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1

REpower Systems AG | Open Energy Information  

Open Energy Info (EERE)

Systems AG Jump to: navigation, search Name REpower Systems AG Place Hamburg, Germany Zip D-22297 Sector Services, Wind energy Product Wind turbine manufacturer with primary...

2

REpower Systems | Open Energy Information  

Open Energy Info (EERE)

Systems Systems Address 101 SW Main St Place Portland, Oregon Zip 97209 Sector Wind energy Product Wind energy developer Website http://www.repower.de/index.ph Coordinates 45.515534°, -122.675333° 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":45.515534,"lon":-122.675333,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

3

Solar thermal repowering systems integration. Final report  

DOE Green Energy (OSTI)

This report is a solar repowering integration analysis which defines the balance-of-plant characteristics and costs associated with the solar thermal repowering of existing gas/oil-fired electric generating plants. Solar repowering interface requirements for water/steam and salt or sodium-cooled central receivers are defined for unit sizes ranging from 50 MWe non-reheat to 350 MWe reheat. Finally balance-of-plant cost estimates are presented for each of six combinations of plant type, receiver type and percent solar repowering.

Dubberly, L. J.; Gormely, J. E.; McKenzie, A. W.

1979-08-01T23:59:59.000Z

4

Repowering Options Study  

Science Conference Proceedings (OSTI)

This ongoing EPRI project documents and publishes site-specific repowering projects performed by utilities. In this study, Florida Power & Light Company (FP&L) screened several repowering alternatives applicable to four distinct sizes of steam-electric plants on its system.

1988-02-02T23:59:59.000Z

5

Evaluation of alternate system configurations for solar repowering electric power plants  

Science Conference Proceedings (OSTI)

An assessment was performed for the Department of Energy to establish the technical feasibility, utility system impact and economic attractiveness of the solar repowered, El Paso Electric (EPE) Company Newman Unit number1. Typical characteristics of a baseline configuration, selected at the initiation of the study, and four alternative systems were defined. System cost estimates were made and a system cost/value analysis was performed. 2 refs.

Van Bibber, L.E.; Parker, W.G.

1981-01-01T23:59:59.000Z

6

Repowering flexibility of coal-based advanced power systems  

Science Conference Proceedings (OSTI)

The Department of Energy`s (DOE`s) Morgantown Energy Technology Center (METC) helps enhance the economic competitiveness, environmental quality, and national well-being of the U.S. by developing advanced power-generation systems. The potential market for advanced power-generation systems is large. In the U.S., electric demand is estimated to grow at about 1 percent per year through the year 2010. The total power generation market also includes new-capacity as well as replacement of existing power plants as they age. Thus, the market for power systems over the next 15 years is estimated to be about 279,000 megawatts (MW), but could range from as much as 484,000 MW to as little as 153,000 MW. These predictions are summarized. Over the next 15 years, the replacement market is potentially much larger than the expansion market because of the large base of aging power plants in the U.S.

Bajura, R.A.; Bechtel, T.F.; Schmidt, D.K.; Wimer, J.G.

1995-03-01T23:59:59.000Z

7

Repowering the 250 MW Supercritical Power Plant at Lenenergo, Russia  

Science Conference Proceedings (OSTI)

This report describes the repowering of a supercritical 250 MW generating unit with an ABB 52.9 MN gas turbine at the Southern Plant of the Lenenergo system in Russia. It includes a review of the performance parameters of the repowered unit and an economic analysis of the repowering project.

1999-11-30T23:59:59.000Z

8

Repowering with solar energy  

DOE Green Energy (OSTI)

During the transition phase between today's fossil fuel-based energy markets in the US and the ultimate condition of widespread use of renewable resources, solar energy utilization will become commercialized. One of the more-efficient means to use solar energy is based on direct solar thermal conversion. Since sunlight is a diffuse energy source, the more efficiently it is converted to useful form, the less hardware is needed. Since sunlight is inherently intermittent in nature, providing a useful output that is predictable and steady requires the use of some form of storage - thermal, electric, mechanical, chemical, magnetic or in stored fuel. Further, since there exists a large number of fossil-fuel burning installations and a well-established fuel-distribution system to supply them, the initial use of solar energy will likely be in a repowering mode - retrofit hybrids as fuel savers. This is the fundamental basis for solar-thermal repowering.

Curto, P.

1979-03-01T23:59:59.000Z

9

The economics of repowering steam turbines  

SciTech Connect

Repowering is defined as displacing steam presently generated in an existing fossil fuel fired boiler with a gas turbine-heat recovery steam generator (HRSG) system. The steam generated in the HRSG is expanded in the existing steam turbine generator. Repowering advantages include a significant increase in power output at an improved heat rate relative to the base value for the existing steam turbine cycle being repowered. In addition, the reduction in emissions can be advantageous in most locations. This paper discusses application and economic considerations associated with repowering. In addition, an illustration will show how repowering coal fired steam turbine systems may prove economic relative to retrofit scrubbers and/or low sulfur coal fuel substitution that may be part of the forthcoming acid rain legislation.

Kovacik, J.M.; Stoll, H.G. (General Electric Co., Schenectady, NY (United States))

1990-01-01T23:59:59.000Z

10

Combustion turbine repowering: Final report  

SciTech Connect

The study discusses the findings of a conceptual site-specific investigation into the feasibility of repowering an existing reheat fossil unit utilizing combustion turbines. It identifies a potentially attractive repowering project, through the evaluation and selective elimination of a large number of alternatives. A conceptual design is performed on the selected alternative. Capital costs are developed for this alternative including new equipment and modifications to existing equipment. The results of an economic evaluation and sensitivity analysis are presented, to serve as a basis for a decision on whether or not to proceed with final design, procurement, and construction of the system. The steps presented in the report are intended to provide for the utility industry a detailed methodology for investigating repowering at a specific utility site. 4 refs., 21 figs., 15 tabs.

Oliker, I.; Silaghy, F.J.

1987-11-01T23:59:59.000Z

11

Solar thermal repowering  

SciTech Connect

Solar central receiver technology is developing steadily with a promise of becoming a real commercial alternative for energy generation in the late 1980s. Significant potential markets have been identified, research and development of important components is proceeding well, and the first full-system verification experiment at Barstow, California, is under construction. However, much work still lies ahead. A big step toward the realization of large-scale commercial use of solar energy was taken when the Department of Energy (DOE) issued a solicitation in March 1979 for utility repowering/industrial retrofit system conceptual design studies employing solar central receivers. Twenty-two responses were evaluated, and twelve were selected for funding. The results of the twelve studies, plus one study completed earlier and one privately funded, are sufficiently encouraging to warrant proceeding to the next stage of the program: cost-shared projects chosen through open competition. Eight of he fourteen studies are for electric utility repowering of existing oil or natural gas generating plants. The other six are the first site-specific studies of the use of solar central receiver systems for industrial process heat. The industrial processes include gypsum board drying, oil refining, enhanced oil recovery, uranium ore processing, natural gas processing, and ammonia production. Site descriptions, project summaries, conceptual designs, and functional descriptions are given for each of these 14 studies.

1980-08-01T23:59:59.000Z

12

Introduction to repowering  

Science Conference Proceedings (OSTI)

Gas turbine repowering has been a part of the power industry since the early 1980s. In some of the industrialized nations, many electric generating plants are now over 30 years old. These plants are still functioning, but they are among the last to be dispatched, since efficiency is low and cost of per kilowatt of electricity is high. Many of these plants are direct-fired facilities which are candidates for some form of repowering; i.e., replacement of the heat source (boiler) with a gas turbine and HRSG, or installation of a gas turbine/HRSG as an additional heat source. Repowering can also be applied to nuclear facilities, with a series of gas turbines replacing the reactor. This has been less common so far than repowering of direct-fired plants, but may become more common in the next century, as nuclear plants reach retirement age. This paper discusses briefly the types of repowering, and repowering advantages. 1 fig.

NONE

1995-05-01T23:59:59.000Z

13

Repowering: Reap the benefits of advanced technologies  

Science Conference Proceedings (OSTI)

Discussed for many years, repowering is now coming of age as utilities and NUGs maximize the use of existing sites and major pieces of equipment/support systems. Several advanced repowering options--including IGCC and PFBC/CC--are discussed. Within the next few years, more than 3500 utility powerplants will have reached their 30th birthdays. A significant number of these facilities--more than 20 GW of capacity by some estimates--are candidates for repowering, an option that can cut emissions and boost plant efficiency, reliability, output, and service life. The term repowering describes several plant-revitalization schemes. This report concentrates on the most common repowering options demonstrated or now being considered by US utilities--those where the original steam generator is replaced by either: (1) a gas turbine/generator and heat-recovery steam generator (HRSG), (2) an atmospheric fluidized-bed boiler (AFB), (3) a coal-gasification combined-cycle (CGCC) process, or (4) a pressurized fluidized-bed combined-cycle (PFBC-CC) system. Other options, such as a gas turbine exhausting into the boiler, are also briefly reviewed. Another repowering strategy, the addition of a steam bottoming cycle to a gas turbine, is not discussed here.

Not Available

1993-07-01T23:59:59.000Z

14

Facility repowering study  

Science Conference Proceedings (OSTI)

The economic, fuel, and environmental implications of repowering existing nonreheat, oil-fired electrical generating facilities in California with distillate fuels, and was extended by CEC staff to include coal-derived synthetic fuels are evaluated. California's older oil-fired power plants are very inefficient and repowering would significantly reduce the amount of oil burned to produce a unit of electrical energy at these facilities. Repowering would also add new generating capacity without requiring new sites. Specific power plants were categorized according to their potential for repowering. Between the initiation of the contract and the termination date, federal legislation was enacted (Power Plant and Industrial Fuel Use Act (PIFUA)), which effectively prohibits oil-based repowering. In order to make best use of the repowering work, CEC staff supplemented the study with analysis based upon replacing the distillate fuel for combustion turbine utilization with relatively clean-burning fuels derived from coal (i.e., methanol, SNG). This work concluded that 42 units statewide have good potential for repowering and would add greater than 5200 MW of new capacity at approximately $250/kW ($ 1977). For both distillate and synfuels repowering, emissions would decrease over the nonrepowered levels.

Not Available

1980-11-01T23:59:59.000Z

15

Studies of solar hybrid repowering of utility electric-power plants (interim report)  

DOE Green Energy (OSTI)

A baseline repowering configuration used as a reference is defined, and the potential benefits of repowering are outlined from the programmatic, utility, and national viewpoints. The market size for solar repowering is reviewed with the split by plants and their requirements imposed on solar technology and plant design. Various solar technology implementation options are discussed. Highlights of the key results of studies on the economics of integration of solar repowered plants into utility systems are presented. (LEW)

Not Available

1980-01-01T23:59:59.000Z

16

Strategic Assessment of Repowering  

Science Conference Proceedings (OSTI)

Repowering offers generating companies an opportunity to enhance the value of existing assets. Combustion turbine cycles using natural gas are currently the preferred technologies for repowering fossil steam units to improve efficiency and plant utilization, and there are several alternative integration options available. Further, there are business aspects pertaining to ownership, taxes, finance, regulations, and transmission access that can provide additional value and key advantages.

1997-08-20T23:59:59.000Z

17

Repowering Wind Projects in the United States  

Science Conference Proceedings (OSTI)

Wind turbines installed throughout the United States in the 1980s and early 1990s are reaching the end of their useful lives. Owners and developers are faced with the decision to repower, refurbish, or decommission these older wind projects. This report presents an overview of wind repowering experience in Europe and the United States, including the identification of repowered projects, a summary of legislation affecting repowering in Europe, and an analysis of drivers and barriers for repowering ...

2012-10-19T23:59:59.000Z

18

An inlet air washer/chiller system for combined cycle planet repowering  

Science Conference Proceedings (OSTI)

A conditioning method to achieve increased output at any relative humidity condition is an air washer and absorption chiller arrangement. At elevated temperatures and low humidity, the air washer operates as an evaporative cooler without the chiller in operation. In this mode, the air washer will give similar results as a media type evaporative cooler at a fraction of the pressure loss. In the air washer plus chiller operating mode the chiller maintains cooling effectiveness of the air washer during periods of high relative humidity. This makes such a system very appropriate anywhere relative humidity is high. Many combined cycle plants utilize supplemental firing of the heat recovery steam generators to offset the loss of gas turbine power at high ambient temperatures. This paper shows that in contrast to supplementary firing, the combination air washer/chiller system can generate power more efficiently and at lower cost.

Sengupta, U.; Soroka, G. (Bechtel Power Corp., Gaithersburg, MD (USA))

1989-01-01T23:59:59.000Z

19

Haiti Repowered | Open Energy Information  

Open Energy Info (EERE)

Haiti Repowered Haiti Repowered Jump to: navigation, search Name Haiti Repowered Place Crested Butte, Colorado Zip 81224 Website http://www.HaitiRepowered.ning Coordinates 38.8697146°, -106.9878231° 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":38.8697146,"lon":-106.9878231,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

20

Hanford Generating Project (HGP) Repowering Analysis.  

Science Conference Proceedings (OSTI)

The Hanford Generating Project (HGP), owned by the Washington Public Power Supply System, consists of two low pressure steam turbines, generators, and associated equipment located adjacent to the Department of Energy's (DOE) N-Reactor. HGP has been able to produce approximately 800 MWe with low pressure steam supplied by N-Reactor. DOE has placed N-Reactor in cold standby status for an undetermined length of time. This results in the idling of the HGP since no alternative source of steam is available. Bonneville Power Administration contracted with Fluor Daniel, Inc. to investigate the feasibility and cost of constructing a new source of steam for (repowering) one of the HGP turbines. The steam turbine is currently operated with 135 psia steam. The turbines can be rebuilt to operate with 500 psia steam pressure by adding additional stages, buckets, nozzles, and diaphragms. Because of the low pressure design, this turbine can never achieve the efficiencies possible in new high pressure turbines by the presences of existing equipment reduces the capital cost of a new generating resource. Five repowering options were investigated in this study. Three cases utilizing gas turbine combined cycle steam generation equipment, one case utilizing a gas fired boiler, and a case utilizing a coal fired boiler. This report presents Fluor Daniel's analysis of these repowering options.

Fluor Daniel Fernald (Firm)

1988-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Natural gas repowering creates new capacity and efficiency options for utilities  

Science Conference Proceedings (OSTI)

Repowering of aging electrical generation units in the U.S. is becoming increasingly accepted as a key technology for meeting future electrical demands. Repowering of steam electric generating capacity can be broadly defined as the replacement of existing equipment with new, more efficient systems that also offer lower emissions and substantially increased capacity. The feasibility of repowering units has been largely established. The basic equipment needed for gas-based repowering, including state-of-the-art gas turbines and heat recovery steam generators, are considered established and mature technologies by the utility industry. Nevertheless, important questions exist about the future of the repowering market. GRI had addressed these issues through three different projects in the last year: A technology-based, bottom-up study of repowering issues and markets; A top-down, capacity growth/demographic study of repowering markets; and A workshop with gas equipment and electric utility representative to discuss the future of gas repowering. These studies are summarized.

NONE

1995-05-01T23:59:59.000Z

22

Solar thermal repowering utility value analysis. Final report  

DOE Green Energy (OSTI)

The retrofit of solar central receiver energy supply systems to existing steam-electric generating stations (repowering) is being considered as a major programmatic thrust by DOE. The determination of a government response appropriate to the opportunities of repowering is an important policy question, and is the major reason for the analysis. The study objective is to define a government role in repowering that constitutes an efficient program investment in pursuit of viable private markets for heliostat-based energy systems. In support of that objective, the study is designed to identify the scope and nature of the repowering opportunity within the larger context of its contributions to central receiver technology development and commercialization. The Supply and Integration Tasks are documented elsewhere. This report documents the Demand Task, determining and quantifying the sources of the value of repowering and of central receiver technology in general to electric utilities. The modeling tools and assumptions used in the Demand Task are described and the results are presented and interpreted. (MCW)

Taylor, R.; Day, J.; Reed, B.; Malone, M.

1979-12-01T23:59:59.000Z

23

Repowering of coal-fired station moves forward  

SciTech Connect

This article reports on repowering challenges at the McWilliams station which include site layout restrictions, thermal discharge limitations, different steam pressures and temperatures, and 40-yr-old pneumatic controls. Equipment delivery for this bona fide repowering is scheduled for this fall; commercial operation by June. Major components to be added to the plant include a single V84.2 gas turbine, provided by Siemens AG, Power Generation Group (KWU), Erlangen, Germany, a Siemens distributed control system (DCS), a heat-recovery steam generator (HRSG), supplied by Babcock and Wilcox Co, Barberton, Ohio, and a cooling tower built by Hamon Cooling Towers, Bridgewater, NJ.

Meyer, R. [Alabama Electric Cooperative Inc., Andalusia, AL (United States); Balsbaugh, R.; Korinek, K.

1995-10-01T23:59:59.000Z

24

Technical and economic assessment of solar hybrid repowering. Final report  

DOE Green Energy (OSTI)

Public Service Company of New Mexico (PNM) has performed a Technical and Economic Assessment of Solar Hybrid Repowering under funding by the Department of Energy (DOE), the Electric Power Research Institute (EPRI), Western Energy Supply and Transmission (WEST) Associates, and a number of southwestern utilities. Solar hybrid repowering involves placement of solar hardware adjacent to and connected to existing gas- and oil-fueled electric generation units to displace some of or all the fossil fuel normally used during daylight hours. The subject study assesses the technical economic viability of the solar hybrid repowering concept within the southwestern United States and the PNM system. This document is a final report on the study and its results. The study was divided into the six primary tasks to allow a systematic investigation of the concept: (1) market survey and cost/benefit analysis, (2) study unit selection, (3) conceptual design and cost estimates, (4) unit economic analysis, (5) program planning, future phases, and (6) program management. Reeves Station No. 2 at Albuquerque, New Mexico, was selected for repowering with a design goal of 50 percent (25 MWe). The solar system design is based on the 10 MW solar central receiver pilot plant preliminary design for Barstow, California. SAN--1608-4-2 contains the technical drawings. (WHK)

None

1978-09-01T23:59:59.000Z

25

Facility repowering study. Final consultant report  

Science Conference Proceedings (OSTI)

This study evaluates the economic, fuel, and environmental implications of repowering existing nonreheat, oil-fired electrical generating facilities in California with distillate fuels, and was extended by CEC staff to include coal-derived synthetic fuels. California's older oil-fired power plants are very inefficient and repowering would significantly reduce the amount of oil burned to produce a unit of electrical energy at these facilities. Repowering would also add new generating capacity without requiring new sites. Specific power plants were categorized according to their potential for repowering. Between the initiation of the contract and the termination date, federal legislation was enacted (Power Plant and Industrial Fuel Use Act (PIFUA)), which effectively prohibits oil-based repowering. In order to make best use of the repowering work, CEC staff supplemented the study with analysis based upon replacing the distillate fuel for combustion turbine utilization with relatively clean-burning fuels derived from coal (i.e., methanol, SNG).

Not Available

1980-11-01T23:59:59.000Z

26

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

Science Conference Proceedings (OSTI)

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

Garland, R.V.

1981-07-01T23:59:59.000Z

27

Wabash River Coal Gasification Repowering Project: A DOE Assessment  

SciTech Connect

The goal of the U.S. Department of Energy (DOE) Clean Coal Technology Program (CCT) is to furnish the energy marketplace with a number of advanced, more efficient, and environmentally responsible coal utilization technologies through demonstration projects. These projects seek to establish the commercial feasibility of the most promising advanced coal technologies that have developed beyond the proof-of-concept stage. This document serves as a DOE post-project assessment (PPA) of a project selected in CCT Round IV, the Wabash River Coal Gasification Repowering (WRCGR) Project, as described in a Report to Congress (U.S. Department of Energy 1992). Repowering consists of replacing an existing coal-fired boiler with one or more clean coal technologies to achieve significantly improved environmental performance. The desire to demonstrate utility repowering with a two-stage, pressurized, oxygen-blown, entrained-flow, integrated gasification combined-cycle (IGCC) system prompted Destec Energy, Inc., and PSI Energy, Inc., to form a joint venture and submit a proposal for this project. In July 1992, the Wabash River Coal Gasification Repowering Project Joint Venture (WRCGRPJV, the Participant) entered into a cooperative agreement with DOE to conduct this project. The project was sited at PSI Energy's Wabash River Generating Station, located in West Terre Haute, Indiana. The purpose of this CCT project was to demonstrate IGCC repowering using a Destec gasifier and to assess long-term reliability, availability, and maintainability of the system at a fully commercial scale. DOE provided 50 percent of the total project funding (for capital and operating costs during the demonstration period) of $438 million.

National Energy Technology Laboratory

2002-01-15T23:59:59.000Z

28

Sequential fissions of heavy nuclear systems  

E-Print Network (OSTI)

In Xe+Sn central collisions from 12 to 20 MeV/A measured with the INDRA 4$\\pi$ multidetector, the three-fragment exit channel occurs with a significant cross section. In this contribution, we show that these fragments arise from two successive binary splittings of a heavy composite system. Strong Coulomb proximity effects are observed in the three-fragment final state. By comparison with Coulomb trajectory calculations, we show that the time scale between the consecutive break-ups decreases with increasing bombarding energy, becoming compatible with quasi-simultaneous multifragmentation above 18 MeV/A.

Diego Gruyer; J. D. Frankland; E. Bonnet; M. Boisjoli; A. Chbihi; L. Manduci; P. Marini; K. Mazurek; P. N. Nadtochy

2013-08-24T23:59:59.000Z

29

Stoney Corners II (REpower) | Open Energy Information  

Open Energy Info (EERE)

REpower) REpower) Jump to: navigation, search Name Stoney Corners II (REpower) Facility Stoney Corners II (REpower) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Heritage Sustainable Energy Developer Heritage Sustainable Energy Energy Purchaser Traverse City Light & Power/Detroit Edison Location McBain MI Coordinates 44.209°, -85.275° 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":44.209,"lon":-85.275,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

30

Canadian Hills (Repower) | Open Energy Information  

Open Energy Info (EERE)

Canadian Hills (Repower) Canadian Hills (Repower) Jump to: navigation, search Name Canadian Hills (Repower) Facility Canadian Hills (Repower) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Atlantic Power Corp Developer Apex Wind Energy Energy Purchaser Oklahoma Municipal Power Authority / SWEPCO Location Calumet OK Coordinates 35.66212553°, -98.12820911° 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":35.66212553,"lon":-98.12820911,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

31

Aeroman Repower Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Aeroman Repower Wind Farm Aeroman Repower Wind Farm Jump to: navigation, search Name Aeroman Repower Wind Farm Facility Aeroman repower (2003) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Coram Energy Developer Coram Energy Energy Purchaser Southern California Edison Co Location Tehachapi CA Coordinates 35.044965°, -118.278036° 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":35.044965,"lon":-118.278036,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

32

Better Buildings Neighborhood Program: RePower Bainbridge's Final Boarding  

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

RePower RePower Bainbridge's Final Boarding Call Sets Sail for Success to someone by E-mail Share Better Buildings Neighborhood Program: RePower Bainbridge's Final Boarding Call Sets Sail for Success on Facebook Tweet about Better Buildings Neighborhood Program: RePower Bainbridge's Final Boarding Call Sets Sail for Success on Twitter Bookmark Better Buildings Neighborhood Program: RePower Bainbridge's Final Boarding Call Sets Sail for Success on Google Bookmark Better Buildings Neighborhood Program: RePower Bainbridge's Final Boarding Call Sets Sail for Success on Delicious Rank Better Buildings Neighborhood Program: RePower Bainbridge's Final Boarding Call Sets Sail for Success on Digg Find More places to share Better Buildings Neighborhood Program: RePower Bainbridge's Final Boarding Call Sets Sail for Success on

33

Wabash River Coal Gasification Repowering Project: A DOE Assessment  

Science Conference Proceedings (OSTI)

The goal of the U.S. Department of Energy (DOE) Clean Coal Technology Program (CCT) is to furnish the energy marketplace with a number of advanced, more efficient, and environmentally responsible coal utilization technologies through demonstration projects. These projects seek to establish the commercial feasibility of the most promising advanced coal technologies that have developed beyond the proof-of-concept stage. This document serves as a DOE post-project assessment (PPA) of a project selected in CCT Round IV, the Wabash River Coal Gasification Repowering (WRCGR) Project, as described in a Report to Congress (U.S. Department of Energy 1992). Repowering consists of replacing an existing coal-fired boiler with one or more clean coal technologies to achieve significantly improved environmental performance. The desire to demonstrate utility repowering with a two-stage, pressurized, oxygen-blown, entrained-flow, integrated gasification combined-cycle (IGCC) system prompted Destec Energy, Inc., and PSI Energy, Inc., to form a joint venture and submit a proposal for this project. In July 1992, the Wabash River Coal Gasification Repowering Project Joint Venture (WRCGRPJV, the Participant) entered into a cooperative agreement with DOE to conduct this project. The project was sited at PSI Energy's Wabash River Generating Station, located in West Terre Haute, Indiana. The purpose of this CCT project was to demonstrate IGCC repowering using a Destec gasifier and to assess long-term reliability, availability, and maintainability of the system at a fully commercial scale. DOE provided 50 percent of the total project funding (for capital and operating costs during the demonstration period) of $438 million. Construction for the demonstration project was started in July 1993. Pre-operational tests were initiated in August 1995, and construction was completed in November 1995. Commercial operation began in November 1995, and the demonstration period was completed in December 1999. The independent evaluation contained herein is based primarily on information provided in Wabash's Final Report (Dowd 2000), as well as other references and bibliographic sources.

National Energy Technology Laboratory

2002-01-15T23:59:59.000Z

34

A utility survey and market assessment on repowering in the electric power industry  

SciTech Connect

Section 1 of this report provides a background about the DOE High Performance Power Systems (HIPPS) program. There are two kinds of HIPPS cycles under development. One team is led by the Foster Wheeler Development Corporation, the other team is led by the United Technologies Research Center. These cycles are described. Section 2 summarizes the feedback from the survey of the repowering needs of ten electric utility companies. The survey verified that the utility company planners favor a repowering for a first-of-a-kind demonstration of a new technology rather than an all-new-site application. These planners list the major factor in considering a unit as a repowering candidate as plant age: they identify plants built between 1955 and 1965 as the most likely candidates. Other important factors include the following: the need to reduce operating costs; the need to perform major maintenance/replacement of the boiler; and the need to reduce emissions. Section 3 reports the results of the market assessment. Using the size and age preferences identified in the survey, a market assessment was conducted (with the aid of a power plant data base) to estimate the number and characteristics of US generating units which constitute the current, primary potential market for coal-based repowering. Nearly 250 units in the US meet the criteria determined to be the potential repowering market.

Klara, J.M. [USDOE Pittsburgh Energy Technology Center, PA (United States); Weinstein, R.E. [Parsons Power Group Inc., Reading, PA (United States); Wherley, M.R. [Science Applications International Corp., Reston, VA (United States)

1996-08-01T23:59:59.000Z

35

CA la electricidad de caracas: Arrecifes repowering project. Feasibility study report. Export trade information  

Science Conference Proceedings (OSTI)

The study, conducted by Raytheon Engineers & Constructors, was funded by the U.S. Trade and Development agency on behalf of C.A. La Electricidad de Caracas. The report shows the results of a feasibility study conducted to evaluate the repowering of the Arrecifes Power Plant. The study focuses on capital cost for the project, refurbishment of existing equipment, and the installation of new repowering equipment. The study also evaluates combustion turbine generators of different manufacturers and sizes to determine the most beneficial configuration. The report is divided into the following sections: (1) Introduction; (2) Conclusions and Recommendations; (3) Study Basis; (4) Alternatives Analysis; (5) Layout and Equipment Issues; (6) Performance and Economic Analysis; (7) Repowered Facility Description; (8) Mechanical Systems; (9) Civil/Structural/Architectural; (10) Electrical Systems; (11) Instrumentation and Controls; (12) Environmental Overview; (13) Project Implementation Plan; (14) Project Conceptual Cost Estimate.

NONE

1993-10-01T23:59:59.000Z

36

Higgins coal gasification/repowering study, feasibility study for alternate fuels. Vol. 1. Executive summary  

SciTech Connect

Florida Power has completed a study to determine the feasibility of repowering 138 MW gross of oil-fired steam-generating capacity at its A.W. Higgins power station (Pinellas Co., Fla.) by utilizing coal-gasification combined-cycle (CGCC) technology. The repowering would add approximately 320 MW of gross electrical generation to the Higgins station through the use of combustion turbines and heat recovery equipment. This study provided Florida Power with the technical, environmental, and economic information necessary to determine the viability of using CGCC at the Higgins station. The plant would use BGC/Lurgi slagging gasifiers and the Selexol acid-gas removal system. Although this new technology represents an acceptable level of risk for the proposed project to be considered technically feasible, the capital-cost estimates were much higher than expected. Florida Power plans to continue further economic evaluations of this CGCC repowering option.

Not Available

1981-12-01T23:59:59.000Z

37

Newman Unit 1 solar repowering. Final report  

DOE Green Energy (OSTI)

This specification defines the system and subsystem characteristics, design requirements, and system environmental requirements for solar repowering of Newman Unit 1 which is operating on the El Paso Electric Company (EPE) system. This unit has a reheat steam turbine rated to produce 82 MWe with a 10.1 Pa/538/sup 0/C (1450 psig/1000/sup 0/F) main steam conditions and a 2.93 MPa/538/sup 0/C (410 psig/1000/sup 0/F) reheat steam conditions. The solar subsystem will be designed to supply steam in sufficient quantity and quality to generate 50 percent of the rated electrical power at the design point of noon summer solstice. It will operate in parallel with the present gas/oil fired boiler. In general, the level of detail presented in this specification is consistent with the conceptual design phase of a large power plant project. Engineering information is developed to the extent necessary to support the development of a conceptual plant cost estimate and the determination of technical and economic feasibility of the project.

Not Available

1980-07-01T23:59:59.000Z

38

Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) Repowering Considerations  

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

Weinstein & Travers: APFBC Repowering Considerations Weinstein & Travers: APFBC Repowering Considerations paper 970563 Page 1 of 35 Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) Repowering Considerations Richard E. Weinstein, P.E. Parsons Power Group Inc. Reading, Pennsylvania eMail: Richard_E_Weinstein@Parsons.COM / phone: 610 / 855-2699 Robert W. Travers, P.E. U.S. Department of Energy Office of Fossil Energy Germantown, Maryland eMail: Robert.Travers@HQ.DOE.GOV / phone: 301 / 903-6166 Weinstein & Travers: APFBC Repowering Considerations paper 970563 Page 2 of 35 Advanced Circulating Pressurized Fluidized Bed Combustion Repowering Considerations ABSTRACT ..............................................................................................................................................................................

39

Electric utility repowering assessment. Final report, July 1993-February 1994  

SciTech Connect

The report evaluates the potential for repowering of existing electric generation stations in the United States over the period 1994 to 2003. The report includes these topics: (1) Recommendations to GRI for technical development of repowering; (2) An evaluation of the major technological factors concerning major repowering options; (3) A generic economic assessment of the cost of repowering compared to alternatives; (4) An investigation of the factors that are important in the utility decision-making process concerning repowering. The topic was based on several in-depth interviews with utilities. (5) An evaluation of the potential market subdivided into two groups: gas- and oil-fired plants and coal-fired plants.

Lennox, F.; Siegel, J.; Preble, B.

1994-02-01T23:59:59.000Z

40

Assessment of PFBC and gasification repowering  

Science Conference Proceedings (OSTI)

One of the first implications of full competition in the utility industry is the reluctance to risk capital intensive investments in new plant construction. As the Department of Energy`s Clean Coal Technology program readies a suite of technologies for commercial application, and as deregulation unfolds, the electric utility industry begins to look at the potential for repowering existing sites. This approach to power plant investment involves applications of repowering technologies, upratings, and refurbishing older stations. The decision to repower is influenced by factors that include market demand, power station characteristics, and technology choices. This paper describes the results of a comparative technical and economic evaluation of several clean coal technologies in a repowering application. The objectives of the study were to compare thermal and economic performance of a suite of clean coal technologies in a repowering application under a consistent set of guidelines. Approach The approach taken in this comparative evaluation of Advanced Technologies in a repowering application was to define a reference pulverized coal (PC) fired power station, and then apply each candidate technology in succession. Each case was modeled in a modified version of the ASPEN/SP flow sheet simulation program, along with a suitable combustion turbine, where applicable, and the host plant steam cycle. Pittsburgh No. 8 coal is used for most of the cases evaluated, except for one case involving a natural gas fired combustion turbine, another case where the technology variable is the use of a Process Derived Fuel ( ENCOAL Corp. PDF) in place of coal, and a third case where coal is the primary fuel, but some natural gas is used for topping combustion.

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

1996-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

PCFB Repowering Project 80 MW plant description  

Science Conference Proceedings (OSTI)

This report documents the design of a 80 MW Pressurized Circulating Fluidized Bed (PCFB) boiler for the repowering of Unit 1 at the Des Moines Energy Center. Objective is to demonstrate that PCFB combined-cycle technology is cost effective and environmentally superior compared to traditional pulverized coal burning facilities.

Not Available

1994-05-01T23:59:59.000Z

42

Solar repowering of fossil plants--an emerging technology  

Science Conference Proceedings (OSTI)

The market for solar repowering has been assessed in several DOE sponsored studies, one devoted specifically to repowering, and the other to solar hybrid type of power plants. Since repowering can be considered to be a solar hybrid, the total potential market is the aggregate of plants which are possible candidates for repowering plus planned new plants in the time frame 1985 to 2000. In addition to solar repowering of fossil oil/gas fired power plants, a perceived large market exists for solar retrofit industrial facilities. Repowering a power plant entails switching the source of energy of an existing power plant from a fossil fuel to a more readily available and/or cheaper fuel. An existing plant can be fully repowered by the chosen substitute fuel, thereby, eliminating the original energy input source, or the new plant can be partially repowered, with the new fuel providing part of the energy input to the power cycle or the two sources of fuel can coexist in parallel. One of the most advantageous sources of energy for repowering is solar energy in a power generating facility with the central receiver concept.

Galperin, J.; Weber, E.

1980-12-01T23:59:59.000Z

43

USDA - Repowering Assistance Biorefinery Program (Federal) | Department of  

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

USDA - Repowering Assistance Biorefinery Program (Federal) USDA - Repowering Assistance Biorefinery Program (Federal) USDA - Repowering Assistance Biorefinery Program (Federal) < Back Eligibility Agricultural Commercial Fed. Government Industrial Institutional Investor-Owned Utility Local Government Municipal Utility Nonprofit Rural Electric Cooperative State Government Tribal Government Utility Savings Category Biofuels Alternative Fuel Vehicles Bioenergy Maximum Rebate 50% of the total project costs Program Info Program Type Federal Grant Program Rebate Amount Varies Provider Rural Business - Cooperative Service The Repowering Assistance Program provides payments to eligible biorefineries to replace fossil fuels used to produce heat or power to operate the biorefineries with renewable biomass. Reimbursement payments are provided to offset a portion of the costs associated with the

44

CE IGCC repowering project: Controls & instrumentation. Topical report, June 1993  

Science Conference Proceedings (OSTI)

The IGCC Control System is used to provide operator interface and controls for manual and auto operation of the IGCC Repowering Project Located at Springfield, Illinois. A Distributed Control System (DCS) is provided for analog (process control) loop functions and to provide the operator interface. A Data Acquisition System (DAS) is provided for gathering performance data and optimization. Programmable Logic Controllers will be provided for the following digital control systems: (a) GSSS (Gasifier Supervisory Safety System) including pulverized coal handling and char handling; (b) Coal Pulverization System; (c) HRSG (Heat Recovery Steam Generation); (d) Hot Gas Cleanup System; (e) Steam Turbine; and (f) Combined Cycle Operation. In general all systems are provided for auto/manual cascade operation; upstream equipment is interlocked to be proven in service operation and/or valve position before downstream equipment may operate.

Not Available

1993-12-01T23:59:59.000Z

45

Repowering a small coal-fired power plant  

Science Conference Proceedings (OSTI)

The Arkansas River Power Authority (ARPA) Lamar Repowering Project is moving forward. The new generator, capable of producing 18 MW of electricity, is scheduled to be online in June 2008 bringing the total generation to 43 MW. New coal handling equipment, with infrared fire detectors, is almost complete. The new 18 MW steam turbine will be cooled by an air-cooled condenser. Coal will be delivered in a railroad spur to an unloading site then be unloaded onto a conveyor under the tracks and conveyed to two storage domes each holding 6000 tons of coal. It will be drawn out of these through an underground conveyor system, brought into a crusher, conveyed through overhead conveyors and fed into the new coal- fired fluidized bed boilers. 1 photo.

Miell, R.

2007-11-15T23:59:59.000Z

46

Mosenergo Ryazan Repowering Project (GRES-24). Feasibility study. Export trade information  

Science Conference Proceedings (OSTI)

This study, conducted by GE Power Systems Engineering, was funded by the U.S. Trade and Development Agency. The objective of this study was to determine the technical and economic feasibility and demonstrate the financial attractiveness of repowering Mosenergo`s power plant. The report covers the overall efficiency and cycle output of the repowered cycle, as well unit costs for fuel pricing and electricity. The report is divided into the following sections: Executive Summary (I) Summary of Technical, Economic and Financing Analyses Tab 1; Overview (II) Detail Analyses/Reports Tab 2; General Electric Power Systems Tab 3; Teploelectroproject (TEP) Tab 4; Machine-Building Factory of Podoslk Tab 5; Russian Project Finance Bank Tab 6; Gilbert Commonwealth. (III) Drawings (in Russian Version only).

NONE

1996-02-20T23:59:59.000Z

47

WABASH RIVER COAL GASIFICATION REPOWERING PROJECT  

Science Conference Proceedings (OSTI)

The close of 1999 marked the completion of the Demonstration Period of the Wabash River Coal Gasification Repowering Project. This Final Report summarizes the engineering and construction phases and details the learning experiences from the first four years of commercial operation that made up the Demonstration Period under Department of Energy (DOE) Cooperative Agreement DE-FC21-92MC29310. This 262 MWe project is a joint venture of Global Energy Inc. (Global acquired Destec Energy's gasification assets from Dynegy in 1999) and PSI Energy, a part of Cinergy Corp. The Joint Venture was formed to participate in the Department of Energy's Clean Coal Technology (CCT) program and to demonstrate coal gasification repowering of an existing generating unit impacted by the Clean Air Act Amendments. The participants jointly developed, separately designed, constructed, own, and are now operating an integrated coal gasification combined-cycle power plant, using Global Energy's E-Gas{trademark} technology (E-Gas{trademark} is the name given to the former Destec technology developed by Dow, Destec, and Dynegy). The E-Gas{trademark} process is integrated with a new General Electric 7FA combustion turbine generator and a heat recovery steam generator in the repowering of a 1950's-vintage Westinghouse steam turbine generator using some pre-existing coal handling facilities, interconnections, and other auxiliaries. The gasification facility utilizes local high sulfur coals (up to 5.9% sulfur) and produces synthetic gas (syngas), sulfur and slag by-products. The Project has the distinction of being the largest single train coal gasification combined-cycle plant in the Western Hemisphere and is the cleanest coal-fired plant of any type in the world. The Project was the first of the CCT integrated gasification combined-cycle (IGCC) projects to achieve commercial operation.

Unknown

2000-09-01T23:59:59.000Z

48

Dynamic performance analysis for the solar hybrid repowering of the El Paso Electric Company Newman Unit Number 1  

Science Conference Proceedings (OSTI)

The objective of this study was to aid in the investigation of the feasibility of solar repowering of the reheat turbine using existing technologies. The dynamic response of the system to various cloud shadow velocities and cloud sizes was investigated. This analysis indicated that acceptable control of the reheat unit could be achieved for the cloud caused transients. 1 ref.

Hofer, D.A.; Pierce, B.L.

1981-01-01T23:59:59.000Z

49

Gas turbine procurement and combined-cycle repowering: 1986 workshop: Final report  

Science Conference Proceedings (OSTI)

Two workshops related to gas turbine utilization in the electric utility industry were held in Pittsburgh, Pennsylvania, on September 23-26, 1986. A total of 83 persons participated in the workshops, with 26 electric utilities represented by 44 of the participants. The balance of the participants included gas turbine manufacturers, architectural/engineering firms, EPRI representatives, and professional staff of Energy Systems Associates, the contractor for organizing and operating the workshops. The first workshop, ''Gas Turbine Procurement,'' included presentations on industrial gas turbines from four manufacturers, as well as presentations on specification, engineering, procurement, construction, instrumentation and control, and reliability, availability, and maintainability, as experienced by industry, engineering firms, and electric utilities. The second workshop, ''Combined Cycle Repowering,'' included presentations of repowering engineering feasibility studies by four electric utilities of selected generating stations, including one nuclear station under construction. Separate abstracts were prepared for 10 papers in this workshop.

Sanders, C.F.

1987-05-01T23:59:59.000Z

50

Edom Hills (repower) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Edom Hills (repower) Wind Farm Edom Hills (repower) Wind Farm Jump to: navigation, search Name Edom Hills (repower) Wind Farm Facility Edom Hills (repower) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner BP Alternative Energy Developer BP Alternative Energy Energy Purchaser Southern California Edison Co Location CA Coordinates 33.9095°, -116.734° 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":33.9095,"lon":-116.734,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

51

San Gorgonio Farms (repower) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

repower) Wind Farm repower) Wind Farm Jump to: navigation, search Name San Gorgonio Farms (repower) Wind Farm Facility San Gorgonio Farms (repower) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner San Gorgonio Farms Developer San Gorgonio Farms Location San Gorgonio CA Coordinates 33.9095°, -116.734° 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":33.9095,"lon":-116.734,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

52

Wabash River Coal Gasification Repowering Project Final Technical Report  

Office of Scientific and Technical Information (OSTI)

Wabash River Coal Gasification Wabash River Coal Gasification Repowering Project Final Technical Report August 2000 Work Performed Under Cooperative Agreement DE-FC21-92MC29310 For: The U.S. Department of Energy Office of Fossil Energy National Energy Technology Laboratory Morgantown, West Virginia Prepared by: The Men and Women of Wabash River Energy Ltd. For Further Information Contact: Roy A. Dowd, CHMM Environmental Supervisor Wabash River Coal Gasification Repowering Project 444 West Sandford Avenue West Terre Haute, IN 47885 LEGAL NOTICE/DISCLAIMER This report was prepared by the Wabash River Coal Gasification Repowering Project Joint Venture pursuant to a Cooperative Agreement partially funded by the U.S. Department of Energy, and neither the Wabash River Coal Gasification Repowering

53

RePower Bainbridge "Final Boarding Call" Event Results  

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

This story is just one example of how RePower's "Final Boarding Call" helped homeowners and our partners. By the end of this one-day event, Kitsap Credit Union and Puget...

54

Deadlock Avoidance for Sequential Resource Allocation Systems: Hard and Easy Cases  

E-Print Network (OSTI)

1 Deadlock Avoidance for Sequential Resource Allocation Systems: Hard and Easy Cases Mark Lawley is computationally hard, and numerous sub-optimal deadlock avoidance solutions have been proposed for this class and investigating the boundary between the hard and easy cases. We discuss several special structures that lead

Reveliotis, Spiridon "Spyros"

55

Combustion Engineering IGCC Repowering Project  

SciTech Connect

C-E gasification process uses an entrained-flow, two-stage, slagging bottom gasifier. Figure 1 shows a schematic of the gasifier concept. Some of the coal and all of the char is fed to the combustor section, while the remaining coal is fed to the reducter section of the gasifier. The coal and char in the combustor is mixed with air and the fuel-rich mixture is burned creating the high temperature necessary to gasify the coal and melt the mineral matter in the coal. The slag flows through a slag tap at the bottom of the combustor into a water-filled slag tank where it is quenched and transformed into an inert, glassy, granular material. This vitrified slag is non-leaching, making it easy to dispose of in an environmentally acceptable manner. The hot gas leaving the combustor enters the second stage called the reductor. In the reducter, the char gasification occurs along the length of the reductor zone until the temperature falls to a point where the gasification kinetics become too slow. Once the gas temperature reaches this level, essentially no further gasification takes place and the gases subsequently are cooled with convective surface to a temperature low enough to enter the cleanup system. Nearly all of the liberated energy from the coal that does not produce fuel gas is collected and recovered with steam generating surface either in the walls of the vessel or by conventional boiler convective surfaces in the backpass of the gasifier. A mixture of unburned carbon and ash (called char) is carried out of the gasifier with the product gas strewn. The char is collected and recycled back to the gasifier where it is consumed. Thus, there is no net production of char which results in negligible carbon loss. The product gas enters a desulfurization system where it is cleaned of sulfur compounds present in the fuel gas. The clean fuel gas is now available for use in the gas turbine combuster for an integrated coal gasification combined cycle (IGCC) application.

Andrus, H.E.; Thibeault, P.R.; Gibson, C.R.

1992-11-01T23:59:59.000Z

56

Combustion Engineering IGCC Repowering Project  

SciTech Connect

C-E gasification process uses an entrained-flow, two-stage, slagging bottom gasifier. Figure 1 shows a schematic of the gasifier concept. Some of the coal and all of the char is fed to the combustor section, while the remaining coal is fed to the reducter section of the gasifier. The coal and char in the combustor is mixed with air and the fuel-rich mixture is burned creating the high temperature necessary to gasify the coal and melt the mineral matter in the coal. The slag flows through a slag tap at the bottom of the combustor into a water-filled slag tank where it is quenched and transformed into an inert, glassy, granular material. This vitrified slag is non-leaching, making it easy to dispose of in an environmentally acceptable manner. The hot gas leaving the combustor enters the second stage called the reductor. In the reducter, the char gasification occurs along the length of the reductor zone until the temperature falls to a point where the gasification kinetics become too slow. Once the gas temperature reaches this level, essentially no further gasification takes place and the gases subsequently are cooled with convective surface to a temperature low enough to enter the cleanup system. Nearly all of the liberated energy from the coal that does not produce fuel gas is collected and recovered with steam generating surface either in the walls of the vessel or by conventional boiler convective surfaces in the backpass of the gasifier. A mixture of unburned carbon and ash (called char) is carried out of the gasifier with the product gas strewn. The char is collected and recycled back to the gasifier where it is consumed. Thus, there is no net production of char which results in negligible carbon loss. The product gas enters a desulfurization system where it is cleaned of sulfur compounds present in the fuel gas. The clean fuel gas is now available for use in the gas turbine combuster for an integrated coal gasification combined cycle (IGCC) application.

Andrus, H.E.; Thibeault, P.R.; Gibson, C.R.

1992-01-01T23:59:59.000Z

57

Devon station repowering study: Volume 2, Appendixes: Final report  

Science Conference Proceedings (OSTI)

The report presents the results of a site specific conceptual design and economic evaluation of a combined cycle repowering scheme for four non-reheat steam turbines. The site considered is the Devon Station of Connecticut Light and Power (CL and P) located in Milford, Connecticut. The first and major objective of the study from EPRI's perspective was to document the methodology of the study so that other utilities that may be planning similar studies in the future may benefit from knowledge developed in this study. The second objective was to select a repowering scheme and develop a site specific conceptual engineering design and associated budget capital and operating estimates. The third objective was to evaluate the feasibility of repowering the plant in stages. The fourth objective was to evaluate the economics of the repowering scheme as an alternative to other generating options. To meet the first objective, the study's team set up a screening approach to identify and evaluate all possible alternatives for repowering the four steam turbines and select the scheme for detailed engineering. To meet the second and third objectives, the project team prepared conceptual level capital cost estimates for both a complete dismantlement and reconstruction project. Although these estimates have been based on the Devon site, the data has been presented in a manner such that the technology may be evaluated at other sites. To meet the fourth objective, NUSCO evaluated the repowered plant against other generating options using a levelized bus bar analysis. In addition, NUSCO compared the repowered plant with a pulverized coal steam plant on a year-by-year basis over the forty year life of the plant.

Rorstrom, E.G.; Pishko, D.A.; Athas, J.G.

1988-04-01T23:59:59.000Z

58

Better Buildings Neighborhood Program: RePower Kitsap Helps S.T.A.R.  

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

RePower Kitsap RePower Kitsap Helps S.T.A.R. Program Gain Momentum in Washington to someone by E-mail Share Better Buildings Neighborhood Program: RePower Kitsap Helps S.T.A.R. Program Gain Momentum in Washington on Facebook Tweet about Better Buildings Neighborhood Program: RePower Kitsap Helps S.T.A.R. Program Gain Momentum in Washington on Twitter Bookmark Better Buildings Neighborhood Program: RePower Kitsap Helps S.T.A.R. Program Gain Momentum in Washington on Google Bookmark Better Buildings Neighborhood Program: RePower Kitsap Helps S.T.A.R. Program Gain Momentum in Washington on Delicious Rank Better Buildings Neighborhood Program: RePower Kitsap Helps S.T.A.R. Program Gain Momentum in Washington on Digg Find More places to share Better Buildings Neighborhood Program:

59

Buena Vista Wind Farm Repower | Open Energy Information  

Open Energy Info (EERE)

Repower Repower Jump to: navigation, search Name Buena Vista Wind Farm Repower Facility Buena Vista Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Babcock & Brown Developer Babcock & Brown Energy Purchaser Pacific Gas & Electric Co Location Altamont Pass CA Coordinates 37.7347°, -121.652° 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":37.7347,"lon":-121.652,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

60

Coram Energy (Aeroman Repower) Wind Farm I | Open Energy Information  

Open Energy Info (EERE)

Coram Energy (Aeroman Repower) Wind Farm I Coram Energy (Aeroman Repower) Wind Farm I Facility Coram Energy (Aeroman repower) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Coram Energy Developer Coram Energy Energy Purchaser Southern California Edison Co Location Tehachapi CA Coordinates 35.072998°, -118.264046° 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":35.072998,"lon":-118.264046,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "repower systems sequential" 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

Sequential Monte Carlo simulation for composite power system reliability analysis with time varying loads  

SciTech Connect

The paper illustrates the development and utilization of an annual chronological load curve for each load bus in a composite generation and transmission system and a sequential Monte Carlo simulation approach for composite system reliability assessment. Antithetic variates as a variance reduction technique has been applied to the simulation model to increase the efficiency of the simulation. An approximate method using a load duration curve of the system load and an enumeration process have been applied to the developed load model and the results are compared in this paper.

Sankarakrishnan, A.; Billinton, R. [Univ. of Saskatchewan, Saskatoon, Saskatchewan (Canada). Power Systems Research Group

1995-08-01T23:59:59.000Z

62

Advanced natural gas-fired turbine system utilizing thermochemical recuperation and/or partial oxidation for electricity generation, greenfield and repowering applications  

SciTech Connect

The performance, economics and technical feasibility of heavy duty combustion turbine power systems incorporating two advanced power generation schemes have been estimated to assess the potential merits of these advanced technologies. The advanced technologies considered were: Thermochemical Recuperation (TCR), and Partial Oxidation (PO). The performance and economics of these advanced cycles are compared to conventional combustion turbine Simple-Cycles and Combined-Cycles. The objectives of the Westinghouse evaluation were to: (1) simulate TCR and PO power plant cycles, (2) evaluate TCR and PO cycle options and assess their performance potential and cost potential compared to conventional technologies, (3) identify the required modifications to the combustion turbine and the conventional power cycle components to utilize the TCR and PO technologies, (4) assess the technical feasibility of the TCR and PO cycles, (5) identify what development activities are required to bring the TCR and PO technologies to commercial readiness. Both advanced technologies involve the preprocessing of the turbine fuel to generate a low-thermal-value fuel gas, and neither technology requires advances in basic turbine technologies (e.g., combustion, airfoil materials, airfoil cooling). In TCR, the turbine fuel is reformed to a hydrogen-rich fuel gas by catalytic contact with steam, or with flue gas (steam and carbon dioxide), and the turbine exhaust gas provides the indirect energy required to conduct the endothermic reforming reactions. This reforming process improves the recuperative energy recovery of the cycle, and the delivery of the low-thermal-value fuel gas to the combustors potentially reduces the NO{sub x} emission and increases the combustor stability.

1997-03-01T23:59:59.000Z

63

SEI uruguay project: Technical specifications. Turn-key' contract for La Tablada repowering. Export trade information  

Science Conference Proceedings (OSTI)

The study, conducted by Southern Electric International (SEI), was funded by the U.S. Trade and Development Agency on behalf of U.T.E., the Government of Uruguay's electric power company. It is an assessment of three potential projects under consideration by U.T.E. The changes resulting from these projects would add 120 to 360 megawatts capacity to the current system. The first option would involve repowering Jose Batlle y Ordonez Units 3 and 4. As an alternate to this plan, U.T.E. is considering a new combined cycle plant at a Greenfield site. The third project would increase capacity at La Tablada.

Not Available

1994-01-21T23:59:59.000Z

64

Saguaro Power Plant Solar Repowering Project. Volume I. Conceptual design. Final technical report, September 1979-July 1980  

DOE Green Energy (OSTI)

The conceptual design of a solar thermal central receiver repowered gas/oil fired steam-Rankine electrical power generation plant based on a central receiver using a molten salt (60% NaNO/sub 3/, 40% KNO/sub 3/, by wt) for repowering the No. One Unit of APS's Saguaro power plant is described in detail. The plant is located 66 km (41 mi) north of Tucson, Arizona. The selection of both the site and the molten salt central receiver promotes a near-term feasibility demonstration and cost-effective power production from an advanced solar thermal technology. The recommended system concept is to repower the existing electric power generating system at the maximum possible level (120 MW/sub e/ gross) using a field of 10,500 second-generation (49 m/sup 2/) heliostats and a storage capacity of 3.8 hours to be used for optimum dispatch of power to the utility system. The total project construction cost is estimated to be 167 million in 1980 dollars. The plant will be capable of displacing fossil energy equivalent to 4.9 million barrels of No. 6 oil in its first 10 years of operation. Detailed subsystem characteristics, an economic analysis, and a development plan are presented in detail. (WHK)

Weber, E.R.

1980-07-01T23:59:59.000Z

65

Sequential Window Diagnoser for Discrete-Event Systems Under Unreliable Observations  

SciTech Connect

This paper addresses the issue of counting the occurrence of special events in the framework of partiallyobserved discrete-event dynamical systems (DEDS). Developed diagnosers referred to as sequential window diagnosers (SWDs) utilize the stochastic diagnoser probability transition matrices developed in [9] along with a resetting mechanism that allows on-line monitoring of special event occurrences. To illustrate their performance, the SWDs are applied to detect and count the occurrence of special events in a particular DEDS. Results show that SWDs are able to accurately track the number of times special events occur.

Wen-Chiao Lin; Humberto E. Garcia; David Thorsley; Tae-Sic Yoo

2009-09-01T23:59:59.000Z

66

Wabash River coal gasification repowering project: Public design report  

SciTech Connect

The Wabash River Coal Gasification Repowering Project (the Project), conceived in October of 1990 and selected by the US Department of Energy as a Clean Coal IV demonstration project in September 1991, is expected to begin commercial operations in August of 1995. The Participants, Destec Energy, Inc., (Destec) of Houston, Texas and PSI Energy, Inc., (PSI) of Plainfield, Indiana, formed the Wabash River Coal Gasification Repowering Project Joint Venture (the JV) to participate in the DOE`s Clean Coal Technology (CCT) program by demonstrating the coal gasification repowering of an existing 1950`s vintage generating unit affected by the Clean Air Act Amendments (CAAA). The Participants, acting through the JV, signed the Cooperative Agreement with the DOE in July 1992. The Participants jointly developed, and separately designed, constructed, own, and will operate an integrated coal gasification combined cycle (CGCC) power plant using Destec`s coal gasification technology to repower Unit {number_sign}1 at PSI`s Wabash River Generating Station located in Terre Haute, Indiana. PSI is responsible for the new power generation facilities and modification of the existing unit, while Destec is responsible for the coal gasification plant. The Project demonstrates integration of the pre-existing steam turbine generator, auxiliaries, and coal handling facilities with a new combustion turbine generator/heat recovery steam generator tandem and the coal gasification facilities.

1995-07-01T23:59:59.000Z

67

Windy Point - REpower (09) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Point - REpower (09) Wind Farm Point - REpower (09) Wind Farm Jump to: navigation, search Name Windy Point - REpower (09) Wind Farm Facility Windy Point - REpower (09) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Cannon/Tuolumne Wind Project Authority Developer Cannon/Tuolumne Wind Project Authority Energy Purchaser Turlock Irrigation District and Walnut Energy Center Authority Location North shore of Columbia River Coordinates 45.699622°, -120.774622° 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":45.699622,"lon":-120.774622,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

68

Pressurized Circulating Fluidized Bed (PCFB) Repowering Project. Annual report, August 1991--December 1992  

SciTech Connect

This report provides a summary of activities, by the DMEC-1 Limited Partnership on the PCFB Repowering Project from project initiation in August 1991 through December 1992. The DMEC-1 project will demonstrate ``First Generation`` PCFB technology and will result in an existing steam turbine being repowered with steam from a PCFB boiler. Exhaust gases from the PCFB boiler will be expanded through a gas turbine to provide additional power output. The preliminary design is progressing. As the design is refined and modified, cost and schedule baselines will be updated. Environmental information has been obtained and submitted to The Department of Energy (DOE) with no obvious problems or concerns identified. Testing analysis and evaluations of systems continue. A key feature of design verification testing has been and will continue to be the testing of ceramic barrier filtration technologies including the Asahi Advanced Ceramic Tube Filter (ACTF) and Westinghouse`s Candle Filter. At the time of this report testing has been completed on the Asahi ACTF and tests have been initiated on the Westinghouse filters. In general terms, the Asahi design was successful in reducing the outlet dust loading to required levels but certain problems were encountered which led to some premature ceramic tube failures.

1993-04-01T23:59:59.000Z

69

Expert system for identification of simultaneous and sequential reactor fuel failures with gas tagging  

DOE Patents (OSTI)

Failure of a fuel element in a nuclear reactor core is determined by a gas tagging failure detection system and method. Failures are catalogued and characterized after the event so that samples of the reactor's cover gas are taken at regular intervals and analyzed by mass spectroscopy. Employing a first set of systematic heuristic rules which are applied in a transformed node space allows the number of node combinations which must be processed within a barycentric algorithm to be substantially reduced. A second set of heuristic rules treats the tag nodes of the most recent one or two leakers as "background" gases, further reducing the number of trial node combinations. Lastly, a "fuzzy" set theory formalism minimizes experimental uncertainties in the identification of the most likely volumes of tag gases. This approach allows for the identification of virtually any number of sequential leaks and up to five simultaneous gas leaks from fuel elements.

Gross, Kenny C. (Bolingbrook, IL)

1994-01-01T23:59:59.000Z

70

Stoney Corners - REpower Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Wind Farm Wind Farm Jump to: navigation, search Name Stoney Corners - REpower Wind Farm Facility Stoney Corners - REpower Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Heritage Sustainable Energy Developer Heritage Sustainable Energy Location McBain MI Coordinates 44.20823°, -85.27371° 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":44.20823,"lon":-85.27371,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

71

City of Bainbridge Island - (Re)Power Bainbridge Rebate Program  

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

You are here You are here Home » City of Bainbridge Island - (Re)Power Bainbridge Rebate Program (Washington) City of Bainbridge Island - (Re)Power Bainbridge Rebate Program (Washington) < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Sealing Your Home Ventilation Heat Pumps Appliances & Electronics Water Heating Program Info State District of Columbia Program Type Local Rebate Program Rebate Amount Attic Insulation: $.25 per sq/ft up to $400 Wall Insulation: $.25 per sq/ft up to $400 Floor Insulation: $.25 per sq/ft up to $400 Duct Insulation: $.25 per sq/ft up to $400 Whole House Air Sealing: $300 Hot Water Boiler: $300 Steam Boiler: $300 Furnace: $200 Furnace with EMC: $300

72

Demonstration Development Project: Assessment of Biomass Repowering Options for Utilities  

Science Conference Proceedings (OSTI)

This report has been prepared to help organizations with fossil-fired generation assets better understand their options for taking advantage of biomass-derived fuels at existing facilities. It considers plant conversions that completely replace fossil fuels through repowering as well as options that focus on high-percentage cofiring of biomass along with fossil fuels. Drawing on the experiences of operating facilities that have converted to biomass and from prior work, the analysis underlying this report...

2010-12-17T23:59:59.000Z

73

Conceptual Design Review for Biomass Repowering at Plant Sweatt  

Science Conference Proceedings (OSTI)

Southern Company and its subsidiary Mississippi Power have identified Plant Sweatt as a potential opportunity for biomass repowering. Plant Sweatt is located in Meridian, Mississippi, and became commercially operational in 1953. The facility is capable of generating up to 96 MW of electricity (gross), operating on natural gas. Net generation at full load is about 92 MW. With a relatively high heat rate for a premium fuel, the plant is rarely dispatched. Modifying one of the boilers at Plant Sweatt to bu...

2010-12-31T23:59:59.000Z

74

Conceptual Design Review for Biomass Repowering at Plant Mitchell  

Science Conference Proceedings (OSTI)

Plant Mitchell Unit 3 is a 165-MW (gross) pulverized-coal-fired boiler located in Albany, Georgia. Unit 3 began operations in 1964 and8211due to tightening environmental requirements and relatively high operating costs8211the plant is presently scheduled for closure within the next decade. In response to anticipated increased demand/requirements for renewable power generation, Southern Company / Georgia Power is conducting a study to determine the feasibility of repowering the plant to be fueled entirely...

2010-12-09T23:59:59.000Z

75

Design as you see FIT: system-level soft error analysis of sequential circuits  

Science Conference Proceedings (OSTI)

Soft errors in combinational and sequential elements of digital circuits are an increasing concern as a result of technology scaling. Several techniques for gate and latch hardening have been proposed to synthesize circuits that are tolerant to soft ...

Daniel Holcomb; Wenchao Li; Sanjit A. Seshia

2009-04-01T23:59:59.000Z

76

Expert system for identification of simultaneous and sequential reactor fuel failures with gas tagging  

DOE Patents (OSTI)

Failure of a fuel element in a nuclear reactor core is determined by a gas tagging failure detection system and method. Failures are catalogued and characterized after the event so that samples of the reactor's cover gas are taken at regular intervals and analyzed by mass spectroscopy. Employing a first set of systematic heuristic rules which are applied in a transformed node space allows the number of node combinations which must be processed within a barycentric algorithm to be substantially reduced. A second set of heuristic rules treats the tag nodes of the most recent one or two leakers as background'' gases, further reducing the number of trial node combinations. Lastly, a fuzzy'' set theory formalism minimizes experimental uncertainties in the identification of the most likely volumes of tag gases. This approach allows for the identification of virtually any number of sequential leaks and up to five simultaneous gas leaks from fuel elements. 14 figs.

Gross, K.C.

1994-07-26T23:59:59.000Z

77

Preliminary design of a solar central receiver for a site-specific repowering application (Saguaro Power Plant). Volume 1. Executive summary. Final report, October 1982-September 1983  

DOE Green Energy (OSTI)

The preliminary design of a solar central receiver repowered gas/oil fired steam-Rankine cycle electric power generation plant was completed. The design is based on a central receiver technology using molten salt (60% NaNO/sub 3/, 40% KNO/sub 3/, by weight) for the heat transport and thermal storage fluid. Unit One of APS's Saguaro power plant located 43 km (27 mi) northwest of Tucson, AZ, is to be repowered. The selection of both the site and the molten salt central receiver promotes a near-term feasibility demonstration and cost-effective power production from an advanced solar thermal technology. The recommended system concept is to repower the existing electric power generating system at the minimum useful level (66 MW/sub e/ gross) using a field of 4850 Martin Marietta second-generation (58.5 m/sup 2/) heliostats and a storage capacity of 4.0 hours. The storage capacity will be used to optimize dispatch of power to the utility system. The preliminary design was based on the use of the systems approach to design where the overall project was divided into systems, each of which is clearly bounded, and performs specific functions. The total project construction cost was estimated to be 213 million in 1983 dollars. The plant will be capable of displacing fossil energy equivalent to 2.4 million barrels of No. 6 oil in its first 10 years of operation.

Weber, E.R.

1983-09-01T23:59:59.000Z

78

Devon Station repowering study: Volume 1, Summary and results: Final report  

Science Conference Proceedings (OSTI)

The report presents the results of a site specific conceptual design and economic evaluation of a combined cycle repowering scheme for four nonreheat steam turbines. The first and major objective of the study from EPRI's perspective was to document the methodology of the study so that other utilities that may be planning similar studies in the future may benefit from knowledge developed in this study. The second objective was to select a repowering scheme and develop a site specific conceptual engineering design and associated budget capital and operating estimates. The third objective was to evaluate the feasibility of repowering the plant in stages. The fourth objective was to evaluate the economics of the repowering scheme as an alternative to other generating options. To meet the first objective, the study's team set up a screening approach to identify and evaluate all possible alternatives for repowering the four steam turbines and select the scheme for detailed engineering. To meet the second and third objectives, the project team prepared conceptual level capital cost estimates for both a complete dismantlement and reconstruction project. To meet the fourth objective, NUSCO evaluated the repowered plant against other generating options using a levelized bus bar analysis. In addition, NUSCO compared the repowered plant with a pulverized coal steam plant on a year-by-year basis over the forty year life of the plant. 24 tabs.

Rorstrom, E.G.; Pishko, D.A.; Athas, J.G.

1988-04-01T23:59:59.000Z

79

PCFB repowering project. Annual report, January--December 1993  

SciTech Connect

This report will provide an overview discussion of the {open_quotes}First Generation{close_quotes} Pressurized Circulating Fluidized Bed (PCFB) technology planned for demonstration at DMEC-1. The PCFB Repowering project will demonstrate {open_quotes}First Generation{close_quotes} PCFB technology where steam generated in a PCFB boiler will be used to power a steam turbine and exhaust gases from the PCFB boiler will be expanded through a gas turbine to provide additional power output. The status of each of the activities that have been carried out during the first budget period of the project, primarily in 1993 (including filter testing) will be reviewed.

1994-04-01T23:59:59.000Z

80

Externally-fired combined cycle: An effective coal fueled technology for repowering and new generation  

SciTech Connect

The Externally-Fired Combined Cycle (EFCC) is an attractive emerging technology for powering high efficiency combined gas and steam turbine cycles with coal or other ash bearing fuels. In the EFCC, the heat input to a gas turbine is supplied indirectly through a ceramic air heater. The air heater, along with an atmospheric coal combustor and ancillary equipment, replaces the conventional gas turbine combustor. A steam generator located downstream from the ceramic air heater and steam turbine cycle, along with an exhaust cleanup system, completes the combined cycle. A key element of the EFCC Development Program, the 25 MMBtu/h heat-input Kennebunk Test Facility (KTF), has recently begun operation. The KTF has been operating with natural gas and will begin operating with coal in early 1995. The US Department of Energy selected an EFCC repowering of the Pennsylvania Electric Company`s Warren Station for funding under the Clean Coal Technology Program Round V. The project focuses on repowering an existing 48 MW (gross) steam turbine with an EFCC power island incorporating a 30 MW gas turbine, for a gross power output of 78 MW and a net output of 72 MW. The net plant heat rate will be decreased by approximately 30% to below 9,700 Btu/kWh. Use of a dry scrubber and fabric filter will reduce sulfur dioxide (SO{sub 2}) and particulate emissions to levels under those required by the Clean Air Act Amendments (CAAA) of 1990. Nitrogen oxides (NO{sub x}) emissions are controlled by the use of staged combustion. The demonstration project is currently in the engineering phase, with startup scheduled for 1997. This paper discusses the background of the EFCC, the KTF, the Warren Station EFCC Clean Coal Technology Demonstration Project, the commercial plant concept, and the market potential for the EFCC.

Stoddard, L.E.; Bary, M.R. [Black and Veatch, Kansas City, MO (United States); Gray, K.M. [Pennsylvania Electric Co., Johnstown, PA (United States); LaHaye, P.G. [Hague International, South Portland, ME (United States)

1995-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Preliminary design of a solar central receiver for site-specific repowering application (Saguaro Power Plant). Volume II. Preliminary design. Final report, October 1982-September 1983  

DOE Green Energy (OSTI)

The solar central receiver technology, site, and specific unit for repowering were selected in prior analyses and studies. The objectives of this preliminary design study were to: develop a solar central receiver repowering design for Saguaro that (1) has potential to be economically competitive with fossil fueled plants in near and long term applications, (2) has the greatest chance for completion without further government funding, (3) will further define technical and economic feasibility of a 66 MWe gross size plant that is adequate to meet the requirements for utility and industrial process heat applications, (4) can potentially be constructed and operated within the next five years, and (5) incorporates solar central receiver technology and represents state-of-the-art development. This volume on the preliminary design includes the following sections: executive summary; introduction; changes from advanced conceptual design; preliminary design; system characteristics; economic analysis; and development plan.

Weber, E.R.

1983-09-01T23:59:59.000Z

82

Third-party financing of central-receiver repowering projects  

DOE Green Energy (OSTI)

An innovative third party financing approach for the first solar thermal repowering plants is investigated that may reduce the need for direct DOE cost sharing during the early application of central receiver technology by industry. Third party refers to a corporation, partnership, or a joint venture that can take advantage of existing financial incentives. The available financial incentives are summarized, including the guaranteed market for central receiver power provided by Section 210 of the Public Utility Regulatory Policy Act, and federal and state tax credits and depreciation schedules. The economics of third party central receiver repowering plant financing is analyzed, and the case history of the Arizona Public Service Utility Saguaro Plant No. 1 is used as an example. Finally, a sensitivity analysis examines the effects of variations of different financial parameters on the return on investment. It is found that a substantial portion of investment equity can be recovered in the first few years of plant operation, and good future years cash flows appear possible. Third party financing appears capable of helping stimulate mass production of heliostats and a rapid transfer of central receiver technology to utilities and industry, with attending economic benefits. (LEW)

Munjal, P. K.; Walter, J.; Mathur, P. N.

1981-12-01T23:59:59.000Z

83

Innotech Solar AS formerly known as Solar Cell Repower | Open Energy  

Open Energy Info (EERE)

Innotech Solar AS formerly known as Solar Cell Repower Innotech Solar AS formerly known as Solar Cell Repower Jump to: navigation, search Name Innotech Solar AS (formerly known as Solar Cell Repower) Place Narvik, Norway Zip 8512 Sector Solar Product Norway-based developer of repowering technologies for solar cells. Coordinates 68.439515°, 17.43015° 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":68.439515,"lon":17.43015,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

84

DOE/NETL-2002/1164 Wabash River Coal Gasification Repowering...  

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

4 Wabash River Coal Gasification Repowering Project: A DOE Assessment January 2002 U.S. Department of Energy National Energy Technology Laboratory P.O. Box 880, 3610 Collins Ferry...

85

Sei Vojany Station Repowering reconstruction assessment feasibility study. Volume 6. Export trade information  

SciTech Connect

The volume contains the appendices of the Vojany Station Repowering assessment project. They include site plan drawings, combustion calculations and typical reagent analysis, emission reduction and testing, scope of supply, and Czech and Slovak Federative Republic (CSFR) air pollution laws.

Not Available

1992-01-01T23:59:59.000Z

86

Sei Vojany Station repowering reconstruction assessment feasibility study. Volume 3. Export trade information  

Science Conference Proceedings (OSTI)

The feasibility study conducted for Slovensky Energeticky Podnik(Slovak Energy Production Company) (SEP) evaluates reconstruction, repowering, and expansion of SEP's Vojany Station(EVO). The study recommends a training program for government and plant officials.

Not Available

1992-01-01T23:59:59.000Z

87

NREL: Wind Research - Re-Powering a Wind Farm: Wind Powering...  

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

Re-Powering a Wind Farm: Wind Powering America Lessons Learned August 12, 2013 Some wind farms in the United States are nearing the end of their 20-plus-year lifetimes, increasing...

88

Repowering Fossil Steam Plants with Gas Turbines and Heat Recovery Steam Generators: Design Considerations, Economics, and Lessons L earned  

Science Conference Proceedings (OSTI)

This report describes repowering fossil steam plants using gas turbines (GTs) and heat recovery steam generators (HRSGs) in combined-cycle mode. Design considerations and guidance, comparative economics, and lessons learned in the development of such projects are included. Various other methods of fossil plant repowering with GTs are also briefly discussed. The detailed results and comparisons that are provided relate specifically to a generic GT/HRSG repowering. Design parameters, limitations, schedulin...

2012-08-08T23:59:59.000Z

89

APFBC Repowering Evaluations at the Sheldon and Greenidge Steam Stations Show the Flexibility of APFBC Technology in Different Applications  

E-Print Network (OSTI)

Advanced circulating pressurized fluidized-bed combustion combined cycle (APFBC) technology is a coal-fired technology now under test in large-scale demonstrations. As these tests progress, coalfired APFBC should become ready for commercial repowering installations around year 2005, making this an appropriate time to begin investigating commercial feasibility. This paper describes a conceptual design evaluation effort that assessed the merits of APFBC repowering at two different coal-fired steam generating stations. The paper shows that APFBC combined cycles have a number of features that make it a more flexible plant repowering option, since unlike natural gas repowering, APFBC combined cycles easily match existing superheat and reheat steam conditions.

Kevin A. Largis; Richard E. Weinstein; Douglas J. Roll; Power Gen International; Robert W. Travers

1999-01-01T23:59:59.000Z

90

Coram Energy (Aeroman Repower) Wind Farm II | Open Energy Information  

Open Energy Info (EERE)

II II Facility Coram Energy (Aeroman repower) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Coram Energy Developer Coram Energy Energy Purchaser Southern California Edison Co Location Tehachapi CA Coordinates 35.072998°, -118.264046° 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":35.072998,"lon":-118.264046,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

91

CE IGCC Repowering plant sulfuric acid plant. Topical report, June 1993  

SciTech Connect

A goal of the CE IGCC Repowering project is to demonstrate a hot gas clean-up system (HGCU), for the removal of sulfur from the product gas stream exiting the gasifier island. Combustion Engineering, Inc. (ABB CE) intends to use a HGCU developed by General Electric Environmental Services (GEESI). The original design of this system called for the installation of the HGCU, with a conventional cold gas clean-up system included as a full-load operational back-up. Each of these systems removes sulfur compounds and converts them into an acid off-gas. This report deals with the investigation of equipment to treat this off-gas, recovering these sulfur compounds as elemental sulfur, sulfuric acid or some other form. ABB CE contracted ABB Lummus Crest Inc. (ABB LCI) to perform an engineering evaluation to compare several such process options. This study concluded that the installation of a sulfuric acid plant represented the best option from both a technical and economic point of view. Based on this evaluation, ABB CE specified that a sulfuric acid plant be installed to remove sulfur from off-gas exiling the gas clean-up system. ABB LCI prepared a request for quotation (RFQ) for the construction of a sulfuric acid production plant. Monsanto Enviro-Chem Inc. presented the only proposal, and was eventually selected as the EPC contractor for this system.

Chester, A.M.

1993-12-01T23:59:59.000Z

92

Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) Repowering Concept Assessment at Duke Energy's Dan River Station  

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

Wolfmeyer et al. APFBC Repowering Assessment at Duke Energy's Dan River Station Wolfmeyer et al. APFBC Repowering Assessment at Duke Energy's Dan River Station paper 970561 Page 1 of 36 Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) Repowering Concept Assessment at Duke Energy's Dan River Station John C. Wolfmeyer, P.E., and Cal Jowers, P.E. Duke Energy / Charlotte, North Carolina Richard E. Weinstein, P.E., Harvey N. Goldstein, P.E., and Jay S. White Parsons Power Group Inc. / Reading, Pennsylvania Robert W. Travers, P.E. U.S. Department of Energy Office of Fossil Energy / Germantown, Maryland electronic mail addresses/phone no. electronic mail addresses/phone no. Wolfmeyer { JCWolfme@Duke-Energy.COM 704 / 382-4017 Goldstein { Harvey_N_Goldstein@Parsons.COM 610 / 855-3281 Jowers { -- 704 / 382-9577 White { Jay_S_White@Parsons.COM

93

APFBC Repowering for Four Corners Station Units 1, 2, and 3  

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

APFBC REPOWERING FOR FOUR CORNERS STATION UNITS 1, 2, AND 3 APFBC REPOWERING FOR FOUR CORNERS STATION UNITS 1, 2, AND 3 D. Craig Walling Arizona Public Service Company Fruitland, New Mexico eMail: cwalling@apsc.com phone: (505) 598-8200 Richard E. Weinstein, P.E. Parsons Infrastructure & Technology Group Inc. Reading, Pennsylvania eMail: richard.e.weinstein@parsons.com phone: (610) 855-2699 Mark D. Freier, Ph.D. U.S. DOE National Energy Technology Laboratory Morgantown, West Virginia eMail: mfreier@netl.doe.gov phone: (304) 285-4759 Walter F. Coles, P.E. Parsons Energy & Chemicals Group Inc. Reading, Pennsylvania eMail: walter.f.coles@parsons.com phone: (610) 855-2077 Abstract This paper describes a feasibility assessment that evaluated whether advanced circulating pressurized fluidized-bed combustion combined cycle (APFBC) repowering made sense at the

94

Evaluation of Suitability of Selected Set of Coal Plant Sites for Repowering with Small Modular Reactors  

SciTech Connect

This report summarizes the approach that ORNL developed for screening a sample set of small coal stations for possible repowering with SMRs; the methodology employed, including spatial modeling; and initial results for these sample plants. The objective in conducting this type of siting evaluation is to demonstrate the capability to characterize specific sample coal plant sites to identify any particular issues associated with repowering existing coal stations with SMRs using OR-SAGE; it is not intended to be a definitive assessment per se as to the absolute suitability of any particular site.

Belles, Randy [ORNL; Copinger, Donald A [ORNL; Mays, Gary T [ORNL; Omitaomu, Olufemi A [ORNL; Poore III, Willis P [ORNL

2013-03-01T23:59:59.000Z

95

Sei Vojany Station repowering reconstruction-assessment feasibility study. Volume 1. Export trade information  

SciTech Connect

The feasibility study conducted for Slovensky Energeticky Podnik (Slovak Energy Production Company) (SEP) evaluates reconstruction, repowering, and expansion of SEP's Vojany Station (EVO). Previous evaluations, studies, station records, and technical data were reviewed and utilized as a part of the feasibility analysis. The study results recommend a time-phased implementation for the recommended solutions.

Not Available

1992-01-01T23:59:59.000Z

96

Southwestern Public Service Company Solar Repowering Program. Volume 1. Conceptual design and evaluation. Final technical report  

DOE Green Energy (OSTI)

The detailed conceptual design, subsystem characteristics, economic analysis, development plan, and user's assessment of repowering Southwest Public Service Company's Plant X located south of Amarillo, Texas, with a tower focus power plant are presented. The plant will utilize liquid sodium heat transfer fluids, thermal storage tanks, and a steam generator/turbine. Detailed economic and cost data are included. (WHK)

Not Available

1980-07-01T23:59:59.000Z

97

A SpaceTime Multiscale Analysis System: A Sequential Variational Analysis Approach  

Science Conference Proceedings (OSTI)

As new observation systems are developed and deployed, new and presumably more precise information is becoming available for weather forecasting and climate monitoring. To take advantage of these new observations, it is desirable to have schemes ...

Y. Xie; S. Koch; J. McGinley; S. Albers; P. E. Bieringer; M. Wolfson; M. Chan

2011-04-01T23:59:59.000Z

98

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

SciTech Connect

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

Rives, J.D.; Catina, J.

1987-05-01T23:59:59.000Z

99

Technical and economic assessment of solar hybrid repowering: conceptual design and cost estimate  

DOE Green Energy (OSTI)

Reeves Unit No. 2 in Albuquerque, New Mexico, was established as the potential candidate plant for solar hybrid repowering. Under this conceptual design and cost estimate task, this plant was investigated to provide a reasonable definitive design and to identify the modifications required. The existing land situation, as well as the particular environmental aspects of Reeves Unit No. 2, was investigated. Upon complete definition a cost estimate was prepared which is relatable to the present configuration of Reeves Unit No. 2. A definition of all significant changes in the plant to accommodate the addition of the solar facilities, as well as the establishment of the integration of the control systems, was determined and estimated. A field was laid out using the MIRVAL program and established the power level that was available from a given configuration. Environmental aspects such as rainfall, cloud cover, dust, traffic hazards and others were considered in the conceptual design of this unit. A design utilizing 4289 heliostats in a field to the south of the existing station was conceived. The tower was set in the southern half of an oval teardrop shaped field with access roads, fencing, relocation of existing facilities and potential for maintenance of the solar facilities established. Further revisions and runs in MIRVAL varied the actual available heliostats to a finer degree; however, the 4289 heliostat power level was the basis used throughout for the potential power level. The potential problems were identified and various solutions defined with trade studies and engineering analysis. This conceptual design was developed to a level to establish a construction and program cost estimate.

None

1978-09-01T23:59:59.000Z

100

Repowering of lenenergo severnaya TETS-21 with lm6000 gas turbine. Export trade information  

SciTech Connect

The study, conducted by Joseph Technology Corporation, was funded by the U.S. Trade and Development Agency. The report shows the results of a feasibility study done for the proposed repowering of the Severnaya TETS-21 power plant. The study includes various alternatives for the repowering, as well as an assessment of existing equipment and performance specifications needed to complete the project. The report is divided into the following sections: Executive Summary (1) Introduction; (2) Assessment of Existing Equipment; (3) Combined Cycle Evaluation; (4) Economic Analysis; (5) Impact of Environment. Appendices 1-4 follows the main body of the report. The study contains a second portion which is the Russian translation of the report.

NONE

1995-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Technical considerations in repowering a nuclear plant for fossil fueled operation  

SciTech Connect

Repowering involves replacement of the reactor by a fossil fuel source of steam. This source can be a conventional fossil fueled boiler or the heat recovery steam generator (HRSG) on a gas turbine exhaust. The existing steam turbine plant is used to the extent possible. Alternative fuels for repowering a nuclear plant are coal, natural gas and oil. In today`s world oil is not usually an alternative. Selection of coal or natural gas is largely a matter of availability of the fuel near the location of the plant. Both the fossil boiler and the HRSG produce steam at higher pressures and temperatures than the throttle conditions for a saturated steam nuclear turbine. It is necessary to match the steam conditions from the new source to the existing turbine as closely as possible. Technical approaches to achieve a match range from using a topping turbine at the front end of the cycle to attemperation of the throttle steam with feedwater. The electrical output from the repowered plant is usually greater than that of the original nuclear fueled design. This requires consideration of the ability to use the excess electricity. Interfacing of the new facility with the existing turbine plant requires consideration of facility layout and design. Site factors must also be considered, especially for a coal fired boiler, since rail and coal handling facilities must be added to a site for which these were not considered. Additional site factors that require consideration are ash handling and disposal.

Patti, F.J.

1996-03-01T23:59:59.000Z

102

Feasibility Study for the Ivano-Frankivsk District Heating Repowering: Analysis of Options  

Science Conference Proceedings (OSTI)

Part of the U.S. Initiative on Joint Implementation with the Ukraine Inter-Ministerial Commission on Climate Change, financed by the US Department of Energy. The project was implemented by a team consisting of the US company SenTech, Inc. and the Ukrainian company Esco-West. The main objective of the effort was to assess available alternatives of Ivano-Frankivsk (I-F) District Heating repowering and provide information for I-F's investment decision process. This study provides information on positive and negative technical and economic aspects of available options. Three options were analyzed for technical merit and economic performance: 1. Installation of cogeneration system based on Gas Turbine (GT) and Heat Recovery Heat Exchanger with thermal capacity of 30 MW and electrical capacity of 13.5 MW. This Option assumes utilization of five existing boilers with total capacity of 221 MW. Existing boilers will be equipped with modern controls. Equipment in this Option was sized for longest operating hours, about 8000 based on the available summer baseload. 2. Installation of Gas Turbine Combined Cycle (GTCC) and Heat Recovery Steam Generator (HRSG) with thermal capacity 45 MW and electrical capacity of 58.7 MW. This Option assumes utilization of five existing boilers with total capacity of 221 MW. Existing boilers will be equipped with modern controls. The equipment was sized for medium, shoulder season thermal load, and some cooling was assumed during the summer operation for extension of operating hours for electricity production. 3. Retrofit of six existing boilers (NGB) with total thermal capacity of 255.9 MW by installation of modern control system and minor upgrades. This option assumes only heat production with minimum investment. The best economic performance and the largest investment cost would result from alternative GTCC. This alternative has positive Net Present Value (NPV) with discount rate lower than about 12%, and has IRR slightly above 12%. The lowest economic results, and the lowest required investment, would result from alternative NGB. This Option's NPV is negative even at 0% discount rate, and would not become positive even by improving some parameters within a reasonable range. The Option with Gas Turbine displays relatively modest results and the NPV is positive for low discount rate, higher price of sold electricity and lower cost of natural gas. The IRR of this alternative is 9.75%, which is not very attractive. The largest influences on the investment are from the cost of electricity sold to the grid, the heat tariff, and the cost of natural gas. Assuming the implementation of the GTCC alternative, the benefit of the project is also reflected in lower Green House Emissions.

Markel, L.; Popelka, A.; Laskarevsky, V.

2002-03-20T23:59:59.000Z

103

CE IGCC repowering project: Clean Coal II Project. Annual report, 1 January, 1992--31 December, 1992  

SciTech Connect

CE is participating in a $270 million coal gasification combined cycle repowering project that will provide a nominal 60 MW of electricity to City, Water, light and Power (CWL and P) in Springfield, Illinois. The IGCC system will consist of CE`s air-blown entrained flow two-stage gasifier; an advanced hot gas cleanup system; a combustion turbine adapted to use low-Btu gas: and all necessary coal handling equipment. The project is currently in the second budget period of five. The major activities during this budgeted period are: Establishment of an approved for design (AFD) engineering package; development of a detailed cost estimate; resolution of project business issues; CWL and P renewal and replacement activities; and application for environmental air permits. The Project Management Plan was updated. The conceptual design of the plant was completed and a cost and schedule baseline for the project was established previously in Budget Period One. This information was used to establish AFD Process Flow Diagrams, Piping and Instrument Diagrams, Equipment Data Sheets, material take offs, site modification plans and other information necessary to develop a plus or minus 20% cost estimate. Environmental permitting activities are continuing. At the end of 1992 the major activities remaining for Budget Period two is to finish the cost estimate and complete the Continuation Request Documents.

Not Available

1993-12-01T23:59:59.000Z

104

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Vincent Mullins Landfill in Tucson, Arizona. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Vincent Mullins Landfill in Tucson, Arizona, for a feasibility study of renewable energy production. Under the RE-Powering America's Land initiative, the EPA provided funding to the National Renewable Energy Laboratory (NREL) to support the study. NREL provided technical assistance for this project but did not assess environmental conditions at the site beyond those related to the performance of a photovoltaic (PV) system. The purpose of this report is to assess the site for a possible PV installation and estimate the cost and performance of different PV configurations, as well as to recommend financing options that could assist in the implementation of a PV system. In addition to the Vincent Mullins site, four similar landfills in Tucson are included as part of this study.

Steen, M.; Lisell, L.; Mosey, G.

2013-01-01T23:59:59.000Z

105

A Look to the Future: Solar Repowering for Tomorrow's Energy Needs  

E-Print Network (OSTI)

One provision of the National Energy Act of 1978 is to restrict the use of oil and natural gas in industrial boilers. In order to research methods of providing alternate fuel sources for the boilers, the Department of Energy initiated a program to investigate the technical feasibility and cost effectiveness of central solar thermal energy technology. Projected development of this program includes studies of utility and industrial sites for application and the possibility of constructing one or more demonstration sites. The paper will discuss current solar central receiver technology, specifically outlining a feasibility study of the solar repowering concept by Texas Electric Service Company and Rockwell International.

Wendt, M.

1980-01-01T23:59:59.000Z

106

Lamar repowering project's creative modeling of old and new wins Marmaduke award  

Science Conference Proceedings (OSTI)

Lamar Light and Power is a municipal utility that has been generating the south eastern Colorado city's electricity since 1920. Rising natural gas and oil costs pushed LL & P to retire its steam plant five years ago and begin hunting for more economic power sources. The answer: repower the existing plant with a state-of-the-art coal-fired circulating fluidized-bed combustor and cross-connect old and new steam turbines. The 120 million dollar project will stabilize the region's electricity rates for many years to come. 10 figs. 1 tab.

Peltier, R.

2008-08-15T23:59:59.000Z

107

Feasibility Study of Economics and Performance of a Hydroelectric Installation at the Jeddo Mine Drainage Tunnel. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Jeddo Tunnel discharge site for a feasibility study of renewable energy potential. The purpose of this report is to assess technical and economic viability of the site for hydroelectric and geothermal energy production. In addition, the report outlines financing options that could assist in the implementation of a system.

Roberts, J. O.; Mosey, G.

2013-02-01T23:59:59.000Z

108

Feasibility Study of Economics and Performance of Biopower at the Chanute Air Force Base in Rantoul, Illinois. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Chanute Air Force Base site in Rantoul, Illinois, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) was contacted to provide technical assistance for this project. The purpose of this study was to assess the site for a possible biopower system installation and estimate the cost, performance, and impacts of different biopower options.

Scarlata, C.; Mosey, G.

2013-05-01T23:59:59.000Z

109

Feasibility study for combustion-turbine repowering of North Bangkok Units 1, 2, and 3. Volume 1. Study report. Export trade information  

SciTech Connect

The volume is the first of a two part final report submitted to the Thai Electricity Generating Authority (EGAT). The report documents a study that examined the feasibility of partially repowering North Bangkok Units 1, 2, and 3 with residual oil-fired combustion turbines. The study examined three options for repowering: feedwater heating, hot windbox and cold windbox. In addition to discussing each of these three options, the report examines site specific factors, such as the remaining life of the equipment and power transmission capacity. Cost estimates for the repowering options are provided. Projected steam plant performance changes are analyzed.

1991-09-01T23:59:59.000Z

110

Higgins coal gasification/repowering study: feasibility study for alternate fuels. [Higgins power plant, Pinellar County, Florida  

Science Conference Proceedings (OSTI)

In 1978, FPC determined that repowering the existing 138 MW Higgins power plant would provide the most economical means for meeting immediate additional power requirements. The use of an integrated coal gasification combined cycle power plant offered the opportunity to revive the Higgins repowering concept without potential Fuel Use Act restrictions. The existing Higgins power plant is located at the north end of Tampa Bay on Booth Point, near the City of Oldsmar in Pinellas County, Florida. The basis for this feasibility study is to prepare a preliminary facility design for repowering the existing Higgins plant steam turbine generators utilizing coal gasification combined cycle (CGCC) technology to produce an additional 300 MW of power. The repowering is to be accomplished by integrating British Gas/Lurgi slagging gasifiers with combined cycle equipment consisting of new combustion turbines and heat recovery steam generators (HRSGs), and the existing steam turbines. The proposed CGCC facility has been designed for daily cyclic duty. However, since it was anticipated that the heat rate would be lower than at other existing FPC units, the CGCC facility has also been designed with base load operation capabilities.

Not Available

1981-12-01T23:59:59.000Z

111

Combustion Engineering Integrated Coal Gasification Combined Cycle Repowering Project, Clean Coal Technology Program  

Science Conference Proceedings (OSTI)

The DOE entered into a cooperative agreement with Combustion Engineering, Inc. (C-E) under which DOE proposes to provide cost-shared funding to design, construct, and operate an Integrated Coal Gasification Combined Cycle (IGCC) project to repower an existing steam turbine generator set at the Springfield (Illinois) City Water, Light and Power (CWL P) Lakeside Generating Station, while capturing 90% of the coal's sulfur and producing elemental sulfur as a salable by-product. The proposed demonstration would help determine the technical and economic feasibility of the proposed IGCC technology on a scale that would allow the utility industry to assess its applicability for repowering other coal-burning power plants. This Environmental Assessment (EA) has been prepared by DOE in compliance with the requirements of National Environmental Policy Act (NEPA). The sources of information for this EA include the following: C-E's technical proposal for the project submitted to DOE in response to the Innovative Clean Coal Technology (ICCT) Program Opportunity Notice (PON); discussions with C-E and CWL P staff; the volume of environmental information for the project and its supplements provided by C-E; and a site visit to the proposed project site.

Not Available

1992-03-01T23:59:59.000Z

112

Combustion Engineering Integrated Coal Gasification Combined Cycle Repowering Project, Clean Coal Technology Program. Environmental Assessment  

Science Conference Proceedings (OSTI)

The DOE entered into a cooperative agreement with Combustion Engineering, Inc. (C-E) under which DOE proposes to provide cost-shared funding to design, construct, and operate an Integrated Coal Gasification Combined Cycle (IGCC) project to repower an existing steam turbine generator set at the Springfield (Illinois) City Water, Light and Power (CWL&P) Lakeside Generating Station, while capturing 90% of the coal`s sulfur and producing elemental sulfur as a salable by-product. The proposed demonstration would help determine the technical and economic feasibility of the proposed IGCC technology on a scale that would allow the utility industry to assess its applicability for repowering other coal-burning power plants. This Environmental Assessment (EA) has been prepared by DOE in compliance with the requirements of National Environmental Policy Act (NEPA). The sources of information for this EA include the following: C-E`s technical proposal for the project submitted to DOE in response to the Innovative Clean Coal Technology (ICCT) Program Opportunity Notice (PON); discussions with C-E and CWL&P staff; the volume of environmental information for the project and its supplements provided by C-E; and a site visit to the proposed project site.

Not Available

1992-03-01T23:59:59.000Z

113

CE IGCC Repowering Project: Use of the Lockheed Kinetic Extruder for coal feeding; Topical report, June 1993  

SciTech Connect

ABB CE is evaluating alternate methods of coal feed across a pressure barrier for its pressurized coal gasification process. The Lockheed Kinetic Extruder has shown to be one of the most promising such developments. In essence, the Kinetic Extruder consists of a rotor in a pressure vessel. Coal enters the rotor and is forced outward to the surrounding pressure vessel by centrifugal force. The force on the coal passing across the rotor serves as a pressure barrier. Should this technology be successfully developed and tested, it could reduce the cost of IGCC technology by replacing the large lockhoppers conventionally used with a much smaller system. This will significantly decrease the size of the gasifier island. Kinetic Extruder technology needs testing over an extended period of time to develop and prove the long term reliability and performance needed in a commercial application. Major issues to be investigated in this program are component design for high temperatures, turn-down, scale-up factors, and cost. Such a test would only be economically feasible if it could be conducted on an existing plant. This would defray the cost of power and feedstock. Such an installation was planned for the CE IGCC Repowering Project in Springfield, Illinois. Due to budgetary constraints, however, this provision was dropped from the present plant design. It is believed that, with minor design changes, a small scale test version of the Kinetic Extruder could be installed parallel to an existing lockhopper system without prior space allocation. Kinetic Extruder technology represents significant potential cost savings to the IGCC process. For this reason, a test program similar to that specified for the Springfield project would be a worthwhile endeavor.

NONE

1994-02-01T23:59:59.000Z

114

DOE/NETL-2002/1164 Wabash River Coal Gasification Repowering Project: A DOE Assessment  

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

4 4 Wabash River Coal Gasification Repowering Project: A DOE Assessment January 2002 U.S. Department of Energy National Energy Technology Laboratory P.O. Box 880, 3610 Collins Ferry Road Morgantown, WV 26507-0880 and P.O. Box 10940, 626 Cochrans Mill Road Pittsburgh, PA 15236-0940 website: www.netl.doe.gov 2 Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor 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

115

Motif discovery in sequential data  

E-Print Network (OSTI)

In this thesis, I discuss the application and development of methods for the automated discovery of motifs in sequential data. These data include DNA sequences, protein sequences, and real-valued sequential data such as ...

Jensen, Kyle L. (Kyle Lawrence)

2006-01-01T23:59:59.000Z

116

Sequential cloning of chromosomes  

DOE Patents (OSTI)

A method for sequential cloning of chromosomal DNA and chromosomal DNA cloned by this method are disclosed. The method includes the selection of a target organism having a segment of chromosomal DNA to be sequentially cloned. A first DNA segment, having a first restriction enzyme site on either side. homologous to the chromosomal DNA to be sequentially cloned is isolated. A first vector product is formed by ligating the homologous segment into a suitably designed vector. The first vector product is circularly integrated into the target organism`s chromosomal DNA. The resulting integrated chromosomal DNA segment includes the homologous DNA segment at either end of the integrated vector segment. The integrated chromosomal DNA is cleaved with a second restriction enzyme and ligated to form a vector-containing plasmid, which is replicated in a host organism. The replicated plasmid is then cleaved with the first restriction enzyme. Next, a DNA segment containing the vector and a segment of DNA homologous to a distal portion of the previously isolated DNA segment is isolated. This segment is then ligated to form a plasmid which is replicated within a suitable host. This plasmid is then circularly integrated into the target chromosomal DNA. The chromosomal DNA containing the circularly integrated vector is treated with a third, retrorestriction enzyme. The cleaved DNA is ligated to give a plasmid that is used to transform a host permissive for replication of its vector. The sequential cloning process continues by repeated cycles of circular integration and excision. The excision is carried out alternately with the second and third enzymes.

Lacks, S.A.

1991-12-31T23:59:59.000Z

117

Sequential cloning of chromosomes  

DOE Patents (OSTI)

A method for sequential cloning of chromosomal DNA of a target organism is disclosed. A first DNA segment homologous to the chromosomal DNA to be sequentially cloned is isolated. The first segment has a first restriction enzyme site on either side. A first vector product is formed by ligating the homologous segment into a suitably designed vector. The first vector product is circularly integrated into the target organism's chromosomal DNA. The resulting integrated chromosomal DNA segment includes the homologous DNA segment at either end of the integrated vector segment. The integrated chromosomal DNA is cleaved with a second restriction enzyme and ligated to form a vector-containing plasmid, which is replicated in a host organism. The replicated plasmid is then cleaved with the first restriction enzyme. Next, a DNA segment containing the vector and a segment of DNA homologous to a distal portion of the previously isolated DNA segment is isolated. This segment is then ligated to form a plasmid which is replicated within a suitable host. This plasmid is then circularly integrated into the target chromosomal DNA. The chromosomal DNA containing the circularly integrated vector is treated with a third, retrorestriction (class IIS) enzyme. The cleaved DNA is ligated to give a plasmid that is used to transform a host permissive for replication of its vector. The sequential cloning process continues by repeated cycles of circular integration and excision. The excision is carried out alternately with the second and third enzymes.

Lacks, Sanford A. (Brookhaven, NY)

1995-07-18T23:59:59.000Z

118

Sequential cloning of chromosomes  

DOE Patents (OSTI)

A method for sequential cloning of chromosomal DNA of a target organism is disclosed. A first DNA segment homologous to the chromosomal DNA to be sequentially cloned is isolated. The first segment has a first restriction enzyme site on either side. A first vector product is formed by ligating the homologous segment into a suitably designed vector. The first vector product is circularly integrated into the target organism`s chromosomal DNA. The resulting integrated chromosomal DNA segment includes the homologous DNA segment at either end of the integrated vector segment. The integrated chromosomal DNA is cleaved with a second restriction enzyme and ligated to form a vector-containing plasmid, which is replicated in a host organism. The replicated plasmid is then cleaved with the first restriction enzyme. Next, a DNA segment containing the vector and a segment of DNA homologous to a distal portion of the previously isolated DNA segment is isolated. This segment is then ligated to form a plasmid which is replicated within a suitable host. This plasmid is then circularly integrated into the target chromosomal DNA. The chromosomal DNA containing the circularly integrated vector is treated with a third, retrorestriction (class IIS) enzyme. The cleaved DNA is ligated to give a plasmid that is used to transform a host permissive for replication of its vector. The sequential cloning process continues by repeated cycles of circular integration and excision. The excision is carried out alternately with the second and third enzymes. 9 figs.

Lacks, S.A.

1995-07-18T23:59:59.000Z

119

A Globally Convergent Sequential Linear Programming Algorithm ...  

E-Print Network (OSTI)

approach, and a piecewise sequential quadratic programming approach (PSQP). Fukushima, Luo and Pang [20] proposed a sequential quadratic programming,...

120

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Ft. Hood Military Base Outside Killeen, Texas. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative through the Region 6 contract, selected Ft. Hood Army Base in Killeen, Texas, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this study is to assess the site for possible photovoltaic (PV) system installations and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Geiger, J.; Lisell, L.; Mosey, G.

2013-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Snohomish County Cathcart Landfill Site in Snohomish County, Washington. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Snohomish County Cathcart Landfill Site in Snohomish County, Washington, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Olis, D.; Salasovich, J.; Mosey, G.; Healey, V.

2013-04-01T23:59:59.000Z

122

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Former Bethlehem Steel Plant Brownfield Site in Lackawanna, New York. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Bethlehem Steel Plant site in Lackawanna, New York, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Salasovich, J.; Geiger, J.; Mosey, G.; Healey, V.

2013-04-01T23:59:59.000Z

123

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Price Landfill Site in Pleasantville, New Jersey. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Price Landfill site in Pleasantville, New Jersey, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site. This study did not assess environmental conditions at the site.

Salasovich, J.; Geiger, J.; Mosey, G.; Healey, V.

2013-05-01T23:59:59.000Z

124

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Brisbane Baylands Brownfield Site in Brisbane, California. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Brisbane Baylands site in Brisbane, California, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Salasovich, J.; Geiger, J.; Healey, V.; Mosey, G.

2013-04-01T23:59:59.000Z

125

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Standard Chlorine of Delaware Superfund Site in Delaware City, Delaware. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Standard Chlorine of Delaware site in Delaware City, Delaware, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Salasovich, J.; Geiger, J.; Mosey, G.; Healey, V.

2013-06-01T23:59:59.000Z

126

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Peru Mill Industrial Park in the City of Deming, New Mexico. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Peru Mill Industrial Park site in the City of Deming, New Mexico, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Kiatreungwattana, K.; Geiger, J.; Healey, V.; Mosey, G.

2013-04-01T23:59:59.000Z

127

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Kolthoff Landfill in Cleveland, Ohio. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), Region 5, in accordance with the RE-Powering America's Land initiative, selected the Kolthoff Landfill site in Cleveland, Ohio, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Salasovich, J.; Geiger, J.; Mosey, G.; Healey, V.

2013-06-01T23:59:59.000Z

128

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Chino Mine in Silver City, New Mexico. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Chino Mine site in Silver City, New Mexico, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Kiatreungwattana, K.; Geiger, J.; Healey, V.; Mosey, G.

2013-04-01T23:59:59.000Z

129

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Former Fort Ord Army Base Site in Marina, California. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Fort Ord Army Base (FOAB) site in Marina, California, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Stoltenberg, B.; Konz, C.; Mosey, G.

2013-05-01T23:59:59.000Z

130

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Crazy Horse Landfill Site in Salinas, California. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Crazy Horse Landfill site in Salinas, California, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) was contacted to provide technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, operation and maintenance requirements, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Stoltenberg, B.; Konz, C.; Mosey, G.

2013-03-01T23:59:59.000Z

131

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Sky Park Landfill Site in Eau Claire, Wisconsin. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Sky Park Landfill site in Eau Claire, Wisconsin, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Simon, J.; Mosey, G.

2013-01-01T23:59:59.000Z

132

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Kerr McGee Site in Columbus, Mississippi. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Kerr McGee site in Columbus, Mississippi, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Simon, J.; Mosey, G.

2013-01-01T23:59:59.000Z

133

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Former Chicago, Milwaukee, and St. Paul Rail Yard Company Site in Perry, Iowa. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Former Chicago, Milwaukee & St. Paul Rail Yard Company site in Perry, Iowa, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site. This study did not assess environmental conditions at the site.

Salasovich, J.; Geiger, J.; Healey, V.; Mosey, G.

2013-03-01T23:59:59.000Z

134

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Tronox Facility in Savannah, Georgia. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Tronox Facility site in Savannah, Georgia, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Kiatreungwattana, K.; Geiger, J.; Healey, V.; Mosey, G.

2013-03-01T23:59:59.000Z

135

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Tower Road Site in Aurora, Colorado. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Tower Road site in Aurora, Colorado, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site. This study did not assess environmental conditions at the site.

Van Geet, O.; Mosey, G.

2013-03-01T23:59:59.000Z

136

Feasibility Study of Economics and Performance of Solar Photovoltaics at the VAG Mine Site in Eden and Lowell, Vermont. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Vermont Asbestos Group (VAG) Mine site in Eden, Vermont, and Lowell, Vermont, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site.

Simon, J.; Mosey, G.

2013-04-01T23:59:59.000Z

137

Feasibility study for combustion-turbine repowering of North Bangkok Units 1, 2, and 3. Volume 2. Appendices. Export trade information  

SciTech Connect

The volume is the second of a two part final report submitted to the Thai Electricity Generating Authority (EGAT). The report documents a study that examined the feasibility of partially repowering North Bangkok Units 1, 2, and 3 with residual oil-fired combustion turbines. The volume of the report includes the eight appendices that accompany the text. These appendices include the performance calculations for the following equipment: the boiler, the steam turbine, and the combustion turbine. Capital expenditures and return figures are included in the economics appendix. Fuel treatment literature and background information on combustion turbine repowering are provided in two separate appendices. An assessment of the repowering heat rate improvements is provided in Appendix E.

1991-09-01T23:59:59.000Z

138

Site Considerations for Repowering With Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) from the L.V. Sutton Station Concept Assessment  

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

Tonnemacher et al., Site Considerations for Repowering With APFBC from the L.V. Sutton Station Concept Assessment Tonnemacher et al., Site Considerations for Repowering With APFBC from the L.V. Sutton Station Concept Assessment paper 970562 Page 1 of 36 Site Considerations for Repowering with Advanced Circulating Pressurized Fluidized Bed Combustion (APFBC) from the L.V. Sutton Station Concept Assessment Gary C. Tonnemacher, P.E., and David C. Killen, P.E. Carolina Power & Light Company Raleigh, North Carolina Richard E. Weinstein, P.E., Harvey N. Goldstein, P.E., and Jay S. White Parsons Power Group Inc. Reading, Pennsylvania Robert W. Travers, P.E. U.S. Department of Energy Office of Fossil Energy / Germantown, Maryland electronic mail addresses/phone no. electronic mail addresses/phone no. Tonnemacher{ Gary.Tonnemacher@CPLC.COM 919 / 546-6091 Goldstein { Harvey_N_Goldstein@Parsons.COM

139

Sequential detection of web defects  

DOE Patents (OSTI)

A system for detecting defects on a moving web having a sequential series of identical frames uses an imaging device to form a real-time camera image of a frame and a comparitor to comparing elements of the camera image with corresponding elements of an image of an exemplar frame. The comparitor provides an acceptable indication if the pair of elements are determined to be statistically identical; and a defective indication if the pair of elements are determined to be statistically not identical. If the pair of elements is neither acceptable nor defective, the comparitor recursively compares the element of said exemplar frame with corresponding elements of other frames on said web until one of the acceptable or defective indications occur.

Eichel, Paul H. (Albuquerque, NM); Sleefe, Gerard E. (Cedar Crest, NM); Stalker, K. Terry (Albuquerque, NM); Yee, Amy A. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

140

Combustion Engineering Integrated Coal Gasification Combined Cycle Repowering Project: Clean Coal Technology Program  

SciTech Connect

On February 22, 1988, DOE issued Program Opportunity Notice (PON) Number-DE-PS01-88FE61530 for Round II of the CCT Program. The purpose of the PON was to solicit proposals to conduct cost-shared ICCT projects to demonstrate technologies that are capable of being commercialized in the 1990s, that are more cost-effective than current technologies, and that are capable of achieving significant reduction of SO[sub 2] and/or NO[sub x] emissions from existing coal burning facilities, particularly those that contribute to transboundary and interstate pollution. The Combustion Engineering (C-E) Integrated Coal Gasification Combined Cycle (IGCC) Repowering Project was one of 16 proposals selected by DOE for negotiation of cost-shared federal funding support from among the 55 proposals that were received in response to the PON. The ICCT Program has developed a three-level strategy for complying with the National Environmental Policy Act (NEPA) that is consistent with the President's Council on Environmental Quality regulations implementing NEPA (40 CFR 1500-1508) and the DOE guidelines for compliance with NEPA (10 CFR 1021). The strategy includes the consideration of programmatic and project-specific environmental impacts during and subsequent to the reject selection process.

1992-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Wabash River Coal Gasification Combined Cycle Repowering Project: Clean Coal Technology Program. Environmental Assessment  

Science Conference Proceedings (OSTI)

The proposed project would result in a combined-cycle power plant with lower emissions and higher efficiency than most existing coal-fired power plants of comparable size. The net plant heat rate (energy content of the fuel input per useable electrical generation output; i.e., Btu/kilowatt hour) for the new repowered unit would be a 21% improvement over the existing unit, while reducing SO{sub 2} emissions by greater than 90% and limiting NO{sub x} emissions by greater than 85% over that produced by conventional coal-fired boilers. The technology, which relies on gasified coal, is capable of producing as much as 25% more electricity from a given amount of coal than today`s conventional coal-burning methods. Besides having the positive environmental benefit of producing less pollutants per unit of power generated, the higher overall efficiency of the proposed CGCC project encourages greater utilization to meet base load requirements in order to realize the associated economic benefits. This greater utilization (i.e., increased capacity factor) of a cleaner operating plant has global environmental benefits in that it is likely that such power would replace power currently being produced by less efficient plants emitting a greater volume of pollutants per unit of power generated.

Not Available

1993-05-01T23:59:59.000Z

142

Feasibility Study of Economics and Performance of Geothermal Power Generation at the Lakeview Uranium Mill Site in Lakeview, Oregon. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Lakeview Uranium Mill site in Lakeview, Oregon, for a feasibility study of renewable energy production. The EPA contracted with the National Renewable Energy Laboratory (NREL) to provide technical assistance for the project. The purpose of this report is to describe an assessment of the site for possible development of a geothermal power generation facility and to estimate the cost, performance, and site impacts for the facility. In addition, the report recommends development pathways that could assist in the implementation of a geothermal power system at the site.

Hillesheim, M.; Mosey, G.

2013-11-01T23:59:59.000Z

143

Feasibility study of repowering the USCGC vindicator (WMEC-3) with modular diesel fueled direct fuel cells. Final report  

SciTech Connect

In 1988, AEL was awarded a Small Business Innovation Research (SBIR) Phase I contract on Navy Topic N88-94 by the NAVSEA RD Officer, Code 03R. In 1990, this topic moved to Phase II with a contract involving the lab demonstration of the use of diesel type fuel in high temperature molten carbonate or Direct Fuel Cells (DFCs). The Phase II work was successfully completed in 1992. In 1995, Navy Code 03R agreed to transfer Topic N88-94 to the USCG RD Office, G-SIR. The Phase III Feasibility Study was awarded to AEL in 1996 to perform the work described in this report. The USCGC VINDICATOR (WMEC-3) has been evaluated as the candidate ship for fuel cell repowering at 2.58 MW. It is a former T-AGOS ship with diesel-electric propulsion and ship`s service. The four 600 kW diesel generators (2.4 MW) would be replaced with twelve 215 kW DFC one-sided-fit fuel cell modules embodying a `no-maintenance` rapid changeout approach. The repowered ship would be faster, consume half of the fuel for the equivalent range, be super-quiet, be air pollution-free, cut the crew complement and produce potable water onboard as a byproduct. The study evaluated technical aspects of fuel cells, naval architectural removals and additions, maintenance, risk and cost-effectiveness issues. The use of electric utility type DFCs, with the cost reduction and mass production advantages of this on-land marketplace will make possible early introduction of marine-derivative fuel cell power plants for ship applications. It is concluded that repowering ships with fuel cells is feasible and that the next step is a Preliminary Design.

Kumm, W.H.; Lisie, H.L.

1997-05-01T23:59:59.000Z

144

Adaptive sequential controller  

Science Conference Proceedings (OSTI)

An adaptive sequential controller for controlling a circuit breaker or other switching device to substantially eliminate transients on a distribution line caused by closing and opening the circuit breaker. The device adaptively compensates for changes in the response time of the circuit breaker due to aging and environmental effects. A potential transformer provides a reference signal corresponding to the zero crossing of the voltage waveform, and a phase shift comparator circuit compares the reference signal to the time at which any transient was produced when the circuit breaker closed, producing a signal indicative of the adaptive adjustment that should be made. Similarly, in controlling the opening of the circuit breaker, a current transformer provides a reference signal that is compared against the time at which any transient is detected when the circuit breaker last opened. An adaptive adjustment circuit produces a compensation time that is appropriately modified to account for changes in the circuit breaker response, including the effect of ambient conditions and aging. When next opened or closed, the circuit breaker is activated at an appropriately compensated time, so that it closes when the voltage crosses zero and opens when the current crosses zero, minimizing any transients on the distribution line. Phase angle can be used to control the opening of the circuit breaker relative to the reference signal provided by the potential transformer. 15 figs.

El-Sharkawi, M.A.; Xing, J.; Butler, N.G.; Rodriguez, A.

1994-11-01T23:59:59.000Z

145

Adaptive sequential controller  

DOE Patents (OSTI)

An adaptive sequential controller (50/50') for controlling a circuit breaker (52) or other switching device to substantially eliminate transients on a distribution line caused by closing and opening the circuit breaker. The device adaptively compensates for changes in the response time of the circuit breaker due to aging and environmental effects. A potential transformer (70) provides a reference signal corresponding to the zero crossing of the voltage waveform, and a phase shift comparator circuit (96) compares the reference signal to the time at which any transient was produced when the circuit breaker closed, producing a signal indicative of the adaptive adjustment that should be made. Similarly, in controlling the opening of the circuit breaker, a current transformer (88) provides a reference signal that is compared against the time at which any transient is detected when the circuit breaker last opened. An adaptive adjustment circuit (102) produces a compensation time that is appropriately modified to account for changes in the circuit breaker response, including the effect of ambient conditions and aging. When next opened or closed, the circuit breaker is activated at an appropriately compensated time, so that it closes when the voltage crosses zero and opens when the current crosses zero, minimizing any transients on the distribution line. Phase angle can be used to control the opening of the circuit breaker relative to the reference signal provided by the potential transformer.

El-Sharkawi, Mohamed A. (Renton, WA); Xing, Jian (Seattle, WA); Butler, Nicholas G. (Newberg, OR); Rodriguez, Alonso (Pasadena, CA)

1994-01-01T23:59:59.000Z

146

Power-generation alternatives. The Hellenic power system. Volume 1. Executive Summary. Export trade information  

Science Conference Proceedings (OSTI)

The Phase I study was performed to assist the Public Power Corporation (PPC) of Greece in making decisions regarding the need for new power generation or for repowering existing facilities. An analysis of both new power generation requirements and the feasibility of repowering the existing Aliveri and St. George Stations with coal is provided. The study concludes: Repowering of Aliveri Units 3 and 4 with coal should commence now. Present and committed capacity of the PPC system is adequate until 1997 to 1999, at which time a new 600 MW pulverized coal boiler unit at the Aliveri Station would be commissioned. St. George Station has very little possibility for siting of coal-based new generation or repowering. New facilities should be designed for imported coal to conserve lignite resources for existing and committed units. An alternative to PPC ownership is private sector ownership. A Phase II study for repowering should be initiated and funded by PPC following acceptance of the Phase I study.

Not Available

1987-06-01T23:59:59.000Z

147

Informative Views and Sequential Recognition  

E-Print Network (OSTI)

Informative Views and Sequential Recognition Tal Arbel and Frank P. Ferrie TR-CIM-95-10 Nov. 1995 3 Telephone: 514 398-6319 Telex: 05 268510 FAX: 514 398-7348 Email: cim@cim.mcgill.ca #12;Informative Views

Dudek, Gregory

148

On the Sequential Determination of Model Misfit  

E-Print Network (OSTI)

On the Sequential Determination of Model Misfit Peter Whaite and Frank P. Ferrie TR-CIM-94-6319 Telex: 05 268510 FAX: 514 398-7348 Email: cim@cim.mcgill.ca #12;On the Sequential Determination of Model

Dudek, Gregory

149

On the Sequential Determination of Model Misfit  

E-Print Network (OSTI)

On the Sequential Determination of Model Misfit Peter Whaite and Frank P. Ferrie TR­CIM­94) 398­6319 Telex: 05 268510 FAX: (514) 398­7348 Email: cim@cim.mcgill.ca #12; On the Sequential

Dudek, Gregory

150

Sequential Circuit Testing: From DFT to SFT  

Science Conference Proceedings (OSTI)

Sequential circuit testing is an active research area due to its applicability, its practicality, and its complexity. This paper gives an overview of the sequential automatic test pattern generation approaches and the classical and more recent design-for-testability ... Keywords: logic testing, sequential circuit testing, DFT techniques, automatic test pattern generation, design-for-testability methods, synthesis-for-testability, SFT techniques, large sequential circuits, ATPG

R. M. Chou; K. K. Saluja

1997-01-01T23:59:59.000Z

151

Using CSP to verify sequential consistency  

Science Conference Proceedings (OSTI)

This paper shows how the theory of Communicating Sequential Processes (CSP) can be used to establish that a protocol guarantees sequential consistency. The protocol in question is an accepted design based upon lazy caching; it is an ideal example for ... Keywords: CSP, lazy caching protocol, sequential consistency, specification, verification

Gavin Lowe; Jim Davies

1999-06-01T23:59:59.000Z

152

Sequential Monte Carlo for Bayesian sequentially designed experiments for discrete data  

Science Conference Proceedings (OSTI)

In this paper we present a sequential Monte Carlo algorithm for Bayesian sequential experimental design applied to generalised non-linear models for discrete data. The approach is computationally convenient in that the information of newly observed data ... Keywords: Clinical trials, Generalised linear model, Generalised non-linear model, Sequential Monte Carlo, Sequential design, Target stimulus

Christopher C. Drovandi; James M. Mcgree; Anthony N. Pettitt

2013-01-01T23:59:59.000Z

153

Online annotation of faces in personal videos by sequential learning  

Science Conference Proceedings (OSTI)

This paper addresses semi-automatic annotation of faces in personal videos. Different from previous offline annotation systems, this paper studies online annotation of faces. During an annotation session, few annotations are requested from the user only ... Keywords: Automatic annotation of faces, Personal video annotation, Sequential learning

M. C. Yilmazturk; I. Ulusoy; N. K. Cicekli

2013-04-01T23:59:59.000Z

154

Generic sequential sampling for metamodel approximations  

SciTech Connect

Metamodels approximate complex multivariate data sets from simulations and experiments. These data sets often are not based on an explicitly defined function. The resulting metamodel represents a complex system's behavior for subsequent analysis or optimization. Often an exhaustive data search to obtain the data for the metalnodel is impossible, so an intelligent sampling strategy is necessary. While inultiple approaches have been advocated, the majority of these approaches were developed in support of a particular class of metamodel, known as a Kriging. A more generic, cotninonsense approach to this problem allows sequential sampling techniques to be applied to other types of metamodeis. This research compares recent search techniques for Kriging inetamodels with a generic, inulti-criteria approach combined with a new type of B-spline metamodel. This B-spline metamodel is competitive with prior results obtained with a Kriging metamodel. Furthermore, the results of this research highlight several important features necessary for these techniques to be extended to more complex domains.

Turner, C. J. (Cameron J.); Campbell, M. I. (Matthew I.)

2003-01-01T23:59:59.000Z

155

Zagreb east TE-TO feasibility study for repowering of thermal power and heating plant for Hrvatska Elektroprivreda: Final report. Export trade information  

Science Conference Proceedings (OSTI)

The report assesses the feasibility of repowering or building new generating facilities at the TE-TO plant in Zagreb which generates more than half of the Zagreb area`s power and 13% of all power generated in Croatia. The contents include the following: (1) executive summary; (2) design basis; (3) screening evaluations; (4) preliminary design of preferred options; (5) detailed cost estimates and economic analysis; (6) conceptual design; (7) financial analysis; (8) environmental evaluation; (9) risk assessment; (10) conclusions. also included are tables 1 through 9, figures a through j, and exhibits 1 through 8.

NONE

1997-04-01T23:59:59.000Z

156

Sequential power-up circuit  

DOE Patents (OSTI)

A sequential power-up circuit for starting several electrical load elements in series to avoid excessive current surge, comprising a voltage ramp generator and a set of voltage comparators, each comparator having a different reference voltage and interfacing with a switch that is capable of turning on one of the load elements. As the voltage rises, it passes the reference voltages one at a time and causes the switch corresponding to that voltage to turn on its load element. The ramp is turned on and off by a single switch or by a logic-level electrical signal. The ramp rate for turning on the load element is relatively slow and the rate for turning the elements off is relatively fast. Optionally, the duration of each interval of time between the turning on of the load elements is programmable. 2 figs.

Kronberg, J.W.

1992-06-02T23:59:59.000Z

157

Sequential power-up circuit  

DOE Patents (OSTI)

A sequential power-up circuit for starting several electrical load elements in series to avoid excessive current surge, comprising a voltage ramp generator and a set of voltage comparators, each comparator having a different reference voltage and interfacing with a switch that is capable of turning on one of the load elements. As the voltage rises, it passes the reference voltages one at a time and causes the switch corresponding to that voltage to turn on its load element. The ramp is turned on and off by a single switch or by a logic-level electrical signal. The ramp rate for turning on the load element is relatively slow and the rate for turning the elements off is relatively fast. Optionally, the duration of each interval of time between the turning on of the load elements is programmable.

Kronberg, James W. (108 Independent Blvd., Aiken, SC 29801)

1992-01-01T23:59:59.000Z

158

Economic Development Through Biomass Systems Integration  

Science Conference Proceedings (OSTI)

Current research has shown the economic feasibility of integrated biomass systems using willow as an energy crop feedstock along with available wood wastes. Utility members in the Empire State Biopower Consortium anticipate conversion of four pulverized-coal plants for co-firing at 10% by heat content. Co-firing would be a prelude to repowering with a high-efficiency biopower system by 2012.

1995-10-07T23:59:59.000Z

159

Comprehensive report to Congress: Clean Coal Technology Program: Arvah B. Hopkins circulating fluidized-bed repowering project: A project proposed by: The City of Tallahassee  

Science Conference Proceedings (OSTI)

The project involves the repowering of a 250-megawatt electrical (MWe) natural gas- or oil-fired boiler with a coal-fired atmospheric circulating fluidized-bed (CFB) boiler to provide steam to an existing turbine generator. The boiler will be the largest of its type. After construction and shakedown, the City of Tallahassee (CoT) plant will be operated for 24 months with at least three different eastern coals. Final coal selection will be based on the Fuels Selection Study, which is part of Phase I-A of the project. Cost, financial, and technical data from the CoT CFB will be provided the utility industry for evaluation of a 250-MWe CFB as a commercially viable clean coal alternative. The objective of the Arvah B. Hopkins CFB Repowering Project is to demonstrate an efficient, economical, and environmentally superior method of generating electric power from coal. The work to be performed under the Cooperative Agreement includes the design, construction, and operation of the demonstration plant. 4 figs.

Not Available

1990-10-01T23:59:59.000Z

160

Machine Learning for Sequential Data: A Review  

Science Conference Proceedings (OSTI)

Statistical learning problems in many fields involve sequential data. This paper formalizes the principal learning tasks and describes the methods that have been developed within the machine learning research community for addressing these problems. ...

Thomas G. Dietterich

2002-08-01T23:59:59.000Z

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


161

A comparison of sequential and simultaneous auctions  

Science Conference Proceedings (OSTI)

Sequential and simultaneous auctions are two important mechanisms for buying/selling multiple objects. These two mechanisms yield different outcomes (i.e., different revenues and also different profits to the winning bidders). Hence, both the auctioneer ...

Shaheen S. Fatima

2006-05-01T23:59:59.000Z

162

A view-sequential 3D display  

E-Print Network (OSTI)

This thesis outlines the various techniques for creating electronic 3D displays and analyzes their commercial potential. The thesis argues for the use of view-sequential techniques in the design of 3D displays based on ...

Cossairt, Oliver S. (Oliver Strider), 1978-

2003-01-01T23:59:59.000Z

163

CE IGCC repowering project preliminary hazard analysis. Topical report, November 1, 1990--May 31, 1993  

SciTech Connect

A preliminary hazard analysis was conducted on the CE IGCC unit by representatives from ABB Lummus Crest Process Systems, Lummus Technical Division, Combustion Engineering, and Lummus Initial Operations. As a basis for the review, available technical data and documentation was used. Two areas of the unit were reviewed, the coal yard delivery system and the gasifier island. The coal yard consists of the coal delivery and handling systems, both of these systems are conventional. The gasifier island encompasses the coal pulverizer and feed system, gasifier and syngas cooler, char removal system, char recycle system, and high temperature sulfur removal system. With first of a kind equipment incorporated in the gasifier island, most of the concerns of potential hazards were centered here. At the time of the review, there were no process flow diagrams for the rest of the combined cycle. To prevent detaining the review of the gasifier island, the remaining areas were not reviewed at this time. However, the remaining areas will be reviewed before final unit design is completed. In reviewing the above mentioned systems, the PHA identified several hazards which will be the basis for a subsequent detailed Hazard and Operability (HAZOP) study which will be performed at a later stage of this project. Results from the evaluation were documented by the team and then reviewed by engineers in the IGCC Product Development department. From the concerns of risks developed by the review team, rethinking of proposed operation and design of the plant during the preliminary design stages took place. (In doing so, cost and redesign time during final design phase will be reduced).

Peletz, L.J.

1993-06-01T23:59:59.000Z

164

CE IGCC repowering project: Materials for coal gasification environment. Topical report, June 1993  

Science Conference Proceedings (OSTI)

A task to develop material requirements and a materials testing strategy was established with the Materials and Water Chemistry Department of the ABB Power plant Laboratories. This involved examining the requirements for each system under ABB CE scope. The basis for the material recommendations was largely based on in-house test programs under DOE contract and ABB CE experience. Consultants were utilized in a parallel task to assist in the design and material specification for the solids handling systems. ABB CE experience includes operating data from a former process development unit (PDU) located in Windsor, Connecticut. The unit gasified Pittsburgh seam coal at a nominal firing rate of 120 tons per day. The objectives of the program were to produce clean, low-Btu gas from coal, and to provide the design information for scale-up to commercial-size plants. The results of the task were used to specify and, depending on scope, design the equipment used in the plant. A detailed document was developed and used to generate a Metallurgical Flow Diagram. Specifications were developed from this diagram. For the equipment designed, these selections were provided to representatives of cognizant design and manufacturing departments. In addition, where appropriate, recommendations were made for operating procedures and for design changes. Specified materials will be again evaluated during detailed engineering. In some areas the results of the task were not conclusive. Additional investigation will be required. These areas are the types of approaches which can be taken to accommodate product gas sulfidation resistance and solids transport erosion.

Gibbons, T.B.; O`Neill, J.K.; Plumley, A.L.; Thibeault, P.R.; Waryasz, R.W.

1993-10-01T23:59:59.000Z

165

Hardware compilation of sequential ada  

Science Conference Proceedings (OSTI)

Normal implementations of real-time systems on conventional processors are becoming much more difficult to prove correct to their timing specification. This is due to the complexity of modern processors (e.g. the worst case execution time of a program ...

M. Ward; N. C. Audsley

2001-11-01T23:59:59.000Z

166

Sequential versus simultaneous auctions: a case study  

Science Conference Proceedings (OSTI)

Sequential and simultaneous auctions are two important mechanisms for buying and selling multiple objects. These two mechanisms yield different outcomes (i.e., different surpluses, different revenues, and also different profits to the winning bidders). ... Keywords: game-theory, multi-object auctions

Shaheen Fatima

2006-08-01T23:59:59.000Z

167

Optimal sequential transmission over broadcast channel with nested feedback  

E-Print Network (OSTI)

We consider the optimal design of sequential transmission over broadcast channel with nested feedback. Nested feedback means that the channel output of the outer channel is also available at the decoder of the inner channel. We model the communication system as a decentralized team with three decision makers---the encoder and the two decoders. Structure of encoding and decoding strategies that minimize a total distortion measure over a finite horizon are determined. The results are applicable for real-time communication as well as for the information theoretic setup.

Mahajan, Aditya

2010-01-01T23:59:59.000Z

168

NDSeq: runtime checking for nondeterministic sequential specifications of parallel correctness  

Science Conference Proceedings (OSTI)

We propose to specify the correctness of a program's parallelism using a sequential version of the program with controlled nondeterminism. Such a nondeterministic sequential specification allows (1) the correctness of parallel interference to ... Keywords: parallel correctness, serializability, specification

Jacob Burnim; Tayfun Elmas; George Necula; Koushik Sen

2011-06-01T23:59:59.000Z

169

Scalable Feature Mining for Sequential Data Mitsubishi Electric Research Lab.  

E-Print Network (OSTI)

Scalable Feature Mining for Sequential Data Neal Lesh Mitsubishi Electric Research Lab. 201, DNA sequences, web usage data, multi­player games, and plan execution traces. In sequential domains

Zaki, Mohammed Javeed

170

Decoding sequential vs non-sequential two-photon double ionizationof helium using nuclear recoil  

SciTech Connect

Above 54.4 eV, two-photon double ionization of helium isdominated by a sequential absorption process, producing characteristicbehavior in the single and triple differential cross sections. We showthat the signature of this process is visible in the nuclear recoil crosssection, integrated over all energy sharings of the ejected electrons,even below the threshold for the sequential process. Since nuclear recoilmomentum imaging does not require coincident photoelectron measurement,the predicted images present a viable target for future experiments withnew short-pulse VUV and soft X-ray sources.

Horner, Daniel A.; Rescigno, Thomas N.; McCurdy, C. William

2008-01-07T23:59:59.000Z

171

Feasibility Study of Anaerobic Digestion of Food Waste in St. Bernard, Louisiana. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA) developed the RE-Powering America's Land initiative to re-use contaminated sites for renewable energy generation when aligned with the community's vision for the site. The former Kaiser Aluminum Landfill in St. Bernard Parish, Louisiana, was selected for a feasibility study under the program. Preliminary work focused on selecting a biomass feedstock. Discussions with area experts, universities, and the project team identified food wastes as the feedstock and anaerobic digestion (AD) as the technology.

Moriarty, K.

2013-01-01T23:59:59.000Z

172

Feasibility Study of Biopower in East Helena, Montana. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA) developed the RE-Powering America's Land initiative to reuse contaminated sites for renewable energy generation when aligned with the community's vision for the site. The former American Smelting and Refining Company (Asarco) smelter in East Helena, Montana, was selected for a feasibility study under the initiative. Biomass was chosen as the renewable energy resource based on the wood products industry in the area. Biopower was selected as the technology based on Montana's renewable portfolio standard (RPS) requiring utilities to purchase renewable power.

Moriarty, K.

2013-02-01T23:59:59.000Z

173

SeQuential Pacific Biodiesel LLC | Open Energy Information  

Open Energy Info (EERE)

Pacific Biodiesel LLC Jump to: navigation, search Name SeQuential-Pacific Biodiesel LLC Place Oregon Sector Biofuels Product JV between SeQuential Biofuels, Pacific Biodiesel, and...

174

Sequential generation of matrix-product states in cavity QED  

Science Conference Proceedings (OSTI)

We study the sequential generation of entangled photonic and atomic multiqubit states in the realm of cavity QED. We extend the work of C. Schoen et al. [Phys. Rev. Lett. 95, 110503 (2005)], where it was shown that all states generated in a sequential manner can be classified efficiently in terms of matrix-product states. In particular, we consider two scenarios: photonic multiqubit states sequentially generated at the cavity output of a single-photon source and atomic multiqubit states generated by their sequential interaction with the same cavity mode.

Schoen, C. [Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BZ (United Kingdom); Hammerer, K. [Institute for Theoretical Physics, University of Innsbruck, 6020 Innsbruck (Austria); Wolf, M. M.; Cirac, J. I. [Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching (Germany); Solano, E. [Physics Department, ASC, and CeNS, Ludwig-Maximilians-Universitaet, Theresienstrasse 37, 80333 Munich (Germany); Seccion Fisica, Departamento de Ciencias, Pontificia Universidad Catolica del Peru, Apartado Postal 1761, Lima (Peru)

2007-03-15T23:59:59.000Z

175

On probabilistic models for uncertain sequential pattern mining  

Science Conference Proceedings (OSTI)

We study uncertainty models in sequential pattern mining. We consider situations where there is uncertainty either about a source or an event. We show that both these types of uncertainties could be modelled using probabilistic databases, and give possible-worlds ... Keywords: mining uncertain data, novel algorithms for mining, probabilistic databases, sequential pattern mining, theoretical foundations of data mining.

Muhammad Muzammal; Rajeev Raman

2010-11-01T23:59:59.000Z

176

Moral Hazard with Sequential Policy Making ?  

E-Print Network (OSTI)

We develop a moral hazard model of sequential policy making. Consistent with empirical observations, equilibrium behavior by the agent overemphasizes the late stages of the policy-making process. The reason is that the principal faces a kind of political time inconsistency problem because of the temptation to revise her retention rule in the middle of the policy-making process. If the principal knows the production technology for policy outcomes, then she can solve this time inconsistency problem (and the distortions it induces) by committing to task-specific budget caps. However, if the principal is uncertain about the production technology, such task-specific budget caps introduce ex post inefficiency. If the uncertainty is large enough, the principal may prefer an institutional environment where agent actions are non-transparent and the budget is fungible. Such an environment allows the principal to exploit the agents expertise about the production technology, but at the cost of weaker overall incentives. Hence, the model highlights a novel mechanism for why transparency may not always be optimal in political environments.

unknown authors

2013-01-01T23:59:59.000Z

177

Development of a high-performance coal-fired power generating system with pyrolysis gas and char-fired high-temperature furnace (HITAF): Volume 4. Final report  

Science Conference Proceedings (OSTI)

An outgrowth of our studies of the FWDC coal-fired high performance power systems (HIPPS) concept was the development of a concept for the repowering of existing boilers. The initial analysis of this concept indicates that it will be both technically and economically viable. A unique feature of our greenfields HIPPS concept is that it integrates the operation of a pressurized pyrolyzer and a pulverized fuel-fired boiler/air heater. Once this type of operation is achieved, there are a few different applications of this core technology. Two greenfields plant options are the base case plant and a plant where ceramic air heaters are used to extend the limit of air heating in the HITAF. The greenfields designs can be used for repowering in the conventional sense which involves replacing almost everything in the plant except the steam turbine and accessories. Another option is to keep the existing boiler and add a pyrolyzer and gas turbine to the plant. The study was done on an Eastern utility plant. The owner is currently considering replacing two units with atmospheric fluidized bed boilers, but is interested in a comparison with HIPPS technology. After repowering, the emissions levels need to be 0.25 lb SO{sub x}/MMBtu and 0.15 lb NO{sub x}/MMBtu.

NONE

1996-05-01T23:59:59.000Z

178

Refactoring Sequential Java Code for Concurrency via Concurrent Libraries  

E-Print Network (OSTI)

Parallelizing existing sequential programs to run efficiently on multicores is hard. The Java 5 packagejava.util.concurrent (j.u.c.) supports writing concurrent programs: much of the complexity of writing threads-safe and ...

Ernst, Michael D.

2008-09-30T23:59:59.000Z

179

C. A. La Electricidad de Caracas: Feasibility-study definitional report. Arreciffs Units 1 through 5 repowering project, electric power generation expansion Venezuela thermal power plant. Export trade information  

SciTech Connect

C.A. La Electricidad de Caracas (E.de C.) is a private company which in 1991 served some 830,000 customers in an area of 4,160 square kilometers surrounding Caracas. A program is underway by E.de C. for upgrading equipment and expanding the capacity of several of its existing generating facilities. The Arrecifes repowering project will involve the addition of about 330 MW of new natural gas fired gas turbine generators and heat recovery steam generators (HRSGs) to five existing thermal power units built 30 to 40 years ago which have steam turbine generator sets of 26 to 41 MW each. The existing steam boilers will be removed. The limited but seemingly sufficient space available is to be a primary focus of the feasibility study.

Not Available

1991-05-01T23:59:59.000Z

180

Autonomous Units to Model Interacting Sequential and Parallel Processes  

E-Print Network (OSTI)

In this paper, we introduce the notion of a community of autonomous units as a rulebased and graph-transformational device to model processes that run interactively but independently of each other in a common environment. The main components of an autonomous unit are a set of rules, a control condition, and a goal. Every autonomous unit transforms graphs by applying its rules so that the control condition is satisfied. If the goal is reached the resulting transformation process is successful. A community contains a set of autonomous units, an initial environment specification, and an overall goal. In every transformation process of a community the autonomous units interact via their common environment. As an example, the game Ludo is modeled as a community of selfcontrolled players who interact on a common board. The emphasis of the presented approach is laid on the study of the formal semantics of a community as a whole and of each of its member units separately. In particular, a sequential as well as a parallel semantics is introduced, and communities with parallel semantics are compared with Petri nets, cellular automata, and multiagent systems.

Karsten Hlscher; Hans-Jrg Kreowski; Sabine Kuske

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Feasibility Study of Economics and Performance of Biomass Power Generation at the Former Farmland Industries Site in Lawrence, Kansas. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

Under the RE-Powering America's Land initiative, the U.S. Environmental Protection Agency (EPA) provided funding to the National Renewable Energy Laboratory (NREL) to support a feasibility study of biomass renewable energy generation at the former Farmland Industries site in Lawrence, Kansas. Feasibility assessment team members conducted a site assessment to gather information integral to this feasibility study. Information such as biomass resources, transmission availability, on-site uses for heat and power, community acceptance, and ground conditions were considered.

Tomberlin, G.; Mosey, G.

2013-03-01T23:59:59.000Z

182

Sequential data assimilation with multiple models  

Science Conference Proceedings (OSTI)

Data assimilation is an essential tool for predicting the behavior of real physical systems given approximate simulation models and limited observations. For many complex systems, there may exist several models, each with different properties and predictive ... Keywords: Data assimilation, Kalman filter, Model averaging, Uncertainty quantification

Akil Narayan; Youssef Marzouk; Dongbin Xiu

2012-08-01T23:59:59.000Z

183

SeQuential Biofuels LLC | Open Energy Information  

Open Energy Info (EERE)

SeQuential Biofuels LLC SeQuential Biofuels LLC Jump to: navigation, search Name SeQuential Biofuels LLC Place Portland, Oregon Zip 97231 Sector Biofuels Product A biofuels marketing and distribution company with several offices in Oregon. Coordinates 45.511795°, -122.675629° 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":45.511795,"lon":-122.675629,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

184

Repowering the void : negotiating connectivity  

E-Print Network (OSTI)

Rejecting the conception of building as island as reflected in American obsession with detached currently reinforced by Zero Energy Building, the thesis explores patterns of connectivity. largely results from insular ...

Lammert, Emily Jane

2008-01-01T23:59:59.000Z

185

Can Sequentially Linked Gamma-Ray Bursts Nullify Randomness?  

E-Print Network (OSTI)

In order to nullify the property of randomness perceived in the dispersion of gamma-ray bursts (GRB's) we introduce two new procedures. 1. Create a segmented group of sequentially linked GRB's and quantify the resultant angles. 2. Create segmented groups of sequentially linked GRB's in order to identify the location of GRB's that are positioned at equidistance, by using the selected GRB as the origin for a paired point circle, where the circumference of said circle intercepts the location of other GRB's in the same group.

Charles Fleischer

2012-05-02T23:59:59.000Z

186

SEQUENTIAL ORDER UNDER MA ALAN DOW  

E-Print Network (OSTI)

system t* *his sequence of random variables is tight (as N varies), while for the non-interacting parti.1)), and that b 6= 0. a) The sequence ( k(f))k~1is tight (or, bounded in probability). b) If further f variances ~oe2n;sand ~oe2n; furthermore, (3.27) and (3.28) and ff

Dow, Alan

187

Light-Weight Radioisotope Heater Unit (LWRHU) sequential impact tests  

SciTech Connect

The light-weight radioisotope heater unit (LWRHU) is a {sup 238}PuO{sub 2}-fueled heat source designed to provide one thermal watt in each of various locations on a spacecraft. Los Alamos National Laboratory designed, fabricated, and safety tested the LWRHU. The heat source consists of a hot-pressed {sup 238}PuO{sub 2} fuel pellet, a Pt-30Rh vented capsule, a pyrolytic graphite insulator, and a fineweave-pierced fabric graphite aeroshell assembly. A series of sequential impacts tests using simulant-fueled LWRHU capsules was recently conducted to determine a failure threshold. Sequential impacting, in both end-on and side-on orientations, resulted in increased damage with each subsequent impact. Although the tests were conducted until the aeroshells were sufficiently distorted to be out of dimensional specification, the simulant-fueled capsules used in these tests were not severely deformed. Sequential impacting of the LWRHU appears to result in slightly greater damage than a single impact at the final impact velocity of 50 m/s. Postimpact examination revealed that the sequentially impacted capsules were slightly more deformed and were outside of dimensional specifications.

Reimus, M.A.H.; Rinehart, G.H.

1997-08-01T23:59:59.000Z

188

Constraints of mixing matrix elements in the sequential fourthgeneration model  

E-Print Network (OSTI)

We review our works on the sequential fourth generation model and focus on the constriants of $4\\times 4$ quark mixing matrix elements. We investigate the quark mixing matrix elements from the rare $K,B$ meson decays. We talk about the $ hierarchy$ of the $4\\times 4$ matrix and the existence of fourth generation.

Huo, W J

2002-01-01T23:59:59.000Z

189

Functionalized sorbent for chemical separations and sequential forming process  

DOE Patents (OSTI)

A highly functionalized sorbent and sequential process for making are disclosed. The sorbent includes organic short-length amino silanes and organic oligomeric polyfunctional amino silanes that are dispersed within pores of a porous support that form a 3-dimensional structure containing highly functionalized active binding sites for sorption of analytes.

Fryxell, Glen E. (Kennewick, WA); Zemanian, Thomas S. (Richland, WA)

2012-03-20T23:59:59.000Z

190

Clustering and Sequential Pattern Mining of Online Collaborative Learning Data  

Science Conference Proceedings (OSTI)

Group work is widespread in education. The growing use of online tools supporting group work generates huge amounts of data. We aim to exploit this data to support mirroring: presenting useful high-level views of information about the group, together ... Keywords: Data mining, clustering, sequential pattern mining, learning group work skills, collaborative learning, computer-assisted instruction.

Dilhan Perera; Judy Kay; Irena Koprinska; Kalina Yacef; Osmar R. Zaane

2009-06-01T23:59:59.000Z

191

Sequential Inference for Latent Force Models  

E-Print Network (OSTI)

Latent force models (LFMs) are hybrid models combining mechanistic principles with non-parametric components. In this article, we shall show how LFMs can be equivalently formulated and solved using the state variable approach. We shall also show how the Gaussian process prior used in LFMs can be equivalently formulated as a linear statespace model driven by a white noise process and how inference on the resulting model can be efficiently implemented using Kalman filter and smoother. Then we shall show how the recently proposed switching LFM can be reformulated using the state variable approach, and how we can construct a probabilistic model for the switches by formulating a similar switching LFM as a switching linear dynamic system (SLDS). We illustrate the performance of the proposed methodology in simulated scenarios and apply it to inferring the switching points in GPS data collected from car movement data in urban environment.

Hartikainen, Jouni

2012-01-01T23:59:59.000Z

192

Sequential circuit design for radiation hardened multiple voltage integrated circuits  

DOE Patents (OSTI)

The present invention includes a radiation hardened sequential circuit, such as a bistable circuit, flip-flop or other suitable design that presents substantial immunity to ionizing radiation while simultaneously maintaining a low operating voltage. In one embodiment, the circuit includes a plurality of logic elements that operate on relatively low voltage, and a master and slave latches each having storage elements that operate on a relatively high voltage.

Clark, Lawrence T. (Phoenix, AZ); McIver, III, John K. (Albuquerque, NM)

2009-11-24T23:59:59.000Z

193

Sequential Importance Sampling for Rare Event Estimation with Computer Experiments  

SciTech Connect

Importance sampling often drastically improves the variance of percentile and quantile estimators of rare events. We propose a sequential strategy for iterative refinement of importance distributions for sampling uncertain inputs to a computer model to estimate quantiles of model output or the probability that the model output exceeds a fixed or random threshold. A framework is introduced for updating a model surrogate to maximize its predictive capability for rare event estimation with sequential importance sampling. Examples of the proposed methodology involving materials strength and nuclear reactor applications will be presented. The conclusions are: (1) Importance sampling improves UQ of percentile and quantile estimates relative to brute force approach; (2) Benefits of importance sampling increase as percentiles become more extreme; (3) Iterative refinement improves importance distributions in relatively few iterations; (4) Surrogates are necessary for slow running codes; (5) Sequential design improves surrogate quality in region of parameter space indicated by importance distributions; and (6) Importance distributions and VRFs stabilize quickly, while quantile estimates may converge slowly.

Williams, Brian J. [Los Alamos National Laboratory; Picard, Richard R. [Los Alamos National Laboratory

2012-06-25T23:59:59.000Z

194

Sequential high temperature reduction, low temperature hydrolysis for the regeneration of sulfated NOx trap catalysts  

SciTech Connect

We describe a new method that minimizes irreversible Pt sintering during the desulfation of sulfated Pt/BaO/Al2O3 lean NOx trap (LNT) catalysts. While it is known that the addition of H2O to H2 promotes desulfation, we find that the significant and irreversible Pt sintering arising from the presence of water is unavoidable. Control of precious metal sintering is considered to be one of the critical issues in the development of durable LNT catalysts. The new method described here is a sequential desulfation process: the first step is to reduce the sulfates with hydrogen only at higher temperatures to form BaS, followed by a treatment of the thus reduced sample with water at low to moderate temperatures to convert BaS to BaO and H2S. The data showed that Pt sintering was significantly inhibited due to the absence of H2O during the desulfation at high temperatures, and also demonstrates the similar NOx uptake with the desulfated sample cooperatively with H2 and H2O. Therefore, the sequential desulfation process may find applications in realistic systems to inhibit the irreversible sintering of the Pt in the lean NOx trap catalyst, leading to a longer catalyst life.

Kim, Do Heui; Kwak, Ja Hun; Wang, Xianqin; Szanyi, Janos; Peden, Charles HF

2008-07-15T23:59:59.000Z

195

A sequential growth dynamics for a directed acyclic dyadic graph  

E-Print Network (OSTI)

A model of discrete spacetime on a microscopic level is considered. It is a directed acyclic dyadic graph. This is the particular case of a causal set. The goal of this model is to describe particles as some repetitive symmetrical self-organized structures of the graph without any reference to continuous spacetime. The dynamics of the model is considered. This dynamics is stochastic sequential additions of new vertexes. Growth of the graph is a Markovian process. This dynamics is a consequence of a causality principle.

Alexey L. Krugly

2011-12-05T23:59:59.000Z

196

Theoretical study of a localized quantum spin reversal by the sequential injection of spins in a spin quantum dot  

E-Print Network (OSTI)

This is a theoretical study of the reversal of a localized quantum spin induced by sequential injection of spins for a spin quantum dot that has a quantum spin. The system consists of ``electrode/quantum well(QW)/dot/QW/electrode" junctions, in which the left QW has an energy level of conduction electrons with only up-spin. We consider a situation in which up-spin electrons are sequentially injected from the left electrode into the dot through the QW and an exchange interaction acts between the electrons and the localized spin. To describe the sequentially injected electrons, we propose a simple method based on approximate solutions from the time-dependent Schr$\\ddot{\\rm o}$dinger equation. Using this method, it is shown that the spin reversal occurs when the right QW has energy levels of conduction electrons with only down-spin. In particular, the expression of the reversal time of a localized spin is derived and the upper and lower limits of the time are clearly expressed. This expression is expected to be useful for a rough estimation of the minimum relaxation time of the localized spin to achieve the reversal. We also obtain analytic expressions for the expectation value of the localized spin and the electrical current as a function of time. In addition, we found that a system with the non-magnetic right QW exhibits spin reversal or non-reversal depending on the exchange interaction.

Satoshi Kokado; Kazumasa Ueda; Kikuo Harigaya; Akimasa Sakuma

2007-08-10T23:59:59.000Z

197

Lessons Learned from the Puerto Rico Battery Energy Storage System  

DOE Green Energy (OSTI)

The Puerto Rico Electric Power Authority (PREPA) installed a battery energy storage system in 1994 at a substation near San Juan, Puerto Rico. It was patterned after two other large energy storage systems operated by electric utilities in California and Germany. The Puerto Rico facility is presently the largest operating battery storage system in the world and has successfully provided frequency control, voltage regulation, and spinning reseme to the Caribbean island. The system further proved its usefulness to the PREPA network in the fall of 1998 in the aftermath of Hurricane Georges. However, the facility has suffered accelerated cell failures in the past year and PREPA is committed to restoring the plant to full capacity. This represents the first repowering of a large utility battery facility. PREPA and its vendors and contractors learned many valuable lessons during all phases of project development and operation, which are summarized in this paper.

Boyes, John D.; De Anda, Mindi Farber; Torres, Wenceslao

1999-08-11T23:59:59.000Z

198

A robust geometry estimation method for spiral, sequential and circular cone-beam micro-CT  

Science Conference Proceedings (OSTI)

Purpose: The authors propose a novel method for misalignment estimation of micro-CT scanners using an adaptive genetic algorithm. Methods: The proposed algorithm is able to estimate the rotational geometry, the direction vector of table movement and the displacement between different imaging threads of a dual source or even multisource scanner. The calibration procedure does not rely on dedicated calibration phantoms and a sequence scan of a single metal bead is sufficient to geometrically calibrate the whole imaging system for spiral, sequential, and circular scan protocols. Dual source spiral and sequential scan protocols in micro-computed tomography result in projection data that-besides the source and detector positions and orientations-also require a precise knowledge of the table direction vector to be reconstructed properly. If those geometric parameters are not known accurately severe artifacts and a loss in spatial resolution appear in the reconstructed images as long as no geometry calibration is performed. The table direction vector is further required to ensure that consecutive volumes of a sequence scan can be stitched together and to allow the reconstruction of spiral data at all. Results: The algorithm's performance is evaluated using simulations of a micro-CT system with known geometry and misalignment. To assess the quality of the algorithm in a real world scenario the calibration of a micro-CT scanner is performed and several reconstructions with and without geometry estimation are presented. Conclusions: The results indicate that the algorithm successfully estimates all geometry parameters, misalignment artifacts in the reconstructed volumes vanish, and the spatial resolution is increased as can be shown by the evaluation of modulation transfer function measurements.

Sawall, Stefan; Knaup, Michael; Kachelriess, Marc [Institute of Medical Physics (IMP), University of Erlangen-Nuernberg, 91052 Erlangen (Germany); Institute of Medical Physics (IMP), University of Erlangen-Nuernberg, 91052 Erlangen (Germany) and Medical Physics in Radiology, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg (Germany)

2012-09-15T23:59:59.000Z

199

Sequentially linear analysis of shear critical reinforced concrete beams without shear reinforcement  

Science Conference Proceedings (OSTI)

Analyzing brittle structures with nonlinear finite element analysis is frequently attended with numerical problems. As an alternative method sequentially linear analysis could be utilized, resulting in the avoidance of convergence and bifurcation problems. ... Keywords: Brittle failure behavior, Cracking, Reinforced concrete, Sequentially linear analysis, Shear critical beam, Shear retention

A. T. Slobbe; M. A. N. Hendriks; J. G. Rots

2012-03-01T23:59:59.000Z

200

Efficiently speeding up sequential computation through the n-way programming model  

Science Conference Proceedings (OSTI)

With core counts on the rise, the sequential components of applications are becoming the major bottleneck in performance scaling as predicted by Amdahl's law. We are therefore faced with the simultaneous problems of occupying an increasing number of ... Keywords: algorithmic diversity, n-way, parallel programming model, sequential computations, speedup

Romain E. Cledat; Tushar Kumar; Santosh Pande

2011-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Warped K-Means: An algorithm to cluster sequentially-distributed data  

Science Conference Proceedings (OSTI)

Many devices generate large amounts of data that follow some sort of sequentiality, e.g., motion sensors, e-pens, eye trackers, etc. and often these data need to be compressed for classification, storage, and/or retrieval tasks. Traditional clustering ... Keywords: Data compression, Data simplification, Partitional clustering, Sequential data, Trajectory segmentation

Luis A. Leiva, Enrique Vidal

2013-07-01T23:59:59.000Z

202

A module-level three-stage approach to the evolutionary design of sequential logic circuits  

Science Conference Proceedings (OSTI)

In this study, we propose a module-level three-stage approach (TSA) to optimize the evolutionary design for synchronous sequential circuits. TSA has a three stages process, involving a genetic algorithm (GA), a pre-evolution, and a re-evolution. In the ... Keywords: Data mining, Evolutionary approach, Frequently evolved blocks, Module-level, Redundant states, Sequential circuits, Three-stage

Yanyun Tao; Yuzhen Zhang; Jian Cao; Yalong Huang

2013-06-01T23:59:59.000Z

203

Brief Communication: Design of multiplex PCR primers using heuristic algorithm for sequential deletion applications  

Science Conference Proceedings (OSTI)

The sequential deletion method is commonly applied to locate the functional domain of a protein. Unfortunately, manually designing primers for multiplex polymerase chain reaction (PCR) is a labor-intensive task. In order to speed up the experimental ... Keywords: Multiplex polymerase chain reaction (PCR), N-terminal truncated mutants, Polyacrylamide gel electrophoresis (PAGE), Sequential deletion

Yung-Fu Chen; Rung-Ching Chen; Yung-Kuan Chan; Ren-Hao Pan; You-Cheng Hseu; Elong Lin

2009-04-01T23:59:59.000Z

204

GRADIENT INDEX SPHERES BY THE SEQUENTIAL ACCRETION OF GLASS POWDERS  

Science Conference Proceedings (OSTI)

The Department of Energy is seeking a method for fabricating mm-scale spheres having a refractive index that varies smoothly and continuously from the center to its surface [1]. The fabrication procedure must allow the creation of a range of index profiles. The spheres are to be optically transparent and have a refractive index differential greater than 0.2. The sphere materials can be either organic or inorganic and the fabrication technique must be capable of scaling to low cost production. Mo-Sci Corporation proposed to develop optical quality gradient refractive index (GRIN) glass spheres of millimeter scale (1 to 2 mm diameter) by the sequential accretion and consolidation of glass powders. Other techniques were also tested to make GRIN spheres as the powder-accretion method produced non-concentric layers and poor optical quality glass spheres. Potential ways to make the GRIN spheres were (1) by "coating" glass spheres (1 to 2 mm diameter) with molten glass in a two step process; and (2) by coating glass spheres with polymer layers.

MARIANO VELEZ

2008-06-15T23:59:59.000Z

205

Combined search for the quarks of a sequential fourth generation  

E-Print Network (OSTI)

Results are presented from a search for a fourth generation of quarks produced singly or in pairs in a data set corresponding to an integrated luminosity of 5 inverse femtobarns recorded by the CMS experiment at the LHC in 2011. A novel strategy has been developed for a combined search for quarks of the up- and down-type in decay channels with at least one isolated muon or electron. Limits on the mass of the fourth-generation quarks and the relevant CKM matrix elements are derived in the context of a simple extension of the standard model with a sequential fourth generation of fermions. The existence of mass-degenerate fourth-generation quarks with masses below 685 GeV is excluded at 95% confidence level for minimal off-diagonal mixing between the third- and the fourth-generation quarks. With a mass difference of 25 GeV between the quark masses, the obtained limit on the masses of the fourth-generation quarks shifts by about +/- 20 GeV. This result significantly reduces the allowed parameter space for a fourt...

Chatrchyan, Serguei; Sirunyan, Albert M; Tumasyan, Armen; Adam, Wolfgang; Aguilo, Ernest; Bergauer, Thomas; Dragicevic, Marko; Er, Janos; Fabjan, Christian; Friedl, Markus; Fruehwirth, Rudolf; Ghete, Vasile Mihai; Hammer, Josef; Hrmann, Natascha; Hrubec, Josef; Jeitler, Manfred; Kiesenhofer, Wolfgang; Knnz, Valentin; Krammer, Manfred; Krtschmer, Ilse; Liko, Dietrich; Mikulec, Ivan; Pernicka, Manfred; Rahbaran, Babak; Rohringer, Christine; Rohringer, Herbert; Schfbeck, Robert; Strauss, Josef; Taurok, Anton; Waltenberger, Wolfgang; Walzel, Gerhard; Widl, Edmund; Wulz, Claudia-Elisabeth; Mossolov, Vladimir; Shumeiko, Nikolai; Suarez Gonzalez, Juan; Bansal, Monika; Bansal, Sunil; Cornelis, Tom; De Wolf, Eddi A; Janssen, Xavier; Luyckx, Sten; Mucibello, Luca; Ochesanu, Silvia; Roland, Benoit; Rougny, Romain; Selvaggi, Michele; Staykova, Zlatka; Van Haevermaet, Hans; Van Mechelen, Pierre; Van Remortel, Nick; Van Spilbeeck, Alex; Blekman, Freya; Blyweert, Stijn; D'Hondt, Jorgen; Gonzalez Suarez, Rebeca; Kalogeropoulos, Alexis; Maes, Michael; Olbrechts, Annik; Van Doninck, Walter; Van Mulders, Petra; Van Onsem, Gerrit Patrick; Villella, Ilaria; Clerbaux, Barbara; De Lentdecker, Gilles; Dero, Vincent; Gay, Arnaud; Hreus, Tomas; Lonard, Alexandre; Marage, Pierre Edouard; Mohammadi, Abdollah; Reis, Thomas; Thomas, Laurent; Vander Marcken, Gil; Vander Velde, Catherine; Vanlaer, Pascal; Wang, Jian; Adler, Volker; Beernaert, Kelly; Cimmino, Anna; Costantini, Silvia; Garcia, Guillaume; Grunewald, Martin; Klein, Benjamin; Lellouch, Jrmie; Marinov, Andrey; Mccartin, Joseph; Ocampo Rios, Alberto Andres; Ryckbosch, Dirk; Strobbe, Nadja; Thyssen, Filip; Tytgat, Michael; Verwilligen, Piet; Walsh, Sinead; Yazgan, Efe; Zaganidis, Nicolas; Basegmez, Suzan; Bruno, Giacomo; Castello, Roberto; Ceard, Ludivine; Delaere, Christophe; Du Pree, Tristan; Favart, Denis; Forthomme, Laurent; Giammanco, Andrea; Hollar, Jonathan; Lemaitre, Vincent; Liao, Junhui; Militaru, Otilia; Nuttens, Claude; Pagano, Davide; Pin, Arnaud; Piotrzkowski, Krzysztof; Schul, Nicolas; Vizan Garcia, Jesus Manuel; Beliy, Nikita; Caebergs, Thierry; Daubie, Evelyne; Hammad, Gregory Habib; Alves, Gilvan; Correa Martins Junior, Marcos; De Jesus Damiao, Dilson; Martins, Thiago; Pol, Maria Elena; Henrique Gomes E Souza, Moacyr; Ald Jnior, Walter Luiz; Carvalho, Wagner; Custdio, Analu; Da Costa, Eliza Melo; De Oliveira Martins, Carley; Fonseca De Souza, Sandro; Matos Figueiredo, Diego; Mundim, Luiz; Nogima, Helio; Oguri, Vitor; Prado Da Silva, Wanda Lucia; Santoro, Alberto; Soares Jorge, Luana; Sznajder, Andre; Souza Dos Anjos, Tiago; Bernardes, Cesar Augusto; De Almeida Dias, Flavia; Tomei, Thiago; De Moraes Gregores, Eduardo; Lagana, Caio; Da Cunha Marinho, Franciole; Mercadante, Pedro G; Novaes, Sergio F; Padula, Sandra; Genchev, Vladimir; Iaydjiev, Plamen; Piperov, Stefan; Rodozov, Mircho; Stoykova, Stefka; Sultanov, Georgi; Tcholakov, Vanio; Trayanov, Rumen; Vutova, Mariana; Dimitrov, Anton; Hadjiiska, Roumyana; Kozhuharov, Venelin; Litov, Leander; Pavlov, Borislav; Petkov, Peicho; Bian, Jian-Guo; Chen, Guo-Ming; Chen, He-Sheng; Jiang, Chun-Hua; Liang, Dong; Liang, Song; Meng, Xiangwei; Tao, Junquan; Wang, Jian; Wang, Xianyou; Wang, Zheng; Xiao, Hong; Xu, Ming; Zang, Jingjing; Zhang, Zhen; Asawatangtrakuldee, Chayanit; Ban, Yong; Guo, Shuang; Guo, Yifei; Li, Wenbo; Liu, Shuai; Mao, Yajun; Qian, Si-Jin; Teng, Haiyun; Wang, Dayong; Zhang, Linlin; Zhu, Bo; Zou, Wei; Avila, Carlos; Gomez, Juan Pablo; Gomez Moreno, Bernardo; Osorio Oliveros, Andres Felipe; Sanabria, Juan Carlos; Godinovic, Nikola; Lelas, Damir; Plestina, Roko; Polic, Dunja; Puljak, Ivica; Antunovic, Zeljko; Kovac, Marko; Brigljevic, Vuko; Duric, Senka; Kadija, Kreso; Luetic, Jelena; Morovic, Srecko; Attikis, Alexandros; Galanti, Mario; Mavromanolakis, Georgios; Mousa, Jehad; Nicolaou, Charalambos; Ptochos, Fotios; Razis, Panos A; Finger, Miroslav; Finger Jr, Michael; Assran, Yasser; Elgammal, Sherif; Ellithi Kamel, Ali; Khalil, Shaaban; Mahmoud, Mohammed; Radi, Amr; Kadastik, Mario; Mntel, Mait; Raidal, Martti; Rebane, Liis; Tiko, Andres; Eerola, Paula; Fedi, Giacomo; Voutilainen, Mikko; Hrknen, Jaakko; Heikkinen, Mika Aatos; Karimki, Veikko; Kinnunen, Ritva; Kortelainen, Matti J; Lampn, Tapio; Lassila-Perini, Kati; Lehti, Sami; Lindn, Tomas; Luukka, Panja-Riina; Menp, Teppo; Peltola, Timo; Tuominen, Eija; Tuominiemi, Jorma; Tuovinen, Esa; Ungaro, Donatella; Wendland, Lauri; Banzuzi, Kukka; Karjalainen, Ahti; Korpela, Arja; Tuuva, Tuure; Besancon, Marc; Choudhury, Somnath

2012-01-01T23:59:59.000Z

206

Naval Station Newport Wind Resource Assessment. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites, and The Naval Facilities Engineering Service Center  

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

Naval Station Newport Naval Station Newport Wind Resource Assessment A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites, and The Naval Facilities Engineering Service Center Robi Robichaud, Jason Fields, and Joseph Owen Roberts Technical Report NREL/TP-6A20-52801 February 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Naval Station Newport

207

Combustion Engineering Integrated Gasification Combined Cycle (IGCC) Repowering Project -- Clean Coal II Project. Annual report, November 20, 1990--December 31, 1991  

SciTech Connect

The IGCC system will consist of CE`s air-blown, entrained-flow, two-stage, pressurized coal gasifier; an advanced hot gas cleanup process; a combustion turbine adapted to use low-Btu coal gas; and all necessary coal handling equipment. The IGCC will include CE`s slogging, entrained-flow, gasifier operating in a pressurized mode and using air as the oxidant. The hot gas will be cleaned of particulate matter (char) which is recycled back to the gasifier. After particulate removal, the product gas will be cleaned of sulfur prior to burning in a gas turbine. The proposed project includes design and demonstration of two advanced hot gas cleanup processes for removal of sulfur from the product gas of the gasifier. The primary sulfur removal method features a newly developed moving-bed zinc ferrite system downstream of the gasifier. The process data from these pilot tests is expected to be sufficient for the design of a full-scale system to be used in the proposed demonstration. A second complementary process is in situ desulfurization achieved by adding limestone or dolomite directly to the coal feed. The benefit, should such an approach prove viable, is that the downstream cleanup system could be reduced in size. In this plant, the gasifier will be producing a low-Btu gas (LBG). The LBG will be used as fuel in a standard GE gas turbine to produce power. This gas turbine will have the capability to fire LBG and natural gas (for start-up). Since firing LBG uses less air than natural gas, the gas turbine air compressor will have extra capacity. This extra compressed air will be used to pressurize the gasifier and supply the air needed in the gasification process. The plant is made of three major blocks of equipment as shown in Figure 2. They are the fuel gas island which includes the gasifier and gas cleanup, gas turbine power block, and the steam turbine block which includes the steam turbine and the HRSG.

1993-03-01T23:59:59.000Z

208

PROPERTIES OF SEQUENTIAL CHROMOSPHERIC BRIGHTENINGS AND ASSOCIATED FLARE RIBBONS  

SciTech Connect

We report on the physical properties of solar sequential chromospheric brightenings (SCBs) observed in conjunction with moderate-sized chromospheric flares with associated Coronal mass ejections. To characterize these ephemeral events, we developed automated procedures to identify and track subsections (kernels) of solar flares and associated SCBs using high-resolution H{alpha} images. Following the algorithmic identification and a statistical analysis, we compare and find the following: SCBs are distinctly different from flare kernels in their temporal characteristics of intensity, Doppler structure, duration, and location properties. We demonstrate that flare ribbons are themselves made up of subsections exhibiting differing characteristics. Flare kernels are measured to have a mean propagation speed of 0.2 km s{sup -1} and a maximum speed of 2.3 km s{sup -1} over a mean distance of 5 Multiplication-Sign 10{sup 3} km. Within the studied population of SCBs, different classes of characteristics are observed with coincident negative, positive, or both negative and positive Doppler shifts of a few km s{sup -1}. The appearance of SCBs precedes peak flare intensity by Almost-Equal-To 12 minutes and decay Almost-Equal-To 1 hr later. They are also found to propagate laterally away from flare center in clusters at 45 km s{sup -1} or 117 km s{sup -1}. Given SCBs' distinctive nature compared to flares, we suggest a different physical mechanism relating to their origin than the associated flare. We present a heuristic model of the origin of SCBs.

Kirk, Michael S.; Balasubramaniam, K. S.; Jackiewicz, Jason; McAteer, R. T. James [Department of Astronomy, New Mexico State University, P.O. Box 30001, MSC 4500, Las Cruces, NM 88003-8001 (United States); Milligan, Ryan O., E-mail: mskirk@nmsu.edu [Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, University Road Belfast, BT7 1NN (United Kingdom)

2012-05-10T23:59:59.000Z

209

UC Berkeley computer science Subject: Introducing sequential behavior in Fleet  

E-Print Network (OSTI)

This memo started as a presentation of one idea for introducing sequentiality into an instruction issue mechanism for Fleet. The idea was the concept of a logical clock. Even though the idea was far from polished, I decided it was valuable to record the idea and possibly sharpen it during the writing process. As I was writing the memo, I was following my train of thought, got stuck a number of times, and ended up wring a memo that describes a whole collection of unpolished ideas. I still believe the exercise was worth undertaking, not only for the sheer benefits of what is recorded in this memo but for the benefit of at least five more memos that got started while I was writing this memo. BASE MODEL: A POOL OF CONCURRENT INSTRUCTIONS Figure 1 shows an abstract view of Fleet processor architecture. Note that the core elements of Fleet remain in the picture: Ships are connected via a switch fabric, where each ship serves as both a source of data and a destination for data. The switch fabric enables data transfer between ships. That is, each move instruction that the instruction issue unit releases into the switch fabric transfers data between a source ship and a destination ship. Note that execution of an instruction is limited to the data transfer itself. Any data transformation that may happen inside a ship is a part of operation of the ship. As a result of such an operation, a new data item may be available at the ships source port. One can say that data transformation takes place as a side effect of data movement. _____________________________________________________________________________ This document is a product of a collaboration between Sun Microsystems and the University of California at Berkeley. The ideas contained herein are freely available for any academic purpose.

Igor Benko

2005-01-01T23:59:59.000Z

210

An Inverse Method for Tracking Ice Motion in the Marginal Ice Zone Using Sequential Satellite Images  

Science Conference Proceedings (OSTI)

A new method for tracking ice motion and estimating ocean surface currents from sequential satellite images is presented. It is particularly suited for the marginal ice zone. A simple ice advection model, driven by wind and surface currents, is ...

Mark Buehner; Keith R. Thompson; Ingrid Peterson

1997-12-01T23:59:59.000Z

211

A Sequential Variational Algorithm for Data Assimilation in Oceanography and Meteorology  

Science Conference Proceedings (OSTI)

This study theoretically establishes a sequential variational (SVAR) method for the data assimilation in oceanography and meteorology defined on the model space. Requiring a significantly smaller amount of computer memory, theoretically SVAR ...

Srdjan Dobricic

2009-01-01T23:59:59.000Z

212

Rational plunging and the option value of sequential investment : the case of petroleum exploration  

E-Print Network (OSTI)

Any investor in assets that can be exploited sequentially faces a tradeoff between diversification and concentration. Loading a portfolio with correlated assets has the potential to inflate variance, but also creates ...

Smith, James L.

2006-01-01T23:59:59.000Z

213

Extracting Multiyear Surface Currents from Sequential Thermal Imagery Using the Maximum Cross-Correlation Technique  

Science Conference Proceedings (OSTI)

Ocean surface circulation can be estimated by automated tracking of thermal infrared features in pairs of sequential satellite imagery. A 7-yr time series of velocity, extracted from thermal imagery of the East Australian Current using the ...

Melissa M. Bowen; William J. Emery; John L. Wilkin; Paul C. Tildesley; Ian J. Barton; Rebecca Knewtson

2002-10-01T23:59:59.000Z

214

Computer-Controlled Automated Rain Sampler (CCARS) for Rainfall Measurement and Sequential Sampling  

Science Conference Proceedings (OSTI)

The Computer-Controlled Automated Rain Sampler (CCARS) is a combination rain gage and sequential sampler for precipitation chemistry measurements. The primary objectives of the design are low cost, versatility of operational mode, and remote ...

Stan D. Tomich; M. Terry Dana

1990-08-01T23:59:59.000Z

215

Concurrencer: a tool for retrofitting concurrency into sequential Java applications via concurrent libraries  

E-Print Network (OSTI)

Parallelizing existing sequential programs to run efficiently on multicores is hard. The Java 5 package java.util.concurrent (j.u.c.) supports writing concurrent programs. To use this package, programmers still need to ...

Dig, Danny

216

An Application of Sequential Variational Method without Tangent Linear and Adjoint Model Integrations  

Science Conference Proceedings (OSTI)

The sequential variational (SVAR) method minimizes the weakly constrained four-dimensional cost function by splitting it into a set of smaller cost functions. This study shows how it is possible to apply SVAR in practice by reducing the ...

Srdjan Dobricic

2013-01-01T23:59:59.000Z

217

Analysis of Parallel versus Sequential Splittings for Time-Stepping Physical Parameterizations  

Science Conference Proceedings (OSTI)

Various numerical issues concerning different approaches to the time stepping of physical parameterizations in numerical weather prediction (NWP) and climate models are examined. Parallel-split and sequential-split methods are explained and ...

Mark Dubal; Nigel Wood; Andrew Staniforth

2004-01-01T23:59:59.000Z

218

Sequential State and Variance Estimation within the Ensemble Kalman Filter  

Science Conference Proceedings (OSTI)

Kalman filter methods for real-time assimilation of observations and dynamical systems typically assume knowledge of the system parameters. However, relatively little work has been done on extending state estimation procedures to include ...

Jonathan R. Stroud; Thomas Bengtsson

2007-09-01T23:59:59.000Z

219

Wabash River Coal Gasification Repowering Project  

SciTech Connect

The Destec gasification process features an oxygen-blown, two stage entrained flow gasifier. PSI will procure coal for the Project consistent with the design specification ranges of Destec's coal gasification facility. Destec's plant will be designed to accept coal with a maximum sulfur content of 5.9% (dry basis) and a minimum energy content of 13,5000 BTU/pound (moisture and ash free basis). PSI and Destec will test at least two other coals for significant periods during the demonstration period. In the Destec process, coal is ground with water to form a slurry. It is then pumped into a gasification vessel where oxygen is added to form a hot raw gas through partial combustion. Most of the noncarbon material in the coal melts and flows out the bottom of the vessel forming slag -- a black, glassy, non-leaching, sand-like material. Particulates, sulfur and other impurities are removed from the gas before combustion to make it acceptable fuel for the gas turbine. The synthetic fuel gas (syngas) is piped to a General Electric MS 7001F high temperature combustion turbine generator. A heat recovery steam generator recovers gas turbine exhaust heat to produce high pressure steam. This steam and the steam generated in the gasification process supply an existing steam turbine-generator. The plant will be designed to outperform air emission standards established by the Clean Air Act Amendments for the year 2000.

Amick, P.; Mann, G.J.; Cook, J.J.; Fisackerly, R.; Spears, R.C.

1992-01-01T23:59:59.000Z

220

Wabash River Coal Gasification Repowering Project  

SciTech Connect

The Destec gasification process features an oxygen-blown, two stage entrained flow gasifier. PSI will procure coal for the Project consistent with the design specification ranges of Destec`s coal gasification facility. Destec`s plant will be designed to accept coal with a maximum sulfur content of 5.9% (dry basis) and a minimum energy content of 13,5000 BTU/pound (moisture and ash free basis). PSI and Destec will test at least two other coals for significant periods during the demonstration period. In the Destec process, coal is ground with water to form a slurry. It is then pumped into a gasification vessel where oxygen is added to form a hot raw gas through partial combustion. Most of the noncarbon material in the coal melts and flows out the bottom of the vessel forming slag -- a black, glassy, non-leaching, sand-like material. Particulates, sulfur and other impurities are removed from the gas before combustion to make it acceptable fuel for the gas turbine. The synthetic fuel gas (syngas) is piped to a General Electric MS 7001F high temperature combustion turbine generator. A heat recovery steam generator recovers gas turbine exhaust heat to produce high pressure steam. This steam and the steam generated in the gasification process supply an existing steam turbine-generator. The plant will be designed to outperform air emission standards established by the Clean Air Act Amendments for the year 2000.

Amick, P.; Mann, G.J.; Cook, J.J.; Fisackerly, R.; Spears, R.C.

1992-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Wind Power Project Repowering: Financial Feasibility, Decision...  

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

advancements, have resulted in significant increases in net capacity factors for utility-scale wind plants over the past 13 years (Lantz et al. 2012). Changes are...

222

Solar repowering workshop: a summary report  

DOE Green Energy (OSTI)

The workshop was divided into two groups. Group A discussed key issues in the demand for solar thermal technologies; Group B discussed key issues in the supply of solar thermal technologies. Discussion questions prepared prior to the workshop are listed and the responses are summarized. The workshop agenda and the list of participants are included. (MHR)

Nordman, D.

1978-08-02T23:59:59.000Z

223

Repowering of the Midland Nuclear Station  

E-Print Network (OSTI)

The conversion of the Midland Nuclear Station to a combined cycle power facility is the first of its kind. The existing nuclear steam turbine, combined with new, natural-gas-fired gas turbines, will create the largest cogeneration facility in the United States. The paper describes the project and the converted facility.

Gatlin, C. E. Jr.; Vellender, G. C.; Mooney, J. A.

1988-09-01T23:59:59.000Z

224

Biomass Repowering Study for Plant Scholz  

Science Conference Proceedings (OSTI)

Southern Company and its subsidiary, Gulf Power, have identified Gulf Powers Plant Scholz as a potential target for conversion from coal firing to 100% biomass firing. Plant Scholz is located in Sneads, Florida, and was built in 1953. It is capable of generating up to 98 MW of electricity (gross) while operating on pulverized coal. Net generation at full load is about 93 MW. Modifying this unit to use wood fuel will significantly reduce air emissions rates for several regulated pollutants and is an optio...

2010-12-31T23:59:59.000Z

225

Coal-fired high performance power generating system. Draft quarterly progress report, January 1--March 31, 1995  

SciTech Connect

This report covers work carried out under Task 3, Preliminary R and D, under contract DE-AC22-92PC91155, ``Engineering Development of a Coal-Fired High Performance Power Generation System`` between DOE Pittsburgh Energy Technology Center and United Technologies Research Center. The goals of the program are to develop a coal-fired high performance power generation system (HIPPS) by the year 2000 that is capable of >47% thermal efficiency; NO{sub x}, SO{sub x} and particulates {le} 25% NSPS; cost {ge}65% of heat input; all solid wastes benign. A crucial aspect of the authors design is the integration of the gas turbine requirements with the HITAF output and steam cycle requirements. In order to take full advantage of modern highly efficient aeroderivative gas turbines they have carried out a large number of cycle calculations to optimize their commercial plant designs for both greenfield and repowering applications.

1995-10-01T23:59:59.000Z

226

Accurate sequential self-localization of sensor nodes in closed-form  

Science Conference Proceedings (OSTI)

This paper addresses the problem of obtaining an efficient estimator for sensor node self-localization using time of arrival (TOA) measurements. A sequential scheme is proposed that consists of closed-form single node localization and sensor position ... Keywords: Localization, Sensor position errors, Time of arrival (TOA)

M. Sun; L. Yang; K. C. Ho

2012-12-01T23:59:59.000Z

227

A sequential minimal optimization algorithm for the all-distances support vector machine  

Science Conference Proceedings (OSTI)

The All-Distances SVM is a single-objective light extension of the binary -SVM for multi-category classification that is competitive against multi-objective SVMs, such as One-against-the-Rest SVMs and One-against-One SVMs. Although the model takes ... Keywords: kernel machines, multi-category classification, sequential minimal optimization, support vector machines

Diego Candel; Ricardo anculef; Carlos Concha; Hctor Allende

2010-11-01T23:59:59.000Z

228

A Hybrid Architecture for Situated Learning of Reactive Sequential Decision Making  

Science Conference Proceedings (OSTI)

In developing autonomous agents, one usually emphasizes only (situated) procedural knowledge, ignoring more explicit declarative knowledge. On the other hand, in developing symbolic reasoning models, one usually emphasizes only declarative knowledge, ignoring ... Keywords: cognitive modeling, hybrid models, neural networks, reinforcement learning, sequential decision making

Ron Sun; Todd Peterson; Edward Merrill

1999-07-01T23:59:59.000Z

229

Semi-RAID: A reliable energy-aware RAID data layout for sequential data access  

Science Conference Proceedings (OSTI)

In this paper, we propose an alternative RAID data layout, Semi-RAID (S-RAID), for the kind of application that exhibits a sequential data access pattern. The data layout of S-RAID uses a grouping strategy that makes only part of the whole array active ...

Li Xiao; Tan Yu-An; Sun Zhizhuo

2011-05-01T23:59:59.000Z

230

Sequential parameter estimation of time-varying non-Gaussian autoregressive processes  

Science Conference Proceedings (OSTI)

Parameter estimation of time-varying non-Gaussian autoregressive processes can be a highly nonlinear problem. The problem gets even more difficult if the functional form of the time variation of the process parameters is unknown. In this paper, we address ... Keywords: Gaussian mixtures, forgetting factors, particle filtering, sequential importance sampling

Petar M. Djuri?; Jayesh H. Kotecha; Fabien Esteve; Etienne Perret

2002-01-01T23:59:59.000Z

231

Effective temporal data classification by integrating sequential pattern mining and probabilistic induction  

Science Conference Proceedings (OSTI)

Data classification is an important topic in the field of data mining due to its wide applications. A number of related methods have been proposed based on the well-known learning models such as decision tree or neural network. Although data classification ... Keywords: Classification, Data mining, Scoring method, Sequential pattern, Temporal data

Vincent S. Tseng; Chao-Hui Lee

2009-07-01T23:59:59.000Z

232

An agent-based stochastic ruler approach for a stochastic knapsack problem with sequential competition  

Science Conference Proceedings (OSTI)

We examine a situation in which a decision-maker executes a sequence of resource allocation decisions over time, but the availability of the indivisible resources at future epochs is uncertain due to actions of competitors. We cast this problem as a ... Keywords: Agent-based simulation, Beam search, Discrete stochastic optimization, Knapsack problem, Sequential allocation, Stochastic ruler

Matthew R. Gibson; Jeffrey W. Ohlmann; Michael J. Fry

2010-03-01T23:59:59.000Z

233

A Sequential Element Rejection and Admission (SERA) method for compliant mechanisms design  

Science Conference Proceedings (OSTI)

A Sequential Element Rejection and Admission (SERA) method to design compliant mechanisms with topology optimization techniques is presented in this work. This procedure allows material to flow between two different material models: `real' and `virtual'. ... Keywords: Compliant mechanisms, Parameter study, SERA method, Topology optimization

Cristina Alonso, Osvaldo M. Querin, Rubn Ansola

2013-06-01T23:59:59.000Z

234

A Sequential Game Perspective and Optimization of the Smart Grid with Distributed Data Centers  

E-Print Network (OSTI)

A Sequential Game Perspective and Optimization of the Smart Grid with Distributed Data Centers to their enormous energy consumption, data centers are expected to have major impact on the electric grid]. Data centers are expected to have a major impact on the electric grid by significantly increasing

Pedram, Massoud

235

Naval Station Newport Wind Resource Assessment. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites, and The Naval Facilities Engineering Service Center  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA) launched the RE-Powering America's Land initiative to encourage development of renewable energy (RE) on potentially contaminated land and mine sites. EPA is collaborating with the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL) to evaluate RE options at Naval Station (NAVSTA) Newport in Newport, Rhode Island where multiple contaminated areas pose a threat to human health and the environment. Designated a superfund site on the National Priorities List in 1989, the base is committed to working toward reducing the its dependency on fossil fuels, decreasing its carbon footprint, and implementing RE projects where feasible. The Naval Facilities Engineering Service Center (NFESC) partnered with NREL in February 2009 to investigate the potential for wind energy generation at a number of Naval and Marine bases on the East Coast. NAVSTA Newport was one of several bases chosen for a detailed, site-specific wind resource investigation. NAVSTA Newport, in conjunction with NREL and NFESC, has been actively engaged in assessing the wind resource through several ongoing efforts. This report focuses on the wind resource assessment, the estimated energy production of wind turbines, and a survey of potential wind turbine options based upon the site-specific wind resource.

Robichaud, R.; Fields, J.; Roberts, J. O.

2012-02-01T23:59:59.000Z

236

COMMUNICATING SEQUENTIAL PROCESSES C.A.R. Hoare's Communicating Sequential Processes CSP is a model-language  

E-Print Network (OSTI)

CSP is a model-language hybrid for describing concurrent and distributed computation. A CSP program the corresponding primitive. Guarded commands are used to introduce indeterminacy. CSP is a language fragment of CSP have been with issues of program correctness and operating systems description. CSP shows its

Filman, Robert E.

237

Argonne CNM News: A better etching technique: sequential infiltration  

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

A Better Etching Technique Is Invented A Better Etching Technique Is Invented Mark Holt (Argonne Center for Nanoscale Materials) examines a sample in the Hard X-Ray Nanoprobe Deep canyons can be etched into materials at the nanoscale with a new SIS-based lithography technique Nanoscientists at Argonne's Center for Nanoscale Materials and Energy Systems Division have discovered a new way to transfer patterns onto different materials, an innovation that combines new tricks with an old technology. One of the biggest recent questions facing materials science has involved the development of better techniques for high-resolution lithographies such as electron-beam (e-beam) lithography. E-beam lithography is used to manufacture the tiniest of structures, including microelectronics and advanced sensors; beams of electrons are part of a

238

Method for sequential injection of liquid samples for radioisotope separations  

DOE Patents (OSTI)

The present invention is a method of separating a short-lived daughter isotope from a longer lived parent isotope, with recovery of the parent isotope for further use. Using a system with a bi-directional pump and one or more valves, a solution of the parent isotope is processed to generate two separate solutions, one of which contains the daughter isotope, from which the parent has been removed with a high decontamination factor, and the other solution contains the recovered parent isotope. The process can be repeated on this solution of the parent isotope. The system with the fluid drive and one or more valves is controlled by a program on a microprocessor executing a series of steps to accomplish the operation. In one approach, the cow solution is passed through a separation medium that selectively retains the desired daughter isotope, while the parent isotope and the matrix pass through the medium. After washing this medium, the daughter is released from the separation medium using another solution. With the automated generator of the present invention, all solution handling steps necessary to perform a daughter/parent radionuclide separation, e.g. Bi-213 from Ac-225 "cow" solution, are performed in a consistent, enclosed, and remotely operated format. Operator exposure and spread of contamination are greatly minimized compared to the manual generator procedure described in U.S. patent application Ser. No. 08/789,973, now U.S. Pat. No. 5,749,042, herein incorporated by reference. Using 16 mCi of Ac-225 there was no detectable external contamination of the instrument components.

Egorov, Oleg B. (Richland, WA); Grate, Jay W. (West Richland, WA); Bray, Lane A. (Richland, WA)

2000-01-01T23:59:59.000Z

239

ELIGIBILITY CEC-300-2006-007-F  

E-Print Network (OSTI)

Commission's system for tracking and verifying compliance with the RPS. Keywords biodiesel, biogas, biomass, photovoltaic, power purchase agreement, renewable energy, renewables portfolio standard, repowered, retail..................................................... 7 1. Biodiesel

240

A sequential partly iterative approach for multicomponent reactive transport with CORE2D  

SciTech Connect

CORE{sup 2D} V4 is a finite element code for modeling partly or fully saturated water flow, heat transport and multicomponent reactive solute transport under both local chemical equilibrium and kinetic conditions. It can handle coupled microbial processes and geochemical reactions such as acid-base, aqueous complexation, redox, mineral dissolution/precipitation, gas dissolution/exsolution, ion exchange, sorption via linear and nonlinear isotherms, sorption via surface complexation. Hydraulic parameters may change due to mineral precipitation/dissolution reactions. Coupled transport and chemical equations are solved by using sequential iterative approaches. A sequential partly-iterative approach (SPIA) is presented which improves the accuracy of the traditional sequential noniterative approach (SNIA) and is more efficient than the general sequential iterative approach (SIA). While SNIA leads to a substantial saving of computing time, it introduces numerical errors which are especially large for cation exchange reactions. SPIA improves the efficiency of SIA because the iteration between transport and chemical equations is only performed in nodes with a large mass transfer between solid and liquid phases. The efficiency and accuracy of SPIA are compared to those of SIA and SNIA using synthetic examples and a case study of reactive transport through the Llobregat Delta aquitard in Spain. SPIA is found to be as accurate as SIA while requiring significantly less CPU time. In addition, SPIA is much more accurate than SNIA with only a minor increase in computing time. A further enhancement of the efficiency of SPIA is achieved by improving the efficiency of the Newton-Raphson method used for solving chemical equations. Such an improvement is obtained by working with increments of log-concentrations and ignoring the terms of the Jacobian matrix containing derivatives of activity coefficients. A proof is given for the symmetry and non-singularity of the Jacobian matrix. Numerical analyses performed with synthetic examples confirm that these modifications improve the efficiency and convergence of the iterative algorithm.

Samper, J.; Xu, T.; Yang, C.

2008-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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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241

Sequential suppression of quarkonia and high-energy nucleus-nucleus collisions  

E-Print Network (OSTI)

According to the usual application of the sequential-suppression picture to the dynamics of heavy quarkonia in the hot medium formed in ultrarelativistic nuclear collisions, quark-antiquark pairs created in a given bound or unbound state remain in that same state as the medium evolves. We argue that this scenario implicitly assumes an adiabatic evolution of the quarkonia, and we show that the validity of the adiabaticity assumption is questionable.

Dutta, Nirupam

2012-01-01T23:59:59.000Z

242

DYNAMIC ANALYSIS OF THE BULK TRITIUM SHIPPING PACKAGE SUBJECTED TO CLOSURE TORQUES AND SEQUENTIAL IMPACTS  

SciTech Connect

This paper presents a finite-element technique to simulate the structural responses and to evaluate the cumulative damage of a radioactive material packaging requiring bolt closure-tightening torque and subjected to the scenarios of the Hypothetical Accident Conditions (HAC) defined in the Code of Federal Regulations Title 10 part 71 (10CFR71). Existing finite-element methods for modeling closure stresses from bolt pre-load are not readily adaptable to dynamic analyses. The HAC events are required to occur sequentially per 10CFR71 and thus the evaluation of the cumulative damage is desirable. Generally, each HAC event is analyzed separately and the cumulative damage is partially addressed by superposition. This results in relying on additional physical testing to comply with 10CFR71 requirements for assessment of cumulative damage. The proposed technique utilizes the combination of kinematic constraints, rigid-body motions and structural deformations to overcome some of the difficulties encountered in modeling the effect of cumulative damage. This methodology provides improved numerical solutions in compliance with the 10CFR71 requirements for sequential HAC tests. Analyses were performed for the Bulk Tritium Shipping Package (BTSP) designed by Savannah River National Laboratory to demonstrate the applications of the technique. The methodology proposed simulates the closure bolt torque preload followed by the sequential HAC events, the 30-foot drop and the 30-foot dynamic crush. The analytical results will be compared to the package test data.

Wu, T; Paul Blanton, P; Kurt Eberl, K

2007-07-09T23:59:59.000Z

243

Sequential Assimilation of ERS-1 SAR Data into a Coupled Land SurfaceHydrological Model Using an Extended Kalman Filter  

Science Conference Proceedings (OSTI)

A first attempt to sequentially assimilate European Space Agency (ESA) Remote Sensing Satellite (ERS) synthetic aperture radar (SAR) estimations of surface soil moisture in the production scheme of a lumped rainfallrunoff model has been ...

C. Francois; A. Quesney; C. Ottl

2003-04-01T23:59:59.000Z

244

Use of Sequential Injection Analysis to construct a Potentiometric Electronic Tongue: Application to the Multidetermination of Heavy Metals  

SciTech Connect

An automated potentiometric electronic tongue (ET) was developed for the quantitative determination of heavy metal mixtures. The Sequential Injection Analysis (SIA) technique was used in order to automate the obtaining of input data, and the combined response was modeled by means of Artificial Neural Networks (ANN). The sensor array was formed by four sensors: two based on chalcogenide glasses Cd sensor and Cu sensor, and the rest on poly(vinyl chloride) membranes Pb sensor and Zn sensor. The Ion Selective Electrode (ISE) sensors were first characterized with respect to one and two analytes, by means of high-dimensionality calibrations, thanks to the use of the automated flow system; this characterization enabled an interference study of great practical utility. To take profit of the dynamic nature of the sensor's response, the kinetic profile of each sensor was compacted by Fast Fourier Transform (FFT) and the extracted coefficients were used as inputs for the ANN in the multidetermination applications. In order to identify the ANN which provided the best model of the electrode responses, some of the network parameters were optimized. Finally analyses were performed employing synthetic samples and water samples of the river Ebro; obtained results were compared with reference methods.

Mimendia, Aitor; Merkoci, Arben; Valle, Manel del [Sensors and Biosensors Group, Chemistry Dept., Universitat Autonoma de Barcelona, Edifici Cn, 08193 Bellaterra, Barcelona (Spain); Legin, Andrey [Chemistry Dept, St. Petersburg University, Universitetskaya nab. 7/9, 199034 St. Petersburg (Russian Federation)

2009-05-23T23:59:59.000Z

245

Application of a Sequential Reaction Model to PANS and Aldehyde Measurements in Two Urban Areas  

SciTech Connect

Measurements of peroxycarboxylic nitric anhydrides (= PAN, PPN, MPAN) and aldehydes (acetaldehyde, propanal, and methacrolein) were made at Nashville, Tennessee, in 1999 and Houston, Texas, in 2000. The data were interpreted with a sequential reaction model that included reaction of aldehydes with hydroxl radical and formation or loss of PANs mediated by peroxyacyl radicals. The comparison of the measured ratios with those predicted by the model showed disagreement for PAN/acetaldehyde and PPN/propanal in Nashville but agreement in Houston. These features are consistent with the relative importance of isoprene to PAN formation at each site.

Roberts, James M.; Stroud, C.; Jobson, B Tom T.; Trainer, Michael; Hereid, D.; Williams, E. J.; Fehsenfeld, Fred C.; Brune, W. H.; Martinez, M.; Harder, H.

2001-12-15T23:59:59.000Z

246

Enhanced Sequential Search Methodology for Identifying Cost-Optimal Building Pathways  

SciTech Connect

The BEopt software is a building energy optimization tool that generates a cost-optimal path of building designs from a reference building up to zero-net energy. It employs a sequential search methodology to account for complex energy interactions between building efficiency measures. Enhancement strategies to this search methodology are developed to increase accuracy (ability to identify the true cost-optimal curve) and speed (number of required energy simulations). A test suite of optimizations is used to gauge the effectiveness of each strategy. Combinations of strategies are assembled into packages, ranging from conservative to aggressive, with so up to 71% fewer required simulations are required.

Horowitz, S.; Christensen, C.; Brandemuehl, M.; Krarti, M.

2008-06-01T23:59:59.000Z

247

Waste treatment process for removal of contaminants from aqueous, mixed-waste solutions using sequential chemical treatment and crossflow microfiltration, followed by dewatering  

DOE Patents (OSTI)

In processes of this invention aqueous waste solutions containing a variety of mixed waste contaminants are treated to remove the contaminants by a sequential addition of chemicals and adsorption/ion exchange powdered materials to remove the contaminants including lead, cadmium, uranium, cesium-137, strontium-85/90, trichloroethylene and benzene, and impurities including iron and calcium. Staged conditioning of the waste solution produces a polydisperse system of size enlarged complexes of the contaminants in three distinct configurations: water-soluble metal complexes, insoluble metal precipitation complexes, and contaminant-bearing particles of ion exchange and adsorbent materials. The volume of the waste is reduced by separation of the polydisperse system by cross-flow microfiltration, followed by low-temperature evaporation and/or filter pressing. The water produced as filtrate is discharged if it meets a specified target water quality, or else the filtrate is recycled until the target is achieved. 1 fig.

Vijayan, S.; Wong, C.F.; Buckley, L.P.

1994-11-22T23:59:59.000Z

248

Waste treatment process for removal of contaminants from aqueous, mixed-waste solutions using sequential chemical treatment and crossflow microfiltration, followed by dewatering  

DOE Patents (OSTI)

In processes of this invention aqueous waste solutions containing a variety of mixed waste contaminants are treated to remove the contaminants by a sequential addition of chemicals and adsorption/ion exchange powdered materials to remove the contaminants including lead, cadmium, uranium, cesium-137, strontium-85/90, trichloroethylene and benzene, and impurities including iron and calcium. Staged conditioning of the waste solution produces a polydisperse system of size enlarged complexes of the contaminants in three distinct configurations: water-soluble metal complexes, insoluble metal precipitation complexes, and contaminant-bearing particles of ion exchange and adsorbent materials. The volume of the waste is reduced by separation of the polydisperse system by cross-flow microfiltration, followed by low-temperature evaporation and/or filter pressing. The water produced as filtrate is discharged if it meets a specified target water quality, or else the filtrate is recycled until the target is achieved.

Vijayan, Sivaraman (Deep River, CA); Wong, Chi F. (Pembroke, CA); Buckley, Leo P. (Deep River, CA)

1994-01-01T23:59:59.000Z

249

Power-generation alternatives. The Hellenic power system. Volume 2. Phase 1. Feasibility study. Export trade information  

Science Conference Proceedings (OSTI)

The report constitutes the first phase (Phase I) of a feasibility study prepared for the Public Power Corporation (PPC) for a coal-based electric power generation facility. The study considers the following: Need for a future coal-fired electric power generation facility located at or near the existing Aliveri or St. George Stations; Potential to repower the existing units at both the Aliveri and St. George Stations with coal; and Various candidate combustion technologies for new generation and for repowering. The report presents findings and conclusions with respect to power demand/supply forecast, coal procurement strategy, new generation or repowering facility configuration alternatives, and the costs of each alternative. In addition, for both new generation and repowering, the use of indigenous lignite to supplement coal use is qualitatively evaluated, and the resulting possible technical and economic impacts are discussed.

Not Available

1987-06-01T23:59:59.000Z

250

STRUCTURAL ANALYSES OF FUEL CASKS SUBJECTED TO BOLT PRELOAD, INTERNAL PRESSURE AND SEQUENTIAL DYNAMIC IMPACTS  

Science Conference Proceedings (OSTI)

Large fuel casks subjected to the combined loads of closure bolt tightening, internal pressure and sequential dynamic impacts present challenges when evaluating their performance in the Hypothetical Accident Conditions (HAC) specified in the Code of Federal Regulations Title 10 Part 71 (10CFR71). Testing is often limited by cost, difficulty in preparing test units and the limited availability of facilities which can carry out such tests. In the past, many casks were evaluated without testing by using simplified analytical methods. In addition, there are no realistic analyses of closure bolt stresses for HAC conditions reported in the open literature. This paper presents a numerical technique for analyzing the accumulated damages of a large fuel cask caused by the sequential loads of the closure bolt tightening and the internal pressure as well as the drop and crash dynamic loads. The bolt preload and the internal pressure are treated as quasi-static loads so that the finite element method with explicit numerical integration scheme based on the theory of wave propagation can be applied. The dynamic impacts with short durations such as the 30-foot drop and the 40-inch puncture for the hypothetical accident conditions specified in 10CFR71 are also analyzed by using the finite-element method with explicit numerical integration scheme.

Wu, T

2009-06-25T23:59:59.000Z

251

Multimodal smart interactive presentation system  

Science Conference Proceedings (OSTI)

The authors propose a system that allows presenters to control presentations in a natural way by their body gestures and vocal commands. Thus a presentation no longer follows strictly a rigid sequential structure but can be delivered in various flexible ... Keywords: gesture recognition, natural interaction, presentation system, smart environment, speech recognition

Hoang-An Le, Khoi-Nguyen C. Mac, Truong-An Pham, Vinh-Tiep Nguyen, Minh-Triet Tran

2013-07-01T23:59:59.000Z

252

Expert system for online surveillance of nuclear reactor coolant pumps  

DOE Patents (OSTI)

An expert system for online surveillance of nuclear reactor coolant pumps. This system provides a means for early detection of pump or sensor degradation. Degradation is determined through the use of a statistical analysis technique, sequential probability ratio test, applied to information from several sensors which are responsive to differing physical parameters. The results of sequential testing of the data provide the operator with an early warning of possible sensor or pump failure.

Gross, Kenny C. (Bolingbrook, IL); Singer, Ralph M. (Naperville, IL); Humenik, Keith E. (Columbia, MD)

1993-01-01T23:59:59.000Z

253

Expert system for online surveillance of nuclear reactor coolant pumps  

DOE Patents (OSTI)

This report describes an expert system for online surveillance of nuclear reactor coolant pumps. This system provides a means for early detection of pump or sensor degradation. Degradation is determined through the use of a statistical analysis technique, sequential probability ratio test, applied to information from several sensors which are responsive to differing physical parameters. The results of sequential testing of the data provide the operator with an early warning of possible sensor or pump failure.

Gross, K.C.; Singer, R.M.; Humenik, K.E.

1992-12-31T23:59:59.000Z

254

Solar thermal small power systems study, program summary report. Phase II: study results  

DOE Green Energy (OSTI)

This Phase II Study of small solar power systems (SSPS) has been structured to determine conditions under which SSPS can be cost-effective sources of electric power in the US in the period 1985 to 2015. An extensive data base, which provides a discrete identification of all utility and industrial electric generating units up to and including 10 MW/sub e/ in rated capacity, has been prepared. This data base defines the market for which comparative evaluations are made of SSPS and alternative fossil-fueled power plants. The market penetration of SSPS is determined and the effect of economic incentives on accelerating the penetration is evaluated. The solar electric power system is evaluated as either a complete replacement for existing conventional electric power systems or as a repowering installation for boilers supplying steam to turbine-driven generators. The cost data used in the market penetration analysis are for a central receiver-type of small solar theral power system. While the market penetration discussed herein is for this type of SSPS, the sensitivity data in the report can be used to determine the market penetration of other types of solar thermal power systems (e.g., point focus distributed receiver) with different system costs.

Lapedes, D.E.; Munjal, P.K.; Sitney, L.R.

1979-07-12T23:59:59.000Z

255

Removal of polychlorinated phenols in sequential anaerobic-aerobic biofilm reactors packed with tire chips  

Science Conference Proceedings (OSTI)

Scrap vehicle tire chips were used as packing material for sequential anaerobic-aerobic biofilm reactors to remove persistent chlorinated hydrocarbons. Adsorption capacity of scrap tires was greater under acidic conditions than under basic conditions. However, it was only approximately 0.04 to 0.3% of that of activated carbon. The amount of biomass that attached to the surface of scrap tires was 3.16 and 3.72 mg volatile suspended solids/cm{sup 2} after 14 and 37 days, respectively. Two laboratory-scale, down-flow anaerobic-aerobic biofilm reactors packed with tire chips were operated to remove 2,4-dichlorophenol (DCP) and 4-chlorophenol (CP). More than 98% of DCP was dehalogenated to CP in the anaerobic reactor, 70 to 98% of which was subsequently degraded in the aerobic reactor. Scrap tires did not cause any operational problems when used as biofilter media.

Shin, H.S.; Yoo, K.S.; Park, J.K.

1999-05-01T23:59:59.000Z

256

Regeneration of strong-base anion-exchange resins by sequential chemical displacement  

DOE Patents (OSTI)

A method for regenerating strong-base anion exchange resins utilizing a sequential chemical displacement technique with new regenerant formulation. The new first regenerant solution is composed of a mixture of ferric chloride, a water-miscible organic solvent, hydrochloric acid, and water in which tetrachloroferrate anion is formed and used to displace the target anions on the resin. The second regenerant is composed of a dilute hydrochloric acid and is used to decompose tetrachloroferrate and elute ferric ions, thereby regenerating the resin. Alternative chemical displacement methods include: (1) displacement of target anions with fluoroborate followed by nitrate or salicylate and (2) displacement of target anions with salicylate followed by dilute hydrochloric acid. The methodology offers an improved regeneration efficiency, recovery, and waste minimization over the conventional displacement technique using sodium chloride (or a brine) or alkali metal hydroxide.

Brown, Gilbert M. (Knoxville, TN); Gu, Baohua (Oak Ridge, TN); Moyer, Bruce A. (Oak Ridge, TN); Bonnesen, Peter V. (Knoxville, TN)

2002-01-01T23:59:59.000Z

257

Transparent Parallel Image Processing by way of a Familiar Sequential API  

E-Print Network (OSTI)

This paper describes an infrastructure that enables transparent development of image processing software for parallel computers. The infrastructure's main component is an image processing library containing operations capable of running on distributed memory MIMD-style parallel hardware. Since the library has a programming interface identical to that of a familiar sequential image processing library, the parallelism is completely hidden from the user. All library functions are based on an abstract parallel image processing machine (APIPM), introduced in this paper. To guide the process of automatic parallelization and optimization, a performance model is defined for operations implemented using APIPM instructions. Experiments show that for realistic image operations performance predictions are highly accurate. These results suggest that the infrastructure 's core forms a powerful basis for automatic parallelization and optimization of complete applications.

Seinstra And Koelma; F. J. Seinstra; D. Koelma

2000-01-01T23:59:59.000Z

258

Welcome to the Port of Duluth-Superior Duluth-Superior  

E-Print Network (OSTI)

of capacity for a tandem pick #12;REpower Systems #12;1st Rail Move of Wind Turbine Components via Port to Chile #12;Seamless Transport Blades to Brazil #12;WIND TURBINE COMPONENT SHIPMENTS 2005 ­ 34,080 Freight ·LM Wind · Nordex · REpower · Siemens · Vestas Mountain Iron, MN Over 1 million freight tons of wind

Minnesota, University of

259

J.Org. Chem. 1984,49, 3033-3035 3033 Proposed SequentialConversion of Coal's  

E-Print Network (OSTI)

J.Org. Chem. 1984,49, 3033-3035 3033 SchemeI. @& Proposed SequentialConversion of Coal's Native moieties (func- tionalities determined to be important for lignins6and for low-rank coals'). In contrast "C, is one of condensation to make a dimeric furan! Sincein a coal systemthere will be some available

260

CRM strategies for a small-sized online shopping mall based on association rules and sequential patterns  

Science Conference Proceedings (OSTI)

As dot-com bubble burst in 2002, an uncountable number of small-sized online shopping malls have emerged every day due to many good characteristics of online marketplace, including significantly reduced search costs and menu cost for products or services ... Keywords: Association rule, CRM strategy, Data mining, RFM, Sequential pattern

Beomsoo Shim; Keunho Choi; Yongmoo Suh

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Synthesis and optimization of multiple-valued combinational and sequential reversible circuits with don't cares  

Science Conference Proceedings (OSTI)

In this paper, a synthesis method for combinational multiple-valued reversible logic (MVRL) circuits is proposed. This algorithm can use the don't care values in the synthesis process to obtain the optimal circuit with respect to quantum cost. The binary ... Keywords: Multiple-valued reversible logic, Optimization, Reversible logic, Sequential reversible logic, Synthesis

Aliakbar Niknafs; Majid Mohammadi

2013-03-01T23:59:59.000Z

262

Sequential Printing by Laser-Induced Forward Transfer To Fabricate a Polymer Light-Emitting Diode Pixel  

E-Print Network (OSTI)

Sequential Printing by Laser-Induced Forward Transfer To Fabricate a Polymer Light-Emitting Diode-1015, Lausanne, Switzerland ABSTRACT: Patterned deposition of polymer light-emitting diode (PLED Organic light-emitting diodes (OLEDs) have been investigated in detail for nearly a quarter of a century,1

263

Constructive proof of the existence of equilibrium in competitive economy with sequentially locally non-constant excess demand functions by Sperner's lemma  

E-Print Network (OSTI)

Using Sperner's lemma for modified partition of a simplex we will constructively prove the existence of equilibrium in competitive economy with sequentially locally non-constant excess demand functions. And we will show the converse result that the existence of equilibrium in competitive economy with sequentially locally non-constant excess demand functions implies Sperner's lemma. We follow the Bishop style constructive mathematics.

Tanaka, Yasuhito

2011-01-01T23:59:59.000Z

264

Best Practices for Siting Solar Photovoltaics on Municipal Solid Waste Landfills. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The Environmental Protection Agency and the National Renewable Energy Laboratory developed this best practices document to address common technical challenges for siting solar photovoltaics (PV) on municipal solid waste (MSW) landfills. The purpose of this document is to promote the use of MSW landfills for solar energy systems. Closed landfills and portions of active landfills with closed cells represent thousands of acres of property that may be suitable for siting solar photovoltaics (PV). These closed landfills may be suitable for near-term construction, making these sites strong candidate to take advantage of the 30% Federal Business Energy Investment Tax Credit. It was prepared in response to the increasing interest in siting renewable energy on landfills from solar developers; landfill owners; and federal, state, and local governments. It contains examples of solar PV projects on landfills and technical considerations and best practices that were gathered from examining the implementation of several of these projects.

Kiatreungwattana, K.; Mosey, G.; Jones-Johnson, S.; Dufficy, C.; Bourg, J.; Conroy, A.; Keenan, M.; Michaud, W.; Brown, K.

2013-04-01T23:59:59.000Z

265

Independent control of the shape and composition of ionic nanocrystals through sequential cation exchange reactions  

Science Conference Proceedings (OSTI)

Size- and shape-controlled nanocrystal growth is intensely researched for applications including electro-optic, catalytic, and medical devices. Chemical transformations such as cation exchange overcome the limitation of traditional colloidal synthesis, where the nanocrystal shape often reflects the inherent symmetry of the underlying lattice. Here we show that nanocrystals, with established synthetic protocols for high monodispersity, can be templates for independent composition control. Specifically, controlled interconversion between wurtzite CdS, chalcocite Cu2S, and rock salt PbS occurs while preserving the anisotropic dimensions unique to the as-synthesized materials. Sequential exchange reactions between the three sulfide compositions are driven by the disparate solubilites of the metal ion exchange pair in specific coordinating molecules. Starting with CdS, highly anisotropic PbS nanorods are created, which serve as an important material for studying strong 2-dimensional quantum confinement, as well as for optoelectronic applications. Furthermore, interesting nanoheterostructures of CdS|PbS are obtained by precise control over ion insertion and removal.

Luther, Joseph Matthew; Zheng, Haimei; Sadtler, Bryce; Alivisatos, A. Paul

2009-07-06T23:59:59.000Z

266

The Sequential Empirical Bayes Method: An Adaptive Constrained-Curve Fitting Algorithm for Lattice QCD  

E-Print Network (OSTI)

We introduce the ``Sequential Empirical Bayes Method'', an adaptive constrained-curve fitting procedure for extracting reliable priors. These are then used in standard augmented-$\\chi^2$ fits on separate data. This better stabilizes fits to lattice QCD overlap-fermion data at very low quark mass where {\\it a priori} values are not otherwise known. Lessons learned (including caveats limiting the scope of the method) from studying artificial data are presented. As an illustration, from local-local two-point correlation functions, we obtain masses and spectral weights for ground and first-excited states of the pion, give preliminary fits for the $a_0$ where ghost states (a quenched artifact) must be dealt with, and elaborate on the details of fits of the Roper resonance and $S_{11}(N^{1/2-})$ previously presented elsewhere. The data are from overlap fermions on a quenched $16^3\\times 28$ lattice with spatial size $La=3.2 {\\rm fm}$ and pion mass as low as $\\sim 180 {\\rm MeV}$.

Ying Chen; Shao-Jing Dong; Terrence Draper; Ivan Horvath; Keh-Fei Liu; Nilmani Mathur; Sonali Tamhankar; Cidambi Srinivasan; Frank X. Lee; Jianbo Zhang

2004-05-03T23:59:59.000Z

267

+44(0)1612756353. An Analytical Model for Sequential Investment Opportunities  

E-Print Network (OSTI)

We provide an analytical solution for American perpetual compound options, that do not rely on a bivariate or multivariate distribution function. This model is especially applicable for a real sequential investment opportunity, such as a series of drug development, tests and clinical trials, where the project can be cancelled at any time, and where the probability of failure declines over stages of completion. The effect of changing input parameter values can clearly be seen in terms of resulting overall project process volatility, and the effective mark-up factor which justifies continuing with each investment stage. In the base case, the effective markup factor increases as the stage nears completion if the project failure declines, although the absolute threshold of the project value less the remaining stage investment costs declines. This is consistent with the effect of decreases in project value volatility. Other results are not always intuitive, with different signed vegas and chis for different investment stages and degrees of moneyness. This study appears to be a unique approach, which yields the threshold project value relative to investment costs that justifies investment at each stage, with no timing restrictions. 2 1

Roger Adkins; We Thank Alcino Azevedo; Xianzhi Cao; Michael Flanagan; Afzal Siddiqui; Sigbjrn Sdal

2013-01-01T23:59:59.000Z

268

Mitofusins and OPA1 mediate sequential steps in mitochondrial membrane fusion  

E-Print Network (OSTI)

Mitochondrial fusion requires the coordinated fusion of the outer and inner membranes. Three large GTPasesOPA1 and the mitofusins Mfn1 and Mfn2are essential for the fusion of mammalian mitochondria. OPA1 is mutated in dominant optic atrophy, a neurodegenerative disease of the optic nerve. In yeast, the OPA1 ortholog Mgm1 is required for inner membrane fusion in vitro; nevertheless, yeast lacking Mgm1 show neither outer nor inner membrane fusion in vivo, because of the tight coupling between these two processes. We find that outer membrane fusion can be readily visualized in OPA1-null mouse cells in vivo, but these events do not progress to inner membrane fusion. Similar defects are found in cells lacking prohibitins, which are required for proper OPA1 processing. In contrast, double Mfn-null cells show neither outer nor inner membrane fusion. Mitochondria in OPA1-null cells often contain multiple matrix compartments bounded together by a single outer membrane, consistent with uncoupling of outer versus inner membrane fusion. In addition, unlike mitofusins and yeast Mgm1, OPA1 is not required on adjacent mitochondria to mediate membrane fusion. These results indicate that mammalian mitofusins and OPA1 mediate distinct sequential fusion steps that are readily uncoupled, in contrast to the situation in yeast.

Zhiyin Song; Mariam Ghochani; J. Michael Mccaffery; Terrence G. Frey; David C. Chan; Janet M. Shaw

2009-01-01T23:59:59.000Z

269

Method for enhancement of sequential hydraulic fracturing using control pulse fracturing  

Science Conference Proceedings (OSTI)

A method is described for creating multiple sequential hydraulic fractures via hydraulic fracturing combined with controlled pulse fracturing where two wells are utilized comprising: (a) drilling and completing a first and second well so that the wells will be in fluid communication with each other after subsequent fracturing in each well; (b) creating more than two simultaneous multiple vertical fractures via a controlled pulse fracturing method in the second well; (c) thereafter hydraulically fracturing the reservoir via the first well thereby creating fractures in the reservoir and afterwards shutting-in the first well without any induced pressure; (d) applying thereafter hydraulic pressure to the reservoir via the second well in an amount sufficient to fracture the reservoir thereby forming a first hydraulic fracture perpendicular to the least principal in-situ stress; (e) maintaining the hydraulic pressure on the reservoir while pumping via the second well alternate slugs of a thin-fluid spacer and a temporary blocking agent having a proppant therein whereupon a second hydraulic fracture is initiated; (f) maintaining the hydraulic pressure on the second well while pumping alternate slugs of spacer and blocking agent into the second hydraulic fracture thereby causing the second hydraulic fracture to propagate away from the first hydraulic fracture in step (e) in a curved trajectory which intersects a fracture created in the first well; (g) maintaining the hydraulic pressure while pumping as in step (f) whereupon another hydraulic fracture initiates causing another curved fracture trajectory to form and intersect the fracture created in the first well; and (h) repeated steps (f) and (g) until a desired number of hydraulic fractures are created which allows a substantial improvement in removing a natural resource from the reservoir.

Jennings, A.R. Jr.; Strubhar, M.K.

1993-07-20T23:59:59.000Z

270

City of Bainbridge Island - (Re)Power Bainbridge Rebate Program...  

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

efficiency upgrade areas include: *Building Insulation *Whole house air sealing *Boilers, Furnaces and hearths *Water heaters See program website for more information. This...

271

Conceptual Design Review for Biomass Repowering at Plant Barry  

Science Conference Proceedings (OSTI)

Southern Company and its subsidiary, Alabama Power, have identified Alabama Power's Plant Barry as a potential target for biomass firing. Plant Barry is located in Bucks, Alabama. Five coal-fired units were built between 1954 and 1971 for a total of 1620 MW capacity. Three natural gasfired combined-cycle combustion turbines (173 MWe each of winter capacity) and two combined-cycle steam turbines (193 MWe each of winter capacity) were installed in 2000. Unit 1 is the boiler being considered initially for ...

2010-12-20T23:59:59.000Z

272

Systems  

E-Print Network (OSTI)

Abstract Developing usable and robust mixed reality systems requires unique humancomputer interaction techniques and customized hardware systems. The design of the hardware is directed by the requirements of the rich 3D interactions that can be performed using immersive mobile MR systems. Geometry modeling and capture, navigational annotations, visualizations, and training simulations are all enhanced using augmented computer graphics. We present the design guidelines that have led us through 10 years of evolving mobile outdoor MR hardware systems.

Benjamin Avery; Ross T. Smith; Wayne Piekarski; Bruce H. Thomas

2009-01-01T23:59:59.000Z

273

Shock destruction armor system  

DOE Patents (OSTI)

A shock destruction armor system is constructed and arranged to destroy the force of impact of a projectile by shock hydrodynamics. The armor system is designed to comprise a plurality of superimposed armor plates each preferably having a thickness less than five times the projectile's diameter and are preferably separated one-from-another by a distance at least equal to one-half of the projectile's diameter. The armor plates are effective to hydrodynamically and sequentially destroy the projectile. The armor system is particularly adapted for use on various military vehicles, such as tanks, aircraft and ships.

Froeschner, Kenneth E. (Livermore, CA)

1993-01-01T23:59:59.000Z

274

Energy efficiency and carbon dioxide emissions reduction opportunities in the U.S. Iron and Steel sector  

E-Print Network (OSTI)

a steam boiler and steam turbine (back pressure turbine) toinvestment costs. Current steam turbine systems use the low-to re-power existing steam turbine systems. Gas turbine

Worrell, Ernst; Martin, N.; Price, L.

1999-01-01T23:59:59.000Z

275

Method and system for controlled combustion engines  

DOE Patents (OSTI)

A system for controlling combustion in internal combustion engines of both the Diesel or Otto type, which relies on establishing fluid dynamic conditions and structures wherein fuel and air are entrained, mixed and caused to be ignited in the interior of a multiplicity of eddies, and where these structures are caused to sequentially fill the headspace of the cylinders.

Oppenheim, A. K. (Berkeley, CA)

1990-01-01T23:59:59.000Z

276

Assessment of feasibility, economics, and market potential for a molten salt system at 1000/sup 0/F reheat steam: feasibility, economics, and market potential  

DOE Green Energy (OSTI)

As a result of the Advanced Central Receiver (ACR) Phase I systems studies, Martin-Marietta Corporation (MMC) developed a conceptual design employing 1050/sup 0/F molten salt and a 950/sup 0/F/950/sup 0/F reheat turbine. This concept appears to have the potential for providing higher steam conditions leading to higher performance and wider market application. This report presents the results of a preliminary investigation of the system to determine the feasibility of providing 1000/sup 0/F/1000/sup 0/F steam and the impact of the required design modifications on the system performance, cost, and market potential for solar repowering. Two modified designs are investigated. In one modified design, the temperature of the molten salt is the same as in the MMC baseline design (1050/sup 0/F), but the steam generators have been modified to provide 1000/sup 0/F/1000/sup 0/F steam. In the other modified design, the enhanced steam conditions are obtained using molten salt at a temperature of 1100/sup 0/F.

DeRienzo, P.; Masaki, M.; Mathur, P.

1979-10-01T23:59:59.000Z

277

NETL: Combustion Technologies  

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

Detailed Description of APFBC Repowering Detailed Description of APFBC Repowering FBC Repower Simple Description Detailed Description APFBC Specs GTs for APFBC Click on picture to enlarge Repowering Existing Power Plants with Advanced Pressurized Fluidized-Bed Combined Cycles Contents: Please send me to the NON-TECHNICAL DISCUSSION about APFBC instead! Click on the technical discussion areas below, or simply browse down in this page: APFBC Repowering Considerations Process Sketch APFBC Components High Energy Efficiency Excellent Environmental Performance Cost Comparable to a Pulverized Coal Plant APFBC Repowering Considerations Click on picture to enlarge Process Sketch While all elements of the APFBC plant have been tested, APFBC technology is still under development. Test programs are in place that will soon show commercial operations for all parts. The most important of these are the DOE Power Systems Development Facility in Wilsonville, Alabama, and two DOE Clean Coal Technology projects: Piñon Pines, testing ceramic filters, and the APFBC CCT project. DOE views the following as the development status of the various elements for application in a year 2002 repowering plant installation:

278

Concurrent and Real Time Systems: the CSP approach Steve Schneider  

E-Print Network (OSTI)

Concurrent and Real Time Systems: the CSP approach by Steve Schneider First published 1999 Systems the CSP approach Steve Schneider A Wiley-Interscience Publication JOHN WILEY & SONS, INC. New York Whitehead This book provides an introduction to Communicating Sequential Processes (CSP) and its use

Doran, Simon J.

279

A condition-based maintenance policy for intelligent monitored system  

Science Conference Proceedings (OSTI)

This study proposes a sequential Condition-Based Maintenance (CBM) policy for intelligent monitored system based on cost and reliability prioritisation. It is assumed that system's reliability could be continuously monitored, whenever ... Keywords: CBM, condition-based maintenance, cost, intelligent monitoring, maintenance policy, optimisation, predictive maintenance, reliability, simulation

Wenzhu Liao; Ershun Pan; Lifeng Xi

2009-06-01T23:59:59.000Z

280

Integrity-directed sequential state estimation: Assessing high reliability requirements via safe confidence intervals  

Science Conference Proceedings (OSTI)

This study deals with the problem of dynamic state estimation of continuous-time systems from discrete-time measurements in the context of high-integrity applications. The objective of integrity-directed estimation is to provide confidence intervals ... Keywords: Bayesian framework, Dynamic estimation, Dynamic multiple-model estimator, Fault detection, Gaussian mixture, Integrity, Kalman filter, Kullback-Leibler distance, Markov chains, Odometry, Overbounding, Rail navigation, Robust estimation, Safe navigation systems

Olivier Bilenne

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

spring/summer 2009 volume 14, number 1  

E-Print Network (OSTI)

.................................................. 8 1. Biodiesel the Energy Commission's system for tracking and verifying compliance with the RPS. Keywords biodiesel, biogas, renewable energy, Renewables Portfolio Standard, repowered, retail sales, small hydroelectric, solar

Brye, Kristofor R.

282

A sequential cooperative game theoretic approach to scheduling multiple large-scale applications in grids  

Science Conference Proceedings (OSTI)

Scheduling large-scale applications in heterogeneous distributed computing systems is a fundamental NP-complete problem that is critical to obtaining good performance and execution cost. In this paper, we address the scheduling problem of an important ... Keywords: Economic cost, Game theory, Grid computing, Performance, Scheduling, Storage

Rubing Duan, Radu Prodan, Xiaorong Li

2014-01-01T23:59:59.000Z

283

Modelling and Simulation of the Pumping in a Former Mine Using Sequential Automata; Coal Mine of Rochebelle -St-Martin de Valgalgues, Cvennes,  

E-Print Network (OSTI)

Modelling and Simulation of the Pumping in a Former Mine Using Sequential Automata; Coal Mine obtained in former coal mine of Rochebelle - St- Martin de Valgalgues located Cévennes, South of France. Key words: Modelling mining aquifer, flow of pumping, former coal mine, discrete event modelling

284

Modeling and optimizing maintenance schedule for energy systems subject to degradation  

Science Conference Proceedings (OSTI)

In recent years, with the increasing investment on distributed energy system (DES), maintenance management has played an important role in improving the system performance. This paper aims to integrate the conception of the multiple attribute value theory ... Keywords: Distributed energy system, Imperfect maintenance, Multi-attribute model, Optimal schedule, Sequential preventive maintenance

Tangbin Xia; Lifeng Xi; Xiaojun Zhou; Shichang Du

2012-11-01T23:59:59.000Z

285

Momentum distributions of sequential ionization generated by an intense laser pulse  

E-Print Network (OSTI)

The relative yield and momentum distributions of all multiply charged atomic ions generated by a short (30 fs) intense (10(14)-5 x 10(18) W/cm(2)) laser pulse are investigated using a Monte Carlo simulation. We predict a substantial shift in the maximum (centroid) of the ion-momentum distribution along the laser polarization as a function of the absolute phase. This effect should be experimentally detectable with currently available laser systems even for relatively long pulses, such as 25-30 fs. In addition to the numerical results, we present semianalytical scaling for the position of the maximum.

Shvetsov-Shilovski, N. I.; Sayler, A. M.; Rathje, T.; Paulus, Gerhard G.

2011-01-01T23:59:59.000Z

286

Effect of sequential removal of organic matter on the surface morphology of humin  

SciTech Connect

Natural organic matter in soils interacts with surfaces of inorganic materials, primarily aluminosilicates or clay minerals, to form a strongly associated organo-mineral composite known as humin. Because of humin`s insolubility, it is recognized as the primary sorbent of many anthropogenic organic compounds (AOCs) introduced into soil systems. This recognition has significant implications for understanding the fate and transport of AOCs, the effective remediation of contaminated sites, and the formulation and application of various agrochemicals. Humin was isolated from four soil samples. Surface area, surface charge, porosity measurements, and fractal analysis of small-angle X-ray scattering data were used to characterize changes in the surface properties resulting from selective removal of the various components of organic matter from humin. Organic matter was removed selectively from humin by Soxhlet extraction, disaggregation with the methylisobutylketone (MIBK) method, and bromine oxidation. The surface fractal dimensions decreased while surface area increased, and surface pore size decreased upon removal of organic matter. These results suggest that the mineral components of humin have smooth surfaces over length scales of {approximately}1 to 15 run, and that it is the organic matter coatings that are responsible for their surface roughness. The surfaces of all the components of humin were found to be dominated by micro and mesopores that could be responsible for humin`s high sorptive uptake of organic chemicals.

Malekani, K.; Rice, J.A. [South Dakota State Univ., Brookings, SD (United States)] [South Dakota State Univ., Brookings, SD (United States); Lin, Jar-Shyong [Oak Ridge National Lab., TN (United States)] [Oak Ridge National Lab., TN (United States)

1997-05-01T23:59:59.000Z

287

NETL: Combustion Technologies  

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

Nebraska Public Power District's Sheldon Station with APFBC Technology Nebraska Public Power District's Sheldon Station with APFBC Technology FBC Repower APFBC AES Greenidge APFBC Dan River FBC, APFBC Four Corners CHIPPS H.F. Lee Products Summary Sheldon Summary APFBC Sheldon GFBCC Sheldon APFBC L.V. Sutton Contents: APFBC Repowering Project Summary Key Features Site Layout Performance Environmental Characteristics Cost Other Combustion Systems Repowering Study Links: A related study is underway that would repower Sheldon Unit 1 and Unit 2 with gasification fluidized-bed combined cycle technology (GFBCC). CLICK HERE to find out more about repowering the Sheldon station with GFBCC instead. APFBC Repowering Project Summary Click on picture to enlarge Advanced circulating pressurized fluidized-bed combustion combined cycle systems (APFBC) are systems with jetting-bed pressurized fluidized-bed (PFB) carbonizer/gasifier and circulating PFBC combustor. The PFB carbonizer and PFBC both operate at elevated pressures (10 to 30 times atmospheric pressure) to provide syngas for operating a gas turbine topping combustor giving high cycle energy efficiency. The remaining char from the PFB carbonizer is burned in the pressurized PFBC. The combustion gas from the PFB also feeds thermal energy to the gas turbine topping combustor. This provides combined cycle plant efficiency on coal by providing the opportunity to generate electricity using both high efficiency gas turbines and steam.

288

Improved selenization procedure to obtain CuInSe{sub 2} thin films from sequentially electrodeposited precursors  

Science Conference Proceedings (OSTI)

A new approach for CuInSe{sub 2} formation by sequential electrodeposition of Cu and In-Se layers and subsequent heat-treatment with elemental selenium in Ar and Ar + H{sub 2} flows is presented. The nature of the precursors and their evolution as a function of the selenization parameters have been studied by X-ray diffraction and X-ray photoelectron spectroscopy analysis. Sample temperature, Se-source temperature, and H{sub 2}/Ar volume ratio in the flow were the subject for optimization. A sample temperature above 400 C is needed to obtain single-phase CuInSe{sub 2} films. An increase in the film crystallinity has been reached by maintaining the Se-source temperature above 400 C. The introduction of H{sub 2} in the selenizing atmosphere has proven to be unsuitable, H{sub 2}Se formation must be avoided because it is more poisonous and less reactive than the elemental selenium vapor.

Guillen, C.; Herrero, J. [CIEMAT, Madrid (Spain). Inst. de Energias Renovables

1996-02-01T23:59:59.000Z

289

Radiation blistering of Nb implanted sequentially with helium ions of different energies (3-500 keV)  

SciTech Connect

Cold rolled, polycrystalline niobium samples were irradiated at room temperature with $sup 4$He$sup +$ ions sequentially at 14 different energies over an energy range from 3 keV--500 keV in steps of 50 keV. The dose for each energy was chosen to give an approximately uniform concentration of helium between the implant depths corresponding to 3 keV and 500 keV. In one set of experiments the irradiations were started at the Kurchatov Institute with 3 keV $sup 4$He$sup +$ ions and extended up to 80 keV in several steps. Subsequently, the same target area was irradiated with $sup 4$He$sup +$ ions at Argonne National Laboratory (ANL) starting at 100 keV and increased to 500 keV in steps of 50 keV. Another set of irradiations were started at ANL with 500 keV $sup 4$He$sup +$ ions and continued with decreasing ion energies to 100 keV. Subsequently, the same area was irradiated at the Kurchatov Institute starting at 80 keV and continued with decreasing ion energies to 3 keV. Both sets of irradiations were completed for two different total doses, 0.5 C cm$sup -2$ and 1.0 C cm$sup -2$.

Guseva, M.I.; Gusev, V.; Krasulin, U.L.; Martinenko, U.V.; Das, S.K.; Kaminsky, M.S.

1976-01-01T23:59:59.000Z

290

Highly-selective wettability on organic light-emitting-diodes patterns by sequential low-power plasmas  

SciTech Connect

Patterned organic light-emitting-diode substrates were treated by oxygen (O{sub 2}) and tetrafluoromethane (CF{sub 4}) radio-frequency (rf, 13.56 MHz) plasmas of low-power (close to 1 W) that were capacitively-coupled. An unexpected wettability contrast (water contact angle difference up to 90 deg. ) between the indium-tin-oxide anode and the bank resist regions was achieved, providing excellent conditioning prior to the ink-jet printing. This selectivity was found to be adjustable by varying the relative exposure time to the O{sub 2} and CF{sub 4} sequential plasmas. Static contact angle measurements and extensive x-ray photoelectron spectroscopy analyses showed that the wetting properties depend on the carbon and fluorine chemical functional groups formed at the outermost surface layers, whereas atomic force microscopy images did not show a morphological change. Plasma optical emission spectroscopy and ion mass spectroscopy suggested that surface functionalization was initiated by energy transfer from ionic species (O{sup +}, O{sub 2}{sup +}, CF{sup +}, CF{sub 2}{sup +}, and CF{sub 3}{sup +}) and excited neutrals (O{sup *} and F{sup *}). The absolute ion fluxes measured on the substrates were up to 10{sup 14} cm{sup -2} s{sup -1} and the ion energies up to 20 eV, despite the low powers applied during the process.

Svarnas, P.; Edwards, A. J.; Bradley, J. W. [Department of Electrical Engineering and Electronics, Technological Plasmas Group, University of Liverpool, Merseyside L69 3GJ (United Kingdom); Yang, L.; Munz, M.; Shard, A. G. [Analytical Science Division, National Physical Laboratory (NPL), Hampton Road, Teddington, Middlesex TW11 0LW (United Kingdom)

2010-05-15T23:59:59.000Z

291

Sequencing and fan-out mechanism for causing a set of at least two sequential instructions to be performed in a dataflow processing computer  

DOE Patents (OSTI)

A sequencing and data fanout mechanism is provided for a dataflow processor is activated by an input token which causes a sequence of operations to occur by initiating a first instruction to act on data contained within the token and then executing a sequential thread of instructions identified by either a repeat count and an offset within the token, or by an offset within each preceding instruction.

Grafe, Victor G. (Corrales, NM); Hoch, James E. (Albuquerque, NM)

1993-01-01T23:59:59.000Z

292

Available Transfer Capability Calculation for AC/DC Systems with VSC-HVDC  

Science Conference Proceedings (OSTI)

In this paper, the voltage source converter is equivalently represented by voltage source model, thus the model of voltage source converter--high voltage direct current (VSC-HVDC) system suitable for optimal power flow is established. Each control mode ... Keywords: available transfer capability, voltage source converter, AC/DC systems, sequential quadratic programming method

Guoqing Li; Jian Zhang

2010-06-01T23:59:59.000Z

293

Algorithm 741: least-squares solution of a linear, bordered, block-diagonal system of equations  

Science Conference Proceedings (OSTI)

A package of Fortran subroutines is presented for the least-squares solution of a system of overdetermined, full-rank, linear equations with single-bordered block-diagonal structure. This structure allows for a natural sequential processing, one block ... Keywords: bordered block-diagonal equations, least-squares solutions, sparse systems

Richard D. Ray

1995-03-01T23:59:59.000Z

294

Thyroid V30 Predicts Radiation-Induced Hypothyroidism in Patients Treated With Sequential Chemo-Radiotherapy for Hodgkin's Lymphoma  

Science Conference Proceedings (OSTI)

Purpose: Hypothyroidism (HT) is a frequent late side effect of Hodgkin's lymphoma (HL) therapy. The purpose of this study is to determine dose-volume constraints that correlate with functional impairment of the thyroid gland in HL patients treated with three-dimensional radiotherapy. Methods and Materials: A total of 61 consecutive patients undergoing antiblastic chemotherapy and involved field radiation treatment (median dose, 32 Gy; range, 30-36 Gy) for HL were retrospectively considered. Their median age was 28 years (range, 14-70 years). Blood levels of thyroid-stimulating hormone (TSH), free triiodo-thyronine (FT3), free thyroxine (FT4), and thyroglobulin antibody (ATG) were recorded basally and at different times after the end of therapy. For the thyroid gland, normal tissue complication probability (NTCP), dosimetric parameters, and the percentage of thyroid volume exceeding 10, 20, and 30 Gy (V10, V20, and V30) were calculated in all patients. To evaluate clinical and dosimetric factors possibly associated with HT, univariate and multivariate logistic regression analyses were performed. Results: Eight of 61 (13.1%) patients had HT before treatment and were excluded from further evaluation. At a median follow-up of 32 months (range, 6-99 months), 41.5% (22/53) of patients developed HT after treatment. Univariate analyses showed that all dosimetric factors were associated with HT (p 62.5%, the risk was 70.8% (p < 0.0001). A Cox regression curve stratified by two levels of V30 value was created (odds ratio, 12.6). Conclusions: The thyroid V30 predicts the risk of developing HT after sequential chemo-radiotherapy and defines a useful constraint to consider for more accurate HL treatment planning.

Cella, Laura [Institute of Biostructures and Bioimages, National Council of Research (CNR), Naples (Italy); Department of Diagnostic Imaging and Radiation Oncology, Federico II University School of Medicine, Naples (Italy); Conson, Manuel; Caterino, Michele; De Rosa, Nicola [Department of Diagnostic Imaging and Radiation Oncology, Federico II University School of Medicine, Naples (Italy); Liuzzi, Raffaele [Institute of Biostructures and Bioimages, National Council of Research (CNR), Naples (Italy); Department of Diagnostic Imaging and Radiation Oncology, Federico II University School of Medicine, Naples (Italy); Picardi, Marco; Grimaldi, Francesco [Department of Biochemistry and Medical Biotechnology, Federico II University School of Medicine, Naples (Italy); Solla, Raffaele [Institute of Biostructures and Bioimages, National Council of Research (CNR), Naples (Italy); Department of Diagnostic Imaging and Radiation Oncology, Federico II University School of Medicine, Naples (Italy); Farella, Antonio; Salvatore, Marco [Department of Diagnostic Imaging and Radiation Oncology, Federico II University School of Medicine, Naples (Italy); Pacelli, Roberto, E-mail: roberto.pacelli@cnr.it [Institute of Biostructures and Bioimages, National Council of Research (CNR), Naples (Italy); Department of Diagnostic Imaging and Radiation Oncology, Federico II University School of Medicine, Naples (Italy)

2012-04-01T23:59:59.000Z

295

Sequential Screening and Renegotiation  

E-Print Network (OSTI)

erence to the setting with commitment is that all low buyer types obtain the same fee-price pair and all high buyer types buy for sure. There is no ?ne-tuning to speci?c buyer types. This might explain some simple real life sales agreements and why ?rms might ?nd... time. We studied two contracting scenarios, the ?rst with full commit- ment and the second without commitment. We have shown that with full commitment, 14 the contracting solution is a menu of options with dierent strike prices that distin- guishes...

Reiche, Sonje

296

Using a Simple Binomial Model to Assess Improvement in Predictive Capability: Sequential Bayesian Inference, Hypothesis Testing, and Power Analysis  

SciTech Connect

We present a Bayesian statistical methodology for identifying improvement in predictive simulations, including an analysis of the number of (presumably expensive) simulations that will need to be made in order to establish with a given level of confidence that an improvement has been observed. Our analysis assumes the ability to predict (or postdict) the same experiments with legacy and new simulation codes and uses a simple binomial model for the probability, {theta}, that, in an experiment chosen at random, the new code will provide a better prediction than the old. This model makes it possible to do statistical analysis with an absolute minimum of assumptions about the statistics of the quantities involved, at the price of discarding some potentially important information in the data. In particular, the analysis depends only on whether or not the new code predicts better than the old in any given experiment, and not on the magnitude of the improvement. We show how the posterior distribution for {theta} may be used, in a kind of Bayesian hypothesis testing, both to decide if an improvement has been observed and to quantify our confidence in that decision. We quantify the predictive probability that should be assigned, prior to taking any data, to the possibility of achieving a given level of confidence, as a function of sample size. We show how this predictive probability depends on the true value of {theta} and, in particular, how there will always be a region around {theta} = 1/2 where it is highly improbable that we will be able to identify an improvement in predictive capability, although the width of this region will shrink to zero as the sample size goes to infinity. We show how the posterior standard deviation may be used, as a kind of 'plan B metric' in the case that the analysis shows that {theta} is close to 1/2 and argue that such a plan B should generally be part of hypothesis testing. All the analysis presented in the paper is done with a general beta-function prior for {theta}, enabling sequential analysis in which a small number of new simulations may be done and the resulting posterior for {theta} used as a prior to inform the next stage of power analysis.

Sigeti, David E. [Los Alamos National Laboratory; Pelak, Robert A. [Los Alamos National Laboratory

2012-09-11T23:59:59.000Z

297

Detection of occult infection following total joint arthroplasty using sequential technetium-99m HDP bone scintigraphy and indium-111 WBC imaging  

SciTech Connect

Preoperative exclusion or confirmation of periprosthetic infection is essential for correct surgical management of patients with suspected infected joint prostheses. The sensitivity and specificity of (/sup 111/In)WBC imaging in the diagnosis of infected total joint prostheses was examined in 28 patients and compared with sequential (/sup 99m/Tc)HDP/(/sup 111/In)WBC scintigraphy and aspiration arthrography. The sensitivity of preoperative aspiration cultures was 12%, with a specificity of 81% and an accuracy of 58%. The sensitivity of (/sup 111/In)WBC imaging alone was 100%, with a specificity of 50% and an accuracy of 65%. When correlated with the bone scintigraphy and read as sequential (/sup 99m/Tc)HDP/(/sup 111/In)WBC imaging, the sensitivity was 88%, specificity 95%, and accuracy 93%. This study demonstrates that (/sup 111/In)WBC imaging is an extremely sensitive imaging modality for the detection of occult infection of joint prostheses. It also demonstrates the necessity of correlating (/sup 111/In)WBC images with (/sup 99m/Tc)HDP skeletal scintigraphy in the detection of occult periprosthetic infection.

Johnson, J.A.; Christie, M.J.; Sandler, M.P.; Parks, P.F. Jr.; Homra, L.; Kaye, J.J.

1988-08-01T23:59:59.000Z

298

Feasibility Study of Economics and Performance of Solar Photovoltaics at Massachusetts Military Reservation. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

This report presents the results of an assessment of the technical and economic feasibility of deploying photovoltaics (PV) systems on a superfund site located within the Massachusetts Military Reservation (MMR). The site was assessed for possible PV installations. The cost, performance, and site impacts of different PV options were estimated. The economics of the potential systems were analyzed using an electric rate of $0.17/kWh and incentives offered in the State of Massachusetts, such as the solar renewable energy credits. According to calculations, MMR can place 8 MW of ballast-weighted, ground-mounted PV systems on the crowns of the three landfill caps and the borrow pit with the PV modules tilted at 30 degrees.

Stafford, B.; Robichaud, R.; Mosey, G.

2011-07-01T23:59:59.000Z

299

In situ measurement system  

DOE Patents (OSTI)

A multipurpose in situ underground measurement system comprising a plurality of long electrical resistance elements in the form of rigid reinforcing bars, each having an open loop hairpin configuration of shorter length than the other resistance elements. The resistance elements are arranged in pairs in a unitized structure, and grouted in place in the underground volume. Measurement means are provided for obtaining for each pair the electrical resistance of each element and the difference in electrical resistance of the paired elements, which difference values may be used in analytical methods involving resistance as a function of temperature. A scanner means sequentially connects the resistance-measuring apparatus to each individual pair of elements. A source of heating current is also selectively connectable for heating the elements to an initial predetermined temperature prior to electrical resistance measurements when used as an anemometer.

Lord, D.E.

1980-11-24T23:59:59.000Z

300

Acoustic imaging system  

DOE Patents (OSTI)

An acoustic imaging system for displaying an object viewed by a moving array of transducers as the array is pivoted about a fixed point within a given plane. A plurality of transducers are fixedly positioned and equally spaced within a laterally extending array and operatively directed to transmit and receive acoustic signals along substantially parallel transmission paths. The transducers are sequentially activated along the array to transmit and receive acoustic signals according to a preestablished sequence. Means are provided for generating output voltages for each reception of an acoustic signal, corresponding to the coordinate position of the object viewed as the array is pivoted. Receptions from each of the transducers are presented on the same display at coordinates corresponding to the actual position of the object viewed to form a plane view of the object scanned.

Smith, Richard W. (Richland, WA)

1979-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

A Complete Compiler Approach to Auto-Parallelizing C Programs for Multi-DSP Systems  

Science Conference Proceedings (OSTI)

Auto-parallelizing compilers for embedded applications have been unsuccessful due to the widespread use of pointer arithmetic and the complex memory model of multiple-address space digital signal processors (DSPs). This paper develops, for the first ... Keywords: Parallel processors, interprocessor communications, real-time and embedded systems, signal processing systems, measurement, evaluation, modeling, simulation of multiple-processor systems, conversion from sequential to parallel forms, restructuring, reverse engineering, and reengineering, performance measures, compilers, arrays.

Bjorn Franke; Michael F. P. O'Boyle

2005-03-01T23:59:59.000Z

302

A Sequential Cooperative Game Theoretic Approach to Storage-Aware Scheduling of Multiple Large-Scale Workflow Applications in Grids  

Science Conference Proceedings (OSTI)

Scheduling large-scale applications in heterogeneous Grid and Cloud systems is a fundamental NP-complete problem for obtaining good performance and execution costs. We address the problem of scheduling an important class of large-scale Grid applications ...

Rubing Duan; Radu Prodan; Xiaorong Li

2012-09-01T23:59:59.000Z

303

IMPaCT Back study protocol. Implementation of subgrouping for targeted treatment systems for low back pain patients in primary care: a prospective population-based sequential comparison  

E-Print Network (OSTI)

cognitive-behavioural approach. Physiotherapists with additional skills drawn from cognitive-behavioural approaches, to identify and address psychological distress, and enhanced communi- cation skills including motivational interviewing techni- ques... . These analyses, based on patient measures, are unmatched and will fol- low between-group techniques i.e. unpaired t-test, chi square test and regression methods (as described below for clinical outcomes). Clinical outcomes for patients The primary outcome...

Foster, Nadine E; Mullis, Ricky; Young, Julie; Doyle, Carol; Lewis, Martyn; Whitehurst, David G; Hay, Elaine M; IMPaCT Back Study Team

2010-08-20T23:59:59.000Z

304

Isotopic Analysis of N and O in Nitrite and Nitrate by Sequential Selective Bacterial Reduction to N2O  

E-Print Network (OSTI)

composition of NO2 - is linked to those of NO3 -, N2O, NH4 +, and N2 gas, the production or consumption in natural aquatic systems is poorly understood. Isotopic data can be used to study the sources independently, reproducible 15N and 18O values were obtained at both natural-abundance levels ((0.2-0.5 for 15N

305

A Planned Neck Dissection Is Not Necessary in All Patients With N2-3 Head-and-Neck Cancer After Sequential Chemoradiotherapy  

SciTech Connect

Purpose: To assess the role of a planned neck dissection (PND) after sequential chemoradiotherapy for patients with head-and-neck cancer with N2-N3 nodal disease. Methods and Materials: We reviewed 90 patients with N2-N3 head-and-neck squamous cell carcinoma treated between 1991 and 2001 on two sequential chemoradiotherapy protocols. All patients received induction and concurrent chemotherapy with cisplatin and 5-fluorocuracil, with or without tirapazamine. Patients with less than a clinical complete response (cCR) in the neck proceeded to a PND after chemoradiation. The primary endpoint was nodal response. Clinical outcomes and patterns of failure were analyzed. Results: The median follow-up durations for living and all patients were 8.3 years (range, 1.5-16.3 year) and 5.4 years (range, 0.6-16.3 years), respectively. Of the 48 patients with nodal cCR whose necks were observed, 5 patients had neck failures as a component of their recurrence [neck and primary (n = 2); neck, primary, and distant (n = 1); neck only (n = 1); neck and distant (n = 1)]. Therefore, PND may have benefited only 2 patients (4%) [neck only failure (n = 1); neck and distant failure (n = 1)]. The pathologic complete response (pCR) rate for those with a clinical partial response (cPR) undergoing PND (n = 30) was 53%. The 5-year neck control rates after cCR, cPR{yields}pCR, and cPR{yields}pPR were 90%, 93%, and 78%, respectively (p = 0.36). The 5-year disease-free survival rates for the cCR, cPR{yields}pCR, and cPR{yields}pPR groups were 53%, 75%, and 42%, respectively (p = 0.04). Conclusion: In our series, patients with N2-N3 neck disease achieving a cCR in the neck, PND would have benefited only 4% and, therefore, is not recommended. Patients with a cPR should be treated with PND. Residual tumor in the PND specimens was associated with poor outcomes; therefore, aggressive therapy is recommended. Studies using novel imaging modalities are needed to better assess treatment response.

Soltys, Scott G., E-mail: sgsoltys@stanford.edu [Department of Radiation Oncology, Stanford University Medical Center, Stanford, CA (United States); Choi, Clara Y.H. [Department of Neurosugery, Stanford University Medical Center, Stanford, CA (United States); Fee, Willard E. [Department of Otolaryngology, Stanford University Medical Center, Stanford, CA (United States); Pinto, Harlan A. [Department of Medical Oncology, Stanford University Medical Center, Stanford, CA (United States); Veterans Affairs, Palo Alto Health Care System, Palo Alto, CA (United States); Le, Quynh-Thu [Department of Radiation Oncology, Stanford University Medical Center, Stanford, CA (United States)

2012-07-01T23:59:59.000Z

306

Application of gradient-based optimization methods for a rotor system with static stress, natural frequency,and harmonic response constraints  

Science Conference Proceedings (OSTI)

This paper demonstrates the application of gradient-based optimization methods to the minimal weight design optimization of rotor systems. A nonlinear constrained optimization problem is considered. Design variables are inner radii and wall thicknesses ... Keywords: Gradient projection method, Rotordynamics, Sequential quadratic programming, Sizing optimization, Turbine rotor

Alexander O. Pugachev

2013-06-01T23:59:59.000Z

307

Expected near-field thermal environments in a sequentially loaded spent-fuel or high-level waste repository in salt  

SciTech Connect

This report describes the effect of realistic waste emplacement schedules on repository thermal environments. Virtually all estimates to date have been based on instantaneous loading of wastes having uniform properties throughout the repository. However, more realistic scenarios involving sequential emplacement of wastes reflect the gradual filling of the repository over its lifetime. These cases provide temperatures that can be less extreme than with the simple approximation. At isolated locations in the repository, the temperatures approach the instantaneous-loading limit. However, for most of the repository, temperature rises in the near-field are 10 to 40 years behind the conservative estimates depending on the waste type and the location in the repository. Results are presented for both spent-fuel and high-level reprocessing waste repositories in salt, for a regional repository concept, and for a single national repository concept. The national repository is filled sooner and therefore more closely approximates the instantaneously loaded repository. However, temperatures in the near-field are still 20/sup 0/C or more below the values in the simple model for 40 years after startup of repository emplacement operations. The results suggest that current repository design concepts based on the instantaneous-loading predictions are very conservative. Therefore, experiments to monitor temperatures in a test and evaluation facility, for example, will need to take into account the reduced temperatures in order to provide data used in predicting repository performance.

Rickertsen, L.D.; Arbital, J.G.; Claiborne, H.C.

1982-01-01T23:59:59.000Z

308

TACOMA STEAM PLANT NO.2 REPOWERING PROJECT: A MULTIFUELED SOLID WASTE  

E-Print Network (OSTI)

), and are arranged in two sections to allow for a steam attemperator and mid point sootblowers. #12;w 00

Columbia University

309

The Applicability of Supercritical Topping Cycles for Repowering Subcritical Steam-Electric Power Plants  

Science Conference Proceedings (OSTI)

Steam cycle efficiency of existing plants is limited by the steam temperatures and pressures to which the plant has been designed. Capacity and efficiency might be increased at subcritical steam-electric plants by adding a supercritical topping cycle that exhausts at the inlet steam conditions of the existing steam turbine. Implementation of such a topping cycle will require a new steam generator that might be a low-cost solution if the existing steam generator and its associated air quality control syst...

2010-12-31T23:59:59.000Z

310

Sei Vojany Station repowering reconstruction assessment feasibility study. Volume 2. Export trade information  

Science Conference Proceedings (OSTI)

Six technologies are considered for application to the proposed Vojany Power Station EVO III. These technologies are: Conventional pulverized coal (PC) with SOx and NOx control; Atmospheric circulating fluidized bed (CFB); Atmospheric bubbling fluidized bed (BFB); Pressurized fluidized bed combustion combined cycle (PFBC-CC); Integrated coal gasification combined cycle (IGCC); and Gas fired combustion turbine combined cycle (CTCC).

Not Available

1992-01-01T23:59:59.000Z

311

PSNH's Northern Wood power project repowers coal-fired plant with new fluidized-bed combustor  

SciTech Connect

The Northern Wood Power project permanently replaced a 50-MW coal-burning boiler (Unit 5) at Public Service of New Hampshire's Schiller station with a state-of-the-art circulating fluidized bed wood-burning boiler of the same capacity. The project, completed in December 2006, reduced emissions and expanded the local market for low-grade wood. For planning and executing the multiyear, $75 million project at no cost to its ratepayers, PSNH wins Power's 2007 Marmaduke Award for excellence in O & M. The award is named for Marmaduke Surfaceblow, the fictional marine engineer/plant troubleshoot par excellence. 7 figs., 1 tab.

Peltier, R.

2007-08-15T23:59:59.000Z

312

Small power systems study technical summary report. Volume II. Inventory of small generating units in U. S. utility systems  

SciTech Connect

Data identifying small (less than or equal to 10 MW) power units in the United States are tabulated. The data are listed alphabetically by state and are reported sequentially for investor owned utilities, municipal utilities, and electrical cooperatives and other utility systems. For a given utility system, the generating units are divided into steam turbines, diesel generators and gas turbines. The number and size of generating units are listed. A summary tabulation of the number of generating units of each type and total generating capacity by state is presented.

Sitney, L.R.

1978-05-31T23:59:59.000Z

313

NEXT GENERATION GAS TURBINE (NGGT) SYSTEMS STUDY  

SciTech Connect

The ADL NGGT analysis focuses on intermediate load applications, but recognizes peaking, repowering, ancillary services, cogen, and green power requirements. In light of identifying new markets, GE will re-examine the changing customer needs since the original ADL study. The priorities of this potential customer base can be structured into key requirements for a broader cross-section of customers and applications, and a balanced view identifying the key potential customer segments will result. Given the potential for non-U.S. market segments, a broader global approach will be adopted. GEPS will translate these customer segments into customer needs, further testing the requirements listed in the original study. These customer needs will be prioritized and compared so that a balanced view of performance requirements will be identified. The performance requirements will be translated in specific design requirements for a potential AMGT-type product.

2000-10-12T23:59:59.000Z

314

Advanced Planar Solid Oxide Fuel Cell Development  

Science Conference Proceedings (OSTI)

Advanced fuel cells have many potential utility applications including new multi-megawatt central power plants, repowering existing plants, and dispersed generation. A newly designed 25 kW planar solid oxide fuel cell (SOFC) system offers simplicity of construction, low cost manufacturing, efficient recovery of by product heat, and straight-forward system integration.

1997-01-01T23:59:59.000Z

315

AUTOMATIC CALIBRATING SYSTEM FOR PRESSURE TRANSDUCERS  

DOE Patents (OSTI)

An automatic system for calibrating a number of pressure transducers is described. The disclosed embodiment of the invention uses a mercurial manometer to measure the air pressure applied to the transducer. A servo system follows the top of the mercury column as the pressure is changed and operates an analog- to-digital converter This converter furnishes electrical pulses, each representing an increment of pressure change, to a reversible counterThe transducer furnishes a signal at each calibration point, causing an electric typewriter and a card-punch machine to record the pressure at the instant as indicated by the counter. Another counter keeps track of the calibration points so that a number identifying each point is recorded with the corresponding pressure. A special relay control system controls the pressure trend and programs the sequential calibration of several transducers.

Amonette, E.L.; Rodgers, G.W.

1958-01-01T23:59:59.000Z

316

AN INEXACT SEQUENTIAL QUADRATIC OPTIMIZATION ...  

E-Print Network (OSTI)

these problems [1] and disabled the AMPL presolve feature to maintain the idiosyn- crasies of each formulation. 4.2. Numerical Results. Table 4.2 compares exit...

317

regularized sequential quadratic programming methods  

E-Print Network (OSTI)

Oct 2, 2011 ... ?Department of Mathematics, University of California, San Diego, La Jolla, ... 0511766 and DMS-0915220, and by Department of Energy grant...

318

Sequential Circuits for Relational Analysis  

Science Conference Proceedings (OSTI)

The Alloy tool-set has been gaining popularity as an alternative to traditional manual testing and checking for design correctness. Alloy uses a first-order relational logic for modeling designs. The Alloy Analyzer translates Alloy formulas for a given ...

Fadi Zaraket; Adnan Aziz; Sarfraz Khurshid

2007-05-01T23:59:59.000Z

319

NETL: Clean Coal Technology Demonstration Program (CCTDP) - Round...  

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

Wabash River Coal Gasification Repowering Project - Project Brief PDF-250KB Wabash River Coal Gasification Repowering Project Joint Venture West Terre Haute, IN Program...

320

wabash.p65  

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

WABASH RIVER COAL GASIFICATION REPOWERING PROJECT PROJECT PERFORMANCE SUMMARY CLEAN COAL TECHNOLOGY DEMONSTRATION PROGRAM JULY 2002 WABASH RIVER COAL GASIFICATION REPOWERING...

Note: This page contains sample records for the topic "repower systems sequential" 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

Reliability assessment of autonomous power systems incorporating HVDC interconnection links  

SciTech Connect

The objective of this paper is to present an improved computational method for the overall reliability assessment of autonomous power systems that may or may not contain HVdc interconnection links. This is a hybrid method based on a Monte-Carlo simulation sequential approach which incorporates an analytical approach for the reliability modeling of the HVdc transmission links. The developed models and techniques have been implemented into a computer program that can be used to simulate the operational practices and characteristics of the overall system under study efficiently and realistically. A set of reliability indices are calculated for each load-point of interest and the entire system while a set of additional indices is calculated for quantifying the reliability performance of the interconnection links under the specified operating requirements. The analysis of a practical system is also included for a number of studies representing its various operating and design characteristics.

Dialynas, E.N.; Koskolos, N.C. [National Technical Univ., Athens (Greece). Dept. of Electrical and Computer Engineering; Agoris, D. [Public Power Corp., Athens (Greece)

1996-01-01T23:59:59.000Z

322

PFBC Utility Demonstration Project. Annual report, 1991  

Science Conference Proceedings (OSTI)

This report provides a summary of activities by American Electric Power Service Corporation during the first budget period of the PFBC Utility Demonstration Project. In April 1990, AEP signed a Cooperative Agreement with the US Department of Energy to repower the Philip Sporn Plant, Units 3 & 4 in New Haven, West Virginia, with a 330 KW PFBC plant. The purpose of the program was to demonstrate and verify PFBC in a full-scale commercial plant. The technical and cost baselines of the Cooperative Agreement were based on a preliminary engineering and design and a cost estimate developed by AEP subsequent to AEP`s proposal submittal in May 1988, and prior to the signing of the Cooperative Agreement. The Statement of Work in the first budget period of the Cooperative Agreement included a task to develop a preliminary design and cost estimate for erecting a Greenfield plant and to conduct a comparison with the repowering option. The comparative assessment of the options concluded that erecting a Greenfield plant rather than repowering the existing Sporn Plant could be the technically and economically superior alternative. The Greenfield plant would have a capacity of 340 MW. The ten additional MW output is due to the ability to better match the steam cycle to the PFBC system with a new balance of plant design. In addition to this study, the conceptual design of the Sporn Repowering led to several items which warranted optimization studies with the goal to develop a more cost effective design.

Not Available

1992-11-01T23:59:59.000Z

323

PFBC Utility Demonstration Project  

Science Conference Proceedings (OSTI)

This report provides a summary of activities by American Electric Power Service Corporation during the first budget period of the PFBC Utility Demonstration Project. In April 1990, AEP signed a Cooperative Agreement with the US Department of Energy to repower the Philip Sporn Plant, Units 3 4 in New Haven, West Virginia, with a 330 KW PFBC plant. The purpose of the program was to demonstrate and verify PFBC in a full-scale commercial plant. The technical and cost baselines of the Cooperative Agreement were based on a preliminary engineering and design and a cost estimate developed by AEP subsequent to AEP's proposal submittal in May 1988, and prior to the signing of the Cooperative Agreement. The Statement of Work in the first budget period of the Cooperative Agreement included a task to develop a preliminary design and cost estimate for erecting a Greenfield plant and to conduct a comparison with the repowering option. The comparative assessment of the options concluded that erecting a Greenfield plant rather than repowering the existing Sporn Plant could be the technically and economically superior alternative. The Greenfield plant would have a capacity of 340 MW. The ten additional MW output is due to the ability to better match the steam cycle to the PFBC system with a new balance of plant design. In addition to this study, the conceptual design of the Sporn Repowering led to several items which warranted optimization studies with the goal to develop a more cost effective design.

Not Available

1992-11-01T23:59:59.000Z

324

Capacitor bank planning for possible system contingencies  

SciTech Connect

A new method for planning capacitor banks as sources of VARs for voltage maintenance during anticipated normal and contingency conditions is proposed in this work. The objective is to minimize the total investment cost in the new reactive sources. The scheduling technique is based on sequentially selecting the most severe operating state which requires the maximum reactive power, determining the optimal bus for this state using a cost-based index, and suitably modifying, if necessary, the reactive power installed to satisfy less severe operating conditions. The solution procedure employs the Compensation method (Largechange Sensitivity Technique) for network solution to update bus voltages. The discrete nature of the capacitor bank, the installation, site, and switching facility cost are all considered in the optimization process. The algorithm also minimizes the number of switchable installations. The proposed VAR scheduling method is compared with the Inverse Jacobian method for accuracy, and with other scheduling ideas for investment costs, via the IEEE 30-bus system.

Lee, T.H.; Hill, E.F.; Jong, T.L.; Obadina, O.O.; Pan, C.T.

1985-09-01T23:59:59.000Z

325

The Brookhaven National Laboratory filter pack system for collection and determination of air pollutants  

Science Conference Proceedings (OSTI)

A filter pack system for sampling trace constituents in the atmosphere from aircraft and ground-based measurement platforms has been developed. The system simultaneously and quantitatively collects atmospheric aerosol, nitric acid, and sulfur dioxide using three sequential filter stages. The quartz aerosol filter is routinely analyzed for sulfate, nitrate, ammonium, and hydrogen ions, and specifically for sulfuric acid. The sodium chloride filter is analyzed for nitrate ion (from collected nitric acid), and the carbonate-glycerine filter for sulfate ion (from collected sulfur dioxide). Details of the procedures used for filter preparation, sampling, extraction and analysis are given.

Leahy, D.F.; Klotz, P.J.; Springston, S.R.; Daum, P.H.

1995-04-01T23:59:59.000Z

326

SALT-ANL. Systems Analysis Process Simulation  

Science Conference Proceedings (OSTI)

SALT (Systems Analysis Language Translator), a systems- analysis and process-simulation program for steady-state and dynamic systems, can also be used for optimization and sensitivity studies. SALT employs state-of-the-art numerical techniques including a hybrid steepest-descent/quasi-Newtonian multidimensional nonlinear equation solver, sequential quadratic programming methods for optimization, and multistep integration methods for both stiff and nonstiff systems of differential equations. Based on a preprocessor concept where a `new` system driver can be written for each application, SALT-ANL contains precompiled component models, several flow types, and a number of thermodynamic and transport property routines, including a gas chemical-equilibrium code. It has been applied to the study of open-cycle and liquid-metal magnetohydrodynamic systems, fuel cells, ocean thermal energy conversion, municipal solid-waste processing, fusion, breeder reactors, and geothermal and solar-energy systems. Models available include: combustor, compressor, deaerator, gas-diffuser, fuel-dryer, feedwater-heater, flash-tank, gas-turbine, heater, heat-exchanger, flow-initiator, fuel-flow-initiator, molten-carbonate fuel-cell, liquid-metal diffuser, magnetohydrodynamic-generator, liquid-metal magnetohydrodynamic-generator, liquid-metal nozzle, liquid-metal pipe, flow-mixer, gas-nozzle, phosphoric acid fuel-cell, pump, pipe-calculator, steam-condenser, steam-drum, liquid-gas separator, stack, solid-oxide fuel-cell, flow-splitter, steam-turbine, two-phase diffuser, two-phase mixer, and two-phase nozzle. Input data to the SALT program describe the system configuration for the specific problem to be analyzed and provide instructions defining system constraints, objective functions, parameter sweeps, etc. to generate a PL/I program representing the system problem and performing the various analytic tasks.

Berry, G.F.; Geyer, H.K. [Argonne National Lab., IL (United States)

1992-02-26T23:59:59.000Z

327

Simulation of diurnal thermal energy storage systems: Preliminary results  

DOE Green Energy (OSTI)

This report describes the results of a simulation of thermal energy storage (TES) integrated with a simple-cycle gas turbine cogeneration system. Integrating TES with cogeneration can serve the electrical and thermal loads independently while firing all fuel in the gas turbine. The detailed engineering and economic feasibility of diurnal TES systems integrated with cogeneration systems has been described in two previous PNL reports. The objective of this study was to lay the ground work for optimization of the TES system designs using a simulation tool called TRNSYS (TRaNsient SYstem Simulation). TRNSYS is a transient simulation program with a sequential-modular structure developed at the Solar Energy Laboratory, University of Wisconsin-Madison. The two TES systems selected for the base-case simulations were: (1) a one-tank storage model to represent the oil/rock TES system, and (2) a two-tank storage model to represent the molten nitrate salt TES system. Results of the study clearly indicate that an engineering optimization of the TES system using TRNSYS is possible. The one-tank stratified oil/rock storage model described here is a good starting point for parametric studies of a TES system. Further developments to the TRNSYS library of available models (economizer, evaporator, gas turbine, etc.) are recommended so that the phase-change processes is accurately treated.

Katipamula, S.; Somasundaram, S. [Pacific Northwest Lab., Richland, WA (United States); Williams, H.R. [Univ. of Alaska, Fairbanks, AK (United States). Dept. of Mechanical Engineering

1994-12-01T23:59:59.000Z

328

Fast switching NMR system for measurements of ground-state quadrupole moments of short-lived nuclei  

E-Print Network (OSTI)

A beta-ray detecting nuclear quadrupole resonance system has been developed at NSCL/MSU to measure ground-state electric quadrupole moments of short-lived nuclei produced as fast rare isotope beams. This system enables quick and sequential application of multiple transition frequencies over a wide range. Fast switching between variable capacitors in resonance circuits ensures sufficient power delivery to the coil in the beta-ray detecting nuclear magnetic resonance technique. The fast switching technique enhances detection efficiency of resonance signals and is especially useful when the polarization and/or production rate of the nucleus of interest are small and when the nuclear spin is large.

K. Minamisono; R. R. Weerasiri; H. L. Crawford; P. F. Mantica; K. Matsuta; T. Minamisono; J. S. Pinter; J. B. Stoker

2008-02-08T23:59:59.000Z

329

Power Plant Profitability and Investment in the Central United States: Impact of New Gas Capacity on Generation and Repowering Economics  

Science Conference Proceedings (OSTI)

Over the past 12 months, announcements of capacity additions by 2005 in the midwest have jumped from 20,000 to 60,000 MW. This report examines how just a portion of this capacity, if built, could affect the profitability of new and existing power plants.

2000-12-11T23:59:59.000Z

330

REPOWERING HYDROELECTRIC UTILITY PLANTS AS AN ENVIRONMENTALLY SUSTAINABLE ALTERNATIVE TO INCREASING ENERGY SUPPLY IN BRAZIL WWF Energy Policy Study Group  

E-Print Network (OSTI)

1 In Portuguese COOESA stands for Cooperativa de Trabalho de Engenheiros, Arquitetos e Tcnicos Especializados Co-operative of Engineers, Architects and Specialists.

Jos Roberto; Campos Veiga Cooesa; Analuce Freitas; Ludmila Caminha; Michael Becker; Samuel Barreto

2003-01-01T23:59:59.000Z

331

Pridneprovsk Power Plant Dniperpetrosk, Ukraine. Combined cycle project. Export trade information  

Science Conference Proceedings (OSTI)

The report presents the results of an inspection of the Pridneprovsk Power Plant near Kiev, Ukraine made by a team of engineers to assess the feasibility of repowering the 600 MW portion of the existing 2400 MW plant. The study develops concepts and cost estimates for repowering the Pridneprovsk plant in two phases or blocks. The study develops costs for Phase I only. The report is presented in seven sections which include an Introduction, a Summary, a Facsimile of Protocol Agreement Signed by the NRG and the Ministry of Power and Electrification of Ukraine, a description of the Mechanical Systems and Equipment, a description of the Structural Systems and Equipment, a description of the Chemical Systems and Equipment, and a description of the Electrical Equipment and Systems. The report includes appendices which provide detailed information on the cost, schedules, heat balances, and piping instrument diagrams for the first block of the project.

NONE

1992-11-01T23:59:59.000Z

332

NETL: Gasification Systems - Feed Systems  

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

Feed Systems Gasification Systems Feed Systems Research on commercial gasifier feed systems is occurring in two primary areas of fuel (i.e. coal, biomass, etc.) feed and advanced...

333

Mobile integrated temporary utility system. Innovative technology summary report  

Science Conference Proceedings (OSTI)

The Mobile Integrated Temporary Utility System (MITUS) integrates portable electrical power along with communications and emergency alarm and lighting capabilities to provide safe, centralized power to work areas that need to be de-energized for decommissioning work. MITUS consists of a portable unit substation; up to twenty portable kiosks that house the power receptacles, communications, and emergency alarm and lighting systems; and a central communications unit. This system makes sequential decommissioning efforts efficient and cost-effective by allowing the integrated system to remain intact while being moved to subsequent work sites. Use of the MITUS also eliminates the need to conduct zero-energy tests and implement associated lock-out/tag-out procedures at partially de-energized facilities. Since the MITUS is a designed system, it can be customized to accommodate unique facility conditions simply by varying kiosks and transformer configurations. The MITUS is an attractive alternate to the use of portable generators with stand-alone communications and emergency system. It is more cost-effective than upgrading or reconfiguring existing power distribution systems.

NONE

1998-12-01T23:59:59.000Z

334

Optoelectronic inventory system for special nuclear material  

SciTech Connect

In support of the Department of Energy`s Dismantlement Program, the Optoelectronics Characterization and Sensor Development Department 2231 at Sandia National Laboratories/New Mexico has developed an in situ nonintrusive Optoelectronic Inventory System (OIS) that has the potential for application wherever periodic inventory of selected material is desired. Using a network of fiber-optic links, the OIS retrieves and stores inventory signatures from data storage devices (which are permanently attached to material storage containers) while inherently providing electromagnetic pulse immunity and electrical noise isolation. Photovoltaic cells (located within the storage facility) convert laser diode optic power from a laser driver to electrical energy. When powered and triggered, the data storage devices sequentially output their digital inventory signatures through light-emitting diode/photo diode data links for retrieval and storage in a mobile data acquisition system. An item`s exact location is determined through fiber-optic network and software design. The OIS provides an on-demand method for obtaining acceptable inventory reports while eliminating the need for human presence inside the material storage facility. By using modularization and prefabricated construction with mature technologies and components, an OIS installation with virtually unlimited capacity can be tailored to the customer`s requirements.

Sieradzki, F.H.

1994-01-01T23:59:59.000Z

335

System for minimizing valve throttling losses in a steam turbine power plant  

SciTech Connect

A system which integrates the controls of a steam turbine power plant for minimizing power plant energy losses substantially caused by steam flow valve throttling is disclosed. The steam turbine power plant includes boiler pressure controls for controlling the boiler throttle pressure of a steam producing boiler and turbine-generator controls for positioning a plurality of turbine steam admission values to regulate the steam flow conducted through a steam turbine which governs the electrical energy generated by an electrical generator at a desired power generation level. The turbine-generator controls predetermine a plurality of valve position states to establish a predetermined valve grouping sequential positioning pattern for the steam admission valves to regulate steam flow through the steam turbine across the range of power generation, each predetermined state substantially corresponding to a minimum of valve throttling losses. The steam admission valves may be positioned at a present valve position state, which is other than one of the predetermined states, as a result of a change in desired power generation level. The disclosed system responds to this condition by governing the boiler pressure controls to adjust the boiler throttle pressure at a desired rate and in a direction to cause steam admission valves to be repositioned according to the sequential positioning pattern to a selected one of the predetermined efficient valve position states. The repositioning of the steam admission valves is performed by maintaining the generated energy substantially at the new desired power generation level.

Stern, L.P.; Johnson, S.J.

1979-12-18T23:59:59.000Z

336

Transportation and Climate Change: The Potential for Hydrogen Systems  

DOE Green Energy (OSTI)

New technologies are being developed to serve the growing energy needs of the transportation sector without the environmental impacts observed with conventional technologies. In a world where emissions of carbon are severely constrained, hydrogen-powered vehicles (using fuel cells, internal combustion engines, or other) may be the best alternative for meeting societal needs. Programs to develop these technologies have emerged as high priorities for the automotive and energy industries, as well as governments worldwide. There are a number of challenges that must be faced, however, before we can effectively transition the current fossil fuel based system to a future hydrogen (H2) based system for the mobility industry. Full conversion of the existing transportation system will require concurrent availability of appropriate fuel sources and related infrastructure at acceptable costs and with a clear understanding of their environmental implications. This paper provides a framework for evaluating the challenges and potential pathways for the transition from our current petroleum-based energy sources for transportation systems to a future hydrogen-based system. A preliminary evaluation of the implications of moving to a hydrogen-based transportation system was conducted using the Pacific Northwest National Laboratorys (PNNL) integrated assessment model that evaluates the economic and environmental implications of various technology options. Future research activities will focus on alternative development pathways that consider infrastructure requirements and impacts as well as sequential, complementary and competitive technology development interactions.

Geffen, Charlette A.; Edmonds, James A.; Kim, Son H.

2004-03-31T23:59:59.000Z

337

A reliability assessment methodology for distribution systems with distributed generation  

E-Print Network (OSTI)

Reliability assessment is of primary importance in designing and planning distribution systems that operate in an economic manner with minimal interruption of customer loads. With the advances in renewable energy sources, Distributed Generation (DG), is forecasted to increase in distribution networks. The study of reliability evaluation of such networks is a relatively new area. This research presents a new methodology that can be used to analyze the reliability of such distribution systems and can be applied in preliminary planning studies for such systems. The method uses a sequential Monte Carlo simulation of the distribution system?s stochastic model to generate the operating behavior and combines that with a path augmenting Max flow algorithm to evaluate the load status for each state change of operation in the system. Overall system and load point reliability indices such as hourly loss of load, frequency of loss of load and expected energy unserved can be computed using this technique. On addition of DG in standby mode of operation at specific locations in the network, the reliability indices can be compared for different scenarios and strategies for placement of DG and their capacities can be determined using this methodology.

Duttagupta, Suchismita Sujaya

2003-05-01T23:59:59.000Z

338

Incipient Transient Detection in Reactor Systems: Experimental and Theoretical Investigation  

SciTech Connect

The main goal of this research was to develop a method for detecting reactor system transients at the earliest possible time through a comprehensive experimental, testing and benchmarking program. This approach holds strong promise for developing new diagnostic technologies that are non-intrusive, generic and highly portable across different systems. It will help in the design of new generation nuclear power reactors, which utilize passive safety systems with a reliable and non-intrusive multiphase flow diagnostic system to monitor the function of the passive safety systems. The main objective of this research was to develop an improved fuzzy logic based detection method based on a comprehensive experimental testing program to detect reactor transients at the earliest possible time, practically at their birth moment. A fuzzy logic and neural network based transient identification methodology and implemented in a computer code called PROTREN was considered in this research and was compared with SPRT (Sequentially Probability Ratio Testing) decision and Bayesian inference. The project involved experiment, theoretical modeling and a thermal-hydraulic code assessment. It involved graduate and undergraduate students participation providing them with exposure and training in advanced reactor concepts and safety systems. In this final report, main tasks performed during the project period are summarized and the selected results are presented. Detailed descriptions for the tasks and the results are presented in previous yearly reports (Revankar et al 2003 and Revankar et al 2004).

Lefteri H. Tsoukalas; S.T. Revankar; X Wang; R. Sattuluri

2005-09-27T23:59:59.000Z

339

A practical oracle for sequential code parallelization  

E-Print Network (OSTI)

pipeline parallelism, expressed in (a) as a DOACROSS loop. In this example, a cross-iteration dependency length

Garcia, Saturnino; Garcia, Saturnino

2012-01-01T23:59:59.000Z

340

Steered Sequential Projections for the Inconsistent Convex ...  

E-Print Network (OSTI)

Jul 18, 2004 ... Israel ({zaknoon,yair}@math.haifa.ac.il). 2Department ... Many problems in mathematics, in physical sciences and in real-world ap- plications of...

Note: This page contains sample records for the topic "repower systems sequential" 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

A Sequential Convex Semidefinite Programming Algorithm for ...  

E-Print Network (OSTI)

(kocvara@maths.bham.ac.uk). Institute of Applied ... constraints play an important role in many real-world applications (compare [9, 13]). A direct treatment of...

342

Optimal generalized truncated sequential Monte Carlo test  

Science Conference Proceedings (OSTI)

When it is not possible to obtain the analytical null distribution of a test statistic U, Monte Carlo hypothesis tests can be used to perform the test. Monte Carlo tests are commonly used in a wide variety of applications, including spatial statistics, ... Keywords: 62L05, 62L15, 65C05, Execution time, Power loss, Resampling risk, p-value density

Ivair R. Silva, Renato M. Assuno

2013-10-01T23:59:59.000Z

343

Identifying binding sites in sequential genomic data  

Science Conference Proceedings (OSTI)

The identification of cis-regulatory binding sites in DNA is a difficult problem in computational biology. To obtain a full understanding of the complex machinery embodied in genetic regulatory networks it is necessary to know both the identity of the ... Keywords: computational biology, imbalanced data, sampling, support vector machine, transcription factor binding sites

Mark Robinson; Cristina Gonzlez Castellano; Rod Adams; Neil Davey; Yi Sun

2007-09-01T23:59:59.000Z

344

A FEASIBLE TRUST-REGION SEQUENTIAL QUADRATIC ...  

E-Print Network (OSTI)

TEXAS-WISCONSIN MODELING AND CONTROL CONSORTIUM REPORT ... Chemical Engineering Department, University of Wisconsin, Madison, WI 53706, ...

345

Fronto-parietal cortex in sequential behaviour  

E-Print Network (OSTI)

et al., 2011). In an interesting study Desmurget et al. (2009) stimulated inferior parietal regions in tumour patients undergoing surgery. They found that in the context of motor action, this elicited a feeling of intention for action... ), anterior insula extending into frontal operculum (AI/FO), supplementary motor area/anterior cingulate (SMA/ACC) and intraparietal sulcus 17 (IPS). A number of other studies investigating as disparate forms or control as would manifest in visual...

Farooqui, Ausaf Ahmed

2012-10-09T23:59:59.000Z

346

Multiattribute Decision Making by Sequential Resource Allocation  

E-Print Network (OSTI)

, California (Received November 1978;accepted July 1979) A new approach is proposed for addressing decision by inspection. Our experience indicates that these resource allocation tasks are considerably simpler and more

Oren, Shmuel S.

347

Event Indexing Systems for Efficient Selection and Analysis of HERA Data  

E-Print Network (OSTI)

The design and implementation of two software systems introduced to improve the eciency of oine analysis of event data taken with the ZEUS Detector at the HERA electron-proton collider at DESY are presented. Two dierent approaches were made, one using a set of event directories and the other using a tag database based on a commercial object-oriented database management system. These are described and compared. Both systems provide quick direct access to individual collision events in a sequential data store of several terabytes, and they both considerably improve the event analysis eciency. In particular the tag database provides a very exible selection mechanism and can dramatically reduce the computing time needed to extract small subsamples from the total event sample. Gains as large as a factor 20 have been obtained. now at Fermi National Accelerator Laboratory, Batavia, USA y on leave at Stanford Linear Accelerator Laboratory, Stanford, USA z now at NIKHEF, Amsterdam, The Netherlands 1

L. A. T. Bauerdick; Adrian Fox-murphy; Tobias Haas; Stefan Stonjek; Enrico Tassi

2001-01-01T23:59:59.000Z

348

Photovoltaic system in system LABI  

Science Conference Proceedings (OSTI)

There is prepared a new model marked as DE10 to extens the system LABI. It is a photovoltaic system. Utilizing of model is into the field of university studying and as a pilot test system for all extern experts. A special parts of model are measurement ... Keywords: automation, measurement, photovoltaic system, sun energy

Hruska Frantisek

2010-07-01T23:59:59.000Z

349

Clock distribution system for digital computers  

DOE Patents (OSTI)

Apparatus for eliminating, in each clock distribution amplifier of a clock distribution system, sequential pulse catch-up error due to one pulse "overtaking" a prior clock pulse. The apparatus includes timing means to produce a periodic electromagnetic signal with a fundamental frequency having a fundamental frequency component V'.sub.01 (t); an array of N signal characteristic detector means, with detector means No. 1 receiving the timing means signal and producing a change-of-state signal V.sub.1 (t) in response to receipt of a signal above a predetermined threshold; N substantially identical filter means, one filter means being operatively associated with each detector means, for receiving the change-of-state signal V.sub.n (t) and producing a modified change-of-state signal V'.sub.n (t) (n=1, . . . , N) having a fundamental frequency component that is substantially proportional to V'.sub.01 (t-.theta..sub.n (t) with a cumulative phase shift .theta..sub.n (t) having a time derivative that may be made uniformly and arbitrarily small; and with the detector means n+1 (1.ltoreq.n

Wyman, Robert H. (Brentwood, CA); Loomis, Jr., Herschel H. (Davis, CA)

1981-01-01T23:59:59.000Z

350

Ultrasonic thickness measuring imaging system and method  

DOE Patents (OSTI)

This invention is comprised of an ultrasonic thickness measuring and imaging system in which an ultrasonic probe for measuring thickness of an object, such as a wall of tube, a computer for controlling movement of the probe in a scanning pattern within the tube and processing an analog signal produced by the probe which is proportional to the tube wall thickness in the scanning pattern and a line scan recorder for producing a record of the tube wall thicknesses measured by the probe in the scanning pattern. The probe is moved in the scanning pattern to sequentially scan circumferentially the interior tube wall at spaced apart adjacent axial locations. The computer processes the analog signal by converting it to a digital signal into a multiplicity of thickness points with each falling in one of a plurality of thickness ranges corresponding to one of plurality of shades of grey. From the multiplicity of quantified thickness points, a line scan recorder connected to the computer generates a pictorial map of tube wall thicknesses with each quantified thickness point thus being obtained from a minute area of the tube wall and representing one pixel of the pictorial map. In the pictorial map of tube wall thicknesses, the pixels represent different wall thicknesses having different shades of grey.

Bylenok, P.J.; Patmos, W.M.; Wagner, T.A.; Martin, F.H.

1990-01-01T23:59:59.000Z

351

File Systems  

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

File Systems File Systems File Systems For a general description of the different file systems available on PDSF please see Eliza File Systems and Other File Systems. Below is a summary of how STAR uses the various systems: /common The STAR software is installed on /common. For 32sl44 it is under /common/star/star44 and for sl53 it is under /common/star/star53. In both cases the software consists primarily of a STAR-specific ROOT installation on which releases of the STAR libraries are built as shown on the Local STAR Libraries page. /eliza3, /eliza6, /eliza9, /eliza14, /eliza15, /eliza17 STAR has space on 6 elizas as shown in the table below. File System star space (TB) use eliza3 39 production eliza6 9 production eliza9 39 production eliza14 34 production, user space under /eliza14/star/pwg

352

Comprehensive report to Congress Clean Coal Technology Program  

SciTech Connect

This project will demonstrate Integrated Gasification Combined Cycle (IGCC) technology in a commercial application by the repowering of an existing City Water, Light and Power (CWL P) Plant in Springfield, Illinois. The project duration will be 126 months, including a 63-month demonstration period. The estimated cost of the project is $270,700,000 of which $129,357,204 will be funded by DOE. The IGCC system will consist of CE's air-blown, entrained-flow, two-stage, pressurized coal gasifier; an advanced hot gas cleanup process; a combustion turbine modified to use low Btu coal gas; and all necessary coal handling equipment. An existing 25-MWe steam turbine and associated equipment will also be part of the IGCC system. The result of repowering will be an IGCC power plant with low environmental emissions and high net plant efficiency. The repowering will increase plant output by 40 MWe through addition of the combustion turbine, thus providing a total IGCC capacity of a nominal 65 MWe. 3 figs., 2 tabs.

Not Available

1990-10-01T23:59:59.000Z

353

System Effectiveness  

SciTech Connect

An effective risk assessment system is needed to address the threat posed by an active or passive insider who, acting alone or in collusion, could attempt diversion or theft of nuclear material. It is critical that a nuclear facility conduct a thorough self-assessment of the material protection, control, and accountability (MPC&A) system to evaluate system effectiveness. Self-assessment involves vulnerability analysis and performance testing of the MPC&A system. The process should lead to confirmation that mitigating features of the system effectively minimize the threat, or it could lead to the conclusion that system improvements or upgrades are necessary to achieve acceptable protection against the threat. Analysis of the MPC&A system is necessary to understand the limits and vulnerabilities of the system to internal threats. Self-assessment helps the facility be prepared to respond to internal threats and reduce the risk of theft or diversion of nuclear material. MSET is a self-assessment or inspection tool utilizing probabilistic risk assessment (PRA) methodology to calculate the system effectiveness of a nuclear facility's MPC&A system. MSET analyzes the effectiveness of an MPC&A system based on defined performance metrics for MPC&A functions based on U.S. and international best practices and regulations. A facility's MC&A system can be evaluated at a point in time and reevaluated after upgrades are implemented or after other system changes occur. The total system or specific subareas within the system can be evaluated. Areas of potential performance improvement or system upgrade can be assessed to determine where the most beneficial and cost-effective improvements should be made. Analyses of risk importance factors show that sustainability is essential for optimal performance. The analyses reveal where performance degradation has the greatest detrimental impact on total system risk and where performance improvements have the greatest reduction in system risk. The risk importance factors show the amount of risk reduction achievable with potential upgrades and the amount of risk reduction actually achieved after upgrades are completed. Applying the risk assessment tool gives support to budget prioritization by showing where budget support levels must be sustained for MC&A functions most important to risk. Results of the risk assessment are also useful in supporting funding justifications for system improvements that significantly reduce system risk.

Powell, Danny H [ORNL; Elwood Jr, Robert H [ORNL

2011-01-01T23:59:59.000Z

354

Gasification Systems Projects & Performers  

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

Gasification Systems Gasification Systems Projects & Performers Gasification Systems - Key Technologies Feed Systems Gasifier Optimization and Plant Supporting Systems Syngas...

355

Advanced Systems  

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

Advanced Systems: Advanced Systems: high Performance fenestration systems Research areas: Research activities to improve the performance of windows and other fenestration products must address window systems issues as well as Glazing Materials research. LBNL activities in the area of Advanced Systems include research at both the product level and the building envelope and building systems levels. Highly insulating windows - using non structural center layers Lower cost solutions to more insulating three layer glazing systems, with the potential to turn windows in U.S. heating dominated residential applications into net-energy gainers. Highly Insulating Window Frames In collaboration with the Norwegian University of Science and Technology, we are researching the potentials for highly insulating window frames. Our initial work examines European frames with reported U-factors under 0.15 Btu/hr-ft2-F. Future research aims to analyze these designs, verify these performance levels and ensure that procedures used to calculate frame performance are accurate.

356

AEP Systems  

Science Conference Proceedings (OSTI)

... Avoid costs of retrofitting systems to support secure access Produced by the Yankee Group http://www.yankeegroup.com Page 25. ...

2007-09-25T23:59:59.000Z

357

Early Dynamical Instabilities in the Giant Planet Systems  

E-Print Network (OSTI)

The observed wide eccentricity distribution of extrasolar giant planets is thought to be the result of dynamical instabilities and gravitational scattering among planets. Previously, it has been assumed that the orbits in giant planet systems become gravitationally unstable after the gas nebula dispersal. It was not well understood, however, how these unstable conditions were established in the first place. In this work we numerically simulate the evolution of systems of three planets as the planets sequentially grow to Jupiter's mass, and dynamically interact among themselves and with the gas disk. We use the hydro-dynamical code FARGO that we modified by implementing the $N$-body integrator SyMBA. The new code can handle close encounters and collisions between planets. To test their stability, the planetary systems were followed with SyMBA for up to $10^8$ yr after the gas disk dispersal. We find that dynamics of the growing planets is complex, because migration and resonances raise their orbital eccentrici...

Lega, Elena; Nesvorn, David

2013-01-01T23:59:59.000Z

358

Wind Farm Diversification and Its Impact on Power System Reliability  

E-Print Network (OSTI)

As wind exploitation gains prominence in the power industry, the extensive use of this intermittent source of power may heavily rely on our ability to select the best combination of wind farming sites that yields maximal reliability of power systems at minimal cost. This research proposes a general method to minimize the wind park global power output variance by optimally distributing a predetermined number of wind turbines over a preselected number of potential wind farming sites for which the wind patterns are statistically known. The objective is to demonstrate the benefits of diversification for the reliability of wind-sustained systems through the search for steadier overall power outputs. Three years of wind data from the recent NREL/3TIER study in the western US provides the statistics for evaluating each site for their mean power output, variance and correlation with each other so that the best allocations can be determined. Some traditional reliability indices such as the LOLP are computed by using sequential Monte Carlo simulations to emulate the behavior of a power system uniquely composed of wind turbines and a load modeled from the 1996 IEEE RTS. It is shown that configurations featuring minimal global power output variances generally prove the most reliable for moderate load cases, provided the sites are not significantly correlated with the modeled load. Under these conditions, the choice of uncorrelated/negatively correlated sites is favored. The correlations between the optimized global wind power outputs and the modeled load are studied as well.

Degeilh, Yannick

2009-08-01T23:59:59.000Z

359

NETL: Gasification Systems  

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

Gasification Systems Coal and Power Systems Gasification Systems Gasifier Optimization & Plant Supporting Systems Feed Systems Feed Systems Gasifier Optimization & Plant Supporting...

360

Power system  

DOE Patents (OSTI)

A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

Hickam, Christopher Dale (Glasford, IL)

2008-03-18T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Gasification Systems  

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

GASIFICATION SYSTEMS U.S. DEPARTMENT OF ENERGY TECHNOLOGY PROGRAM PLAN PREFACE ii DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United...

362

Photovoltaic Systems  

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

A photovoltaic (PV), or solar electric system, is made up of several photovoltaic solar cells. An individual PV cell is usually small, typically producing about 1 or 2 watts of power. To boost the...

363

Type systems  

Science Conference Proceedings (OSTI)

The study of type systems has emerged as one of the most active areas of research in programming languages, with applications in software engineering, language design, high-performance compiler implementation, and security. This chapter discusses the ...

Benjamin C. Pierce

2003-01-01T23:59:59.000Z

364

Battery system  

DOE Patents (OSTI)

A battery module includes a plurality of battery cells and a system configured for passing a fluid past at least a portion of the plurality of battery cells in a parallel manner.

Dougherty, Thomas J; Wood, Steven J; Trester, Dale B; Andrew, Michael G

2013-08-27T23:59:59.000Z

365

TNKVNT: A model of the Tank 48 purge/ventilation exhaust system. Revision 1  

DOE Green Energy (OSTI)

The waste tank purge ventilation system for Tank 48 is designed to prevent dangerous concentrations of hydrogen or benzene from accumulating in the gas space of the tank. Fans pull the gas/water vapor mixture from the tank gas space and pass it sequentially through a demister, a condenser, a reheater, and HEPA filters before discharging to the environment. Proper operation of the HEPA filters requires that the gas mixture passing through them has a low relative humidity. The ventilation system has been modified by increasing the capacity of the fans and changing the condenser from a two-pass heat exchanger to a single-pass heat exchanger. It is important to understand the impact of these modifications on the operation of the system. A hydraulic model of the ventilation exhaust system has been developed. This model predicts the properties of the air throughout the system and the flowrate through the system, as functions of the tank gas space and environmental conditions. This document serves as a Software Design Report, a Software Coding report, and a User`s Manual. All of the information required for understanding and using this code is herein contained: the governing equations are fully developed, the numerical algorithms are described in detail, and an extensively commented code listing is included. This updated version of the code models the entire purge ventilation system, and is therefore more general in its potential applications.

Shadday, M.A. Jr.

1996-04-01T23:59:59.000Z

366

Duct Leakage Impacts on VAV System Performance in Large Commercial  

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

Duct Leakage Impacts on VAV System Performance in Large Commercial Duct Leakage Impacts on VAV System Performance in Large Commercial Buildings Title Duct Leakage Impacts on VAV System Performance in Large Commercial Buildings Publication Type Report LBNL Report Number LBNL-53605 Year of Publication 2003 Authors Wray, Craig P., and Nance Matson Abstract The purpose of this study is to evaluate the variability of duct leakage impacts on air distribution system performance for typical large commercial buildings in California. Specifically, a hybrid DOE-2/TRNSYS sequential simulation approach was used to model the energy use of a low-pressure terminal-reheat variable-air-volume (VAV) HVAC system with six duct leakage configurations (tight to leaky) in nine prototypical large office buildings (representing three construction eras in three California climates where these types of buildings are common). Combined fan power for the variable-speed-controlled supply and return fans at design conditions was assumed to be 0.8 W/cfm. The VAV system that we simulated had perfectly insulated ducts, and maintained constant static pressure in the ducts upstream of the VAV boxes and a constant supply air temperature at the air-handler. Further evaluations of duct leakage impacts should be carried out in the future after methodologies are developed to deal with duct surface heat transfer effects, to deal with airflows entering VAV boxes from ceiling return plenums (e.g., to model parallel fan-powered VAV boxes), and to deal with static pressure reset and supply air temperature reset strategies.

367

Systems Studies  

DOE Green Energy (OSTI)

The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

Graham, R.L.

1998-03-17T23:59:59.000Z

368

Technology Data for Electricity and Heat Generating Plants  

E-Print Network (OSTI)

.........................................................................................................31 06 Gas Turbine Single Cycle ............................................................................................................35 07 Gas Turbine Combined Cycle................................................................................................26 04 Re-powering of Steam Turbines

369

Technology Data for Energy Plants June 2010  

E-Print Network (OSTI)

.................................................................................... 37 04 Gas Turbine Single Cycle............................................................................................................. 39 05 Gas Turbine Combined Cycle ........................................................................................ 28 02 Re-powering of Steam Turbines

370

Method and apparatus for providing pulse pile-up correction in charge quantizing radiation detection systems  

DOE Patents (OSTI)

This invention is comprised of a radiation detection method and system for continuously correcting the quantization of detected charge during pulse pile-up conditions. Charge pulses from a radiation detector responsive to the energy of detected radiation events are converted to voltage pulses of predetermined shape whose peak amplitudes are proportional to the quantity of charge of each corresponding detected event by means of a charge-sensitive preamplifier. These peak amplitudes are sampled and stored sequentially in accordance with their respective times of occurrence. Based on the stored peak amplitudes and times of occurrence, a correction factor is generated which represents the fraction of a previous pulses influence on a preceding pulse peak amplitude. This correction factor is subtracted from the following pulse amplitude in a summing amplifier whose output then represents the corrected charge quantity measurement.

Britton, C.L. Jr.; Wintenberg, A.L.

1992-12-31T23:59:59.000Z

371

X-ray tomographic image magnification process, system and apparatus therefor  

DOE Patents (OSTI)

A computerized three-dimensional x-ray tomographic microscopy system is disclosed, comprising: (a) source means for providing a source of parallel x-ray beams; (b) staging means for staging and sequentially rotating a sample to be positioned in the path of the beams; (c) x-ray image magnifier means positioned in the path of the beams downstream from the sample; (d) detecting means for detecting the beams after being passed through and magnified by the image magnifier means; and (e) computing means for analyzing values received from the detecting means, and converting the values into three-dimensional representations. Also disclosed is a process for magnifying an x-ray image, and apparatus therefor.

Kinney, J.H.; Bonse, U.K.; Johnson, Q.C.; Nichols, M.C.; Saroyan, R.A.; Massey, W.N.; NuBhardt, R.

1991-12-31T23:59:59.000Z

372

Statistically Qualified Neuro-Analytic system and Method for Process Monitoring  

DOE Patents (OSTI)

An apparatus and method for monitoring a process involves development and application of a statistically qualified neuro-analytic (SQNA) model to accurately and reliably identify process change. The development of the SQNA model is accomplished in two steps: deterministic model adaption and stochastic model adaptation. Deterministic model adaption involves formulating an analytic model of the process representing known process characteristics,augmenting the analytic model with a neural network that captures unknown process characteristics, and training the resulting neuro-analytic model by adjusting the neural network weights according to a unique scaled equation emor minimization technique. Stochastic model adaptation involves qualifying any remaining uncertainty in the trained neuro-analytic model by formulating a likelihood function, given an error propagation equation, for computing the probability that the neuro-analytic model generates measured process output. Preferably, the developed SQNA model is validated using known sequential probability ratio tests and applied to the process as an on-line monitoring system.

Vilim, Richard B.; Garcia, Humberto E.; Chen, Frederick W.

1998-11-04T23:59:59.000Z

373

Sub-Hour Solar Data for Power System Modeling From Static Spatial Variability Analysis: Preprint  

Science Conference Proceedings (OSTI)

High penetration renewable integration studies need high quality solar power data with spatial-temporal correlations that are representative of a real system. This paper will summarize the research relating sequential point-source sub-hour global horizontal irradiance (GHI) values to static, spatially distributed GHI values. This research led to the development of an algorithm for generating coherent sub-hour datasets that span distances ranging from 10 km to 4,000 km. The algorithm, in brief, generates synthetic GHI values at an interval of one-minute, for a specific location, using SUNY/Clean Power Research, satellite-derived, hourly irradiance values for the nearest grid cell to that location and grid cells within 40 km.

Hummon, M.; Ibanez, E.; Brinkman, G.; Lew, D.

2012-12-01T23:59:59.000Z

374

Statistically qualified neuro-analytic failure detection method and system  

DOE Patents (OSTI)

An apparatus and method for monitoring a process involve development and application of a statistically qualified neuro-analytic (SQNA) model to accurately and reliably identify process change. The development of the SQNA model is accomplished in two stages: deterministic model adaption and stochastic model modification of the deterministic model adaptation. Deterministic model adaption involves formulating an analytic model of the process representing known process characteristics, augmenting the analytic model with a neural network that captures unknown process characteristics, and training the resulting neuro-analytic model by adjusting the neural network weights according to a unique scaled equation error minimization technique. Stochastic model modification involves qualifying any remaining uncertainty in the trained neuro-analytic model by formulating a likelihood function, given an error propagation equation, for computing the probability that the neuro-analytic model generates measured process output. Preferably, the developed SQNA model is validated using known sequential probability ratio tests and applied to the process as an on-line monitoring system. Illustrative of the method and apparatus, the method is applied to a peristaltic pump system.

Vilim, Richard B. (Aurora, IL); Garcia, Humberto E. (Idaho Falls, ID); Chen, Frederick W. (Naperville, IL)

2002-03-02T23:59:59.000Z

375

NETL: Gasification - Systems Analyses  

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

System Analyses Gasification Systems Systems Analyses Go to the NETL Gasification Systems Program's Systems and Industry Analyses Studies Technology & CostPerformance Studies NETL...

376

Lighting Systems  

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

Purple LED lamp Purple LED lamp Lighting Systems Lighting research is aimed at improving the energy efficiency of lighting systems in buildings and homes across the nation. The goal is to reduce lighting energy consumption by 50% over twenty years by improving the efficiency of light sources, and controlling and delivering illumination so that it is available, where and when needed, and at the required intensity. Research falls into four main areas: Sources and Ballasts, Light Distribution Systems, Controls and Communications, and Human Factors. Contacts Francis Rubinstein FMRubinstein@lbl.gov (510) 486-4096 Links Lighting Research Group Batteries and Fuel Cells Buildings Energy Efficiency Applications Commercial Buildings Cool Roofs and Heat Islands Demand Response Energy Efficiency Program and Market Trends

377

Natural System  

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

Natural System Natural System Evaluation and Tool Development - FY11 Progress Report Prepared for U.S. Department of Energy Used Fuel Disposition Program Yifeng Wang (SNL) Michael Simpson (INL) Scott Painter (LANL) Hui-Hai Liu (LBNL) Annie B. Kersting (LLNL) July 15, 2011 FCRD-USED-2011-000223 UFD Natural System Evaluation - FY11 Year-End Report July 15, 2011 2 DISCLAIMER This information was prepared as an account of work sponsored by an agency of the U.S. Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, expressed 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

378

ARAC system  

SciTech Connect

In spite of the remarkable safety record of the nuclear industry as a whole, recent public concern over the potential impact of the industry's accelerated growth has prompted ERDA to expand its emergency response procedures. The Atmospheric Release Advisory Capability, ARAC, is a computer communications system designed to enhance the existing emergency response capability of ERDA nuclear facilities. ARAC will add at least two new functions to this capability: centralized, real-time data acquisition and storage, and simulation of the long range atmospheric transport of hazardous materials. To perform these functions, ARAC employs four major sub-systems or facilities: the site facility, the central facility, the global weather center and the regional model. The system has been under development for the past two years at the Lawrence Livermore Laboratory of the University of California. (auth)

Kelly, M.F.; Wyman, R.H.

1975-12-10T23:59:59.000Z

379

BAE Systems  

E-Print Network (OSTI)

Information fusion system designs require sensor and resource management (SM) for effective and efficient data collection, processing, and dissemination. Common Level 4 fusion sensor management (or process refinement) inter-relations with target tracking and identification (Level 1 fusion) have been detailed in the literature. At the ISIF Fusion Conference, a panel discussion was held to examine the contemporary issues and challenges pertaining to the interaction between SM and situation and threat assessment (Level 2/3 fusion). This summarizes the key tenants of the invited panel experts. The common themes were: 1) Addressing the user in system control, 2) Determining a standard set of metrics,

Erik Blasch; John Salerno; Ivan Kadar; Ken Hintz; J. Biermann; Chee Chong; Subrata Das

2007-01-01T23:59:59.000Z

380

Design tradeoffs in modern software transactional memory systems  

Science Conference Proceedings (OSTI)

Software Transactional Memory (STM) is a generic non-blocking synchronization construct that enables automatic conversion of correct sequential objects into correct concurrent objects. Because it is nonblocking, STM avoids traditional performance and ...

Virendra J. Marathe; William N. Scherer; Michael L. Scott

2004-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

A behavioral type system and its application in Ptolemy II  

E-Print Network (OSTI)

CCS, or concealed states in CSP. Figure 2 shows two consumerSequential Processes (CSP): As the name suggests, thisIn that model, just like CSP, the producer and consumer are

Lee, E A; Xiong, Y H

2004-01-01T23:59:59.000Z

382

Investigating Army systems and Systems of Systems for value robustness  

E-Print Network (OSTI)

This thesis proposes a value robustness approach to architect defense systems and Systems of Systems (SoS). A value robust system or SoS has the ability to provide continued value to stakeholders by performing well to meet ...

Koo, Kevin C. K. (Kevin Cheng Keong)

2010-01-01T23:59:59.000Z

383

Development of a multi-functional scarifier dislodger with an integral pneumatic conveyance retrieval system for single-shell tank remediation. FY93 summary report  

SciTech Connect

The Underground Storage Tank Integrated Demonstration (UST-ID) is evaluating several hydraulic dislodger concepts and retrieval technologies to develop specifications for system that can retrieve wastes from single-shell tanks. Each of the dislodgers will be evaluated sequentially to determine its ability to fracture and dislodge various waste simulants such as salt cake, sludge, and viscous liquid. The retrieval methods will be evaluated to determine their ability to convey this dislodged material from the tank. This report describes on-going research that commenced in FY93 to develop specifications for a scarifier dislodger coupled with a pneumatic conveyance retrieval system. The scarifier development is described in Section 3; pneumatic conveyance development is described in Section 4. Preliminary system specifications are listed in Section 5. FY94 plans are summarized in Section 6.

Bamberger, J.A.; McKinnon, M.A. [Pacific Northwest Lab., Richland, WA (United States); Alberts, D.A.; Steele, D.E. [Quest Integrated, Inc., Kent, WA (United States); Crowe, C.T. [Washington State Univ., Pullman, WA (United States)

1994-10-01T23:59:59.000Z

384

NREL: Energy Systems Integration - Energy Systems Integration...  

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

Energy Systems Integration Facility NREL's Energy Systems Integration Facility Garners LEED Platinum View the NREL Press Release. NREL's multistory Energy Systems Integration...

385

Gasification Systems  

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

GASIFICATION SYSTEMS GASIFICATION SYSTEMS U.S. DEPARTMENT OF ENERGY TECHNOLOGY PROGRAM PLAN PREFACE ii DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor 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 therein 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

386

Burner systems  

DOE Patents (OSTI)

A burner system particularly useful for downhole deployment includes a tubular combustion chamber unit housed within a tubular coolant jacket assembly. The combustion chamber unit includes a monolithic tube of refractory material whose inner surface defines the combustion zone. A metal reinforcing sleeve surrounds and extends the length of the refractory tube. The inner surface of the coolant jacket assembly and outer surface of the combustion chamber unit are dimensioned so that those surfaces are close to one another in standby condition so that the combustion chamber unit has limited freedom to expand with that expansion being stabilized by the coolant jacket assembly so that compression forces in the refractory tube do not exceed about one-half the safe compressive stress of the material; and the materials of the combustion chamber unit are selected to establish thermal gradient parameters across the combustion chamber unit to maintain the refractory tube in compression during combustion system start up and cool down sequences.

Doherty, Brian J. (Marblehead, MA)

1984-07-10T23:59:59.000Z

387

CONTROL SYSTEM  

DOE Patents (OSTI)

A boiling water type nuclear reactor power system having improved means of control is described. These means include provisions for either heating the coolant-moderator prior to entry into the reactor or shunting the coolantmoderator around the heating means in response to the demand from the heat engine. These provisions are in addition to means for withdrawing the control rods from the reactor. (AEC)

Shannon, R.H.; Williamson, H.E.

1962-10-30T23:59:59.000Z

388

Gasification system  

DOE Patents (OSTI)

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

1983-01-01T23:59:59.000Z

389

Gasification system  

DOE Patents (OSTI)

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

1985-01-01T23:59:59.000Z

390

Integrated System  

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

Integrated Window System Our research activities in the field of high performance windows have led us to conclude that even by using high performance insulating glass units, low conductivity frames, and warm edge spacers, there are still untapped sources for improving energy efficiency in the design and use of residential windows. While such high performance windows are a dramatic improvement over conventional units, they do not reduce conductive losses through wall framing around the window, offer guarantees against excessive wall/window infiltration nor do they adapt to the daily and seasonal potentials for night insulation and summer shading. To meet this need, we have been working on the design, development, and prototyping of Integrated Window Systems (IWS) since 1993. Integrated Window Systems are a form of panelized construction where the wall panel includes an operable or fixed window sash, recessed night insulation, integral solar shading, and is built in a factory setting in order to minimize thermal short circuits and infiltration at joints. IWSs can be built in modular lengths to facilitate their installation with conventional wood frame stick construction or other forms of panelized construction.

391

Advanced Systems  

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

Optimal gap width for double and triple glazing systems Optimal gap width for double and triple glazing systems Glazing systems in the US are commonly designed with a 1/2 " (12.7 mm) gap. The optimal gap width depends on many factors, such as gas fill (air, argon, krypton), the use of Low-e coatings, the environmental conditions (temperature difference across the window), and the calculation standard used. NFRC standard conditions are -18 C (-0.4 F) outside, and 21 C (69.8 F) inside. The calculation standard used in the US is based on the ISO 15099 standard. European standard conditions are 0 C (32 F) outside, and 20 C (68 F) inside. The calculation standard is based on the EN 673 standard. A number of common glazing configurations both with and without Low-e coatings, and with a variety of gas fills were evaluated using both the North American NFRC standard and the European EN 673 standard. All results were calculated using WINDOW 6.3 from LBNL. All IGU's (Insulated Glazing Units) have a standard height of 1 meter.

392

Braking system  

DOE Patents (OSTI)

A balanced braking system comprising a plurality of braking assemblies located about a member to be braked. Each of the braking assemblies consists of a spring biased piston of a first material fitted into a body of a different material which has a greater contraction upon cooling than the piston material. The piston is provided with a recessed head portion over which is positioned a diaphragm and forming a space therebetween to which is connected a pressurized fluid supply. The diaphragm is controlled by the fluid in the space to contact or withdraw from the member to be braked. A cooling means causes the body within which the piston is fitted to contract more than the piston, producing a tight shrink fit therebetween. The braking system is particularly applicable for selectively braking an arbor of an electron microscope which immobilizes, for example, a vertically adjustable low temperature specimen holder during observation. The system provides balanced braking forces which can be easily removed and re-established with minimal disturbance to arbor location.

Norgren, D.U.

1982-09-23T23:59:59.000Z

393

A Requirements Analysis for Parallel KDD Systems  

Science Conference Proceedings (OSTI)

The current generation of data mining tools have limited capacity and performance, since these tools tend to be sequential. This paper explores a migration path out of this bottleneck by considering an in tegrated hardware and softw are approach to parallelize ...

William Maniatty; Mohammed Javeed Zaki

2000-05-01T23:59:59.000Z

394

Power system development: Ocean Thermal Energy Conversion (OTEC). Preliminary design report: appendices, Part 2 (Final)  

DOE Green Energy (OSTI)

The objective of this project is the development of a preliminary design for a full-sized, closed cycle, ammonia power system module for the 100 MWe OTEC demonstration plant. In turn, this demonstration plant is to demonstrate, by 1984, the operation and performance of an Ocean Thermal Power Plant having sufficiently advanced heat exchanger design to project economic viability for commercial utilization in the late 1980's and beyond. Included in this power system development are the preliminary designs for a proof-of-concept pilot plant and test article heat exchangers which are scaled in such a manner as to support a logically sequential, relatively low-cost development of the full-scale power system module. The conceptual designs are presented for the demonstration plant power module, the proof-of-concept pilot plant, and for a pair of test article heat exchangers. Costs associated with the design, development, fabrication, checkout, delivery, installation, and operation are included. The accompanying design and producibilty studies on the full-scale power system module project the performance/economics for the commercial plant. This section of the report contains appendices on the electrical system, instrumentation and control, ammonia pump evaluation study, ammonia and nitrogen support subsystems, piping and support design calculations, and plant availability. (WHK)

None

1978-12-04T23:59:59.000Z

395

Ocean thermal energy conversion (OTEC) power system development. Preliminary design report, Appendices, Part 1 (Final)  

DOE Green Energy (OSTI)

The objective of this project is the development of a preliminary design for a full-sized, closed cycle, ammonia power system module for the 100 MWe OTEC demonstration plant. In turn, this demonstration plant is to demonstrate, by 1984, the operation and performance of an Ocean Thermal Power Plant having sufficiently advanced heat exchanger design to project economic viability for commercial utilization in the late 1980's and beyond. Included in this power system development are the preliminary designs for a proof-of-concept pilot plant and test article heat exchangers which are scaled in such a manner as to support a logically sequential, relatively low-cost development of the full-scale power system module. The conceptual designs are presented for the demonstration plant power module, the proof-of-concept pilot plant, and for a pair of test article heat exchangers. Costs associated with the design, development, fabrication, checkout, delivery, installation, and operation are included. The accompanying design and producibilty studies on the full-scale power system module project the performance/economics for the commercial plant. This section of the report contains appendices on the developed computer models, water system dynamic studies, miscellaneous performance analysis, materials and processes, detailed equipment lists, turbine design studies, tube cleaner design, ammonia leak detection, and heat exchanger design supporting data. (WHK)

Not Available

1978-12-04T23:59:59.000Z

396

Components of systems software for parallel systems  

Science Conference Proceedings (OSTI)

Systems software for clusters and other parallel systems affects multiple types of users. End users interact with it to submit and interact with application jobs and to avail themselves of scalable system tools. Systems administrators interact with it ...

Ewing Lusk

2005-09-01T23:59:59.000Z

397

Advanced Systems  

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

Glazing Systems Glazing Systems Using Non-Structural Center Glazing Layers Windows in the United States use aproximately 2 quads a year in heating energy, approximately one third of all building space heating energy used and the largest single end use attributed to windows. Even if all existing windows were replaced with today’s ENERGY STAR low-e products (U values < 0.35 Btu/hr-ft2-F), windows related heating would still be over 1 Quad. Because heating loads are strongly tied to conductive losses, technologies which lead to lower window U-factors are the key to reducing heating energy. A 0.1 Btu/hr-ft2-F window is targeted as a product, which will meet the requirements of zero-energy homes. Dynamic control of solar gains will further reduce heating needs by allowing winter solar heat gains to be effectively utilized while limiting cooling season gains. Significant cooling load savings can also be expected from lower U-factor windows in certain climates and from dynamic windows in all climates.

398

Quantifying uncertainty in LCA-modelling of waste management systems  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Uncertainty in LCA-modelling of waste management is significant. Black-Right-Pointing-Pointer Model, scenario and parameter uncertainties contribute. Black-Right-Pointing-Pointer Sequential procedure for quantifying uncertainty is proposed. Black-Right-Pointing-Pointer Application of procedure is illustrated by a case-study. - Abstract: Uncertainty analysis in LCA studies has been subject to major progress over the last years. In the context of waste management, various methods have been implemented but a systematic method for uncertainty analysis of waste-LCA studies is lacking. The objective of this paper is (1) to present the sources of uncertainty specifically inherent to waste-LCA studies, (2) to select and apply several methods for uncertainty analysis and (3) to develop a general framework for quantitative uncertainty assessment of LCA of waste management systems. The suggested method is a sequence of four steps combining the selected methods: (Step 1) a sensitivity analysis evaluating the sensitivities of the results with respect to the input uncertainties, (Step 2) an uncertainty propagation providing appropriate tools for representing uncertainties and calculating the overall uncertainty of the model results, (Step 3) an uncertainty contribution analysis quantifying the contribution of each parameter uncertainty to the final uncertainty and (Step 4) as a new approach, a combined sensitivity analysis providing a visualisation of the shift in the ranking of different options due to variations of selected key parameters. This tiered approach optimises the resources available to LCA practitioners by only propagating the most influential uncertainties.

Clavreul, Julie, E-mail: julc@env.dtu.dk [Department of Environmental Engineering, Technical University of Denmark, Miljoevej, Building 113, DK-2800 Kongens Lyngby (Denmark); Guyonnet, Dominique [BRGM, ENAG BRGM-School, BP 6009, 3 Avenue C. Guillemin, 45060 Orleans Cedex (France); Christensen, Thomas H. [Department of Environmental Engineering, Technical University of Denmark, Miljoevej, Building 113, DK-2800 Kongens Lyngby (Denmark)

2012-12-15T23:59:59.000Z

399

Multi-site magnetotelluric measurement system with real-time data analysis. Final technical report No. 210  

DOE Green Energy (OSTI)

A magnetotelluric measurement system has been designed to provide a more cost effective electrical method for geothermal and mineral exploration. The theoretical requirements and sensitivities of the magnetotelluric inversion process were specifically addressed in determining system performance requirements. Significantly reduced instrument noise levels provide improved data quality, and simultaneous measurement at up to six locations provides reduced cost per site. Remotely located, battery powered, instrumentation packages return data to a central controlling site through a 2560 baud wire-line or radio link. Each remote package contains preamplifiers, data conditioning filters, and a 12-bit gain ranging A-D converter for frequencies from 0.001 Hz to 8 Hz. Data frequencies above 8 Hz are processed sequentially by a heterodyne receiver to reduce bandwidth to within the limits of the 2560 baud data link. The central data collection site provides overall control for the entire system. The system operator interacts with the system through a CRT terminal, and he receives hard copy from a matrix graphics printer. Data from the remote packages may be recorded in time sequence on a magnetic tape cartridge system, or an optional Hewlett-Packard 21MX minicomputer can be used to perform real-time frequency analysis. The results of this analysis provide feedback to the operator for improved evaluation of system performance and for selection of future measurement sites.

Becker, J.D.; Bostick, F.X. Jr.; Smith, H.W.

1981-09-01T23:59:59.000Z

400

Transfer system  

DOE Patents (OSTI)

A transport system includes a traveling rail (1) which constitutes a transport route and a transport body (3) which is capable of traveling on the traveling rail in the longitudinal direction of the traveling rail. Flexible drive tubes (5) are arranged on the traveling rail in the longitudinal direction of the traveling rail. The transport body includes a traveling wheel (4) which is capable of rolling on the traveling rail and drive wheels (2) which are capable of rolling on the drive tubes upon receiving the rotational drive power generated by pressure of a pressure medium supplied to the drive tubes while depressing the drive tubes. The traveling rail includes a plurality of transport sections and the transport body is capable of receiving a rotational drive force from the drive tubes at every transport sections. If necessary, a transport route changeover switch which changes over the transport route can be provided between the transport sections.

Kurosawa, Kanji (Tokyo, JP); Koga, Bunichiro (Miyagi, JP); Ito, Hideki (Miyagi, JP); Kiriyama, Shigeru (Miyagi, JP); Higuchi, Shizuo (Kanagawa, JP)

2003-05-20T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

Battery system  

SciTech Connect

This patent describes a battery system for use with a battery powered device. It comprises a battery pack, the battery pack including; battery cells; positive and negative terminals serially coupled to the battery cells, the positive terminal being adapted to deliver output current to a load and receive input current in the direction of charging current; circuit means coupled to the positive and negative terminals and producing at an analog output terminal an analog output signal related to the state of charge of the battery cells; and display means separate from the battery pack and the battery powered device and electrically coupled to the analog output terminal for producing a display indicating the state of charge of the battery cells in accordance with the analog output signal.

Sokira, T.J.

1991-10-15T23:59:59.000Z

402

Environmental Management System  

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

Video Community, Environment Environmental Stewardship Environmental Protection Environmental Management System Environmental Management System An Environmental...

403

Systems Infrastructure (SYS 18)  

E-Print Network (OSTI)

Networked Sensing Systems Infrastructure John Hicks, Karencomponents The Systems Infrastructure team assembles, tests,

Richard Guy; John Hicks; Karen Weeks

2006-01-01T23:59:59.000Z

404

SYS 5: Systems Infrastructure  

E-Print Network (OSTI)

Networked Sensing Systems Infrastructure Kevin Chang, Johnnents The Systems Infrastructure team assembles, tests, and

2006-01-01T23:59:59.000Z

405

Microcomputer-based monitoring and control system with uranium mining application. Information circular  

SciTech Connect

The Bureau of Mines investigated a microprocessor-based real-time control and monitoring system for uranium mining applications. The system is capable of controlling and monitoring up to 768 stations within 3 km of the central processor on a common four-wire cable. It can be used in conjunction with detectors to continuously monitor and display radiation working levels at points throughout the mine. Surface alarms are sounded for critical situations such as rapid radiation buildup, loss of power to monitors or fans, and changes in air door position. Permanent records of all changes are automatically printed out with their time of occurrence. Printouts can also be obtained for shift reports or trend logs. The system can be used to remotely control fan startup and shutdown, and also can alert miners of underground conditions by blowing horns or turning on lights. Battery backup keeps the system operative for up to 4 h in case of a mine power outage. A special software feature permits automatic, time-delayed, sequential restart of fans.

Sheeran, C.T.; Franklin, J.C.

1984-01-01T23:59:59.000Z

406

NETL: Clean Coal Technology Demonstration Program (CCTDP) - Round 4  

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

Wabash River Coal Gasification Repowering Project - Project Brief [PDF-250KB] Wabash River Coal Gasification Repowering Project - Project Brief [PDF-250KB] Wabash River Coal Gasification Repowering Project Joint Venture West Terre Haute, IN Program Publications Final Reports Wabash River Coal Gasification Repowering Project, Final Technical Report [PDF-8.2MB] (Aug 2000) Annual/Quarterly Technical Reports Wabash River Coal Gasification Repowering Project, Annual Technical Progress Reports 1995 [PDF-1.7MB] (Mar 1999) 1996 [PDF-3.8MB] (Feb 2000) 1997 [PDF-4.8MB] 1998 [PDF-3.6MB] 1999 [PDF-3.4MB] (June 2000) CCT Reports: Project Performance Summaries, Post-Project Assessments, & Topical Reports Wabash River Coal Gasification Repowering Project, Project Performance Summary [PDF-2.5MB] (June 2002) Wabash River Coal Gasification Repowering Project: A DOE Assessment [PDF-295KB] (Jan 2002)

407

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Santo Domingo Pueblo in Sandoval County, New Mexico  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Pueblo of Santo Domingo in Sandoval County, New Mexico, for a renewable energy production feasibility study. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess specific areas on the Pueblo for potential installation of photovoltaic (PV) systems and to estimate the cost, performance, and site impacts of different PV options. The report also recommends financing options that could assist in the implementation of these PV systems.

Geiger, J.; Lisell, L.; Mosey, G.

2013-07-01T23:59:59.000Z

408

NREL: Energy Systems Integration - Energy Systems Integration...  

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

Energy Systems Integration Facility Newsroom The Energy Systems Integration Facility (ESIF) will be one of the only megawatt-scale test facilities in the United States that...

409

Benefit/cost comparisons of SMES in system-specific application scenarios  

DOE Green Energy (OSTI)

The inherently high storage efficiency, instantaneous dispatch capability and multi-function uses of superconducting magnetic energy storage (SMES) are attributes that give it the potential for widespread application in the electric utility industry. Opportunities appear to exist where SMES at a given location could provide multiple benefits either simultaneously or sequentially as system conditions dictate. These benefits, including diurnal storage and system stability and dynamic control enhancement, increase the application potential of SMES to a larger number of opportunities than might be justified by the value of its diurnal storage capability alone. However, the benefits an individual utility may realize from SMES applications are strongly influenced by the characteristics of the utility system, the location of the SMES unit and the timing of its installation in the system. Such benefits are typically not evaluated adequately in generic studies. This paper summarizes results of case studies performed by Pacific Northwest Laboratory (PNL) with funding provided by the Bonneville Power Administration (BPA) and the Electric Power Research Institute (EPRI). The derivation of SMES benefits and costs are described and benefit/cost (B/C) ratios are compared in system-specific scenarios of interest to BPA. Results of using the DYNASTORE production cost model show the sensitivity of B/C ratios to SMES capacity and power and to the forecast system load. Intermediate-size SMES applications which primarily provide system stability and dynamic control enhancement are reviewed. The potential for SMES to levelize the output of a wind energy complex is also assessed. Most of the cases show SMES to provide a positive net benefit with the additional, sometimes surprising indication, that B/C ratios and net present worth of intermediate-size units can exceed those of larger systems.

De Steese, J.G.; Dagle, J.E.; Kreid, D.K. [Pacific Northwest Lab., Richland, WA (United States); Haner, J.M.; Myers, W.E. [Bonneville Power Administration, Portland, OR (United States)

1992-09-01T23:59:59.000Z

410

Laser Music System.  

E-Print Network (OSTI)

?? A Laser Music System has been created, that combines a laser and light sensor system with an infrared distance sensing system that detects the (more)

Woodruff, Astra

2012-01-01T23:59:59.000Z

411

NERSC Computational Systems  

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

My NERSC Getting Started Computational Systems Edison Hopper Carver Dirac PDSF Genepool Testbeds Retired Systems Data & File Systems Network Connections Queues and Scheduling Job...

412

Minimal fusion systems.  

E-Print Network (OSTI)

??We define minimal fusion systems in a way that every non-solvable fusion system has a section which is minimal. Minimal fusion systems can also be (more)

Henke, Ellen

2010-01-01T23:59:59.000Z

413

The Rossiter-McLaughlin effect and analytic radial velocity curves for transiting extrasolar planetary systems  

E-Print Network (OSTI)

A transiting extrasolar planet sequentially blocks off the light coming from the different parts of the disk of the host star in a time dependent manner. Due to the spin of the star, this produces an asymmetric distortion in the line profiles of the stellar spectrum, leading to an apparent anomaly of the radial velocity curves, known as the Rossiter - McLaughlin effect. Here, we derive approximate but accurate analytic formulae for the anomaly of radial velocity curves taking account of the stellar limb darkening. The formulae are particularly useful in extracting information of the projected angle between the planetary orbit axis and the stellar spin axis, \\lambda, and the projected stellar spin velocity, V sin I_s. We create mock samples for the radial curves for the transiting extrasolar system HD209458, and demonstrate that constraints on the spin parameters (V sin I_s, \\lambda) may be significantly improved by combining our analytic template formulae and the precision velocity curves from high-resolution spectroscopic observations with 8-10 m class telescopes. Thus future observational exploration of transiting systems using the Rossiter - McLaughlin effect is one of the most important probes to better understanding of the origin of extrasolar planetary systems, especially the origin of their angular momentum.

Yasuhiro Ohta; Atsushi Taruya; Yasushi Suto

2004-10-21T23:59:59.000Z

414

Communication Systems Chair of Communication Systems  

E-Print Network (OSTI)

, porn sites, web services, ... :-)) #12;8 | 28 Communication Systems network insecurity Inner and intra

Schindelhauer, Christian

415

TRANSPORTATION SYSTEMS Transportation systems are the building  

E-Print Network (OSTI)

TRANSPORTATION SYSTEMS Transportation systems are the building blocks of modern society. Efficient mobility improves the quality of life. However, transportation systems by their very nature also affect quality. The transportation systems graduate pro- gram provides in-depth knowledge on the design

Wang, Yuhang

416

Complex System Classification  

E-Print Network (OSTI)

The use of terms such as Engineering Systems, System of systems and others have been coming into greater use over the past decade to denote systems of importance but with implied higher complexity than for the term ...

Magee, Christopher

2004-07-24T23:59:59.000Z

417

Systems Engineering Group  

Science Conference Proceedings (OSTI)

... advances, and deploys measurement science to address application of engineering information systems to complex cyber-physical systems. ...

2011-10-03T23:59:59.000Z

418

Networked Control Systems Group  

Science Conference Proceedings (OSTI)

... and deploys measurement science for sensor networks and control systems used in manufacturing, construction, and other cyber-physical systems ...

2012-08-30T23:59:59.000Z

419

Systems Integration Division Homepage  

Science Conference Proceedings (OSTI)

... systems integration and engineering, life cycle assessment, cyber-physical systems, productivity measurement, sustainability and energy efficiency. ...

2013-09-16T23:59:59.000Z

420

Complex Systems Program Homepage  

Science Conference Proceedings (OSTI)

... Systems Program seeks to understand the fundamental science of these ... Complex Systems Fundamentals Roldan Pozo; Measurement Science for ...

2011-12-28T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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421

NETL: Gasification Systems  

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

Brochures Gasification Systems Reference Shelf - Brochures The Gasification Technology brochures are as follows: Gasification Plant Databases (Aug 2013) Gasification Systems...

422

Sensors, Instrumentation Systems  

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

Sensors, Instrumentation Systems science-innovationassetsimagesicon-science.jpg Sensors, Instrumentation Systems National security depends on science and technology. The...

423

Public Safety Communication Systems  

Science Conference Proceedings (OSTI)

... integrate legacy communication and information systems and ... will support system analysis and troubleshooting ... create a global market for equipment ...

2012-12-13T23:59:59.000Z

424

Environmental Management Systems  

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

Environmental Management Systems Technical Assistance Tools Technical Assistance Tool: Integrating Sustainable Practices into Environmental Management Systems , November 2009...

425

A Partitioning Approach for Parallel Simulation of AC-Radial Shipboard Power Systems  

E-Print Network (OSTI)

An approach to parallelize the simulation of AC-Radial Shipboard Power Systems (SPSs) using multicore computers is presented. Time domain simulations of SPSs are notoriously slow, due principally to the number of components, and the time-variance of the component models. A common approach to reduce the simulation run-time of power systems is to formulate the electrical network equations using modified nodal analysis, use Bergeron's travelling-wave transmission line model to create subsystems, and to parallelize the simulation using a distributed computer. In this work, an SPS was formulated using loop analysis, defining the subsystems using a diakoptics-based approach, and the simulation parallelized using a multicore computer. A program was developed in C# to conduct multithreaded parallel-sequential simulations of an SPS. The program first represents an SPS as a graph, and then partitions the graph. Each graph partition represents a SPS subsystem and is computationally balanced using iterative refinement heuristics. Once balanced subsystems are obtained, each SPS subsystem's electrical network equations are formulated using loop analysis. Each SPS subsystem is solved using a unique thread, and each thread is manually assigned to a core of a multicore computer. To validate the partitioning approach, performance metrics were created to assess the speed gain and accuracy of the partitioned SPS simulations. The simulation parameters swept for the performance metrics were the number of partitions, the number of cores used, and the time step increment. The results of the performance metrics showed adequate speed gains with negligible error. An increasing simulation speed gain was observed when the number of partitions and cores were augmented, obtaining maximum speed gains of <30x when using a quadcore computer. Results show that the speed gain is more sensitive to the number partitions than is to the number of cores. While multicore computers are suitable for parallel-sequential SPS simulations, increasing the number of cores does not contribute to the gain in speed as much as does partitioning. The simulation error increased with the simulation time step but did not influence the partitioned simulation results. The number of operations caused by protective devices was used to determine whether the simulation error introduced by partitioning SPS simulations produced a inconsistent system behavior. It is shown, for the time step sizes uses, that protective devices did not operate inadvertently, which indicates that the errors did not alter RMS measurement and, hence, were non-influential.

Uriarte, Fabian Marcel

2010-05-01T23:59:59.000Z

426

Feasibility study of units 3 and 4. Batlle y Ordonez Power Station and expansion of La Tablada Power Station. Export trade information  

SciTech Connect

The study, conducted by Southern Electric International (SEI), was funded by the U.S. Trade and Development Agency on behalf of U.T.E., the Government of Uruguay's electric power company. It is an assessment of three potential projects under consideration by U.T.E. The changes resulting from these projects would add 120 to 360 megawatts capacity to the current system. The first option would involve repowering Jose Batlle y Ordonex Units 3 and 4. As an alternate to this plan, U.T.E. is considering a new combined cycle plant at a Greenfield site. The third project would increase capacity at La Tablada.

Not Available

1994-01-21T23:59:59.000Z

427

Integration of Electric Energy Storage into Power Systems with Renewable Energy Resources  

E-Print Network (OSTI)

This dissertation investigates the distribution and transmission systems reliability and economic impact of energy storage and renewable energy integration. The reliability and economy evaluation framework is presented. Novel operation strategies of energy storage and renewable energy are proposed. The method for optimizing the energy storage sizing and operation strategy in order to achieve optimal reliability and economy level is developed. The objectives of the movement towards the smart grid include making the power systems more reliable and economically efficient. The rapid development of the large scale energy storage technology makes it an excellent candidate in achieving these goals. A novel Model Predictive Control (MPC)-based operation strategy is proposed to optimally manage the charging and discharging operation of energy storage in order to minimize the energy purchasing cost for a distribution system load aggregator in power markets. Different operation strategies of energy storage have different reliability and economic impact on power systems. Simulation results illustrate the importance of the energy storage operation strategies. A hybrid operation strategy which combines the MPC-based operation strategy and the standby backup operation strategy is proposed to flexibly adjust the reliability and economic improvement brought by energy storage. A particle swarm optimization approach is developed to determine the optimal energy storage sizing and operation strategy while maximizing reliability and economic improvement. A reliability and economy assessment framework based on sequential Monte Carlo method integrated with the operation strategies is proposed. The impact on the transmission systems reliability brought by energy storage and renewable energy with the proposed operation strategies is investigated. Case studies are conducted to demonstrate the effectiveness of the proposed operation strategies, optimization approach, and the reliability and economy evaluation framework. Insights into how energy storage and renewable energy affect power system reliability and economy are obtained.

Xu, Yixing 1985-

2012-12-01T23:59:59.000Z

428

Method and system for detecting polygon boundaries of structures in images as particle tracks through fields of corners and pixel gradients  

SciTech Connect

A stochastic method and system for detecting polygon structures in images, by detecting a set of best matching corners of predetermined acuteness .alpha. of a polygon model from a set of similarity scores based on GDM features of corners, and tracking polygon boundaries as particle tracks using a sequential Monte Carlo approach. The tracking involves initializing polygon boundary tracking by selecting pairs of corners from the set of best matching corners to define a first side of a corresponding polygon boundary; tracking all intermediate sides of the polygon boundaries using a particle filter, and terminating polygon boundary tracking by determining the last side of the tracked polygon boundaries to close the polygon boundaries. The particle tracks are then blended to determine polygon matches, which may be made available, such as to a user, for ranking and inspection.

Paglieroni, David W. (Pleasanton, CA); Manay, Siddharth (Livermore, CA)

2011-12-20T23:59:59.000Z

429

System Demonstration Multilingual Weather Forecast Generation System  

E-Print Network (OSTI)

System Demonstration Multilingual Weather Forecast Generation System Tianfang Yao DongmoZhang Qian (Multilingual Weather Forecasts Assistant) system will be demonstrated. It is developed to generate the multilingual text of the weather forecasts automatically. The raw data from the weather observation can be used

430

Energy Systems Integration  

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

Systems Integration Systems Integration Ben Kroposki, PhD, PE Director, Energy Systems Integration National Renewable Energy Laboratory 2 Reducing investment risk and optimizing systems in a rapidly changing energy world * Increasing penetration of variable RE in grid * Increasing ultra high energy efficiency buildings and controllable loads * New data, information, communications and controls * Electrification of transportation and alternative fuels * Integrating energy storage (stationary and mobile) and thermal storage * Interactions between electricity/thermal/fuels/data pathways * Increasing system flexibility and intelligence Current Energy Systems Future Energy Systems Why Energy Systems Integration? 3 Energy Systems Integration Continuum Scale Appliance (Plug)

431

Systems Analysis Workshop Purpose  

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

National Renewable Energy Laboratory National Renewable Energy Laboratory DOE Hydrogen Program DOE Hydrogen Program Systems Analysis Workshop Systems Analysis Workshop Systems Integration Production Delivery Conversion Application Education Codes & Standards Safety Tech Validation Storage Systems Integration Production Delivery Conversion Application Education Codes & Standards Safety Tech Validation Storage Washington D.C. 28-29 Jul 04 Dale Gardner Systems Integration Operated for the U.S. Department of Energy by Midwest Research Institute * Battelle 2 Systems Analysis Workshop Topics * Meeting Goals * Systems Integration * Roles/Responsibilities of Analysis Participants * Systems Analysis * From this Workshop * Capability Presentations 3 Systems Analysis Workshop Meeting Goals 1) Understand the roles and activities of the DOE Technology Analyst,

432

Characterization of a CO-dependent O-demethylating enzyme system from the acetogen Clostridium thermoaceticum  

Science Conference Proceedings (OSTI)

At inducible O-demethylating enzyme system was characterized from Clostridium thermoaceticum cultivated at the expense of syringate. Glucose and methanol, but not CO, partially repressed its expression. Induced whole cells catalyzed the carbon monoxide (CO)-dependent O demethylation of methoxylated aromatic compounds with the concomitant formation of acetate. Pyruvate and, to a lesser extent, H{sub 2}-CO{sub 2} could replace CO in these reactions. KCN inhibited pyruvate-dependent activity but not the CO-dependent activity. The ATPase inhibitor N,N{prime}-dicyclohexylcarbodiimide, the protonophore carbonyl cyanide m-chlorophenylhydrazone, and methyl viologen did not appreciably inhibit O demethylation by induced cells, whereas Triton X-100 was inhibitory. The enzyme system appeared to convert syringate sequentially to 5-hyrdroxyvanillate and gallate. The proposed overall reaction stoichiometry was as follows: syringate + 2CO + 2H{sub 2}O {yields} gallate + 2 acetates. Growth-supportive methoxylated aromatic compounds were O demethylated by syringate-cultivated cells and inhibitory to syringate O demethylation.

Wu, Z.; Daniel, S.L.; Drake, H.L. (Univ. of Mississippi (USA))

1988-12-01T23:59:59.000Z

433

Sensor Configuration Selection for Discrete-Event Systems under Unreliable Observations  

SciTech Connect

Algorithms for counting the occurrences of special events in the framework of partially-observed discrete event dynamical systems (DEDS) were developed in previous work. Their performances typically become better as the sensors providing the observations become more costly or increase in number. This paper addresses the problem of finding a sensor configuration that achieves an optimal balance between cost and the performance of the special event counting algorithm, while satisfying given observability requirements and constraints. Since this problem is generally computational hard in the framework considered, a sensor optimization algorithm is developed using two greedy heuristics, one myopic and the other based on projected performances of candidate sensors. The two heuristics are sequentially executed in order to find best sensor configurations. The developed algorithm is then applied to a sensor optimization problem for a multiunit- operation system. Results show that improved sensor configurations can be found that may significantly reduce the sensor configuration cost but still yield acceptable performance for counting the occurrences of special events.

Wen-Chiao Lin; Tae-Sic Yoo; Humberto E. Garcia

2010-08-01T23:59:59.000Z

434

Theory of quantum metal to superconductor transitions in highly conducting systems  

SciTech Connect

We derive the theory of the quantum (zero temperature) superconductor to metal transition in disordered materials when the resistance of the normal metal near criticality is small compared to the quantum of resistivity. This can occur most readily in situations in which 'Anderson's theorem' does not apply. We explicitly study the transition in superconductor-metal composites, in an swave superconducting film in the presence of a magnetic field, and in a low temperature disordered d-wave superconductor. Near the point of the transition, the distribution of the superconducting order parameter is highly inhomogeneous. To describe this situation we employ a procedure which is similar to that introduced by Mott for description of the temperature dependence of the variable range hopping conduction. As the system approaches the point of the transition from the metal to the superconductor, the conductivity of the system diverges, and the Wiedemann-Franz law is violated. In the case of d-wave (or other exotic) superconductors we predict the existence of (at least) two sequential transitions as a function of increasing disorder: a d-wave to s-wave, and then an s-wave to metal transition.

Spivak, B.

2010-04-06T23:59:59.000Z

435

Learning classifier systems  

Science Conference Proceedings (OSTI)

This tutorial gives an introduction to Learning Classifier Systems focusing on the Michigan-Style type and XCS in particular. The objective is to introduce (1) where LCSs come from, (2) how LCSs generally work, (3) which different systems exist, (4) ... Keywords: adaptive systems, cognitive systems, datamining, function approximation, genetic algorithms, learning classifier systems, machine learning, regression, reinforcement learning

Martin V. Butz

2010-07-01T23:59:59.000Z

436

Evaluation of systems usability  

Science Conference Proceedings (OSTI)

Motivation -- Development of complex system interfaces can benefit, in addition to the traditional safety focused evaluation, also from a usability approach to evaluation of system performance. But as the users, the information system, and the ... Keywords: activity theory, complex systems, joint cognitive systems, usability evaluation

Paula Savioja; Leena Norros; Leena Salo

2008-01-01T23:59:59.000Z

437

Lighting system with thermal management system  

DOE Patents (OSTI)

Lighting systems having unique configurations are provided. For instance, the lighting system may include a light source, a thermal management system and driver electronics, each contained within a housing structure. The light source is configured to provide illumination visible through an opening in the housing structure. The thermal management system is configured to provide an air flow, such as a unidirectional air flow, through the housing structure in order to cool the light source. The driver electronics are configured to provide power to each of the light source and the thermal management system.

Arik, Mehmet; Weaver, Stanton; Stecher, Thomas; Seeley, Charles; Kuenzler, Glenn; Wolfe, Jr., Charles; Utturkar, Yogen; Sharma, Rajdeep; Prabhakaran, Satish; Icoz, Tunc

2013-05-07T23:59:59.000Z

438

Concentrator Photovoltaic Systems  

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

Concentrator photovoltaic (PV) systems use less solar cell material than other PV systems. PV cells are the most expensive components of a PV system, on a per-area basis. A concentrator makes use...

439

Steam System Optimization  

E-Print Network (OSTI)

Most plant steam systems are complex systems. Usually the fuel required to produce the steam represents a major expense for manufacturing facilities. By properly operating and maintaining the steam system and making minor improvements, significant savings can be realized.

Aegerter, R. A.

1998-04-01T23:59:59.000Z

440

Hybrid Systems Diagnosis  

Science Conference Proceedings (OSTI)

This paper reports on an on-going project to investigate techniques to diagnose complex dynamical systems that are modeled as hybrid systems. In particular, we examine continuous systems with embedded supervisory controllers that experience abrupt, partial ...

Sheila A. McIlraith; Gautam Biswas; Dan Clancy; Vineet Gupta

2000-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "repower systems sequential" 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

A framework for verifying service-oriented software systems using message sequence charts  

E-Print Network (OSTI)

within the Feature Driven Development (FDD) Process [PF02].FDD is a sequential, five activity process composed ofThe final activity of the FDD process, building by feature,

Morales-Perea, Ernesto Emiliano

2007-01-01T23:59:59.000Z

442

A new parallel association rule mining algorithm on distributed shared memory system  

Science Conference Proceedings (OSTI)

Frequent itemset finding is the most time consuming step in analysing large transactional databases. The use of sequential algorithms cannot give analytical ability for such very large databases especially in terms of run-time performance. Therefore, ...

Mohamed H. Marghny; Hosam E. Refaat

2012-01-01T23:59:59.000Z

443

Data & File Systems  

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

Data Management Policies NERSC File Systems HPSS Data Archive Optimizing IO performance on the Lustre file system IO Formats Sharing Data Transferring Data Unix Groups at NERSC...

444

Manufacturing Skills Certification System  

Science Conference Proceedings (OSTI)

... system to their business so that they utilize the skills certification system ... provide input to The Manufacturing Institute about aggregate skill needs of ...

2012-09-20T23:59:59.000Z

445

Sustainable Energy Systems Group  

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

Sustainable Energy Systems Group The Sustainable Energy Systems Group studies the impacts of energy generation and use, manufacturing, and other activities on the environment, the...

446

Usability for Biometric Systems  

Science Conference Proceedings (OSTI)

... to improve the usability of biometric systems, it is ... users will have with a system, including the hardware, software and instructional design of a ...

2010-10-05T23:59:59.000Z

447

Jobstream Separator System Design  

Science Conference Proceedings (OSTI)

... any unprivileged PDP-11/45 machine instruction or invoke ... are not an inherent part of the JSS system. ... Four of the six systems are }~C, SAC, NORAD ...

2013-04-15T23:59:59.000Z

448

Umbra's system representation.  

SciTech Connect

This document describes the Umbra System representation. Umbra System representation, initially developed in the spring of 2003, is implemented in Incr/Tcl using concepts borrowed from Carnegie Mellon University's Architecture Description Language (ADL) called Acme. In the spring of 2004 through January 2005, System was converted to Umbra 4, extended slightly, and adopted as the underlying software system for a variety of Umbra applications that support Complex Systems Engineering (CSE) and Complex Adaptive Systems Engineering (CASE). System is now a standard part Of Umbra 4. While Umbra 4 also includes an XML parser for System, the XML parser and Schema are not described in this document.

McDonald, Michael James

2005-07-01T23:59:59.000Z

449

Control system design method  

Science Conference Proceedings (OSTI)

A control system design method and concomitant control system comprising representing a physical apparatus to be controlled as a Hamiltonian system, determining elements of the Hamiltonian system representation which are power generators, power dissipators, and power storage devices, analyzing stability and performance of the Hamiltonian system based on the results of the determining step and determining necessary and sufficient conditions for stability of the Hamiltonian system, creating a stable control system based on the results of the analyzing step, and employing the resulting control system to control the physical apparatus.

Wilson, David G. (Tijeras, NM); Robinett, III, Rush D. (Tijeras, NM)

2012-02-21T23:59:59.000Z

450

Euclid File Systems  

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

Request Form Euclid File Systems Euclid has 3 kinds of file systems available to users: home directories, scratch directories and project directories, all provided by the NERSC...

451

Underwater Glider System Study  

E-Print Network (OSTI)

Leonard, N. E. , ONR Underwater Glider Systems Study GliderDavis. The Autonomous Underwater Glider Spray. IEEE Journalto the ONR Committee for Underwater Glider Systems Study,

2003-01-01T23:59:59.000Z

452

Training Management System  

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

Beam Time ESAF Contacts Calendars User Community Scientific Access Site AccessVisit Training Training Management System Argonne system used to track training requirements and...

453

A Robust Implementation of a Sequential Quadratic Programming ...  

E-Print Network (OSTI)

stabilized by a non-monotone line search and, in addition, by internal and .... remaining rows of the Jacobian matrix remain filled with previously computed gradients. ..... rithms, ASME Journal of Mechanics, Transmissions, and Automation in...

454

Sequential Aggregate Signatures and Multisignatures without Random Oracles  

E-Print Network (OSTI)

, in practice one could apply a collision-resistant hash function Hk : {0, 1} {0, 1} k to sign messages to a WVES opacity breaker of this sort: simulate a W signing oracle by a call to the verifiably encrypted

International Association for Cryptologic Research (IACR)

455

A Feasible Trust-Region Sequential Quadratic Programming Algorithm  

E-Print Network (OSTI)

Citation: Optimization Technical Report 02-05, August, 2002, Computer Sciences Department, University of Wisconsin. Texas-Wisconsin Modeling and Control...

456

Forward-Secure Sequential Aggregate Authentication Di Ma, Gene Tsudik  

E-Print Network (OSTI)

different settings, scenarios and applica- tions. Examples abound in all kinds of tracking and monitoring point for human interface. (Some WSNs support user-driven data queries and commands through the sink in critical settings (e.g., radiation, s

457

User Transparency: A Fully Sequential Programming Model for  

E-Print Network (OSTI)

researchers in imaging do not benefit from high performance computing on a daily basis. Essen­ tially of high performance computing and image pro­ cessing has been commonplace, and often resulted in hardware of the significant achievements in this direction, the application of high performance computing in imaging research

Seinstra, Frank J.

458

Start-up of Autotrophic Nitrogen Removal Reactors via Sequential  

E-Print Network (OSTI)

, filtration, centrifugation, etc.) (10) Analyze the liquid portion for the residual, final, equili- brium is that based on a flow-through fixed- bed type of a reactor/contactor (Fig. 4). The sorption column would in parallel. Rarely, usually because of special process requirements, a mixed contactor could also be used

Smets, Barth F.

459

Modelling sequential text with an adaptive topic model  

Science Conference Proceedings (OSTI)

Topic models are increasingly being used for text analysis tasks, often times replacing earlier semantic techniques such as latent semantic analysis. In this paper, we develop a novel adaptive topic model with the ability to adapt topics from both the ...

Lan Du; Wray Buntine; Huidong Jin

2012-07-01T23:59:59.000Z

460

2 Thin Films Prepared by Sequential Evaporation for Photovoltaic  

Science Conference Proceedings (OSTI)

The defects of Cu-Se di-vacancies are formed in Cu(In,Ga)Se2 thin films and influence to the solar cell performance. In this study, we have fabricated Cu(In...

Note: This page contains sample records for the topic "repower systems sequential" 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.