature basis and finds it to be substantial and recognized by DOE, EPRI, and the World Bank Global Environmental Facility.

Sterzinger, G J [Economics, Environment and Regulation, Washington, DC (United States)

1994-05-01T23:59:59.000Z

104

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

105

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

106

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

107

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

108

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

109

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

110

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

111

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

112

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

113

Fuel cell and advanced turbine power cycle  

SciTech Connect

Solar has a vested interest in integration of gas turbines and high temperature fuels (particularly solid oxide fuel cells[SOFC]); this would be a backup for achieving efficiencies on the order of 60% with low exhaust emissions. Preferred cycle is with the fuel cell as a topping system to the gas turbine; bottoming arrangements (fuel cells using the gas turbine exhaust as air supply) would likely be both larger and less efficient unless complex steam bottoming systems are added. The combined SOFC and gas turbine will have an advantage because it will have lower NOx emissions than any heat engine system. Market niche for initial product entry will be the dispersed or distributed power market in nonattainment areas. First entry will be of 1-2 MW units between the years 2000 and 2004. Development requirements are outlined for both the fuel cell and the gas turbine.

White, D.J.

1996-12-31T23:59:59.000Z

114

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

115

Advanced Gas Turbine Guidelines: Rotating Blade Temperature Measurement System (BTMS)--Supplement No. 1: Durability Surveillance at Florida Power & Light Company's Martin Plant  

Science Conference Proceedings (OSTI)

The blade scans performed by EPRI's Blade Temperature Measurement System (BTMS) represent an important source of blade metal temperature data. These advanced gas turbine guidelines describe the design, installation, and operation of the BTMS in a utility power plant operating General Electric MS7221FA advanced gas turbines. The guidelines include an analysis of blade temperature scans as well as a summary of lessons learned under baseload operating conditions.

1999-04-26T23:59:59.000Z

116

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

117

Advanced Gas Turbine Guidelines: Data Acquisition System and Baseline Data: Durability Surveillance at Potomac Electric Power Compan y's Station H  

Science Conference Proceedings (OSTI)

Operational data provides the key resource in establishing baseline data for the new "F class" of advanced gas turbines. These guidelines describe the use of a data acquisition system (DAS) to collect operational data and the subsequent real-time and historical trend analyses of gas turbine performance. The guidelines specifically address the installation and operation of a DAS at a General Electric MS7001F turbine operating in simple-cycle peaking mode.

1999-04-26T23:59:59.000Z

118

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

119

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

120

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

Note: This page contains sample records for the topic "gas turbine power" 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

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

122

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

123

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

124

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

125

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

126

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  ...

127

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

128

System study of an MHD/gas turbine combined-cycle baseload power plant. HTGL report No. 134  

DOE Green Energy (OSTI)

The MHD/gas turbine combined-cycle system has been designed specifically for applications where the availability of cooling water is very limited. The base case systems which were studied consisted of an MHD plant with a gas turbine bottoming plant, and required no cooling water. The gas turbine plant uses only air as its working fluid and receives its energy input from the MHD exhaust gases by means of metal tube heat exchangers. In addition to the base case systems, vapor cycle variation systems were considered which included the addition of a vapor cycle bottoming plant to improve the thermal efficiency. These systems required a small amount of cooling water. The MHD/gas turbine systems were modeled with sufficient detail, using realistic component specifications and costs, so that the thermal and economic performance of the system could be accurately determined. Three cases of MHD/gas turbine systems were studied, with Case I being similar to an MHD/steam system so that a direct comparison of the performances could be made, with Case II being representative of a second generation MHD system, and with Case III considering oxygen enrichment for early commercial applications. The systems are nominally 800 MW/sub e/ to 1000 MW/sub e/ in size. The results show that the MHD/gas turbine system has very good thermal and economic performances while requiring either little or no cooling water. Compared to the MHD/steam system which has a cooling tower heat load of 720 MW, the Base Case I MHD/gas turbine system has a heat rate which is 13% higher and a cost of electricity which is only 7% higher while requiring no cooling water. Case II results show that an improved performance can be expected from second generation MHD/gas turbine systems. Case III results show that an oxygen enriched MHD/gas turbine system may be attractive for early commercial applications in dry regions of the country.

Annen, K.D.

1981-08-01T23:59:59.000Z

129

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

130

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

131

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

132

http://www.sussex.ac.uk/spru / Constructing Success in the Electric Power Industry: Flexibility and the Gas Turbine  

E-Print Network (OSTI)

This paper explains the success and failure of two technologies that generate electricity from fossil fuels. Both the Combined Cycle Gas Turbine (CCGT) and fluidised bed boiler burn fossil fuels more cleanly than more traditional technologies. Whereas the CCGT has been used for an increasing number of new power plants during the past fifteen years, the latter has struggled to attract attention outside a small-scale niche. The paper draws on economic and social constructivist approaches to technical change. It shows how a combination of economic, institutional and political factors can be used to explain success and failure. It also demonstrates the importance of technological flexibility for the long term development of the CCGT and its acceptance as the power industry’s current technology of choice.

Dr Jim Watson; Mantell Building

2001-01-01T23:59:59.000Z

133

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

134

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

135

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.

136

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

137

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

138

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.

139

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

140

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 power" 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

DIRECT FUEL CELL/TURBINE POWER PLANT  

SciTech Connect

The subMW hybrid DFC/T power plant facility was upgraded with a Capstone C60 microturbine and a state-of-the-art full size fuel cell stack. The integration of the larger microturbine extended the capability of the hybrid power plant to operate at high power ratings with a single gas turbine without the need for supplementary air. The objectives of this phase of subMW hybrid power plant tests are to support the development of process and control and to provide the insight for the design of the packaged subMW hybrid demonstration units. The development of the ultra high efficiency multi-MW power plants was focused on the design of 40 MW power plants with efficiencies approaching 75% (LHV of natural gas). The design efforts included thermodynamic cycle analysis of key gas turbine parameters such as compression ratio.

Hossein Ghezel-Ayagh

2003-05-27T23:59:59.000Z

142

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

143

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

144

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

145

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

146

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

147

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

148

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

149

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

150

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

151

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

152

Direct FuelCell/Turbine Power Plant  

SciTech Connect

This report includes the progress in development of Direct Fuel Cell/Turbine. (DFC/T.) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. FCE successfully completed testing of the pre-alpha sub-MW DFC/T power plant. This power plant was constructed by integration of a 250kW fuel cell stack and a microturbine. Following these proof-of-concept tests, a stand-alone test of the microturbine verified the turbine power output expectations at an elevated (representative of the packaged unit condition) turbine inlet temperature. Preliminary design of the packaged sub-MW alpha DFC/T unit has been completed and procurement activity has been initiated. The preliminary design of a 40 MW power plant including the key equipment layout and the site plan was completed. A preliminary cost estimate for the 40 MW DFC/T plant has also been prepared. The tests of the cascaded fuel cell concept for achieving high fuel utilizations were completed. The tests demonstrated that the concept results in higher power plant efficiency. Alternate stack flow geometries for increased power output/fuel utilization capabilities are also being evaluated.

Hossein Ghezel-Ayagh

2004-11-19T23:59:59.000Z

153

Direct FuelCell/Turbine Power Plant  

DOE Green Energy (OSTI)

This report includes the progress in development of Direct Fuel Cell/Turbine. (DFC/T.) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. FCE successfully completed testing of the pre-alpha sub-MW DFC/T power plant. This power plant was constructed by integration of a 250kW fuel cell stack and a microturbine. Following these proof-of-concept tests, a stand-alone test of the microturbine verified the turbine power output expectations at an elevated (representative of the packaged unit condition) turbine inlet temperature. Preliminary design of the packaged sub-MW alpha DFC/T unit has been completed and procurement activity has been initiated. The preliminary design of a 40 MW power plant including the key equipment layout and the site plan was completed. A preliminary cost estimate for the 40 MW DFC/T plant has also been prepared. The tests of the cascaded fuel cell concept for achieving high fuel utilizations were completed. The tests demonstrated that the concept results in higher power plant efficiency. Alternate stack flow geometries for increased power output/fuel utilization capabilities are also being evaluated.

Hossein Ghezel-Ayagh

2004-11-19T23:59:59.000Z

154

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.

155

Advanced Gas Turbine Guidelines: Vibration Monitoring and Analysis: Durability Surveillance at Potomac Electric Power Company's Stat ion H  

Science Conference Proceedings (OSTI)

The analyses performed by EPRI's Vibration Monitoring and Analysis System (VMAS) represent an important source of steady- state and transient operational data. These advanced gas turbine guidelines discuss state-of-the art vibration analysis methods, monitoring systems, and sensors as well as troubleshooting approaches for engine-related problems.

1999-04-26T23:59:59.000Z

156

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.

157

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

158

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.

159

An Integrated Framework for Gas Turbine Based Power Plant Operational Modeling and Optimization .  

E-Print Network (OSTI)

??The deregulation of the electric power market introduced a strong element of competition. Power plant operators strive to develop advanced operational strategies to maximize the… (more)

Zhao, Yongjun

2005-01-01T23:59:59.000Z

160

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

Note: This page contains sample records for the topic "gas turbine power" 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

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

162

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

Müller, Norbert

163

Testing and Performance of the Siemens V84.3A Gas Turbine in Peaking Service at Hawthorn Station of Kansas City Power & Light Compan y  

Science Conference Proceedings (OSTI)

EPRI's durability surveillance (DS) program, in place since 1991, is producing the first in-service performance and operating data on the newest high-efficiency gas turbines. This detailed investigation of the Siemens V84.3A installed at the Kansas City Power & Light (KCP&L) Hawthorn Station is providing plant personnel and the manufacturer with valuable information for solving initial problems, and will help all power producers specify, operate, and maintain a new generation of high-performance gas turb...

1998-12-31T23:59:59.000Z

164

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

165

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

166

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

167

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

168

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

169

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

170

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

171

DIRECT FUEL CELL/TURBINE POWER PLANT  

SciTech Connect

This report includes the progress in development of Direct FuelCell/Turbine{reg_sign} (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. The operation of sub-MW hybrid Direct FuelCell/Turbine power plant test facility with a Capstone C60 microturbine was initiated in March 2003. The inclusion of the C60 microturbine extended the range of operation of the hybrid power plant to higher current densities (higher power) than achieved in previous tests using a 30kW microturbine. The design of multi-MW DFC/T hybrid systems, approaching 75% efficiency on natural gas, was initiated. A new concept was developed based on clusters of One-MW fuel cell modules as the building blocks. System analyses were performed, including systems for near-term deployment and power plants with long-term ultra high efficiency objectives. Preliminary assessment of the fuel cell cluster concept, including power plant layout for a 14MW power plant, was performed.

Hossein Ghezel-Ayagh

2004-11-01T23:59:59.000Z

172

DIRECT FUEL CELL/TURBINE POWER PLANT  

DOE Green Energy (OSTI)

This report includes the progress in development of Direct FuelCell/Turbine{reg_sign} (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. The operation of sub-MW hybrid Direct FuelCell/Turbine power plant test facility with a Capstone C60 microturbine was initiated in March 2003. The inclusion of the C60 microturbine extended the range of operation of the hybrid power plant to higher current densities (higher power) than achieved in previous tests using a 30kW microturbine. The design of multi-MW DFC/T hybrid systems, approaching 75% efficiency on natural gas, was initiated. A new concept was developed based on clusters of One-MW fuel cell modules as the building blocks. System analyses were performed, including systems for near-term deployment and power plants with long-term ultra high efficiency objectives. Preliminary assessment of the fuel cell cluster concept, including power plant layout for a 14MW power plant, was performed.

Hossein Ghezel-Ayagh

2004-11-01T23:59:59.000Z

173

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

174

DIRECT FUEL/CELL/TURBINE POWER PLANT  

SciTech Connect

This report includes the progress in development of Direct FuelCell/Turbine{reg_sign} (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. FCE successfully completed testing of the pre-alpha DFC/T hybrid power plant. This power plant was constructed by integration of a 250kW fuel cell stack and a microturbine. The tests of the cascaded fuel cell concept for achieving high fuel utilizations were completed. The tests demonstrated that the concept results in higher power plant efficiency. Also, the preliminary design of a 40 MW power plant including the key equipment layout and the site plan was completed.

Hossein Ghezel-Ayagh

2004-05-01T23:59:59.000Z

175

DIRECT FUEL/CELL/TURBINE POWER PLANT  

DOE Green Energy (OSTI)

This report includes the progress in development of Direct FuelCell/Turbine{reg_sign} (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. FCE successfully completed testing of the pre-alpha DFC/T hybrid power plant. This power plant was constructed by integration of a 250kW fuel cell stack and a microturbine. The tests of the cascaded fuel cell concept for achieving high fuel utilizations were completed. The tests demonstrated that the concept results in higher power plant efficiency. Also, the preliminary design of a 40 MW power plant including the key equipment layout and the site plan was completed.

Hossein Ghezel-Ayagh

2004-05-01T23:59:59.000Z

176

New Technology for America`s Electric Power Industry. Emissions reduction in gas turbines  

DOE Green Energy (OSTI)

Argonne National Laboratory is examining alternatives to straight natural gas firing. Research has shown that the addition of certain catalytic agents, such as in hydrogen co-firing, shows promise. When hydrogen co-firing is used in tandem with steam injection, a decrease in both CO and NO{sub x} emissions has been observed. In-process hydrogen production and premixing with the natural gas fuel are also being explored.

NONE

1995-04-01T23:59:59.000Z

177

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

178

Wind and solar powered turbine  

SciTech Connect

A power generating station having a generator driven by solar heat assisted ambient wind is disclosed. A first plurality of radially extending air passages direct ambient wind to a radial flow wind turbine disposed in a centrally located opening in a substantially disc-shaped structure. A solar radiation collecting surface having black bodies is disposed above the first plurality of air passages and in communication with a second plurality of radial air passages. A cover plate enclosing the second plurality of radial air passages is transparent so as to permit solar radiation to effectively reach the black bodies. The second plurality of air passages direct ambient wind and thermal updrafts generated by the black bodies to an axial flow turbine which also derives additional motive power from the air mass exhausted by the radial flow turbine. The rotating shaft of the turbines drive the generator. The solar and wind driven power generating system operates in electrical cogeneration mode with a fuel powered prime mover. The system is particularly adapted to satisfy the power requirements of a relatively small community located in a geographic area having favorable climatic conditions for wind and solar powered power generation.

Wells, I.D.; Holmes, M.; Kohn, J.L.

1984-02-28T23:59:59.000Z

179

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

180

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

Note: This page contains sample records for the topic "gas turbine power" 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

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,

182

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

183

Gas Turbine Condition Monitoring and Predictive Maintenance Capability Analysis Between Aviation and Power Generation Industries  

Science Conference Proceedings (OSTI)

This study compares and contrasts aviation and power generation condition monitoring and fault diagnosis. The report provides an overview of the technology, process, sensor suite and decision-making processes for both industries. The study highlights the level of decision automation and the structure to automatically initiate a maintenance process in aviation as one of the key differences between the two industries. This automation has important potential cost and operational benefits for the power gener...

2007-12-21T23:59:59.000Z

184

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

185

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

186

Evaluation of Thermal Zero Liquid Discharge Treatment Technologies for Combined Cycle Gas Turbine Power Plants  

Science Conference Proceedings (OSTI)

A study was conducted to identify and update key details of zero liquid discharge (ZLD) water management systems currently operating at U.S. gas-fired combined cycle generating stations (CC). The study focused on not only the technologies applied, but also on the advantages and shortcomings of the various processes and summarized the lessons learned from the operating systems. Most ZLD's were found to employ one of four different types of water pretreatment process assemblies consisting of the following:...

2011-12-19T23:59:59.000Z

187

HTGR-GT closed-cycle gas turbine: a plant concept with inherent cogeneration (power plus heat production) capability  

SciTech Connect

The high-grade sensible heat rejection characteristic of the high-temperature gas-cooled reactor-gas turbine (HTGR-GT) plant is ideally suited to cogeneration. Cogeneration in this nuclear closed-cycle plant could include (1) bottoming Rankine cycle, (2) hot water or process steam production, (3) desalination, and (4) urban and industrial district heating. This paper discusses the HTGR-GT plant thermodynamic cycles, design features, and potential applications for the cogeneration operation modes. This paper concludes that the HTGR-GT plant, which can potentially approach a 50% overall efficiency in a combined cycle mode, can significantly aid national energy goals, particularly resource conservation.

McDonald, C.F.

1980-04-01T23:59:59.000Z

188

Design of experiment and Montecarlo simulation as support for gas turbine power plant availabilty estimation  

Science Conference Proceedings (OSTI)

Maintenance is an important aspect in order to guarantee the efficiency of industrial facilities. For power plants the high availability ratios can be obtained only with preventive maintenance but the result costs increases rapidly. In order to reduce ... Keywords: design of experiment, fuzzy logic, model estimation, montecarlo simulation, reliability

Enrico Briano; Claudia Caballini; Pietro Giribone; Roberto Revetria

2010-05-01T23:59:59.000Z

189

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

190

High efficiency carbonate fuel cell/turbine hybrid power cycle  

Science Conference Proceedings (OSTI)

The hybrid power cycle studies were conducted to identify a high efficiency, economically competitive system. A hybrid power cycle which generates power at an LHV efficiency > 70% was identified that includes an atmospheric pressure direct carbonate fuel cell, a gas turbine, and a steam cycle. In this cycle, natural gas fuel is mixed with recycled fuel cell anode exhaust, providing water for reforming fuel. The mixed gas then flows to a direct carbonate fuel cell which generates about 70% of the power. The portion of the anode exhaust which is not recycled is burned and heat transferred through a heat exchanger (HX) to the compressed air from a gas turbine. The heated compressed air is then heated further in the gas turbine burner and expands through the turbine generating 15% of the power. Half the exhaust from the turbine provides air for the anode exhaust burner. All of the turbine exhaust eventually flows through the fuel cell cathodes providing the O2 and CO2 needed in the electrochemical reaction. Exhaust from the cathodes flows to a steam system (heat recovery steam generator, staged steam turbine generating 15% of the cycle power). Simulation of a 200 MW plant with a hybrid power cycle had an LHV efficiency of 72.6%. Power output and efficiency are insensitive to ambient temperature, compared to a gas turbine combined cycle; NOx emissions are 75% lower. Estimated cost of electricity for 200 MW is 46 mills/kWh, which is competitive with combined cycle where fuel cost is > $5.8/MMBTU. Key requirement is HX; in the 200 MW plant studies, a HX operating at 1094 C using high temperature HX technology currently under development by METC for coal gassifiers was assumed. A study of a near term (20 MW) high efficiency direct carbonate fuel cell/turbine hybrid power cycle has also been completed.

Steinfeld, G.; Maru, H.C. [Energy Research Corp., Danbury, CT (United States); Sanderson, R.A. [Sanderson (Robert) and Associates, Wethersfield, CT (United States)

1996-07-01T23:59:59.000Z

191

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

192

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.

193

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

194

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

195

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

196

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

197

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

198

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

199

DIRECT FUELCELL/TURBINE POWER PLANT  

DOE Green Energy (OSTI)

This report summarizes the progress made in development of Direct FuelCell/Turbine{reg_sign} (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. Detailed design of the packaged sub-MW alpha DFC/T unit has been completed for mechanical and piping layouts and for structural drawings. Procurement activities continued with delivery of major equipment items. Fabrication of the packaged sub-MW alpha DFC/T unit has been initiated. Details of the process control philosophy were defined and control software programming was initiated.

Hossein Shezel-Ayagh

2005-05-01T23:59:59.000Z

200

DIRECT FUELCELL/TURBINE POWER PLANT  

SciTech Connect

This report summarizes the progress made in development of Direct FuelCell/Turbine{reg_sign} (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. Detailed design of the packaged sub-MW alpha DFC/T unit has been completed for mechanical and piping layouts and for structural drawings. Procurement activities continued with delivery of major equipment items. Fabrication of the packaged sub-MW alpha DFC/T unit has been initiated. Details of the process control philosophy were defined and control software programming was initiated.

Hossein Shezel-Ayagh

2005-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine power" 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

HTGR power plant turbine-generator load control system  

SciTech Connect

A control system is disclosed for a high temperature gas cooled reactor power plant, wherein a steam source derives heat from the reactor coolant gas to generate superheated and reheated steam in respective superheater and reheater sections that are included in the steam source. Each of dual turbine-generators includes a high pressure turbine to pass superheated steam and an associated intermediate low pressure turbine to pass reheated steam. A first admission valve means is connected to govern a flow of superheated steam through a high pressure turbine, and a second admission valve means is connected to govern a flow of reheated steam through an intermediate-low pressure turbine. A bypass line and bypass valve means connected therein are connected across a second admission valve means and its intermediate-low pressure turbine. The second admission valve means is positioned to govern the steam flow through the intermediate-low pressure turbine in accordance with the desired power output of the turbine-generator. In response to the steam flow through the intermediate-low pressure turbine, the bypass valve means is positioned to govern the steam flow through the bypass line to maintain a desired minimum flow through the reheater section at times when the steam flow through the intermediate-low pressure turbine is less than such minimum. The power output of the high pressure turbine is controlled by positioning the first admission valve means in predetermined proportionality with the desired power output of the turbine-generator, thereby improving the accuracy of control of the power output of the high pressure turbine at low load levels.

Braytenbah, A.S.; Jaegtnes, K.O.

1976-12-28T23:59:59.000Z

202

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

203

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

204

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

205

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 ...

206

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

207

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 ...

208

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

209

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

210

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

211

Application of the Concept of Exergy in the Selection of a Gas-Turbine Engine for Combined-Cycle Power Plant Design  

E-Print Network (OSTI)

It has been shown that the second-law efficiency of a gas-turbine engine may be calculated in a rational and simple manner by making use of an algebraic equation giving the exergy content of turbine exhaust as a function of exhaust temperature only. Since a high second-law efficiency of a gas-turbine engine is necessary to have high overall system efficiency, the decision maker may thus make use of the procedure presented in this work to quickly identify those gas-turbine engines that could be good candidates for combined-cycle operation.

Huang, F. F.; Naumowicz, T.

2001-05-01T23:59:59.000Z

212

DIRECT FUEL CELL/TURBINE POWER PLANT  

DOE Green Energy (OSTI)

In this reporting period, a milestone was achieved by commencement of testing and operation of the sub-scale hybrid direct fuel cell/turbine (DFC/T{reg_sign}) power plant. The operation was initiated subsequent to the completion of the construction of the balance-of-plant (BOP) and implementation of process and control tests of the BOP for the subscale DFC/T hybrid system. The construction efforts consisted of finishing the power plant insulation and completion of the plant instrumentation including the wiring and tubing required for process measurement and control. The preparation work also included the development of procedures for facility shake down, conditioning and load testing of the fuel cell, integration of the microturbine, and fuel cell/gas turbine load tests. At conclusion of the construction, the process and control (PAC) tests of BOP, including the microturbine, were initiated.

Hossein Ghezel-Ayagh

2003-05-23T23:59:59.000Z

213

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

214

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

215

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

216

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

217

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

218

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

219

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

220

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

Note: This page contains sample records for the topic "gas turbine power" 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.


221

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

222

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

223

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,...

224

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 ...

225

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

226

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

227

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

228

High efficiency fuel cell/advanced turbine power cycles  

Science Conference Proceedings (OSTI)

The following figures are included: Westinghouse (W.) SOFC pilot manufacturing facility; cell scale-up plan; W. 25 kW SOFC unit at the utility`s facility on Rokko Island; pressure effect on SOFC power and efficiency; SureCELL{trademark} vs conventional gas turbine plants; SureCELL{trademark} product line for distributed power applications; 20 MW pressurized SOFC/gas turbine power plant; 10 MW SOFT/CT power plant; SureCELL{trademark} plant concept design requirements; and W. SOFC market entry.

Morehead, H.

1996-12-31T23:59:59.000Z

229

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

230

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

231

NETL: Turbine Projects - Advanced Coal Power Systems  

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

Advanced Coal Power Systems Turbine Projects Advanced Coal Power Systems SOFC Hybrid System for Distributed Power Generation DataFact Sheets SOFC Hybrid System PDF In-House FCT...

232

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 ...

233

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

234

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

235

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

236

Thermal chemical recuperation method and system for use with gas turbine systems  

DOE Patents (OSTI)

A system and method are disclosed for efficiently generating power using a gas turbine, a steam generating system and a reformer. The gas turbine receives a reformed fuel stream and an air stream and produces shaft power and exhaust. Some of the thermal energy from the turbine exhaust is received by the reformer. The turbine exhaust is then directed to the steam generator system that recovers thermal energy from it and also produces a steam flow from a water stream. The steam flow and a fuel stream are directed to the reformer that reforms the fuel stream and produces the reformed fuel stream used in the gas turbine. 2 figs.

Yang, W.C.; Newby, R.A.; Bannister, R.L.

1999-04-27T23:59:59.000Z

237

Thermal chemical recuperation method and system for use with gas turbine systems  

DOE Patents (OSTI)

A system and method for efficiently generating power using a gas turbine, a steam generating system (20, 22, 78) and a reformer. The gas turbine receives a reformed fuel stream (74) and an air stream and produces shaft power and exhaust. Some of the thermal energy from the turbine exhaust is received by the reformer (18). The turbine exhaust is then directed to the steam generator system that recovers thermal energy from it and also produces a steam flow from a water stream. The steam flow and a fuel stream are directed to the reformer that reforms the fuel stream and produces the reformed fuel stream used in the gas turbine.

Yang, Wen-Ching (Export, PA); Newby, Richard A. (Pittsburgh, PA); Bannister, Ronald L. (Winter Springs, FL)

1999-01-01T23:59:59.000Z

238

Startup and Testing of the ABB GT24 Gas Turbine in Peaking Service at the Gilbert Station of GPU Energy  

Science Conference Proceedings (OSTI)

Worldwide pressures to reduce power generation costs have led domestic and foreign manufacturers to build high-efficiency gas turbines using leading edge technology. To ensure the staying power of these turbines, EPRI launched a multiyear Durability Surveillance Program in 1991 for monitoring advanced industrial gas turbines currently produced by major turbine manufacturers. This report discusses the startup and initial site testing of a new ABB Model GT24 combustion turbine at the Gilbert Station, opera...

1997-12-11T23:59:59.000Z

239

Advanced Gas Turbine Guidelines: Startup and Operations of the Siemens 84.3A in Peaking Service  

Science Conference Proceedings (OSTI)

Worldwide pressures to reduce power generation costs have led domestic and foreign manufacturers to build high-efficiency gas turbines using leading-edge technology. To assure the staying power of these turbines, EPRI launched a multi-year Durability Surveillance Program in 1991 to monitor advanced industrial gas turbines currently produced by major turbine manufacturers. This report discusses the startup and initial site testing of a new Siemens Model V84.3A combustion turbine at the Hawthorn Station op...

1997-12-24T23:59:59.000Z

240

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

Note: This page contains sample records for the topic "gas turbine power" 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

CONCEPTUAL STUDIES OF A FUEL-FLEXIBLE LOW-SWIRL COMBUSTION SYSTEM FOR THE GAS TURBINE IN CLEAN COAL POWER PLANTS  

SciTech Connect

This paper reports the results of preliminary analyses that show the feasibility of developing a fuel flexible (natural gas, syngas and high-hydrogen fuel) combustion system for IGCC gas turbines. Of particular interest is the use of Lawrence Berkeley National Laboratory's DLN low swirl combustion technology as the basis for the IGCC turbine combustor. Conceptual designs of the combustion system and the requirements for the fuel handling and delivery circuits are discussed. The analyses show the feasibility of a multi-fuel, utility-sized, LSI-based, gas turbine engine. A conceptual design of the fuel injection system shows that dual parallel fuel circuits can provide range of gas turbine operation in a configuration consistent with low pollutant emissions. Additionally, several issues and challenges associated with the development of such a system, such as flashback and auto-ignition of the high-hydrogen fuels, are outlined.

Smith, K.O.; Littlejohn, David; Therkelsen, Peter; Cheng, Robert K.; Ali, S.

2009-11-30T23:59:59.000Z

242

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

243

Steam turbines for cogeneration power plants  

SciTech Connect

Steam turbines for cogeneration plants may carry a combination of industrial, space heating, cooling and domestic hot water loads. These loads are hourly, weekly, and seasonally irregular and require turbines of special design to meet the load duration curve, while generating electric power. Design features and performance characteristics of one of the largest cogeneration turbine units for combined electric generation and district heat supply are presented. Different modes of operation of the cogeneration turbine under variable load conditions are discussed in conjunction with a heat load duration curve for urban heat supply. Problems associated with the retrofitting of existing condensing type turbines for cogeneration applications are identified. 4 refs.

Oliker, I.

1980-04-01T23:59:59.000Z

244

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

245

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

246

Gas turbine electric plant construction cost and annual production expenses. First annual publication, 1972  

SciTech Connect

By the end of 1972, gas turbine power plants owned and operated by U.S. utilities had a capacity of 27,918 MW. Data from the 1972 annual reports filed with the Federal Power Commission by utility systems are presented which show the plant cost, generating expenses, capacity and generation, and plant and equipment characteristics of 299 gas turbine plants. (LCL)

1972-01-01T23:59:59.000Z

247

Dept. of Energy/Dept. of Transportation Gas Turbine Transit Bus Demonstration Program: program plan  

SciTech Connect

This document is the program plan for a cooperative project of the Urban Mass Transportation Administration (UMTA) of the Department of Transportation and the Division of Transportation Energy Conservation (TEC) of the Department of Energy to test and evaluate the use of gas-turbine engines in transit buses. UMTA is responsible for furnishing buses from UMTA grantees, technical direction for bus/engine integration, and coordination of operational use of buses in selected cities. TEC is responsible for providing gas turbines, data acquisition/reduction services, and management for the complete project. The project will be carried out in three phases. In Phase I, prototype turbine engines will be used. One turbine-powered bus and diesel-powered bus will be tested at a test facility to obtain baseline data. Five turbine-powered buses will be evaluated in revenue service in one city. In Phase II, preproduction turbine engines will be used. One turbine-powered bus and diesel-powered bus will be baseline tested and ten turbine-powered buses will be evaluated in two cities. In Phase III, production gas turbine engines will be used. Only the turbine-powered bus will run baseline tests in this phase. Ten turbine-powered buses will be evaluated in two cities.

1978-04-01T23:59:59.000Z

248

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

249

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

250

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

251

Application of RBF-type ARX Modeling and Control to Gas Turbine Combined Cycle SCR Systems  

E-Print Network (OSTI)

Application of RBF-type ARX Modeling and Control to Gas Turbine Combined Cycle SCR Systems Y, nonlinear model-based predictive control, energy saving. 1. INTRODUCTION In Japan, GTCC(Gas Turbine Combined gas-firing GTCC power plant is most effective in terms of thermal efficiency and lower CO2 energy

Ozaki, Tohru

252

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

253

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

254

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

255

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

256

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

257

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.

258

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

259

High efficiency carbonate fuel cell/turbine hybrid power cycles  

SciTech Connect

Carbonate fuel cells developed in commercial 2.85 MW size, have an efficiency of 57.9%. Studies of higher efficiency hybrid power cycles were conducted to identify an economically competitive system and an efficiency over 65%. A hybrid power cycle was identified that includes a direct carbonate fuel cell, a gas turbine, and a steam cycle, which generates power at a LHV efficiency over 70%; it is called a Tandem Technology Cycle (TTC). In a TTC operating on natural gas fuel, 95% of the fuel is mixed with recycled fuel cell anode exhaust, providing water for reforming the fuel, and flows to a direct carbonate fuel cell system which generates 72% of the power. The portion of fuel cell anode exhaust not recycled, is burned and heat is transferred to compressed air from a gas turbine, heating it to 1800 F. The stream is then heated to 2000 F in gas turbine burner and expands through the turbine generating 13% of the power. Half the gas turbine exhaust flows to anode exhaust burner and the rest flows to the fuel cell cathodes providing the O2 and CO2 needed in the electrochemical reaction. Studies of the TTC for 200 and 20 MW size plants quantified performance, emissions and cost-of-electricity, and compared the TTC to gas turbine combined cycles. A 200-MW TTC plant has an efficiency of 72.6%; estimated cost of electricity is 45.8 mills/kWhr. A 20-MW TTC plant has an efficiency of 65.2% and a cost of electricity of 50 mills/kWhr.

Steinfeld, G.

1996-12-31T23:59:59.000Z

260

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

Note: This page contains sample records for the topic "gas turbine power" 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

Small Gas Turbines for Distributed Generation Markets: Technology, Products, and Business Issues  

Science Conference Proceedings (OSTI)

Small gas turbines (300 kW to 5 MW) offer an attractive way for utilities and energy service companies to generate electric power within distribution grids and for consumers to generate their own power. Distributed generation also benefits utilities by deferring or avoiding costly expansion of the power transmission and distribution system, which could allow them to offer customers lower cost power. Gas turbines process more power-generation cycle air per unit size and weight of machine than do reciproca...

2000-12-06T23:59:59.000Z

262

NETL: News Release - DOE-Fossil Energy: World's Most Advanced Gas Turbine  

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

February 18, 2000 February 18, 2000 DOE-Fossil Energy: World's Most Advanced Gas Turbine Now Ready to Cross Commercial Threshold Secretary Richardson Cites Success of Government-Industry Partnership For natural gas turbines - the technology likely to dominate the growing market for new electric power generation - the future was unveiled today in Greenville, South Carolina. GE's MS7001H Advanced Gas Turbine The 4000-ton Model MS7001H advanced gas turbine is the size of a locomotive. Secretary of Energy Bill Richardson and U.S. Senator Ernest Hollings joined General Electric today in announcing that the company's newest H System™ gas turbine, the most advanced combustion turbine in the world, is ready to cross the commercial threshold. "Today, we are seeing the most advanced combustion turbine anywhere,

263

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

264

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

265

Program on Technology Innovation: Erosion Resistant Coatings for Gas and Steam Turbines - Advanced Nano-Coatings and Vendor Evaluati on Results  

Science Conference Proceedings (OSTI)

Erosion of steam turbine blades and gas turbine compressor blades costs power producers millions of dollars each year. Improved mitigation techniques to reduce erosion damage will improve turbine efficiency and reduce maintenance downtime.

2009-03-31T23:59:59.000Z

266

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

267

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

268

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

269

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

270

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

271

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

272

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

273

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

274

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

275

Main features of direct cycle helium gas turbines integrated with a high temperature reactor  

SciTech Connect

From international nuclear industries fair; Basel, Switzerland (16 Oct 1972). The main features and advantages of direct cycle helium gas turbines integrated with a high temperature reactor are presented. The proposed design concept is based on a logical extension of existirg knowledge and experience on currently built gas cooled reactors and industrial gas turbines. The direct cycle gas turbine offers many advantages in the form of high reliability, safety and simplicity; it emerges as a potential competitor to the main power generation prime mover, the steam turbine. (auth)

Burylo, P.

1972-01-01T23:59:59.000Z

276

Apparatus and method for partial-load operation of a combined gas and steam turbine plant  

SciTech Connect

Apparatus and method are disclosed for the partial load operation of a combined gas turbine and steam turbine plant, including a shaft being connected to the gas turbine and drivable at a given nominal speed of rotation, a first generator being connected to the shaft and electrically connectible to an electric network, a compressor being connected to the shaft and connected upstream of the gas turbine in gas flow direction, a heat exchanger having an output and a variable heat supply and being connected upstream of the gas turbine in gas flow direction, a steam generator for the steam turbine being connected downstream of the gas turbine in gas flow direction for receiving exhaust gases therefrom, a second generator being connected to the steam turbine and electrically connectible to the electric network for supplying given nominal power thereto along with the first generator, means for giving to the electric network and taking away from the network at least part of the nominal power if the shaft rotates at less than the nominal speed of rotation, and means for reducing the speed of rotation of the gas turbine for preventing a substantial drop in temperature at the output of the heat exchanger if the heat supply of the heat exchanger is reduced.

Becker, B.; Finckh, H.; Meyer-pittroff, R.

1982-07-20T23:59:59.000Z

277

GER 4194 - The 7FB: The Next Evolution of the F Gas Turbine  

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

The 7FB: The 7FB: The Next Evolution of the F Gas Turbine Roberta Eldrid Lynda Kaufman Paul Marks GE Power Systems Schenectady, NY GER-4194 g Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Critical Issues in the F Evolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Life-Cycle Economics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 The F Series Gas Turbine Experience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Reliability and Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

278

BIOMASS AND BLACK LIQUOR GASIFIER/GAS TURBINE COGENERATION AT PULP AND PAPER MILLS  

E-Print Network (OSTI)

BIOMASS AND BLACK LIQUOR GASIFIER/GAS TURBINE COGENERATION AT PULP AND PAPER MILLS ERIC D. LARSON Milano Milan, Italy ABSTRACT Cogeneration of heat and power at kraft pulp/paper mills from on-site bioma modeling of gasifier/gas turbine pulp-mill cogeneration systemsusing gasifier designs under commercial

279

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

280

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

Note: This page contains sample records for the topic "gas turbine power" 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

Computational Predictions and Experimental Measurements of the Performance of a Louver Particle Separator for Use in Gas Turbine Engines.  

E-Print Network (OSTI)

??Gas turbine engines that power aircraft operate in harsh environments where solid particles, such as sand, are ingested into the engine. Solid particles damage aircraft… (more)

Musgrove, Grant

2009-01-01T23:59:59.000Z

282

An experimental study of heat transfer in the rectangular coolant passages of a gas turbine rotor blade.  

E-Print Network (OSTI)

??Modern gas turbines have high inlet temperatures to harness maximum power output, which causes different components to experience severe thermal stresses and fatigue. To achieve… (more)

Uddin, Mohammed Jalal

2012-01-01T23:59:59.000Z

283

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 ...

284

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 ...

285

Gas Turbine/Solar Parabolic Trough Hybrid Design Using Molten Salt Heat Transfer Fluid: Preprint  

DOE Green Energy (OSTI)

Parabolic trough power plants can provide reliable power by incorporating either thermal energy storage (TES) or backup heat from fossil fuels. This paper describes a gas turbine / parabolic trough hybrid design that combines a solar contribution greater than 50% with gas heat rates that rival those of natural gas combined-cycle plants. Previous work illustrated benefits of integrating gas turbines with conventional oil heat-transfer-fluid (HTF) troughs running at 390?C. This work extends that analysis to examine the integration of gas turbines with salt-HTF troughs running at 450 degrees C and including TES. Using gas turbine waste heat to supplement the TES system provides greater operating flexibility while enhancing the efficiency of gas utilization. The analysis indicates that the hybrid plant design produces solar-derived electricity and gas-derived electricity at lower cost than either system operating alone.

Turchi, C. S.; Ma, Z.

2011-08-01T23:59:59.000Z

286

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

287

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

288

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

289

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

290

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

291

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

292

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

293

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

294

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

295

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

296

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

297

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

298

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

299

Advances in steam turbine technology for power generation  

SciTech Connect

This book contains articles presented at the 1990 International Joint Power Generation Conference. It is organized under the following headings: Solid particle erosion in steam turbines, Steam turbine failure analysis, Steam turbine upgrades, steam turbine blading development, Boiler feed pumps and auxiliary steam turbine drives.

Bellanca, C.P. (Dayton Power and Light Company (US))

1990-01-01T23:59:59.000Z

300

PowerJet Wind Turbine Project  

SciTech Connect

PROJECT OBJECTIVE The PowerJet wind turbine overcomes problems characteristic of the small wind turbines that are on the market today by providing reliable output at a wide range of wind speeds, durability, silent operation at all wind speeds, and bird-safe operation. Prime Energy�s objective for this project was to design and integrate a generator with an electrical controller and mechanical controls to maximize the generation of electricity by its wind turbine. The scope of this project was to design, construct and test a mechanical back plate to control rotational speed in high winds, and an electronic controller to maximize power output and to assist the base plate in controlling rotational speed in high winds. The test model will continue to operate beyond the time frame of the project, with the ultimate goal of manufacturing and marketing the PowerJet worldwide. Increased Understanding of Electronic & Mechanical Controls Integrated With Electricity Generator The PowerJet back plate begins to open as wind speed exceeds 13.5 mps. The pressure inside the turbine and the turbine rotational speed are held constant. Once the back plate has fully opened at approximately 29 mps, the controller begins pulsing back to the generator to limit the rotational speed of the turbine. At a wind speed in excess of 29 mps, the controller shorts the generator and brings the turbine to a complete stop. As the wind speed subsides, the controller releases the turbine and it resumes producing electricity. Data collection and instrumentation problems prevented identification of the exact speeds at which these events occur. However, the turbine, controller and generator survived winds in excess of 36 mps, confirming that the two over-speed controls accomplished their purpose. Technical Effectiveness & Economic Feasibility Maximum Electrical Output The output of electricity is maximized by the integration of an electronic controller and mechanical over-speed controls designed and tested during the course of this project. The output exceeds that of the PowerJet�s 3-bladed counterparts (see Appendix). Durability All components of the PowerJet turbine assembly�including the electronic and mechanical controls designed, manufactured and field tested during the course of this project�proved to be durable through severe weather conditions, with constant operation and no interruption in energy production. Low Cost Materials for the turbine, generator, tower, charge controllers and ancillary parts are available at reasonable prices. Fabrication of these parts is also readily available worldwide. The cost of assembling and installing the turbine is reduced because it has fewer parts and requires less labor to manufacture and assemble, making it competitively priced compared with turbines of similar output manufactured in the U.S. and Europe. The electronic controller is the unique part to be included in the turbine package. The controllers can be manufactured in reasonably-sized production runs to keep the cost below $250 each. The data logger and 24 sensors are for research only and will be unnecessary for the commercial product. Benefit To Public The PowerJet wind-electric system is designed for distributed wind generation in 3 and 4 class winds. This wind turbine meets DOE�s requirements for a quiet, durable, bird-safe turbine that eventually can be deployed as a grid-connected generator in urban and suburban settings. Results As described more fully below and illustrated in the Appendices, the goals and objectives outlined in 2060 SOPO were fully met. Electronic and mechanical controls were successfully designed, manufactured and integrated with the generator. The turbine, tower, controllers and generators operated without incident throughout the test period, surviving severe winter and summer weather conditions such as extreme temperatures, ice and sustained high winds. The electronic controls were contained in weather-proof electrical boxes and the elec

Bartlett, Raymond J

2008-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine power" 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

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

302

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

303

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

304

Substantially self-powered fluid turbines  

SciTech Connect

A method is provided for substantially self-powering turbines by expanding compressed gases released downhole or in adjacent formations. These gases do work in the turbines as the gases expand toward atmospheric pressure at the earth's surface. The method offers alternative and supplemental approaches to recovering hydrocarbon gases, water vapor, carbon dioxide, other gases, and petroleum from watered out wells and from deep or hot wells.

Elliott, G. R. B.; Houseman, B. L.; McDaniel, W.

1985-07-30T23:59:59.000Z

305

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

306

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

307

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

308

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

309

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

310

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 ...

311

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...

312

Direct FuelCell/Turbine Power Plant  

DOE Green Energy (OSTI)

This report summarizes the progress made in development of Direct FuelCell/Turbine (DFC/T{reg_sign}) power plants for generation of clean power at very high efficiencies. The DFC/T system employs an indirectly heated Turbine Generator to supplement fuel cell generated power. The concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, minimal emissions, reduced carbon dioxide release to the environment, simplicity in design, direct reforming internal to the fuel cell, and potential cost competitiveness with existing combined cycle power plants. Proof-of-concept tests using a sub-MW-class DFC/T power plant at FuelCell Energy's (FCE) Danbury facility were conducted to validate the feasibility of the concept and to measure its potential for electric power production. A 400 kW-class power plant test facility was designed and retrofitted to conduct the tests. The initial series of tests involved integration of a full-size (250 kW) Direct FuelCell stack with a 30 kW Capstone microturbine. The operational aspects of the hybrid system in relation to the integration of the microturbine with the fuel cell, process flow and thermal balances, and control strategies for power cycling of the system, were investigated. A subsequent series of tests included operation of the sub-MW Direct FuelCell/Turbine power plant with a Capstone C60 microturbine. The C60 microturbine extended the range of operation of the hybrid power plant to higher current densities (higher power) than achieved in initial tests using the 30kW microturbine. The proof-of-concept test results confirmed the stability and controllability of operating a fullsize (250 kW) fuel cell stack in combination with a microturbine. Thermal management of the system was confirmed and power plant operation, using the microturbine as the only source of fresh air supply to the system, was demonstrated. System analyses of 40 MW DFC/T hybrid systems, approaching 75% efficiency on natural gas, were carried out using CHEMCAD simulation software. The analyses included systems for near-term and long-term deployment. A new concept was developed that was based on clusters of one-MW fuel cell modules as the building blocks. The preliminary design of a 40 MW power plant, including the key equipment layout and the site plan, was completed. The process information and operational data from the proof-of-concept tests were used in the design of 40 MW high efficiency DFC/T power plants. A preliminary cost estimate for the 40 MW DFC/T plant was also prepared. Pilot-scale tests of the cascaded fuel cell concept for achieving high fuel utilizations were conducted. The tests demonstrated that the concept has the potential to offer higher power plant efficiency. Alternate stack flow geometries for increased power output and fuel utilization capabilities were also evaluated. Detailed design of the packaged sub-MW DFC/T Alpha Unit was completed, including equipment and piping layouts, instrumentation, electrical, and structural drawings. The lessons learned from the proof-of-concept tests were incorporated in the design of the Alpha Unit. The sub-MW packaged unit was fabricated, including integration of the Direct FuelCell{reg_sign} (DFC{reg_sign}) stack module with the mechanical balance-of-plant and electrical balance-of-plant. Factory acceptance tests of the Alpha DFC/T power plant were conducted at Danbury, CT. The Alpha Unit achieved an unsurpassed electrical efficiency of 58% (LHV natural gas) during the factory tests. The resulting high efficiency in conversion of chemical energy to electricity far exceeded any sub-MW class power generation equipment presently in the market. After successful completion of the factory tests, the unit was shipped to the Billings Clinic in Billings, MT, for field demonstration tests. The DFC/T unit accomplished a major achievement by successfully completing 8000 hours of operation at the Billings site. The Alpha sub-MW DF

Hossein Ghezel-Ayagh

2008-09-30T23:59:59.000Z

313

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

314

Assessment of coal gasification/hot gas cleanup based advanced gas turbine systems  

SciTech Connect

The major objectives of the joint SCS/DOE study of air-blown gasification power plants with hot gas cleanup are to: (1) Evaluate various power plant configurations to determine if an air-blown gasification-based power plant with hot gas cleanup can compete against pulverized coal with flue gas desulfurization for baseload expansion at Georgia Power Company's Plant Wansley; (2) determine if air-blown gasification with hot gas cleanup is more cost effective than oxygen-blown IGCC with cold gas cleanup; (3) perform Second-Law/Thermoeconomic Analysis of air-blown IGCC with hot gas cleanup and oxygen-blown IGCC with cold gas cleanup; (4) compare cost, performance, and reliability of IGCC based on industrial gas turbines and ISTIG power island configurations based on aeroderivative gas turbines; (5) compare cost, performance, and reliability of large (400 MW) and small (100 to 200 MW) gasification power plants; and (6) compare cost, performance, and reliability of air-blown gasification power plants using fluidized-bed gasifiers to air-blown IGCC using transport gasification and pressurized combustion.

1990-12-01T23:59:59.000Z

315

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

316

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

317

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

318

Assessment of Inlet Cooling to Enhance Output of a Fleet of Gas Turbines  

E-Print Network (OSTI)

An analysis was made to assess the potential enhancement of a fleet of 14 small gas turbines' power output by employing an inlet air cooling scheme at a gas process plant. Various gas turbine (GT) inlet air cooling schemes were reviewed. The inlet fogging scheme was selected for detailed studies due to its low installation capital costs. The results indicate a potential of 10% enhancement in power output on a warm, dry day, a 5% enhancement in a typical summer day, but only a 1% enhancement in a hot humid day. It is shown that the relative humidity is the most important factor that affects the impact of inlet fogging. Therefore, the inlet fogging can enhance GT power output not only in the hot summer, but also in other dry days during the year. An annual analysis was also conducted based on New Orleans's annual weather conditions. The results indicate a potential of increased power of 2.34% with inlet fogging to saturated state and additional 5% increased power with 0.5%(wt.) overspray. The total potential power increase for the gas turbine fleet is 7.39% at $265/HP. Since the gas turbine fleet consists of small units, the installation cost is much higher than a typical cost of $34~60/HP for installing an inlet fogging system on a gas turbine larger than 300MW. However, this installation capital cost is 57% cheaper than buying a new gas turbine, which will cost about $608/HP.

Wang, T.; Braquet, L.

2008-01-01T23:59:59.000Z

319

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

320

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

Note: This page contains sample records for the topic "gas turbine power" from the National Library of EnergyBeta (NLEBeta).
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321

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

322

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

323

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

324

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

325

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

326

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

327

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

328

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

329

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

330

Role of gas and steam turbines to reduce industrial plant energy costs  

SciTech Connect

Data are given to help industry select the economic fuel and economic mix of steam and gas turbines for energy-conservation measures and costs. Utilities and industrials can no longer rely on a firm supply of natural gas to fuel their boilers and turbines. The effect various liquid fuels have on gas turbine maintenance and availability is summarized. Process heat requirements per unit of power, process steam pressure, and the type of fuel will be factors in evaluating the proper mix of steam and gas turbines. The plant requirements for heat, and the availability of a reliable source of electric power will influence the amount of power (hp and kW) that can be economically generated by the industrial. (auth)

Wilson, W.B.; Hefner, W.J.

1973-11-01T23:59:59.000Z

331

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

332

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

333

Advanced Gas Turbine Guidelines: Performance Retention for GE 7FA Unit in Baseload Operation: Durability Surveillance at Florida Pow er & Lights Company's Martin Station  

Science Conference Proceedings (OSTI)

Worldwide pressures for reducing power generation costs have encouraged domestic and foreign manufacturers to build high-efficiency gas turbines implementing the latest technological advances. This report discusses performance monitoring and analysis in a multiyear project, launched in 1991, to assure the staying power of industrial gas turbines produced by major turbine manufacturers.

1999-04-02T23:59:59.000Z

334

*Revisions to POS List, i.e. updates, additions and/or deletions NILAND GAS TURBINE PLANT, DOCKET NO.O6-SPPE-1  

E-Print Network (OSTI)

*Revisions to POS List, i.e. updates, additions and/or deletions NILAND GAS TURBINE PLANT, DOCKET OF CALIFORNIA SMALL POWER PLANT EXEMPTION FOR THE NILAND GAS TURBINE PLANT DOCKET NO. 06-SPPE-1 (Imperial_hahn@urscorp.com #12;*Revisions to POS List, i.e. updates, additions and/or deletions NILAND GAS TURBINE PLANT, DOCKET

335

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

336

Power Production from Geothermal Brine with the Rotary Separator Turbine  

SciTech Connect

The rotary separator turbine is a new turbine device that operates with gas-liquid mixtures. This device achieves complete gas-liquid separation, generates power from the liquid and repressurizes the liquid. The use of the rotary separator turbine for geothermal power generation was investigated on this program. A pilot scale unit was designed and tested. Tests were conducted with a clean water/steam mixture and with geothermal brine/steam flows at East Mesa, California; Raft River, Idaho; and Roosevelt Hot Springs, Utah. The test results were used to calculate the performance advantage of a rotary separator turbine power system compared to a flash steam power system and a binary power system. The calculated performance advantages were then used to estimate market potential for wellhead and central station Biphase units. The measured performance in the laboratory and in the field agreed to within {+-} 10% of the predicted values. The design goal of 20 kWe was generated both in the laboratory and from brine. Separated steam quality was measured to be greater than 99.96% at all three geothermal resources and in the laboratory. Brine pressure leaving the test unit was greater than reinjection pressure requirements. Maximum brine outlet pressure of 90 psig was demonstrated. The measured performance values would result in a 34% increase in electric power production above a single stage flash steam system. Increasing the size from the pilot size unit (20kWe) to a wellhead unit (2000 kWe) gave a calculated performance advantage of 40%. Based on these favorable results, design, construction and testing of a full-size well-head unit was initiated.

Cerini, Donald J.; Hays, Lance G.

1980-12-01T23:59:59.000Z

337

Willamina Project Report : Indirect-Fired, Biomass-Fueled, Combined-Cycle, Gas Turbine Power Plant Using a Ceramic Heat Exchanger. Volume 1. Conceptual Plant Design and Analysis. Final report. [Contains Glossary  

SciTech Connect

A new technology for a wood-fueled electrical generation plant was evaluated. The proposed plant utilizes an indirectly fired gas turbine (IFGT) using a ceramic heat exchanger for high efficiency, due to its high temperature capability. The proposed plant utilizes a wood-fueled furnace with a ceramic heat exchanger to heat compressed air for a gas turbine. The configuration proposed is a combined cycle power plant that can produce 6 to 12 MW, depending upon the amount of wood used to supplementally fire a heat recovery steam generator (HRSG), which in turn powers a steam turbine. Drawings, specifications, and cost estimates based on a combined cycle analysis and wood-fired HRSG were developed. The total plant capital cost was estimated to be $13.1 million ($1640/kW). The heat rate for a 8-MW plant was calculated to be 10,965 Btu/kW when using wood residues with a 42% moisture content. Levelized electric energy costs were estimated to be 6.9 cents/kWh.

F.W. Braun Engineers.

1984-05-01T23:59:59.000Z

338

Automotive turbine engine  

SciTech Connect

Gas flow through a turbine is divided, with part of the flow directed to the compressor for the combusion chamber and part directed to the primary power turbine. Division of the gas flow is accomplished by a mixing wheel of novel design. Before passing to the primary power turbine the gas flow passes through a secondary power turbine that drives the compressor for the combustion chamber. Both the secondary power turbine and the compressor rotate independently of the main turbine rotor shaft. The power input to the secondary power turbine is varied in accordance with the pressure differential between the gas pressure at the outlet of the compressor for the combustion chamber and the outlet from the mixing wheel. If the speed of the main turbine shaft slows down more power is put into the secondary power turbine and the combustion chamber compressor is speeded up so as to produce a higher gas pressure than would otherwise be the case.

Wirth, R.E.; Wirth, M.N.

1978-12-26T23:59:59.000Z

339

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

340

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

Note: This page contains sample records for the topic "gas turbine power" 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.


341

Gas Turbine/Solar Parabolic Trough Hybrid Designs: Preprint  

DOE Green Energy (OSTI)

A strength of parabolic trough concentrating solar power (CSP) plants is the ability to provide reliable power by incorporating either thermal energy storage or backup heat from fossil fuels. Yet these benefits have not been fully realized because thermal energy storage remains expensive at trough operating temperatures and gas usage in CSP plants is less efficient than in dedicated combined cycle plants. For example, while a modern combined cycle plant can achieve an overall efficiency in excess of 55%; auxiliary heaters in a parabolic trough plant convert gas to electricity at below 40%. Thus, one can argue the more effective use of natural gas is in a combined cycle plant, not as backup to a CSP plant. Integrated solar combined cycle (ISCC) systems avoid this pitfall by injecting solar steam into the fossil power cycle; however, these designs are limited to about 10% total solar enhancement. Without reliable, cost-effective energy storage or backup power, renewable sources will struggle to achieve a high penetration in the electric grid. This paper describes a novel gas turbine / parabolic trough hybrid design that combines solar contribution of 57% and higher with gas heat rates that rival that for combined cycle natural gas plants. The design integrates proven solar and fossil technologies, thereby offering high reliability and low financial risk while promoting deployment of solar thermal power.

Turchi, C. S.; Ma, Z.; Erbes, M.

2011-03-01T23:59:59.000Z

342

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

343

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

344

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

345

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 ...

346

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

347

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

348

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

349

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 ...

350

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

351

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  ...

352

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,.

353

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 ...

354

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.

355

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 ...

356

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 ...

357

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.

358

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.

359

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...

360

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 ...

Note: This page contains sample records for the topic "gas turbine power" 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

Fast Verification of Wind Turbine Power Summary of Project Results  

E-Print Network (OSTI)

a wind turbine's design phase, the power curve can be predicted using analytical techniques such as Blade using a single cup anemometer at the wind turbine's hub height and it is assumed that this measurementFast Verification of Wind Turbine Power Curves: Summary of Project Results by: Cameron Brown ­ s

362

Stochastic Analysis of Wind Turbine Power Curves Edgar Anahua  

E-Print Network (OSTI)

procedure (IEC 61400-12) for power performance charac- terization of a single wind turbines is shown by the standard IEC 61400-12 3 [12]. In this standard procedure the power curve of a single wind turbine of the blade pitch angle system of a wind turbine [9]. The phase averaged P(t,t ) function depends on the time

Peinke, Joachim

363

Generation Maintenance Application Center: Fuel Gas System for Combustion Turbine Combined Cycle Plant Maintenance Guide  

Science Conference Proceedings (OSTI)

This guide provides information to assist personnel involved with the maintenance of the fuel gas system at a gas turbine combined cycle facility, including good maintenance practices, preventive maintenance techniques and troubleshooting guidance. BackgroundCombustion turbine combined cycle (CTCC) facilities utilize various components that can be unique to this particular type of power plant. As such, owners and operators of CTCC facilities may find ...

2013-05-15T23:59:59.000Z

364

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

365

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

366

The Future of Combustion Turbine Technology for Industrial and Utility Power Generation  

E-Print Network (OSTI)

Low capital cost and ample low-cost natural gas supplies will make natural gas-fired combustion turbine systems the power generation technology of choice over the next decade. Against the background of earlier use by electric utilities, this paper examines the status, economic outlook, and future directions of combustion turbine technology for industrial and utility power generation. The discussion takes into account the ongoing deregulation and increasing competition that are shaping the electric power generation business. Included is a comparison between heavy-duty industrial combustion turbines and their rapidly evolving competition, aeroderivative machines, with emphasis on the appropriate application of each. The prospects for future improvements in the cost and performance of combustion turbines are reviewed, and the likely impact of advanced combustion turbine power generation concepts is considered. Also summarized is the outlook for power generation fuels, including the longer term reemergence of coal and the potential for widespread use of coal gasification-based combustion turbine systems. The paper draws heavily from a technical, economic, and business analysis, Combustion Turbine Power Systems, recently completed by SFA Pacific. The analysis was sponsored by an international group of energy companies that includes utilities, independent power producers (IPPs), and power industry equipment vendors.

Karp, A. D.; Simbeck, D. R.

1994-04-01T23:59:59.000Z

367

Preliminary Estimates of Combined Heat and Power Greenhouse Gas Abatement Potential for California in 2020  

E-Print Network (OSTI)

MW Reciprocating Engine 3 MW Gas Turbine 1 MW ReciprocatingEngine 5 MW Gas Turbine 3MW Gas Turbine 40 MW Gas Turbine 1 MW Reciprocating Engine

Firestone, Ryan; Ling, Frank; Marnay, Chris; Hamachi LaCommare, Kristina

2007-01-01T23:59:59.000Z

368

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

369

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

370

DEVELOPMENT OF A NEW HIGH TEMPERATURE GAS RECEIVER UTILIZING SMALL PARTICLES  

E-Print Network (OSTI)

for powering a gas turbine or to supply industrial processin conjunetion with a gas turbine system providing severalincluding heating a gas to operate a turbine (4), providing

Hunt, Arlon J.

2012-01-01T23:59:59.000Z

371

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

372

NREL: Wind Research - Mariah Power's Windspire Wind Turbine Testing and  

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

Mariah Power's Windspire Wind Turbine Testing and Results Mariah Power's Windspire Wind Turbine Testing and Results A video of Mariah Power's Windspire wind turbine. Text Version As part of the National Renewable Energy Laboratory and U.S. Department of Energy (NREL/DOE) Independent Testing project, NREL tested Mariah Power's Windspire Giromill small wind turbine at the National Wind Technology Center (NWTC) through January 14, 2009 when NREL terminated its testing. Read a chronology of events and letter from Mariah Power to NREL. The Windspire is a 1.2-kilowatt (kW) vertical-axis small wind turbine. The turbine tower is 9.1 meters tall, and its rotor area is 1.2 by 6.1 meters. The turbine has a permanent-magnet generator with a single-phase output at 120 volts AC. Testing Summary Testing was terminated January 14, 2009. Published test reports include

373

Impact of Advanced Turbine Systems on coal-based power plants  

DOE Green Energy (OSTI)

The advanced power-generation products currently under development in our program show great promise for ultimate commercial use. Four of these products are referred to in this paper: Integrated Gasification Combined Cycle (IGCC), Pressurized Fluidized Bed Combustion (PFBC), Externally Fired Combined Cycle (EFCC), and Integrated Gasification Fuel Cell (IGFC). Three of these products, IGCC, PFBC, and EFCC, rely on advanced gas turbines as a key enabling technology and the foundation for efficiencies in the range of 52 to 55 percent. DOE is funding the development of advanced gas turbines in the newly instituted Advanced Turbine Systems (ATS) Program, one of DOE`s highest priority natural gas initiatives. The turbines, which will have natural gas efficiencies of 60 percent, are being evaluated for coal gas compatibility as part of that program.

Bechtel, T.F.

1993-12-31T23:59:59.000Z

374

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

375

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

376

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

377

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

378

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).

379

Wind Turbine Generator System Power Performance Test Report for the ARE442 Wind Turbine  

DOE Green Energy (OSTI)

This report summarizes the results of a power performance test that NREL conducted on the ARE 442 wind turbine. This test was conducted in accordance with the International Electrotechnical Commission's (IEC) standard, Wind Turbine Generator Systems Part 12: Power Performance Measurements of Electricity Producing Wind Turbines, IEC 61400-12-1 Ed.1.0, 2005-12. However, because the ARE 442 is a small turbine as defined by IEC, NREL also followed Annex H that applies to small wind turbines. In these summary results, wind speed is normalized to sea-level air density.

van Dam, J.; Jager, D.

2010-02-01T23:59:59.000Z

380

Gas turbine bottoming cycles: Triple-pressure steam versus Kalina  

SciTech Connect

The performance of a triple-pressure steam cycle has been compared with a single-stage Kalina cycle and an optimized three-stage Kalina cycle as the bottoming sections of a gas turbine combined cycle power plant. A Monte Carlo direct search was used to find the optimum separator temperature and ammonia mass fraction for the three-stage Kalina cycle for a specific plant configuration. Both Kalina cycles were more efficient than the triple pressure steam cycle. Optimization of the three-stage Kalina cycle resulted in almost a two percentage point improvement.

Marston, C.H. [Villanova Univ., PA (United States); Hyre, M. [Massachusetts Inst. of Technology, Cambridge, MA (United States)

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas turbine power" 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

NETL: Turbines  

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

Turbines Coal and Power Systems Turbines Turbine Animation Turbines have been the world's energy workhorses for generations... - Read More The NETL Turbine Program manages a...

382

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

383

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

384

Environmental, Health and Safety Assessment: ATS 7H Program (Phase 3R) Test Activities at the GE Power Systems Gas Turbine Manufacturing Facility, Greenville, SC  

Science Conference Proceedings (OSTI)

International Technology Corporation (IT) was contracted by General Electric Company (GE) to assist in the preparation of an Environmental, Health and Safety (HI&3) assessment of the implementation of Phase 3R of the Advanced Turbine System (ATS) 7H program at the GE Gas Turbines facility located in Greenville, South Carolina. The assessment was prepared in accordance with GE's contractual agreement with the U.S. Department of Energy (GE/DOE Cooperative Agreement DE-FC21-95MC3 1176) and supports compliance with the requirements of the National Environmental Policy Act of 1970. This report provides a summary of the EH&S review and includes the following: General description of current site operations and EH&S status, Description of proposed ATS 7H-related activities and discussion of the resulting environmental, health, safety and other impacts to the site and surrounding area. Listing of permits and/or licenses required to comply with federal, state and local regulations for proposed 7H-related activities. Assessment of adequacy of current and required permits, licenses, programs and/or plans.

None

1998-11-17T23:59:59.000Z

385

Effects of external boost compression on gas turbine performance in an advanced CPFBC application  

SciTech Connect

When a commercial gas turbine, designed and optimized for natural gas fuel, is used in an Advanced Circulating Pressurized Fluid Bed Combustor (CPFBC) application, changes occur that affect both the thermodynamic cycle and the performance of the individual components. These come principally from the increased pressure drop encountered between the compressor discharge and expander inlet, with changes in gas properties and flow rates for the hot combustion products having secondary effects. Net effect is that power output can be reduced and significant design and/or operational compromises may be required for the gas turbine. Application of an external boost compressor can mitigate these effects.

Freier, M.D. [USDOE Morgantown Energy Technology Center, WV (United States); Goldstein, H.N.; White, J.S. [Parsons Power Group, Inc., Reading, PA (United States)

1996-12-31T23:59:59.000Z

386

Power Performance Test Report for the SWIFT Wind Turbine  

DOE Green Energy (OSTI)

This report summarizes the results of a power performance test that NREL conducted on the SWIFT wind turbine. This test was conducted in accordance with the International Electrotechnical Commission's (IEC) standard, Wind Turbine Generator Systems Part 12: Power Performance Measurements of Electricity Producing Wind Turbines, IEC 61400-12-1 Ed.1.0, 2005-12. However, because the SWIFT is a small turbine as defined by IEC, NREL also followed Annex H that applies to small wind turbines. In these summary results, wind speed is normalized to sea-level air density.

Mendoza, I.; Hur, J.

2012-12-01T23:59:59.000Z

387

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

388

High-pressure ceramic air heater for indirectly fired gas turbine applications  

SciTech Connect

The Externally-Fired Combined Cycle (EFCC) offers a method for operating high-efficiency gas and steam turbine combined cycles on coal. In the EFCC, an air heater replaces the gas turbine combustor so that the turbine can be indirectly fired. Ceramic materials are required for the heat exchange surfaces to accommodate the operating temperatures of modern gas turbines. The ceramic air heater or heat exchanger is the focus of this program, and the two primary objectives are (1) to demonstrate that a ceramic air heater can be reliably pressurized to a level of 225 psia (1.5 MPa); and (2) to show that the air heater can withstand exposure to the products of coal combustion at elevated temperatures. By replacing the gas turbine combustor with a ceramic air heater, the cycle can use coal or other ash-bearing fuels. Numerous programs have attempted to fuel high efficiency gas turbines directly with coal, often resulting in significant ash deposition upon turbine components and corrosion or erosion of turbine blades. This report will show that a ceramic air heater is significantly less susceptible to ash deposition or corrosion than a gas turbine when protected by rudimentary methods of gas-stream clean-up. A 25 [times] 10[sup 6] Btu/hr (7 MW) test facility is under construction in Kennebunk, Maine. It is anticipated that this proof of concept program will lead to commercialization of the EFCC by electric utility and industrial organizations. Applications are being pursued for power plants ranging from 10 to 100 megawatts.

LaHaye, P.G.; Briggs, G.F.; Vandervort, C.L.; Seger, J.L.

1992-01-01T23:59:59.000Z

389

High-pressure ceramic air heater for indirectly fired gas turbine applications  

SciTech Connect

The Externally-Fired Combined Cycle (EFCC) offers a method for operating high-efficiency gas and steam turbine combined cycles on coal. In the EFCC, an air heater replaces the gas turbine combustor so that the turbine can be indirectly fired. Ceramic materials are required for the heat exchange surfaces to accommodate the operating temperatures of modern gas turbines. The ceramic air heater or heat exchanger is the focus of this program, and the two primary objectives are (1) to demonstrate that a ceramic air heater can be reliably pressurized to a level of 225 psia (1.5 MPa); and (2) to show that the air heater can withstand exposure to the products of coal combustion at elevated temperatures. By replacing the gas turbine combustor with a ceramic air heater, the cycle can use coal or other ash-bearing fuels. Numerous programs have attempted to fuel high efficiency gas turbines directly with coal, often resulting in significant ash deposition upon turbine components and corrosion or erosion of turbine blades. This report will show that a ceramic air heater is significantly less susceptible to ash deposition or corrosion than a gas turbine when protected by rudimentary methods of gas-stream clean-up. A 25 {times} 10{sup 6} Btu/hr (7 MW) test facility is under construction in Kennebunk, Maine. It is anticipated that this proof of concept program will lead to commercialization of the EFCC by electric utility and industrial organizations. Applications are being pursued for power plants ranging from 10 to 100 megawatts.

LaHaye, P.G.; Briggs, G.F.; Vandervort, C.L.; Seger, J.L.

1992-12-01T23:59:59.000Z

390

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

391

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

392

Fuel Cell/Turbine Ultra High Efficiency Power System  

DOE Green Energy (OSTI)

FuelCell Energy, INC. (FCE) is currently involved in the design of ultra high efficiency power plants under a cooperative agreement (DE-FC26-00NT40) managed by the National Energy Technology Laboratory (NETL) as part of the DOE's Vision 21 program. Under this project, FCE is developing a fuel cell/turbine hybrid system that integrates the atmospheric pressure Direct FuelCell{reg_sign} (DFC{reg_sign}) with an unfired Brayton cycle utilizing indirect heat recovery from the power plant. Features of the DFC/T{trademark} system include: high efficiency, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, no pressurization of the fuel cell, independent operating pressure of the fuel cell and turbine, and potential cost competitiveness with existing combined cycle power plants at much smaller sizes. Objectives of the Vision 21 Program include developing power plants that will generate electricity with net efficiencies approaching 75 percent (with natural gas), while producing sulfur and nitrogen oxide emissions of less than 0.01 lb/million BTU. These goals are significant improvements over conventional power plants, which are 35-60 percent efficient and produce emissions of 0.07 to 0.3 lb/million BTU of sulfur and nitrogen oxides. The nitrogen oxide and sulfur emissions from the DFC/T system are anticipated to be better than the Vision 21 goals due to the non-combustion features of the DFC/T power plant. The expected high efficiency of the DFC/T will also result in a 40-50 percent reduction in carbon dioxide emissions compared to conventional power plants. To date, the R&D efforts have resulted in significant progress including proof-of-concept tests of a sub-scale power plant built around a state-of-the-art DFC stack integrated with a modified Capstone Model 330 Microturbine. The objectives of this effort are to investigate the integration aspects of the fuel cell and turbine and to obtain design information and operational data that will be utilized in the design of a 40-MW high efficiency Vision 21 power plant. Additionally, these tests are providing the valuable insight for DFC/Turbine power plant potential for load following, increased reliability, and enhanced operability.

Hossein, Ghezel-Ayagh

2001-11-06T23:59:59.000Z

393

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

394

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

395

DIRECT FUEL CELL/TURBINE POWER PLANT  

DOE Green Energy (OSTI)

Project activities were focused on the design and construction the sub-scale hybrid Direct Fuel Cell/turbine (DFC/T{reg_sign}) power plant and modification of a Capstone Simple Cycle Model 330 microturbine. The power plant design work included preparation of system flow sheet and performing computer simulations based on conservation of mass and energy. The results of the simulation analyses were utilized to prepare data sheets and specifications for balance-of-plant equipment. Process flow diagram (PFD) and piping and instrumentation diagrams (P&ID) were also completed. The steady state simulation results were used to develop design information for modifying the control functions, and for sizing the heat exchangers required for recuperating the waste heat from the power plant. Line and valve sizes for the interconnecting pipes between the microturbine and the heat recuperators were also identified.

Hossein Ghezel-Ayagh

2003-05-22T23:59:59.000Z

396

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

397

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

398

Parametric performance analysis of steam-injected gas turbine with a thermionic-energy-converter-lined combustor  

SciTech Connect

The performance of steam-injected gas turbines having combustors lined with thermionic energy converters (STIG/TEC systems) was analyzed and compared with that of two baseline systems a steam-injected gas turbine (without a TEC-lined combustor) and a conventional combined gas turbine/steam turbine cycle. Common gas turbine parameters were assumed for all of the systems. Two configurations of the STIG/TEC system were investigated. In both cases, steam produced in an exhaust-heat-recovery boiler cools the TEC collectors. It is then injected into the gas combustion stream and expanded through the gas turbine. The STIG/TEC system combines the advantage of gas turbine steam injection with the conversion of high-temperature combustion heat by TEC's. The addition of TEC's to the baseline steam-injected gas turbine improves both its efficiency and specific power. Depending on system configuration and design parameters, the STIG/TEC system can also achieve higher efficiency and specific power than the baseline combined cycle.

Choo, Y.K.; Burns, R.K.

1982-02-01T23:59:59.000Z

399

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

400

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

Note: This page contains sample records for the topic "gas turbine power" 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

NREL Small Wind Turbine Test Project: Mariah Power's Windspire Wind Turbine Test Chronology  

SciTech Connect

This report presents a chronology of tests conducted at NREL's National Wind Technology Center on Mariah Power's Windspire 1.2-kW wind turbine and a letter of response from Mariah Power.

Huskey, A.; Forsyth, T.

2009-06-01T23:59:59.000Z

402

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

403

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

404

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

405

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

406

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

407

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

408

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

409

Power Electronics and Controls for Wind Turbine F. Blaabjerg, F. Iov, Z. Chen, K. Ma  

E-Print Network (OSTI)

, distribution and use of electrical energy are done as efficiently as possible. Further, emerging climate is to use power electronics to achieve high efficiency in power generation, transmission/distribution such as wind turbines, wave generators, photovoltaic (PV) generators, small hydro, fuel cells and gas/steam

Chen, Zhe

410

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

411

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

412

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...

413

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....

414

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....

415

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

416

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

417

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

418

Field testing the Raman gas composition sensor for gas turbine operation  

Science Conference Proceedings (OSTI)

A gas composition sensor based on Raman spectroscopy using reflective metal lined capillary waveguides is tested under field conditions for feed-forward applications in gas turbine control. The capillary waveguide enables effective use of low powered lasers and rapid composition determination, for computation of required parameters to pre-adjust burner control based on incoming fuel. Tests on high pressure fuel streams show sub-second time response and better than one percent accuracy on natural gas fuel mixtures. Fuel composition and Wobbe constant values are provided at one second intervals or faster. The sensor, designed and constructed at NETL, is packaged for Class I Division 2 operations typical of gas turbine environments, and samples gas at up to 800 psig. Simultaneous determination of the hydrocarbons methane, ethane, and propane plus CO, CO2, H2O, H2, N2, and O2 are realized. The capillary waveguide permits use of miniature spectrometers and laser power of less than 100 mW. The capillary dimensions of 1 m length and 300 ?m ID also enable a full sample exchange in 0.4 s or less at 5 psig pressure differential, which allows a fast response to changes in sample composition. Sensor operation under field operation conditions will be reported.

Buric, M.; Chorpening, B.; Mullem, J.; Ranalli, J.; Woodruff, S.

2012-01-01T23:59:59.000Z

419

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

420

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 power" 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

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

422

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

423

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

424

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

425

Repowering oil-fired boilers with combustion turbines fired with gas from coal. Final report  

Science Conference Proceedings (OSTI)

The results of a study on repowering of oil fired reheat steam plants using combustion turbines and coal gas from the Texaco oxygen blown gasifier are presented. The steam plant utilizes combustion turbine exhaust gas as its combustion air supply. In some examples coal gas is fired in both the combustion turbines and the main boiler, while, in other cases, oil firing is retained in the boiler. Plant configurations, equipment changes, and performance are determined for three basic forms: (1) repowering based on coal gas supplied by pipeline (remote source); (2) repowering based on complete integration of the gasification system with the power plant; and (3) repowering based on partial integration of the gasification system wherein the boiler retains oil firing.

Garland, R.V.

1981-07-01T23:59:59.000Z

426

Wind Turbine Generator System Duration Test Report for the Mariah Power Windspire Wind Turbine  

Science Conference Proceedings (OSTI)

This test was conducted as part of the U.S. Department of Energy's (DOE) Independent Testing project to help reduce the barriers of wind energy expansion by providing independent testing results for small turbines. In total, five turbines are being tested at the National Wind Technology Center (NWTC) as a part of the first round of this project. Duration testing is one of up to five tests that may be performed on the turbines. Other tests include power performance, safety and function, noise, and power quality tests. NWTC testing results provide manufacturers with reports that may be used to meet part of small wind turbine certification requirements. This duration test report focuses on the Mariah Power Windspire wind turbine.

Huskey, A.; Bowen, A.; Jager, D.

2010-05-01T23:59:59.000Z

427

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

428

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

429

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

430

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

431

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

432

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

433

Advanced gas turbine systems research. Technical quarterly progress report, July 1--September 30, 1997  

DOE Green Energy (OSTI)

Major accomplishments by AGTSR during this reporting period are highlighted and then amplified in later sections of this report. Main areas of research are combustion, heat transfer, and materials. Gas turbines are used for power generation by utilities and industry and for propulsion.

NONE

1997-12-31T23:59:59.000Z

434

Advanced gas turbine systems research. Technical quarterly progress report, April 1--June 30, 1998  

DOE Green Energy (OSTI)

Major accomplishments by AGTSR during this reporting period are highlighted and then amplified in later sections of this report. Main areas of research are combustion, heat transfer, and materials. Gas turbines are used for power generation by utilities and industry and for propulsion.

NONE

1998-09-01T23:59:59.000Z

435

Advanced gas turbine systems research. Technical quarterly progress report, October 1--December 31, 1997  

DOE Green Energy (OSTI)

Major accomplishments by AGTSR during this reporting period are highlighted and then amplified in later sections of this report. Main areas of research are combustion, heat transfer, and materials. Gas turbines are used for power generation by utilities and industry and for propulsion.

NONE

1997-12-31T23:59:59.000Z

436

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

437

DADICC: Intelligent system for anomaly detection in a combined cycle gas turbine plant  

Science Conference Proceedings (OSTI)

DADICC is the abbreviated name for an intelligent system able to detect on-line and diagnose anomalies as soon as possible in the dynamic evolution of the behaviour of a power plant based on a combined cycle gas turbine. In order to reach this objective, ... Keywords: Anomaly detection, Diagnosis, Expert system, Multi-agent system, Neural network, Normal behaviour

Antonio Arranz; Alberto Cruz; Miguel A. Sanz-Bobi; Pablo Ruíz; Josué Coutiño

2008-05-01T23:59:59.000Z

438

Advanced gas turbine systems research. Technical quarterly progress report, January 1--March 31, 1998  

DOE Green Energy (OSTI)

Major accomplishments by AGTSR during this reporting period are highlighted and then amplified in later sections of this report. Main areas of research are combustion, heat transfer, and materials. Gas turbines are used for power generation by utilities and industry and for propulsion.

NONE

1998-08-01T23:59:59.000Z

439

Wind Turbine Generator System Power Performance Test Report for the Entegrity EW50 Wind Turbine  

DOE Green Energy (OSTI)

Report on the results of the power performance test that the National Renewable Energy Laboratory (NREL) conducted on Entegrity Wind System Inc.'s EW50 small wind turbine.

Smith, J.; Huskey, A.; Jager, D.; Hur, J.

2011-05-01T23:59:59.000Z

440

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

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441

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