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Note: This page contains sample records for the topic "reciprocating turbine engine" 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
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1

Emissions data for stationary reciprocating engines and gas turbines in use by the gas pipeline transmission industry  

SciTech Connect

A.G.A. Project PR-15-613, conducted under the sponsorship of the Pipeline Committee (PRC), involved two phases. This final report for the overall project combines both of the separate phase reports into a single document. The project was entitled ''Compilation of Emissions Data for Stationary Reciprocating Engines and Gas Turbines in Use by the Gas Pipeline Transmission Industry (Update).'' The purpose of this project was to update the 1980 edition of the Compilation of Emissions Data. Phase I involved collection of emissions data from companies in the natural gas industry and from gas engine manufacturers and recommending engine and gas turbine models for testing under Phase II. Phase I was completed in March 1987 and the findings and recommendations were included in an interim report. Phase II involved emissions testing of a number of reciprocating engines and gas turbines. Phase II was completed in April 1988 and the findings are included in this project final report. 9 refs., 5 tabs.

Fanick, E.R.; Dietzmann, H.E.; Urban, C.M.

1988-04-01T23:59:59.000Z

2

Compilation of emissions data for stationary reciprocating gas engines and gas turbines in use by the natural gas pipeline transmission industry  

SciTech Connect

This publication compiles the available exhaust emission data for stationary reciprocating engines and gas turbines used by the natural gas pipeline transmission industry into a single, easy-to-use source. Data in the original issue and the revisions were obtained from projects sponsored by the A.G.A. PRC and from inhouse projects within a number of the A.G.A. member companies. Additional data included in this reissue were obtained from additional emissions measurement projects sponsored by the A.G.A. PRC, and from A.G.A. member companies and natural gas engine manufacturers.

Urban, C.M.

1988-05-01T23:59:59.000Z

3

University Reciprocating Engine Program Review  

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

University Reciprocating Engine Program Review University Reciprocating Engine Program Review April 9-10, 2003 Table of Contents Disclaimer Papers and Presentations Meeting Overview & Outcomes [PDF-192KB] Agenda [PDF-143KB] DOE/EERE/DER Natural Gas Reciprocating Engines Program The Advanced University Reciprocating Engine Research Program (AUREP) is a Distributed Energy Resources (DER) Program managed within DOE's Office of Energy Efficiency and Renewable Energy (EERE). Click on the link above to find abundant information on the natural gas reciprocating engine program (Technology Primer, Related Programs, Documents & Resources, News & Events, Solicitations and the DER Site Map). Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government or any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

4

AMO Industrial Distributed Energy: Advanced Reciprocating Engine...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

gas fueled engines for power generation that combine high efficiency, low emissions, fuel flexibility, and reduced cost of ownership. Phase I of the Cummins reciprocating engine...

5

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

6

Single rotor turbine engine  

SciTech Connect

There has been invented a turbine engine with a single rotor which cools the engine, functions as a radial compressor, pushes air through the engine to the ignition point, and acts as an axial turbine for powering the compressor. The invention engine is designed to use a simple scheme of conventional passage shapes to provide both a radial and axial flow pattern through the single rotor, thereby allowing the radial intake air flow to cool the turbine blades and turbine exhaust gases in an axial flow to be used for energy transfer. In an alternative embodiment, an electric generator is incorporated in the engine to specifically adapt the invention for power generation. Magnets are embedded in the exhaust face of the single rotor proximate to a ring of stationary magnetic cores with windings to provide for the generation of electricity. In this alternative embodiment, the turbine is a radial inflow turbine rather than an axial turbine as used in the first embodiment. Radial inflow passages of conventional design are interleaved with radial compressor passages to allow the intake air to cool the turbine blades.

Platts, David A. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

7

Engines, turbines and compressors directory  

SciTech Connect

This book is a directory of engines, turbines and compressors. It adds and deletes compressor engines in use by the gas industry.

1989-01-01T23:59:59.000Z

8

Steam Turbine Performance Engineer's Guide  

Science Conference Proceedings (OSTI)

The Steam Turbine Performance Engineer's Guide is meant to present the steam turbine performance engineer with the expected and important functions and responsibilities necessary to succeed in this position that are not necessarily taught in college. The instructions and recommendations in this guide, when properly executed, will improve the effectiveness of steam turbine performance engineers, positively affecting both the performance and reliability of the steam turbines under their care.

2010-12-23T23:59:59.000Z

9

Assessment of Small Reciprocating Engine Manufacturers and Generator Set Packagers  

Science Conference Proceedings (OSTI)

This report presents an overview of reciprocating engine manufacturers and packagers of generators less that 300 kW in North America, Western Europe and Japan. This includes diesel (or compression ignition) engines as well as spark ignited engines fueled by gasoline, natural gas, liquid petroleum gas, and other similar fuels. Chapter 1 provides an overview of the market for smaller reciprocating engines, including a discussion of market channels and production levels. Chapter 2 primarily lists reciprocat...

2000-12-08T23:59:59.000Z

10

E-Alerts: Combustion, engines, and propellants (reciprocation and rotating combustion engines). E-mail newsletter  

Science Conference Proceedings (OSTI)

Design, performance, and testing of reciprocating and rotating engines of various configurations for all types of propulsion. Includes internal and external combustion engines; engine exhaust systems; engine air systems components; engine structures; stirling and diesel engines.

NONE

1999-04-01T23:59:59.000Z

11

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

12

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1992-01-01T23:59:59.000Z

13

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1993-01-01T23:59:59.000Z

14

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature ceramic/metallic turbine engine includes a metallic housing which journals a rotor member of the turbine engine. A ceramic disk-like shroud portion of the engine is supported on the metallic housing portion and maintains a close running clearance with the rotor member. A ceramic spacer assembly maintains the close running clearance of the shroud portion and rotor member despite differential thermal movements between the shroud portion and metallic housing portion.

Carruthers, William D. (Mesa, AZ); Boyd, Gary L. (Tempe, AZ)

1994-01-01T23:59:59.000Z

15

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

16

Gas Turbine Engines  

Science Conference Proceedings (OSTI)

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

17

Toward Integrated Life-limit Materials Engineering of Turbine Engine ...  

Science Conference Proceedings (OSTI)

... the design and life management of future turbine engine rotor alloys and components. ... loading variables found in the operation of advanced turbine engines.

18

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

19

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.

20

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature turbine engine includes a rotor portion having axially stacked adjacent ceramic rotor parts. A ceramic/ceramic joint structure transmits torque between the rotor parts while maintaining coaxial alignment and axially spaced mutually parallel relation thereof despite thermal and centrifugal cycling.

Boyd, Gary L. (Tempe, AZ)

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

High temperature turbine engine structure  

DOE Patents (OSTI)

A high temperature turbine engine includes a hybrid ceramic/metallic rotor member having ceramic/metal joint structure. The disclosed joint is able to endure higher temperatures than previously possible, and aids in controlling heat transfer in the rotor member.

Boyd, Gary L. (Tempe, AZ)

1990-01-01T23:59:59.000Z

22

Wind Turbines Electrical and Mechanical Engineering  

E-Print Network (OSTI)

Wind Turbines Electrical and Mechanical Engineering Objective · Introduce students to the concept of alternative energy. · Explain the math and scientific principles behind engineering wind turbines. Standards and how it applies to wind energy · About how surface area and shape effects wind turbine efficiency

Provancher, William

23

Combustion characterization of methylal in reciprocating engines  

DOE Green Energy (OSTI)

Methylal, CH{sub 3}OCH{sub 2}OCH{sub 3}, also known as dimethoxy-methane, is unique among oxygenates in that it has a low autoignition temperature, no carbon-carbon bonds, and is soluble in middle distillate fuels. Because of these properties, methylal has been shown to be a favorable fuel additive for reducing smoke in diesel engines. Recent measurements of ignition delay times indicate that methylal has a cetane number in the range of 45-50, which is compatible with diesel fuels. Engine tests have shown that adding methylal to diesel fuel significantly reduces smoke emissions. Gaseous emissions and combustion efficiencies obtained with methylal/diesel fuel blends remain essentially the same as those measured using neat diesel fuel. Lubricity measurements of methylal/diesel fuel blends with a ball on cylinder lubrication evaluator (BOCLE) show that methylal improves the lubricity of diesel fuel. Even though additions of methylal lower the fuel viscosity, the results of the BOCLE tests indicate that the methylal/diesel fuel blends cause less pump wear than neat diesel fuel. The one drawback is that methylal has a low boiling point (42{degrees}C) and a relatively high vapor pressure. As a result, it lowers the flash point of diesel fuel and causes a potential fuel tank flammability hazard. One solution to this increased volatility is to make polyoxymethylenes with the general formula of CH{sub 3}O(CH{sub 2}O){sub x}CH{sub 3} where x > 2. The molecules are similar to methylal, but have higher molecular weights and thus higher viscosities and substantially lower vapor pressures. Therefore, their flash points will be compatible with regular diesel fuel. The polyoxymethylenes are expected to have combustion properties similar to methylal. It is theorized that by analogy with hydrocarbons, the ignition quality (i.e., cetane number) of the polyoxymethylenes will be better than that of methylal.

Dodge, L.; Naegeli, D. [Southwest Research Institute, San Antonio, TX (United States)

1994-06-01T23:59:59.000Z

24

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.

25

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

26

Staged combustion with piston engine and turbine engine supercharger  

DOE Patents (OSTI)

A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

Fischer, Larry E. (Los Gatos, CA); Anderson, Brian L. (Lodi, CA); O' Brien, Kevin C. (San Ramon, CA)

2006-05-09T23:59:59.000Z

27

Staged combustion with piston engine and turbine engine supercharger  

DOE Patents (OSTI)

A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

Fischer, Larry E. (Los Gatos, CA); Anderson, Brian L. (Lodi, CA); O' Brien, Kevin C. (San Ramon, CA)

2011-11-01T23:59:59.000Z

28

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

29

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

30

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

31

Electrical Power Grid Delivery Dynamic Analysis: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output  

DOE Green Energy (OSTI)

This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

Diana K. Grauer; Michael E. Reed

2011-11-01T23:59:59.000Z

32

Small-Scale Industrial Cogeneration: Design Using Reciprocating Engines and Absorption Chillers  

E-Print Network (OSTI)

This paper describes a packaged cogeneration system designed for light industrial applications (i.e., situations where a user wants a maximum of 1 MW of cogenerated electricity). The design employs reciprocating engines fueled with natural gas or liquid fuels. Waste heat from the engine exhaust and jacket water is used to drive an absorption chiller. This approach yields a variety of unique advantages, including: (1) ability to satisfy the needs of facilities that have a low ratio of thermal-to-electric energy needs, and which have significant refrigeration loads, and (2) the ability to provide greater operating efficiency in the <1 MW size range, especially at part load, when compared to systems based on gas turbines or steam turbines. Although component substitution can be used to vary the energy output capabilities of the system, the discussion focuses on a unit having an electrical rating of 418 kW and cooling capacity of 160 tons. This paper discusses component selection, operating parameters, economics, maintenance issues, and other factors.

Wagner, J. R.

1985-05-01T23:59:59.000Z

33

Turbine adapted maps for turbocharger engine matching  

Science Conference Proceedings (OSTI)

This paper presents a new representation of the turbine performance maps oriented for turbocharger characterization. The aim of this plot is to provide a more compact and suited form to implement in engine simulation models and to interpolate data from turbocharger test bench. The new map is based on the use of conservative parameters as turbocharger power and turbine mass flow to describe the turbine performance in all VGT positions. The curves obtained are accurately fitted with quadratic polynomials and simple interpolation techniques give reliable results. Two turbochargers characterized in an steady flow rig were used for illustrating the representation. After being implemented in a turbocharger submodel, the results obtained with the model have been compared with success against turbine performance evaluated in engine tests cells. A practical application in turbocharger matching is also provided to show how this new map can be directly employed in engine design. (author)

Tancrez, M. [PSA - Peugeot Citroen, 18 rue des fauvelles, La Garenne-Colombes (France); Galindo, J.; Guardiola, C.; Fajardo, P.; Varnier, O. [CMT - Motores Termicos, Universidad Politecnica de Valencia (Spain)

2011-01-15T23:59:59.000Z

34

Airfoil seal system for gas turbine engine  

SciTech Connect

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

Diakunchak, Ihor S.

2013-06-25T23:59:59.000Z

35

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

36

Improving the Thermal Output Availability of Reciprocating Engine Cogeneration Systems by Mechanical Vapor Compression  

E-Print Network (OSTI)

An innovative, alternative reciprocating engine cogeneration system is being developed that can provide the industrial and commercial end-user with electric power and process heat that is totally in the form of high-pressure steam. Current reciprocating engine systems can now provide only low-pressure steam or hot water from the engine jacket, and this often is not needed or not the most appropriate.

Becker, F. E.; DiBella, F. A.; Lamphere, F.

1986-06-01T23:59:59.000Z

37

Development of Advanced Natural Gas Reciprocating Engines for the DR Market  

Science Conference Proceedings (OSTI)

Currently, reciprocating engines are a key facet of the distributed resources (DR) market, ranging from residential, commercial, and industrial standby generators to peaking, peakshaving, prime power, and cogeneration units used in commercial, institutional, and industrial applications. Reciprocating engines have over 100 years of development and application experience for mobile and stationary uses, with several million engines produced annually. In more recent time, forecasts have been made about decre...

2000-12-19T23:59:59.000Z

38

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

39

Materials in Turbine Engine Environments - Programmaster.org  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2013. Symposium, MS&T'13 Plenary. Presentation Title, Materials in Turbine Engine...

40

Effects of piston design and lubricant selection on reciprocating engine friction  

E-Print Network (OSTI)

The interaction between the piston and the liner in a reciprocating engine is of much interest because it affects reliability, noise, and efficiency. This study evaluated various changes to the piston skirt with the specific ...

Moughon, Luke (Luke Frank)

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

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

42

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

43

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

44

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...

45

Barr Engineering Statement of Methodology Rosemount Wind Turbine...  

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

Barr Engineering Statement of Methodology Rosemount Wind Turbine Simulations by Truescape Visual Reality, DOEEA-1791 (May 2010) Barr Engineering Statement of Methodology Rosemount...

46

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

47

Hydro-flow supra-turbine engine  

SciTech Connect

A turbine engine operates at high pressure and at relatively low temperatures and revolutions per minute through the use of special carburetion, compressor, combustion unit, and turbine arrangements. The system is characterized by the use of water which is vaporized and concurrently reduces the temperature of the vaporized fuel and air mixture as compression occurs, and is not physically intermixed with the combustion gases until after initial combustion takes place. The compressor includes a pair of back-to-back, four stage composite compressors to which synchronized dual carburetion or meter-flow arrangements separately supply water and gasoline or other fuel, along with air. The water absorbs heat from the compression of both of the two compressors, and the resultant vaporous product gases are routed to the jacket of a combustion chamber in which the compressed fuel and air mixture is burned. Following initial ignition and some burning of the fuel, the superheated steam and combustion products are combined, and the combination is supplied to a multistage transverse flow turbine having in the order of 17 pressure stages. The turbine includes arrangements for directing the high pressure gases back and forth through the rotor blades at different radial distances from the axis of the turbine. Exhaust gases from the turbine are applied to a ''floating'' muffler, including a rotatable inner chamber to facilitate mixing exhaust gases with the ambient air, and to disperse the high moisture content of the exhaust gases.

Neale, A.B.

1981-08-04T23:59:59.000Z

48

LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES  

Science Conference Proceedings (OSTI)

This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston/ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and emissions. An iterative process of simulation, experimentation and analysis, are being followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. To date, a detailed set of piston/ring dynamic and friction models have been developed and applied that illustrated the fundamental relationships between design parameters and friction losses. Various low-friction strategies and ring-design concepts have been explored, and engine experiments have been done on a full-scale Waukesha VGF F18 in-line 6 cylinder power generation engine rated at 370 kW at 1800 rpm. Current accomplishments include designing and testing ring-packs using a subtle top-compression-ring profile (skewed barrel design), lowering the tension of the oil-control ring, employing a negative twist to the scraper ring to control oil consumption. Initial test data indicate that piston ring-pack friction was reduced by 35% by lowering the oil-control ring tension alone, which corresponds to a 1.5% improvement in fuel efficiency. Although small in magnitude, this improvement represents a first step towards anticipated aggregate improvements from other strategies. Other ring-pack design strategies to lower friction have been identified, including reduced axial distance between the top two rings, tilted top-ring groove. Some of these configurations have been tested and some await further evaluation. Colorado State University performed the tests and Waukesha Engine Dresser, Inc. provided technical support. Key elements of the continuing work include optimizing the engine piston design, application of surface and material developments in conjunction with improved lubricant properties, system modeling and analysis, and continued technology demonstration in an actual full-sized reciprocating natural-gas engine.

Victor W. Wong; Tian Tian; Grant Smedley; Jeffrey Jocsak

2004-09-30T23:59:59.000Z

49

On use of CO{sub 2} chemiluminescence for combustion metrics in natural gas fired reciprocating engines.  

DOE Green Energy (OSTI)

Flame chemiluminescence is widely acknowledged to be an indicator of heat release rate in premixed turbulent flames that are representative of gas turbine combustion. Though heat release rate is an important metric for evaluating combustion strategies in reciprocating engine systems, its correlation with flame chemiluminescence is not well studied. To address this gap an experimental study was carried out in a single-cylinder natural gas fired reciprocating engine that could simulate turbocharged conditions with exhaust gas recirculation. Crank angle resolved spectra (266-795 nm) of flame luminosity were measured for various operational conditions by varying the ignition timing for MBT conditions and by holding the speed at 1800 rpm and Brake Mean effective Pressure (BMEP) at 12 bar. The effect of dilution on CO*{sub 2}chemiluminescence intensities was studied, by varying the global equivalence ratio (0.6-1.0) and by varying the exhaust gas recirculation rate. It was attempted to relate the measured chemiluminescence intensities to thermodynamic metrics of importance to engine research -- in-cylinder bulk gas temperature and heat release rate (HRR) calculated from measured cylinder pressure signals. The peak of the measured CO*{sub 2} chemiluminescence intensities coincided with peak pressures within {+-}2 CAD for all test conditions. For each combustion cycle, the peaks of heat release rate, spectral intensity and temperature occurred in that sequence, well separated temporally. The peak heat release rates preceded the peak chemiluminescent emissions by 3.8-9.5 CAD, whereas the peak temperatures trailed by 5.8-15.6 CAD. Such a temporal separation precludes correlations on a crank-angle resolved basis. However, the peak cycle heat release rates and to a lesser extent the peak cycle temperatures correlated well with the chemiluminescent emission from CO*{sub 2}. Such observations point towards the potential use of flame chemiluminescence to monitor peak bulk gas temperatures as well as peak heat release rates in natural gas fired reciprocating engines.

Gupta, S. B.; Bihari, B.; Biruduganti, M.; Sekar, R.; Zigan, J. (Energy Systems); (Cummins Technical Center)

2011-01-01T23:59:59.000Z

50

Energy Conservation Potential in Natural Gas Fueled Reciprocating Engines - A Preliminary Market Evaluation  

E-Print Network (OSTI)

A study was undertaken of the usage rates of both fuel and lubricants in reciprocating engines fueled with natural gas. The study was conducted to determine the potential for energy conservation, if use is made of more fuel efficient natural gas engine oils. Governmental and non-governmental published reports and personal interviews with users, suppliers, and manufacturers were utilized in estimating fuel and lubricant consumption figures for the year 1976. Certain important facts emerged: 1) The installed horsepower of reciprocating engines fueled by natural gas was estimated at 38,800,000 hp. 2) Reciprocating engines fueled by natural gas operated an estimated 115.2 billion brake horsepower - hours. 3) Total natural gas consumed to operate these reciprocating engines in 1976 was estimated at 962 billion cubic feet. 4) The estimated crankcase and cylinder lubricants consumed in natural gas reciprocating engines in 1976 was 33.6 million gallons. This figure represents 2% of the total United States lubricant usage. 5) Widespread use of more fuel efficient crankcase and cylinder lubricants (containing stable colloidal additives) could result in a savings of 28,850,000,000 cubic feet of natural gas each year. The natural gas thus saved would be sufficient to serve all residential customers in the metropolitan Houston area for nine (9) months of each year.

Johnson, D. M.

1979-01-01T23:59:59.000Z

51

Dynamic Analysis of Electrical Power Grid Delivery: Using Prime Mover Engines to Balance Dynamic Wind Turbine Output  

DOE Green Energy (OSTI)

This paper presents an investigation into integrated wind + combustion engine high penetration electrical generation systems. Renewable generation systems are now a reality of electrical transmission. Unfortunately, many of these renewable energy supplies are stochastic and highly dynamic. Conversely, the existing national grid has been designed for steady state operation. The research team has developed an algorithm to investigate the feasibility and relative capability of a reciprocating internal combustion engine to directly integrate with wind generation in a tightly coupled Hybrid Energy System. Utilizing the Idaho National Laboratory developed Phoenix Model Integration Platform, the research team has coupled demand data with wind turbine generation data and the Aspen Custom Modeler reciprocating engine electrical generator model to investigate the capability of reciprocating engine electrical generation to balance stochastic renewable energy.

Diana K. Grauer

2011-10-01T23:59:59.000Z

52

LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES  

Science Conference Proceedings (OSTI)

This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston and piston ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and wear. An iterative process of simulation, experimentation and analysis is being followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. To date, a detailed set of piston and piston-ring dynamic and friction models have been developed and applied that illustrate the fundamental relationships among mechanical, surface/material and lubricant design parameters and friction losses. Demonstration of low-friction ring-pack designs in the Waukesha VGF 18GL engine confirmed total engine FEMP (friction mean effective pressure) reduction of 7-10% from the baseline configuration without significantly increasing oil consumption or blow-by flow. This represents a substantial (30-40%) reduction of the ringpack friction alone. The measured FMEP reductions were in good agreement with the model predictions. Further improvements via piston, lubricant, and surface designs offer additional opportunities. Tests of low-friction lubricants are in progress and preliminary results are very promising. The combined analysis of lubricant and surface design indicates that low-viscosity lubricants can be very effective in reducing friction, subject to component wear for extremely thin oils, which can be mitigated with further lubricant formulation and/or engineered surfaces. Hence a combined approach of lubricant design and appropriate wear reduction offers improved potential for minimum engine friction loss. Piston friction studies indicate that a flatter piston with a more flexible skirt, together with optimizing the waviness and film thickness on the piston skirt offer significant friction reduction. Combined with low-friction ring-pack, material and lubricant parameters, a total power cylinder friction reduction of 30-50% is expected, translating to an engine efficiency increase of two percentage points from its current baseline towards the goal of 50% ARES engine efficiency. The design strategies developed in this study have promising potential for application in all modern reciprocating engines as they represent simple, low-cost methods to extract significant fuel savings. The current program has possible spinoffs and applications in other industries as well, including transportation, CHP, and diesel power generation. The progress made in this program has wide engine efficiency implications, and potential deployment of low-friction engine components or lubricants in the near term is possible as current investigations continue.

Victor Wong; Tian Tian; Luke Moughon; Rosalind Takata; Jeffrey Jocsak

2006-03-31T23:59:59.000Z

53

Optical monitoring system for a turbine engine  

SciTech Connect

The monitoring system for a gas turbine engine including a viewing tube assembly having an inner end and an outer end. The inner end is located adjacent to a hot gas flow path within the gas turbine engine and the outer end is located adjacent to an outer casing of the gas turbine engine. An aperture wall is located at the inner end of the viewing tube assembly and an optical element is located within the viewing tube assembly adjacent to the inner end and is spaced from the aperture wall to define a cooling and purge chamber therebetween. An aperture is defined in the aperture wall for passage of light from the hot gas flow path to the optical element. Swirl passages are defined in the viewing tube assembly between the aperture wall and the optical element for passage of cooling air from a location outside the viewing tube assembly into the chamber, wherein swirl passages effect a swirling movement of air in a circumferential direction within the chamber.

Lemieux, Dennis H; Smed, Jan P; Williams, James P; Jonnalagadda, Vinay

2013-05-14T23:59:59.000Z

54

LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES  

SciTech Connect

This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston/ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and emissions. A detailed set of piston/ring dynamic and friction models have been developed and applied that illustrated the fundamental relationships between design parameters and friction losses. Various low-friction strategies and concepts have been explored, and engine experiments will validate these concepts. An iterative process of experimentation, simulation and analysis, will be followed with the goal of demonstrating a complete optimized low-friction engine system. As planned, MIT has developed guidelines for an initial set of low-friction piston-ring-pack designs. Current recommendations focus on subtle top-piston-ring and oil-control-ring characteristics. A full-scale Waukesha F18 engine has been installed at Colorado State University and testing of the baseline configuration is in progress. Components for the first design iteration are being procured. Subsequent work includes examining the friction and engine performance data and extending the analyses to other areas to evaluate opportunities for further friction improvement and the impact on oil consumption/emission and wear, towards demonstrating an optimized reduced-friction engine system.

Victor W. Wong; Tian Tian; Grant Smedley

2003-08-28T23:59:59.000Z

55

Closed-loop air cooling system for a turbine engine  

DOE Patents (OSTI)

Method and apparatus are disclosed for providing a closed-loop air cooling system for a turbine engine. The method and apparatus provide for bleeding pressurized air from a gas turbine engine compressor for use in cooling the turbine components. The compressed air is cascaded through the various stages of the turbine. At each stage a portion of the compressed air is returned to the compressor where useful work is recovered.

North, William Edward (Winter Springs, FL)

2000-01-01T23:59:59.000Z

56

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).

57

LOW-ENGINE-FRICTION TECHNOLOGY FOR ADVANCED NATURAL-GAS RECIPROCATING ENGINES  

Science Conference Proceedings (OSTI)

This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston and piston ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and wear. An iterative process of simulation, experimentation and analysis is being followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. To date, a detailed set of piston and piston-ring dynamic and friction models have been developed and applied that illustrate the fundamental relationships between design parameters and friction losses. Low friction ring designs have already been recommended in a previous phase, with full-scale engine validation partially completed. Current accomplishments include the addition of several additional power cylinder design areas to the overall system analysis. These include analyses of lubricant and cylinder surface finish and a parametric study of piston design. The Waukesha engine was found to be already well optimized in the areas of lubricant, surface skewness and honing cross-hatch angle, where friction reductions of 12% for lubricant, and 5% for surface characteristics, are projected. For the piston, a friction reduction of up to 50% may be possible by controlling waviness alone, while additional friction reductions are expected when other parameters are optimized. A total power cylinder friction reduction of 30-50% is expected, translating to an engine efficiency increase of two percentage points from its current baseline towards the goal of 50% efficiency. Key elements of the continuing work include further analysis and optimization of the engine piston design, in-engine testing of recommended lubricant and surface designs, design iteration and optimization of previously recommended technologies, and full-engine testing of a complete, optimized, low-friction power cylinder system.

Victor Wong; Tian Tian; Luke Moughon; Rosalind Takata; Jeffrey Jocsak

2005-09-30T23:59:59.000Z

58

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 ...

59

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...

60

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.

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Barr Engineering Statement of Methodology Rosemount Wind Turbine  

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

Barr Engineering Statement of Methodology Rosemount Wind Turbine Barr Engineering Statement of Methodology Rosemount Wind Turbine Simulations by Truescape Visual Reality, DOE/EA-1791 (May 2010) Barr Engineering Statement of Methodology Rosemount Wind Turbine Simulations by Truescape Visual Reality, DOE/EA-1791 (May 2010) Barr Engineering, Minneapolis engaged Truescape in May 2010 to: 1) Provide a series of TrueViewTM2 "human field of view" survey controlled photo simulations from pre-determined viewpoint locations to assist with the assessment of the potential visibility of a proposed turbine, and 2) Simulate two different height options for the turbine tower, being 80m vs. 100m. Barr Engineering Statement of Methodology Rosemount Wind Turbine Simulations by Truescape Visual Reality, DOE/EA-1791 (May 2010)

62

Barr Engineering Statement of Methodology Rosemount Wind Turbine  

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

Barr Engineering Statement of Methodology Rosemount Wind Turbine Barr Engineering Statement of Methodology Rosemount Wind Turbine Simulations by Truescape Visual Reality, DOE/EA-1791 (May 2010) Barr Engineering Statement of Methodology Rosemount Wind Turbine Simulations by Truescape Visual Reality, DOE/EA-1791 (May 2010) Barr Engineering, Minneapolis engaged Truescape in May 2010 to: 1) Provide a series of TrueViewTM2 "human field of view" survey controlled photo simulations from pre-determined viewpoint locations to assist with the assessment of the potential visibility of a proposed turbine, and 2) Simulate two different height options for the turbine tower, being 80m vs. 100m. Barr Engineering Statement of Methodology Rosemount Wind Turbine Simulations by Truescape Visual Reality, DOE/EA-1791 (May 2010)

63

Volumetric Geometry Reconstruction of Turbine Blades for Aircraft Engines  

E-Print Network (OSTI)

Volumetric Geometry Reconstruction of Turbine Blades for Aircraft Engines David Gro?mann1 and Bert-spline parametrization of turbine blades from measurement data generated by optical scanners. This new representation elements. We focus on the industrial applicability of the framework, by using standard turbine blade

Jüttler, Bert

64

Turbine engine component with cooling passages  

DOE Patents (OSTI)

A component for use in a turbine engine including a first member and a second member associated with the first member. The second member includes a plurality of connecting elements extending therefrom. The connecting elements include securing portions at ends thereof that are received in corresponding cavities formed in the first member to attach the second member to the first member. The connecting elements are constructed to space apart a first surface of the second member from a first surface of the first member such that at least one cooling passage is formed between adjacent connecting elements and the first surface of the second member and the first surface of the first member.

Arrell, Douglas J. (Oviedo, FL); James, Allister W. (Orlando, FL)

2012-01-17T23:59:59.000Z

65

Low-Engine-Friction Technology for Advanced Natural-Gas Reciprocating Engines  

SciTech Connect

This program aims at improving the efficiency of advanced natural-gas reciprocating engines (ANGRE) by reducing piston and piston ring assembly friction without major adverse effects on engine performance, such as increased oil consumption and wear. An iterative process of simulation, experimentation and analysis has been followed towards achieving the goal of demonstrating a complete optimized low-friction engine system. In this program, a detailed set of piston and piston-ring dynamic and friction models have been adapted and applied that illustrate the fundamental relationships among mechanical, surface/material and lubricant design parameters and friction losses. Demonstration of low-friction ring-pack designs in the Waukesha VGF 18GL engine confirmed ring-pack friction reduction of 30-40%, which translates to total engine FEMP (friction mean effective pressure) reduction of 7-10% from the baseline configuration without significantly increasing oil consumption or blow-by flow. The study on surface textures, including roughness characteristics, cross hatch patterns, dimples and grooves have shown that even relatively small-scale changes can have a large effect on ring/liner friction, in some cases reducing FMEP by as much as 30% from a smooth surface case. The measured FMEP reductions were in good agreement with the model predictions. The combined analysis of lubricant and surface design indicates that low-viscosity lubricants can be very effective in reducing friction, subject to component wear for extremely thin oils, which can be mitigated with further lubricant formulation and/or engineered surfaces. Hence a combined approach of lubricant design and appropriate wear reduction offers improved potential for minimum engine friction loss. Testing of low-friction lubricants showed that total engine FMEP reduced by up to {approx}16.5% from the commercial reference oil without significantly increasing oil consumption or blow-by flow. Piston friction studies indicate that a flatter piston with a more flexible skirt, together with optimizing the waviness and film thickness on the piston skirt offer significant friction reduction. Combined with low-friction ring-pack, material and lubricant parameters, a total power cylinder friction reduction of 30-50% is expected, translating to an engine efficiency increase of two percentage points from its current baseline towards the goal of 50% ARES engine efficiency. The design strategies developed in this study have promising potential for application in all modern reciprocating engines as they represent simple, low-cost methods to extract significant fuel savings. The current program has possible spinoffs and applications in other industries as well, including transportation, CHP, and diesel power generation. The progress made in this program has wide engine efficiency implications, and potential deployment of low-friction engine components or lubricants in the near term is quite possible.

Victor Wong; Tian Tian; G. Smedley; L. Moughon; Rosalind Takata; J. Jocsak

2006-11-30T23:59:59.000Z

66

Reciprocating Engines for Stationary Power Generation: Technology, Products, Players, and Business Issues  

Science Conference Proceedings (OSTI)

Reciprocating engines (REs) have long played an important role in the distributed resources market and should, in the future, continue to provide end-use customers and energy companies benefits in both onsite and grid-connected power generation service. This report presents a comprehensive worldwide overview of RE technology and the business climate for these products.

2000-01-18T23:59:59.000Z

67

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

68

Evaluating thermographic phosphors in an operating turbine engine  

DOE Green Energy (OSTI)

The results of a field test in a commercial turbine engine showed that we can remotely measure the temperature of engine components in operating engines using thermographic phosphors. The remote- measurement method exploits the temperature dependence of the characteristic decay time of the laser-induced fluorescence of thermographic phosphors. This paper summarizes recent work leading up to and including a successful test of the thermographic-phosphor method in an operating turbine engine. 6 refs., 7 figs.

Noel, B.W.; Borella, H.M. (Los Alamos National Lab., NM (USA)); Lewis, W.; Turley, W.D. (EG and G Energy Measurements, Inc., Goleta, CA (USA)); Beshears, D.L.; Capps, G.J.; Cates, M.R.; Muhs, J.D.; Tobin, K.W. (Oak Ridge National Lab., TN (USA))

1989-01-01T23:59:59.000Z

69

Benchmarking of New and Emerging Reciprocating Engine Products  

Science Conference Proceedings (OSTI)

Internal combustion engines (ICEs) fueled by diesel and natural gas continue to be a low-cost option for distributed generation of electric power. This report presents a summary of new and emerging products and technologies from major engine manufacturers in the United States, Europe, and the Far East.

2001-12-20T23:59:59.000Z

70

Hydrogen-air mixing evaluation in reciprocating engines  

DOE Green Energy (OSTI)

This report presents the results of a computational study of fuel-air mixing in a hydrogen jet using a spark-ignited, hydrogen-fueled engine. The computational results were compared with experimental measurement being conducted at the Musashi Institute of Technology in Tokyo, Japan. The hydrogen-air mixing work was directed at understanding the extreme sensitivity of ignition to spark plug location and spark timing in direct-injected, hydrogen-fueled engines.

Dodge, L; Naegeli, D [Southwest Research Inst., San Antonio, TX (United States)

1994-06-01T23:59:59.000Z

71

Injector spray characterization of methanol in reciprocating engines  

DOE Green Energy (OSTI)

This report covers a study that addressed cold-starting problems in alcohol-fueled, spark-ignition engines by using fine-spray port-fuel injectors to inject fuel directly into the cylinder. This task included development and characterization of some very fine-spray, port-fuel injectors for a methanol-fueled spark-ignition engine. After determining the spray characteristics, a computational study was performed to estimate the evaporation rate of the methanol fuel spray under cold-starting and steady-state conditions.

Dodge, L.; Naegeli, D. [Southwest Research Inst., San Antonio, TX (United States)

1994-06-01T23:59:59.000Z

72

"Fish Friendly" Hydropower Turbine Development and Deployment: Alden Turbine Preliminary Engineering and Model Testing  

Science Conference Proceedings (OSTI)

This report presents the results of a collaborative research project funded by the Electric Power Research Institute (EPRI), the U.S. Department of Energy (DOE), and hydropower industry partners with the objective of completing the remaining developmental engineering required for a "fish-friendly" hydropower turbine called the Alden turbine. Earlier engineering and research that was started in 1995 and completed in 2008 established a viable conceptual design. Additional engineering completed in 2009 and ...

2011-10-07T23:59:59.000Z

73

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

74

Evaluation of Reformer Produced Synthesis Gas for Emissions Reductions in Natural Gas Reciprocating Engines  

DOE Green Energy (OSTI)

Rolls-Royce Fuel Cell Systems (US) Inc. (RRFCS) has developed a system that produces synthesis gas from air and natural gas. A near-term application being considered for this technology is synthesis gas injection into reciprocating engines for reducing NOx emissions. A proof of concept study using bottled synthesis gas and a two-stroke reciprocating engine showed that injecting small amounts of highflammables content synthesis gas significantly improved combustion stability and enabled leaner engine operation resulting in over 44% reduction in NOx emissions. The actual NOx reduction that could be achieved in the field is expected to be engine specific, and in many cases may be even greater. RRFCS demonstrated that its synthesis gas generator could produce synthesis gas with the flammables content that was successfully used in the engine testing. An economic analysis of the synthesis gas approach estimates that its initial capital cost and yearly operating cost are less than half that of a competing NOx reduction technology, Selective Catalytic Reduction. The next step in developing the technology is an integrated test of the synthesis gas generator with an engine to obtain reliability data for system components and to confirm operating cost. RRFCS is actively pursuing opportunities to perform the integrated test. A successful integrated test would demonstrate the technology as a low-cost option to reduce NOx emissions from approximately 6,000 existing two-stroke, natural gas-fired reciprocating engines used on natural gas pipelines in North America. NOx emissions reduction made possible at a reasonable price by this synthesis gas technology, if implemented on 25% of these engines, would be on the order of 25,000 tons/year.

Mark V. Scotto; Mark A. Perna

2010-05-30T23:59:59.000Z

75

Evaluation of Reformer Produced Synthesis Gas for Emissions Reductions in Natural Gas Reciprocating Engines  

DOE Green Energy (OSTI)

Rolls-Royce Fuel Cell Systems (US) Inc. (RRFCS) has developed a system that produces synthesis gas from air and natural gas. A near-term application being considered for this technology is synthesis gas injection into reciprocating engines for reducing NO{sub x} emissions. A proof of concept study using bottled synthesis gas and a two-stroke reciprocating engine showed that injecting small amounts of high-flammable content synthesis gas significantly improved combustion stability and enabled leaner engine operation resulting in over 44% reduction in NO{sub x} emissions. The actual NO{sub x} reduction that could be achieved in the field is expected to be engine specific, and in many cases may be even greater. RRFCS demonstrated that its synthesis gas generator could produce synthesis gas with the flammable content that was successfully used in the engine testing. An economic analysis of the synthesis gas approach estimates that its initial capital cost and yearly operating cost are less than half that of a competing NO{sub x} reduction technology, Selective Catalytic Reduction. The next step in developing the technology is an integrated test of the synthesis gas generator with an engine to obtain reliability data for system components and to confirm operating cost. RRFCS is actively pursuing opportunities to perform the integrated test. A successful integrated test would demonstrate the technology as a low-cost option to reduce NO{sub x} emissions from approximately 6,000 existing two-stroke, natural gas-fired reciprocating engines used on natural gas pipelines in North America. NO{sub x} emissions reduction made possible at a reasonable price by this synthesis gas technology, if implemented on 25% of these engines, would be on the order of 25,000 tons/year.

Mark Scotto

2010-05-30T23:59:59.000Z

76

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

77

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

78

Inspection system for a turbine blade region of a turbine engine  

DOE Patents (OSTI)

An inspection system formed at least from a viewing tube for inspecting aspects of a turbine engine during operation of the turbine engine. An outer housing of the viewing tube may be positioned within a turbine engine using at least one bearing configured to fit into an indentation of a support housing to form a ball and socket joint enabling the viewing tube to move during operation as a result of vibrations and other movements. The viewing tube may also include one or more lenses positioned within the viewing tube for viewing the turbine components. The lenses may be kept free of contamination by maintaining a higher pressure in the viewing tube than a pressure outside of the viewing tube and enabling gases to pass through an aperture in a cap at a viewing end of the viewing tube.

Smed, Jan P. (Winter Springs, FL); Lemieux, Dennis H. (Casselberry, FL); Williams, James P. (Orlando, FL)

2007-06-19T23:59:59.000Z

79

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

80

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 "reciprocating turbine engine" 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

Solid fuel combustion system for gas turbine engine  

DOE Patents (OSTI)

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

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

1993-01-01T23:59:59.000Z

82

Serial cooling of a combustor for a gas turbine engine  

DOE Patents (OSTI)

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

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

2001-01-01T23:59:59.000Z

83

Characteristics of the Limit Cycle of a Reciprocating Quantum Heat Engine  

E-Print Network (OSTI)

When a reciprocating heat engine is started it eventually settles to a stable mode of operation. The approach of a first principle quantum heat engine toward this stable limit cycle is studied. The engine is based on a working medium consisting of an ensemble of quantum systems composed of two coupled spins. A four stroke cycle of operation is studied, with two {\\em isochore} branches where heat is transferred from the hot/cold baths and two {\\em adiabats} where work is exchanged. The dynamics is generated by a completely positive map. It has been shown that the performance of this model resembles an engine with intrinsic friction. The quantum conditional entropy is employed to prove the monotonic approach to a limit cycle. Other convex measures, such as the quantum distance display the same monotonic approach. The equations of motion of the engine are solved for the different branches and are combined to a global propagator that relates the state of the engine in the beginning of the cycle to the state after one period of operation of the cycle. The eigenvalues of the propagator define the rate of relaxation toward the limit cycle. A longitudinal and transverse mode of approach to the limit cycle is identified. The entropy balance is used to explore the necessary conditions which lead to a stable limit cycle. The phenomena of friction can be identified with a zero change in the von Neumann entropy of the working medium.

Tova Feldmann; Ronnie Kosloff

2004-05-28T23:59:59.000Z

84

Characteristics of the Limit Cycle of a Reciprocating Quantum Heat Engine  

E-Print Network (OSTI)

When a reciprocating heat engine is started it eventually settles to a stable mode of operation. The approach of a first principle quantum heat engine toward this stable limit cycle is studied. The engine is based on a working medium consisting of an ensemble of quantum systems composed of two coupled spins. A four stroke cycle of operation is studied, with two {\\em isochore} branches where heat is transferred from the hot/cold baths and two {\\em adiabats} where work is exchanged. The dynamics is generated by a completely positive map. It has been shown that the performance of this model resembles an engine with intrinsic friction. The quantum conditional entropy is employed to prove the monotonic approach to a limit cycle. Other convex measures, such as the quantum distance display the same monotonic approach. The equations of motion of the engine are solved for the different branches and are combined to a global propagator that relates the state of the engine in the beginning of the cycle to the state after...

Feldmann, T; Feldmann, Tova; Kosloff, Ronnie

2004-01-01T23:59:59.000Z

85

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

86

Advanced turbine design for coal-fueled engines  

DOE Green Energy (OSTI)

The objective of this task is to perform a technical assessment of turbine blading for advanced second generation PFBC conditions, identify specific problems/issues, and recommend an approach for solving any problems identified. A literature search was conducted, problems associated with hot corrosion defined and limited experiments performed. Sulfidation corrosion occurs in industrial, marine and aircraft gas turbine engines and is due to the presence of condensed alkali (sodium) sulfates. The principle source of the alkali in industrial, marine and aircraft gas turbine engines is sea salt crystals. The principle source of the sulfur is not the liquid fuels, but the same ocean born crystals. Moreover deposition of the corrosive salt occurs primarily by a non-equilibrium process. Sodium will be present in the cleaned combusted gases that enter the PFBC turbine. Although equilibrium condensation is not favored, deposition via impaction is probable. Marine gas turbines operate in sodium chloride rich environments without experiencing the accelerated attack noted in coal fired boilers where condensed chlorides contact metallic surfaces. The sulfates of calcium and magnesium are the products of the reactions used to control sulfur. Based upon industrial gas turbine experience and laboratory tests, calcium and magnesium sulfates are, at temperatures up to 1500[degrees]F (815[degrees]C), relatively innocuous salts. In this study it is found that at 1650[degrees]F (900[degrees]C) and above, calcium sulfate becomes an aggressive corrodent.

Bornstein, N.S.

1992-07-17T23:59:59.000Z

87

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

SciTech Connect

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

Steward, W. Gene

1999-11-14T23:59:59.000Z

88

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

DOE Green Energy (OSTI)

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

Steward, W. Gene

1999-11-14T23:59:59.000Z

89

Isogeometric Simulation of Turbine Blades for Aircraft Engines David Gromann1  

E-Print Network (OSTI)

Isogeometric Simulation of Turbine Blades for Aircraft Engines David Gro?mann1 , Bert Jüttler2, in the challenging field of aircraft engines. We study the deformation of turbine blades under the assumption, manufacturing and repairing turbine engines for aircrafts. A challenging task in this field is the efficient

Jüttler, Bert

90

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

E-Print Network (OSTI)

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

Ray, Asok

91

Turbine-Generator Topics for Plant Engineers: Residual Magnetism  

Science Conference Proceedings (OSTI)

The undesirable magnetization of components of rotating equipment used in the generation of electric power is a problem that has been recognized for many years; but wide understanding of the origins, detection techniques, remediation, and avoidance principles of residual magnetization has been lacking. As part of the series Turbine-Generator Topics for Plant Engineers, EPRI commissioned this report with the purpose of providing engineers active in the operation and maintenance of power ...

2013-08-23T23:59:59.000Z

92

Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines  

SciTech Connect

The objective of this project is to identify, develop, test, and commercialize emissions control and monitoring technologies that can be implemented by exploration and production (E&P) operators to significantly lower the cost of environmental compliance and expedite project permitting. The project team takes considerable advantage of the emissions control research and development efforts and practices that have been underway in the gas pipeline industry for the last 12 years. These efforts and practices are expected to closely interface with the E&P industry to develop cost-effective options that apply to widely-used field and gathering engines, and which can be readily commercialized. The project is separated into two phases. Phase 1 work establishes an E&P industry liaison group, develops a frequency distribution of installed E&P field engines, and identifies and assesses commercially available and emerging engine emissions control and monitoring technologies. Current and expected E&P engine emissions and monitoring requirements are reviewed, and priority technologies are identified for further development. The identified promising technologies are tested on a laboratory engine to confirm their generic viability. In addition, a full-scale field test of prototype emissions controls will be conducted on at least ten representative field engine models with challenging emissions profiles. Emissions monitoring systems that are integrated with existing controls packages will be developed. Technology transfer/commercialization is expected to be implemented through compressor fleet leasing operators, engine component suppliers, the industry liaison group, and the Petroleum Technology Transfer Council. This topical report discusses work completed during Phase 1 of the project Cost Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines. In this report information, data, and results are compiled and summarized from quarterly reports 1 through 15. Results for each of the tasks in Phase 1 are presented.

Kirby S. Chapman; Sarah R. Nuss-Warren

2007-02-01T23:59:59.000Z

93

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

94

Fish-Friendly Hydropower Turbine Development & Deployment: Alden Turbine Preliminary Engineering and Model Testing  

SciTech Connect

The Alden turbine was developed through the U.S. Department of Energy's (DOE's) former Advanced Hydro Turbine Systems Program (1994-2006) and, more recently, through the Electric Power Research Institute (EPRI) and the DOE's Wind & Water Power Program. The primary goal of the engineering study described here was to provide a commercially competitive turbine design that would yield fish passage survival rates comparable to or better than the survival rates of bypassing or spilling flow. Although the turbine design was performed for site conditions corresponding to 92 ft (28 m) net head and a discharge of 1500 cfs (42.5 cms), the design can be modified for additional sites with differing operating conditions. During the turbine development, design modifications were identified for the spiral case, distributor (stay vanes and wicket gates), runner, and draft tube to improve turbine performance while maintaining features for high fish passage survival. Computational results for pressure change rates and shear within the runner passage were similar in the original and final turbine geometries, while predicted minimum pressures were higher for the final turbine. The final turbine geometry and resulting flow environments are expected to further enhance the fish passage characteristics of the turbine. Computational results for the final design were shown to improve turbine efficiencies by over 6% at the selected operating condition when compared to the original concept. Prior to the release of the hydraulic components for model fabrication, finite element analysis calculations were conducted for the stay vanes, wicket gates, and runner to verify that structural design criteria for stress and deflections were met. A physical model of the turbine was manufactured and tested with data collected for power and efficiency, cavitation limits, runaway speed, axial and radial thrust, pressure pulsations, and wicket gate torque. All parameters were observed to fall within ranges expected for conventional radial flow machines. Based on these measurements, the expected efficiency peak for prototype application is 93.64%. These data were used in the final sizing of the supporting mechanical and balance of plant equipment. The preliminary equipment cost for the design specification is $1450/kW with a total supply schedule of 28 months. This equipment supply includes turbine, generator, unit controls, limited balance of plant equipment, field installation, and commissioning. Based on the selected head and flow design conditions, fish passage survival through the final turbine is estimated to be approximately 98% for 7.9-inch (200-mm) fish, and the predicted survival reaches 100% for fish 3.9 inches (100 mm) and less in length. Note that fish up to 7.9- inches (200 mm) in length make up more than 90% of fish entrained at hydro projects in the United States. Completion of these efforts provides a mechanical and electrical design that can be readily adapted to site-specific conditions with additional engineering development comparable to costs associated with conventional turbine designs.

None

2011-10-01T23:59:59.000Z

95

Traction drive automatic transmission for gas turbine engine driveline  

SciTech Connect

A transaxle driveline for a wheeled vehicle has a high speed turbine engine and a torque splitting gearset that includes a traction drive unit and a torque converter on a common axis transversely arranged with respect to the longitudinal centerline of the vehicle. The drive wheels of the vehicle are mounted on a shaft parallel to the turbine shaft and carry a final drive gearset for driving the axle shafts. A second embodiment of the final drive gearing produces an overdrive ratio between the output of the first gearset and the axle shafts. A continuously variable range of speed ratios is produced by varying the position of the drive rollers of the traction unit. After starting the vehicle from rest, the transmission is set for operation in the high speed range by engaging a first lockup clutch that joins the torque converter impeller to the turbine for operation as a hydraulic coupling.

Carriere, Donald L. (Livonia, MI)

1984-01-01T23:59:59.000Z

96

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.

97

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

E-Print Network (OSTI)

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

Waitz, Ian A.

98

Gas turbines engines and transmissions for bus demonstration programs  

SciTech Connect

The technical status report fulfills the contractual requirements of Contract EM-78-C-02-4867. The report covers the period from 31 January 1979 through 30 April 1979 and is a summary of DDA activities for the effort performed on the procurement of eleven (11) Allison GT 404-4 gas turbine engines and five (5) HT740CT and siz (6) V730CT Allison automatic transmissions and the required associated software. (TFD)

Nigro, D.N.

1979-04-01T23:59:59.000Z

99

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

DOE Green Energy (OSTI)

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

Gregory Corman; Krishan Luthra

2005-09-30T23:59:59.000Z

100

Fuel burner and combustor assembly for a gas turbine engine  

DOE Patents (OSTI)

A fuel burner and combustor assembly for a gas turbine engine has a housing within the casing of the gas turbine engine which housing defines a combustion chamber and at least one fuel burner secured to one end of the housing and extending into the combustion chamber. The other end of the fuel burner is arranged to slidably engage a fuel inlet connector extending radially inwardly from the engine casing so that fuel is supplied, from a source thereof, to the fuel burner. The fuel inlet connector and fuel burner coact to anchor the housing against axial movement relative to the engine casing while allowing relative radial movement between the engine casing and the fuel burner and, at the same time, providing fuel flow to the fuel burner. For dual fuel capability, a fuel injector is provided in said fuel burner with a flexible fuel supply pipe so that the fuel injector and fuel burner form a unitary structure which moves with the fuel burner.

Leto, Anthony (Franklin Lakes, NJ)

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

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

102

Industrial Gas Turbine Engine Catalytic Pilot Combustor-Prototype Testing  

SciTech Connect

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

Shahrokh Etemad; Benjamin Baird; Sandeep Alavandi; William Pfefferle

2009-09-30T23:59:59.000Z

103

Synchrotron Mesodiffraction: A Tool for Understanding Turbine Engine  

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

3 3 B. L. Boyce,1 A. Mehta,2 J. O. Peters,3 and R. O. Ritchie4 1Sandia National Laboratories, PO Box 5800, MS: 0889, Albuquerque, NM 87185-0889 blboyce@sandia.gov 2Stanford Synchrotron Radiation Laboratory, 2575 Sand Hill Rd, Menlo Park, CA 94025 3Lufthansa Technik AG, HAM WR 124, Weg Beim Jäger 193, 22335 Hamburg, Germany janoke.peters@lht.dlh.de 4Lawrence Berkeley National Laboratory, MS: 62-203, 1 Cyclotron Rd., Berkeley, CA 94720 roritchie@lbl.gov Aircraft turbine engines routinely experience the ingestion of debris resulting in "foreign object damage" or FOD. Failures associated with foreign object damage have been estimated to cost the aerospace industry $4 billion per year. Often, FOD does not lead to sudden catastrophic failure, yet such damage can dramatically reduce the lifetime of components subjected to cyclic fatigue stresses. Turbine blades, for example, are susceptible to debris strikes and also experience significant fatigue loading. The current study seeks to develop insight into the driving forces and predictability of fatigue failures induced by foreign object damage. Such insight can be used to improve existing design methodologies for turbine engine components and inspection regimens.

104

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

DOE Green Energy (OSTI)

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

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

1994-04-01T23:59:59.000Z

105

FLAMELESS COMBUSTION APPLICATION FOR GAS TURBINE ENGINES IN THE AEROSPACE INDUSTRY.  

E-Print Network (OSTI)

??The objective of this thesis is to review the potential application of flameless combustion technology in aerospace gas turbine engines. Flameless combustion is a regime (more)

OVERMAN, NICHOLAS

2006-01-01T23:59:59.000Z

106

Flameholding Studies for Lean Premixed Fuel Injectors for Application in Gas Turbine Engines.  

E-Print Network (OSTI)

??Due to the ever-increasing demand for energy, it is likely that stationary gas turbine engines will require the use of fuels with a diverse range (more)

Marzelli, Steven

2010-01-01T23:59:59.000Z

107

Advanced Turbine Technology Applications Project (ATTAP) and Hybrid Vehicle Turbine Engine Technology Support project (HVTE-TS): Final summary report  

DOE Green Energy (OSTI)

This final technical report was prepared by Rolls-Royce Allison summarizing the multiyear activities of the Advanced Turbine Technology Applications Project (ATTAP) and the Hybrid Vehicle Turbine Engine Technology Support (HVTE-TS) project. The ATTAP program was initiated in October 1987 and continued through 1993 under sponsorship of the US Department of Energy (DOE), Energy Conservation and Renewable Energy, Office of Transportation Technologies, Propulsion Systems, Advanced Propulsion Division. ATTAP was intended to advance the technological readiness of the automotive ceramic gas turbine engine. The target application was the prime power unit coupled to conventional transmissions and powertrains. During the early 1990s, hybrid electric powered automotive propulsion systems became the focus of development and demonstration efforts by the US auto industry and the Department of energy. Thus in 1994, the original ATTAP technology focus was redirected to meet the needs of advanced gas turbine electric generator sets. As a result, the program was restructured to provide the required hybrid vehicle turbine engine technology support and the project renamed HVTE-TS. The overall objective of the combined ATTAP and HVTE-TS projects was to develop and demonstrate structural ceramic components that have the potential for competitive automotive engine life cycle cost and for operating 3,500 hr in an advanced high temperature turbine engine environment. This report describes materials characterization and ceramic component development, ceramic components, hot gasifier rig testing, test-bed engine testing, combustion development, insulation development, and regenerator system development. 130 figs., 12 tabs.

NONE

1998-12-01T23:59:59.000Z

108

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

109

Turbine-engine applications of thermographic-phosphor temperature measurements  

DOE Green Energy (OSTI)

The thermographic-phosphor (TP) method can measure temperature, heat flux, strain, and other physical quantities remotely in hostile and/or inaccessible environments such as the first-stage turbine components in turbine engines. It is especially useful in situations in which no other known method works well. This paper is a brief review of engine tests that demonstrated the utility of the TP method. For the most part, the results presented here are discussed only qualitatively. The papers in the bibliography describe these and other experiments and results in detail. The first viewgraph summarizes the many desirable features of the TP method. The second viewgraph describes TPs, and the third summarizes how the TP method works. To measure single-point temperatures in turbine-engine applications, we use the decay-time method, which depends on the fact that the luminescence following an impulse of ultraviolet excitation decays, with a characteristic decay time that. Is a monotonically decreasing function of temperature over some range of temperatures. The viewgraph is a set of calibration curves showing the behavior of some useful emission lines for ten important TPs. Consider Lu PO{sub 4}:Eu as an example. Below the {open_quotes}quenching{close_quotes} temperature near 900 Y, the decay time is nearly constant. Above it, the decay time decreases exponentially with the temperature. This strong functional dependence means that one can have a fairly large error in the lifetime measurement, as in environments with poor signal-to-noise ratios (SNRs), yet still obtain high accuracy in the temperature measurement. Our more-recent data up to 1900 K show the same behavior.

Noel, B.W. [Noel Associates, Espanola, NM (United States); Turley, W.D. [EG& G Energy Measurements, Goleta, CA (United States); Allison, S.W. [Martin Marietta Energy Systems, Oak Ridge, TN (United States)

1995-12-31T23:59:59.000Z

110

Steam deflector assembly for a steam injected gas turbine engine  

SciTech Connect

A steam injected gas turbine engine is described having a combustor, a casing for the combustor and an annular manifold comprising a part of the casing, the annular manifold having an exterior port formed therein and a plurality of holes formed in the manifold leading to the interior of the combustor, the improvement comprising a steam carrying line connected to the port and a steam deflector means for protecting the casing from direct impingement by the steam from the steam line and for distributing the steam about the annular manifold, the steam deflector means being mounted adjacent the port and within the manifold.

Holt, G.A. III.

1993-08-31T23:59:59.000Z

111

Fault detection and isolation in aircraft gas turbine engines. Part 2: validation on a simulation test bed  

E-Print Network (OSTI)

319 Fault detection and isolation in aircraft gas turbine engines. Part 2: validation of fault detection and isolation (FDI) in aircraft gas turbine engines. The FDI algorithms are built upon,onasimulationtestbed.Thetestbedisbuiltuponanintegratedmodelofageneric two-spool turbofan aircraft gas turbine engine including the engine control system. Keywords: aircraft

Ray, Asok

112

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

113

UMore Park Wind Turbine Project Loggerhead Shrike Survey Draft Report to Barr Engineering  

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

UMore Park Wind Turbine Project UMore Park Wind Turbine Project Loggerhead Shrike Survey Draft Report to Barr Engineering Lee A. Pfannmuller June 15, 2010 [1] UMore Park Wind Turbine Project Loggerhead Shrike Survey Report to Barr Engineering Lee A. Pfannmuller June 15, 2010 Project Area The University of Minnesota owns approximately 5,000 acres in Dakota County, known as the University of Minnesota Outreach, Research and Education (UMore) Park. A concept master plan was developed

114

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.

115

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 turbines compressor health. Effects of various gas (more)

Muthukumar, Krishnan.

2008-01-01T23:59:59.000Z

116

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

117

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

118

Causes of Combustion Instabilities with Passive and Active Methods of Control for practical application to Gas Turbine Engines.  

E-Print Network (OSTI)

??Combustion at high pressure in applications such as rocket engines and gas turbine engines commonly experience destructive combustion instabilities. These instabilities results from interactions between (more)

Cornwell, Michael

2011-01-01T23:59:59.000Z

119

FUEL INTERCHANGEABILITY FOR LEAN PREMIXED COMBUSTION IN GAS TURBINE ENGINES  

DOE Green Energy (OSTI)

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

Don Ferguson; Geo. A. Richard; Doug Straub

2008-06-13T23:59:59.000Z

120

Axially staged combustion system for a gas turbine engine  

DOE Patents (OSTI)

An axially staged combustion system is provided for a gas turbine engine comprising a main body structure having a plurality of first and second injectors. First structure provides fuel to at least one of the first injectors. The fuel provided to the one first injector is adapted to mix with air and ignite to produce a flame such that the flame associated with the one first injector defines a flame front having an average length when measured from a reference surface of the main body structure. Each of the second injectors comprising a section extending from the reference surface of the main body structure through the flame front and having a length greater than the average length of the flame front. Second structure provides fuel to at least one of the second injectors. The fuel passes through the one second injector and exits the one second injector at a location axially spaced from the flame front.

Bland, Robert J. (Oviedo, FL)

2009-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Combustor for a low-emissions gas turbine engine  

DOE Patents (OSTI)

Many government entities regulated emission from gas turbine engines including CO. CO production is generally reduced when CO reacts with excess oxygen at elevated temperatures to form CO2. Many manufactures use film cooling of a combustor liner adjacent to a combustion zone to increase durability of the combustion liner. Film cooling quenches reactions of CO with excess oxygen to form CO2. Cooling the combustor liner on a cold side (backside) away from the combustion zone reduces quenching. Furthermore, placing a plurality of concavities on the cold side enhances the cooling of the combustor liner. Concavities result in very little pressure reduction such that air used to cool the combustor liner may also be used in the combustion zone. An expandable combustor housing maintains a predetermined distance between the combustor housing and combustor liner.

Glezer, Boris (Del Mar, CA); Greenwood, Stuart A. (San Diego, CA); Dutta, Partha (San Diego, CA); Moon, Hee-Koo (San Diego, CA)

2000-01-01T23:59:59.000Z

122

Fuel injector for use in a gas turbine engine  

Science Conference Proceedings (OSTI)

A fuel injector in a combustor apparatus of a gas turbine engine. An outer wall of the injector defines an interior volume in which an intermediate wall is disposed. A first gap is formed between the outer wall and the intermediate wall. The intermediate wall defines an internal volume in which an inner wall is disposed. A second gap is formed between the intermediate wall and the inner wall. The second gap receives cooling fluid that cools the injector. The cooling fluid provides convective cooling to the intermediate wall as it flows within the second gap. The cooling fluid also flows through apertures in the intermediate wall into the first gap where it provides impingement cooling to the outer wall and provides convective cooling to the outer wall. The inner wall defines a passageway that delivers fuel into a liner downstream from a main combustion zone.

Wiebe, David J.

2012-10-09T23:59:59.000Z

123

Research turbine supports sustained technology development. For more than three decades, engineers at the National Renewable Energy Labora-  

E-Print Network (OSTI)

Research turbine supports sustained technology development. For more than three decades, engineers, improve wind turbine performance, and reduce the cost of energy. Although there have been dramatic turbine test platform. Working with DOE, NREL purchased and installed a GE 1.5-MW wind turbine at the NWTC

124

Hybrid Vehicle Turbine Engine Technology Support (HVTE-TS) ceramic design manual  

SciTech Connect

This ceramic component design manual was an element of the Advanced Turbine Technology Applications Project (ATTAP). The ATTAP was intended to advance the technological readiness of the ceramic automotive gas turbine engine as a primary power plant. Of the several technologies requiring development before such an engine could become a commercial reality, structural ceramic components represented the greatest technical challenge, and was the prime focus of the program. HVTE-TS, which was created to support the Hybrid Electric Vehicle (HEV) program, continued the efforts begun in ATTAP to develop ceramic components for an automotive gas turbine engine. In HVTE-TS, the program focus was extended to make this technology applicable to the automotive gas turbine engines that form the basis of hybrid automotive propulsion systems consisting of combined batteries, electric drives, and on-board power generators as well as a primary power source. The purpose of the ceramic design manual is to document the process by which ceramic components are designed, analyzed, fabricated, assembled, and tested in a gas turbine engine. Interaction with ceramic component vendors is also emphasized. The main elements of the ceramic design manual are: an overview of design methodology; design process for the AGT-5 ceramic gasifier turbine rotor; and references. Some reference also is made to the design of turbine static structure components to show methods of attaching static hot section ceramic components to supporting metallic structures.

1997-10-01T23:59:59.000Z

125

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

E-Print Network (OSTI)

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

Peck, Jhongwoo, 1976-

2003-01-01T23:59:59.000Z

126

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

E-Print Network (OSTI)

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

Martini, Bastien

2008-01-01T23:59:59.000Z

127

A market and engineering study of a 3-kilowatt class gas turbine generator  

E-Print Network (OSTI)

Market and engineering studies were performed for the world's only commercially available 3 kW class gas turbine generator, the IHI Aerospace Dynajet. The objectives of the market study were to determine the competitive ...

Monroe, Mark A. (Mark Alan)

2003-01-01T23:59:59.000Z

128

The effect of surface finish on piston ring-pack performance in advanced reciprocating engine systems  

E-Print Network (OSTI)

Frictional losses in the piston ring-pack of an engine account for approximately 20% of the total frictional losses within an engine. Methods of surface texture optimization were investigated to reduce piston ring-pack ...

Jocsak, Jeffrey (Jeffrey Alan)

2005-01-01T23:59:59.000Z

129

Hybrid staging of a Lysholm positive displacement engine with two Westinghouse two stage impulse Curtis turbines  

SciTech Connect

The University of California at Berkeley has tested and modeled satisfactorly a hybrid staged Lysholm engine (positive displacement) with a two stage Curtis wheel turbine. The system operates in a stable manner over its operating range (0/1-3/1 water ratio, 120 psia input). Proposals are made for controlling interstage pressure with a partial admission turbine and volume expansion to control mass flow and pressure ratio for the Lysholm engine.

Parker, D.A.

1982-06-01T23:59:59.000Z

130

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

131

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

132

Opportunities and Challenges for Advanced Aero Turbine Engine ...  

Science Conference Proceedings (OSTI)

This presentation highlights some leading edge opportunities for materials in gas turbines, and the challenges that these present to materials developers.

133

Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines  

SciTech Connect

During the second reporting period, the project team focused on identifying promising technologies that can then be used to monitor and control emissions from E&P engines. These technologies include control and monitoring technologies and in most cases can be used to monitor engine performance as well as control and monitor engine emissions. The project team also identified three potential sources to receive a Cooper Ajax engine that is approximately 100 bhp. The goal is to have this engine delivered to the project team by the end of the calendar year 2003. This will then allow the team to prepare the engine for testing at Ricardo in early 2004.

Kirby S. Chapman

2003-12-01T23:59:59.000Z

134

Advanced turbine design for coal-fueled engines  

SciTech Connect

The investigators conclude that: (1) Turbine erosion resistance was shown to be improved by a factor of 5 by varying the turbine design. Increasing the number of stages and increasing the mean radius reduces the peak predicted erosion rates for 2-D flows on the blade airfoil from values which are 6 times those of the vane to values of erosion which are comparable to those of the vane airfoils. (2) Turbine erosion was a strong function of airfoil shape depending on particle diameter. Different airfoil shapes for the same turbine operating condition resulted in a factor of 7 change in airfoil erosion for the smallest particles studied (5 micron). (3) Predicted erosion for the various turbines analyzed was a strong function of particle diameter and weaker function of particle density. (4) Three dimensional secondary flows were shown to cause increases in peak and average erosion on the vane and blade airfoils. Additionally, the interblade secondary flows and stationary outer case caused unique erosion patterns which were not obtainable with 2-D analyses. (5) Analysis of the results indicate that hot gas cleanup systems are necessary to achieve acceptable turbine life in direct-fired, coal-fueled systems. In addition, serious consequences arise when hot gas filter systems fail for even short time periods. For a complete failure of the filter system, a 0.030 in. thick corrosion-resistant protective coating on a turbine blade would be eroded at some locations within eight minutes.

Wagner, J.H.; Johnson, B.V.

1993-04-01T23:59:59.000Z

135

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

DOE Green Energy (OSTI)

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

Cairelli, J.; Horvath, D.

1981-05-01T23:59:59.000Z

136

Department of Mechanical Engineering Fall 2011 Pratt & Whitney Engine Low Pressure Turbine Vane Cluster Analysis  

E-Print Network (OSTI)

Turbine Vane Cluster Analysis Overview The goal was to provide Pratt & Whitney with a detailed finite

Demirel, Melik C.

137

Performance, Efficiency, and Emissions Characterization of Reciprocating Internal Combustion Engines Fueled with Hydrogen/Natural Gas Blends  

Science Conference Proceedings (OSTI)

Hydrogen is an attractive fuel source not only because it is abundant and renewable but also because it produces almost zero regulated emissions. Internal combustion engines fueled by compressed natural gas (CNG) are operated throughout a variety of industries in a number of mobile and stationary applications. While CNG engines offer many advantages over conventional gasoline and diesel combustion engines, CNG engine performance can be substantially improved in the lean operating region. Lean operation has a number of benefits, the most notable of which is reduced emissions. However, the extremely low flame propagation velocities of CNG greatly restrict the lean operating limits of CNG engines. Hydrogen, however, has a high flame speed and a wide operating limit that extends into the lean region. The addition of hydrogen to a CNG engine makes it a viable and economical method to significantly extend the lean operating limit and thereby improve performance and reduce emissions. Drawbacks of hydrogen as a fuel source, however, include lower power density due to a lower heating value per unit volume as compared to CNG, and susceptibility to pre-ignition and engine knock due to wide flammability limits and low minimum ignition energy. Combining hydrogen with CNG, however, overcomes the drawbacks inherent in each fuel type. Objectives of the current study were to evaluate the feasibility of using blends of hydrogen and natural gas as a fuel for conventional natural gas engines. The experiment and data analysis included evaluation of engine performance, efficiency, and emissions along with detailed in-cylinder measurements of key physical parameters. This provided a detailed knowledge base of the impact of using hydrogen/natural gas blends. A four-stroke, 4.2 L, V-6 naturally aspirated natural gas engine coupled to an eddy current dynamometer was used to measure the impact of hydrogen/natural gas blends on performance, thermodynamic efficiency and exhaust gas emissions in a reciprocating four stroke cycle engine. The test matrix varied engine load and air-to-fuel ratio at throttle openings of 50% and 100% at equivalence ratios of 1.00 and 0.90 for hydrogen percentages of 10%, 20% and 30% by volume. In addition, tests were performed at 100% throttle opening, with an equivalence ratio of 0.98 and a hydrogen blend of 20% to further investigate CO emission variations. Data analysis indicated that the use of hydrogen/natural gas fuel blend penalizes the engine operation with a 1.5 to 2.0% decrease in torque, but provided up to a 36% reduction in CO, a 30% reduction in NOX, and a 5% increase in brake thermal efficiency. These results concur with previous results published in the open literature. Further reduction in emissions can be obtained by retarding the ignition timing.

Kirby S. Chapman; Amar Patil

2007-06-30T23:59:59.000Z

138

Integrated Advanced Reciprocating Internal Combustion Engine System for Increased Utilization of Gaseous Opportunity Fuels  

SciTech Connect

The project is addressing barriers to or opportunities for increasing distributed generation (DG)/combined heat and power (CHP) use in industrial applications using renewable/opportunity fuels. This project brings together novel gas quality sensor (GQS) technology with engine management for opportunity fuels such as landfill gas, digester gas and coal bed methane. By providing the capability for near real-time monitoring of the composition of these opportunity fuels, the GQS output can be used to improve the performance, increase efficiency, raise system reliability, and provide improved project economics and reduced emissions for engines used in distributed generation and combined heat and power.

Pratapas, John; Zelepouga, Serguei; Gnatenko, Vitaliy; Saveliev, Alexei; Jangale, Vilas; Li, Hailin; Getz, Timothy; Mather, Daniel

2013-08-31T23:59:59.000Z

139

Biphase turbine bottoming cycle for a diesel engine  

SciTech Connect

Application of a two-phase turbine system to waste heat recovery was examined. Bottoming cycle efficiencies ranging from 15 to 30% were calculated for a 720/sup 0/F diesel exhaust temperature. A single stage demonstration unit, designed for non-toxic fluids (water and DowTherm A) and for atmospheric seals and bearings, had a cycle efficiency of 23%. The net output power was 276 hp at 8,100 rpm, increasing the total shaft power from 1,800 hp for the diesel alone, to 2,076 hp for the combined system. A four stage organic turbine, for the same application, had a rotational speed of 14,700 rpm while a four stage steam turbine had 26,000 rpm. Fabrication drawings were prepared for the turbine and nozzle. The major improvement leading to higher cycle efficiency and lower turbine rpm was found to be the use of a liquid component with lower sensible heat. A reduction in capital cost was found to result from the use of a contact heat exchanger instead of tube-fin construction. The cost for a contact heat exchanger was only $35-52/kWe compared to $98/kWe for a tube-fin heat exchanger. Design drawings and materials list were prepared. A program resulting in the demonstration of a two-phase bottoming system was planned and the required cost estimated. The program would result in a feasibility test of the nozzle and turbine at the end of the first year, a laboratory performance test of the bottoming system by the end of the second year and a field demonstration test and laboratory endurance test of the bottoming system during the third year. The blowdown test rig for the first year's program and test turbine were designed.

Ahmad, S.; Hays, L.

1977-02-15T23:59:59.000Z

140

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

DOE Green Energy (OSTI)

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

Helms, H.E.

1977-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Open loop pneumatic control of a Lysholm engine or turbine exhaust pressure  

DOE Green Energy (OSTI)

A Lysholm engine, or helical screw expander, is currently being evaluated at the University of California, Berkeley for staging with a conventional turbine in geothermal energy conversion. A pneumatic closed loop, proportional-integral control system was implemented to control the Lysholm engine's exhaust pressure for performance testing of the engine at constant inlet/outlet pressure ratios. The control system will also be used to control the exhaust pressure of the conventional turbine during future testing of the staged Lysholm-turbine system. Analytical modeling of the control system was performed and successful tuning was achieved by applying Ziegler-Nichol's tuning method. Stable control and quick response, of approximately 1 minute, was demonstrated for load and set point changes in desired exhaust pressures.

Plonski, B.A.

1981-07-17T23:59:59.000Z

142

Application of Hydrogen Assisted Lean Operation to Natural Gas-Fueled Reciprocating Engines (HALO)  

SciTech Connect

Two key challenges facing Natural Gas Engines used for cogeneration purposes are spark plug life and high NOx emissions. Using Hydrogen Assisted Lean Operation (HALO), these two keys issues are simultaneously addressed. HALO operation, as demonstrated in this project, allows stable engine operation to be achieved at ultra-lean (relative air/fuel ratios of 2) conditions, which virtually eliminates NOx production. NOx values of 10 ppm (0.07 g/bhp-hr NO) for 8% (LHV H2/LHV CH4) supplementation at an exhaust O2 level of 10% were demonstrated, which is a 98% NOx emissions reduction compared to the leanest unsupplemented operating condition. Spark ignition energy reduction (which will increase ignition system life) was carried out at an oxygen level of 9%, leading to a NOx emission level of 28 ppm (0.13 g/bhp-hr NO). The spark ignition energy reduction testing found that spark energy could be reduced 22% (from 151 mJ supplied to the coil) with 13% (LHV H2/LHV CH4) hydrogen supplementation, and even further reduced 27% with 17% hydrogen supplementation, with no reportable effect on NOx emissions for these conditions and with stable engine torque output. Another important result is that the combustion duration was shown to be only a function of hydrogen supplementation, not a function of ignition energy (until the ignitability limit was reached). The next logical step leading from these promising results is to see how much the spark energy reduction translates into increase in spark plug life, which may be accomplished by durability testing.

Chad Smutzer

2006-01-01T23:59:59.000Z

143

Sealing apparatus for airfoils of gas turbine engines  

DOE Patents (OSTI)

An improved airfoil tip sealing apparatus is disclosed wherein brush seals are attached to airfoil tips with the distal ends of the brush seal fibers sealingly contacting opposing wall surfaces. Embodiments for variable vanes, stators and both cooled and uncooled turbine blade applications are disclosed.

Jones, Russell B. (San Diego, CA)

1998-01-01T23:59:59.000Z

144

Sealing apparatus for airfoils of gas turbine engines  

DOE Patents (OSTI)

An improved airfoil tip sealing apparatus is disclosed wherein brush seals are attached to airfoil tips with the distal ends of the brush seal fibers sealingly contacting opposing wall surfaces. Embodiments for variable vanes, stators and both cooled and uncooled turbine blade applications are disclosed. 17 figs.

Jones, R.B.

1998-05-19T23:59:59.000Z

145

INTERNATIONAL UNION OF OPERATING ENGINEERS NATIONAL HAZMAT PROGRAM - DEWALT RECIPROCATING SAW OENHP{number_sign}: 2001-01, VERSION A  

Science Conference Proceedings (OSTI)

Florida International University's (FIU) Hemispheric Center for Environmental Technology (HCET) evaluated five saws for their effectiveness in cutting specially prepared fiberglass-reinforced plywood crates. These crates were built as surrogates for crates that presently hold radioactively contaminated glove boxes at the Department of Energy's (DOE) Los Alamos facility. The DeWalt reciprocating saw was assessed on August 13, 2001. During the FIU test of efficacy, a team from the Operating Engineers National Hazmat Program (OENHP) evaluated the occupational safety and health issues associated with this technology. The DeWalt reciprocating saw is a hand-held industrial tool used for cutting numerous materials, including wood and various types of metals depending upon the chosen blade. Its design allows for cutting close to floors, corners, and other difficult areas. An adjustable shoe sets the cut at three separate depths. During the demonstration for the dismantling of the fiberglass-reinforced plywood crate, the saw was used for extended continuous cutting, over a period of approximately two hours. The dismantling operation involved vertical and horizontal cuts, saw blade changes, and material handling. During this process, operators experienced vibration to the hand and arm in addition to a temperature rise on the handgrip. The blade of the saw is partially exposed during handling and fully exposed during blade changes. Administrative controls, such as duty time of the operators and the machine, operator training, and personal protective equipment (PPE), such as gloves, should be considered when using the saw in this application. Personal noise sampling indicated that both workers were exposed to noise levels exceeding the Occupational Safety and Health Administration's (OSHA) Action Level of 85 decibels (dBA) with time-weighted averages (TWA's) of 88.3 and 90.6 dBA. Normally, a worker would be placed in a hearing conservation program if his TWA was greater than the Action Level. In this case, however, monitoring was conducted during a simulation, not during the actual work conducted at the worksite. Additional sampling should be conducted at the worksite to determine the actual noise levels for the workers. Until it is determined that the actual TWA's are less than the Action Level, the workers should use PPE. A training program on the proper use and wearing of the selected PPE should be provided to each worker. Nuisance dust monitoring yielded a concentration of 10.69 milligrams per cubic meter (mg/m{sup 3}). Although this is less than the OSHA Permissible Exposure Limit (PEL) of 15 mg/m{sup 3}, it is above the American Conference of Governmental Industrial Hygienists' (ACGIH) Threshold Limit Value (TLV) of 10 mg/m{sup 3}. Fiberglass dust monitoring yielded a fiber count of 1.7 fibers per cubic centimeter (f/cc). This is above the PEL and the TLV of 1.0 f/cc. Therefore, controls should be implemented (engineering or PPE) to reduce the workers' exposure to the dust. Respirators should be used if engineering controls do not sufficiently control the dust or fiberglass generated. Respirators should be equipped with an organic vapor and acid gas cartridge with a High Efficiency Particulate Air (HEPA) filter, since during the demonstration, the workers complained of an odd smell, which may have been from the breakdown of the fiberglass.

Unknown

2002-01-31T23:59:59.000Z

146

Hybrid vehicle turbine engine technology support (HVTE-TS) project. 1995--1996 annual report  

DOE Green Energy (OSTI)

This report presents a summary of technical work accomplished on the Hybrid Vehicle Turbine Engine--Technology Support (HVTE-TS) Project during calendar years 1995 and 1996. Work was performed under an initial National Aeronautics and Space Administration (NASA) contract DEN3-336. As of September 1996 the contract administration was transferred to the US Department of Energy (DoE) Chicago Operations Office, and renumbered as DE-AC02-96EE50553. The purpose of the HVTE-TS program is to develop gas turbine engine technology in support of DoE and automotive industry programs exploring the use of gas turbine generator sets in hybrid-electric automotive propulsion systems. The program focus is directed to the development of four key technologies to be applied to advanced turbogenerators for hybrid vehicles: Structural ceramic materials and processes; Low emissions combustion systems; Regenerators and seals systems; and Insulation systems and processes. 60 figs., 9 tabs.

NONE

1996-12-31T23:59:59.000Z

147

Cost-Effective Reciprocating Engine Emissions Control and Monitoring for E&P Field and Gathering Engines  

DOE Green Energy (OSTI)

This final report describes a project intended to identify, develop, test, and commercialize emissions control and monitoring technologies that can be implemented by E&P operators to significantly lower their cost of environmental compliance and expedite project permitting. Technologies were installed and tested in controlled laboratory situations and then installed and tested on field engines based on the recommendations of an industry-based steering committee, analysis of installed horsepower, analysis of available emissions control and monitoring technologies, and review of technology and market gaps. The industry-recognized solution for lean-burn engines, a low-emissions-retrofit including increased airflow and pre-combustion chambers, was found to successfully control engine emissions of oxides of nitrogen (NO{sub X}) and carbon monoxide (CO). However, the standard non-selective catalytic reduction (NSCR) system recognized by the industry was found to be unable to consistently control both NO{sub X} and CO emissions. The standard NSCR system was observed to produce emissions levels that changed dramatically on a day-to-day or even hour-to-hour basis. Because difficulties with this system seemed to be the result of exhaust gas oxygen (EGO) sensors that produced identical output for very different exhaust gas conditions, models were developed to describe the behavior of the EGO sensor and an alternative, the universal exhaust gas oxygen (UEGO) sensor. Meanwhile, an integrated NSCR system using an advanced, signal-conditioned UEGO sensor was tested and found to control both NO{sub X} and CO emissions. In conjunction with this project, advanced monitoring technologies, such as Ion Sense, and improved sensors for emissions control, such as the AFM1000+ have been developed and commercialized.

Keith Hohn; Sarah R. Nuss-Warren

2011-08-31T23:59:59.000Z

148

Production of Diesel Engine Turbocharger Turbine from Low Cost Titanium Powder  

DOE Green Energy (OSTI)

Turbochargers in commercial turbo-diesel engines are multi-material systems where usually the compressor rotor is made of aluminum or titanium based material and the turbine rotor is made of either a nickel based superalloy or titanium, designed to operate under the harsh exhaust gas conditions. The use of cast titanium in the turbine section has been used by Cummins Turbo Technologies since 1997. Having the benefit of a lower mass than the superalloy based turbines; higher turbine speeds in a more compact design can be achieved with titanium. In an effort to improve the cost model, and develop an industrial supply of titanium componentry that is more stable than the traditional aerospace based supply chain, the Contractor has developed component manufacturing schemes that use economical Armstrong titanium and titanium alloy powders and MgR-HDH powders. Those manufacturing schemes can be applied to compressor and turbine rotor components for diesel engine applications with the potential of providing a reliable supply of titanium componentry with a cost and performance advantage over cast titanium.

Muth, T. R.; Mayer, R. (Queen City Forging)

2012-05-04T23:59:59.000Z

149

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

150

Multiple piece turbine engine airfoil with a structural spar  

DOE Patents (OSTI)

A multiple piece turbine airfoil having an outer shell with an airfoil tip that is attached to a root with an internal structural spar is disclosed. The root may be formed from first and second sections that include an internal cavity configured to receive and secure the one or more components forming the generally elongated airfoil. The internal structural spar may be attached to an airfoil tip and place the generally elongated airfoil in compression. The configuration enables each component to be formed from different materials to reduce the cost of the materials and to optimize the choice of material for each component.

Vance, Steven J. (Orlando, FL)

2011-10-11T23:59:59.000Z

151

UNIVERSITY TURBINE SYSTEMS RESEARCH-HIGH EFFICIENCY ENGINES AND TURBINES (UTSR-HEET)  

Science Conference Proceedings (OSTI)

In 2002, the U S Department of Energy established a cooperative agreement for a program now designated as the University Turbine Systems (UTSR) Program. As stated in the cooperative agreement, the objective of the program is to support and facilitate development of advanced energy systems incorporating turbines through a university research environment. This document is the first annual, technical progress report for the UTSR Program. The Executive Summary describes activities for the year of the South Carolina Institute for Energy Studies (SCIES), which administers the UTSR Program. Included are descriptions of: Outline of program administrative activities; Award of the first 10 university research projects resulting from a year 2001 RFP; Year 2002 solicitation and proposal selection for awards in 2003; Three UTSR Workshops in Combustion, Aero/Heat Transfer, and Materials; SCIES participation in workshops and meetings to provide input on technical direction for the DOE HEET Program; Eight Industrial Internships awarded to higher level university students; Increased membership of Performing Member Universities to 105 institutions in 40 states; Summary of outreach activities; and a Summary table describing the ten newly awarded UTSR research projects. Attachment A gives more detail on SCIES activities by providing the monthly exceptions reports sent to the DOE during the year. Attachment B provides additional information on outreach activities for 2002. The remainder of this report describes in detail the technical approach, results, and conclusions to date for the UTSR university projects.

Lawrence P. Golan; Richard A. Wenglarz; William H. Day

2003-03-01T23:59:59.000Z

152

Next Generation Engineered Materials for Ultra Supercritical Steam Turbines  

SciTech Connect

To reduce the effect of global warming on our climate, the levels of CO{sub 2} emissions should be reduced. One way to do this is to increase the efficiency of electricity production from fossil fuels. This will in turn reduce the amount of CO{sub 2} emissions for a given power output. Using US practice for efficiency calculations, then a move from a typical US plant running at 37% efficiency to a 760 C /38.5 MPa (1400 F/5580 psi) plant running at 48% efficiency would reduce CO2 emissions by 170kg/MW.hr or 25%. This report presents a literature review and roadmap for the materials development required to produce a 760 C (1400 F) / 38.5MPa (5580 psi) steam turbine without use of cooling steam to reduce the material temperature. The report reviews the materials solutions available for operation in components exposed to temperatures in the range of 600 to 760 C, i.e. above the current range of operating conditions for today's turbines. A roadmap of the timescale and approximate cost for carrying out the required development is also included. The nano-structured austenitic alloy CF8C+ was investigated during the program, and the mechanical behavior of this alloy is presented and discussed as an illustration of the potential benefits available from nano-control of the material structure.

Douglas Arrell

2006-05-31T23:59:59.000Z

153

Turbine arrangement  

SciTech Connect

A turbine arrangement is disclosed for a gas turbine engine having a sloped gas flowpath through the turbine. The radial axes of the rotor blades and stator vanes in the sloped flowpath are tilted such that the axes are substantially normal to the mean flow streamline of the gases. This arrangement reduces tip losses and thereby increases engine efficiency.

Johnston, R.P.

1984-02-28T23:59:59.000Z

154

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

155

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 Lpez; M. Gmez Gonzlez; N. Ruiz Reyes; F. Jurado

2007-06-01T23:59:59.000Z

156

Analysis and synthesis of logical-dynamic systems of automatic control of a gas-turbine engine  

Science Conference Proceedings (OSTI)

Specific features of analysis and synthesis of logical-dynamic automatic control systems with algebraic selectors for gas-turbine engines are considered. Equivalent nonlinear structures of these systems are obtained. Methods for providing stability, ...

V. I. Petunin; A. I. Frid

2012-11-01T23:59:59.000Z

157

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

Science Conference Proceedings (OSTI)

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

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

2004-06-01T23:59:59.000Z

158

Reciprocity Checklist  

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

CHECKLIST OF PERMITTED EXCElTIONS TO RECIPROCITY CHECKLIST OF PERMITTED EXCElTIONS TO RECIPROCITY (to be used whenever you make an eligibility determination for access to classified information for an individual who has a current access eligibility based upon the requisite investigation (i.e. ANACI, NACLC, SSBI, or SSBI-PR) For the purpose of determining eligibility for access to classified information, to include highly sensitive programs (i.e. SCI, SAPS and Q), as the gaining activityJprogram for an individual who has current access eligibility with another Federal agency or program: you cannot request the individual to complete a new security questionnaire; you cannot review existing background investigations for the individual; you cannot review existing security questionnaires for the individual;

159

Materials review for improved automotive gas-turbine engine. Final report  

DOE Green Energy (OSTI)

Advanced materials are the key to achieving the performance and fuel economy goals of improved automotive gas turbine engines. The potential role of superalloys, refractory alloys, and ceramics in the hottest sections of future engines that may be required to operate with turbine inlet temperatures as high as 1370/sup 0/C (2500/sup 0/F) is examined. These high temperature materials are reviewed. The characteristics of the best modern conventional superalloys, directionally solidified eutectics, oxide dispersion strengthened alloys, and tungsten fiber reinforced superalloys are reviewed; and the most promising alloys in each system are compared on the basis of maximum turbine blade temperature capability. The requirements for improved high temperature protective coatings and special fabrication techniques for these advanced alloys are discussed. Chromium, columbium, molybdenum, tantalum, and tungsten alloys are reviewed. On the basis of properties, cost, availability, and strategic importance, molybdenum alloys are found to be the most suitable refractory material for turbine wheels for mass produced engines. Ceramic material candidates are reviewed and ranked according to their probability of success in particular applications. Various forms of, and fabrication processes for both silicon nitride and silicon carbide, along with SiAlON's are investigated for use in high-stress and medium-stress high temperature environments. Low-stress glass-ceramic regenerator materials are also investigated. Treatment is given to processing requirements, such as coatings for oxidation/corrosion protection, joining methods, and machining technology. Economics of ceramic raw materials, and of various processing methods are discussed. Conclusions are drawn, and recommendations for areas of further research are proposed for consideration and/or adoption.

Belleau, C.; Ehlers, W.L.; Hagen, F.A.

1978-04-01T23:59:59.000Z

160

Aero engine test experience with CMSX-4{reg_sign} alloy single-crystal turbine blades  

SciTech Connect

A team approach involving a turbine engine company (Rolls-Royce), its single-crystal casting facilities, and a superalloy developer and ingot manufacturer (Cannon-Muskegon), utilizing the concepts of simultaneous engineering, has been used to develop CMSX-4 alloy successfully for turbine blade applications. CMSX-4 alloy is a second-generation nickel-base single-crystal superalloy containing 3 percent (wt) rhenium (Re) and 70 percent volume fraction of the coherent {gamma}{prime} precipitate strengthening phase. The paper details the single-crystal casting process and heat treatment manufacturing development for turbine blades in CMSX-4 alloy. Competitive single-crystal casting yields are being achieved in production and extensive vacuum heat treatment experience confirms CMSX-4 alloy to have a practical production solution heat treat/homogenization ``window.`` The creep-rupture data-base on CMSX-4 alloy now includes 325 data points from 17 heats including 3,630 kg (8,000 lb) production size heats. An appreciable portion of this data was machined-from-blade (MFB) properties, which indicate turbine blade component capabilities based on single-crystal casting process, component configuration, and heat treatment. The use of hot isostatic pressing (HIP) has been shown to eliminate single-crystal casting micropores, which along with the essential absence of {gamma}/{gamma}{prime} eutectic phase, carbides, stable oxide, nitride and sulfide inclusions, results in remarkably high mechanical fatigue properties, with smooth and particularly notched specimens. The Re addition has been shown not only to benefit creep and mechanical fatigue strength, but also bare oxidation, hot corrosion, and coating performance. The high level of balanced properties determined by extensive laboratory evaluation has been confirmed during engine testing of the Rolls-Royce Pegasus turbofan.

Fullagar, K.P.L.; Broomfield, R.W.; Hulands, M. [Rolls-Royce PLC, Derby (United Kingdom). Aerospace Group; Harris, K.; Erickson, G.L.; Sikkenga, S.L. [Cannon-Muskegon Corp., Muskegon, MI (United States). SPS Technologies

1996-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Advanced turbine design for coal-fueled engines. Quarterly technical report, [July 1, 1989--September 30, 1989  

SciTech Connect

Coal-fueled gas turbines require the development of a number of new technologies which are being identified by METC and its Heat Engines Contractors. Three significant problems, that were Identified early in the development of coal-fueled engines, are the rapid wear of the turbine airfoils due to particulate erosion, the accumulation of deposits on portions of the airfoil surfaces due to slag deposition and the rapid corrosion of airfoils after the breakdown of surface coatings. The technology development study contained in this program is focused on improving the durability of the turbine through the development of erosion and deposition resistant airfoils and turbine operating conditions. The baseline turbine meanline design vas modified to prevent a local shock on the suction side of the rotor airfoil. New particle dimensionless parameters to be varied were determined. Three first-stage turbine meanline designs have been completed. The design of nev turbine airfoil shapes has been initiated. The calculation of particle trajectories has been completed for the baseline turbine vane and blade airfoils. The erosion model described in the previous technical report vas incorporated in the Post Processing Trajectory Analysis Code.

1989-12-31T23:59:59.000Z

162

Low Wind Speed Technology Phase I: Evaluation of Design and Construction Approaches for Economical Hybrid Steel/Concrete Wind Turbine Towers; BERGER/ABAM Engineers Inc.  

DOE Green Energy (OSTI)

This fact sheet describes a subcontract with BERGER/ABAM Engineers Inc. to study the economic feasibility of concrete and hybrid concrete/steel wind turbine towers.

Not Available

2006-03-01T23:59:59.000Z

163

Apparatus and filtering systems relating to combustors in combustion turbine engines  

DOE Patents (OSTI)

A combustor for a combustion turbine engine, the combustor that includes: a chamber defined by an outer wall and forming a channel between windows defined through the outer wall toward a forward end of the chamber and at least one fuel injector positioned toward an aft end of the chamber; a screen; and a standoff comprising a raised area on an outer surface of the outer wall near the periphery of the windows; wherein the screen extends over the windows and is supported by the standoff in a raised position in relation to the outer surface of the outer wall and the windows.

Johnson, Thomas Edward (Greer, SC); Zuo, Baifang (Simpsonville, SC); Stevenson, Christian Xavier (Inman, SC)

2012-07-24T23:59:59.000Z

164

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

165

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

166

ODC/EPA 17 elimination from DOD technical data and gas turbine engines  

SciTech Connect

In response to the 1990 Clean Air Act Amendments, DOD and USAF policy, the Environment Systems Division of the Human Systems Program Office, Human Systems Center, Brooks AFB TX has developed a program to systematically eliminate references to particularly active Class I Ozone Depleting Chemicals (ODC) from gas turbine engine technical data. Additionally, Executive Order 12856 and subsequent DOD directives drive the reduction in volume usage of Environmental Protection Agency (EPA) 17 toxins. Program scope includes the validation of requirements for usage, examination of commercially available alternatives, identification of solutions implemented by manufacturers, and qualification of potential alternatives where necessary. Technical and management approaches are discussed. In response to the 1990 Clean Air Act Amendments, DOD and USAF policy, the Environment Systems Division of the Human Systems Program Office, Human Systems Center, Brooks AFB TX has developed a program to systematically eliminate references to particularly active Class I Ozone Depleting Chemicals (ODC) from gas turbine engine technical data. Additionally, Executive Order 12856 and subsequent DOD directives drive the reduction in volume usage of Environmental Protection Agency (EPA) 17 toxins. Program scope includes the validation of requirements for usage, examination of commercially available alternatives, identification of solutions implemented by manufacturers, and qualification of potential alternatives where necessary. Technical and management approaches are discussed.

Manty, B.A.; McCall, M.P.; DeGarmo, L.A.

1995-08-01T23:59:59.000Z

167

Advanced turbine design for coal-fueled engines. Phase 1, Erosion of turbine hot gas path blading: Final report  

SciTech Connect

The investigators conclude that: (1) Turbine erosion resistance was shown to be improved by a factor of 5 by varying the turbine design. Increasing the number of stages and increasing the mean radius reduces the peak predicted erosion rates for 2-D flows on the blade airfoil from values which are 6 times those of the vane to values of erosion which are comparable to those of the vane airfoils. (2) Turbine erosion was a strong function of airfoil shape depending on particle diameter. Different airfoil shapes for the same turbine operating condition resulted in a factor of 7 change in airfoil erosion for the smallest particles studied (5 micron). (3) Predicted erosion for the various turbines analyzed was a strong function of particle diameter and weaker function of particle density. (4) Three dimensional secondary flows were shown to cause increases in peak and average erosion on the vane and blade airfoils. Additionally, the interblade secondary flows and stationary outer case caused unique erosion patterns which were not obtainable with 2-D analyses. (5) Analysis of the results indicate that hot gas cleanup systems are necessary to achieve acceptable turbine life in direct-fired, coal-fueled systems. In addition, serious consequences arise when hot gas filter systems fail for even short time periods. For a complete failure of the filter system, a 0.030 in. thick corrosion-resistant protective coating on a turbine blade would be eroded at some locations within eight minutes.

Wagner, J.H.; Johnson, B.V.

1993-04-01T23:59:59.000Z

168

Advanced turbine design for coal-fueled engines. Topical report, Task 1.6, Task 1.7  

DOE Green Energy (OSTI)

The objective of this task is to perform a technical assessment of turbine blading for advanced second generation PFBC conditions, identify specific problems/issues, and recommend an approach for solving any problems identified. A literature search was conducted, problems associated with hot corrosion defined and limited experiments performed. Sulfidation corrosion occurs in industrial, marine and aircraft gas turbine engines and is due to the presence of condensed alkali (sodium) sulfates. The principle source of the alkali in industrial, marine and aircraft gas turbine engines is sea salt crystals. The principle source of the sulfur is not the liquid fuels, but the same ocean born crystals. Moreover deposition of the corrosive salt occurs primarily by a non-equilibrium process. Sodium will be present in the cleaned combusted gases that enter the PFBC turbine. Although equilibrium condensation is not favored, deposition via impaction is probable. Marine gas turbines operate in sodium chloride rich environments without experiencing the accelerated attack noted in coal fired boilers where condensed chlorides contact metallic surfaces. The sulfates of calcium and magnesium are the products of the reactions used to control sulfur. Based upon industrial gas turbine experience and laboratory tests, calcium and magnesium sulfates are, at temperatures up to 1500{degrees}F (815{degrees}C), relatively innocuous salts. In this study it is found that at 1650{degrees}F (900{degrees}C) and above, calcium sulfate becomes an aggressive corrodent.

Bornstein, N.S.

1992-07-17T23:59:59.000Z

169

Gas turbine engine adapted for use in combination with an apparatus for separating a portion of oxygen from compressed air  

SciTech Connect

A gas turbine engine is provided comprising an outer shell, a compressor assembly, at least one combustor assembly, a turbine assembly and duct structure. The outer shell includes a compressor section, a combustor section, an intermediate section and a turbine section. The intermediate section includes at least one first opening and at least one second opening. The compressor assembly is located in the compressor section to define with the compressor section a compressor apparatus to compress air. The at least one combustor assembly is coupled to the combustor section to define with the combustor section a combustor apparatus. The turbine assembly is located in the turbine section to define with the turbine section a turbine apparatus. The duct structure is coupled to the intermediate section to receive at least a portion of the compressed air from the compressor apparatus through the at least one first opening in the intermediate section, pass the compressed air to an apparatus for separating a portion of oxygen from the compressed air to produced vitiated compressed air and return the vitiated compressed air to the intermediate section via the at least one second opening in the intermediate section.

Bland, Robert J. (Oviedo, FL); Horazak, Dennis A. (Orlando, FL)

2012-03-06T23:59:59.000Z

170

Lubricated Reciprocating Frictional Properties of Marine Cylinder ...  

Science Conference Proceedings (OSTI)

... Process Design of the Ductile Cast Iron Cylinder Head for Marine Diesel Engine ... Heavy Section Ductile Iron Castings for Use in Wind Turbine Generators.

171

Engineering a 70-percent efficient, indirect-fired fuel-cell bottomed turbine cycle  

SciTech Connect

The authors introduce the natural gas, indirect-fired fuel-cell bottomed turbine cycle (NG-IFFC) as a novel power plant system for the distributed power and on-site markets in the 20 to 200 megawatt (MW) size range. The NG-IFFC system is a new METC-patented system. This power-plant system links the ambient pressure, carbonate fuel cell in tandem with a gas turbine, air compressor, combustor, and ceramic heat exchanger. Performance calculations based on Advanced System for Process Engineering (ASPEN) simulations show material and energy balances with expected power output. Early results indicated efficiencies and heat rates for the NG-IFFC are comparable to conventionally bottomed, carbonate fuel-cell steam-bottomed cycles. More recent calculations extended the in-tandem concept to produce near-stoichiometric usage of the oxygen. This is made possible by reforming the anode stream to completion and using all hydrogen fuel in what will need to be a special combustor. The performance increases dramatically to 70%.

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

1996-08-01T23:59:59.000Z

172

LED-induced fluorescence diagnostics for turbine and combustion engine thermometry  

DOE Green Energy (OSTI)

Fluorescence from phosphor coatings is the basis of an established technique for measuring temperature in a wide variety of turbine and combustion engine applications. Example surfaces include blades, vanes, combustors, intake valves, pistons, and rotors. Many situations that are remote and noncontact require the high intensity of a laser to illuminate the phosphor, especially if the surface is moving. Thermometric resolutions of 0.1 C are obtainable, and some laboratory versions of these systems have been calibrated against NIST standards to even higher precision. To improve the measurement signal-to-noise ratio, synchronous detection timing has been used to repeatedly interrogate the same blade in a high speed rotating turbine. High spatial resolution can be obtained by tightly focusing the interrogation beam in measurements of static surfaces, and by precise differential timing of the laser pulses on rotating surfaces. We report here the use of blue light emitting diodes (LEDs) as a n illumination source for producing useable fluorescence from phosphors for temperature measurements. An LED can excite most of the same phosphors used to cover the temperature range from 8 to 1400 C. The advantages of using LEDs are obvious in terms of size, power requirements, space requirements and cost. There can also be advantages associated with very long operating lifetimes, wide range of available colors, and their broader emission bandwidths as compared to laser diodes. Temperature may be inferred either from phase or time-decay determinations.

Allison, S.W.

2001-08-17T23:59:59.000Z

173

Combustor assembly for use in a turbine engine and methods of assembling same  

SciTech Connect

A fuel nozzle assembly for use with a turbine engine is described herein. The fuel nozzle assembly includes a plurality of fuel nozzles positioned within an air plenum defined by a casing. Each of the plurality of fuel nozzles is coupled to a combustion liner defining a combustion chamber. Each of the plurality of fuel nozzles includes a housing that includes an inner surface that defines a cooling fluid plenum and a fuel plenum therein, and a plurality of mixing tubes extending through the housing. Each of the mixing tubes includes an inner surface defining a flow channel extending between the air plenum and the combustion chamber. At least one mixing tube of the plurality of mixing tubes including at least one cooling fluid aperture for channeling a flow of cooling fluid from the cooling fluid plenum to the flow channel.

Uhm, Jong Ho; Johnson, Thomas Edward

2013-05-14T23:59:59.000Z

174

Turbines produce energy from L. A. landfill  

Science Conference Proceedings (OSTI)

This article describes one of the Nation's most sophisticated resource recovery projects which began operating in February at the Puente Hills Landfill Methane Energy Station as part of the County Sanitation Districts of Los Angeles County. The project is currently generating 2.8 megawatts of power which would serve the electrical needs of approximately 5600 homes. Future plans for the landfill energy project include generating enough electricity for more than 50,000 homes. Unlike other methane recovery projects that use diesel or gasoline power reciprocating engines, the Puente Hills Landfill Methane Energy Station drives its electrical generators with gas turbines. This is a first for power generation at a landfill site.

Carry, C.W.; Stahl, J.F.; Maguin, S.R.; Friess, P.L.

1984-06-01T23:59:59.000Z

175

Impact of Fuel Interchangeability on dynamic Instabilities in Gas Turbine Engines  

SciTech Connect

Modern, low NOx emitting gas turbines typically utilize lean pre-mixed (LPM) combustion as a means of achieving target emissions goals. As stable combustion in LPM systems is somewhat intolerant to changes in operating conditions, precise engine tuning on a prescribed range of fuel properties is commonly performed to avoid dynamic instabilities. This has raised concerns regarding the use of imported liquefied natural gas (LNG) and natural gas liquids (NGLs) to offset a reduction in the domestic natural gas supply, which when introduced into the pipeline could alter the fuel BTU content and subsequently exacerbate problems such as combustion instabilities. The intent of this study is to investigate the sensitivity of dynamically unstable test rigs to changes in fuel composition and heat content. Fuel Wobbe number was controlled by blending methane and natural gas with various amounts of ethane, propane and nitrogen. Changes in combustion instabilities were observed, in both atmospheric and pressurized test rigs, for fuels containing high concentrations of propane (> 62% by vol). However, pressure oscillations measured while operating on typical LNG like fuels did not appear to deviate significantly from natural gas and methane flame responses. Mechanisms thought to produce changes in the dynamic response are discussed.

Ferguson, D.H.; Straub, D.L.; Richards, G.A.; Robey, E.H.

2007-03-01T23:59:59.000Z

176

Apparatus and filtering systems relating to combustors in combustion turbine engines  

DOE Patents (OSTI)

A combustor for a combustion turbine engine that includes: a chamber defined by an outer wall and forming a channel between windows defined through the outer wall toward a forward end of the chamber and at least one fuel injector positioned toward an aft end of the chamber; and a multilayer screen filter comprising at least two layers of screen over at least a portion of the windows and at least one layer of screen over the remaining portion of the windows. The windows include a forward end and a forward portion, and an aft end and an aft portion. The multilayer screen filter is positioned over the windows such that, in operation, a supply of compressed air entering the chamber through the windows passes through at least one layer of screen. The multilayer screen filter is configured such that the aft portion of the windows include at least two layers of screen, and the forward portion of the windows includes one less layer of screen than the aft portion of the windows.

Johnson, Thomas Edward (Greer, SC); Zuo, Baifang (Simpsonville, SC); Stevenson, Christian Xavier (Inman, SC)

2012-03-27T23:59:59.000Z

177

" "," ",,," Steam Turbines Supplied by Either Conventional or Fluidized Bed Boilers",,,"Conventional Combusion Turbines with Heat Recovery",,,"Combined-Cycle Combusion Turbines",,,"Internal Combusion Engines with Heat Recovery",,," Steam Turbines Supplied by Heat Recovered from High-Temperature Processes",,,," "  

U.S. Energy Information Administration (EIA) Indexed Site

3 Relative Standard Errors for Table 8.3;" 3 Relative Standard Errors for Table 8.3;" " Unit: Percents." " "," ",,," Steam Turbines Supplied by Either Conventional or Fluidized Bed Boilers",,,"Conventional Combusion Turbines with Heat Recovery",,,"Combined-Cycle Combusion Turbines",,,"Internal Combusion Engines with Heat Recovery",,," Steam Turbines Supplied by Heat Recovered from High-Temperature Processes",,,," " " "," " ," " "NAICS Code(a)","Subsector and Industry","Establishments(b)","Establishments with Any Cogeneration Technology in Use(c)","In Use(d)","Not in Use","Don't Know","In Use(d)","Not in Use","Don't Know","In Use(d)","Not in Use","Don't Know","In Use(d)","Not in Use","Don't Know","In Use(d)","Not in Use","Don't Know"

178

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

179

New Structural-Dynamics Module for Offshore Multimember Substructures within the Wind Turbine Computer-Aided Engineering Tool FAST: Preprint  

DOE Green Energy (OSTI)

FAST, developed by the National Renewable Energy Laboratory (NREL), is a computer-aided engineering (CAE) tool for aero-hydro-servo-elastic analysis of land-based and offshore wind turbines. This paper discusses recent upgrades made to FAST to enable loads simulations of offshore wind turbines with fixed-bottom, multimember support structures (e.g., jackets and tripods, which are commonly used in transitional-depth waters). The main theory and strategies for the implementation of the multimember substructure dynamics module (SubDyn) within the new FAST modularization framework are introduced. SubDyn relies on two main engineering schematizations: 1) a linear frame finite-element beam (LFEB) model and 2) a dynamics system reduction via Craig-Bampton's method. A jacket support structure and an offshore system consisting of a turbine atop a jacket substructure were simulated to test the SubDyn module and to preliminarily assess results against results from a commercial finite-element code.

Song, H.; Damiani, R.; Robertson, A.; Jonkman, J.

2013-08-01T23:59:59.000Z

180

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

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Turbine blade tip gap reduction system  

DOE Patents (OSTI)

A turbine blade sealing system for reducing a gap between a tip of a turbine blade and a stationary shroud of a turbine engine. The sealing system includes a plurality of flexible seal strips extending from a pressure side of a turbine blade generally orthogonal to the turbine blade. During operation of the turbine engine, the flexible seal strips flex radially outward extending towards the stationary shroud of the turbine engine, thereby reducing the leakage of air past the turbine blades and increasing the efficiency of the turbine engine.

Diakunchak, Ihor S.

2012-09-11T23:59:59.000Z

182

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

183

Two phase exhaust for internal combustion engine  

Science Conference Proceedings (OSTI)

An internal combustion engine having a reciprocating multi cylinder internal combustion engine with multiple valves. At least a pair of exhaust valves are provided and each supply a separate power extraction device. The first exhaust valves connect to a power turbine used to provide additional power to the engine either mechanically or electrically. The flow path from these exhaust valves is smaller in area and volume than a second flow path which is used to deliver products of combustion to a turbocharger turbine. The timing of the exhaust valve events is controlled to produce a higher grade of energy to the power turbine and enhance the ability to extract power from the combustion process.

Vuk, Carl T. (Denver, IA)

2011-11-29T23:59:59.000Z

184

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...

185

Rampressor Turbine Design  

DOE Green Energy (OSTI)

The design of a unique gas turbine engine is presented. The first Rampressor Turbine engine rig will be a configuration where the Rampressor rotor is integrated into an existing industrial gas turbine engine. The Rampressor rotor compresses air which is burned in a traditional stationary combustion system in order to increase the enthalpy of the compressed air. The combustion products are then expanded through a conventional gas turbine which provides both compressor and electrical power. This in turn produces shaft torque, which drives a generator to provide electricity. The design and the associated design process of such an engine are discussed in this report.

Ramgen Power Systems

2003-09-30T23:59:59.000Z

186

Turbine Overspeed Trip Modernization  

Science Conference Proceedings (OSTI)

This report provides guidance for power plant engineers contemplating modernization of their main turbine overspeed trip systems. When a large power plant turbine suddenly loses its output shaft loading due to a generator or power grid problem, the steam flow driving the turbine must be cut off very quickly to prevent an overspeed event. The overspeed trip system protects personnel and plant systems by preventing missiles that can result when turbines disintegrate at higher than normal rotational speeds....

2006-12-04T23:59:59.000Z

187

Design and performance of a gas-turbine engine from an automobile turbocharger  

E-Print Network (OSTI)

The Massachusetts Institute of Technology Department of Mechanical Engineering teaches thermodynamics and fluid mechanics through a pair of classes, Thermal Fluids Engineering I & II. The purpose of this project was to ...

Tsai, Lauren (Lauren Elizabeth)

2004-01-01T23:59:59.000Z

188

Design, fabrication, and performance of a gas-turbine engine from an automobile turbocharger  

E-Print Network (OSTI)

Thermal-Fluids Engineering is taught in two semesters in the Department of Mechanical Engineering at the Massachusetts Institute of Technology. To emphasize the course material, running experiments of thermodynamic plants ...

Padilla, Jorge, 1983-

2005-01-01T23:59:59.000Z

189

Plant Support Engineering: Feedwater Pump Turbine Mechanical Hydraulic Controls End-of-Life Report  

Science Conference Proceedings (OSTI)

Mechanical hydraulic controls (MHCs) in nuclear plant feedwater pump turbines (FPTs) are a high contributor to plant capacity derates. The purpose of this study was to evaluate MHCs' degradation over time and life-limiting properties in order to provide guidance about their expected life span and the point at which major refurbishment or replacement should be considered. Insights from this study should provide readers with life-cycle guidance that helps in the management of their facilities' long-term op...

2010-12-13T23:59:59.000Z

190

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

191

Turbine disc sealing assembly  

SciTech Connect

A disc seal assembly for use in a turbine engine. The disc seal assembly includes a plurality of outwardly extending sealing flange members that define a plurality of fluid pockets. The sealing flange members define a labyrinth flow path therebetween to limit leakage between a hot gas path and a disc cavity in the turbine engine.

Diakunchak, Ihor S.

2013-03-05T23:59:59.000Z

192

Proceedings of the joint contractors meeting: FE/EE Advanced Turbine Systems conference FE fuel cells and coal-fired heat engines conference  

SciTech Connect

The joint contractors meeting: FE/EE Advanced Turbine Systems conference FEE fuel cells and coal-fired heat engines conference; was sponsored by the US Department of Energy Office of Fossil Energy and held at the Morgantown Energy Technology Center, P.O. Box 880, Morgantown, West Virginia 26507-0880, August 3--5, 1993. Individual papers have been entered separately.

Geiling, D.W. [ed.

1993-08-01T23:59:59.000Z

193

Thermal analysis of a piston cooling system with reciprocating heat pipes  

SciTech Connect

The reciprocating heat pipe is a very promising technology in engine piston cooling, especially for heavy-duty diesel engines. The concept of the reciprocating heat pipe is verified through the experimental observation of a transparent heat pipe and by thermal testing of a copper/water reciprocating heat pipe. A comparative thermal analysis on the reciprocating heat pipe and gallery cooling systems is performed. The approximate analytical results show that the piston ring groove temperature can be significantly reduced using heat pipe cooling technology, which could contribute to an increase in engine thermal efficiency and a reduction in environmental pollution.

Cao, Y.; Wang, Q. [Florida International Univ., Miami, FL (United States). Dept. of Mechanical Engineering

1995-04-01T23:59:59.000Z

194

Turbine-Generator Topics for Power Plant Engineers: Synchronous Generator Voltage Regulator Basics  

Science Conference Proceedings (OSTI)

This material is intended for the new engineer, the control room operator, management, or the non-engineer. The basics of a synchronous generator excitation system; the fundamentals of the voltage regulator; and its controls and functions are discussed. The typical exciter types are covered, but not in detail. There is also basic information on voltage regulator maintenance issues. Put simply, the excitation system is made up of three basic component systems. The voltage regulator monitors the synchronou...

2012-02-16T23:59:59.000Z

195

Mechanical engineering Department Seminar  

E-Print Network (OSTI)

power generation gas turbines and jet engines. As the energy efficiency of gas turbines in- creases to pro- vide thermal protection to turbine blades and vanes in the hottest sections of both electric with turbine inlet turbine, advances in turbine efficiency depend on improved ther- mal barrier coatings

196

Lean-Burn Stationary Natural Gas Reciprocating Engine Operation with a Prototype Miniature Diode Side Pumped Passively Q-switched Laser Spark Plug  

DOE Green Energy (OSTI)

To meet the ignition system needs of large bore lean burn stationary natural gas engines a laser diode side pumped passively Q-switched laser igniter was developed and used to ignite lean mixtures in a single cylinder research engine. The laser design was produced from previous work. The in-cylinder conditions and exhaust emissions produced by the miniaturized laser were compared to that produced by a laboratory scale commercial laser system used in prior engine testing. The miniaturized laser design as well as the combustion and emissions data for both laser systems was compared and discussed. It was determined that the two laser systems produced virtually identical combustion and emissions data.

McIntyre, D.L.; Woodruff, S.D.; McMillian, M.H.; Richardson, S.W.; Gautam, Mridul

2008-04-01T23:59:59.000Z

197

Lean NOx Trap Catalysis for Lean Natural Gas Engine Applications  

DOE Green Energy (OSTI)

Distributed energy is an approach for meeting energy needs that has several advantages. Distributed energy improves energy security during natural disasters or terrorist actions, improves transmission grid reliability by reducing grid load, and enhances power quality through voltage support and reactive power. In addition, distributed energy can be efficient since transmission losses are minimized. One prime mover for distributed energy is the natural gas reciprocating engine generator set. Natural gas reciprocating engines are flexible and scalable solutions for many distributed energy needs. The engines can be run continuously or occasionally as peak demand requires, and their operation and maintenance is straightforward. Furthermore, system efficiencies can be maximized when natural gas reciprocating engines are combined with thermal energy recovery for cooling, heating, and power applications. Expansion of natural gas reciprocating engines for distributed energy is dependent on several factors, but two prominent factors are efficiency and emissions. Efficiencies must be high enough to enable low operating costs, and emissions must be low enough to permit significant operation hours, especially in non-attainment areas where emissions are stringently regulated. To address these issues the U.S. Department of Energy and the California Energy Commission launched research and development programs called Advanced Reciprocating Engine Systems (ARES) and Advanced Reciprocating Internal Combustion Engines (ARICE), respectively. Fuel efficiency and low emissions are two primary goals of these programs. The work presented here was funded by the ARES program and, thus, addresses the ARES 2010 goals of 50% thermal efficiency (fuel efficiency) and <0.1 g/bhp-hr emissions of oxides of nitrogen (NOx). A summary of the goals for the ARES program is given in Table 1-1. ARICE 2007 goals are 45% thermal efficiency and <0.015 g/bhp-hr NOx. Several approaches for improving the efficiency and emissions of natural gas reciprocating engines are being pursued. Approaches include: stoichiometric engine operation with exhaust gas recirculation and three-way catalysis, advanced combustion modes such as homogeneous charge compression ignition, and extension of the lean combustion limit with advanced ignition concepts and/or hydrogen mixing. The research presented here addresses the technical approach of combining efficient lean spark-ignited natural gas combustion with low emissions obtained from a lean NOx trap catalyst aftertreatment system. This approach can be applied to current lean engine technology or advanced lean engines that may result from related efforts in lean limit extension. Furthermore, the lean NOx trap technology has synergy with hydrogen-assisted lean limit extension since hydrogen is produced from natural gas during the lean NOx trap catalyst system process. The approach is also applicable to other lean engines such as diesel engines, natural gas turbines, and lean gasoline engines; other research activities have focused on those applications. Some commercialization of the technology has occurred for automotive applications (both diesel and lean gasoline engine vehicles) and natural gas turbines for stationary power. The research here specifically addresses barriers to commercialization of the technology for large lean natural gas reciprocating engines for stationary power. The report presented here is a comprehensive collection of research conducted by Oak Ridge National Laboratory (ORNL) on lean NOx trap catalysis for lean natural gas reciprocating engines. The research was performed in the Department of Energy's ARES program from 2003 to 2007 and covers several aspects of the technology. All studies were conducted at ORNL on a Cummins C8.3G+ natural gas engine chosen based on industry input to simulate large lean natural gas engines. Specific technical areas addressed by the research include: NOx reduction efficiency, partial oxidation and reforming chemistry, and the effects of sulfur poisons on the partial oxidation

Parks, II, James E [ORNL; Storey, John Morse [ORNL; Theiss, Timothy J [ORNL; Ponnusamy, Senthil [ORNL; Ferguson, Harley Douglas [ORNL; Williams, Aaron M [ORNL; Tassitano, James B [ORNL

2007-09-01T23:59:59.000Z

198

Low Wind Speed Technology Phase II: Investigation of the Application of Medium-Voltage Variable-Speed Drive Technology to Improve the Cost of Energy from Low Wind Speed Turbines; Behnke, Erdman and Whitaker Engineering, Inc.  

SciTech Connect

This fact sheet describes a subcontract with Behnke, Erdman & Whitaker Engineering, Inc. to test the feasibility of applying medium-voltage variable-speed drive technology to low wind speed turbines.

2006-03-01T23:59:59.000Z

199

Tools for Engineered Surfaces  

Science Conference Proceedings (OSTI)

... Heat Exchangers, Steam Condensers. 2636.3, 216, 21,000. ... Turbines and Turbine Generator Sets, 67, 6, 4, 2. IC Engines, 263, 19, 8, 4. ...

2011-10-19T23:59:59.000Z

200

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

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Wind Turbines  

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

Although all wind turbines operate on similar principles, several varieties are in use today. These include horizontal axis turbines and vertical axis turbines.

202

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

203

FAMU-FSU College of Engineering Department of Mechanical Engineering  

E-Print Network (OSTI)

a conventional power cycle, for example, through a steam turbine or Stirling engine. Four main elements

Krothapalli, Anjaneyulu

204

Lean NOx Trap Catalysis for Lean Natural Gas Engine Applications  

Science Conference Proceedings (OSTI)

Distributed energy is an approach for meeting energy needs that has several advantages. Distributed energy improves energy security during natural disasters or terrorist actions, improves transmission grid reliability by reducing grid load, and enhances power quality through voltage support and reactive power. In addition, distributed energy can be efficient since transmission losses are minimized. One prime mover for distributed energy is the natural gas reciprocating engine generator set. Natural gas reciprocating engines are flexible and scalable solutions for many distributed energy needs. The engines can be run continuously or occasionally as peak demand requires, and their operation and maintenance is straightforward. Furthermore, system efficiencies can be maximized when natural gas reciprocating engines are combined with thermal energy recovery for cooling, heating, and power applications. Expansion of natural gas reciprocating engines for distributed energy is dependent on several factors, but two prominent factors are efficiency and emissions. Efficiencies must be high enough to enable low operating costs, and emissions must be low enough to permit significant operation hours, especially in non-attainment areas where emissions are stringently regulated. To address these issues the U.S. Department of Energy and the California Energy Commission launched research and development programs called Advanced Reciprocating Engine Systems (ARES) and Advanced Reciprocating Internal Combustion Engines (ARICE), respectively. Fuel efficiency and low emissions are two primary goals of these programs. The work presented here was funded by the ARES program and, thus, addresses the ARES 2010 goals of 50% thermal efficiency (fuel efficiency) and engines are being pursued. Approaches include: stoichiometric engine operation with exhaust gas recirculation and three-way catalysis, advanced combustion modes such as homogeneous charge compression ignition, and extension of the lean combustion limit with advanced ignition concepts and/or hydrogen mixing. The research presented here addresses the technical approach of combining efficient lean spark-ignited natural gas combustion with low emissions obtained from a lean NOx trap catalyst aftertreatment system. This approach can be applied to current lean engine technology or advanced lean engines that may result from related efforts in lean limit extension. Furthermore, the lean NOx trap technology has synergy with hydrogen-assisted lean limit extension since hydrogen is produced from natural gas during the lean NOx trap catalyst system process. The approach is also applicable to other lean engines such as diesel engines, natural gas turbines, and lean gasoline engines; other research activities have focused on those applications. Some commercialization of the technology has occurred for automotive applications (both diesel and lean gasoline engine vehicles) and natural gas turbines for stationary power. The research here specifically addresses barriers to commercialization of the technology for large lean natural gas reciprocating engines for stationary power. The report presented here is a comprehensive collection of research conducted by Oak Ridge National Laboratory (ORNL) on lean NOx trap catalysis for lean natural gas reciprocating engines. The research was performed in the Department of Energy's ARES program from 2003 to 2007 and covers several aspects of the technology. All studies were conducted at ORNL on a Cummins C8.3G+ natural gas engine chosen based on industry input to simulate large lean natural gas engines. Specific technical areas addressed by the research include: NOx reduction efficiency, partial oxidation and reforming chemistry, and the effects of sulfur poisons on the partial oxidation

Parks, II, James E [ORNL; Storey, John Morse [ORNL; Theiss, Timothy J [ORNL; Ponnusamy, Senthil [ORNL; Ferguson, Harley Douglas [ORNL; Williams, Aaron M [ORNL; Tassitano, James B [ORNL

2007-09-01T23:59:59.000Z

205

Rejuvenation of Service-Exposed in 738 Turbine Blades  

Science Conference Proceedings (OSTI)

are used as investment cast turbine blades in many aircraft gas turbine engines. In their conventionally cast polycrystalline equiaxed forms, these alloys derive...

206

High-temperature Erosion Behavior of Aluminide-coated Turbine ...  

Science Conference Proceedings (OSTI)

The high-temperature erosion behavior of an aluminide-coated turbine blade ... The Tensile Property Of A Gas Turbine Engine Fan Blade And Casing Material.

207

Multi-pass cooling for turbine airfoils - Energy ...  

An airfoil for a turbine vane of a gas turbine engine. The airfoil includes an outer wall having pressure and suction sides, and a radially extending ...

208

Design of a Transonic Research Turbine Facility Ruolong Ma*  

E-Print Network (OSTI)

and performance of modern gas-turbine engines. A detailed address of the various opportunities for flow control throughout the gas-turbine engine in terms of their impact on each engine component was given by Lord et al.1 in the new Advanced Performance Gas Turbine Laboratory at the University of Notre Dame. II. Turbine Rig

Morris, Scott C.

209

Turbine nozzle positioning system  

DOE Patents (OSTI)

A nozzle guide vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The nozzle guide vane assembly includes an outer shroud having a mounting leg with an opening defined therein, a tip shoe ring having a mounting member with an opening defined therein, a nozzle support ring having a plurality of holes therein and a pin positioned in the corresponding opening in the outer shroud, opening in the tip shoe ring and the hole in the nozzle support ring. A rolling joint is provided between metallic components of the gas turbine engine and the nozzle guide vane assembly. The nozzle guide vane assembly is positioned radially about a central axis of the gas turbine engine and axially aligned with a combustor of the gas turbine engine.

Norton, Paul F. (San Diego, CA); Shaffer, James E. (Maitland, FL)

1996-01-30T23:59:59.000Z

210

Turbine nozzle positioning system  

DOE Patents (OSTI)

A nozzle guide vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The nozzle guide vane assembly includes an outer shroud having a mounting leg with an opening defined therein, a tip shoe ring having a mounting member with an opening defined therein, a nozzle support ring having a plurality of holes therein and a pin positioned in the corresponding opening in the outer shroud, opening in the tip shoe ring and the hole in the nozzle support ring. A rolling joint is provided between metallic components of the gas turbine engine and the nozzle guide vane assembly. The nozzle guide vane assembly is positioned radially about a central axis of the gas turbine engine and axially aligned with a combustor of the gas turbine engine. 9 figs.

Norton, P.F.; Shaffer, J.E.

1996-01-30T23:59:59.000Z

211

Resonant Vibrations Resulting from the Re-Engineering of a Constant-Speed 2-Bladed Turbine to a Variable-Speed 3-Bladed Turbine  

SciTech Connect

The CART3 (Controls Advanced Research Turbine, 3-bladed) at the National Wind Technology Center has recently been converted from a 2-bladed constant speed machine to a 3-bladed variable speed machine designed specically for controls research. The purpose of this conversion was to develop an advanced controls field-testing platform which has the more typical 3-bladed configuration. A result of this conversion was the emergence of several resonant vibrations, some of which initially prevented operation of the turbine until they could be explained and resolved. In this paper, the investigations into these vibrations are presented as 'lessons-learned'. Additionally, a frequency-domain technique called waterfall plotting is discussed and its usefulness in this research is illustrated.

Fleming, P.; Wright, A. D.; Finersh, L. J.

2010-12-01T23:59:59.000Z

212

Resonant Vibrations Resulting from the Re-Engineering of a Constant-Speed 2-Bladed Turbine to a Variable-Speed 3-Bladed Turbine  

DOE Green Energy (OSTI)

The CART3 (Controls Advanced Research Turbine, 3-bladed) at the National Wind Technology Center has recently been converted from a 2-bladed constant speed machine to a 3-bladed variable speed machine designed specically for controls research. The purpose of this conversion was to develop an advanced controls field-testing platform which has the more typical 3-bladed configuration. A result of this conversion was the emergence of several resonant vibrations, some of which initially prevented operation of the turbine until they could be explained and resolved. In this paper, the investigations into these vibrations are presented as 'lessons-learned'. Additionally, a frequency-domain technique called waterfall plotting is discussed and its usefulness in this research is illustrated.

Fleming, P.; Wright, A. D.; Finersh, L. J.

2010-12-01T23:59:59.000Z

213

ADVANCED TURBINE SYSTEMS PROGRAM  

Science Conference Proceedings (OSTI)

The market for power generation equipment is undergoing a tremendous transformation. The traditional electric utility industry is restructuring, promising new opportunities and challenges for all facilities to meet their demands for electric and thermal energy. Now more than ever, facilities have a host of options to choose from, including new distributed generation (DG) technologies that are entering the market as well as existing DG options that are improving in cost and performance. The market is beginning to recognize that some of these users have needs beyond traditional grid-based power. Together, these changes are motivating commercial and industrial facilities to re-evaluate their current mix of energy services. One of the emerging generating options is a new breed of advanced fuel cells. While there are a variety of fuel cell technologies being developed, the solid oxide fuel cells (SOFC) and molten carbonate fuel cells (MCFC) are especially promising, with their electric efficiency expected around 50-60 percent and their ability to generate either hot water or high quality steam. In addition, they both have the attractive characteristics of all fuel cells--relatively small siting footprint, rapid response to changing loads, very low emissions, quiet operation, and an inherently modular design lending itself to capacity expansion at predictable unit cost with reasonably short lead times. The objectives of this project are to:(1) Estimate the market potential for high efficiency fuel cell hybrids in the U.S.;(2) Segment market size by commercial, industrial, and other key markets;(3) Identify and evaluate potential early adopters; and(4) Develop results that will help prioritize and target future R&D investments. The study focuses on high efficiency MCFC- and SOFC-based hybrids and competing systems such as gas turbines, reciprocating engines, fuel cells and traditional grid service. Specific regions in the country have been identified where these technologies and the corresponding early adopters are likely to be located.

Sy Ali

2002-03-01T23:59:59.000Z

214

Stirling Engine Assessment  

Science Conference Proceedings (OSTI)

Stirling engines are reciprocating engines that are fueled by an external heat source. This report presents a summary of the technical trends, commercialization status, and economic viability of Stirling engine technology for distributed generation (DG) applications.

2002-10-28T23:59:59.000Z

215

Yale ME Turbine Test cell instructions Background  

E-Print Network (OSTI)

Yale ME Turbine Test cell instructions Background: The Turbine Technologies Turbojet engine combustion gas backflow into the lab space. Test Cell preparation: 1. Turn on Circuit breakers # 16 of the turbine and check a few items: o Open keyed access door on rear of Turbine enclosure o Check Jet A fuel

Haller, Gary L.

216

Training Reciprocity Achieves Greater Consistency, Saves Time...  

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

Training Reciprocity Achieves Greater Consistency, Saves Time and Money for Idaho, Other DOE Sites Training Reciprocity Achieves Greater Consistency, Saves Time and Money for...

217

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

218

554 IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 37, NO. 3, JULY 2012 Generator Systems for Marine Current Turbine  

E-Print Network (OSTI)

turbine. DFIG Doubly-fed induction generator. PMSG Permanent magnet synchronous generator. MPPT Maximum from a DFIG- and PMSG-based MCT. To high- light differences between the considered technologies, a vari

Paris-Sud XI, Université de

219

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

220

Ceramics for ATS industrial turbines  

DOE Green Energy (OSTI)

US DOE and most US manufacturers of stationary gas turbines are participating in a major national effort to develop advanced turbine systems (ATS). The ATS program will achieve ultrahigh efficiencies, environmental superiority, and cost competitiveness compared with current combustion turbine systems. A major factor in the improved efficiencies of simple cycle ATS gas turbines will be higher operating efficiencies than curren engines. These temperatures strain the limits of metallic alloy and flow-path cooling technologies. Ceramics materials offer a potential alterative to cooled turbine alloys for ATS turbines due to higher melting points than metallics. This paper evaluates ceramics technology and plant economic issues for ATS industrial turbine systems. A program with the objective of demonstrating first-stage ceramic vanes in a commerical industrial turbine is also described.

Wenglarz, R.; Ali, S. [Allison Engine Co., Indianapolis, IN (United States); Layne, A. [USDOE Morgantown Energy Technology Center, WV (United States)

1996-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

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.

222

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

223

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

224

Ceramic turbine nozzle  

DOE Patents (OSTI)

A turbine nozzle and shroud assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes a plurality of segmented vane defining a first vane segment and a second vane segment. Each of the first and second vane segments having a vertical portion. Each of the first vane segments and the second vane segments being positioned in functional relationship one to another within a recess formed within an outer shroud and an inner shroud. The turbine nozzle and shroud assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being less than the preestablished rate of thermal expansion of the other component.

Shaffer, James E. (Maitland, FL); Norton, Paul F. (San Diego, CA)

1996-01-01T23:59:59.000Z

225

Ceramic Cerami Turbine Nozzle  

SciTech Connect

A turbine nozzle vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes an outer shroud and an inner shroud having a plurality of horizontally segmented vanes therebetween being positioned by a connecting member positioning segmented vanes in functional relationship one to another. The turbine nozzle vane assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the other component.

Boyd, Gary L. (Alpine, CA)

1997-04-01T23:59:59.000Z

226

Ceramic turbine nozzle  

DOE Patents (OSTI)

A turbine nozzle and shroud assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components have a preestablished rate of thermal expansion greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes a plurality of segmented vane defining a first vane segment and a second vane segment, each of the first and second vane segments having a vertical portion, and each of the first vane segments and the second vane segments being positioned in functional relationship one to another within a recess formed within an outer shroud and an inner shroud. The turbine nozzle and shroud assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being less than the preestablished rate of thermal expansion of the other component. 4 figs.

Shaffer, J.E.; Norton, P.F.

1996-12-17T23:59:59.000Z

227

Toughened Silcomp composites for gas turbine engine applications. Continuous fiber ceramic composites program: Phase I final report, April 1992--June 1994  

DOE Green Energy (OSTI)

The two main factors driving the development of new industrial gas turbine engine systems are fuel efficiency and reduced emissions. One method of providing improvements in both areas is to reduce the cooling air requirements of the hot gas path components. For this reason ceramic components are becoming increasingly attractive for gas turbine applications because of their greater refractoriness and oxidation resistance. Among the ceramics being considered, continuous fiber ceramic composites (CFCCs) are leading candidates because they combine the high temperature stability of ceramics with the toughness and damage tolerance of composites. The purpose of this program, which is part of DOE`s CFCC initiative, is to evaluate the use of CFCC materials as gas turbine engine components, and to demonstrate the feasibility of producing such components from Toughened Silcomp composites. Toughened silcomp is a CFCC material made by a reactive melt infiltration process, and consists of continuous SiC reinforcing fibers, with an appropriate fiber coating, in a fully dense matrix of SiC and Si. Based on the material physical properties, the material/process improvements realized in Phase 1, and the preliminary design analyses from Task 1, they feel the feasibility of fabricating Toughened Silcomp with the requisite physical and mechanical properties for the intended applications has been demonstrated. Remaining work for Phase 2 is to further improve the system for enhanced oxidation resistance, incorporate additional process controls to enhance the reproducibility of the material, transition the fabrication process to the selected vendors for scale-up, develop a more complete material property data base, including long-term mechanical behavior, and fabricate and test preliminary ``representative part`` specimens.

Corman, G.S.; Luthra, K.L.; Brun, M.K.; Meschter, P.J.

1994-07-01T23:59:59.000Z

228

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 ...

229

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

230

Turbine blade vibration dampening  

DOE Patents (OSTI)

The present turbine wheel assembly increases component life and turbine engine longevity. The combination of the strap and the opening combined with the preestablished area of the outer surface of the opening and the preestablished area of the outer circumferential surface of the strap and the friction between the strap and the opening increases the life and longevity of the turbine wheel assembly. Furthermore, the mass ``M`` or combined mass ``CM`` of the strap or straps and the centrifugal force assist in controlling vibrations and damping characteristics. 5 figs.

Cornelius, C.C.; Pytanowski, G.P.; Vendituoli, J.S.

1997-07-08T23:59:59.000Z

231

Turbine blade vibration dampening  

DOE Patents (OSTI)

The present turbine wheel assembly increases component life and turbine engine longevity. The combination of the strap and the opening combined with the preestablished area of the outer surface of the opening and the preestablished area of the outer circumferential surface of the strap and the friction between the strap and the opening increases the life and longevity of the turbine wheel assembly. Furthermore, the mass "M" or combined mass "CM" of the strap or straps and the centrifugal force assist in controlling vibrations and damping characteristics.

Cornelius, Charles C. (San Diego, CA); Pytanowski, Gregory P. (San Diego, CA); Vendituoli, Jonathan S. (San Diego, CA)

1997-07-08T23:59:59.000Z

232

Energy Efficiency Improvement and Cost Saving Opportunities for the U.S. Iron and Steel Industry An ENERGY STAR(R) Guide for Energy and Plant Managers  

E-Print Network (OSTI)

Furnace Gas Firing Gas Turbine, November 2004. Konijnenburg,10.3) Steam injected gas turbine High-temperature CHP Steaminclude steam turbines, gas turbines, reciprocating engines,

Worrell, Ernst

2011-01-01T23:59:59.000Z

233

Geothermal turbine  

SciTech Connect

A turbine for the generation of energy from geothermal sources including a reaction water turbine of the radial outflow type and a similar turbine for supersonic expansion of steam or gases. The rotor structure may incorporate an integral separator for removing the liquid and/or solids from the steam and gas before the mixture reaches the turbines.

Sohre, J.S.

1982-06-22T23:59:59.000Z

234

Snubber assembly for turbine blades  

DOE Patents (OSTI)

A snubber associated with a rotatable turbine blade in a turbine engine, the turbine blade including a pressure sidewall and a suction sidewall opposed from the pressure wall. The snubber assembly includes a first snubber structure associated with the pressure sidewall of the turbine blade, a second snubber structure associated with the suction sidewall of the turbine blade, and a support structure. The support structure extends through the blade and is rigidly coupled at a first end portion thereof to the first snubber structure and at a second end portion thereof to the second snubber structure. Centrifugal loads exerted by the first and second snubber structures caused by rotation thereof during operation of the engine are at least partially transferred to the support structure, such that centrifugal loads exerted on the pressure and suctions sidewalls of the turbine blade by the first and second snubber structures are reduced.

Marra, John J

2013-09-03T23:59:59.000Z

235

NETL: Turbines - About the Turbine Program  

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

Turbines About the Turbine Program Siemens Turbine Turbines have been the world's energy workhorses for generations, harkening back to primitive devices such as waterwheels (2,000...

236

Turbine nozzle attachment system  

DOE Patents (OSTI)

A nozzle guide vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The nozzle guide vane assembly includes a pair of legs extending radially outwardly from an outer shroud and a pair of mounting legs extending radially inwardly from an inner shroud. Each of the pair of legs and mounting legs have a pair of holes therein. A plurality of members attached to the gas turbine engine have a plurality of bores therein which axially align with corresponding ones of the pair of holes in the legs. A plurality of pins are positioned within the corresponding holes and bores radially positioning the nozzle guide vane assembly about a central axis of the gas turbine engine.

Norton, Paul F. (San Diego, CA); Shaffer, James E. (Maitland, FL)

1995-01-01T23:59:59.000Z

237

Turbine nozzle attachment system  

DOE Patents (OSTI)

A nozzle guide vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and is attached to conventional metallic components. The nozzle guide vane assembly includes a pair of legs extending radially outwardly from an outer shroud and a pair of mounting legs extending radially inwardly from an inner shroud. Each of the pair of legs and mounting legs have a pair of holes therein. A plurality of members attached to the gas turbine engine have a plurality of bores therein which axially align with corresponding ones of the pair of holes in the legs. A plurality of pins are positioned within the corresponding holes and bores radially positioning the nozzle guide vane assembly about a central axis of the gas turbine engine. 3 figs.

Norton, P.F.; Shaffer, J.E.

1995-10-24T23:59:59.000Z

238

Report to Congress on Server and Data Center Energy Efficiency: Public Law 109-431  

E-Print Network (OSTI)

based on traditional gas turbine or engine technologies canas reciprocating engines and gas turbines, for use in dataare included whereas gas turbine and microturbine systems

Brown, Richard; Alliance to Save Energy; ICF Incorporated; ERG Incorporated; U.S. Environmental Protection Agency

2008-01-01T23:59:59.000Z

239

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

240

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...

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

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...

242

Micro-turbine design point definition using optimization techniques.  

E-Print Network (OSTI)

??During a gas turbine development phase an important engineer task is to find the appropriate engine design point that meet all required specifications. This task (more)

Diogo Ferraz Cavalca

2012-01-01T23:59:59.000Z

243

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

244

Offshore Wind Turbines: Some Technical Challenges  

E-Print Network (OSTI)

1 Offshore Wind Turbines: Some Technical Challenges Prof. Guy Houlsby FREng Oxford University House engineers concerned with installation of offshore wind turbines. The author is Professor of Civil solved, a DTI and EPSRC-sponsored research programme on foundations for wind turbines will be briefly

Houlsby, Guy T.

245

DoE Turbine Conference Poster 2010-10-13 v7  

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

TOMO sm Lithographic Molding for Turbine Blade Cooling DoE Phase II SBIR - Advanced Cooling for Turbine Engines Solid Model 1180 Seminole Trail * Charlottesville, VA 22901 *...

246

Tubular and Sector Heat Pipes with Interconnected Branches for Gas Turbine and/or Compressor Cooling.  

E-Print Network (OSTI)

?? Designing turbines for either aerospace or power production is a daunting task for any heat transfer scientist or engineer. Turbine designers are continuously pursuing (more)

Reding, Brian D., II

2013-01-01T23:59:59.000Z

247

Influence of hole shape on the performance of a turbine vane endwall film-cooling scheme  

E-Print Network (OSTI)

Rising combustor exit temperatures in gas turbine engines necessitate active cooling for the downstream industrial gas turbine engines. One means of achieving this goal is to increase the combustion temper- ature are so high in today's gas turbine engines that in the absence of complex cooling schemes the turbine

Thole, Karen A.

248

Turbines in the sky  

SciTech Connect

Gas turbines are being investigated as power sources for the proposed Star Wars weapons flatforms. The gas turbine engine offers the best opportunity for exploiting the high-temperature potential of both nuclear and chemical combustion. The use of mature gas turbine technology and existing materials would result in highly reliable PCUs capable of meeting SDI's requirements. However, operation under the temperature limits imposed by existing materials would result in a prohibitively heavy system. Cooled blades would somewhat increase temperature capability; however the turbine's mass, though reduced, would still be unacceptably large. The greatest improvements would result from the ability to operate at temperatures of up to 2000 K, pressures up to 14 MPa, and stress up to 690 MPa.

Boyle, R.V.; Riple, J.C.

1987-07-01T23:59:59.000Z

249

University of Waterloo: Logistic Regression and Reciprocal ...  

Science Conference Proceedings (OSTI)

... Rank Fusion at the Microblog Track ... Buettcher. Reciprocal rank fusion out- performs condorcet and individual rank learning methods. ...

2013-02-12T23:59:59.000Z

250

The Computational Complexity of Quantified Reciprocals  

Science Conference Proceedings (OSTI)

We study the computational complexity of reciprocal sentences with quantified antecedents. We observe a computational dichotomy between different interpretations of reciprocity, and shed some light on the status of the so-called Strong Meaning Hypothesis. ... Keywords: Reciprocal expressions, Strong Meaning Hypothesis, computational complexity, generalized quantifiers

Jakub Szymanik

2009-03-01T23:59:59.000Z

251

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

252

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

253

Temperature stratified turbine compressors  

SciTech Connect

A method and apparatus for improving the efficiency of a compressor of a gas turbine engine is disclosed. The inlet gas entering the compressor is stratified into two portions of different temperatures. The higher temperature gas is introduced adjacent the outer tipe of the compressor blades to reduce the relative Mach number of the flow at the area.

Earnest, E.R.; Passinos, B.

1979-01-09T23:59:59.000Z

254

ADVANCED TURBINE SYSTEMS PROGRAM  

SciTech Connect

Natural gas combustion turbines are rapidly becoming the primary technology of choice for generating electricity. At least half of the new generating capacity added in the US over the next twenty years will be combustion turbine systems. The Department of Energy has cosponsored with Siemens Westinghouse, a program to maintain the technology lead in gas turbine systems. The very ambitious eight year program was designed to demonstrate a highly efficient and commercially acceptable power plant, with the ability to fire a wide range of fuels. The main goal of the Advanced Turbine Systems (ATS) Program was to develop ultra-high efficiency, environmentally superior and cost effective competitive gas turbine systems for base load application in utility, independent power producer and industrial markets. Performance targets were focused on natural gas as a fuel and included: System efficiency that exceeds 60% (lower heating value basis); Less than 10 ppmv NO{sub x} emissions without the use of post combustion controls; Busbar electricity that are less than 10% of state of the art systems; Reliability-Availability-Maintainability (RAM) equivalent to current systems; Water consumption minimized to levels consistent with cost and efficiency goals; and Commercial systems by the year 2000. In a parallel effort, the program was to focus on adapting the ATS engine to coal-derived or biomass fuels. In Phase 1 of the ATS Program, preliminary investigators on different gas turbine cycles demonstrated that net plant LHV based efficiency greater than 60% was achievable. In Phase 2 the more promising cycles were evaluated in greater detail and the closed-loop steam-cooled combined cycle was selected for development because it offered the best solution with least risk for achieving the ATS Program goals for plant efficiency, emissions, cost of electricity and RAM. Phase 2 also involved conceptual ATS engine and plant design and technology developments in aerodynamics, sealing, combustion, cooling, materials, coatings and casting development. The market potential for the ATS gas turbine in the 2000-2014 timeframe was assessed for combined cycle, simple cycle and integrated gasification combined cycle, for three engine sizes. The total ATS market potential was forecasted to exceed 93 GW. Phase 3 and Phase 3 Extension involved further technology development, component testing and W501ATS engine detail design. The technology development efforts consisted of ultra low NO{sub x} combustion, catalytic combustion, sealing, heat transfer, advanced coating systems, advanced alloys, single crystal casting development and determining the effect of steam on turbine alloys. Included in this phase was full-load testing of the W501G engine at the McIntosh No. 5 site in Lakeland, Florida.

Gregory Gaul

2004-04-21T23:59:59.000Z

255

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

256

Multiple piece turbine airfoil  

SciTech Connect

A turbine airfoil, such as a rotor blade or a stator vane, for a gas turbine engine, the airfoil formed as a shell and spar construction with a plurality of dog bone struts each mounted within openings formed within the shell and spar to allow for relative motion between the spar and shell in the airfoil chordwise direction while also forming a seal between adjacent cooling channels. The struts provide the seal as well as prevent bulging of the shell from the spar due to the cooling air pressure.

Kimmel, Keith D (Jupiter, FL); Wilson, Jr., Jack W. (Palm Beach Gardens, FL)

2010-11-02T23:59:59.000Z

257

NUCLEAR GAS ENGINE  

SciTech Connect

A preliminary design study of the nuclear gas engine, consisting of a gas-cooled reactor directly coupled to a reciprocating engine, is presented. The principles of operation of the proposed gas engine are outlined and typical variations anre discussed. The nuclear gas engine is compared with other reciprocating engines and air compressors. A comparison between the ideal and actual cycles is made, with particular attention given to pumping, heat, and other losses to be expected. The applications and development of the nuclear gas engine are discussed. (W.D.M.)

Fraas, A.P.

1958-09-25T23:59:59.000Z

258

Heat transfer and film-cooling for the endwall of a first stage turbine vane  

E-Print Network (OSTI)

the turbine. Turbine inlet conditions in a gas turbine engine gen- erally consist of temperature and velocityHeat transfer and film-cooling for the endwall of a first stage turbine vane Karen A. Thole of the airfoils. One means of preventing degradation in the turbine is to film-cool components whereby coolant

Thole, Karen A.

259

TurbSim: Reliability-based wind turbine simulator  

Science Conference Proceedings (OSTI)

Wind turbine farms are an effective generator of electricity in windy parts of the world, with prices progressing to levels competitive with other sources. Choosing the correct turbine for a given installation requires significant engineering and the ...

Joseph T. Foley; Timothy G. Gutowski

2008-05-01T23:59:59.000Z

260

Characterization of turbine rim seal flow and its sealing effectiveness  

E-Print Network (OSTI)

In a gas turbine engine, ingestion of hot gas from the flowpath into the gaps between the turbine rotor and stator can lead to elevated metal temperatures and a deterioration of component life. To prevent ingestion, bleed ...

Catalfamo, Peter T

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Mixer-Ejector Wind Turbine: Breakthrough High Efficiency Shrouded Wind Turbine  

SciTech Connect

Broad Funding Opportunity Announcement Project: FloDesign Wind Turbines innovative wind turbine, inspired by the design of jet engines, could deliver 300% more power than existing wind turbines of the same rotor diameter by extracting more energy over a larger area. FloDesign Wind Turbines unique shrouded design expands the wind capture area, and the mixing vortex downstream allows more energy to flow through the rotor without stalling the turbine. The unique rotor and shrouded design also provide significant opportunity for mass production and simplified assembly, enabling mid-scale turbines (approximately 100 kW) to produce power at a cost that is comparable to larger-scale conventional turbines.

None

2010-02-22T23:59:59.000Z

262

Turbine Option  

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

study was sponsored by the Turbine Survival Program in cooperation with the Department of Energy (DOE), Hydro Optimization Team (HOT), and the Federal Columbia River Power System...

263

Application Of The Mold Sdm Process To The Fabrication Of Ceramic Parts For A Micro Gas Turbine Engine  

E-Print Network (OSTI)

... engine with silicon nitcon part is being developed. Inty1 project t he Mold Shape Deposit8fl Manufact23yP (Mold SDM) process is usedt fabricat highqualit yceramicpart wit complex shapes such ast herot/ group. The merit of micro gastsy1:W engines in general are described before focusing on processing and fabricat3C issues. Theobt23C: silicon nitcon part are charactCWWFfl concerningtonc mechanical and microstyPCWWFfl property12 The surface roughness, shrinkage during sinty1281 finaldensit yand achievablefeat /2 sizes have beendet/8fl8yPC Using Mold SDM a functPC81 rott group has been successfully fabricatul During spin tiny at roomt emperat/1 wit nit/1/ as driving gas 456,000 rpm rot28F:yP speed has been achieved.

Sangkyun Kang; Jrgen Stampfl; Alexander G. Cooper; Fritz B. Prinz

2000-01-01T23:59:59.000Z

264

Failure Analysis of a Reciprocating Compressor Head  

Science Conference Proceedings (OSTI)

Abstract Scope, A major oil company operation experienced a reciprocating compressor failure on one of its offshore platforms. The compressor head on the 1st...

265

Optimizing Dam Operations for Power and for Fish: an Overview of the US Department of Energy and US Army Corps of Engineers ADvanced Turbine Development R&D. A Pre-Conference Workshop at HydroVision 2006, Oregon Convention Center, Portland, Oregon July 31, 2006  

DOE Green Energy (OSTI)

This booklet contains abstracts of presentations made at a preconference workshop on the US Department of Energy and US Army Corps of Engineers hydroturbine programs. The workshop was held in conjunction with Hydrovision 2006 July 31, 2006 at the Oregon Convention Center in Portland Oregon. The workshop was organized by the Corps of Engineers, PNNL, and the DOE Wind and Hydropower Program. Presenters gave overviews of the Corps' Turbine Survival Program and the history of the DOE Advanced Turbine Development Program. They also spoke on physical hydraulic models, biocriteria for safe fish passage, pressure investigations using the Sensor Fish Device, blade strike models, optimization of power plant operations, bioindex testing of turbine performance, approaches to measuring fish survival, a systems view of turbine performance, and the Turbine Survival Program design approach.

Dauble, Dennis D.

2006-08-01T23:59:59.000Z

266

Advanced Turbine Technology Applications Project (ATTAP). 1944 Annual report  

DOE Green Energy (OSTI)

This report summarizes work performed in development and demonstration of structural ceramics technology for automotive gas turbine engines. At the end of this period, the project name was changed to ``Ceramic Turbine Engine Demonstration Project``, effective Jan. 1995. Objectives are to provide early field experience demonstrating the reliability and durability of ceramic components in a modified, available gas turbine engine application, and to scale up and improve the manufacturing processes for ceramic turbine engine components and demonstrate the application of these processes in the production environment. The 1994 ATTAP activities emphasized demonstration and refinement of the ceramic turbine nozzles in the AlliedSignal/Garrett Model 331-200[CT] engine test bed in preparation for field testing; improvements in understanding the vibration characteristics of the ceramic turbine blades; improvements in critical ceramics technologies; and scaleup of the process used to manufacture ceramic turbine components.

NONE

1995-06-01T23:59:59.000Z

267

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

268

A Primer on Electric Utilities, Deregulation, and Restructuring...  

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

reciprocating engines, steam turbines, and gas turbines. Hydropower plants direct water flow against turbine blades attached to one end of a generator rotor. When the water turns...

269

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

270

Harmonic engine  

Science Conference Proceedings (OSTI)

A high efficiency harmonic engine based on a resonantly reciprocating piston expander that extracts work from heat and pressurizes working fluid in a reciprocating piston compressor. The engine preferably includes harmonic oscillator valves capable of oscillating at a resonant frequency for controlling the flow of working fluid into and out of the expander, and also preferably includes a shunt line connecting an expansion chamber of the expander to a buffer chamber of the expander for minimizing pressure variations in the fluidic circuit of the engine. The engine is especially designed to operate with very high temperature input to the expander and very low temperature input to the compressor, to produce very high thermal conversion efficiency.

Bennett, Charles L. (Livermore, CA)

2009-10-20T23:59:59.000Z

271

Title: A brief history of the Rolls-Royce University Technology Centre in Gas Turbine Noise at the Institute of Sound and Vibration Research  

E-Print Network (OSTI)

Report Title: A brief history of the Rolls-Royce University Technology Centre in Gas Turbine Noise and systems engineering, gas turbine transmission systems and gas turbine noise. The UTC in gas turbine noise to generation and propagation of noise from gas turbine engines. Aircraft noise is a critical technical issue

Sóbester, András

272

Creep performance of candidate SiC and Si{sub 3}N{sub 4} materials for land-based, gas turbine engine components  

DOE Green Energy (OSTI)

Tensile creep-rupture of a commercial gas pressure sintered Si3N4 and a sintered SiC is examined at 1038, 1150, and 1350 C. These 2 ceramics are candidates for nozzles and combustor tiles that are to be retrofitted in land-based gas turbine engines, and there is interest in their high temperature performance over service times {ge} 10,000 h (14 months). For this long lifetime, a static tensile stress of 300 MPa at 1038/1150 C and 125 Mpa at 1350 C cannot be exceeded for Si3N4; for SiC, the corresponding numbers are 300 Mpa at 1038 C, 250 MPa at 1150 C, and 180 MPa at 1350 C. Creep-stress exponents for Si3N4 are 33, 17, and 8 for 1038, 1150, 1350 C; fatigue- stress exponents are equivalent to creep exponents, suggesting that the fatigue mechanism causing fracture is related to the creep mechanism. Little success was obtained in producing failure in SiC after several decades of time through exposure to appropriate tensile stress; if failure did not occur on loading, then the SiC specimens most often did not creep-rupture. Creep-stress exponents for the SiC were determined to be 57, 27, and 11 for 1038, 1150, and 1350 C. For SiC, the fatigue-stress exponents did not correlate as well with creep-stress exponents. Failures that occurred in the SiC were a result of slow crack growth that initiated from the surface.

Wereszczak, A.A.; Kirkland, T.P.

1996-03-01T23:59:59.000Z

273

Reducing Uncertainties in Life Limits of Titanium Alloys in Turbine ...  

Science Conference Proceedings (OSTI)

Presentation Title, Reducing Uncertainties in Life Limits of Titanium Alloys in Turbine Engine Rotors. Author(s), James M. Larsen, Sushant Jha, Christopher J.

274

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,.

275

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.

276

Turbine Component Rapid Manufacturing Via Electron Beam Melting...  

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

Electrochemical Machining- Barber-Nichols Background Development of new, more efficient gas turbine engines is achieved by a lengthy process of maximizing performance through...

277

The Development of Single Crystal Superalloy Turbine Blades  

Science Conference Proceedings (OSTI)

Airbus Industries A310 aircraft. Engine certification and initial production shipments are planned for July of 1980. Alloy 454 turbine blades have also been ...

278

3D Modeling of Dendritic Grain Structures in Turbine Blade ...  

Science Conference Proceedings (OSTI)

modern aircraft engines and land-based power-plants. .... Figure 2 illustrates the grid generation for a close-up detail of a turbine blade geometry. (junction...

279

Prediction of Helicoper Engine Deterioration: A Data Mining Approach.  

E-Print Network (OSTI)

??Use of a gas turbine engine as the primary power source has been popular in light and heavy industries, aerospace engineering, marine engineering, etc. Gas (more)

Chu, Wen-Hsiung

2006-01-01T23:59:59.000Z

280

Rene' N4: A First Generation Single Crystal Turbine Airfoil Alloy with ...  

Science Conference Proceedings (OSTI)

GE Aircraft Engine's first generation single crystal (SX) turbine airfoil alloy, Rene N ..... Aircraft Engines, and Warren King who is now with GE Power. Generation...

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

ADVANCED RECIPROCATING COMPRESSION TECHNOLOGY (ARCT)  

SciTech Connect

The U.S. natural gas pipeline industry is facing the twin challenges of increased flexibility and capacity expansion. To meet these challenges, the industry requires improved choices in gas compression to address new construction and enhancement of the currently installed infrastructure. The current fleet of installed reciprocating compression is primarily slow-speed integral machines. Most new reciprocating compression is and will be large, high-speed separable units. The major challenges with the fleet of slow-speed integral machines are: limited flexibility and a large range in performance. In an attempt to increase flexibility, many operators are choosing to single-act cylinders, which are causing reduced reliability and integrity. While the best performing units in the fleet exhibit thermal efficiencies between 90% and 92%, the low performers are running down to 50% with the mean at about 80%. The major cause for this large disparity is due to installation losses in the pulsation control system. In the better performers, the losses are about evenly split between installation losses and valve losses. The major challenges for high-speed machines are: cylinder nozzle pulsations, mechanical vibrations due to cylinder stretch, short valve life, and low thermal performance. To shift nozzle pulsation to higher orders, nozzles are shortened, and to dampen the amplitudes, orifices are added. The shortened nozzles result in mechanical coupling with the cylinder, thereby, causing increased vibration due to the cylinder stretch mode. Valve life is even shorter than for slow speeds and can be on the order of a few months. The thermal efficiency is 10% to 15% lower than slow-speed equipment with the best performance in the 75% to 80% range. The goal of this advanced reciprocating compression program is to develop the technology for both high speed and low speed compression that will expand unit flexibility, increase thermal efficiency, and increase reliability and integrity. Retrofit technologies that address the challenges of slow-speed integral compression are: (1) optimum turndown using a combination of speed and clearance with single-acting operation as a last resort; (2) if single-acting is required, implement infinite length nozzles to address nozzle pulsation and tunable side branch absorbers for 1x lateral pulsations; and (3) advanced valves, either the semi-active plate valve or the passive rotary valve, to extend valve life to three years with half the pressure drop. This next generation of slow-speed compression should attain 95% efficiency, a three-year valve life, and expanded turndown. New equipment technologies that address the challenges of large-horsepower, high-speed compression are: (1) optimum turndown with unit speed; (2) tapered nozzles to effectively reduce nozzle pulsation with half the pressure drop and minimization of mechanical cylinder stretch induced vibrations; (3) tunable side branch absorber or higher-order filter bottle to address lateral piping pulsations over the entire extended speed range with minimal pressure drop; and (4) semi-active plate valves or passive rotary valves to extend valve life with half the pressure drop. This next generation of large-horsepower, high-speed compression should attain 90% efficiency, a two-year valve life, 50% turndown, and less than 0.75 IPS vibration. This program has generated proof-of-concept technologies with the potential to meet these ambitious goals. Full development of these identified technologies is underway. The GMRC has committed to pursue the most promising enabling technologies for their industry.

Danny M. Deffenbaugh; Klaus Brun; Ralph E. Harris; J. Pete Harrell; Robert J. Mckee; J. Jeffrey Moore; Steven J. Svedeman; Anthony J. Smalley; Eugene L. Broerman; Robert A Hart; Marybeth G. Nored; Ryan S. Gernentz; Shane P. Siebenaler

2005-12-01T23:59:59.000Z

282

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

283

Dual Structure Turbine Disks Via Partial Immersion Heat Treatment  

Science Conference Proceedings (OSTI)

turbine disk forging. The method is termed partial immersion treatment. It includes ... to improve gas turbine operating efficiencies generally results in increased turbine inlet .... to aid in this manual advance. (Figure lb). ... A second Astroloy disk was ..... engineer. (prime contractor) was Mr. R. M. Gasior, of Cytemp Specialty.

284

Turbine vane structure  

DOE Patents (OSTI)

A liquid cooled stator blade assembly for a gas turbine engine includes an outer shroud having a pair of liquid inlets and a pair of liquid outlets supplied through a header and wherein means including tubes support the header radially outwardly of the shroud and also couple the header with the pair of liquid inlets and outlets. A pair of turbine vanes extend radially between the shroud and a vane platform to define a gas turbine motive fluid passage therebetween; and each of the vanes is cooled by an internal body casting of super alloy material with a grooved layer of highly heat conductive material that includes spaced apart flat surface trailing edges in alignment with a flat trailing edge of the casting joined to wall segments of the liner which are juxtaposed with respect to the internal casting to form an array of parallel liquid inlet passages on one side of the vane and a second plurality of parallel liquid return passages on the opposite side of the vane; and a superalloy heat and wear resistant imperforate skin covers the outer surface of the composite blade including the internal casting and the heat conductive layer; a separate trailing edge section includes an internal casting and an outer skin butt connected to the end surfaces of the internal casting and the heat conductive layer to form an easily assembled liquid cooled trailing edge section in the turbine vane.

Irwin, John A. (Greenwood, IN)

1980-08-19T23:59:59.000Z

285

Advanced turbine systems program  

SciTech Connect

In accordance with the goals of the DOE program, improvements in the gas turbine are the primary focus of Allison activity during Phase I. To this end Allison conducted a survey of potentially applicable gas turbine cycles and selected the advanced combined cycle as reference system. Extensive analysis of two versions of the advanced combined cycle was performed against the requirement for a 60% thermal efficiency (LHV) utility-sized, natural gas fired system. This analysis resulted in technology requirements for this system. Additional analysis determined emissions potential for the system, established a coal-fueled derivative system and a commercialization plan. This report deals with the technical requirements for a system that meets the thermal efficiency goal. Allison initially investigated four basic thermodynamic cycles: Humid air turbine, intercalate-recuperated systems, advanced combined cycle, chemically recuperated cycle. Our survey and cycle analysis indicated that au had the potential of reaching 60% thermal efficiency. We also concluded that engine hot section technology would be a critical technology regardless of which cycle was chosen. Based on this result Allison chose to concentrate on the advanced combined cycle. This cycle is well known and understood by the utility turbine user community and is therefore likely to be acceptable to users.

Wilkes, C.; Mukavetz, D.W.; Knickerbocker, T.K.; Ali, S.A.

1992-12-31T23:59:59.000Z

286

Advanced turbine systems program  

SciTech Connect

In accordance with the goals of the DOE program, improvements in the gas turbine are the primary focus of Allison activity during Phase I. To this end Allison conducted a survey of potentially applicable gas turbine cycles and selected the advanced combined cycle as reference system. Extensive analysis of two versions of the advanced combined cycle was performed against the requirement for a 60% thermal efficiency (LHV) utility-sized, natural gas fired system. This analysis resulted in technology requirements for this system. Additional analysis determined emissions potential for the system, established a coal-fueled derivative system and a commercialization plan. This report deals with the technical requirements for a system that meets the thermal efficiency goal. Allison initially investigated four basic thermodynamic cycles: Humid air turbine, intercalate-recuperated systems, advanced combined cycle, chemically recuperated cycle. Our survey and cycle analysis indicated that au had the potential of reaching 60% thermal efficiency. We also concluded that engine hot section technology would be a critical technology regardless of which cycle was chosen. Based on this result Allison chose to concentrate on the advanced combined cycle. This cycle is well known and understood by the utility turbine user community and is therefore likely to be acceptable to users.

Wilkes, C.; Mukavetz, D.W.; Knickerbocker, T.K.; Ali, S.A.

1992-01-01T23:59:59.000Z

287

Engineering  

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

Engineering Engineering Engineering1354608000000EngineeringSome of these resources are LANL-only and will require Remote Access./No/Questions? 667-5809library@lanl.gov Engineering Some of these resources are LANL-only and will require Remote Access. Key Resources Reference Standards Data Sources Organizations Journals Key Resources Engineering Village Includes Engineering Index (Ei) and Compendex Knovel Handbooks, databases, and eBooks integrated with analytical and search tools IEEE Xplore Full text access to technical literature, standards, and conference proceedings in engineering and technology SPIE Digital Library Full-text papers from SPIE journals and proceedings published since 1998; subject coverage includes optics, photonics, electronic imaging, visual information processing, biomedical optics, lasers, and

288

Engineering  

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

Electrodynamics Bioscience, Biosecurity, Health Chemical Science Earth, Space Sciences Energy Engineering High Energy Density Plasmas, Fluids Information Science, Computing,...

289

Uniform Transboundary Pollution Reciprocal Access Act (Montana) |  

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

Uniform Transboundary Pollution Reciprocal Access Act (Montana) Uniform Transboundary Pollution Reciprocal Access Act (Montana) Uniform Transboundary Pollution Reciprocal Access Act (Montana) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Installer/Contractor Rural Electric Cooperative Tribal Government Institutional Fuel Distributor Transportation Program Info State Montana Program Type Environmental Regulations This Act allows any entity in a Reciprocating Jurisdiction harmed by pollution originating in the state of Montana to bring an action or other proceeding against the source of that pollution in the state of Montana. Such an entity has the same rights in the state of Montana as they would if

290

A health retreat : building/landscape reciprocity  

E-Print Network (OSTI)

This thesis applies architectural principles sympathetic to reciprocity between buildings and the landscape. It is composed from generic vocabularies derived from Scandinavian and other references, and is demonstrated by ...

Carbin, Julie Patricia

1984-01-01T23:59:59.000Z

291

Land-based turbine casting initiative  

DOE Green Energy (OSTI)

To meet goals for the ATS program, technical advances developed for aircraft gas turbine engines need to be applied to land-based gas turbines. These advances include directionally solidified and single crystal castings, alloys tailored to exploit these microstructures, complex internal cooling schemes, and coatings. The proposed program to scale aircraft gas turbine casting technology up to land based gas turbine size components is based on low sulfur alloys, casting process development, post-cast process development, and establishing casting defect tolerance levels. The inspection side is also discussed.

Mueller, B.A.; Spicer, R.A. [Howmet Corp., Whitehall, MI (United States)

1995-12-31T23:59:59.000Z

292

Heater head for a Stirling engine  

Science Conference Proceedings (OSTI)

A heater head is described for a compound Stirling engine modules, each including a displacer cylinder coaxially aligned with the displacer cylinder of the other of the engine modules, a displacer piston mounted for reciprocation in the displacer cylinder.

Darooka, D.K.

1988-09-06T23:59:59.000Z

293

Turbine seal assembly  

SciTech Connect

A seal assembly that limits gas leakage from a hot gas path to one or more disc cavities in a turbine engine. The seal assembly includes a seal apparatus that limits gas leakage from the hot gas path to a respective one of the disc cavities. The seal apparatus comprises a plurality of blade members rotatable with a blade structure. The blade members are associated with the blade structure and extend toward adjacent stationary components. Each blade member includes a leading edge and a trailing edge, the leading edge of each blade member being located circumferentially in front of the blade member's corresponding trailing edge in a direction of rotation of the turbine rotor. The blade members are arranged such that a space having a component in a circumferential direction is defined between adjacent circumferentially spaced blade members.

Little, David A.

2013-04-16T23:59:59.000Z

294

Multiple piece turbine airfoil  

SciTech Connect

A turbine airfoil, such as a rotor blade or a stator vane, for a gas turbine engine, the airfoil formed as a shell and spar construction with a plurality of hook shaped struts each mounted within channels extending in a spanwise direction of the spar and the shell to allow for relative motion between the spar and shell in the airfoil chordwise direction while also fanning a seal between adjacent cooling channels. The struts provide the seal as well as prevent bulging of the shell from the spar due to the cooling air pressure. The hook struts have a hooked shaped end and a rounded shaped end in order to insert the struts into the spar.

Kimmel, Keith D (Jupiter, FL)

2010-11-09T23:59:59.000Z

295

Wind turbine  

DOE Patents (OSTI)

A wind turbine of the type having an airfoil blade (15) mounted on a flexible beam (20) and a pitch governor (55) which selectively, torsionally twists the flexible beam in response to wind turbine speed thereby setting blade pitch, is provided with a limiter (85) which restricts unwanted pitch change at operating speeds due to torsional creep of the flexible beam. The limiter allows twisting of the beam by the governor under excessive wind velocity conditions to orient the blades in stall pitch positions, thereby preventing overspeed operation of the turbine. In the preferred embodiment, the pitch governor comprises a pendulum (65,70) which responds to changing rotor speed by pivotal movement, the limiter comprising a resilient member (90) which engages an end of the pendulum to restrict further movement thereof, and in turn restrict beam creep and unwanted blade pitch misadjustment.

Cheney, Jr., Marvin C. (Glastonbury, CT)

1982-01-01T23:59:59.000Z

296

Creep performance of candidate SiC and Si{sub 3}N{sub 4} materials for land-based, gas turbine engine components  

DOE Green Energy (OSTI)

The tensile creep-rupture performance of a commercially available gas pressure sintered silicon nitride (Si{sub 3}N{sub 4}) and a sintered silicon carbide (SiC) is examined at 1038, 1150, and 1350 C. These two ceramic materials are candidates for nozzles and combustor tiles that are to be retrofitted in land-based gas turbine engines, and interest exists to investigate their high-temperature mechanical performance over service times up to, and in excess of, 10,000 hours ({approx}14 months). To achieve lifetimes approaching 10,000 hours for the candidate Si{sub 3}N{sub 4} ceramic, it was found (or it was estimated based on ongoing test data) that a static tensile stress of 300 MPa at 1038 and 1150 C, and a stress of 125 MPa at 1350 C cannot be exceeded. For the SiC ceramic, it was estimated from ongoing test data that a static tensile stress of 300 MPa at 1038 C, 250 MPa at 1150 C, and 180 MPa at 1350 C cannot be exceeded. The creep-stress exponents for this Si{sub 3}N{sub 4} were determined to be 33, 17, and 8 for 1038, 1150, and 1350 C, respectively. The fatigue-stress exponents for the Si{sub 3}N{sub 4} were found to be equivalent to the creep exponents, suggesting that the fatigue mechanism that ultimately causes fracture is controlled and related to the creep mechanisms. Little success was experienced at generating failures in the SiC after several decades of time through exposure to appropriate tensile stress; it was typically observed that if failure did not occur on loading, then the SiC specimens most often did not creep-rupture. However, creep-stress exponents for the SiC were determined to be 57, 27, and 11 for 1038, 1150, and 1350 C, respectively. For SiC, the fatigue-stress exponents did not correlate as well with creep-stress exponents. Failures that occurred in the SiC were a result of slow crack growth that was initiated from the specimen`s surface.

Wereszczak, A.A.; Kirkland, T.P. [Oak Ridge National Lab., TN (United States). High Temperature Materials Lab.

1997-10-01T23:59:59.000Z

297

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

298

Department of Aeronautics and Astronautics School of Engineering  

E-Print Network (OSTI)

is conducted at the Gas Turbine Laboratory (GTL) which has had a worldwide reputation for research and teaching at the forefront of gas turbine technology for over 50 years. The concept of an MIT Gas Turbine Laboratory control, (3) heat transfer in turbine blading, (4) gas turbine engine noise reduction and aero

de Weck, Olivier L.

299

Rotor blades for turbine engines  

DOE Patents (OSTI)

A tip shroud that includes a plurality of damping fins, each damping fin including a substantially non-radially-aligned surface that is configured to make contact with a tip shroud of a neighboring rotor blade. At least one damping fin may include a leading edge damping fin and at least one damping fin may include a trailing edge damping fin. The leading edge damping fin may be configured to correspond to the trailing edge damping fin.

Piersall, Matthew R; Potter, Brian D

2013-02-12T23:59:59.000Z

300

NEXT GENERATION TURBINE PROGRAM  

SciTech Connect

The Next Generation Turbine (NGT) Program's technological development focused on a study of the feasibility of turbine systems greater than 30 MW that offer improvement over the 1999 state-of-the-art systems. This program targeted goals of 50 percent turndown ratios, 15 percent reduction in generation cost/kW hour, improved service life, reduced emissions, 400 starts/year with 10 minutes to full load, and multiple fuel usage. Improvement in reliability, availability, and maintainability (RAM), while reducing operations, maintenance, and capital costs by 15 percent, was pursued. This program builds on the extensive low emissions stationary gas turbine work being carried out by Pratt & Whitney (P&W) for P&W Power Systems (PWPS), which is a company under the auspices of the United Technologies Corporation (UTC). This study was part of the overall Department of Energy (DOE) NGT Program that extends out to the year 2008. A follow-on plan for further full-scale component hardware testing is conceptualized for years 2002 through 2008 to insure a smooth and efficient transition to the marketplace for advanced turbine design and cycle technology. This program teamed the National Energy Technology Laboratory (NETL), P&W, United Technologies Research Center (UTRC), kraftWork Systems Inc., a subcontractor on-site at UTRC, and Multiphase Power and Processing Technologies (MPPT), an off-site subcontractor. Under the auspices of the NGT Program, a series of analyses were performed to identify the NGT engine system's ability to serve multiple uses. The majority were in conjunction with a coal-fired plant, or used coal as the system fuel. Identified also was the ability of the NGT system to serve as the basis of an advanced performance cycle: the humid air turbine (HAT) cycle. The HAT cycle is also used with coal gasification in an integrated cycle HAT (IGHAT). The NGT systems identified were: (1) Feedwater heating retrofit to an existing coal-fired steam plant, which could supply both heat and peaking power (Block 2 engine); (2) Repowering of an older coal-fired plant (Block 2 engine); (3) Gas-fired HAT cycle (Block 1 and 2 engines); (4) Integrated gasification HAT (Block 1 and 2 engines). Also under Phase I of the NGT Program, a conceptual design of the combustion system has been completed. An integrated approach to cycle optimization for improved combustor turndown capability has been employed. The configuration selected has the potential for achieving single digit NO{sub x}/CO emissions between 40 percent and 100 percent load conditions. A technology maturation plan for the combustion system has been proposed. Also, as a result of Phase I, ceramic vane technology will be incorporated into NGT designs and will require less cooling flow than conventional metallic vanes, thereby improving engine efficiency. A common 50 Hz and 60 Hz power turbine was selected due to the cost savings from eliminating a gearbox. A list of ceramic vane technologies has been identified for which the funding comes from DOE, NASA, the U.S. Air Force, and P&W.

William H. Day

2002-05-03T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

NEXT GENERATION TURBINE PROGRAM  

SciTech Connect

The Next Generation Turbine (NGT) Program's technological development focused on a study of the feasibility of turbine systems greater than 30 MW that offer improvement over the 1999 state-of-the-art systems. This program targeted goals of 50 percent turndown ratios, 15 percent reduction in generation cost/kW hour, improved service life, reduced emissions, 400 starts/year with 10 minutes to full load, and multiple fuel usage. Improvement in reliability, availability, and maintainability (RAM), while reducing operations, maintenance, and capital costs by 15 percent, was pursued. This program builds on the extensive low emissions stationary gas turbine work being carried out by Pratt & Whitney (P&W) for P&W Power Systems (PWPS), which is a company under the auspices of the United Technologies Corporation (UTC). This study was part of the overall Department of Energy (DOE) NGT Program that extends out to the year 2008. A follow-on plan for further full-scale component hardware testing is conceptualized for years 2002 through 2008 to insure a smooth and efficient transition to the marketplace for advanced turbine design and cycle technology. This program teamed the National Energy Technology Laboratory (NETL), P&W, United Technologies Research Center (UTRC), kraftWork Systems Inc., a subcontractor on-site at UTRC, and Multiphase Power and Processing Technologies (MPPT), an off-site subcontractor. Under the auspices of the NGT Program, a series of analyses were performed to identify the NGT engine system's ability to serve multiple uses. The majority were in conjunction with a coal-fired plant, or used coal as the system fuel. Identified also was the ability of the NGT system to serve as the basis of an advanced performance cycle: the humid air turbine (HAT) cycle. The HAT cycle is also used with coal gasification in an integrated cycle HAT (IGHAT). The NGT systems identified were: (1) Feedwater heating retrofit to an existing coal-fired steam plant, which could supply both heat and peaking power (Block 2 engine); (2) Repowering of an older coal-fired plant (Block 2 engine); (3) Gas-fired HAT cycle (Block 1 and 2 engines); (4) Integrated gasification HAT (Block 1 and 2 engines). Also under Phase I of the NGT Program, a conceptual design of the combustion system has been completed. An integrated approach to cycle optimization for improved combustor turndown capability has been employed. The configuration selected has the potential for achieving single digit NO{sub x}/CO emissions between 40 percent and 100 percent load conditions. A technology maturation plan for the combustion system has been proposed. Also, as a result of Phase I, ceramic vane technology will be incorporated into NGT designs and will require less cooling flow than conventional metallic vanes, thereby improving engine efficiency. A common 50 Hz and 60 Hz power turbine was selected due to the cost savings from eliminating a gearbox. A list of ceramic vane technologies has been identified for which the funding comes from DOE, NASA, the U.S. Air Force, and P&W.

William H. Day

2002-05-03T23:59:59.000Z

302

Architecting a plug-in based steam turbine design tool  

Science Conference Proceedings (OSTI)

At a leading manufacturer of equipment for power generation, the engineers currently design a steam turbine, a key component of a power plant, using a large number of disjoint legacy tools written mostly in Fortran; These tools encapsulate significant ... Keywords: dynamic graph, eclipse rcp, osgi, turbine engineering

Stefanos Zachariadis; Tim Cianchi

2011-05-01T23:59:59.000Z

303

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

E-Print Network (OSTI)

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

Cambridge, University of

304

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

E-Print Network (OSTI)

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

305

Stresa, Italy, 26-28 April 2006 A MICRO TURBINE DEVICE WITH ENHANCED  

E-Print Network (OSTI)

reported during test. 1. INTRODUCTION Micro gas turbine engine [1-2] is one of the promising solutions to provide high-density power source for microsystems. We are developing a silicon-based micro gas turbine in micro gas turbine engine, which will generate power output and drive the compressor. The critical

Paris-Sud XI, Université de

306

Recycling of Engine Serviced Superalloys  

Science Conference Proceedings (OSTI)

of gas turbine engines and other high temperature applications. Elements such ... processes and tight controls have limited the use of large amounts of available.

307

Engineering  

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

Engineering Engineering Lawrence Livermore National Laboratory Home Technologies Core Competencies Showcase Careers Partnerships About Advanced Manufacturing Developing high-performance materials, devices, components, and assemblies enabled by innovative design tools and novel manufacturing techniques Learn more Applied Electromagnetics Supporting the development of electromagnetic systems that are pervasive and paramount to the greater National Security community. Learn more Data Sciences Enabling better decisions through the development and application of state-of-the-art techniques in machine learning, statistics, and decision sciences Learn more Precision Engineering Embracing determinism to guide rigorous design, construction, and metrology of mechatronic systems, instruments, and manufactured components

308

Ceramic vane demonstration in an industrial turbine  

SciTech Connect

A DOE program with Allison Engine Co. will demonstrate ceramic vanes in an industrial turbine. First-stage ceramic vanes and metallic mounts are to be designed, fabricated, and operated in a short-term engine test (up to 50 hr). The vanes and mounts will then be retrofitted into an existing turbine for operation at a commercial site for up to 8000 hr. They have been designed. Thermal and stress analyses of the vanes have calculated acceptable fast fracture stress levels and probabilities of survival > 99.99% for turbine continuous power and emergency shutdown (thermal shock) conditions. Max calculated steady-state stress is 169 MPa at 1182 C, so currently available ceramics appear to provide acceptable fast fracture strengths for use in industrial turbines. Long-term materials test will evaluate the lifetimes and retained strength of ceramics at stress and temperature levels in the range calculated from the ceramic vane analyses. Results of these tests will support on which vane material will be used in the long duration turbine demonstration. A successful demonstration could provide a basis for incorporating first-stage ceramic vanes into current generation industrial turbines and also the introduction of ceramic airfoils into downstream rows of future high temperature Advanced Turbine System (ATS) engines.

Wenglarz, R.A.; Calcuttawala, S.M.; Pope, J.E.

1997-04-01T23:59:59.000Z

309

Spring 2009 Engineering Our Future  

E-Print Network (OSTI)

of whirring wind turbines JeffSammons The Energy Issue: Going Green Donovan Maddox Chair Created Cash Chair and Computer Engineering. Grid-connected wind turbines, solar power plants, and other renewable sources have, to install, maintain, and repair wind turbines and related equipment. The program offers Wind Technician

Zhang, Yuanlin

310

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

311

Advanced Control Design for Wind Turbines; Part I: Control Design, Implementation, and Initial Tests  

SciTech Connect

The purpose of this report is to give wind turbine engineers information and examples of the design, testing through simulation, field implementation, and field testing of advanced wind turbine controls.

Wright, A. D.; Fingersh, L. J.

2008-03-01T23:59:59.000Z

312

Electricity use by machine drives varies significantly by ...  

U.S. Energy Information Administration (EIA)

Greenhouse gas data, voluntary report- ing, electric power plant emissions. ... Fossil fuels may be used to drive turbines, reciprocating engines, ...

313

Electricity Generation in the Manufacturing Sector: A ...  

U.S. Energy Information Administration (EIA)

Technologies such as the combustion turbine, reciprocating engines, fuel cells, and ... wood chips, black liquor, or different forms of gas.

314

Single Rotor Turbine  

DOE Patents (OSTI)

A rotor for use in turbine applications has a centrifugal compressor having axially disposed spaced apart fins forming passages and an axial turbine having hollow turbine blades interleaved with the fins and through which fluid from the centrifugal compressor flows.

Platts, David A. (Los Alamos, NM)

2004-10-26T23:59:59.000Z

315

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

316

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

317

A Thermodynamics Based Model for Predicting Piston Engine Performance for Use in Aviation Vehicle Design .  

E-Print Network (OSTI)

??Advances in piston engine technology, coupled with high costs of turbine engines have led many general aviation manufacturers to explore the use of piston engines (more)

Highley, Justin L.

2004-01-01T23:59:59.000Z

318

Definition: Wind turbine | Open Energy Information  

Open Energy Info (EERE)

turbine turbine Jump to: navigation, search Dictionary.png Wind turbine A machine that converts wind energy to mechanical energy; typically connected to a generator to produce electricity.[1][2] View on Wikipedia Wikipedia Definition A wind turbine is a device that converts kinetic energy from the wind, also called wind energy, into mechanical energy in a process known as wind power. If the mechanical energy is used to produce electricity, the device may be called a wind turbine or wind power plant. If the mechanical energy is used to drive machinery, such as for grinding grain or pumping water, the device is called a windmill or wind pump. Similarly, it may be referred to as a wind charger when used for charging batteries. The result of over a millennium of windmill development and modern engineering,

319

Low thermal stress ceramic turbine nozzle  

DOE Patents (OSTI)

A turbine nozzle vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and being attached to conventional metallic components. The metallic components having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes an outer shroud and an inner shroud having a plurality of vanes therebetween. Each of the plurality of vanes have a device for heating and cooling a portion of each of the plurality of vanes. Furthermore, the inner shroud has a plurality of bosses attached thereto. A cylindrical member has a plurality of grooves formed therein and each of the plurality of bosses are positioned in corresponding ones of the plurality of grooves. The turbine nozzle vane assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the other component.

Glezer, Boris (Del Mar, CA); Bagheri, Hamid (San Diego, CA); Fierstein, Aaron R. (San Diego, CA)

1996-01-01T23:59:59.000Z

320

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

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


321

Energy Basics: Wind Turbines  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Energy Basics Renewable Energy Printable Version Share this resource Biomass Geothermal Hydrogen Hydropower Ocean Solar Wind Wind Turbines Wind Resources Wind Turbines...

322

ADVANCED TURBINE SYSTEM FEDERAL ASSISTANCE PROGRAM  

DOE Green Energy (OSTI)

Rolls-Royce Corporation has completed a cooperative agreement under Department of Energy (DOE) contract DE-FC21-96MC33066 in support of the Advanced Turbine Systems (ATS) program to stimulate industrial power generation markets. This DOE contract was performed during the period of October 1995 to December 2002. This final technical report, which is a program deliverable, describes all associated results obtained during Phases 3A and 3B of the contract. Rolls-Royce Corporation (formerly Allison Engine Company) initially focused on the design and development of a 10-megawatt (MW) high-efficiency industrial gas turbine engine/package concept (termed the 701-K) to meet the specific goals of the ATS program, which included single digit NOx emissions, increased plant efficiency, fuel flexibility, and reduced cost of power (i.e., $/kW). While a detailed design effort and associated component development were successfully accomplished for the 701-K engine, capable of achieving the stated ATS program goals, in 1999 Rolls-Royce changed its focus to developing advanced component technologies for product insertion that would modernize the current fleet of 501-K and 601-K industrial gas turbines. This effort would also help to establish commercial venues for suppliers and designers and assist in involving future advanced technologies in the field of gas turbine engine development. This strategy change was partly driven by the market requirements that suggested a low demand for a 10-MW aeroderivative industrial gas turbine, a change in corporate strategy for aeroderivative gas turbine engine development initiatives, and a consensus that a better return on investment (ROI) could be achieved under the ATS contract by focusing on product improvements and technology insertion for the existing Rolls-Royce small engine industrial gas turbine fleet.

Frank Macri

2003-10-01T23:59:59.000Z

323

Advanced Hydrogen Turbine Development  

DOE Green Energy (OSTI)

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

Joesph Fadok

2008-01-01T23:59:59.000Z

324

Fluid turbine  

SciTech Connect

A fluid turbine designed for increased power output includes an annular housing provided with a semi-spherical dome for directing incoming fluid flow to impinge on a plurality of rotor blades within the housing fixed to a vertical output shaft. An angle on the order of between 5 to 85/sup 0/, in the direction of rotation of the shaft, exists between the upper (Leading) and lower (Trailing) edges of each blade. The blades are manufactured from a plurality of aerodynamically-shaped, radially spaced ribs covered with a skin. The leading edge of each rib is curved, while the trailing edge is straight. The straight edge of the ribs in each blade approach a vertical plane through the vertical axis of the housing output shaft as the ribs progress radially inwardly towards the output shaft. The housing has fluid exit passages in its base so that deenergized fluid can be quickly flushed from the housing by the downwardly directed flow in combination with the novel blade configuration, which acts as a screw or force multiplier, to expel deenergized fluid. The airfoil shaped ribs also provide the blades with a contour for increasing the fluid velocity on the underside of the blades adjacent the fluid exit passage to aid in expelling the deenergized air while providing the turbine with both impulse and axial-flow, fluid impingement on the blades, resulting in a force vector of increased magnitude. A downwardly directed, substantially semi-cylindrical deflector frame connected to the housing blocks the path of flow of ambient fluid to create a low pressure area beneath the base to aid in continuously drawing fluid into the housing at high velocity to impinge on the rotor blades. The increased flow velocity and force on the blades along with the enhanced removal of deenergized fluid results in increased power output of the turbine.

Lebost, B.A.

1980-11-18T23:59:59.000Z

325

Advanced Turbine Technology (ATTAP) Applications Project. 1992 Annual report  

DOE Green Energy (OSTI)

ATTAP activities during the past year included reference powertrain design (RPD) updates, test-bed engine design and development, ceramic component design, materials and component characterization, ceramic component development and fabrication, ceramic component rig testing, and test-bed engine fabrication and testing. RPD revisions included updating the baseline vehicle as well as the turbine RPD. Comparison of major performance parameters shows that the turbine engine installation exceeds critical fuel economy, emissions, and performance goals, and meets overall ATTAP objectives.

NONE

1993-12-01T23:59:59.000Z

326

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

327

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

328

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

329

NETL: Releases & Briefs - Laser ignition for lean-burn engines  

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

Energy Technology Laboratory have successfully operated a laser-spark lean-burn natural gas reciprocating engine. Development of lean-burn engines is driven by demand for higher...

330

Applications: Operational wind turbines  

E-Print Network (OSTI)

Capability Applications: Operational wind turbines Benefits: Optimize wind turbine performance Summary: Researchers at the Los Alamos National Laboratory (LANL) Intelligent Wind Turbine Program are developing a multi-physics modeling approach for the analysis of wind turbines in the presence of realistic

331

MHK Technologies/Open Centre Turbine | Open Energy Information  

Open Energy Info (EERE)

Turbine Turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Open Centre Turbine.jpg Technology Profile Primary Organization OpenHydro Group Limited Project(s) where this technology is utilized *MHK Projects/OpenHydro Alderney Channel Islands UK *MHK Projects/OpenHydro Bay of Fundy Nova Scotia CA Technology Resource Click here Current/Tidal Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering Technology Description The Open-Centre Turbine is designed to be deployed directly on the seabed. The Open-Centre Turbine is a horizontal axis turbine with a direct-drive, permanent magnetic generator that has a slow-moving rotor and lubricant-free operation, which decreases maintenance and minimizes risk to marine life.

332

NETL: News Release - Enabling Turbine Technologies for Hydrogen Fuels  

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

September 8, 2005 September 8, 2005 Enabling Turbine Technologies for Hydrogen Fuels Turbine Program Advances Ultra-Clean, Coal-Based Systems WASHINGTON, DC - The Department of Energy's Office of Fossil Energy Turbine Technology R&D Program was recently expanded with the selection of 10 new projects valued at $130 million. The new program will advance turbines and turbine subsystems for integrated gasification combined cycle (IGCC) power plants, and address the use of hydrogen in small-scale turbines for industrial applications. Resulting technologies will operate cleanly and efficiently when fueled with coal-derived hydrogen or synthesis gas. Turbines can generate electrical power on a large scale-in central power stations sized 250 megawatts and larger-or on a small scale-in local, industrial power systems sized 1-100 megawatts. Small-scale systems also produce mechanical power for jet engines, compressors, heating systems, and other applications.

333

NETL: Turbines - Research&Development  

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

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

334

Direct Fired Reciprocating Engine and Bottoming High Temperature...  

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

exhaust is split between fuel feeds and air feeds to the high temperature fuel cell. NOX reduction can be achieved using an autothermal reformer. By hybridizing the production...

335

Field verification program for small wind turbines  

DOE Green Energy (OSTI)

In 1999 Windward Engineering (Windward) was awarded a Cooperative Agreement under the Field Verification Program with the Department of Energy (DOE) to install two Whisper H40 wind turbines, one at the NREL National Wind Technology Center (NWTC) and one at a test site near Spanish Fork, Utah. After installation, the turbine at the NWTC was to be operated, maintained, and monitored by NREL while the turbine in Spanish Fork was to be administered by Windward. Under this award DOE and Windward defined the primary objectives of the project as follows: (1) Determine and demonstrate the reliability and energy production of a furling wind turbine at a site where furling will be a very frequent event and extreme gusts can be expected during the duration of the tests. (2) Make engineering measurements and conduct limited computer modeling of the furling behavior to improve the industry understanding of the mechanics and nature of furling. We believe the project has achieved these objectives. The turbine has operated for approximately three and a half years. We have collected detailed engineering data approximately 75 percent of that time. Some of these data were used in an ADAMS model validation that highlighted the accuracies and inaccuracies of the computer modeling for a passively furling wind turbine. We also presented three papers at the American Wind Energy Association (AWEA) Windpower conferences in 2001, 2002, and 2003. These papers addressed the following three topics: (a) general overview of the project [1], (b) furling operation during extreme wind events [2], and (c) extrapolation of extreme (design) loads [3]. We believe these papers have given new insight into the mechanics and nature of furling and have set the stage for future research. In this final report we will highlight some of the more interesting aspects of the project as well as summarize the data for the entire project. We will also present information on the installation of the turbines as well as the findings from the post-test inspection of the turbine.

Windward Engineering, LLC

2003-11-30T23:59:59.000Z

336

turbine | OpenEI Community  

Open Energy Info (EERE)

turbine Home Future of Condition Monitoring for Wind Turbines Description: Research into third party software to aid in the development of better CMS in order to raise turbine...

337

Flame Response Mechanisms and their Interaction in a Lean Premixed Swirl-Stabilized Gas Turbine Combustor.  

E-Print Network (OSTI)

??To satisfy increasingly stringent environmental regulations, gas turbine engines are run in a lean premixed mode. Unfortunately, operating in this mode greatly increases the flames (more)

Jones, Brian

2011-01-01T23:59:59.000Z

338

ENDWALL SHAPE MODIFICATION USING VORTEX GENERATORS AND FENCES TO IMPROVE GAS TURBINE COOLING AND EFFECTIVENESS.  

E-Print Network (OSTI)

??The gas turbine is one of the most important parts of the air-breathing jet engine. Hence, improving its efficiency and rendering it operable under high (more)

Gokce, Zeki

2012-01-01T23:59:59.000Z

339

Local heat transfer and film effectiveness of a film cooled gas turbine blade tip.  

E-Print Network (OSTI)

??Gas turbine engines due to high operating temperatures undergo severe thermal stress and fatigue during operation. Cooling of these components is a very important issue (more)

Adewusi, Adedapo Oluyomi

2012-01-01T23:59:59.000Z

340

Public Health Benefits of End-Use Electrical Energy Efficiency in California: An Exploratory Study  

E-Print Network (OSTI)

Tulare Gas Fueled Reciprocating Cogen Engine Gas TurbineGas Turbine Combined Cycle Steam Turbine Cogen Not Cogen NotGas Kern Natural Gas/Eor Gas Turbine Kern Ag. & Woodwaste

McKone, Thomas E.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

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

342

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

343

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

344

A Review of "Small-Scale Wind Turbines Policy Perspectives and  

E-Print Network (OSTI)

ERG/200607 A Review of "Small-Scale Wind Turbines ­ Policy Perspectives and Recommendations of Engineering Mathematics at Dalhousie University. #12;Hughes-Long: A Review of Small-Scale Wind Turbines proposed changes to their municipal Bylaws to allow the installation of "small-scale" wind turbines (i

Hughes, Larry

345

Model and Seismic Analysis of Large-scale Wind Turbine Tower Structure  

Science Conference Proceedings (OSTI)

The working condition of wind turbine tower structure with a massive engine room and revolving wind wheels is very complex. The paper simplify the wind turbine tower model with finite element analysis software --ANSYS, completed modal analysis firstly, ... Keywords: wind turbine tower, model analysis, resonance, time-history analysis, dynamic

Xiang Liu; Jiangtao Kong

2012-05-01T23:59:59.000Z

346

PROBLMES POSS POUR L'APPLICATION DES ALLIAGES DE NIOBIUM AUX AUBES DE TURBINE  

E-Print Network (OSTI)

the hottest sections of gas turbine engines features an interesting answer to problems introduced513 PROBL?MES POS?S POUR L'APPLICATION DES ALLIAGES DE NIOBIUM AUX AUBES DE TURBINE par G. GAUJE et refroidissement interne par convection s'applique en général aux aubes fixes et mobiles de 1 er étage de turbine

Paris-Sud XI, Université de

347

Status and Prognosis for Alternative Engine Materials  

Science Conference Proceedings (OSTI)

Nickel-base and to some extent cobalt-base superalloys have been the primary materials in the hot zone of gas turbine engines since their commer- cialization.

348

Stirling engine with pressurized crankcase  

DOE Patents (OSTI)

A two piston Stirling engine wherein the pistons are coupled to a common crankshaft via bearing means, the pistons include pad means to minimize friction between the pistons and the cylinders during reciprocation of the pistons, means for pressurizing the engine crankcase, and means for cooling the crankshaft and the bearing means eliminating the need for oil in the crankcase.

Corey, John A. (Melrose, NY)

1988-01-01T23:59:59.000Z

349

Wind Turbines | Department of Energy  

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

Turbines Wind Turbines July 30, 2013 - 2:58pm Addthis Energy 101: Wind Turbines Basics This video explains the basics of how wind turbines operate to produce clean power from an...

350

Low pressure turbine installation  

SciTech Connect

Low-pressure turbine installation is described comprising a casing, at least two groups of turbine stages mounted in said casing, each turbine stage having blades so arranged that a flow of steam passes through the respective turbine stages in contraflow manner, partition means in said casing for separating the opposed final stages of said turbine stages from each other, and steam exhausting means opened in the side walls of said casing in a direction substantially perpendicular to the axis of said turbine, said steam exhausting means being connected to condensers.

Iizuka, N.; Hisano, K.; Ninomiya, S.; Otawara, Y.

1976-08-10T23:59:59.000Z

351

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

352

AFCEE MMR Turbines | Open Energy Information  

Open Energy Info (EERE)

AFCEE MMR Turbines AFCEE MMR Turbines Jump to: navigation, search Name AFCEE MMR Turbines Facility AFCEE MMR Turbines Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner AFCEE Developer Air Force Center for Engineering and the Environment Energy Purchaser Distributed generation - net metered Location Camp Edwards Sandwich MA Coordinates 41.75754733°, -70.54557323° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.75754733,"lon":-70.54557323,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

353

Memorandum, Health and Safety Training Reciprocity Program - July 12, 2013  

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

Memorandum, Health and Safety Training Reciprocity Program - July Memorandum, Health and Safety Training Reciprocity Program - July 12, 2013 Memorandum, Health and Safety Training Reciprocity Program - July 12, 2013 July 12, 2013 The HSS reciprocity program is designed to evaluate training within specific topics and validate that training courses conform to the elements required for DOE training, resulting in a recommendation for reciprocity. The program involves an independent evaluation of training, against structured criteria concurred upon by HSS, to determine the adequacy of a given course against DOE regulatory expectations. The evaluation provides sufficient documentation for officials at other DOE sites to decide if the course is acceptable to them for reciprocity with the addition of any necessary site-specific "gap" training.

354

Memorandum, Health and Safety Training Reciprocity Program - July 12, 2013  

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

Health and Safety Training Reciprocity Program - July Health and Safety Training Reciprocity Program - July 12, 2013 Memorandum, Health and Safety Training Reciprocity Program - July 12, 2013 July 12, 2013 The HSS reciprocity program is designed to evaluate training within specific topics and validate that training courses conform to the elements required for DOE training, resulting in a recommendation for reciprocity. The program involves an independent evaluation of training, against structured criteria concurred upon by HSS, to determine the adequacy of a given course against DOE regulatory expectations. The evaluation provides sufficient documentation for officials at other DOE sites to decide if the course is acceptable to them for reciprocity with the addition of any necessary site-specific "gap" training.

355

Clustering in large networks does not promote upstream reciprocity  

E-Print Network (OSTI)

Upstream reciprocity (also called generalized reciprocity) is a putative mechanism for cooperation in social dilemma situations with which players help others when they are helped by somebody else. It is a type of indirect reciprocity. Although upstream reciprocity is often observed in experiments, most theories suggest that it is operative only when players form short cycles such as triangles, implying a small population size, or when it is combined with other mechanisms that promote cooperation on their own. An expectation is that real social networks, which are known to be full of triangles and other short cycles, may accommodate upstream reciprocity. In this study, I extend the upstream reciprocity game proposed for a directed cycle by Boyd and Richerson to the case of general networks. The model is not evolutionary and concerns the conditions under which the unanimity of cooperative players is a Nash equilibrium. I show that an abundance of triangles or other short cycles in a network does little to prom...

Masuda, Naoki

2011-01-01T23:59:59.000Z

356

ATTAP: Advanced Turbine Technology Applications Project. Annual report, 1991  

DOE Green Energy (OSTI)

Purpose of ATTAP is to bring the automotive gas turbine engine to a technology state at which industry can make commercialization decisions. Activities during the past year included test-bed engine design and development, ceramic component design, materials and component characterization, ceramic component process development and fabrication, ceramic component rig testing, and test-bed engine fabrication and testing.

Not Available

1992-12-01T23:59:59.000Z

357

Turbine Surface Degradation with Service and Its Effects on Performanc...  

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

(3-D) Tom Shih (2-D) Iowa State University IOWA STATE UNIVERSITY Aerospace Engineering Turbine Surface Degradation with Service and Its Effects on Performance - 2-D3-D CFD...

358

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...

359

The Microstructure Prediction of Alloy 720LI for Turbine Disk ...  

Science Conference Proceedings (OSTI)

Applications, Supemhoys 1996, (1996), 697-703. 3. H.Hattori et al., Evaluation of PA4 U720 for Gas Turbine. Engine Disk Application, 2hpxalloys 1996, (1996) ...

360

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

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

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

362

Fish Passage Assessment of an Advanced Hydropower Turbine and Conventional Turbine Using Blade-strike Modeling  

Science Conference Proceedings (OSTI)

In the Columbia and Snake River basins, several species of Pacific salmon were listed under the Endangered Species Act of 1973 due to significant declines of fish population. Dam operators and design engineers are thus faced with the task of making those hydroelectric facilities more ecologically friendly through changes in hydro-turbine design and operation. Public Utility District No. 2 of Grant County, Washington, applied for re-licensing from the U.S. Federal Energy Regulatory Commission to replace the 10 turbines at Wanapum Dam with advanced hydropower turbines that were designed to increase power generation and improve fish passage conditions. We applied both deterministic and stochastic blade-strike models to the newly installed turbine and an existing turbine. Modeled probabilities were compared to the results of a large-scale live fish survival study and a sensor fish study under the same operational parameters. Overall, injury rates predicted by the deterministic model were higher than experimental rates of injury while those predicted by the stochastic model were in close agreement with experiment results. Fish orientation at the time of entry into the plane of the leading edges of the turbine runner blades was an important factor contributing to uncertainty in modeled results. The advanced design turbine had slightly higher modeled injury rates than the existing turbine design; however, there was no statistical evidence that suggested significant differences in blade-strike injuries between the two turbines and the hypothesis that direct fish survival rate through the advanced hydropower turbine is equal or better than that through the conventional turbine could not be rejected.

Deng, Zhiqun; Carlson, Thomas J.; Dauble, Dennis D.; Ploskey, Gene R.

2011-01-04T23:59:59.000Z

363

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

364

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

365

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

366

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

367

Wind Turbine Maintenance Guide  

Science Conference Proceedings (OSTI)

This guideline provides component-level information regarding the maintenance of major components associated with a wind turbine. It combines recommendations offered by major equipment manufacturers with lessons learned from owner/operators of wind turbine facilities.

2012-06-29T23:59:59.000Z

368

Energy Basics: Wind Turbines  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Photo of a crane lifting the blades onto a wind turbine that reads 'U.S. Department of Energy, NREL.' You can learn more about horizontal axis turbines from the EERE Wind Program's...

369

Stationary turbine component with laminated skin  

DOE Patents (OSTI)

A stationary turbine engine component, such as a turbine vane, includes a internal spar and an external skin. The internal spar is made of a plurality of spar laminates, and the external skin is made of a plurality of skin laminates. The plurality of skin laminates interlockingly engage the plurality of spar laminates such that the external skin is located and held in place. This arrangement allows alternative high temperature materials to be used on turbine engine components in areas where their properties are needed without having to make the entire component out of such material. Thus, the manufacturing difficulties associated with making an entire component of such a material and the attendant high costs are avoided. The skin laminates can be made of advanced generation single crystal superalloys, intermetallics and refractory alloys.

James, Allister W. (Orlando, FL)

2012-08-14T23:59:59.000Z

370

A small pelton turbine for steam turbocharger  

SciTech Connect

The use of exhaust gas turbocharger for internal combustion engines is usually accompanied by mechanical loss. This loss is due to the raise of exhaust gas back pressure with the increase of engine speed. This back pressure prevents the discharge of the exhaust gas from the engine and causes mechanical loss. To avoid this undesirable phenomenon, a Clausius-Rankine cycle is used. In this case the thermal energy in the exhaust gas is used to vaporise water in a steam generator. The generated steam expands in a steam turbocharger which supercharges the engine. A small Pelton steam turbine has been designed and fabricated. The expected output for this small turbine is 10 kW. A computer program has been prepared to estimate the values of optimum cycle parameters.

Rautenberg, M.; Abdelkader, M.; Malobabic, M.; Mobarak, A.

1984-08-01T23:59:59.000Z

371

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

372

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

373

The wind turbine  

Science Conference Proceedings (OSTI)

In this paper we present the modeling of a wing turbine, using the Euler Lagrange method and circuits theory. We get the mathematical equation (modeling) that describes the wind turbine and we simulate it using the mathlab program. Keywords: modeling, simulation, wind turbine

Jos De Jess Rubio Avila; Andrs Ferreira Ramrez; Genaro Deloera Flores; Martn Salazar Pereyra; Fernando Baruch Santillanes Posada

2008-07-01T23:59:59.000Z

374

MHK Technologies/GreenFlow Turbines | Open Energy Information  

Open Energy Info (EERE)

GreenFlow Turbines GreenFlow Turbines < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage GreenFlow Turbines.jpg Technology Profile Primary Organization Gulfstream Technologies Technology Resource Click here Current Technology Type Click here Cross Flow Turbine Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description Targeted at commercial sites with large water flow volume These hydro turbines range in size from 50kW to 750kW with many sites able to house multiple units Technology Dimensions Device Testing Date Submitted 55:53.9 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/GreenFlow_Turbines&oldid=681584

375

MHK Technologies/Deep Gen Tidal Turbines | Open Energy Information  

Open Energy Info (EERE)

Deep Gen Tidal Turbines Deep Gen Tidal Turbines < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Deep Gen Tidal Turbines.jpg Technology Profile Primary Organization Tidal Generation Ltd Project(s) where this technology is utilized *MHK Projects/Tidal Generation Ltd EMEC Technology Resource Click here Current/Tidal Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering Technology Description The DEEP Gen 1 MW fully submerged tidal turbine best exploits resources in depths 30m The horizontal axis turbine is inexpensive to construct and easy to install due to the lightweight 80 tons MW support structure allows rapid removal and replacement of powertrains enabling safe maintenance in a dry environment and is located out of the wave zone for improved survivability

376

MHK Technologies/Davidson Hill Venturi DHV Turbine | Open Energy  

Open Energy Info (EERE)

MHK Technologies/Davidson Hill Venturi DHV Turbine MHK Technologies/Davidson Hill Venturi DHV Turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Davidson Hill Venturi DHV Turbine.jpg Technology Profile Primary Organization Tidal Energy Pty Ltd Project(s) where this technology is utilized *MHK Projects/QSEIF Grant Sea Testing *MHK Projects/Stradbroke Island *MHK Projects/Tidal Energy Project Portugal Technology Resource Click here Current/Tidal Technology Type Click here Cross Flow Turbine Technology Readiness Level Click here TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering Technology Description The Davidson Hill Venturi DHV Turbine is a horizontal axis turbine that utilizes a Venturi structure in front of the intake The device can be mounted on the seabed or can float slack moored in a tidal stream

377

NREL: Wind Research - SWIFT Wind Turbine Testing and Results  

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

SWIFT Wind Turbine Testing and Results SWIFT Wind Turbine Testing and Results The SWIFT wind turbine. Text Version As part of the National Renewable Energy Laboratory and U.S. Department of Energy (NREL/DOE) Independent Testing project, NREL is testing the SWIFT small wind turbine at the National Wind Technology Center (NWTC). The competitive grant was awarded to Cascade Engineering. The SWIFT is a 1-kilowatt (kW), five-bladed with outer ring, horizontal-axis upwind small wind turbine. The turbine's rotor diameter is 2 meters, and its hub height is 13.72 meters. The SWIFT uses a single-phase permanent-magnet generator rated at 1 kW grid connected through an inverter at 240 volts AC. Testing Summary Supporting data and explanations for data provided in this table will be provided in the final reports. Data presented are preliminary and subject

378

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

379

NETL: Turbines - Oxy-Fuel Turbines  

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

Oxy-Fuel Turbines Oxy-Fuel Turbines Oxy-fuel combustion potentially can be used in plants based on both conventional and advanced technology. Studies have shown that plants equipped with oxy-fuel systems could reach nominal efficiencies in the 30 percent range with today's steam turbines when fueled with natural gas and when capturing the CO2. With anticipated advances in gasification, oxygen separation, and steam turbine technology, plants using oxy-fuel systems are expected to achieve efficiencies in the mid-40 percent range, with near-100 percent CO2 capture and near-zero NOx emissions. By 2012: In the near-term, efforts are focused on the development of oxy- fuel turbine and combustor technologies for highly efficient (50-60 percent), near-zero emissions, coal-based power systems

380

MHK Technologies/The Davis Hydro Turbine | Open Energy Information  

Open Energy Info (EERE)

Hydro Turbine Hydro Turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage The Davis Hydro Turbine.jpg Technology Profile Primary Organization Blue Energy Technology Resource Click here Current Technology Type Click here Cross Flow Turbine Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The Blue Energy Ocean Turbine acts as a highly efficient underwater vertical axis windmill Four fixed hydrofoil blades of the turbine are connected to a rotor that drives an integrated gearbox and electrical generator assembly The turbine is mounted in a durable concrete marine caisson that anchors the unit to the ocean floor and the structure directs flow through the turbine further concentrating the resource supporting the coupler gearbox and generator above the rotor These sit above the surface of the water and are readily accessible for maintenance and repair The hydrofoil blades employ a hydrodynamic lift principal that causes the turbine foils to move proportionately faster than the speed of the surrounding water Computer optimized cross flow design ensures that the rotation of the turbine is unidirectional on both the ebb and flow of the tide

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Turbine Imaging Technology Assessment  

DOE Green Energy (OSTI)

The goal of this project was to identify and evaluate imaging alternatives for observing the behavior of juvenile fish within an operating Kaplan turbine unit with a focus on methods to quantify fish injury mechanisms inside an operating turbine unit. Imaging methods are particularly needed to observe the approach and interaction of fish with turbine structural elements. This evaluation documents both the opportunities and constraints for observing juvenile fish at specific locations during turbine passage. The information may be used to acquire the scientific knowledge to make structural improvements and create opportunities for industry to modify turbines and improve fish passage conditions.

Moursund, Russell A.; Carlson, Thomas J.

2004-12-31T23:59:59.000Z

382

Geothermal turbine installation  

SciTech Connect

A geothermal turbine intallation in which high-pressure steam is separated from geothermal steam, which is a mixture of steam and water, with the high pressure steam connected to a high pressure turbine. Low pressure steam produced by flashing the hot water component of the geothermal steam is introduced to a low pressure turbine which is constructed and operates independently of the high pressure turbine. The discharge steam from the high pressure turbine is introduced to a steam condenser operating at a low vacuum while discharge steam from the low pressure turbine is introduced into a steam condenser operating at a high vacuum. The cooling water system of the high and low pressure condensers are connected in series with one another. A maximum power increase is obtained if the flow rates of the high and low pressure steams at the extraction ports of the high and low pressure turbines are made substantially equal to one another.

Nishioka, R.

1983-01-04T23:59:59.000Z

383

Steam turbine plant  

SciTech Connect

A system for regulating the rate of closing of the turbine intake valve of a steam turbine plant is disclosed. A steam turbine is supplied from a steam generator through a turbine intake valve. A branch line conducts the steam to a bypass valve which is normally closed. In the event of conditions making it necessary to close the turbine intake valve rapidly, a regulator is provided to control the rate of closing of the turbine intake valve and the opening of the bypass valve so that the pressure conditions in the steam generator do not exceed the limits established by the manufacturer. Pressure measuring instruments are placed in the system to sense the pressure immediately upstream from the turbine intake valve and the bypass valve as well as the initial steam supply pressure. These pressure signals are transmitted to a computer which produces a control signal in accordance with predetermined conditions.

Skala, K.

1981-06-09T23:59:59.000Z

384

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

385

Proposed Renewal of the Harvard/MIT DOE GTL Systems Biology Center 2007-2012  

E-Print Network (OSTI)

systems, thermodynamic cycles, combustion and thermochemical analysis, reciprocating engines, gas turbine-time simulations. Emphasizes developing effective interactive media programs for all engineering disciplines

Church, George M.

386

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

387

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

388

Wind Turbines Under Atmospheric Icing Conditions - Ice Accretion Modeling, Aerodynamics, and Control Strategies for Mitigating Performance Degradation.  

E-Print Network (OSTI)

??This thesis presents a combined engineering methodology of ice accretion, airfoil data, and rotor performance analysis of wind turbines subject to moderate atmospheric icing conditions. (more)

Brillembourg, Dwight

2013-01-01T23:59:59.000Z

389

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

390

Multi-pass cooling for turbine airfoils  

SciTech Connect

An airfoil for a turbine vane of a gas turbine engine. The airfoil includes an outer wall having pressure and suction sides, and a radially extending cooling cavity located between the pressure and suction sides. A plurality of partitions extend radially through the cooling cavity to define a plurality of interconnected cooling channels located at successive chordal locations through the cooling cavity. The cooling channels define a serpentine flow path extending in the chordal direction. Further, the cooling channels include a plurality of interconnected chambers and the chambers define a serpentine path extending in the radial direction within the serpentine path extending in the chordal direction.

Liang, George (Palm City, FL)

2011-06-28T23:59:59.000Z

391

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

392

Steam Turbine Cogeneration  

E-Print Network (OSTI)

Steam turbines are widely used in most industrial facilities because steam is readily available and steam turbine is easy to operate and maintain. If designed properly, a steam turbine co-generation (producing heat and power simultaneously) system can increase energy efficiency, reduce air emissions and qualify the equipment for a Capital Cost tax Allowance. As a result, such a system benefits the stakeholders, the society and the environment. This paper describes briefly the types of steam turbine classified by their conditions of exhaust and review quickly the fundamentals related to steam and steam turbine. Then the authors will analyze a typical steam turbine co-generation system and give examples to illustrate the benefits of the System.

Quach, K.; Robb, A. G.

2008-01-01T23:59:59.000Z

393

Mechanical Engineering Department Seminar Series  

E-Print Network (OSTI)

Abstract: Gear vibration is a major concern in helicopters, wind turbines, cars, aircraft engines, heavy, Ford, Sikorsky, Boeing, and Mark IV Automotive. He has given over 60 invited and keynote lectures

Papalambros, Panos

394

Advanced Turbine Systems program  

SciTech Connect

Allison draws the following preliminary conclusions from this preliminary design effort: (1) All cycles investigated require a high temperature turbine capability to be developed under ATS. (2) The HAT and intercooled chemical recuperation cycles compete in only a narrow sector of the industrial engine market. This is the result of the complexity and water usage of the HAT cycle and the limitation of the chemical recuperation cycle to applications where natural gas is readily available. (3) From a cycle point of view, the ICR and chemical recuperation cycles are similar. Both optimize at fairly low compressor pressure ratios ({approximately}15) because both want high temperature in the exhaust to optimize the recuperation process. Excess steam production with the chemical recuperation process makes it somewhat doubtful that the two recuperation processes are interchangeable from a hardware point of view. Allison intends to perform a global optimization on this cycle during Phase 2 of ATS. (4). There appears to be no substitute for the simple cycle with steam generation in the cogen-steam market since steam is, by definition, a valuable product of the cycle.

Wilkes, C.; Mukavetz, D.W.; Knickerbocker, T.K.; Ali, S.A.

1993-11-01T23:59:59.000Z

395

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

396

Wind turbine | Open Energy Information  

Open Energy Info (EERE)

turbine turbine Jump to: navigation, search Dictionary.png Wind turbine: A machine that converts wind energy to mechanical energy; typically connected to a generator to produce electricity. Other definitions:Wikipedia Reegle Contents 1 Types of Wind Turbines 1.1 Vertical Axis Wind Turbines 1.2 Horizontal Axis Wind Turbines 2 Wind Turbine Sizes 3 Components of a Wind Turbine 4 References Types of Wind Turbines There are two basic wind turbine designs: those with a vertical axis (sometimes referred to as VAWTs) and those with a horizontal axis (sometimes referred to as HAWTs). There are several manufacturers of vertical axis turbines, but they have not penetrated the "utility scale" (100 kW capacity and larger) market to the same degree as horizontal axis turbines.[1]

397

Ten years with turbine metering  

SciTech Connect

The operation and performance experience in using 110 turbine meters to monitor the gas flow in turbines used on natural gas pipelines are discussed. Information is included on turbine meter selection, installation, calibration, performance testing, failures, and maintenance. (LCL)

Judd, H.C.

1980-01-01T23:59:59.000Z

398

Steam Turbine Developments  

Science Conference Proceedings (OSTI)

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

399

Hermetic turbine generator  

DOE Patents (OSTI)

A Rankine cycle turbine drives an electric generator and a feed pump, all on a single shaft, and all enclosed within a hermetically sealed case. The shaft is vertically oriented with the turbine exhaust directed downward and the shaft is supported on hydrodynamic fluid film bearings using the process fluid as lubricant and coolant. The selection of process fluid, type of turbine, operating speed, system power rating, and cycle state points are uniquely coordinated to achieve high turbine efficiency at the temperature levels imposed by the recovery of waste heat from the more prevalent industrial processes.

Meacher, John S. (Ballston Lake, NY); Ruscitto, David E. (Ballston Spa, NY)

1982-01-01T23:59:59.000Z

400

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, Synnve Mangerud

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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

Economical Condensing Turbines?  

E-Print Network (OSTI)

Steam turbines have long been used at utilities and in industry to generate power. There are three basic types of steam turbines: condensing, letdown and extraction/condensing. Letdown turbines reduce the pressure of the incoming steam to one or more pressures and generate power very efficiently, assuming that all the letdown steam has a use. Two caveats: Letdown turbines produce power based upon steam requirements and not based upon power requirements, and if all the steam letdown does not have a use, letdown turbines can become a very expensive way of producing electric power. Condensing turbines have the ability to handle rapid swings in electrical load. Unfortunately, they can only condense a small percentage of the steam, usually less than 14%. Therefore only a small percent of the heat of condensation is available for their use. Also equipment must be used to condense the remaining steam below atmospheric pressure. Extraction/condensing turbines both extract steam at a useful temperature and pressure and then condense the remainder of the steam. These units have the ability to load follow also. They are often used in concert with gas turbines to produce the balance of electrical power and to keep a electric self generator from drawing electrical power from the grid. The method for analyzing the cost of the condensing steam produced power is exactly the same in all cases. This paper will attempt to provide a frame work for preliminary economic analysis on electric power generation for condensing steam turbines.

Dean, J. E.

1997-04-01T23:59:59.000Z

402

NETL: Turbines - UTSR Projects  

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

3 Syngas Particulate Deposition and Erosion at the Leading Edge of a Turbine Blade with Film Cooling Virginia Tech Danesh Tafti Project Dates: 812007 - 9302010 Area of...

403

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

404

Meteorological aspects of siting large wind turbines  

DOE Green Energy (OSTI)

This report, which focuses on the meteorological aspects of siting large wind turbines (turbines with a rated output exceeding 100 kW), has four main goals. The first is to outline the elements of a siting strategy that will identify the most favorable wind energy sites in a region and that will provide sufficient wind data to make responsible economic evaluations of the site wind resource possible. The second is to critique and summarize siting techniques that were studied in the Department of Energy (DOE) Wind Energy Program. The third goal is to educate utility technical personnel, engineering consultants, and meteorological consultants (who may have not yet undertaken wind energy consulting) on meteorological phenomena relevant to wind turbine siting in order to enhance dialogues between these groups. The fourth goal is to minimize the chances of failure of early siting programs due to insufficient understanding of wind behavior.

Hiester, T.R.; Pennell, W.T.

1981-01-01T23:59:59.000Z

405

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

406

Distributed Generation Market Study: Advanced Turbine System Program  

Science Conference Proceedings (OSTI)

The ultra high efficiency, environmental superiority, and cost competitiveness of advanced turbine systems (ATSs) makes them attractive candidates for use in the near future in distributed generation applications. This study found that ATS engines with the cost and performance characteristics provided by Allison Engine Company (Allison) could have a significant regional market in the 2000-2005 time period.

1999-03-10T23:59:59.000Z

407

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

408

MHK Technologies/Wells Turbine for OWC | Open Energy Information  

Open Energy Info (EERE)

Turbine for OWC Turbine for OWC < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Wells Turbine for OWC.png Technology Profile Primary Organization Voith Hydro Wavegen Limited Project(s) where this technology is utilized *MHK Projects/Siadar Technology Resource Click here Current/Tidal Technology Type Click here Cross Flow Turbine Technology Readiness Level Click here TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering Technology Description From Brochure Wells turbine is a fixed pitch machine with only one direction of rotation Therefore the rotor is symeteric with respect to the rotation plane Technology Dimensions Device Testing Date Submitted 10/8/2010 << Return to the MHK database homepage

409

MHK Technologies/Horizontal Axis Logarithmic Spiral Turbine | Open Energy  

Open Energy Info (EERE)

Horizontal Axis Logarithmic Spiral Turbine Horizontal Axis Logarithmic Spiral Turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Technology Profile Primary Organization Golden Turbines LLC Technology Resource Click here Current Technology Type Click here Axial Flow Turbine Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description A Horizontal axis Water turbine following the logarithmic spiral to generate clean electric energy from slow moving currents like rivers or ocean currents and with least impact on marine life and the environment because it doesn t require a damn or building huge structures Technology Dimensions Device Testing Date Submitted 36:09.5 << Return to the MHK database homepage

410

Real time wind turbine simulator.  

E-Print Network (OSTI)

??A novel dynamic real-time wind turbine simulator (WTS) is developed in this thesis, which is capable of reproducing dynamic behavior of real wind turbine. The (more)

Gong, Bing

2007-01-01T23:59:59.000Z

411

NETL: Turbine Projects - Efficiency Improvement  

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

Efficiency Improvemenet Turbine Projects Efficiency Improvemenet Advanced Hot Section Materials and Coatings Test Rig DataFact Sheets System Study for Improved Gas Turbine...

412

Training Reciprocity Achieves Greater Consistency, Saves Time and Money for  

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

Training Reciprocity Achieves Greater Consistency, Saves Time and Training Reciprocity Achieves Greater Consistency, Saves Time and Money for Idaho, Other DOE Sites Training Reciprocity Achieves Greater Consistency, Saves Time and Money for Idaho, Other DOE Sites November 26, 2013 - 12:00pm Addthis IDAHO FALLS, Idaho - Contracting companies supporting EM's cleanup program at the Idaho site volunteered to be among the first to use a new DOE training reciprocity program designed to bring more consistency to health and safety training across the complex, reduce redundancy and realize savings and other efficiencies. The DOE Office of Health, Safety and Security (HSS) program is meant to eliminate the need for Department employees and contractors to take redundant training when they move among multiple sites in the complex.

413

Training Reciprocity Achieves Greater Consistency, Saves Time and Money for  

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

Training Reciprocity Achieves Greater Consistency, Saves Time and Training Reciprocity Achieves Greater Consistency, Saves Time and Money for Idaho, Other DOE Sites Training Reciprocity Achieves Greater Consistency, Saves Time and Money for Idaho, Other DOE Sites November 26, 2013 - 12:00pm Addthis IDAHO FALLS, Idaho - Contracting companies supporting EM's cleanup program at the Idaho site volunteered to be among the first to use a new DOE training reciprocity program designed to bring more consistency to health and safety training across the complex, reduce redundancy and realize savings and other efficiencies. The DOE Office of Health, Safety and Security (HSS) program is meant to eliminate the need for Department employees and contractors to take redundant training when they move among multiple sites in the complex.

414

Reciprocity Checklist - August 24, 2011 | Department of Energy  

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

Reciprocity Checklist - August 24, 2011 Reciprocity Checklist - August 24, 2011 Reciprocity Checklist - August 24, 2011 August 24, 2011 A checklist to be used whenever you make an eligibility determination for access to classified information for an individual who has a current access eligibility based upon the requisite investigation "CHECKLIST OF PERMITTED EXCElTIONS TO RECIPROCITY (to be used whenever you make an eligibility determination for access to classified information for an individual who has a current access eligibility based upon the requisite investigation (i.e. ANACI, NACLC, SSBI, or SSBI-PR) For the purpose of determining eligibility for access to classified information, to include highly sensitive programs (i.e. SCI, SAPS and Q), as the gaining activityJprogram for an individual who has

415

Non-intrusive fault detection in reciprocating compressors  

E-Print Network (OSTI)

This thesis presents a set of techniques for non-intrusive sensing and fault detection in reciprocating compressors driven by induction motors. The procedures developed here are "non-intrusive" because they rely only on ...

Schantz, Christopher James

2011-01-01T23:59:59.000Z

416

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

417

Technical Assessment for the CPC FD-7x-1500 Wind Turbine located at Tooele Army Base, Tooele Utah  

SciTech Connect

The CPC FD-7x-1500 Wind Turbine was installed with funding from the Energy Conservation Investment Program (ECIP). Since its installation, the turbine has been plagued with multiple operational upsets causing unacceptable down time. In an effort to reduce down time, the Army Corps of Engineers requested the Idaho National Laboratory conduct an assessment of the turbine to determine its viability as an operational turbine.

Robert J. Turk; Kurt S. Myers; Jason W. Bush

2012-08-01T23:59:59.000Z

418

Low thermal stress ceramic turbine nozzle  

DOE Patents (OSTI)

A turbine nozzle vane assembly having a preestablished rate of thermal expansion is positioned in a gas turbine engine and is attached to conventional metallic components, the metallic components having a preestablished rate of thermal expansion greater than the preestablished rate of thermal expansion of the turbine nozzle vane assembly. The turbine nozzle vane assembly includes an outer shroud and an inner shroud having a plurality of vanes there between. Each of the plurality of vanes have a device for heating and cooling a portion of each of the plurality of vanes. Furthermore, the inner shroud has a plurality of bosses attached thereto. A cylindrical member has a plurality of grooves formed therein and each of the plurality of bosses are positioned in corresponding ones of the plurality of grooves. The turbine nozzle vane assembly provides an economical, reliable and effective ceramic component having a preestablished rate of thermal expansion being greater than the preestablished rate of thermal expansion of the other component. 4 figs.

Glezer, B.; Bagheri, H.; Fierstein, A.R.

1996-02-27T23:59:59.000Z

419

Challenges and Solutions to TGO Stress Measurement in Engine ...  

Science Conference Proceedings (OSTI)

Presentation Title, Challenges and Solutions to TGO Stress Measurement in Engine Run Gas Turbine Components. Author(s), Eric H Jordan, Mark S Majewski,...

420

Linearizing and Distributing Engine Models for Control Design.  

E-Print Network (OSTI)

??Turbine engine control is used widely today and is about to undergo a revolution in its control architecture. Currently, all calculations are done on a (more)

Seitz, Timothy M

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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 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

422

Performance test of a bladeless turbine for geothermal applications  

DOE Green Energy (OSTI)

The Possell bladeless turbine was tested at the LLL Geothermal Test Facility to evaluate its potential for application in the total flow process. Test description and performance data are given for 3000, 3500, 4000, and 4500 rpm. The maximum engine efficiency observed was less than 7 percent. It is concluded that the Possell turbine is not a viable candidate machine for the conversion of geothermal fluids by the total flow process. (LBS)

Steidel, R.; Weiss, H.

1976-03-24T23:59:59.000Z

423

Materials and Component Development for Advanced Turbine Systems  

SciTech Connect

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

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

2008-07-01T23:59:59.000Z

424

Gas Turbine Combustor Performance on Synthetic Fuels, Volume 1  

Science Conference Proceedings (OSTI)

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

1980-11-01T23:59:59.000Z

425

Low-pressure-ratio regenerative exhaust-heated gas turbine  

SciTech Connect

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

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

1991-01-01T23:59:59.000Z

426

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

427

Theory and tests of two-phase turbines  

SciTech Connect

Two-phase turbines open the possibility of new types of power cycles operating with extremely wet mixtures of steam and water, organic fluids, or immiscible liquids and gases. Possible applications are geothermal power, waste-heat recovery, refrigerant expansion, solar conversion, transportation turbine engines, and engine bottoming cycles. A theoretical model for two-phase impulse turbines was developed. Apparatus was constructed for testing one- and two-stage turbines (using speed decrease from stage to stage). Turbines were tested with water-and-nitrogen mixtures and Refrigerant 22. Nozzle efficiencies were 0.78 (measured) and 0.72 (theoretical) for water-and-nitrogen mixtures at a water/nitrogen mixture ratio of 68, by mass; and 0.89 (measured) and 0.84 (theoretical) for Refrigerant 22 expanding from 0.02 quality to 0.28 quality. Blade efficiencies (shaft power before windage and bearing loss divided by nozzle jet power) were 0.63 (measured) and 0.71 (theoretical) for water-and-nitrogen mixtures and 0.62 (measured) and 0.63 (theoretical) for Refrigerant 22 with a single-stage turbine, and 0.70 (measured) and 0.85 (theoretical) for water-and-nitrogen mixtures with a two-stage turbine.

Elliot, D.G.

1982-03-15T23:59:59.000Z

428

Steam turbine control  

SciTech Connect

In a power plant which includes a steam turbine with main control valves for admitting steam into the steam turbine and a steam bypass with bypass control valves for diverting steam around the steam turbine directly into a condenser, it is necessary to coordinate the operation of the respective valves so that the steam turbine can be started, brought up to speed, synchronized with a generator and then loaded as smoothly and efficiently as possible. The present invention provides for such operation and, in addition, allows for the transfer of power plant operation from the so-called turbine following mode to the boiler following mode through the use of the sliding pressure concept. The invention described is particularly applicable to combined cycle power plants.

Priluck, D.M.; Wagner, J.B.

1982-05-11T23:59:59.000Z

429

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

430

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

431

NREL Software Aids Offshore Wind Turbine Designs (Fact Sheet)  

DOE Green Energy (OSTI)

NREL researchers are supporting offshore wind power development with computer models that allow detailed analyses of both fixed and floating offshore wind turbines. While existing computer-aided engineering (CAE) models can simulate the conditions and stresses that a land-based wind turbine experiences over its lifetime, offshore turbines require the additional considerations of variations in water depth, soil type, and wind and wave severity, which also necessitate the use of a variety of support-structure types. NREL's core wind CAE tool, FAST, models the additional effects of incident waves, sea currents, and the foundation dynamics of the support structures.

Not Available

2013-10-01T23:59:59.000Z

432

Guidelines for Reducing the Time and Cost of Turbine-Generator Maintenance Overhauls and Inspections 2010--Volume 4: Turbine Generat or Component Procurement Specifications  

Science Conference Proceedings (OSTI)

Up to 70% of the outages planned for conventional steam power plants involve work on the turbine. The challenge for the engineer is to improve performance and extend reliability, while eliminating unproductive activities from the maintenance outage schedule. This report provides general guidelines for planning and performing maintenance on steam turbines during outages.

2010-12-23T23:59:59.000Z

433

Guidelines for Reducing the Time and Cost of Turbine-Generator Maintenance Overhauls and Inspections-2006; Volume 4: Turbine-Generat or Component Procurement Specifications  

Science Conference Proceedings (OSTI)

Up to 70% of the outages planned for conventional steam power plants involve work on the turbine. The challenge for the engineer is to improve performance and extend reliability, while eliminating unproductive activities from the maintenance outage schedule. This report provides general guidelines for planning and performing maintenance on steam turbines during outages.

2007-03-30T23:59:59.000Z

434

Stirling cycle engine  

DOE Patents (OSTI)

In a Stirling cycle engine having a plurality of working gas charges separated by pistons reciprocating in cylinders, the total gas content is minimized and the mean pressure equalization among the serial cylinders is improved by using two piston rings axially spaced at least as much as the piston stroke and by providing a duct in the cylinder wall opening in the space between the two piston rings and leading to a source of minimum or maximum working gas pressure.

Lundholm, Gunnar (Lund, SE)

1983-01-01T23:59:59.000Z

435

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

436

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

437

Photo of the Week: Argonne's 10 kW Wind Turbine | Department of Energy  

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

Photo of the Week: Argonne's 10 kW Wind Turbine Photo of the Week: Argonne's 10 kW Wind Turbine Photo of the Week: Argonne's 10 kW Wind Turbine November 9, 2012 - 11:57am Addthis At Argonne National Laboratory, the power generated by this 10 kW wind turbine helps scientists and engineers study the interaction of wind energy, electric vehicle charging and grid technology. The turbine is also estimated to offset more than 10 metric tons of greenhouse gas emissions annually. Learn more about renewable energy research at Argonne. | Photo courtesy of Argonne National Laboratory. At Argonne National Laboratory, the power generated by this 10 kW wind turbine helps scientists and engineers study the interaction of wind

438

A review of test results on parabolic dish solar thermal power modules with dish-mounted rankine engines and for production of process steam  

SciTech Connect

This paper presents results of development testing of various solar thermal parabolic dish modules and assemblies. Most of the tests were at modules and assemblies that used a dish-mounted, organic Rankine cycle turbine for production of electric power. Some tests were also run on equipment for production of process steam or for production of electricity using dish-mounted reciprocating steam engines. These tests indicate that early modules achieve efficiencies of about 18 percent in converting sunlight to electricity (excluding the inverter but including parasitics). A number of malfunctions occurred. The performance measurements, as well as the malfunctions and other operating experience, provided information that should be of value in developing systems with improved performance and reduced maintenance.

Jaffe, L.D.

1988-11-01T23:59:59.000Z

439

Foam Cleaning of Steam Turbines  

E-Print Network (OSTI)

The efficiency and power output of a steam turbine can be dramatically reduced when deposits form on the turbine blades. Disassembly and mechanical cleaning of the turbine is very time consuming and costly. Deposits can be removed from the turbine internals in situ by foaming an appropriate cleaning solution and injecting it through the turbine, dissolving the deposits and removing them from the system. Because disassembly of the turbine is not required, foam cleaning is a much faster and more cost-effective method of removing deposits. In recent years, HydroChem has removed copper deposits from over 130 Westinghouse and General Electric turbines nationwide using patented equipment.

Foster, C.; Curtis, G.; Horvath, J. W.

2000-04-01T23:59:59.000Z

440

Analysis of a radial-outflow reaction turbine concept for geothermal application  

SciTech Connect

The radial-outflow reaction turbine, a pure-reaction turbine designed to improve the conversion efficiency of geothermal energy into electrical power is described. It also has potential as a total-flow turbine for low-temperature water. The principle of incomplete expansion can be used to obtain a reduction in turbine size when the turbine exhausts into a low-pressure condenser. And, by adding this turbine to single- and two-stage flashed-steam systems, the conversion efficiency of systems utilizing low- and high-energy wellhead sources, respectively can be improved. The Appendix outlines the analysis of the radial-outflow reaction turbine and leads to an expression for engine efficiency.

House, P.A.

1978-05-25T23:59:59.000Z

Note: This page contains sample records for the topic "reciprocating turbine engine" 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.


441

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

442

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

443

Aviation turbine fuels, 1982  

Science Conference Proceedings (OSTI)

Properties of some aviation turbine fuels marketed in the United States during 1982 are presented in this report. The samples represented are typical 1982 production and were analyzed in the laboratories of 14 manufacturers of aviation turbine (jet) fuels. The data were submitted for study, calculation, and compilation under a cooperative agreement between the Department of Energy (DOE), Bartlesville Energy Technology Center (BETC), Bartlesville, Oklahoma, and the American Petroleum Institute (API). Results for the properties of 90 samples of aviation turbine fuels are included in the report for military grades JP-4 and HP-5, and commercial type Jet A.

Shelton, E.M.; Dickson, C.L.

1983-03-01T23:59:59.000Z

444

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

445

Advanced turbine systems program conceptual design and product development: Quarterly report, November 1993--January 1994  

SciTech Connect

This report describes progress made in the advanced turbine systems program conceptual design and product development. The topics of the report include selection of the Allison GFATS, castcool technology development for industrial engines test plan and schedule, code development and background gathering phase for the ultra low NOx combustion technology task, active turbine clearance task, and water vapor/air mixture cooling of turbine vanes task.

1995-01-01T23:59:59.000Z

446

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

447

Advanced turbine systems study system scoping and feasibility study  

SciTech Connect

United Technologies Research Center, Pratt Whitney Commercial Engine Business, And Pratt Whitney Government Engine and Space Propulsion has performed a preliminary analysis of an Advanced Turbine System (ATS) under Contract DE-AC21-92MC29247 with the Morgantown Energy Technology Center. The natural gas-fired reference system identified by the UTC team is the Humid Air Turbine (HAT) Cycle in which the gas turbine exhaust heat and heat rejected from the intercooler is used in a saturator to humidify the high pressure compressor discharge air. This results in a significant increase in flow through the turbine at no increase in compressor power. Using technology based on the PW FT4000, the industrial engine derivative of the PW4000, currently under development by PW, the system would have an output of approximately 209 MW and an efficiency of 55.3%. Through use of advanced cooling and materials technologies similar to those currently in the newest generation military aircraft engines, a growth version of this engine could attain approximately 295 MW output at an efficiency of 61.5%. There is the potential for even higher performance in the future as technology from aerospace R D programs is adapted to aero-derivative industrial engines.

1993-04-01T23:59:59.000Z

448

Integrated Field Testing of Fuel Cells and Micro-Turbines  

DOE Green Energy (OSTI)

A technical and economic evaluation of the prospects for the deployment of distributed generation on Long Beach Island, New Jersey concluded that properly sited DG would defer upgrading of the electric power grid for 10 years. This included the deployment of fuel cells or microturbines as well as reciprocating engines. The implementation phase of this project focused on the installation of a 120 kW CHP microturbine system at the Harvey Cedars Bible Conference in Harvey Cedars, NJ. A 1.1 MW generator powered by a gas-fired reciprocating engine for additional grid support was also installed at a local substation. This report contains installation and operation issues as well as the utility perspective on DG deployment.

Jerome R. Temchin; Stephen J. Steffel

2005-11-01T23:59:59.000Z

449

Performance of a New Lightweight Reciprocating Pump  

DOE Green Energy (OSTI)

A new four-chamber piston pump design has been fabricated and tested. The small-scale propellant pump is intended to be powered by gas at elevated temperatures, e.g. in a gas-generator cycle rocket propulsion system. Two key features are combined for the first time: leak-tight liquid-cooled seals, and a high throughput per unit hardware mass. Measured performance curves quantify flows, pressures, leakage, volumetric efficiency, and tank pressure requirements. A pair of 300-gram pumps operating with significant margin could deliver fuel and oxidizer at 5 MPa to a compact lightweight 1000-N engine, while tank pressure remains at 0.35 MPa. Pump weight is well below one percent of thrust, as is typical for launch vehicle engines. Applications include small upper stages, aggressive maneuvers in space, and miniature launch vehicles for Mars ascent.

Whitehead, J C

2005-06-09T23:59:59.000Z

450

Heat pipe turbine vane cooling  

SciTech Connect

The applicability of using heat pipe principles to cool gas turbine vanes is addressed in this beginning program. This innovative concept involves fitting out the vane interior as a heat pipe and extending the vane into an adjacent heat sink, thus transferring the vane incident heat transfer through the heat pipe to heat sink. This design provides an extremely high heat transfer rate and a uniform temperature along the vane due to the internal change of phase of the heat pipe working fluid. Furthermore, this technology can also eliminate hot spots at the vane leading and trailing edges and increase the vane life by preventing thermal fatigue cracking. There is also the possibility of requiring no bleed air from the compressor, and therefore eliminating engine performance losses resulting from the diversion of compressor discharge air. Significant improvement in gas turbine performance can be achieved by using heat pipe technology in place of conventional air cooled vanes. A detailed numerical analysis of a heat pipe vane will be made and an experimental model will be designed in the first year of this new program.

Langston, L.; Faghri, A. [Connecticut Univ., Storrs, CT (United States). Dept. of Mechanical Engineering

1995-12-31T23:59:59.000Z

451

Wind Turbine Acoustic Noise A white paper  

E-Print Network (OSTI)

Wind Turbine Acoustic Noise A white paper Prepared by the Renewable Energy Research Laboratory...................................................................... 8 Sound from Wind Turbines .............................................................................................. 10 Sources of Wind Turbine Sound

Massachusetts at Amherst, University of

452

Abradable Coatings Increase Gas Turbine Engine Efficiency  

Science Conference Proceedings (OSTI)

Oct 11, 2007 ... This brief article covers the uses of abradable coatings, their development and their function. Wear at high speed, effect of tip width and coating...

453

Engineering Challenges for Floating Offshore Wind Turbines  

SciTech Connect

The major objective of this paper is to survey the technical challenges that must be overcome to develop deepwater offshore wind energy technologies and to provide a framework from which the first-order economics can be assessed.

Butterfield, S.; Musial, W.; Jonkman, J.; Sclavounos, P.

2007-09-01T23:59:59.000Z

454

Utility Advanced Turbine Systems program (ATS) technical readiness testing and pre-commercial demonstration. Annual report, October 30, 1995--September 30, 1996  

DOE Green Energy (OSTI)

Progress is reported on an advanced turbine engine design. The design features a closed loop cooling system. Activities for power plant design were initiated.

NONE

1998-12-31T23:59:59.000Z

455

NETL: Turbines - UTSR Projects  

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

3 Aerodynamics and Heat Transfer Studies of Parameters Specific to the IGCC Requirements: High Mass Flow Endwall Contouring, Leading Edge Filleting and Blade Tip Ejection under Roating Turbine Condition Texas A&M University Meinhard Schobeiri 3 Aerodynamics and Heat Transfer Studies of Parameters Specific to the IGCC Requirements: High Mass Flow Endwall Contouring, Leading Edge Filleting and Blade Tip Ejection under Roating Turbine Condition Texas A&M University Meinhard Schobeiri Project Dates: 10/1/2009 - 9/30/2012 Area of Research: Aero/Heat Transfer Federal Project Manager: Robin Ames Project Objective: This project is advanced research designed to provide the gas turbine industry with a set of quantitative aerodynamic and film cooling effectiveness data essential to understanding the basic physics of complex secondary flows. This includes their influence on the efficiency and performance of gas turbines, and the impact that differing film cooling ejection arrangements have on suppressing the detrimental effect of these

456

NETL: Turbines Archive  

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

Archive Archive KEY: News News & Features Events Events Publications Publications Archive 09.26.2013 Publications The 2013 Hydrogen Turbine Program Portfolio has been posted to the Reference Shelf. 08.15.2013 News DOE Selects Ten Projects to Conduct Advanced Turbine Technology Research Ten university projects to conduct advanced turbine technology research under the Office of Fossil Energy's University Turbine Systems Research (UTSR) Program have been selected by the U.S. Department of Energy (DOE) for additional development. 07.15.2013 News NETL Innovations Recognized with R&D 100 Awards Two technologies advanced by the Office of Fossil Energy's National Energy Technology Laboratory (NETL) in collaboration with strategic partners have been recognized by R&D Magazine as among the 100 most technologically significant products introduced into the commercial marketplace within the past year.

457

NETL: Turbines - UTSR Projects  

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

7 Simulating Particle Deposition and Mitigating Deposition Degradation Effects in Film Cooled Turbine Sections University of Texas 7 Simulating Particle Deposition and Mitigating Deposition Degradation Effects in Film Cooled Turbine Sections University of Texas David Bogard Project Dates: 8/1/2007 - 9/30/2010 Area of Research: Aero/Heat Transfer Federal Project Manager: Mark Freeman Project Objective: A major goal of this project is to determine a reliable methodology for simulating contaminant deposition in a low-speed wind tunnel facility where testing is considerably less costly. The project is aimed at developing new cooling designs for turbine components that will minimize the effect of the depositions of contaminant particles on turbine components and maintain good film cooling performance even when surface conditions deteriorate. Moreover, a methodology will be established that

458

Wind Turbines and Health  

E-Print Network (OSTI)

Wind power has been gaining prominence as a viable sustainable alternative to other forms of energy production. Studies have found that there is increasing population demand for green energy 1,2. In Australia, this has been encouraged by the introduction of the Renewable Energy (Electricity) Act in 2000 and the Renewable Energy Target Scheme in 2009. As with any new technology, wind turbines are not without controversy. Those who oppose the development of wind farms contend that wind turbines can adversely impact the health of individuals living in close proximity. Do wind turbines impact on health? Concerns regarding the adverse health impacts of wind turbines focus on infrasound noise, electromagnetic interference, shadow flicker and blade glint produced

unknown authors

2010-01-01T23:59:59.000Z

459

Wind Turbines and Health  

E-Print Network (OSTI)

Wind power has been gaining prominence as a viable sustainable alternative to other forms of energy production. Studies have found that there is increasing population demand for green energy1,2. In Australia, this has been encouraged by the introduction of the Renewable Energy (Electricity) Act in 2000 and the Renewable Energy Target Scheme in 2009. As with any new technology, wind turbines are not without controversy. Those who oppose the development of wind farms contend that wind turbines can adversely impact the health of individuals living in close proximity. Do wind turbines impact on health? Concerns regarding the adverse health impacts of wind turbines focus on infrasound noise, electromagnetic interference, shadow flicker and blade glint produced

unknown authors

2010-01-01T23:59:59.000Z

460

NETL: Turbines - Reference Shelf  

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

- Catalytic Combustion PDF-855KB 41892 - Praxair Final Report - Low NOx Fuel Flexible Gas Turbine PDF-214KB 42176 - GT 2006 Annual Report PDF-504KB 42495 - UTEP H2 Kinetics...

Note: This page contains sample records for the topic "reciprocating turbine engine" 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.


461

Micro Turbine Generator Program  

Science Conference Proceedings (OSTI)

A number of micro turbines generators have recently been announced as currently commercially available for sale to customers, such as end users, utilities, and energy service providers. Manufacturers and others are reporting certain performance capabilities ...

Stephanie L. Hamilton

2000-01-01T23:59:59.000Z

462

SPACE HANDBOOK TURBINES  

SciTech Connect

Turbine specific weight vs. power plant output was investigated for rubidium, potassium, and sodium at several inlet temperatures to obtain order of magnitude performance and weight of possible nuclear power plant systems. (W.L.H.)

Grimaldi, J.

1960-08-29T23:59:59.000Z

463

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

464

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

465

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

466

NEXT GENERATION TURBINE SYSTEM STUDY  

DOE Green Energy (OSTI)

Rolls-Royce has completed a preliminary design and marketing study under a Department of Energy (DOE) cost shared contract (DE-AC26-00NT40852) to analyze the feasibility of developing a clean, high efficiency, and flexible Next Generation Turbine (NGT) system to meet the power generation market needs of the year 2007 and beyond. Rolls-Royce evaluated the full range of its most advanced commercial aerospace and aeroderivative engines alongside the special technologies necessary to achieve the aggressive efficiency, performance, emissions,