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Note: This page contains sample records for the topic "limited operational flexibility" from the National Library of EnergyBeta (NLEBeta).
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1

Flexible moldable conductive current-limiting materials  

SciTech Connect (OSTI)

A current limiting PTC device (10) has two electrodes (14) with a thin film of electric conducting polymer material (20) disposed between the electrodes, the polymer material (20) having superior flexibility and short circuit performance, where the polymer material contains short chain aliphatic diepoxide, conductive filler particles, curing agent, and, preferably, a minor amount of bisphenol A epoxy resin.

Shea, John Joseph (Pittsburgh, PA); Djordjevic, Miomir B. (Milwaukee, WI); Hanna, William Kingston (Pittsburgh, PA)

2002-01-01T23:59:59.000Z

2

Operational flexibility on complex enterprises : case studies from recent military operations  

E-Print Network [OSTI]

An emerging requirement for 21st century enterprises is operational flexibility, a requirement particularly important for the U. S. Department of Defense (DoD). To achieve flexibility, most practice and research emphasizes ...

Dickmann, John Q

2009-01-01T23:59:59.000Z

3

LIMITING ABSORPTION PRINCIPLE FOR SINGULARLY PERTURBED OPERATORS  

E-Print Network [OSTI]

LIMITING ABSORPTION PRINCIPLE FOR SINGULARLY PERTURBED OPERATORS WALTER RENGER Abstract. Given an operator H 1 for which a limiting absorption principle holds, we study operators H 2 which are produced that (except for possibly a discrete set of eigenvalues) a limiting absorption principle holds for H 2 . We

4

Telerobotic operation of structurally flexible, long-reach manipulators  

SciTech Connect (OSTI)

As a part of the Department of Energy`s Environmental Restoration and Waste Management Program, long-reach manipulators are being considered for the retrieval of waste from large storage tanks. Long-reach manipulators may have characteristics significantly different from those of typical industrial robots because of the flexibility of long links needed to cover the large workspace. To avoid structural vibrations during operation, control algorithms employing various types of shaping filters were investigated. A new approach that uses embedded simulation was developed and compared with others. In the new approach, generation of joint trajectories considering link flexibility was also investigated.

Kwon, D.S.; Hwang, D.H.; Babcock, S.M.

1994-09-01T23:59:59.000Z

5

DOE limited standard: Operations assessments  

SciTech Connect (OSTI)

Purpose of this standard is to provide DOE Field Element assessors with a guide for conducting operations assessments, and provide DOE Field Element managers with the criteria of the EM Operations Assessment Program. Sections 6.1 to 6.21 provide examples of how to assess specific areas; the general techniques of operations assessments (Section 5) may be applied to other areas of health and safety (e.g. fire protection, criticality safety, quality assurance, occupational safety, etc.).

NONE

1996-05-01T23:59:59.000Z

6

Automated Operating Procedures for Transfer Limits  

E-Print Network [OSTI]

Automated Operating Procedures for Transfer Limits Final Project Report Power Systems Engineering · Illinois · Iowa State · Texas A&M · Washington State · Wisconsin Automated Operating Procedures operating procedures to establish system constraints, particularly in regards to transfer limits across

7

Diffusion limited cluster aggregation with irreversible flexible bonds  

E-Print Network [OSTI]

Irreversible diffusion limited cluster aggregation (DLCA) of hard spheres was simulated using Brownian cluster dynamics. Bound spheres were allowed to move freely within a specified range, but no bond breaking was allowed. The structure and size distribution of the clusters was investigated before gelation. The pair correlation function and the static structure factor of the gels were determined as a function of the volume fraction and time. Bond flexibility led to local densification of the clusters and the gels, with a certain degree of order. At low volume fractions densification of the clusters occurred during their growth, but at higher volume fractions it occurred mainly after gelation. At very low volume fractions, the large scale structure (fractal dimension), size distribution and growth kinetics of the clusters was found to be close to that known for DLCA with rigid bonds. Restructuring of the gels continued for long times, indicating that aging processes in systems with strong attraction do not necessarily involve bond breaking. The mean square displacement of particles in the gels was determined. It is shown to be highly heterogeneous and to increase with decreasing volume fraction.

Sujin Babu; Jean-Christophe Gimel; Taco Nicolai

2008-01-29T23:59:59.000Z

8

Optimizing operational flexibility and enforcement liability in Title V permits  

SciTech Connect (OSTI)

Now that most states have interim or full approval of the portions of their state implementation plans (SIPs) implementing Title V (40 CFR Part 70) of the Clean Air Act Amendments (CAAA), most sources which require a Title V permit have submitted or are well on the way to submitting a Title V operating permit application. Numerous hours have been spent preparing applications to ensure the administrative completeness of the application and operational flexibility for the facility. Although much time and effort has been spent on Title V permit applications, the operating permit itself is the final goal. This paper outlines the major Federal requirements for Title V permits as given in the CAAA at 40 CFR 70.6, Permit Content. These Federal requirements and how they will effect final Title V permits and facilities will be discussed. This paper will provide information concerning the Federal requirements for Title V permits and suggestions on how to negotiate a Title V permit to maximize operational flexibility and minimize enforcement liability.

McCann, G.T. [Rust Environment and Infrastructure Inc., Greenville, SC (United States)

1997-12-31T23:59:59.000Z

9

Electrostatic Operation and Curvature Modeling for a MEMS Flexible Film Actuator  

E-Print Network [OSTI]

Electrostatic Operation and Curvature Modeling for a MEMS Flexible Film Actuator B. Edmonds, Jr.1 Introduction and Motivation The electrostatic flexible film actuator, also known as an "Artificial Eyelid," is a unique MEMS (MicroElectronic Mechanical System) actuator fabricated from polyimide and thin metal films

10

Incorporating operational flexibility into electric generation planning : impacts and methods for system design and policy analysis  

E-Print Network [OSTI]

This dissertation demonstrates how flexibility in hourly electricity operations can impact long-term planning and analysis for future power systems, particularly those with substantial variable renewables (e.g., wind) or ...

Palmintier, Bryan S. (Bryan Stephen)

2013-01-01T23:59:59.000Z

11

Proceedings: EPRI Workshop on Improved Operational Flexibility: Making the Most of Generating Assets  

SciTech Connect (OSTI)

EPRI conducted the Workshop on Improved Operational Flexibility in October 2003. This report presents the Proceedings from that workshop. Within the Proceedings, each session is captured with the presenters' presentation slides.

None

2004-07-01T23:59:59.000Z

12

EA-1894: Albeni Falls Flexible Winter Lake Operations, Bonner, Idaho  

Broader source: Energy.gov [DOE]

DOEs Bonneville Power Administration and the U.S. Army Corps of Engineers, as co-lead Federal agencies, prepared this EA to evaluate the potential environmental impacts of a proposal to operate Albeni Falls dam during the winter months (approximately December 15th to March 31st) and determine whether the existing Columbia River System Operation Review EIS (DOE/EIS-0170) is adequate or a supplemental or new EIS is required.

13

APS Beamline Station Operational Limits Information Page  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience4AJ01) (See95TI07)Operations2AP-XPS Measures

14

Operating limit evaluation for disposal of uranium enrichment plant wastes  

SciTech Connect (OSTI)

A proposed solid waste landfill at Paducah Gaseous Diffusion Plant (PGDP) will accept wastes generated during normal plant operations that are considered to be non-radioactive. However, nearly all solid waste from any source or facility contains small amounts of radioactive material, due to the presence in most materials of trace quantities of such naturally occurring radionuclides as uranium and thorium. This paper describes an evaluation of operating limits, which are protective of public health and the environment, that would allow waste materials containing small amounts of radioactive material to be sent to a new solid waste landfill at PGDP. The operating limits are expressed as limits on concentrations of radionuclides in waste materials that could be sent to the landfill based on a site-specific analysis of the performance of the facility. These limits are advantageous to PGDP and DOE for several reasons. Most importantly, substantial cost savings in the management of waste is achieved. In addition, certain liabilities that could result from shipment of wastes to a commercial off-site solid waste landfill are avoided. Finally, assurance that disposal operations at the PGDP landfill are protective of public health and the environment is provided by establishing verifiable operating limits for small amounts of radioactive material; rather than relying solely on administrative controls. The operating limit determined in this study has been presented to the Commonwealth of Kentucky and accepted as a condition to be attached to the operating permit for the solid waste landfill.

Lee, D.W.; Kocher, D.C.; Wang, J.C.

1996-02-01T23:59:59.000Z

15

Operational benefits of relaxed axial power distribution control limits  

SciTech Connect (OSTI)

Constant axial offset control (CAOC) was developed in the early 1970s in response to lower loss-of-coolant accident-based peaking factor limits. Th CAOC requires control of the axial power distribution within a specified band, typically +/- 5% or +3, -12% axial flux difference (AFD), about a measured target value of AFD. Operational outside of the CAOC limits results in the accumulation of penalty time. One hour of penalty time in any 24-h period is permitted. Although CAOC is sufficient to ensure peaking factor limits are satisfied, operation outside of CAOC limits is beneficial under certain conditions. Allowing a relaxation in CAOC restrictions can be used both to enhance the load follow capability of the plant by allowing control strategies that minimize the boron system duty or increase the return to power capability and to greatly increase the ability to return to power after a plant trip or shutdown. To achieve these benefits, relaxed axial offset control (RAOC) was developed. Other benefits of RAOC include a simplified technical specification and the ability to perform in-core/ex-core calibrations at higher powers. Duke Power Company has benefited in many of these ways by changing from CAOC power distribution limits to RAOC power distribution limits at the McGuire Nuclear Station. One of the chief benefits has been the ability to achieve full power much more quickly following shutdowns of short duration and reactor trips during the last half of the cycle lifetime.

Kitlan, M.S. Jr.; Miller, R.W.

1987-01-01T23:59:59.000Z

16

Flexible Solar-Energy Harvesting System on Plastic with Thin-film LC Oscillators Operating Above ft for  

E-Print Network [OSTI]

Flexible Solar-Energy Harvesting System on Plastic with Thin-film LC Oscillators Operating Above ft- This paper presents an energy-harvesting system consisting of amorphous-silicon (a-Si) solar cells and thin of the energy-harvesting system. The solar module consists of solar cells in series operating at an output

17

SUBTASK 2.19 OPERATIONAL FLEXIBILITY OF CO2 TRANSPORT AND STORAGE  

SciTech Connect (OSTI)

Carbon dioxide (CO2) is produced in large quantities during electricity generation and by industrial processes. These CO2 streams vary in terms of both composition and mass flow rate, sometimes substantially. The impact of a varying CO2 stream on pipeline and storage operation is not fully understood in terms of either operability or infrastructure robustness. This study was performed to summarize basic background from the literature on the topic of operational flexibility of CO2 transport and storage, but the primary focus was on compiling real-world lessons learned about flexible operation of CO2 pipelines and storage from both large-scale field demonstrations and commercial operating experience. Modeling and pilot-scale results of research in this area were included to illustrate some of the questions that exist relative to operation of carbon capture and storage (CCS) projects with variable CO2 streams. It is hoped that this reports real-world findings provide readers with useful information on the topic of transport and storage of variable CO2 streams. The real-world results were obtained from two sources. The first source consisted of five full-scale, commercial transportstorage projects: Sleipner, Snhvit, In Salah, Weyburn, and Illinois BasinDecatur. These scenarios were reviewed to determine the information that is available about CO2 stream variability/intermittency on these demonstration-scale projects. The five projects all experienced mass flow variability or an interruption in flow. In each case, pipeline and/or injection engineers were able to accommodate any issues that arose. Significant variability in composition has not been an issue at these five sites. The second source of real- world results was telephone interviews conducted with experts in CO2 pipeline transport, injection, and storage during which commercial anecdotal information was acquired to augment that found during the literature search of the five full-scale projects. The experts represented a range of disciplines and hailed from North America and Europe. Major findings of the study are that compression and transport of CO2 for enhanced oil recovery (EOR) purposes in the United States has shown that impurities are not likely to cause transport problems if CO2 stream composition standards are maintained and pressures are kept at 10.3 MPa or higher. Cyclic, or otherwise intermittent, CO2 supplies historically have not impacted in-field distribution pipeline networks, wellbore integrity, or reservoir conditions. The U.S. EOR industry has demonstrated that it is possible to adapt to variability and intermittency in CO2 supply through flexible operation of the pipeline and geologic storage facility. This CO2 transport and injection experience represents knowledge that can be applied in future CCS projects. A number of gaps in knowledge were identified that may benefit from future research and development, further enhancing the possibility for widespread application of CCS. This project was funded through the Energy & Environmental Research CenterU.S. Department of Energy Joint Program on Research and Development for Fossil Energy-Related Resources Cooperative Agreement No. DE-FC26-08NT43291. Nonfederal funding was provided by the IEA Greenhouse Gas R&D Programme.

Jensen, Melanie; Schlasner, Steven; Sorensen, James; Hamling, John

2014-12-31T23:59:59.000Z

18

Welcome to the Operation READY 2002 collection Flexible formats: print, CD-ROM, DVD video and Web  

E-Print Network [OSTI]

1 Welcome to the Operation READY 2002 collection Flexible formats: print, CD-ROM, DVD video and Web and deployment New and updated videos Family Assistance Center Workshops and sessions are shorter Scenarios are shorter Lessons are self-contained Planning and executing a FACEX added New and updated video Homecoming

19

Assessing the operational life of flexible printed boards intended for continuous flexing applications : a case study.  

SciTech Connect (OSTI)

Through the vehicle of a case study, this paper describes in detail how the guidance found in the suite of IPC (Association Connecting Electronics Industries) publications can be applied to develop a high level of design assurance that flexible printed boards intended for continuous flexing applications will satisfy specified lifetime requirements.

Beck, David Franklin

2011-01-01T23:59:59.000Z

20

Implementation of multipartite unitary operations with limited resources  

E-Print Network [OSTI]

A general method for implementing weakly entangling multipartite unitary operations using a small amount of entanglement and classical communication is presented. For the simple Hamiltonian \\sigma_z\\otimes\\sigma_z this method requires less entanglement than previously known methods. In addition, compression of multiple operations is applied to reduce the average communication required.

Dominic W. Berry

2006-08-20T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

About the Limiting Behaviour of Iterated Robust Morphological Operators  

E-Print Network [OSTI]

Guanajuato, Gto., Mexico horebeek@cimat.mx 2 Freie Universitat Berlin, Institut fur Informatik Tacostr. 9 of morphological operators. To this purpose, we describe the implied iterative process by a discrete dynamical morphology is an important branch of non-linear signal process- ing. It has its roots in discrete geometry

Van Horebeek, Johan

22

On the High Load Limit of Boosted Gasoline HCCI Engine Operating in NVO mode  

E-Print Network [OSTI]

The high load limit of a boosted homogeneous-charge-compression-ignition (HCCI) engine operating on negative-valve-overlap (NVO) was assessed. When operating under stoichiometric condition with no external dilution, the ...

Scaringe, Robert J.

23

Flood control reservoir operations for conditions of limited storage capacity  

E-Print Network [OSTI]

). Therefore, if the entire flood control capacity of a reservoir is available, only an extremely severe flood event would require the implementation of the EOS for most reservoir projects, and thus the bulk of the research has been focused on how to manage... operations objectives. In other words, the REOS provide a set of rules that reflect the risk of flooding upstream as well as downstream of the dams. The USACE and other reservoir management agencies may use the methodology proposed in this study...

Rivera Ramirez, Hector David

2005-02-17T23:59:59.000Z

24

Analysis of operations and cyber security policies for a system of cooperating Flexible Alternating Current Transmission System (FACTS) devices.  

SciTech Connect (OSTI)

Flexible Alternating Current Transmission Systems (FACTS) devices are installed on electric power transmission lines to stabilize and regulate power flow. Power lines protected by FACTS devices can increase power flow and better respond to contingencies. The University of Missouri Rolla (UMR) is currently working on a multi-year project to examine the potential use of multiple FACTS devices distributed over a large power system region in a cooperative arrangement in which the FACTS devices work together to optimize and stabilize the regional power system. The report describes operational and security challenges that need to be addressed to employ FACTS devices in this way and recommends references, processes, technologies, and policies to address these challenges.

Phillips, Laurence R.; Tejani, Bankim; Margulies, Jonathan; Hills, Jason L.; Richardson, Bryan T.; Baca, Micheal J.; Weiland, Laura

2005-12-01T23:59:59.000Z

25

Tehcnology Choices for New Entrants in Liberalised Markets: The Value of Operating Flexibility and Contractual Arrangements  

E-Print Network [OSTI]

the detrimental impact of emissions trading on market power in gas markets, while Green (2007) uses a supply function approach to asses the impact of emissions trading on generators profits and risks. Figure 5 Expected (mean) NPV with and without operating...

Roques, Fabien A

26

Limit Operators, Collective Compactness, and the Spectral Theory of Infinite Matrices  

E-Print Network [OSTI]

In the first half of this text we explore the interrelationships between the abstract theory of limit operators (see e.g. the recent monographs of Rabinovich, Roch & Silbermann and Lindner) and the concepts and results of the generalised collectively compact operator theory introduced by Chandler-Wilde and Zhang. We build up to results obtained by applying this generalised collectively compact operator theory to the set of limit operators of an operator $A$. In the second half of this text we study bounded linear operators on the generalised sequence space $\\ell^p(\\Z^N,U)$, where $p\\in [1,\\infty]$ and $U$ is some complex Banach space. We make what seems to be a more complete study than hitherto of the connections between Fredholmness, invertibility, invertibility at infinity, and invertibility or injectivity of the set of limit operators, with some emphasis on the case when the operator $A$ is a locally compact perturbation of the identity. Especially, we obtain stronger results than previously known for the subtle limiting cases of $p=1$ and $\\infty$. Our tools in this study are the results from the first half of the text and an exploitation of the partial duality between $\\ell^1$ and $\\ell^\\infty$. Results in this second half of the text include a new proof that injectivity of all limit operators (the classic Favard condition) implies invertibility for a general class of almost periodic operators, and characterisations of invertibility at infinity and Fredholmness for operators in the so-called Wiener algebra. In two final chapters our results are illustrated by and applied to concrete examples. Firstly, we study the spectra and essential spectra of discrete Schr\\"odinger operators (both self-adjoint and non-self-adjoint), including operators with almost periodic and random potentials. In the final chapter we apply our results to integral operators on $\\R^N$.

Simon N. Chandler-Wilde; Marko Lindner

2010-05-05T23:59:59.000Z

27

Recirculation on a single stage of vertical flow constructed wetland: treatment limits and operation modes  

E-Print Network [OSTI]

1 Recirculation on a single stage of vertical flow constructed wetland: treatment limits French vertical flow constructed wetlands (VFCWs) plant comprises two stages of treatment which the first and treatment performances in different operating conditions. Results showed good performances

Paris-Sud XI, Université de

28

New strategies for avoiding robot joint limits: Application to visual servoing using a large projection operator  

E-Print Network [OSTI]

. Using the new projection operator allows a significant improvement of the joint avoidance processNew strategies for avoiding robot joint limits: Application to visual servoing using a large projection operator Mohammed Marey & Franc¸ois Chaumette Abstract-- In this paper, we present a new

Paris-Sud XI, Université de

29

Dynamic Analysis of Hybrid Energy Systems under Flexible Operation and Variable Renewable Generation -- Part I: Dynamic Performance Analysis and Part II: Dynamic Cost  

SciTech Connect (OSTI)

Dynamic analysis of hybrid energy systems (HES) under flexible operation and variable renewable generation is considered in order to better understand various challenges and opportunities associated with the high system variability arising from the integration of renewable energy into the power grid. Unique consequences are addressed by devising advanced HES solutions in which multiple forms of energy commodities, such as electricity and chemical products, may be exchanged. Dynamic models of various unit operations are developed and integrated within two different HES options. One HES option, termed traditional, produces electricity only and consists of a primary heat generator (PHG) (e.g., a small modular reactor), a steam turbine generator, a wind farm, and a battery storage. The other HES option, termed advanced, includes not only the components present in the traditional option but also a chemical plant complex to repurpose excess energy for non-electricity services, such as for the production of chemical goods (e.g., transportation fuel). In either case, a given HES is connected to the power grid at a point of common coupling and requested to deliver a certain electricity generation profile as dictated by a regional power grid operator based on a predicted demand curve. Dynamic analysis of these highly-coupled HES are performed to identify their key dynamical properties and limitations and to prescribe solutions for best managing and mitigating the high variability introduced from incorporating renewable energy into the energy mix. A comparative dynamic cost analysis is also conducted to determine best HES options. The cost function includes a set of metrics for computing fixed costs, such as fixed operations and maintenance (O&M) and overnight capital costs, and also variable operational costs, such as cost of variability, variable O&M cost, and cost of environmental impact, together with revenues. Assuming different options for implementing PHG (e.g., natural gas, coal, nuclear), preliminary results identify the level of renewable penetration at which a given advanced HES option (e.g., a nuclear hybrid) becomes increasingly more economical than a traditional electricity-only generation solution. Conditions are also revealed under which carbon resources may be better utilized as carbon sources for chemical production rather than as combustion material for electricity generation.

Humberto E. Garcia; Amit Mohanty; Wen-Chiao Lin; Robert S. Cherry

2013-04-01T23:59:59.000Z

30

Operating limit study for the proposed solid waste landfill at Paducah Gaseous Diffusion Plant  

SciTech Connect (OSTI)

A proposed solid waste landfill at Paducah Gaseous Diffusion Plant (PGDP) would accept wastes generated during normal operations that are identified as non-radioactive. These wastes may include small amounts of radioactive material from incidental contamination during plant operations. A site-specific analysis of the new solid waste landfill is presented to determine a proposed operating limit that will allow for waste disposal operations to occur such that protection of public health and the environment from the presence of incidentally contaminated waste materials can be assured. Performance objectives for disposal were defined from existing regulatory guidance to establish reasonable dose limits for protection of public health and the environment. Waste concentration limits were determined consistent with these performance objectives for the protection of off-site individuals and inadvertent intruders who might be directly exposed to disposed wastes. Exposures of off-site individuals were estimated using a conservative, site-specific model of the groundwater transport of contamination from the wastes. Direct intrusion was analyzed using an agricultural homesteader scenario. The most limiting concentrations from direct intrusion or groundwater transport were used to establish the concentration limits for radionuclides likely to be present in PGDP wastes.

Lee, D.W.; Wang, J.C.; Kocher, D.C.

1995-06-01T23:59:59.000Z

31

Temperature limits for LMFBR fuel cladding under upset and emergency operating conditions  

SciTech Connect (OSTI)

LMFBR fuel pin cladding tube is subjected to high transient temperatures during incidents such as pump trip, pump to grid plate pipe rupture etc. It is required to know temperature limits under such transient operating conditions for components involved while analyzing such incidents. A methodology for deriving such limits for fuel clad tube is worked out in this paper by making use of the transient damage correlation proposed by W.F. Brizes et. al.

Govindarajan, S.; Chetal, S.C. [Indira Gandhi Centre for Atomic Research, Kalpakkam Tamilnadu (India). Nuclear Systems Division

1996-07-01T23:59:59.000Z

32

High energy bursts from a solid state laser operated in the heat capacity limited regime  

DOE Patents [OSTI]

High energy bursts are produced from a solid state laser operated in a heat capacity limited regime. Instead of cooling the laser, the active medium is thermally well isolated. As a result, the active medium will heat up until it reaches some maximum acceptable temperature. The waste heat is stored in the active medium itself. Therefore, the amount of energy the laser can put out during operation is proportional to its mass, the heat capacity of the active medium, and the temperature difference over which it is being operated. The high energy burst capacity of a heat capacity operated solid state laser, together with the absence of a heavy, power consuming steady state cooling system for the active medium, will make a variety of applications possible. Alternately, cooling takes place during a separate sequence when the laser is not operating. Industrial applications include new material working processes. 5 figs.

Albrecht, G.; George, E.V.; Krupke, W.F.; Sooy, W.; Sutton, S.B.

1996-06-11T23:59:59.000Z

33

High energy bursts from a solid state laser operated in the heat capacity limited regime  

DOE Patents [OSTI]

High energy bursts are produced from a solid state laser operated in a heat capacity limited regime. Instead of cooling the laser, the active medium is thermally well isolated. As a result, the active medium will heat up until it reaches some maximum acceptable temperature. The waste heat is stored in the active medium itself. Therefore, the amount of energy the laser can put out during operation is proportional to its mass, the heat capacity of the active medium, and the temperature difference over which it is being operated. The high energy burst capacity of a heat capacity operated solid state laser, together with the absence of a heavy, power consuming steady state cooling system for the active medium, will make a variety of applications possible. Alternately, cooling takes place during a separate sequence when the laser is not operating. Industrial applications include new material working processes.

Albrecht, Georg (Livermore, CA); George, E. Victor (Livermore, CA); Krupke, William F. (Pleasanton, CA); Sooy, Walter (Pleasanton, CA); Sutton, Steven B. (Manteca, CA)

1996-01-01T23:59:59.000Z

34

Determination of operating limits for radionuclides for a proposed landfill at Paducah Gaseous Diffusion Plant  

SciTech Connect (OSTI)

The operating limits for radionuclides in sanitary and industrial wastes were determined for a proposed landfill at the Paducah Gaseous Diffusion Plant (PGDP), Kentucky. These limits, which may be very small but nonzero, are not mandated by law or regulation but are needed for rational operation. The approach was based on analyses of the potential contamination of groundwater at the plant boundary and the potential exposure to radioactivity of an intruder at the landfill after closure. The groundwater analysis includes (1) a source model describing the disposal of waste and the release of radionuclides from waste to the groundwater, (2) site-specific groundwater flow and contaminant transport calculations, and (3) calculations of operating limits from the dose limit and conversion factors. The intruder analysis includes pathways through ingestion of contaminated vegetables and soil, external exposure to contaminated soil, and inhalation of suspended activity from contaminated soil particles. In both analyses, a limit on annual effective dose equivalent of 4 mrem (0.04 mSv) was adopted. The intended application of the results is to refine the radiological monitoring standards employed by the PGDP Health Physics personnel to determine what constitutes radioactive wastes, with concurrence of the Commonwealth of Kentucky.

Wang, J.C.; Lee, D.W.; Ketelle, R.H.; Lee, R.R.; Kocher, D.C.

1994-05-24T23:59:59.000Z

35

Limiter  

DOE Patents [OSTI]

A limiter with a specially contoured front face is provided. The front face of the limiter (the plasma-side face) is flat with a central indentation. In addition, the limiter shape is cylindrically symmetric so that the limiter can be rotated for greater heat distribution. This limiter shape accommodates the various power scrape-off distances lambda p, which depend on the parallel velocity, V/sub parallel/, of the impacting particles.

Cohen, S.A.; Hosea, J.C.; Timberlake, J.R.

1984-10-19T23:59:59.000Z

36

Torque limit of PM motors for field-weakening region operation  

DOE Patents [OSTI]

The invention includes a motor controller and technique for controlling a permanent magnet motor. In accordance with one aspect of the present technique, a permanent magnet motor is controlled by receiving a torque command, determining a physical torque limit based on a stator frequency, determining a theoretical torque limit based on a maximum available voltage and motor inductance ratio, and limiting the torque command to the smaller of the physical torque limit and the theoretical torque limit. Receiving the torque command may include normalizing the torque command to obtain a normalized torque command, determining the physical torque limit may include determining a normalized physical torque limit, determining a theoretical torque limit may include determining a normalized theoretical torque limit, and limiting the torque command may include limiting the normalized torque command to the smaller of the normalized physical torque limit and the normalized theoretical torque limit.

Royak, Semyon (Beachwood, OH); Harbaugh, Mark M. (Richfield, OH)

2012-02-14T23:59:59.000Z

37

Evaluation of exposure limits to toxic gases for nuclear reactor control room operators  

SciTech Connect (OSTI)

We have evaluated ammonia, chlorine, Halon (actually a generic name for several halogenated hydro-carbons), and sulfur dioxide for their possible effects during an acute two-minute exposure in order to derive recommendations for maximum exposure levels. To perform this evaluation, we conducted a search to find the most pertinent literature regarding toxicity in humans and in experimental animals. Much of the literature is at least a decade old, not an unexpected finding since acute exposures are less often performed now than they were a few years ago. In most cases, the studies did not specifically examine the effects of two-minute exposures; thus, extrapolations had to be made from studies of longer-exposure periods. Whenever possible, we gave the greatest weight to human data, with experimental animal data serving to strengthen the conclusion arrived at from consideration of the human data. Although certain individuals show hypersensitivity to materials like sulfur dioxide, we have not attempted to factor this information into the recommendations. After our evaluation of the data in the literature, we held a small workshop. Major participants in this workshop were three consultants, all of whom were Diplomates of the American Board of Toxicology, and staff from the Nuclear Regulatory Commission. Our preliminary recommendations for two-minute exposure limits and the rationale for them were discussed and consensus reached on final recommendations. These recommendations are: (1) ammonia-300 to 400-ppm; (2) chlorine-30 ppm; (3) Halon 1301-5%; Halon 1211-2%; and (4) sulfur dioxide-100 ppm. Control room operators should be able to tolerate two-minute exposures to these levels, don fresh-air masks, and continue to operate the reactor if the toxic material is eliminated, or safely shut down the reactor if the toxic gas remains. 96 refs., 9 tabs.

Mahlum, D.D.; Sasser, L.B. (Pacific Northwest Lab., Richland, WA (United States))

1991-07-01T23:59:59.000Z

38

Theory of factors limiting high gradient operation of warm accelerating structures  

SciTech Connect (OSTI)

This final report summarizes the research performed during the time period from 8/1/2010 to 7/31/2013. It consists of two parts describing our studies in two directions: (a) analysis of factors limiting operation of dielectric-loaded accelerating (DLA) structures where the main problem is the occurrence of multipactor on dielectric surfaces, and (b) studies of effects associated with either RF magnetic or RF electric fields which may cause the RF breakdown in high-gradient metallic accelerating structures. In the studies of DLA structures, at least, two accomplishments should be mentioned: the development of a 3D non-stationary, self-consistent code describing the multipactor phenomena and yielding very good agreement with some experimental data obtained in joint ANL/NRL experiments. In the metallic structures, such phenomena as the heating and melting of micro-particles (metallic dust) by RF electric and magnetic fields in single-shot and rep-rate regimes is analyzed. Also, such processes in micro-protrusions on the structure surfaces as heating and melting due to the field emitted current and the Nottingham effect are thoroughly investigated with the account for space charge of emitted current on the field emission from the tip.

Nusinovich, Gregory S. [University of Maryland; Antonsen, Thomas M. [University of Maryland; Kishek, Rami [University of Maryland

2014-07-25T23:59:59.000Z

39

This paper considers the pricing of operational flexibility. By extending the recently develoed duality ideas for American option pricing we develop a dual representation for the problem and give  

E-Print Network [OSTI]

;3 1 Introduction A fundamental problem encountered in exotic energy derivatives is the pricing1 Abstract This paper considers the pricing of operational flexibility. By extending the recently develoed duality ideas for American option pricing we develop a dual representation for the problem

Ludkovski, Mike

40

Measurement of limiter heating due to fusion product losses during high fusion power deuterium-tritium operation of TFTR  

SciTech Connect (OSTI)

Preliminary analysis has been completed on measurements of limiter heating during high fusion power deuterium-tritium (D-T) operation of TFTR, in an attempt to identify heating from alpha particle losses. Recent operation of TFTR with a 50-50 mix of D-T has resulted in fusion power output ({approx} 6.2 MW) orders of magnitude above what was previously achieved on TFTR. A significantly larger absolute number of particles and energy from fusion products compared to D-D operation is expected to be lost to the limiters. Measurements were made in the vicinity of the midplane ({plus_minus} 30{degree}) with thermocouples mounted on the tiles of an outboard limiter. Comparisons were made -between discharges which were similar except for the mix of deuterium and tritium beam sources. Power and energy estimates of predicted alpha losses were as high as 0.13 MW and 64 kJ. Depending on what portion of the limiters absorbed this energy, temperature rises of up to 42 {degrees}C could be expected, corresponding to a heat load of 0.69 MJ/m{sup 2} over a 0.5 sec period, or a power load of 1.4 MW/m{sup 2}. There was a measurable increase in the limiter tile temperature as the fusion power yield increased with a more reactive mixture of D and T at constant beam power during high power D-T operation. Analysis of the data is being conducted to see if the alpha heating component can be extracted. Measured temperature increases were no greater than 1 {degree}C, indicating that there was probably neither an unexpectedly large fraction of lost particles nor unexpected localization of the losses. Limits on the stochastic ripple loss contribution from alphas can be deduced.

Janos, A.; Owens, D.K.; Darrow, D.; Redi, M.; Zarnstorff, M.; Zweben, S.

1995-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Evaluation of design and operating speeds for crest vertical curves with limited sight distance  

E-Print Network [OSTI]

The Puerto Colon field is located in the Putumayo basin in southern Colombia, South America, and is operated by Empresa Colombiana de petroleos (ECOPETROL), which is the national oil company. The field produces from the Cretaceous sandstones...

Russell, Charles William

1994-01-01T23:59:59.000Z

42

Criticality Safety Evaluations on the Use of 200-gram Pu Mass Limit for RHWM Waste Storage Operations  

SciTech Connect (OSTI)

This work establishes the criticality safety technical basis to increase the fissile mass limit from 120 grams to 200 grams for Type A 55-gallon drums and their equivalents. Current RHWM fissile mass limit is 120 grams Pu for Type A 55-gallon containers and their equivalent. In order to increase the Type A 55-gallon drum limit to 200 grams, a few additional criticality safety control requirements are needed on moderators, reflectors, and array controls to ensure that the 200-gram Pu drums remain criticality safe with inadvertent criticality remains incredible. The purpose of this work is to analyze the use of 200-gram Pu drum mass limit for waste storage operations in Radioactive and Hazardous Waste Management (RHWM) Facilities. In this evaluation, the criticality safety controls associated with the 200-gram Pu drums are established for the RHWM waste storage operations. With the implementation of these criticality safety controls, the 200-gram Pu waste drum storage operations are demonstrated to be criticality safe and meet the double-contingency-principle requirement per DOE O 420.1.

Chou, P

2011-12-14T23:59:59.000Z

43

A methodology for identifying flexible design opportunities  

E-Print Network [OSTI]

Technical and operational uncertainties dynamically change environments for engineering systems. Flexibility allows systems to continue delivering value as the uncertainty unfolds. Uncertainty can better be managed by ...

Wilds, Jennifer M

2008-01-01T23:59:59.000Z

44

Operational limit of closed loop pulsating heat pipes Honghai Yang a,*, S. Khandekar b  

E-Print Network [OSTI]

a College of Environmental Science and Engineering, Donghua University, Shanghai 200051, PR China b of a total of 40 copper tubes with 1 mm and 2 mm inner diameter, respectively. R123 was employed important ones. In both cases the limit will manifest itself by an unacceptable over- heating

Khandekar, Sameer

45

PRICING ASSET SCHEDULING FLEXIBILITY USING OPTIMAL SWITCHING RENE CARMONA AND MICHAEL LUDKOVSKI  

E-Print Network [OSTI]

PRICING ASSET SCHEDULING FLEXIBILITY USING OPTIMAL SWITCHING REN´E CARMONA AND MICHAEL LUDKOVSKI Abstract. We study the financial engineering aspects of operational flexibility of energy assets methods. 1. Introduction. Pricing of operational flexibility is one of the fundamental problems

Ludkovski, Mike

46

Establishing low-power operating limits for liquid metal heat pipes  

SciTech Connect (OSTI)

Liquid metal heat pipes operated at power throughputs well below their design point for long durations may fail as a result of the working fluid migrating to a cold region within the pipe, freezing there, and hot returning to the evaporator section. Eventually sufficient working fluid inventory may be lost to the cold region to cause a local dry-out condition in the evaporator. A joint experimental and analytical effort between the Air Force Phillips Laboratory and Los Alamos National Laboratory is underway to investigate the phenomena. Experiments include both high temperature liquid metal and low temperature organic heat pipes. To date, a low temperature working fluid has been selected and its performance in a heat pipe validated. Additionally, a low-temperature heat pipe has been fabricated and is presently being tested.

Secary, J. (Phillips Lab., Kirtland AFB, NM (United States)); Merrigan, M.A.; Keddy, M.D. (Los Alamos National Lab., NM (United States))

1992-01-01T23:59:59.000Z

47

Establishing low-power operating limits for liquid metal heat pipes  

SciTech Connect (OSTI)

Liquid metal heat pipes operated at power throughputs well below their design point for long durations may fail as a result of the working fluid migrating to a cold region within the pipe, freezing there, and hot returning to the evaporator section. Eventually sufficient working fluid inventory may be lost to the cold region to cause a local dry-out condition in the evaporator. A joint experimental and analytical effort between the Air Force Phillips Laboratory and Los Alamos National Laboratory is underway to investigate the phenomena. Experiments include both high temperature liquid metal and low temperature organic heat pipes. To date, a low temperature working fluid has been selected and its performance in a heat pipe validated. Additionally, a low-temperature heat pipe has been fabricated and is presently being tested.

Secary, J. [Phillips Lab., Kirtland AFB, NM (United States); Merrigan, M.A.; Keddy, M.D. [Los Alamos National Lab., NM (United States)

1992-05-01T23:59:59.000Z

48

AMO Fuel and Feedstock Flexibility: Fuel-Flexible Combustion...  

Broader source: Energy.gov (indexed) [DOE]

AMO Fuel and Feedstock Flexibility: Fuel-Flexible Combustion System for Refinery and Chemical Plant Process Heaters AMO Fuel and Feedstock Flexibility: Fuel-Flexible Combustion...

49

Flexible Coal: Evolution from Baseload to Peaking Plant (Brochure)  

SciTech Connect (OSTI)

Twenty-first century power systems, with higher penetration levels of low-carbon energy, smart grids, and other emerging technologies, will favor resources that have low marginal costs and provide system flexibility (e.g., the ability to cycle on and off to follow changes in variable renewable energy plant output). Questions remain about both the fate of coal plants in this scenario and whether they can cost-effectively continue to operate if they cycle routinely. The experience from the CGS plant demonstrates that coal plants can become flexible resources. This flexibility - namely the ability to cycle on and off and run at lower output (below 40% of capacity) - requires limited hardware modifications but extensive modifications to operational practice. Cycling does damage the plant and impact its life expectancy compared to baseload operations. Nevertheless, strategic modifications, proactive inspections and training programs, among other operational changes to accommodate cycling, can minimize the extent of damage and optimize the cost of maintenance. CGS's cycling, but not necessarily the associated price tag, is replicable. Context - namely, power market opportunities and composition of the generation fleet - will help determine for other coal plants the optimal balance between the level of cycling-related forced outages and the level of capital investment required to minimize those outages. Replicating CGS's experience elsewhere will likely require a higher acceptance of forced outages than regulators and plant operators are accustomed to; however, an increase in strategic maintenance can minimize the impact on outage rates.

Cochran, J.; Lew, D.; Kumar, N.

2013-12-01T23:59:59.000Z

50

Flexible hydropower: boosting energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Flexible hydropower: boosting energy Flexible hydropower: boosting energy New hydroelectric resource for Northern New Mexico supplies clean energy to homes, businesses and the Lab....

51

Flexibility in 21st Century Power Systems  

SciTech Connect (OSTI)

Flexibility of operation--the ability of a power system to respond to change in demand and supply--is a characteristic of all power systems. Flexibility is especially prized in twenty-first century power systems, with higher levels of grid-connected variable renewable energy (primarily, wind and solar). This paper summarizes the analytic frameworks that have emerged to measure this characteristic and distills key principles of flexibility for policy makers.

Cochran, J.; Miller, M.; Zinaman, O.; Milligan, M.; Arent, D.; Palmintier, B.; O'Malley, M.; Mueller, S.; Lannoye, E.; Tuohy, A.; Kujala, B.; Sommer, M.; Holttinen, H.; Kiviluoma, J.; Soonee, S. K.

2014-05-01T23:59:59.000Z

52

Impact of Generator Flexibility on Electric System Costs and Integration of Renewable Energy  

SciTech Connect (OSTI)

Flexibility of traditional generators plays an important role in accommodating the increased variability and uncertainty of wind and solar on the electric power system. Increased flexibility can be achieved with changes to operational practices or upgrades to existing generation. One challenge is in understanding the value of increasing flexibility, and how this value may change given higher levels of variable generation. This study uses a commercial production cost model to measure the impact of generator flexibility on the integration of wind and solar generators. We use a system that is based on two balancing areas in the Western United States with a range of wind and solar penetrations between 15% and 60%, where instantaneous penetration of wind and solar is limited to 80%.

Palchak, D.; Denholm, P.

2014-07-01T23:59:59.000Z

53

Flexible ultrasonic pipe inspection apparatus  

DOE Patents [OSTI]

A flexible, modular ultrasonic pipe inspection apparatus, comprising a flexible, hollow shaft that carries a plurality of modules, including at least one rotatable ultrasonic transducer, a motor/gear unit, and a position/signal encoder. The modules are connected by flexible knuckle joints that allow each module of the apparatus to change its relative orientation with respect to a neighboring module, while the shaft protects electrical wiring from kinking or buckling while the apparatus moves around a tight corner. The apparatus is moved through a pipe by any suitable means, including a tether or drawstring attached to the nose or tail, differential hydraulic pressure, or a pipe pig. The rotational speed of the ultrasonic transducer and the forward velocity of the apparatus are coordinated so that the beam sweeps out the entire interior surface of the pipe, enabling the operator to accurately assess the condition of the pipe wall and determine whether or not leak-prone corrosion damage is present.

Jenkins, Charles F. (Aiken, SC); Howard, Boyd D. (Augusta, GA)

1998-01-01T23:59:59.000Z

55

Flexible Assembly Solar Technology  

Broader source: Energy.gov (indexed) [DOE]

2007-2010 BrightSource Energy, Inc. All rights reserved. 1 Flexible Assembly Solar Technology Binyamin Koretz Director, Strategic Planning & IP 2 Proprietary &...

56

Flexibility in 21st Century Power Systems (Fact Sheet)  

SciTech Connect (OSTI)

Flexibility of operation--the ability of a power system to respond to change in demand and supply--is a characteristic of all power systems. Flexibility is especially prized in twenty-first century power systems, with higher levels of grid-connected variable renewable energy (primarily, wind and solar). Sources of flexibility exist--and can be enhanced--across all of the physical and institutional elements of the power system, including system operations and markets, demand side resources and storage; generation; and transmission networks. Accessing flexibility requires significant planning to optimize investments and ensure that both short- and long-time power system requirements are met.

Not Available

2014-10-01T23:59:59.000Z

57

Flexible Coal: An Example Evolution from Baseload to Peaking Plant (Presentation)  

SciTech Connect (OSTI)

Twenty-first century power systems, with higher penetration levels of low-carbon energy, smart grids, and other emerging technologies, will favor resources that have low marginal costs and provide system flexibility (e.g., the ability to cycle on and off to follow changes in variable renewable energy plant output). Questions remain about both the fate of coal plants in this scenario and whether they can cost-effectively continue to operate if they cycle routinely. The experience from the CGS plant demonstrates that coal plants can become flexible resources. This flexibility - namely the ability to cycle on and off and run at lower output (below 40% of capacity) - requires limited hardware modifications but extensive modifications to operational practice. Cycling does damage the plant and impact its life expectancy compared to baseload operations. Nevertheless, strategic modifications, proactive inspections and training programs, among other operational changes to accommodate cycling, can minimize the extent of damage and optimize the cost of maintenance. CGS's cycling, but not necessarily the associated price tag, is replicable. Context - namely, power market opportunities and composition of the generation fleet - will help determine for other coal plants the optimal balance between the level of cycling-related forced outages and the level of capital investment required to minimize those outages. Replicating CGS's experience elsewhere will likely require a higher acceptance of forced outages than regulators and plant operators are accustomed to; however, an increase in strategic maintenance can minimize the impact on outage rates.

Cochran, J.

2014-05-01T23:59:59.000Z

58

Flexible Coal: An Example Evolution from Baseload to Peaking Plant (Presentation)  

SciTech Connect (OSTI)

Twenty-first century power systems, with higher penetration levels of low-carbon energy, smart grids, and other emerging technologies, will favor resources that have low marginal costs and provide system flexibility (e.g., the ability to cycle on and off to follow changes in variable renewable energy plant output). Questions remain about both the fate of coal plants in this scenario and whether they can cost-effectively continue to operate if they cycle routinely. The experience from the CGS plant demonstrates that coal plants can become flexible resources. This flexibility - namely the ability to cycle on and off and run at lower output (below 40% of capacity) - requires limited hardware modifications but extensive modifications to operational practice. Cycling does damage the plant and impact its life expectancy compared to baseload operations. Nevertheless, strategic modifications, proactive inspections and training programs, among other operational changes to accommodate cycling, can minimize the extent of damage and optimize the cost of maintenance. CGS's cycling, but not necessarily the associated price tag, is replicable. Context - namely, power market opportunities and composition of the generation fleet - will help determine for other coal plants the optimal balance between the level of cycling-related forced outages and the level of capital investment required to minimize those outages. Replicating CGS's experience elsewhere will likely require a higher acceptance of forced outages than regulators and plant operators are accustomed to; however, an increase in strategic maintenance can minimize the impact on outage rates.

Cochran, J.

2014-08-01T23:59:59.000Z

59

Flexible ultrasonic pipe inspection apparatus  

DOE Patents [OSTI]

A flexible, modular ultrasonic pipe inspection apparatus, comprises a flexible, hollow shaft that carries a plurality of modules, including at least one rotatable ultrasonic transducer, a motor/gear unit, and a position/signal encoder. The modules are connected by flexible knuckle joints that allow each module of the apparatus to change its relative orientation with respect to a neighboring module, while the shaft protects electrical wiring from kinking or buckling while the apparatus moves around a tight corner. The apparatus is moved through a pipe by any suitable means, including a tether or drawstring attached to the nose or tail, differential hydraulic pressure, or a pipe pig. The rotational speed of the ultrasonic transducer and the forward velocity of the apparatus are coordinated so that the beam sweeps out the entire interior surface of the pipe, enabling the operator to accurately assess the condition of the pipe wall and determine whether or not leak-prone corrosion damage is present. 7 figs.

Jenkins, C.F.; Howard, B.D.

1998-06-23T23:59:59.000Z

60

Rolling cuff flexible bellows  

DOE Patents [OSTI]

A flexible connector apparatus used to join two stiff non-deformable members, such as piping. The apparatus is provided with one or more flexible sections or assemblies each utilizing a bellows of a rolling cuff type connected between two ridge members, with the bellows being supported by a back-up ring, such that only the curved end sections of the bellows are unsupported. Thus, the bellows can be considered as being of a tube-shaped configuration and thus have high pressure resistance. The components of the flexible apparatus are sealed or welded one to another such that it is fluid tight.

Lambert, Donald R. (Livermore, CA)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Flexible Capital Fund (Vermont)  

Broader source: Energy.gov [DOE]

The Vermont Sustainable Jobs Fund's Flexible Capital Fund (the Flex Fund) is designed for companies in Vermont's rural areas that are smaller and work on a less-than global scale, offering a...

62

Analysis of operational, institutional and international limitations for alternative fuel vehicles and technologies: Means/methods for implementing changes  

SciTech Connect (OSTI)

This project focused upon the development of an approach to assist public fleet managers in evaluating the characteristics and availability of alternative fuels (AF`s) and alternative fuel vehicles (AFV`s) that will serve as possible replacements for vehicles currently serving the needs of various public entities. Also of concern were the institutional/international limitations for alternative fuels and alternative fuel vehicles. The City of Detroit and other public agencies in the Detroit area were the particular focus for the activities. As the development and initial stages of use of alternative fuels and alternative fuel vehicles proceeds, there will be an increasing need to provide information and guidance to decision-makers regarding differences in requirements and features of these fuels and vehicles. There wig be true differences in requirements for servicing, managing, and regulating. There will also be misunderstanding and misperception. There have been volumes of data collected on AFV`S, and as technology is improved, new data is constantly added. There are not, however, condensed and effective sources of information for public vehicle fleet managers on vehicle and equipment sources, characteristics, performance, costs, and environmental benefits. While theoretical modeling of public fleet requirements has been done, there do not seem to be readily available ``practical``. There is a need to provide the best possible information and means to minimize the problems for introducing the effective use of alternative fuels and alternative fuel vehicles.

Not Available

1992-07-01T23:59:59.000Z

63

Limited Lawn & Limited Commercial  

E-Print Network [OSTI]

Limited Lawn & Ornamental Limited Commercial Landscape Maintenance Review and Exams Limited for Commercial Landscape Maintenance Application: http://www.flaes.org/ pdf/lndspckt.pdf Limited Certification.floridatermitehelp.org or request by phone at 850-921-4177. Limited Lawn & Ornamental/Limited Commercial Landscape Maintenance

Watson, Craig A.

64

Limited Lawn & Limited Commercial  

E-Print Network [OSTI]

Limited Lawn & Ornamental Limited Commercial Landscape Maintenance Review and Exams Limited-921-4177. Limited Lawn & Ornamental/Limited Commercial Landscape Maintenance: Ornamental and Turf Pest Control (SM 7&O/Structural only). See web locations below for applications. Limited Certification for Commercial Landscape

Jawitz, James W.

65

Adaptive tool selection strategies for drilling in flexible manufacturing systems  

E-Print Network [OSTI]

The thesis presents an approach to adaptive decision making strategies to reduce bottlenecks in a drilling operation and to extend tool life. It is an attempt to portray the real drilling system in a typical Flexible Manufacturing System (FMS...

Chander, Karthik Balachandran

2004-09-30T23:59:59.000Z

66

Flexible optical panel  

DOE Patents [OSTI]

A flexible optical panel includes laminated optical waveguides, each including a ribbon core laminated between cladding, with the core being resilient in the plane of the core for elastically accommodating differential movement thereof to permit winding of the panel in a coil.

Veligdan, James T. (Manorville, NY)

2001-01-01T23:59:59.000Z

67

Innovative . Flexible . RegionalInnovative . Flexible . Regional Health Care  

E-Print Network [OSTI]

Executive Master in Innovative . Flexible . RegionalInnovative . Flexible . Regional Health Care Learning Outcomes Health Systems, Policy and Reform - Communicating with Policy Makers - Evidence - Human Resources Management - Data and Decision Making Executive Master in Health Care Leadership (EMHCL

Shihadeh, Alan

68

Hierarchical Part-Based Detection of 3D Flexible Tubes: Application to CT Colonoscopy  

E-Print Network [OSTI]

operations (region growing). Fig. 1. The rectal tubes are flexible and have variable shape and appearance and tube segments to the whole flexible tube. To increase the speed of the algorithm, can- didate parts are generated using a voting strategy. The detected tube segments are combined into a flexible tube using

Barbu, Adrian

69

Wind turbine generator with improved operating subassemblies  

DOE Patents [OSTI]

A wind turbine includes a yaw spring return assembly to return the nacelle from a position to which it has been rotated by yawing forces, thus preventing excessive twisting of the power cables and control cables. It also includes negative coning restrainers to limit the bending of the flexible arms of the rotor towards the tower, and stop means on the rotor shaft to orient the blades in a vertical position during periods when the unit is upwind when the wind commences. A pendulum pitch control mechanism is improved by orienting the pivot axis for the pendulum arm at an angle to the longitudinal axis of its support arm, and excessive creep is of the synthetic resin flexible beam support for the blades is prevented by a restraining cable which limits the extent of pivoting of the pendulum during normal operation but which will permit further pivoting under abnormal conditions to cause the rotor to stall.

Cheney, Jr., Marvin C. (24 Stonepost Rd., Glastonbury, CT 06033)

1985-01-01T23:59:59.000Z

70

Flexible NOx Abatement from Power  

E-Print Network [OSTI]

Flexible NOx Abatement from Power Plants in the Eastern United States* Lin Sun, Mort Webster, Gary: globalchange@mit.edu Website: http://globalchange.mit.edu/ #12;Flexible NOx Abatement from Power Plants

71

Flexible Work Arrangements Manager Guidelines  

E-Print Network [OSTI]

Flexible Work Arrangements Manager Guidelines The Ohio State University Office of Human Resources Page 1 of 2 Flexible Work Arrangement ­ Manager Assessment Issued 07/15/10 When you receive a proposal your manager to review for a decision. Remember that granting a flexible work arrangement may help

Jones, Michelle

72

Flexible cryogenic conduit  

DOE Patents [OSTI]

A flexible and relatively low cost cryogenic conduit is described. The flexible cryogenic conduit of the present invention comprises a first inner corrugated tube with single braided serving, a second outer corrugated tube with single braided serving concentric with the inner corrugated tube, and arranged outwardly about the periphery of the inner corrugated tube and between the inner and outer corrugated tubes: a superinsulation layer; a one half lap layer of polyester ribbon; a one half lap layer of copper ribbon; a spirally wound refrigeration tube; a second one half lap layer of copper ribbon; a second one half lap layer of polyester ribbon; a second superinsulation layer; a third one half lap layer of polyester ribbon; and a spirally wound stretchable and compressible filament.

Brindza, Paul Daniel (Yorktown, VA); Wines, Robin Renee (Norfolk, VA); Takacs, James Joseph (Hayes, VA)

1999-01-01T23:59:59.000Z

73

Measuring the Economic Benefits of Workplace Flexibility  

E-Print Network [OSTI]

Measuring the Economic Benefits of Workplace Flexibility 24th Annual Transportation Research IMPACTS economics · It is tough to measure the CAUSAL relationship between workplace flexibility and economic benefits. #12;In the News... #12;Workforce flexibility defined Workplace flexibility can

Minnesota, University of

74

Flexible composite radiation detector  

DOE Patents [OSTI]

A flexible composite scintillator was prepared by mixing fast, bright, dense rare-earth doped powdered oxyorthosilicate (such as LSO:Ce, LSO:Sm, and GSO:Ce) scintillator with a polymer binder. The binder is transparent to the scintillator emission. The composite is seamless and can be made large and in a wide variety of shapes. Importantly, the composite can be tailored to emit light in a spectral region that matches the optimum response of photomultipliers (about 400 nanometers) or photodiodes (about 600 nanometers), which maximizes the overall detector efficiency.

Cooke, D. Wayne (Santa Fe, NM); Bennett, Bryan L. (Los Alamos, NM); Muenchausen, Ross E. (Los Alamos, NM); Wrobleski, Debra A. (Los Alamos, NM); Orler, Edward B. (Los Alamos, NM)

2006-12-05T23:59:59.000Z

75

Flexible hydropower: boosting energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4:EpitaxialtransatlanticUnified|NorthMathematicianNuclearFlexible

76

Flexible ocean upwelling pipe  

DOE Patents [OSTI]

In an ocean thermal energy conversion facility, a cold water riser pipe is releasably supported at its upper end by the hull of the floating facility. The pipe is substantially vertical and has its lower end far below the hull above the ocean floor. The pipe is defined essentially entirely of a material which has a modulus of elasticity substantially less than that of steel, e.g., high density polyethylene, so that the pipe is flexible and compliant to rather than resistant to applied bending moments. The position of the lower end of the pipe relative to the hull is stabilized by a weight suspended below the lower end of the pipe on a flexible line. The pipe, apart from the weight, is positively buoyant. If support of the upper end of the pipe is released, the pipe sinks to the ocean floor, but is not damaged as the length of the line between the pipe and the weight is sufficient to allow the buoyant pipe to come to a stop within the line length after the weight contacts the ocean floor, and thereafter to float submerged above the ocean floor while moored to the ocean floor by the weight. The upper end of the pipe, while supported by the hull, communicates to a sump in the hull in which the water level is maintained below the ambient water level. The sump volume is sufficient to keep the pipe full during heaving of the hull, thereby preventing collapse of the pipe.

Person, Abraham (Los Alamitos, CA)

1980-01-01T23:59:59.000Z

77

Efficiency limits of quantum well solar cells  

E-Print Network [OSTI]

The quantum well solar cell (QWSC) has been proposed as a flexible means to ensuring current matching for tandem cells. This paper explores the further advantage afforded by the indication that QWSCs operate in the radiative limit because radiative contribution to the dark current is seen to dominate in experimental data at biases corresponding to operation under concentration. The dark currents of QWSCs are analysed in terms of a light and dark current model. The model calculates the spectral response (QE) from field bearing regions and charge neutral layers and from the quantum wells by calculating the confined densities of states and absorption coefficient, and solving transport equations analytically. The total dark current is expressed as the sum of depletion layer and charge neutral radiative and non radiative currents consistent with parameter values extracted from QE fits to data. The depletion layer dark current is a sum of Shockley-Read-Hall non radiative, and radiative contributions. The charge neu...

Connolly, J P; Barnham, K W J; Bushnell, D B; Tibbits, T N D; Roberts, J S

2010-01-01T23:59:59.000Z

78

Flexible cloth seal assembly  

DOE Patents [OSTI]

A seal assembly is described having a flexible cloth seal which includes a shim assemblage surrounded by a cloth assemblage. A first tubular end portion, such as a gas turbine combustor, includes a longitudinal axis and has smooth and spaced-apart first and second surface portions defining a notch there between which is wider at its top than at its bottom and which extends outward from the axis. The second surface portion is outside curved, and a first edge of the cloth seal is positioned in the bottom of the notch. A second tubular end portion, such as a first stage nozzle, is located near, spaced apart from, and coaxially aligned with, the first tubular end portion. The second tubular end portion has a smooth third surface portion which surrounds at least a portion of the first tubular end portion and which is contacted by the cloth seal. 7 figs.

Bagepalli, B.S.; Taura, J.C.; Aksit, M.F.; Demiroglu, M.; Predmore, D.R.

1999-06-29T23:59:59.000Z

79

Flexible swivel connection  

DOE Patents [OSTI]

A flexible swivel boot connector for connecting a first boot shield section to a second boot shield section, both first and second boot sections having openings therethrough, the second boot section having at least two adjacent accordian folds at the end having the opening, the second boot section being positioned through the opening of the first boot section such that a first of the accordian folds is within the first boot section and a second of the accordian folds is outside of the first boot, includes first and second annular discs, the first disc being positioned within and across the first accordian fold, the second disc being positioned within and across the second accordian fold, such that the first boot section is moveably and rigidly connected between the first and second accordian folds of the second boot section.

Hoh, J.C.

1985-02-19T23:59:59.000Z

80

Flexible aerogel composite for mechanical stability and process of fabrication  

DOE Patents [OSTI]

A flexible aerogel and process of fabrication. An aerogel solution is mixed with fibers in a mold and allowed to gel. The gel is then processed by supercritical extraction, or by air drying, to produce a flexible aerogel formed to the shape of the mold. The flexible aerogel has excellent thermal and acoustic properties, and can be utilized in numerous applications, such as for energy absorption, insulation (temperature and acoustic), to meet the contours of aircraft shapes, and where space is limited since an inch of aerogel is a 4-5 times better insulator than an inch of fiberglass. The flexible aerogel may be of an inorganic (silica) type or an organic (carbon) type, but containing fibers, such as glass or carbon fibers.

Coronado, Paul R. (Livermore, CA); Poco, John F. (Livermore, CA)

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Flexible aerogel composite for mechanical stability and process of fabrication  

DOE Patents [OSTI]

A flexible aerogel and process of fabrication. An aerogel solution is mixed with fibers in a mold and allowed to gel. The gel is then processed by supercritical extraction, or by air drying, to produce a flexible aerogel formed to the shape of the mold. The flexible aerogel has excellent thermal and acoustic properties, and can be utilized in numerous applications, such as for energy absorption, insulation (temperature and acoustic), to meet the contours of aircraft shapes, and where space is limited since an inch of aerogel is a 4-5 times better insulator than an inch of fiberglass. The flexible aerogel may be of an inorganic (silica) type or an organic (carbon) type, but containing fibers, such as glass or carbon fibers.

Coronado, Paul R. (Livermore, CA); Poco, John F. (Livermore, CA)

2000-01-01T23:59:59.000Z

82

Flexible aerogel composite for mechanical stability and process of fabrication  

SciTech Connect (OSTI)

A flexible aerogel and process of fabrication are disclosed. An aerogel solution is mixed with fibers in a mold and allowed to gel. The gel is then processed by supercritical extraction, or by air drying, to produce a flexible aerogel formed to the shape of the mold. The flexible aerogel has excellent thermal and acoustic properties, and can be utilized in numerous applications, such as for energy absorption, insulation (temperature and acoustic), to meet the contours of aircraft shapes, and where space is limited since an inch of aerogel is a 4--5 times better insulator than an inch of fiberglass. The flexible aerogel may be of an inorganic (silica) type or an organic (carbon) type, but containing fibers, such as glass or carbon fibers.

Coronado, P.R.; Poco, J.F.

1999-10-26T23:59:59.000Z

83

Flexible aerogel composite for mechanical stability and process of fabrication  

SciTech Connect (OSTI)

A flexible aerogel and process of fabrication are disclosed. An aerogel solution is mixed with fibers in a mold and allowed to gel. The gel is then processed by supercritical extraction, or by air drying, to produce a flexible aerogel formed to the shape of the mold. The flexible aerogel has excellent thermal and acoustic properties, and can be utilized in numerous applications, such as for energy absorption, insulation (temperature and acoustic), to meet the contours of aircraft shapes, and where space is limited since an inch of aerogel is a 4--5 times better insulator than an inch of fiberglass. The flexible aerogel may be of an inorganic (silica) type or an organic (carbon) type, but containing fibers, such as glass or carbon fibers.

Coronado, P.R.; Poco, J.F.

2000-07-11T23:59:59.000Z

84

Rolling-cuff flexible bellows  

DOE Patents [OSTI]

A flexible connector apparatus used to join two stiff non-deformable members, such as piping, is described. The apparatus is provided with one or more flexible sections or assemblies each utilizing a bellows of a rolling cuff type connected between two ridge members, with the bellows being supported by a back-up ring, such that only the curved end sections of the bellows are unsupported. Thus, the bellows can be considered as being of a tube-shaped configuration and thus have high pressure resistance. The components of the flexible apparatus are sealed or welded one to another such that it is fluid tight.

Lambert, D.R.

1982-09-27T23:59:59.000Z

85

Metamaterial flexible sheets could transform optics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Metamaterial flexible sheets could transform optics Metamaterial flexible sheets could transform optics Advances would boost security screening systems, infrared thermal cameras,...

86

Photocatalytic reactor with flexible supports  

DOE Patents [OSTI]

Organic pollutants and bioaerosols in a gaseous stream are oxidized by exposure to light (e.g., UV light) in the presence of semiconductor catalyst particles or coatings supported on flexible strips suspended in the gaseous stream. 3 figs.

Jacoby, W.A.; Blake, D.M.

1995-09-12T23:59:59.000Z

87

ENVIRONMENTAL ASSESSMENT/REGULATORY IMPACT REVIEW/ FINAL REGULATORY FLEXIBILITY ANALYSIS  

E-Print Network [OSTI]

ENVIRONMENTAL ASSESSMENT/REGULATORY IMPACT REVIEW/ FINAL REGULATORY FLEXIBILITY ANALYSIS Amendment and Need The purpose of the non-AFA crab sideboard limits was to prevent vessels with crab QS from paper of all GOA sideboards for non-American Fisheries Act (AFA) crab vessels. In April 2007

88

FLEXIBLE RECONCILIATION OF XML DOCUMENTS IN ASYNCHRONOUS EDITING  

E-Print Network [OSTI]

management, operational transformation Abstract: As XML documents are increasingly being used in a wide appropriate support for the management of conflicting changes performed in parallel on XML documentsFLEXIBLE RECONCILIATION OF XML DOCUMENTS IN ASYNCHRONOUS EDITING Claudia-Lavinia Ignat and G

Boyer, Edmond

89

Flexible programmable logic module  

DOE Patents [OSTI]

The circuit module of this invention is a VME board containing a plurality of programmable logic devices (PLDs), a controlled impedance clock tree, and interconnecting buses. The PLDs are arranged to permit systolic processing of a problem by offering wide data buses and a plurality of processing nodes. The board contains a clock reference and clock distribution tree that can drive each of the PLDs with two critically timed clock references. External clock references can be used to drive additional circuit modules all operating from the same synchronous clock reference.

Robertson, Perry J. (Albuquerque, NM); Hutchinson, Robert L. (Albuquerque, NM); Pierson, Lyndon G. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

90

Thermal-Hydraulic Bases for the Safety Limits and Limiting Safety System Settings for HFIR Operation at 100 MW and 468 psig Primary Pressure, Using Specially Selected Fuel Elements  

SciTech Connect (OSTI)

This report summarizes thermal hydraulic analyses performed to support HFIR operation at 100 MW and 468 psig pressure using specially selected fuel elements. The analyses were performed with the HFIR steady state heat transfer code, originally developed during HFIR design. This report addresses the increased core heat removal capability which can be achieved in fuel elements having coolant channel thicknesses that exceed the minimum requirements of the HFIR fuel fabrication specifications. Specific requirements for the minimum value of effective uniform as-built coolant channel thickness are established for fuel elements to be used at 100 MW. The burnout correlation currently used in the steady-state heat transfer code was also compared with more recent experimental results for stability of high-velocity flow in narrow heated channels, and the burnout correlation was found to be conservative with respect to flow stability at typical HFIR hot channel exit conditions at full power.

Rothrock, R.B.

1998-09-01T23:59:59.000Z

91

Office of Enterprise Assessments Operational Awareness Record for the Waste Isolation Pilot Plant Limited Review of Engineering Configuration Management - March 2015  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSales LLC OrderEfficiencyOceanOctober XX,/2012noteOperational(EA)

92

A flexible control system for flexible manufacturing systems  

E-Print Network [OSTI]

.................................................................................................................. 157 Table 94 PartIndex Fields.................................................................................................................... 157 Table 95 PNArc Fields... into orchestrated flexible robust systems does not.? Gowan and Mathieu (1996) found the major problems with FMSes were associated with the information flow and control subsystem of the FMS. Liu and Zhang (1998) observe that software to carry out integrated...

Scott, Wesley Dane

2004-09-30T23:59:59.000Z

93

Tunable Infrared Emission From Printed Colloidal Quantum Dot/Polymer Composite Films on Flexible Substrates  

E-Print Network [OSTI]

A simple and robust device structure for a flexible, multicolor infrared (IR) display is described. The display operates by optical downconversion of AC-driven blue phosphor electroluminescence using different-sized, ...

Panzer, Matthew J.

94

Flexible ultrasonic pipe inspection apparatus  

DOE Patents [OSTI]

Pipe crawlers, pipe inspection {open_quotes}rabbits{close_quotes} and similar vehicles are widely used for inspecting the interior surfaces of piping systems, storage tanks and process vessels for damaged or flawed structural features. This paper describes the design of a flexible, modular ultrasonic pipe inspection apparatus.

Jenkins, C.F.; Howard, B.D.

1994-01-01T23:59:59.000Z

95

Analysis of operational, institutional and international limitations for alternative fuel vehicles and technologies: Means/methods for implementing changes. [Public fleet groups--information needs  

SciTech Connect (OSTI)

This project focused upon the development of an approach to assist public fleet managers in evaluating the characteristics and availability of alternative fuels (AF's) and alternative fuel vehicles (AFV's) that will serve as possible replacements for vehicles currently serving the needs of various public entities. Also of concern were the institutional/international limitations for alternative fuels and alternative fuel vehicles. The City of Detroit and other public agencies in the Detroit area were the particular focus for the activities. As the development and initial stages of use of alternative fuels and alternative fuel vehicles proceeds, there will be an increasing need to provide information and guidance to decision-makers regarding differences in requirements and features of these fuels and vehicles. There wig be true differences in requirements for servicing, managing, and regulating. There will also be misunderstanding and misperception. There have been volumes of data collected on AFV'S, and as technology is improved, new data is constantly added. There are not, however, condensed and effective sources of information for public vehicle fleet managers on vehicle and equipment sources, characteristics, performance, costs, and environmental benefits. While theoretical modeling of public fleet requirements has been done, there do not seem to be readily available practical''. There is a need to provide the best possible information and means to minimize the problems for introducing the effective use of alternative fuels and alternative fuel vehicles.

Not Available

1992-07-01T23:59:59.000Z

96

Gas deliverability: Flexibility within the system  

SciTech Connect (OSTI)

This paper presents the text of my comments to the national conference on Meeting the Challenges of the New Energy Industry: The Driving Forces Facing Electric Power Generators and the Natural Gas Industry. The F.E.R.C. gas tariffs and operational characteristics of the various gas pipeline systems contain numerous mechanisms and provide flexibility to their shippers. Pipeline customers are empowered with the ability to maximize their supply portfolio by utilizing the appropriate blend of transportation and storage services that best fits their demand needs. I have presented a brief overview of supply availability, seven topics that can enhance assurance of system delivery and an update on The Natural Gas Council`s Electric Generation Task Force.

Tom, D. [Associated Power Services, Inc., Houston, TX (United States)

1995-12-31T23:59:59.000Z

97

Evaluating flexibility in railroad construction projects  

E-Print Network [OSTI]

This thesis aims to valuate flexibilities in a large-scale railroad construction project. In general, a railroad construction project involves a large amount of flexibilities due to its long construction period and conflicts ...

Oh, Choong Ryun, 1972-

2005-01-01T23:59:59.000Z

98

ULTRA BARRIER TOPSHEET (UBT) FOR FLEXIBLE PHOTOVOLTAICS  

SciTech Connect (OSTI)

This slide-show presents 3M photovoltaic-related products, particularly flexible components. Emphasis is on the 3M Ultra Barrier Solar Films. Topics covered include reliability and qualification testing and flexible photovoltaic encapsulation costs.

DeScioli, Derek

2013-06-01T23:59:59.000Z

99

Flexible Transmission in the Smart Grid  

E-Print Network [OSTI]

Planning . 102 vi Transmission Line Maintenance Scheduling 103 Just-in-time Transmission 103 Flexible Transmission in the Smart Grid

Hedman, Kory Walter

2010-01-01T23:59:59.000Z

100

Quantifying flexibility in the operationally responsive space paradigm  

E-Print Network [OSTI]

Designing complex space systems that will deliver value in the presence of an uncertain future is difficult. As space system lifetimes are now measured in decades, the systems face increased risk from uncertain future ...

Viscito, Lauren

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Shaft Siting and Configuration for Flexible Operating Mode  

SciTech Connect (OSTI)

The purpose of this document as stated in the ''Technical Work Plan for Subsurface Design Section FY 01 Work Activities'' (CRWMS M&O 2001a, pg. 14) is to review and evaluate the most current concepts for shaft siting and configuration. The locations of the shaft sites will be evaluated in reference to the overall subsurface ventilation layout shown in Figure 1. The scope will include discussions on pad size requirements, shaft construction components such as collars, shaft stations, sumps, ground support and linings, head frames, fan ducting and facility equipping. In addition to these, shaft excavation methodologies and integration with the overall subsurface construction schedule will be described. The Technical Work Plan (TWP), (CRWMS M&O 2001a), for this document has been prepared in accordance with AP-2.21Q, ''Quality Determinations and Planning for Scientific, Engineering and Regulatory Compliance Activities''. This document will be prepared in accordance with AP-3.10Q, ''Analysis and Models''. This document contributes to Site Recommendation (SR). The intended use of this document is to provide an analysis for shaft siting and configuration criteria for subsequent construction. This document identifies preliminary design concepts that should not be used for procurement, fabrication, or construction.

Robert Boutin

2001-08-02T23:59:59.000Z

102

Flexible helical-axis stellarator  

DOE Patents [OSTI]

An 1=1 helical winding which spirals about a conventional planar, circular central conductor of a helical-axis stellarator adds a significant degree of flexibility by making it possible to control the rotational transform profile and shear of the magnetic fields confining the plasma in a helical-axis stellarator. The toroidal central conductor links a plurality of toroidal field coils which are separately disposed to follow a helical path around the central conductor in phase with the helical path of the 1=1 winding. This coil configuration produces bean-shaped magnetic flux surfaces which rotate around the central circular conductor in the same manner as the toroidal field generating coils. The additional 1=1 winding provides flexible control of the magnetic field generated by the central conductor to prevent the formation of low-order resonances in the rotational transform profile which can produce break-up of the equilibrium magnetic surfaces. Further, this additional winding can deepen the magnetic well which together with the flexible control provides increased stability.

Harris, Jeffrey H. (Oak Ridge, TN); Hender, Timothy C. (Abingdon, GB2); Carreras, Benjamin A. (Oak Ridge, TN); Cantrell, Jack L. (Oak Ridge, TN); Morris, Robert N. (Oak Ridge, TN)

1988-01-01T23:59:59.000Z

103

Flexible  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

properties (2-5). In 2011, our group reported on a new family of 2D early transition metal carbides, which combined metallic conductivity and hydrophilic surfaces (6). This...

104

Exploring the mechanisms critical to the operation of metal face seals through modeling and experiments  

E-Print Network [OSTI]

This thesis aims to explore operation mechanisms of a special type of mechanical face seals: the flexible metal-to-metal face seal (FMMFS). Unique features of the FMMFS include much more flexibility in the circumferential ...

Wang, Yong, Ph. D. Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics

2008-01-01T23:59:59.000Z

105

Evaluation of traffic operations at diamond interchanges using advanced actuated control  

E-Print Network [OSTI]

This thesis documents an operational analysis of ographics. advanced actuated traffic control at signalized diamond interchanges. The study attempts to determine the benefits a "flexible'' phasing strategy provides to the interchange. Flexible...

Koonce, Peter John Vincent

1998-01-01T23:59:59.000Z

106

Thermodynamics of tubelike flexible polymers  

E-Print Network [OSTI]

In this work we present the general phase behavior of short tubelike flexible polymers. The geometric thickness constraint is implemented through the concept of the global radius of curvature. We use sophisticated Monte Carlo sampling methods to simulate small bead-stick polymer models with Lennard-Jones interaction among non-bonded monomers. We analyze energetic fluctuations and structural quantities to classify conformational pseudophases. We find that the tube thickness influences the thermodynamic behavior of simple tubelike polymers significantly, i.e., for given temperature, the formation of secondary structures strongly depends on the tube thickness.

Thomas Vogel; Thomas Neuhaus; Michael Bachmann; Wolfhard Janke

2009-07-17T23:59:59.000Z

107

Flexible Energy | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds" | National Hansen 1 ,Flexible Fuel

108

A Flexible Architecture for Statistical Learning and Data Mining from System Log Streams  

E-Print Network [OSTI]

A Flexible Architecture for Statistical Learning and Data Mining from System Log Streams Wei Xu. Human operators monitoring the sys- tem use the log data and their experience to detect failures information than the operators can discern. The data might be used to predict that a particular machine

Xu, Wei

109

Flexible network wireless transceiver and flexible network telemetry transceiver  

DOE Patents [OSTI]

A transceiver for facilitating two-way wireless communication between a baseband application and other nodes in a wireless network, wherein the transceiver provides baseband communication networking and necessary configuration and control functions along with transmitter, receiver, and antenna functions to enable the wireless communication. More specifically, the transceiver provides a long-range wireless duplex communication node or channel between the baseband application, which is associated with a mobile or fixed space, air, water, or ground vehicle or other platform, and other nodes in the wireless network or grid. The transceiver broadly comprises a communication processor; a flexible telemetry transceiver including a receiver and a transmitter; a power conversion and regulation mechanism; a diplexer; and a phased array antenna system, wherein these various components and certain subcomponents thereof may be separately enclosed and distributable relative to the other components and subcomponents.

Brown, Kenneth D. (Grain Valley, MO)

2008-08-05T23:59:59.000Z

110

Flexible Pressure Sensors: Modeling and Experimental Characterization  

E-Print Network [OSTI]

Flexible capacitive pressure sensors fabricated with nanocomposites were experimentally characterized and results compared with simulations from analytical modeling. Unlike traditional diaphragm silicon pressure sensors, ...

Viana, J.C.

111

Regenerator Location Problem in Flexible Optical Networks  

E-Print Network [OSTI]

Nov 22, 2014 ... Abstract: In this study we introduce the regenerator location problem in flexible optical networks (RLP-FON). With a given traffic demand,...

BARIS YILDIZ

2014-11-22T23:59:59.000Z

112

Flexible interconnects for fuel cell stacks  

DOE Patents [OSTI]

An interconnect that facilitates electrical connection and mechanical support with minimal mechanical stress for fuel cell stacks. The interconnects are flexible and provide mechanically robust fuel cell stacks with higher stack performance at lower cost. The flexible interconnects replace the prior rigid rib interconnects with flexible "fingers" or contact pads which will accommodate the imperfect flatness of the ceramic fuel cells. Also, the mechanical stress of stacked fuel cells will be smaller due to the flexibility of the fingers. The interconnects can be one-sided or double-sided.

Lenz, David J.; Chung, Brandon W.; Pham, Ai Quoc

2004-11-09T23:59:59.000Z

113

A flexible, highly stable electrochemical scanning probe microscope for nanoscale studies at the solid-liquid interface  

E-Print Network [OSTI]

low-noise measurements in ambient, in situ, and electrochemical environments. II. DESIGNA flexible, highly stable electrochemical scanning probe microscope for nanoscale studies at the solid-liquid interface, specifically in electrolyte environments. Quantification of system noise limits

Gimzewski, James

114

An Annotated Bibliography of High-Voltage Direct-Current Transmission and Flexible AC Transmission (FACTS) Devices, 1991-1993.  

SciTech Connect (OSTI)

References are contained for HVDC systems, converter stations and components, overhead transmission lines, cable transmission, system design and operations, simulation of high voltage direct current systems, high-voltage direct current installations, and flexible AC transmission system (FACTS).

Litzenberger, Wayne; Lava, Val

1994-08-01T23:59:59.000Z

115

Catalytic Combustor for Fuel-Flexible Turbine  

SciTech Connect (OSTI)

Under the sponsorship of the U.S. Department of Energy's National Energy Technology Laboratory, Siemens Westinghouse is conducting a three-year program to develop an ultra low NOx, fuel flexible catalytic combustor for gas turbine application in IGCC. The program is defined in three phases: Phase 1-Implementation Plan, Phase 2-Validation Testing and Phase 3-Field Testing. The Phase 1 program has been completed. Phase II was initiated in October 2004. In IGCC power plants, the gas turbine must be capable of operating on syngas as a primary fuel and an available back-up fuel such as natural gas. In this program the Rich Catalytic Lean (RCL{trademark}) technology is being developed as an ultra low NOx combustor. In this concept, ultra low NOx is achieved by stabilizing a lean premix combustion process by using a catalytic reactor to react part of the fuel, increasing the fuel/air mixture temperature. In Phase 1, the feasibility of the catalytic concept for syngas application has been evaluated and the key technology issues identified. In Phase II the catalytic concept will be demonstrated through subscale testing. Phase III will consist of full-scale combustor basket testing on natural gas and syngas.

W. R. Laster; E. Anoshkina; P. Szedlacsek

2006-03-31T23:59:59.000Z

116

PWR core monitoring and simulation during load follow operation  

SciTech Connect (OSTI)

This paper presents a new operation core support system developed for pressurized water reactors. This system provides an enhanced understanding of the operating core with significant benefits in operational flexibility. It also permits evaluation of alternatives and specific situations that allows for enhanced operation of the unit, which provides benefits in power capability and minimizes potential operational issues.

Beard, C. (Westinghouse Electric Corp., Pittsburgh, PA (USA). Commercial Nuclear Fuel Div.); Winter, M.; Niederer, R. (Commonwealth Edison Co., Zion, IL (USA))

1989-01-01T23:59:59.000Z

117

High-flexibility, noncollapsing lightweight hose  

DOE Patents [OSTI]

A high-flexibility, noncollapsing, lightweight, large-bore, wire-reinforced hose is inside fiber-reinforced PVC tubing that is flexible, lightweight, and abrasion resistant. It provides a strong, kink- and collapse-free conduit for moving large quantities of dangerous fluids, e.g., removing radioactive waste water or processing chemicals.

Williams, David A. (Pittsburgh, PA)

1993-01-01T23:59:59.000Z

118

High-flexibility, noncollapsing lightweight hose  

DOE Patents [OSTI]

A high-flexibility, noncollapsing, lightweight, large-bore, wire-reinforced hose is inside fiber-reinforced PVC tubing that is flexible, lightweight, and abrasion resistant. It provides a strong, kink- and collapse-free conduit for moving large quantities of dangerous fluids, e.g., removing radioactive waste water or processing chemicals.

Williams, D.A.

1993-04-20T23:59:59.000Z

119

Process Flexibility Design in Unbalanced and Asymmetric Networks  

E-Print Network [OSTI]

4 Robust Process Flexibility Design 4.1 Basic Model3 Process Flexibility Design in Unbalanced Networks 3.12.4 Other settings where process flexibility design has been

Deng, Tianhu

2013-01-01T23:59:59.000Z

120

Fuel Flexible Turbine System (FFTS) Program  

SciTech Connect (OSTI)

In this fuel flexible turbine system (FFTS) program, the Parker gasification system was further optimized, fuel composition of biomass gasification process was characterized and the feasibility of running Capstone MicroTurbine(TM) systems with gasification syngas fuels was evaluated. With high hydrogen content, the gaseous fuel from a gasification process of various feed stocks such as switchgrass and corn stover has high reactivity and high flashback propensity when running in the current lean premixed injectors. The research concluded that the existing C65 microturbine combustion system, which is designed for natural gas, is not able to burn the high hydrogen content syngas due to insufficient resistance to flashback (undesired flame propagation to upstream within the fuel injector). A comprehensive literature review was conducted on high-hydrogen fuel combustion and its main issues. For Capstone?s lean premixed injector, the main mechanisms of flashback were identified to be boundary layer flashback and bulk flow flashback. Since the existing microturbine combustion system is not able to operate on high-hydrogen syngas fuels, new hardware needed to be developed. The new hardware developed and tested included (1) a series of injectors with a reduced propensity for boundary layer flashback and (2) two new combustion liner designs (Combustion Liner Design A and B) that lead to desired primary zone air flow split to meet the overall bulk velocity requirement to mitigate the risk of core flashback inside the injectors. The new injector designs were evaluated in both test apparatus and C65/C200 engines. While some of the new injector designs did not provide satisfactory performance in burning target syngas fuels, particularly in improving resistance to flashback. The combustion system configuration of FFTS-4 injector and Combustion Liner Design A was found promising to enable the C65 microturbine system to run on high hydrogen biomass syngas. The FFTS-4 injector was tested in a C65 engine operating on 100% hydrogen and with the redesigned combustion liner - Combustion Liner Design A - installed. The results were promising for the FFTS program as the system was able to burn 100% hydrogen fuel without flashback while maintaining good combustion performance. While initial results have been demonstrated the feasibility of this program, further research is needed to determine whether these results will be repeated with FFTS-4 injectors installed in all injector ports and over a wide range of operating conditions and fuel variations.

None

2012-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

The MSFR as a flexible CR reactor: the viewpoint of safety  

SciTech Connect (OSTI)

In this paper, the possibility has first been discussed of using the liquid-fuelled Molten Salt Fast Reactor (MSFR) as a flexible conversion ratio (CR) reactor without design modification. By tuning the reprocessing rate it is possible to determine the content of fission products in the core, which in turn can significantly affect the neutron economy without incurring in solubility problems. The MSFR can thus be operated as U-233 breeder (CR>1), iso-breeder (CR=1) and burner reactor (CR<1). In particular a 40 year doubling time can be achieved, as well as a considerable Transuranics and MA (minor actinide) burning rate equal to about 150 kg{sub HN}/GWE-yr. The safety parameters of the MSFR have then been evaluated for different fuel cycle strategies. Th use and a softer spectrum combine to give a strong Doppler coefficient, one order of magnitude higher compared to traditional fast reactors (FRs). The fuel expansion coefficient is comparable to the Doppler coefficient and is only mildly affected by core compositions, thus assisting the fuel cycle flexibility of the MSFR. ?eff and generation time are comparable to the case of traditional FRs, if a static fuel is assumed. A notable reduction of ?eff is caused by salt circulation, but a low value of this parameter is a limited concern in the MSFR thanks to the lack of a burnup reactivity swing and of positive feedbacks. A simple approach has also been developed to evaluate the MSFR capabilities to withstand all typical double-fault accidents, for different fuel cycle options.

Fiorina, C.; Cammi, A. [Politecnico di Milano, Via La Masa 34, 20136 Milan (Italy); Franceschini, F. [Westinghouse Electric Company LL, 1000 Westinghouse Dr., Cranberry Township, PA 16066 (United States); Krepel, J. [Paul Scherrer Institut, PSI WEST, 5234 Villigen (Switzerland)

2013-07-01T23:59:59.000Z

122

Flexible Distributed Energy and Water from Waste for the Food...  

Energy Savers [EERE]

Flexible Distributed Energy and Water from Waste for the Food and Beverage Industry - Fact Sheet, 2014 Flexible Distributed Energy and Water from Waste for the Food and Beverage...

123

Flexible Fuel Vehicles: Providing a Renewable Fuel Choice, Vehicle...  

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

Flexible Fuel Vehicles: Providing a Renewable Fuel Choice, Vehicle Technologies Program (VTP) (Fact Sheet) Flexible Fuel Vehicles: Providing a Renewable Fuel Choice, Vehicle...

124

Fuel-Flexible Microturbine and Gasifier System for Combined Heat...  

Broader source: Energy.gov (indexed) [DOE]

Flexible Microturbine and Gasifier System for Combined Heat and Power Fuel-Flexible Microturbine and Gasifier System for Combined Heat and Power Capstone Turbine Corporation, in...

125

Electricity for road transport, flexible power systems and wind...  

Open Energy Info (EERE)

Electricity for road transport, flexible power systems and wind power (Smart Grid Project) Jump to: navigation, search Project Name Electricity for road transport, flexible power...

126

Fuel-Flexible, Low-Emissions Catalytic Combustor for Opportunity...  

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

Flexible, Low-Emissions Catalytic Combustor for Opportunity Fuels Fuel-Flexible, Low-Emissions Catalytic Combustor for Opportunity Fuels This fact sheet provides an overview of the...

127

Flexible Pillared Graphene-Paper Electrodes for High-Performance...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Flexible Pillared Graphene-Paper Electrodes for High-Performance Electrochemical Supercapacitors. Flexible Pillared Graphene-Paper Electrodes for High-Performance Electrochemical...

128

Fuel-Flexible Combustion System for Co-production Plant Applications  

SciTech Connect (OSTI)

Future high-efficiency, low-emission generation plants that produce electric power, transportation fuels, and/or chemicals from fossil fuel feed stocks require a new class of fuel-flexible combustors. In this program, a validated combustor approach was developed which enables single-digit NO{sub x} operation for a future generation plants with low-Btu off gas and allows the flexibility of process-independent backup with natural gas. This combustion technology overcomes the limitations of current syngas gas turbine combustion systems, which are designed on a site-by-site basis, and enable improved future co-generation plant designs. In this capacity, the fuel-flexible combustor enhances the efficiency and productivity of future co-production plants. In task 2, a summary of market requested fuel gas compositions was created and the syngas fuel space was characterized. Additionally, a technology matrix and chemical kinetic models were used to evaluate various combustion technologies and to select two combustor concepts. In task 4 systems analysis of a co-production plant in conjunction with chemical kinetic analysis was performed to determine the desired combustor operating conditions for the burner concepts. Task 5 discusses the experimental evaluation of three syngas capable combustor designs. The hybrid combustor, Prototype-1 utilized a diffusion flame approach for syngas fuels with a lean premixed swirl concept for natural gas fuels for both syngas and natural gas fuels at FA+e gas turbine conditions. The hybrid nozzle was sized to accommodate syngas fuels ranging from {approx}100 to 280 btu/scf and with a diffusion tip geometry optimized for Early Entry Co-generation Plant (EECP) fuel compositions. The swozzle concept utilized existing GE DLN design methodologies to eliminate flow separation and enhance fuel-air mixing. With changing business priorities, a fully premixed natural gas & syngas nozzle, Protoytpe-1N, was also developed later in the program. It did not have the diluent requirements of Prototype-1 and was demonstrated at targeted gas turbine conditions. The TVC combustor, Prototype-2, premixes the syngas with air for low emission performance. The combustor was designed for operation with syngas and no additional diluents. The combustor was successfully operated at targeted gas turbine conditions. Another goal of the program was to advance the status of development tools for syngas systems. In Task 3 a syngas flame evaluation facility was developed. Fundamental data on syngas flame speeds and flame strain were obtained at pressure for a wide range of syngas fuels with preheated air. Several promising reduced order kinetic mechanisms were compared with the results from the evaluation facility. The mechanism with the best agreement was selected for application to syngas combustor modeling studies in Task 6. Prototype-1 was modeled using an advanced LES combustion code. The tools and combustor technology development culminate in a full-scale demonstration of the most promising technology in Task 8. The combustor was operated at engine conditions and evaluated against the various engine performance requirements.

Joel Haynes; Justin Brumberg; Venkatraman Iyer; Jonathan Janssen; Ben Lacy; Matt Mosbacher; Craig Russell; Ertan Yilmaz; Williams York; Willy Ziminsky; Tim Lieuwen; Suresh Menon; Jerry Seitzman; Ashok Anand; Patrick May

2008-12-31T23:59:59.000Z

129

Ideals and flexibility in close relationships  

E-Print Network [OSTI]

Two studies examined the roles that ideal standards aphics. for a romantic partner, and the flexibility of these standards, play in relationships. In the first study, 239 men and women involved in dating relationships were asked to rate themselves...

Campbell, Lorne John

1998-01-01T23:59:59.000Z

130

A flexible design framework for autonomous mowing  

E-Print Network [OSTI]

This work outlines the creation of a flexible design framework for autonomous mowing to meet changing customer needs and functionality across a spectrum of applications from residential areas to sport complexes. The thesis ...

Kraft, Justin (Justin A.)

2011-01-01T23:59:59.000Z

131

Direct transfer of graphene onto flexible substrates  

E-Print Network [OSTI]

In this paper we explore the direct transfer via lamination of chemical vapor deposition graphene onto different flexible substrates. The transfer method investigated here is fast, simple, and does not require an intermediate ...

Araujo, P. T.

132

A flexible system for Olympic villages  

E-Print Network [OSTI]

This thesis suggests a flexible system and its systems approach in constructing Olympic Villages which are used both during and after the Games. A historical overview of ancient Olympia and modern Olympia, as well as a ...

Chung, Se-Hack

1985-01-01T23:59:59.000Z

133

Method of manufacturing flexible metallic photonic band gap structures, and structures resulting therefrom  

DOE Patents [OSTI]

A method of manufacturing a flexible metallic photonic band gap structure operable in the infrared region, comprises the steps of spinning on a first layer of dielectric on a GaAs substrate, imidizing this first layer of dielectric, forming a first metal pattern on this first layer of dielectric, spinning on and imidizing a second layer of dielectric, and then removing the GaAs substrate. This method results in a flexible metallic photonic band gap structure operable with various filter characteristics in the infrared region. This method may be used to construct multi-layer flexible metallic photonic band gap structures. Metal grid defects and dielectric separation layer thicknesses are adjusted to control filter parameters.

Gupta, Sandhya (Bloomington, MN); Tuttle, Gary L. (Ames, IA); Sigalas, Mihail (Ames, IA); McCalmont, Jonathan S. (Ames, IA); Ho, Kai-Ming (Ames, IA)

2001-08-14T23:59:59.000Z

134

Mathematical optimization of a flexible job shop problem including preventive maintenance and  

E-Print Network [OSTI]

1 Mathematical optimization of a flexible job shop problem including preventive maintenance as the scheduling problem includes limited availability of fixtures and preventive maintenance planning periodicity, a number of preventive maintenance activities need to be carried out in some of the resources

Patriksson, Michael

135

UHF Solar Powered Active Oscillator Antenna on Low Cost Flexible Substrate for Wireless Identification Applications  

E-Print Network [OSTI]

UHF Solar Powered Active Oscillator Antenna on Low Cost Flexible Substrate for Wireless nature of the circuit and providing operational autonomy by harvesting solar power without affecting, solar power harvesting. I. INTRODUCTION The increasing use of RFIDs and wireless sensor networks

Tentzeris, Manos

136

The Control Algorithm Enabling Natural Physical Interaction with Humanoid Robot Arm Having Joint Flexibility  

E-Print Network [OSTI]

Joint Flexibility Dzmitry Tsetserukou, Naoki Kawakami, and Susumu Tachi Department of Information_teterukov@ipc.i.u-tokyo.ac.jp) Abstract: The paper is concentrated on control of humanoid robot arm intended for operation in unstructured human being-environment. A variable impedance control strategy was elaborated to increase the robot

Tachi, Susumu

137

Infrared limit in external field scattering  

E-Print Network [OSTI]

Scattering of electrons/positrons by external classical electromagnetic wave packet is considered in infrared limit. In this limit the scattering operator exists and produces physical effects, although the scattering cross-section is trivial.

Andrzej Herdegen

2012-05-17T23:59:59.000Z

138

Reconstruction from a flexible number of projections in cone-beam computed tomography via active shape models  

E-Print Network [OSTI]

Reconstruction from a flexible number of projections in cone-beam computed tomography via active, and limited view computed tomography. 1. INTRODUCTION In recent years, cone beam computed tomography (CBCT a limited set of projections. Evaluations were performed using simulations with Shepp-Logan phantoms

Corso, Jason J.

139

Flexible, secure agent development framework  

DOE Patents [OSTI]

While an agent generator is generating an intelligent agent, it can also evaluate the data processing platform on which it is executing, in order to assess a risk factor associated with operation of the agent generator on the data processing platform. The agent generator can retrieve from a location external to the data processing platform an open site that is configurable by the user, and load the open site into an agent substrate, thereby creating a development agent with code development capabilities. While an intelligent agent is executing a functional program on a data processing platform, it can also evaluate the data processing platform to assess a risk factor associated with performing the data processing function on the data processing platform.

Goldsmith; Steven Y. (Rochester, MN)

2009-04-07T23:59:59.000Z

140

Flexible shaft and roof drilling system  

DOE Patents [OSTI]

A system for drilling holes in the roof of a mine has a flexible shaft with a pair of oppositely wound, coaxial flat bands. One of the flat bands defines an inner spring that is wound right handed into a helical configuration, adjacent convolutions being in nesting relationship to one another. The other flat band defines an outer spring that is wound left handed into a helical configuration about the inner band, adjacent convolutions being nesting relationship with one another. A transition member that is configured to hold a rock bit is mounted to one end of the flexible shaft. When torque and thrust are applied to the flexible shaft by a driver, the inner spring expands outwardly and the outer spring contracts inwardly to form a relatively rigid shaft.

Blanz, John H. (Carlisle, MA)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Superconducting Cable Having A Flexible Former  

DOE Patents [OSTI]

In order to provide a flexible oxide superconducting cable which is reduced in AC loss, tape-shaped superconducting wires covered with a stabilizing metal are wound on a flexible former. The superconducting wires are preferably laid on the former at a bending strain of not more than 0.2%. In laying on the former, a number of tape-shaped superconducting wires are laid on a core member in a side-by-side manner, to form a first layer. A prescribed number of tape-shaped superconducting wires are laid on top of the first layer in a side-by-side manner, to form a second layer. The former may be made of a metal, plastic, reinforced plastic, polymer, or a composite and provides flexibility to the superconducting wires and the cable formed therewith.

Hughey, Raburn L. (Franklin, GA); Sinha, Uday K. (Carrollton, GA); Reece, David S. (Carrollton, GA); Muller, Albert C. (Eidson, TN)

2005-08-30T23:59:59.000Z

142

Operations and compositions in transrecursive operators  

SciTech Connect (OSTI)

The present study is a continuation of a study focusing on introduction and analysis of operations on transrecursive operators, which are similar to the operators considered in the theory of algorithms. Such operations may be standard product of algorithms) or special ({alpha}-disjunction and {alpha}-iteration. In some respects, these operations in the class of transrecursive operators are similar to their traditional analogs. In other respects, however, they are essentially different. For instance, they may have different types and modes. Specific features of operations on transrecursive operators are attributable to explicit omission of some restrictions on their construction compared with the construction of algorithms. The standard approaches to mathematical modeling of the concept of algorithm assume a number of essential restrictions. Specifically, they assume finiteness of (1) the input data arriving during a finite time interval; (2) the list of rules underlying the operations of the algorithm; (3) the transformations executed by a single operation; (4) the description of each rule; (5) the time to execute one operation; (6) the time to execute one operation; (7) the number of cycles that the algorithm executes in order to realize the mapping. In application to Turing machines, these restrictions imply finiteness of the initial word, finiteness of the command table of the read head, and ultimate stopping when the result is obtained after finitely many steps. Various classes of transrecursive operators are constructed by dropping various combinations of the {open_quotes}finiteness{close_quotes} restrictions. Two classes of transrecursive operators - the limit (inductive) Turing machines and transalgorithms - have been obtained by dropping respectively the assumption of finiteness of the number of execution cycles and the assumption of finiteness of the list of rules.

Burgin, M.S.; Borodyanskii, Yu.M.

1995-03-01T23:59:59.000Z

143

25 Year Lifetime for Flexible Buildings Integrated Photovoltaics  

SciTech Connect (OSTI)

Although preliminary proof-of-principle of the efficacy of barrier materials and processes, first developed by Battelle at PNNL and commercialized by Vitex, has been demonstrated at the laboratory scale, there are several challenges to the practical commercial implementation of these developments in the Buildings Integrated Photovoltaics (BIPV) market. Two important issues that are addressed in this project are identifying a low cost substrate material that can survive in the outside environment (rain, heat, dust, hail, etc.) for 25 years and developing an encapsulation method for the photovoltaic (PV) cells that can meet the required barrier performance without driving the cost of the total barrier package out of range (remaining below $3.00/Wp). Without these solutions, current encapsulation technologies will limit the use of PV for BIPV applications. Flexible, light-weight packaging that can withstand 25 years in the field is required for a totally flexible integrated PV package. The benefit of this research is to make substantial progress in the development of a cost-effective, viable thin film barrier package which will be a critical enabling technology to meet the Solar America Initiative cost and device reliability goals, and to make photovoltaics (PV) more cost-competitive with electricity generated using fossil fuels. Increased PV installations will enable increased US electrical capacity and reduce dependence on imported oil through increased utilization of a widely abundant source of renewable energy (sunlight).

Gross, Mark E.

2010-07-10T23:59:59.000Z

144

Flexible Bio-battery February 7, 2013  

E-Print Network [OSTI]

Flexible Bio-battery Materials Thursday February 7, 2013 12:30pm - 1:30pm Talk by Dr. W.H. Katie at Washington State University (WSU), and 2012 International Visiting Research Scholar with the Peter Wall elastic and superior ionic conductive solid polymer electrolytes (SPEs) are prerequisite

Handy, Todd C.

145

Flexible hydrogel-based functional composite materials  

DOE Patents [OSTI]

A composite having a flexible hydrogel polymer formed by mixing an organic phase with an inorganic composition, the organic phase selected from the group consisting of a hydrogel monomer, a crosslinker, a radical initiator, and/or a solvent. A polymerization mixture is formed and polymerized into a desired shape and size.

2013-10-08T23:59:59.000Z

146

WAGES, FLEXIBLE EXCHANGE RATES, AND MACROECONOMIC POLICY*  

E-Print Network [OSTI]

WAGES, FLEXIBLE EXCHANGE RATES, AND MACROECONOMIC POLICY* JEFFREY SACHS In an open economy with a floaLing exchange rate, the efficacy of fiscal and monetary policy depends fundamentally on the wage rate depreciation, while fiscal expansion has no output effect. These results hold only when real wages

147

Health Care and Dependent Care Flexible  

E-Print Network [OSTI]

of money that is withheld from your pay on a pre-tax basis. Note: Health Care Reform extends medical FSAHealth Care and Dependent Care Flexible Spending Accounts Discovery Benefits, Inc. (866) 451 for certain health care and child care expenses with pre-tax dollars. FSA's may allow you to save money

148

The Flexible Display Center and Universal Display Corporation Produce Flexible, Full-Color AMOLED Prototype Displays  

E-Print Network [OSTI]

diode (AMOLED) display prototypes using the Center's bond/de-bond manufacturing/de-bond manufacturing process represents a tremendous step forward in the advancement of flexible Display's phosphorescent red, green and blue OLED materials, which have already

Rhoads, James

149

Organism of options : a design strategy for flexible space  

E-Print Network [OSTI]

The need for "flexibility" of architecture has been increasing as recent social demands are rapidly changing. However, many buildings designed in the name of flexibility are blocky, boring, and actually quite inflexible ...

Kim, Young-Ju, M. Arch. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

150

Flexibility in Aerospace and Automotive Component Manufacturing Systems  

E-Print Network [OSTI]

Flexibility in Aerospace and Automotive Component Manufacturing Systems: Practice, Strategy Supervisor #12;2 #12;Flexibility in Aerospace and Automotive Component Manufacturing Systems: Practice Traditionally, parts fabrication in the aerospace and automotive industries has been associated with a number

de Weck, Olivier L.

151

Supporting Flexible Business Processes with a Progression Model  

E-Print Network [OSTI]

Supporting Flexible Business Processes with a Progression Model Nicole Stavness Department with information systems to contend with changing business processes, and to support diverse workflow. Model that support flexible business processes. The progression model tracks a user's interaction when using

Schneider, Kevin A.

152

Enabling manufacturing flexibility issue resolution in advanced vehicle development  

E-Print Network [OSTI]

Manufacturing Flexibility is a broad term used to describe a metric that can be measured in many different ways. Current industry experts agree that Flexibility is one of the key measures that will help the automotive ...

Tomlin, Grace C. (Grace Catherine)

2008-01-01T23:59:59.000Z

153

High temperature superconducting fault current limiter  

DOE Patents [OSTI]

A fault current limiter for an electrical circuit is disclosed. The fault current limiter includes a high temperature superconductor in the electrical circuit. The high temperature superconductor is cooled below its critical temperature to maintain the superconducting electrical properties during operation as the fault current limiter. 15 figs.

Hull, J.R.

1997-02-04T23:59:59.000Z

154

Functional Flexibility in the Regulation of Src Family Kinases /  

E-Print Network [OSTI]

flexible or disordered protein lacks a peak and will eithercurve, whereas extended proteins lack a peak and will either

Jamros, Michael Alan

2013-01-01T23:59:59.000Z

155

Nonlinear subcritical magnetohydrodynamic beta limit  

SciTech Connect (OSTI)

Published gyrokinetic simulations have had difficulty operating beyond about half the ideal magnetohydrodynamic (MHD) critical beta limit with stationary and low transport levels in some well-established reference cases. Here it is demonstrated that this limitation is unlikely due to numerical instability, but rather appears to be a nonlinear subcritical MHD beta limit[R. E. Waltz, Phys. Rev. Lett. 55, 1098 (1985)] induced by the locally enhanced pressure gradients from the diamagnetic component of the nonlinearly driven (zero frequency) zonal flows. Strong evidence that the zonal flow corrugated pressure gradient profiles can act as a MHD-like beta limit unstable secondary equilibrium is provided. It is shown that the addition of sufficient ExB shear or operation closer to drift wave instability threshold, thereby reducing the high-n drift wave turbulence nonlinear pumping of the zonal flows, can allow the normal high-n ideal MHD beta limit to be reached with low transport levels. Example gyrokinetic simulations of experimental discharges are provided: one near the high-n beta limit reasonably matches the low transport levels needed when the high experimental level of ExB shear is applied; a second experimental example at moderately high beta appears to be limited by the subcritical beta.

Waltz, R. E. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)

2010-07-15T23:59:59.000Z

156

Flexible Electronics New Devices on Nearly Any Type of Substrate  

E-Print Network [OSTI]

Flexible Electronics ­ New Devices on Nearly Any Type of Substrate by Angelika Boeer published: 2011-07-06 Flexible electronic devices ­ this is a fascinating topic and becoming more and more such as display systems, flexible and stretchable electronics, or other, no-waver-based devices. Sign up

Rogers, John A.

157

The effects of ankle compliance and flexibility on ankle sprains  

E-Print Network [OSTI]

The effects of ankle compliance and flexibility on ankle sprains IAN C. WRIGHT, RICHARD R. NEPTUNE. J VAN DEN BOGERT, and B. M. NIGG. The effects of ankle compliance and flexibility on ankle sprains was to examine the influence of changes in subtalar joint flexibility and compliance on ankle sprain occurrence

158

Flexible procurement strategies smooth price spikes  

SciTech Connect (OSTI)

Pace Global Energy Services has been predicting for some time that the recent peaks in spot coal prices were not sustainable and this has been borne out. The latest available data on coal supply and demand fundamental suggest that spot coal prices may decline even more rapidly than previously forecast. Price volatility over the last five years suggests that a flexible procurement strategy that is well adapted to volatile market conditions may be just as important as knowledge of market fundamentals. 3 figs.

Gaalaas, T. [Pace Global Energy Services LLC (United States)

2006-12-15T23:59:59.000Z

159

Identification and open loop control of a simulated flexible space structure experimentally verified with a real flexible structure  

E-Print Network [OSTI]

IDENTIFICATION A. ND OPEN LOOP CONTROL OF A SIMULATED FLEXIBLE SPACE STRUCTURE EXPERIMENTALLY VERIFIED WITH A REAL FLEXIBLE STRUCTURE A Thesis by STEPHEN ERIC MORGAN Submitted to the Office of Graduate Studies of Texas ASSAM University... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1989 Major Subject: Aerospace Engineering IDENTIFICATION AND OPEN LOOP CONTROL OF A SIMULATED FLEXIBLE SPACE STRUCTURE EXPERIMENTALLY VERIFIED WITH A REAL FLEXIBLE...

Morgan, Stephen Eric

1989-01-01T23:59:59.000Z

160

How many objects can you track?: Evidence for a resource-limited attentive tracking mechanism  

E-Print Network [OSTI]

How many objects can you track?: Evidence for a resource-limited attentive tracking mechanism can you track?: Evidence for a resource-limited attentive tracking mechanism. Journal of Vision, 7 model), or whether the limit on tracking is set by a resource that can be flexibly allocated to objects

Alvarez, George A.

Note: This page contains sample records for the topic "limited operational flexibility" 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

Analysis of high-burnup fuel performance during load-follow operation  

SciTech Connect (OSTI)

In Japan, an objective of the burnup extension of nuclear fuel is to raise the licensing limit of burnup from 39 to 48 GWd/t for pressurized water reactors (PWRs) in the near future. Because of an increasing ratio of nuclear power generation, the necessity of the load-follow operation, which responds flexibly to changing power demands, is more apparent. To evaluate accurately the mechanical integrity of PWR fuel at high burnup during a load-follow operation, the FEMAXI-III code, originally developed for analyses of fuel experiments, was modified, improving submodels to evaluate PWR fuel; the new code was named IRON. The results of verification work on the code using data on PWR fuel covering wide ranges of burnup and linear heat rate show that it has good predictability and, therefore, that the improvement was confirmed as effective.

Matsui, T.; Fukuya, K.; Kinoshita, M.

1987-01-01T23:59:59.000Z

162

Real-Time Pricing- A Flexible Alternative for Electrical Power Supply  

E-Print Network [OSTI]

REAL-TIME PRICING - A FLEXIBLE ALTERNATIVE ..OR ELECTRICAL POWER SUPPLY S. D. REYNOLDS Manager of Industrial Marketing & Services Tennessee Valley Authority Chattanooga, Tennessee ABSTRACT In an increasingly competitive operating... environment, utilities must place greater emphasis on developing programs that benefit the customer while at the same time benefiting the utility. Economy Surplus Power (ESP) is such a program. ESP offers industrial customers attractively priced power...

Reynolds, S. D.; Frye, A. O. Jr.

163

Enabling Advanced Modeling and Simulations for Fuel-Flexible Combustors  

SciTech Connect (OSTI)

The overall goal of the present project is to enable advanced modeling and simulations for the design and optimization of fuel-flexible turbine combustors. For this purpose we use a high fidelity, extensively-tested large-eddy simulation (LES) code and state-of-the-art models for premixed/partially-premixed turbulent combustion developed in the PI's group. In the frame of the present project, these techniques are applied, assessed, and improved for hydrogen enriched premixed and partially premixed gas-turbine combustion. Our innovative approaches include a completely consistent description of flame propagation; a coupled progress variable/level set method to resolve the detailed flame structure, and incorporation of thermal-diffusion (non-unity Lewis number) effects. In addition, we have developed a general flamelet-type transformation holding in the limits of both non-premixed and premixed burning. As a result, a model for partially premixed combustion has been derived. The coupled progress variable/level method and the general flamelet transformation were validated by LES of a lean-premixed low-swirl burner that has been studied experimentally at Lawrence Berkeley National Laboratory. The model is extended to include the non-unity Lewis number effects, which play a critical role in fuel-flexible combustor with high hydrogen content fuel. More specifically, a two-scalar model for lean hydrogen and hydrogen-enriched combustion is developed and validated against experimental and direct numerical simulation (DNS) data. Results are presented to emphasize the importance of non-unity Lewis number effects in the lean-premixed low-swirl burner of interest in this project. The proposed model gives improved results, which shows that the inclusion of the non-unity Lewis number effects is essential for accurate prediction of the lean-premixed low-swirl flame.

Pitsch, Heinz

2010-05-31T23:59:59.000Z

164

HENOTYPIC FLEXIBILITY IN THE digestive system of migratory birds is critically important in allowing birds to successfully overcome the phys-  

E-Print Network [OSTI]

67 6 P HENOTYPIC FLEXIBILITY IN THE digestive system of migratory birds is critically important food energy and nutrients and thereby slows the pace of migration. Lack of certain digestive enzymes can directly limit diet choice and utilization of foods that require such enzymes for digestion

Mladenoff, David

165

Waste tank characterization sampling limits  

SciTech Connect (OSTI)

This document is a result of the Plant Implementation Team Investigation into delayed reporting of the exotherm in Tank 241-T-111 waste samples. The corrective actions identified are to have immediate notification of appropriate Tank Farm Operations Shift Management if analyses with potential safety impact exceed established levels. A procedure, WHC-IP-0842 Section 12.18, ``TWRS Approved Sampling and Data Analysis by Designated Laboratories`` (WHC 1994), has been established to require all tank waste sampling (including core, auger and supernate) and tank vapor samples be performed using this document. This document establishes levels for specified analysis that require notification of the appropriate shift manager. The following categories provide numerical values for analysis that may indicate that a tank is either outside the operating specification or should be evaluated for inclusion on a Watch List. The information given is intended to translate an operating limit such as heat load, expressed in Btu/hour, to an analysis related limit, in this case cesium-137 and strontium-90 concentrations. By using the values provided as safety flags, the analytical laboratory personnel can notify a shift manager that a tank is in potential violation of an operating limit or that a tank should be considered for inclusion on a Watch List. The shift manager can then take appropriate interim measures until a final determination is made by engineering personnel.

Tusler, L.A.

1994-09-02T23:59:59.000Z

166

Flexible Spending Accounts (FSA) | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power.pdf Flash2006-14.pdfattachment.pdf6.pdf5.pdf Flash2010-75.pdf1.pdf0 Flash2011-4093Flexible

167

Optimally Controlled Flexible Fuel Powertrain System  

SciTech Connect (OSTI)

A multi phase program was undertaken with the stated goal of using advanced design and development tools to create a unique combination of existing technologies to create a powertrain system specification that allowed minimal increase of volumetric fuel consumption when operating on E85 relative to gasoline. Although on an energy basis gasoline / ethanol blends typically return similar fuel economy to straight gasoline, because of its lower energy density (gasoline ~ 31.8MJ/l and ethanol ~ 21.1MJ/l) the volume based fuel economy of gasoline / ethanol blends are typically considerably worse. This project was able to define an initial engine specification envelope, develop specific hardware for the application, and test that hardware in both single and multi-cylinder test engines to verify the ability of the specified powertrain to deliver reduced E85 fuel consumption. Finally, the results from the engine testing were used in a vehicle drive cycle analysis tool to define a final vehicle level fuel economy result. During the course of the project, it was identified that the technologies utilized to improve fuel economy on E85 also enabled improved fuel economy when operating on gasoline. However, the E85 fueled powertrain provided improved vehicle performance when compared to the gasoline fueled powertrain due to the improved high load performance of the E85 fuel. Relative to the baseline comparator engine and considering current market fuels, the volumetric fuel consumption penalty when running on E85 with the fully optimized project powertrain specification was reduced significantly. This result shows that alternative fuels can be utilized in high percentages while maintaining or improving vehicle performance and with minimal or positive impact on total cost of ownership to the end consumer. The justification for this project was two-fold. In order to reduce the US dependence on crude oil, much of which is imported, the US Environmental Protection Agency (EPA) developed the Renewable Fuels Standard (RFS) under the Energy Policy Act of 2005. The RFS specifies targets for the amount of renewable fuel to be blended into petroleum based transportation fuels. The goal is to blend 36 billion gallons of renewable fuels into transportation fuels by 2022 (9 billion gallons were blended in 2008). The RFS also requires that the renewable fuels emit fewer greenhouse gasses than the petroleum fuels replaced. Thus the goal of the EPA is to have a more fuel efficient national fleet, less dependent on petroleum based fuels. The limit to the implementation of certain technologies employed was the requirement to run the developed powertrain on gasoline with minimal performance degradation. The addition of ethanol to gasoline fuels improves the fuels octane rating and increases the fuels evaporative cooling. Both of these fuel property enhancements make gasoline / ethanol blends more suitable than straight gasoline for use in downsized engines or engines with increased compression ratio. The use of engine downsizing and high compression ratios as well as direct injection (DI), dual independent cam phasing, external EGR, and downspeeding were fundamental to the fuel economy improvements targeted in this project. The developed powertrain specification utilized the MAHLE DI3 gasoline downsizing research engine. It was a turbocharged, intercooled, DI engine with dual independent cam phasing utilizing a compression ratio of 11.25 : 1 and a 15% reduction in final drive ratio. When compared to a gasoline fuelled 2.2L Ecotec engine in a Chevrolet HHR, vehicle drive cycle predictions indicate that the optimized powertrain operating on E85 would result in a reduced volume based drive cycle fuel economy penalty of 6% compared to an approximately 30% penalty for current technology engines.

Duncan Sheppard; Bruce Woodrow; Paul Kilmurray; Simon Thwaite

2011-06-30T23:59:59.000Z

168

Flexible Conversion Ratio Fast Reactor Systems Evaluation  

SciTech Connect (OSTI)

Conceptual designs of lead-cooled and liquid salt-cooled fast flexible conversion ratio reactors were developed. Both concepts have cores reated at 2400 MWt placed in a large-pool-type vessel with dual-free level, which also contains four intermediate heat exchanges coupling a primary coolant to a compact and efficient supercritical CO2 Brayton cycle power conversion system. Decay heat is removed passively using an enhanced Reactor Vessel Auxiliary Cooling System and a Passive Secondary Auxiliary Cooling System. The most important findings were that (1) it is feasible to design the lead-cooled and salt-cooled reactor with the flexible conversion ratio (CR) in the range of CR=0 and CR=1 n a manner that achieves inherent reactor shutdown in unprotected accidents, (2) the salt-cooled reactor requires Lithium thermal Expansion Modules to overcme the inherent salt coolant's large positive coolant temperature reactivity coefficient, (3) the preferable salt for fast spectrum high power density cores is NaCl-Kcl-MgCl2 as opposed to fluoride salts due to its better themal-hydraulic and neutronic characteristics, and (4) both reactor, but attain power density 3 times smaller than that of the sodium-cooled reactor.

Neil Todreas; Pavel Hejzlar

2008-06-30T23:59:59.000Z

169

CZT vs FFT: Flexibility vs Speed  

SciTech Connect (OSTI)

Bluestein's Fast Fourier Transform (FFT), commonly called the Chirp-Z Transform (CZT), is a little-known algorithm that offers engineers a high-resolution FFT combined with the ability to specify bandwidth. In the field of digital signal processing, engineers are always challenged to detect tones, frequencies, signatures, or some telltale sign that signifies a condition that must be indicated, ignored, or controlled. One of these challenges is to detect specific frequencies, for instance when looking for tones from telephones or detecting 60-Hz noise on power lines. The Goertzel algorithm described in Embedded Systems Programming, September 2002, offered a powerful tool toward finding specific frequencies faster than the FFT.Another challenge involves analyzing a range of frequencies, such as recording frequency response measurements, matching voice patterns, or displaying spectrum information on the face of an amateur radio. To meet this challenge most engineers use the well-known FFT. The CZT gives the engineer the flexibility to specify bandwidth and outputs real and imaginary frequency components from which the magnitude and phase can be computed. A description of the CZT and a discussion of the advantages and disadvantages of CZT versus the FFT and Goertzel algorithms will be followed by situations in which the CZT would shine. The reader will find that the CZT is very useful but that flexibility has a price.

S. Sirin

2003-10-01T23:59:59.000Z

170

A Flexible Approach to Embedded Network Multicast Authentication  

E-Print Network [OSTI]

A Flexible Approach to Embedded Network Multicast Authentication Chris Szilagyi ECE Department Carnegie Mellon University szilagyi@cmu.edu Philip Koopman ECE Department Carnegie Mellon University

Koopman, Philip

171

ENVIRONMENTAL ASSESSMENT/REGULATORY IMPACT REVIEW/ FINAL REGULATORY FLEXIBILITY ANALYSIS  

E-Print Network [OSTI]

ENVIRONMENTAL ASSESSMENT/REGULATORY IMPACT REVIEW/ FINAL REGULATORY FLEXIBILITY ANALYSIS.0 NEPA REQUIREMENTS: ENVIRONMENTAL IMPACTS OF THE ALTERNATIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.1 Environmental Impacts of the Alternatives

172

Hail Impact Testing on Crystalline Si Modules with Flexible Packaging  

Broader source: Energy.gov (indexed) [DOE]

% Semi-flexible packaging of silicon solar cells has potential applications in BIPV and consumer electronics. One of the more difficult reliability requirements for...

173

Development of Fuel-Flexible Combustion Systems Utilizing Opportunity...  

Broader source: Energy.gov (indexed) [DOE]

GE Global Research developed and tested new fuel-flexible gas turbine nozzle technology concepts that will enable end users to efficiently generate power and heat from industrial...

174

Regenerator Location Problem in Flexible Optical Networks  

E-Print Network [OSTI]

Using real world network topologies, we conduct extensive numerical .... it to the operations research literature, proving its NP-completeness and showing.

2014-11-22T23:59:59.000Z

175

Energy Savings Potential of Flexible and Adaptive HVAC Distribution Systems for Office Buildings  

SciTech Connect (OSTI)

It has been understood by architects and engineers that office buildings with easily re-configurable space and flexible mechanical and electrical systems are able to provide comfort that increases worker productivity while using less energy. Raised floors are an example of how fresh air, thermal conditioning, lighting needs, and network access can be delivered in a flexible manner that is not ''embedded'' within the structure. What are not yet documented is how well these systems perform and how much energy they can save. This area is being investigated in phased projects of the 21st Century Research Program of the Air-conditioning and Refrigeration Technology Institute. For the initial project, research teams at the Center for Building Performance and Diagnostics, Pittsburgh, Pennsylvania, and Oak Ridge National Laboratory, Oak Ridge, Tennessee, documented the diversity, performance, and incidence of flexible and adaptive HVAC systems. Information was gathered worldwide from journal and conference articles, case studies, manufactured products and assemblies, and interviews with design professionals. Their report thoroughly describes the variety of system types along with the various design alternatives observed for plenums, diffusers, individual control, and system integration. Many of the systems are illustrated in the report and the authors provide quantitative and qualitative comparisons. Among conclusions regarding key design issues, and barriers to widespread adoption, the authors state that flexible and adaptive HVAC systems, such as underfloor air, perform as well if not better than ceiling-based systems. Leading engineers have become active proponents after their first experience, which is resulting in these flexible and adaptive HVAC systems approaching 10 percent of the new construction market. To encourage adoption of this technology that improves thermal comfort and indoor air quality, follow-on work is required to further document performance. Architects, professional engineers, and commercial real estate developers will benefit from the availability of information that quantifies energy savings, first cost construction differences, and additional operating costs created when office space must be reconfigured to accommodate new tenants.

Loftness, Vivian; Brahme, Rohini; Mondazzi, Michelle; Vineyard, Edward; MacDonald, Michael

2002-06-01T23:59:59.000Z

176

Passive fault current limiting device  

DOE Patents [OSTI]

A passive current limiting device and isolator is particularly adapted for use at high power levels for limiting excessive currents in a circuit in a fault condition such as an electrical short. The current limiting device comprises a magnetic core wound with two magnetically opposed, parallel connected coils of copper, a high temperature superconductor or other electrically conducting material, and a fault element connected in series with one of the coils. Under normal operating conditions, the magnetic flux density produced by the two coils cancel each other. Under a fault condition, the fault element is triggered to cause an imbalance in the magnetic flux density between the two coils which results in an increase in the impedance in the coils. While the fault element may be a separate current limiter, switch, fuse, bimetal strip or the like, it preferably is a superconductor current limiter conducting one-half of the current load compared to the same limiter wired to carry the total current of the circuit. The major voltage during a fault condition is in the coils wound on the common core in a preferred embodiment. 6 figs.

Evans, D.J.; Cha, Y.S.

1999-04-06T23:59:59.000Z

177

Systematic Comparison of Operating Reserve Methodologies: Preprint  

SciTech Connect (OSTI)

Operating reserve requirements are a key component of modern power systems, and they contribute to maintaining reliable operations with minimum economic impact. No universal method exists for determining reserve requirements, thus there is a need for a thorough study and performance comparison of the different existing methodologies. Increasing penetrations of variable generation (VG) on electric power systems are posed to increase system uncertainty and variability, thus the need for additional reserve also increases. This paper presents background information on operating reserve and its relationship to VG. A consistent comparison of three methodologies to calculate regulating and flexibility reserve in systems with VG is performed.

Ibanez, E.; Krad, I.; Ela, E.

2014-04-01T23:59:59.000Z

178

Passivation coating for flexible substrate mirrors  

DOE Patents [OSTI]

A protective diffusion barrier for metalized mirror structures is provided by a layer or coating of silicon nitride which is a very dense, transparent, dielectric material that is impervious to water, alkali, and other impurities and corrosive substances that typically attack the metal layers of mirrors and cause degradation of the mirrors' reflectivity. The silicon nitride layer can be deposited on the substrate before metal deposition thereon to stabilize the metal/substrate interface, and it can be deposited over the metal to encapsulate it and protect the metal from corrosion or other degradation. Mirrors coated with silicon nitride according to this invention can also be used as front surface mirrors. Also, the silver or other reflective metal layer on mirrors comprising thin, lightweight, flexible substrates of metal or polymer sheets coated with glassy layers can be protected with silicon nitride according to this invention.

Tracy, C. Edwin (Golden, CO); Benson, David K. (Golden, CO)

1990-01-01T23:59:59.000Z

179

Carbon coated textiles for flexible energy storage  

SciTech Connect (OSTI)

This paper describes a flexible and lightweight fabric supercapacitor electrode as a possible energy source in smart garments. We examined the electrochemical behavior of porous carbon materials impregnated into woven cotton and polyester fabrics using a traditional printmaking technique (screen printing). The porous structure of such fabrics makes them attractive for supercapacitor applications that need porous films for ion transfer between electrodes. We used cyclic voltammetry, galvanostatic cycling and electrochemical impedance spectroscopy to study the capacitive behaviour of carbon materials using nontoxic aqueous electrolytes including sodium sulfate and lithium sulfate. Electrodes coated with activated carbon (YP17) and tested at 0.25 A$g1 achieved a high gravimetric and areal capacitance, an average of 85 F$g1 on cotton lawn and polyester microfiber, both corresponding to 0.43 F$cm2.

Jost, Kristy [Drexel University; Perez, Carlos O [ORNL; Mcdonough, John [Drexel University; Presser, Volker [ORNL; Heon, Min [Drexel University; Dion, Genevieve [Drexel University; Gogotsi, Yury [ORNL

2011-01-01T23:59:59.000Z

180

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

SciTech Connect (OSTI)

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

Venkatesan, Krishna

2011-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

OPERATIONS (OPS)  

Broader source: Energy.gov (indexed) [DOE]

OPS) OBJECTIVE OPS.1 The formality and discipline of operations is adequate to conduct work safely and programs are in place to maintain this formality and discipline. (CR 13)...

182

Design operators  

E-Print Network [OSTI]

Design operators is a thesis that investigates the nature and characteristics of the design process by examining the interaction of computation with architectural design. The effects of the introduction of these media in ...

Dritsas, Stylianos, 1978-

2004-01-01T23:59:59.000Z

183

Operating Costs  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This chapter is focused on capital costs for conventional construction and environmental restoration and waste management projects and examines operating cost estimates to verify that all elements of the project have been considered and properly estimated.

1997-03-28T23:59:59.000Z

184

A flexible framework for secure and efficient program obfuscation.  

SciTech Connect (OSTI)

In this paper, we present a modular framework for constructing a secure and efficient program obfuscation scheme. Our approach, inspired by the obfuscation with respect to oracle machines model of [4], retains an interactive online protocol with an oracle, but relaxes the original computational and storage restrictions. We argue this is reasonable given the computational resources of modern personal devices. Furthermore, we relax the information-theoretic security requirement for computational security to utilize established cryptographic primitives. With this additional flexibility we are free to explore different cryptographic buildingblocks. Our approach combines authenticated encryption with private information retrieval to construct a secure program obfuscation framework. We give a formal specification of our framework, based on desired functionality and security properties, and provide an example instantiation. In particular, we implement AES in Galois/Counter Mode for authenticated encryption and the Gentry-Ramzan [13]constant communication-rate private information retrieval scheme. We present our implementation results and show that non-trivial sized programs can be realized, but scalability is quickly limited by computational overhead. Finally, we include a discussion on security considerations when instantiating specific modules.

Solis, John Hector

2013-03-01T23:59:59.000Z

185

Recovery of flexible polyurethane foam from shredder residue.  

SciTech Connect (OSTI)

Argonne National Laboratory has developed a patented, continuous process for the recovery of flexible polyurethane foam (PUF) from auto shredder residue (ASR). To test the process, Argonne researchers conceived of, designed, and built a continuous foam washing and drying system that was pilot-tested at a shredder facility for six months. Economic analysis of the process, using manufacturers' quotes and operating data from Argonne's pilot plant, indicates a payback of less than two years for a plant producing about 1,000 ton/yr of foam. Samples of clean foam were shipped to three major foam reprocessors; all three indicated that the quality of the PUF recovered by the Argonne process met their requirements. Tests of the recovered foam by an independent testing laboratory showed that the recycled foam met the specifications for several automotive applications, including carpet padding, headliner, and sound-suppression support materials. Recovery of foam reduces the mass and the volume of material going to the landfill by about 5% and 30%, respectively. Annually, recovery will save about 1.2 x 10{sup 12} Btu of energy, cut the amount of solid waste being landfilled by about 150,000 tons, and eliminate the emission of about 250 tons of volatile organic compounds (VOCs) into the air.

Daniels, E. J.; Jody, b. J.

1999-06-29T23:59:59.000Z

186

Carbon nanotubes used to form fast, flexible circuitry  

E-Print Network [OSTI]

Carbon nanotubes used to form fast, flexible circuitry By Yun Xie | Published: July 23, 2008 - 12 the semiconductor portion of these flexible integrated circuits. Related Stories Carbon nanotubes as molecular scales Carbon nanotubes send electrons for a spin These conventional materials are serviceable

Rogers, John A.

187

An Ontology for Modelling Flexible Business Denis Berthier  

E-Print Network [OSTI]

An Ontology for Modelling Flexible Business Processes Denis Berthier GET/INT (Groupe des ?coles des for the modelling of interoperable and flexible business processes. We distinguish three types of Activities view of a business process [2]; and successful IS design starts with business process modelling [3

Paris-Sud XI, Université de

188

AIAA-2000-0030 Multi-Flexible-Body Analysis for  

E-Print Network [OSTI]

- bines, modeling the HAWT wind turbine system as a constant-speed rotor attached to a flexible tower tower to investi- gate the modal dynamics of a HAWT. A wind-turbine model, if sufficiently lowAIAA-2000-0030 Multi-Flexible-Body Analysis for Application to Wind-Turbine Control Design Dewey H

Patil, Mayuresh

189

Can Nuclear Power Be Flexible? Laurent POURET + William J. NUTTALL  

E-Print Network [OSTI]

in energy demand. Such a statement implies that nuclear power is incapable of load-following for technical1 Can Nuclear Power Be Flexible? Laurent POURET + William J. NUTTALL Judge Business School the issue of whether nuclear power can play a flexible role within an electricity system. It does not deal

Aickelin, Uwe

190

Qualification test for the flexible receiver. Revision 2  

SciTech Connect (OSTI)

This document provides the test plan and procedures to certify and design verify the 42{double_prime} and 4{double_prime}-6{double_prime} Flexible Receiver as a safety class 3 system. The Flexible Receiver will be used by projects W-151 and W-320 for removing equipment from tanks C-106 and AZ-101.

Tedeschi, D.J.

1994-12-12T23:59:59.000Z

191

Summary of Dissolved Concentration Limits  

SciTech Connect (OSTI)

According to the Technical Work Plan titled Technical Work Plan for Waste Form Degradation Process Model Report for SR (CRWMS M&O 2000a), the purpose of this study is to perform abstractions on solubility limits of radioactive elements based on the process-level information and thermodynamic databases provided by Natural Environment Program Operations (NEPO) and Waste Package Operations (WPO). The scope of this analysis is to produce solubility limits as functions, distributions, or constants for all transported radioactive elements identified by the Performance Assessment Operations (PAO) radioisotope screening. Results from an expert elicitation for solubility limits of most radioactive elements were used in the previous Total System Performance Assessments (TSPAs). However, the elicitation conducted in 1993 does not meet the criteria set forth by the U.S. Nuclear Regulatory Commission (NRC) due to lack of documentation and traceability (Kotra et al. 1996, Section 3). Therefore, at the Waste Form Abstraction Workshop held on February 2-4, 1999, at Albuquerque, New Mexico, the Yucca Mountain Site Characterization Project (YMP) decided to develop geochemical models to study solubility for the proposed Monitored Geologic Repository. WPO/NEPO is to develop process-level solubility models, including review and compilation of relevant thermodynamic data. PAO's responsibility is to perform abstractions based on the process models and chemical conditions and to produce solubility distributions or response surfaces applicable to the proposed repository. The results of this analysis and conceptual model will feed the performance assessment for Total System Performance Assessment--Site Recommendation (TSPA-SR) and Total System Performance Assessment--License Application (TSPA-LA), and to the Waste Form Degradation Process Model Report section on concentration limits.

Yueting Chen

2001-06-11T23:59:59.000Z

192

Designing fast, efficient and flexible transport  

E-Print Network [OSTI]

and maintain industrial systems. The curriculum includes courses covering such topics as tools (design, simulation and analysis), machinery, equipment, industrial systems, logistics, operations, information and foreseen challenges in industry, using both scientific, practical and applied knowledge. All aspects

Langendoen, Koen

193

Evaluating manufacturing flexibility driven by learning  

E-Print Network [OSTI]

A defining feature of modern industry is operating in a context of nearly continuous technological change. Nevertheless, industrial decision-makers must select technologies and implement production strategies even in the ...

Nadeau, Marie-Claude

2009-01-01T23:59:59.000Z

194

Notice of Emergency Action - Emergency Order To Resume Limited...  

Broader source: Energy.gov (indexed) [DOE]

Emergency Action - Emergency Order To Resume Limited Operation at the Potomac River Generating Station, Alexandria, VA, in Response to Electricity Reliability Concerns in...

195

Laboratory Investigations of low-swirl injectors operating with syngases - article no. 011502  

SciTech Connect (OSTI)

The low-swirl injector (LSI) is a lean premixed combustion technology that has the potential for adaptation to fuel-flexible gas turbines operating on a variety of fuels. The objective of this study is to gain a fundamental understanding of the effect of syngas on the LSI flame behavior, the emissions, and the flowfield characteristics for adaptation to the combustion turbines in integrated gasification combined cycle clean coal power plants. The experiments were conducted in two facilities. Open atmospheric laboratory flames generated by a full size (6.35 cm) LSI were used to investigate the lean blow-off limits, emissions, and the flowfield characteristics. Verification of syngas operation at elevated temperatures and pressures were performed with a reduced scale (2.54 cm) LSI in a small pressurized combustion channel. The results show that the basic LSI design is amenable to burning syngases with up to 60% H{sub 2}. Syngases with high H{sub 2} concentration have lower lean blow-off limits. From particle image velocimetry measurements, the flowfield similarity behavior and the turbulent flame speeds of syngases flames are consistent with those observed in hydrocarbon and pure or diluted hydrogen flames. The NOx emissions from syngas flames show log-linear dependency on the adiabatic flame temperature and are comparable to those reported for the gaseous fuels reported previously. Successful firing of the reduced-scale LSI at 450 K operability of this concept at gas turbine conditions.

Littlejohn, D.; Cheng, R.K.; Noble, D.R.; Lieuwen, T. [University of California Berkeley, Berkeley, CA (United States). Lawrence Berkeley Laboratory

2010-01-15T23:59:59.000Z

196

Discoloration resistant, flexible, radiation curable coating compositions  

SciTech Connect (OSTI)

A low dosage radiation polymerizable protective and decorative coating composition or paint, coated articles bearing such a protective coating and processess for preparing such articles. The radiation polymerizable coating composition comprises an organic resin/monomer mixture of: (A) between about 97 and about 3 weight percent alphabeta olefinically unsaturated organic resin containing between about 0.5 and about 5 vinyl unsaturation units per 1000 molecular weight of said resin, and (B) between about 3 and about 97 weight percent vinyl monomers polymerizable with said resin upon exposure to radiation, characterized in that said vinyl monomers include N-vinyl-2-pyrrolidone in an amount of from about 3 and up to about 10 weight percent based on the total weight of (A) and (B). The flexible coating exhibits excellent physical qualtities and good adhesion to a variety of substrates being particularly suitable for use on vinyl chloride fabric, wherein it is discoloration resistant after heat aging. Preferred articles bearing such a coating, which may comprise large amounts of pigment, are preferably cured by exposure to electron beam radiation.

Cassatta, J.C.; Garrett, D.L. Jr.; Van Oene, H.

1984-10-16T23:59:59.000Z

197

Comments on Emergency Order to Resume Limited Operation at the...  

Broader source: Energy.gov (indexed) [DOE]

regional, non-profit organization to work solely on decreasing the negative effects of global warming by promoting clean energy alternatives and ensuring proper regulation of...

198

DOE Orders Mirant Power Plant to Operate Under Limited Circumstances |  

Broader source: Energy.gov (indexed) [DOE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe HouseStudents2.2at MultipleorderNuclearThis fact sheetHeat Pump Models

199

DOE Orders Mirant Power Plant to Operate Under Limited Circumstances |  

Broader source: Energy.gov (indexed) [DOE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomenthe HouseStudents2.2at MultipleorderNuclearThis fact sheetHeat Pump

200

Sixth Northwest Conservation and Electric Power Plan Chapter 12: Capacity and Flexibility Resources  

E-Print Network [OSTI]

............................................................................................ 6 Flexibility Issues Raised By Wind Generation system capacity and flexibility a new priority. Wind generation needs back-up, flexible resources new wind generation with a more constrained hydrosystem, there are solutions. The first step

Note: This page contains sample records for the topic "limited operational flexibility" 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

Silicon-Based Thermoelectrics: Harvesting Low Quality Heat Using Economically Printed Flexible Nanostructured Stacked Thermoelectric Junctions  

SciTech Connect (OSTI)

Broad Funding Opportunity Announcement Project: UIUC is experimenting with silicon-based materials to develop flexible thermoelectric deviceswhich convert heat into energythat can be mass-produced at low cost. A thermoelectric device, which resembles a computer chip, creates electricity when a different temperature is applied to each of its sides. Existing commercial thermoelectric devices contain the element tellurium, which limits production levels because tellurium has become increasingly rare. UIUC is replacing this material with microscopic silicon wires that are considerably cheaper and could be equally effective. Improvements in thermoelectric device production could return enough wasted heat to add up to 23% to our current annual electricity production.

None

2010-03-01T23:59:59.000Z

202

Tracking Provenance in ORNL's Flexible Research Platforms  

SciTech Connect (OSTI)

Provenance is dened as information about the origin of objects, a concept that applies to both physical and digital objects and often overlaps both. The use of provenance in systems designed for research is an important but forgotten feature. Provenance allows for proper and exact tracking of information, its use, its lineage, its derivations and other metadata that are important for correctly adhering to the scien- tic method. In our project's prescribed use of provenance, researchers can determine detailed information about the use of sensor data in their experiments on ORNL's Flexible Research Platforms (FRPs). Our project's provenance system, Provenance Data Management System (ProvDMS), tracks information starting with the creation of information by an FRP sensor. The system determines station information, sensor information, and sensor channel information. The system allows researchers to derive generations of experiments from the sensor data and tracks their hierarchical flow. Key points can be seen in the history of the information as part of the information's workflow. The concept of provenance and its usage in science is relatively new and while used in other cases around the world, our project's provenance diers in a key area. To keep track of provenance, most systems must be designed or redesigned around the new provenance system. Our system is designed as a cohesive but sepa- rate entity and allows for researchers to continue using their own methods of analysis without being constrained in their ways in order to track the provenance. We have designed ProvDMS using a lightweight provenance library, Core Provenance Library (CPL) v.6 In addition to keeping track of sensor data experiments and its provenance, ProvDMS also provides a web-enabled visualization of the inheritance.

Hensley, Zachary P [ORNL; Sanyal, Jibonananda [ORNL; New, Joshua Ryan [ORNL

2013-08-01T23:59:59.000Z

203

Operation Poorman  

SciTech Connect (OSTI)

The objectives of Operation Poorman were to design and build a portable seismic system and to set up and use this system in a cold-weather environment. The equipment design uses current technology to achieve a low-power, lightweight system that is configured into three modules. The system was deployed in Alaska during wintertime, and the results provide a basis for specifying a mission-ready seismic verification system.

Pruvost, N.; Tsitouras, J.

1981-03-18T23:59:59.000Z

204

Operations Videos  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratorySpeeding access1 TechnicalOilOnlineandOperations

205

Freeze Crystallization Processes: Efficiency by Flexibility  

E-Print Network [OSTI]

change is required only once in freeze processes, as opposed to the high reflux ratios needed in most distillation separations. 2) The latent heat of fusion is less than the heat of vaporization, and the process operates at a lower temperature, so...

Heist, J. A.; Barron, T. S.

1983-01-01T23:59:59.000Z

206

A Tunable Hemispherical Platform for Non-Stretching Curved Flexible Electronics and Optoelectronics  

E-Print Network [OSTI]

Flexible Electronics and Optoelectronics Jinda Zhuang and Y.flexible electronics or optoelectronics on curved surfacesflexible electronics and optoelectronics for a wide variety

Ju, Y. Sungtaek

2014-01-01T23:59:59.000Z

207

Method for encapsulating the edge of a flexible sheet  

SciTech Connect (OSTI)

The present invention is premised upon an inventive method of producing an over-molded edge portion on a flexible substrate, wherein the edge portion is void of open areas due to support devices in the mold cavity.

Keenihan, James R; Clarey, Todd M

2013-02-19T23:59:59.000Z

208

Flexibility in transportation procurement : a real options approach  

E-Print Network [OSTI]

Shippers who use for-hire carriers need a careful estimation of their need for trucking capacity in order to be able to haul products in a timely and cost-effective manner. This thesis outlines a flexible approach to ...

Zhelev, Georgi Zhelev, 1975-

2004-01-01T23:59:59.000Z

209

Controlling memory and resolving interference : prefrontal contributions to flexible behavior  

E-Print Network [OSTI]

Flow does the brain meet shifting task demands? The experiments and formal theoretical framework presented in this dissertation characterize the cognitive and neural processes by which flexible performance is enabled during ...

Badre, David

2005-01-01T23:59:59.000Z

210

Flexible Consistency Checking Christian Nentwich, Wolfgang Emmerich, Anthony Finkelstein  

E-Print Network [OSTI]

Flexible Consistency Checking Christian Nentwich, Wolfgang Emmerich, Anthony Finkelstein Department of Computer Science University College London Gower Street, London, WC1E 6BT UK {c.nentwich,w.emmerich

Finkelstein, Anthony

211

Using Flexible Pipe (poly-pipe) with Surface Irrigation  

E-Print Network [OSTI]

Aimed at farmers and irrigators who want to irrigate their crops using flexible plastic pipes (commonly called "poly-pipe), this publication highlights (1) advantages of using poly-pipe, (2) factors to consider in selecting such pipe, and (3...

Peries, Xavier; Enciso, Juan

2005-10-05T23:59:59.000Z

212

Mechanics and design of flexible composite fish armor  

E-Print Network [OSTI]

Inspired by the overlapping scales found on teleost fish, a new composite architecture explores the mechanics of materials to accommodate both flexibility and protection. These biological structures consist of overlapping ...

Browning, Ashley (Ashley Rene)

2012-01-01T23:59:59.000Z

213

Facing reality : design and management of flexible engineering systems  

E-Print Network [OSTI]

This thesis proposes a practical approach to defining flexible design and development strategies for maximizing the expected value of engineering systems. Specifically, the approach deals with the fact that it is generally ...

Cardin, Michel-Alexandre, 1979-

2007-01-01T23:59:59.000Z

214

Compression effects on pressure loss in flexible HVAC ducts  

E-Print Network [OSTI]

to Determine Flow Resistance of HVAC Air Ducts and Fittings.Pressure Loss in Flexible HVAC Ducts Bass Abushakra, Ph.D.to Determine Flow Resistance of HVAC Air Ducts and Fittings.

Abushakra, Bass; Walker, Iain S.; Sherman, Max H.

2002-01-01T23:59:59.000Z

215

Fully portable, highly flexible dilution refrigerator systems for neutron scattering  

E-Print Network [OSTI]

775 Fully portable, highly flexible dilution refrigerator systems for neutron scattering P. A systems developed specifically for neutron scattering environ- ments. The refrigerators are completely relatively recently however, the lowest temperatures available in almost all neutron scattering laboratories

Boyer, Edmond

216

Robotic Communication Systems for Flexible, Sustainable, Affordable, and  

E-Print Network [OSTI]

by a Wireless Surface Local Area Network (WSLAN) consisting of small solar-powered communication towers, and flexible exploration of the solar system. However, current space communication systems are monolithic

Liberatore, Vincenzo

217

Scheduling optimization of a real flexible job shop including side ...  

E-Print Network [OSTI]

Aug 19, 2013 ... The multitask cell at GKN Aerospace Sweden is a production cell con- ...... In order to demonstrate the effect of the squeezing procedure we solved ..... [13] J. Gao, M. Gen, L. Sun, Scheduling jobs and maintenances in flexible.

2013-08-19T23:59:59.000Z

218

Operational health physics training  

SciTech Connect (OSTI)

The initial four sections treat basic information concerning atomic structure and other useful physical quantities, natural radioactivity, the properties of {alpha}, {beta}, {gamma}, x rays and neutrons, and the concepts and units of radiation dosimetry (including SI units). Section 5 deals with biological effects and the risks associated with radiation exposure. Background radiation and man-made sources are discussed next. The basic recommendations of the ICRP concerning dose limitations: justification, optimization (ALARA concepts and applications) and dose limits are covered in Section seven. Section eight is an expanded version of shielding, and the internal dosimetry discussion has been extensively revised to reflect the concepts contained in the MIRD methodology and ICRP 30. The remaining sections discuss the operational health physics approach to monitoring radiation. Individual sections include radiation detection principles, instrument operation and counting statistics, health physics instruments and personnel monitoring devices. The last five sections deal with the nature of, operation principles of, health physics aspects of, and monitoring approaches to air sampling, reactors, nuclear safety, gloveboxes and hot cells, accelerators and x ray sources. Decontamination, waste disposal and transportation of radionuclides are added topics. Several appendices containing constants, symbols, selected mathematical topics, and the Chart of the Nuclides, and an index have been included.

NONE

1992-06-01T23:59:59.000Z

219

An evaluation of the flexible pavement design system FPS19  

E-Print Network [OSTI]

AN EVALUATION OF THE FLEXIBLE PAVEMENT DESIGN SYSTEM FPS18 A Thesis by GERARDO MARTINEZ CARMONA Submitted to the Office of Graduate Studies of Texas ASM University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE May 1998 Major Subject: Civil Engineering AN EVALUATION OF THE FLEXIBLE PAVEMENT DESIGN SYSTEM FPS1II A Thesis by GERARDO MARTINEZ CARMONA Submitted to Texas A&M University in partial fulfillment of the requirements for the degree...

Carmona, Gerardo M

1998-01-01T23:59:59.000Z

220

Title Flexible Work Arrangements: Attraction to Flextime, Flexplace, or Both?  

E-Print Network [OSTI]

iii FLEXIBLE WORK ARRANGEMENTS: ATTRACTION TO FLEXTIME, FLEXPLACE, OR BOTH? A Thesis by REBECCA JEAN THOMPSON Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 2011 Major Subject: Psychology iv FLEXIBLE WORK ARRANGEMENTS: ATTRACTION TO FLEXTIME, FLEXPLACE, OR BOTH? A Thesis by REBECCA JEAN THOMPSON Submitted to the Office of Graduate...

Thompson, Rebecca

2012-02-14T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Design and Analysis of Flexible Biodiesel Processes with Multiple Feedstocks  

E-Print Network [OSTI]

DESIGN AND ANALYSIS OF FLEXIBLE BIODIESEL PROCESSES WITH MULTIPLE FEEDSTOCKS A Dissertation by GRACE AMARACHUKWU POKOO-AIKINS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of DOCTOR OF PHILOSOPHY August 2010 Major Subject: Chemical Engineering DESIGN AND ANALYSIS OF FLEXIBLE BIODIESEL PROCESSES WITH MULTIPLE FEEDSTOCKS A Dissertation by GRACE AMARACHUKWU POKOO...

Pokoo-Aikins, Grace Amarachukwu

2011-10-21T23:59:59.000Z

222

Characterization of a Saturated and Flexible Aliphatic Polyol Anion Receptor  

SciTech Connect (OSTI)

Nature employs flexible molecules to bind anions in a variety of physiologically important processes whereas supramolecular chemists have been designing rigid substrates that minimize or eliminate intramolecular hydrogen bond interactions to carry out anion recogni-tion. Herein, the association of a flexible polyhydroxy alkane with chloride ion is described and the bound re-ceptor is characterized by infrared and photoelectron spectroscopy in the gas phase, computations, and its bind-ing constant as a function of temperature in acetonitrile.

Shokri, Alireza; Schmidt, Jacob C.; Wang, Xue B.; Kass, Steven R.

2012-10-17T23:59:59.000Z

223

CLASSIFICATION OF FIRST-ORDER FLEXIBLE REGULAR BICYCLE POLYGONS  

E-Print Network [OSTI]

CLASSIFICATION OF FIRST-ORDER FLEXIBLE REGULAR BICYCLE POLYGONS ROBERT CONNELLY AND BAL´AZS CSIK´OS Abstract. A bicycle (n, k)-gon is an equilateral n-gon whose k-diagonals are equal. S. Tabachnikov proved that a regular n-gon is first-order flexible as a bicycle (n, k)-gon if and only if there is an integer 2 r n

Connelly, Robert

224

Apply early! Limited enrollment.  

E-Print Network [OSTI]

volcano. Experience the culture and history of Hawaii, and the impact of human activitiesApply early! Limited enrollment. Environmental Science in the Hawaiian Islands Observe, research

225

Operations Information  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 The 2002 WholesaleEnergy'sRunning jobsOPERATING PLANOperations

226

Roll-to-roll atomic layer deposition process for flexible electronics encapsulation applications  

SciTech Connect (OSTI)

At present flexible electronic devices are under extensive development and, among them, flexible organic light-emitting diode displays are the closest to a large market deployment. One of the remaining unsolved challenges is high throughput production of impermeable flexible transparent barrier layers that protect sensitive light-emitting materials against ambient moisture. The present studies deal with the adaptation of the atomic layer deposition (ALD) process to high-throughput roll-to-roll production using the spatial ALD concept. We report the development of such a process for the deposition of 20?nm thickness Al{sub 2}O{sub 3} diffusion barrier layers on 500?mm wide polymer webs. The process uses trimethylaluminum and water as precursors at a substrate temperature of 105?C. The observation of self-limiting film growth behavior and uniformity of thickness confirms the ALD growth mechanism. Water vapor transmission rates for 20?nm Al{sub 2}O{sub 3} films deposited on polyethylene naphthalate (PEN) substrates were measured as a function of substrate residence time, that is, time of exposure of the substrate to one precursor zone. Moisture permeation levels measured at 38?C/90% relative humidity by coulometric isostaticisobaric method were below the detection limit of the instrument (<5??10{sup ?4}?g/m{sup 2} day) for films coated at web moving speed of 0.25?m/min. Measurements using the Ca test indicated water vapor transmission rates ?5??10{sup ?6} g/m{sup 2} day. Optical measurements on the coated web showed minimum transmission of 80% in the visible range that is the same as the original PEN substrate.

Maydannik, Philipp S., E-mail: philipp.maydannik@lut.fi; Kriinen, Tommi O.; Lahtinen, Kimmo; Cameron, David C. [Advanced Surface Technology Research Laboratory, Lappeenranta University of Technology, Sammonkatu 12, 50130 Mikkeli (Finland); Sderlund, Mikko; Soininen, Pekka [Beneq Oy, P.O. Box 262, 01511 Vantaa (Finland); Johansson, Petri; Kuusipalo, Jurkka [Tampere University of Technology, Paper Converting and Packaging Technology, P.O. Box 589, 33101 Tampere (Finland); Moro, Lorenza; Zeng, Xianghui [Samsung Cheil Industries, San Jose R and D Center, 2186 Bering Drive, San Jose, California 95131 (United States)

2014-09-01T23:59:59.000Z

227

Recycling production designs : the value of coordination and flexibility in aluminum recycling operations  

E-Print Network [OSTI]

The growing motivation for aluminum recycling has prompted interest in recycling alternative and more challenging secondary materials. The nature of these alternative secondary materials necessitates the development of an ...

Brommer, Tracey H. (Tracey Helenius)

2013-01-01T23:59:59.000Z

228

Investment and Pricing with Spectrum Uncertainty: A Cognitive Operator's Perspective  

E-Print Network [OSTI]

" of licensed bands and dynamically leasing from the spectrum owner. As a result, a C-MVNO can make flexible--Cognitive radio, spectrum trading, spectrum sensing, dynamic spectrum leasing, spectrum pricing, Stackelberg game affecting the normal oper- ation of the spectrum owner who serves the primary (licensed) users. Dynamic

Huang, Jianwei

229

Cost-Benefit Analysis of Flexibility Retrofits for Coal and Gas-Fueled Power Plants: August 2012 - December 2013  

SciTech Connect (OSTI)

High penetrations of wind and solar power plants can induce on/off cycling and ramping of fossil-fueled generators. This can lead to wear-and-tear costs and changes in emissions for fossil-fueled generators. Phase 2 of the Western Wind and Solar Integration Study (WWSIS-2) determined these costs and emissions and simulated grid operations to investigate the full impact of wind and solar on the fossil-fueled fleet. This report studies the costs and benefits of retrofitting existing units for improved operational flexibility (i.e., capability to turndown lower, start and stop faster, and ramp faster between load set-points).

Venkataraman, S.; Jordan, G.; O'Connor, M.; Kumar, N.; Lefton, S.; Lew, D.; Brinkman, G.; Palchak, D.; Cochran, J.

2013-12-01T23:59:59.000Z

230

Optical limiting materials  

DOE Patents [OSTI]

Optical limiting materials. Methanofullerenes, fulleroids and/or other fullerenes chemically altered for enhanced solubility, in liquid solution, and in solid blends with transparent glass (SiO.sub.2) gels or polymers, or semiconducting (conjugated) polymers, are shown to be useful as optical limiters (optical surge protectors). The nonlinear absorption is tunable such that the energy transmitted through such blends saturates at high input energy per pulse over a wide range of wavelengths from 400-1100 nm by selecting the host material for its absorption wavelength and ability to transfer the absorbed energy into the optical limiting composition dissolved therein. This phenomenon should be generalizable to other compositions than substituted fullerenes.

McBranch, Duncan W. (Santa Fe, NM); Mattes, Benjamin R. (Santa Fe, NM); Koskelo, Aaron C. (Los Alamos, NM); Heeger, Alan J. (Santa Barbara, CA); Robinson, Jeanne M. (Los Alamos, NM); Smilowitz, Laura B. (Los Alamos, NM); Klimov, Victor I. (Los Alamos, NM); Cha, Myoungsik (Goleta, CA); Sariciftci, N. Serdar (Santa Barbara, CA); Hummelen, Jan C. (Groningen, NL)

1998-01-01T23:59:59.000Z

231

Impact of High Wind Power Penetration on Hydroelectric Unit Operations  

SciTech Connect (OSTI)

The Western Wind and Solar Integration Study (WWSIS) investigated the operational impacts of very high levels of variable generation penetration rates (up to 35% by energy) in the western United States. This work examines the impact of this large amount of wind penetration on hydroelectric unit operations. Changes in hydroelectric unit operating unit patterns are examined for an aggregation of all hydro generators. The cost impacts of maintaining hydro unit flexibility are assessed and compared for a number of different modes of system operation.

Hodge, B. M.; Lew, D.; Milligan, M.

2011-01-01T23:59:59.000Z

232

Measurement and self-adjoint operators  

E-Print Network [OSTI]

The approximations of classical mechanics resulting from quantum mechanics are richer than a correspondence of classical dynamical variables with self-adjoint Hilbert space operators. Assertion that classical dynamic variables correspond to self-adjoint Hilbert space operators is disputable and sets unnatural limits on quantum mechanics. Well known examples of classical dynamical variables not associated with self-adjoint Hilbert space operators are discussed as a motivation for the realizations of quantum field theory that lack Hermitian field operators but exhibit interaction.

Glenn Eric Johnson

2014-09-05T23:59:59.000Z

233

Synchronization of Limit Sets  

E-Print Network [OSTI]

In this Letter, we derive a sufficient condition of synchronizing limit sets (attractors and repellers) by using the linear feedback control technique proposed here. There examples are included. The numerical simulations and computer graphics show that our method work well.

Changpin Li; Weihua Deng

2005-10-10T23:59:59.000Z

234

Catalytic autothermal reforming increases fuel cell flexibility  

SciTech Connect (OSTI)

To give a better understanding of autothermal reforming (ATR), a process which offers an advantageous alternative to steam reforming for H/sub 2/ production for fuel cells because of the wider range of fuels which can be converted, the conversion of individual fuel components was studied. Attempts have been made to characterize the chemical reactions of light and heavy paraffins and aromatics in ATR. Results of studies to determine the effects of operating parameters on the carbon-forming tendency of each hydrocarbon type are reported. The catalyst used for the ATR process was three-layers of supported nickel catalysts, Norton NC-100 spheres in the top zone, cylindrical G-56B tablets in the bottom one, and either ICI 46-I or ICI 46-4 Raschig rings in the middle zone. A summary of the experimental studies of the ATR of n-hexane, n-tetradecane, benzene, and benzene solutions of naphthalene is presented. (BLM)

Flytzani-Stephanopoulos, M.; Voecks, G.E.

1981-12-01T23:59:59.000Z

235

Catalytic autothermal reforming increases fuel cell flexibility  

SciTech Connect (OSTI)

Experimental results are presented for the autothermal reforming (ATR) of n-hexane, n-tetradecane, benzene and benzene solutions of naphthalene. The tests were run at atmospheric pressure and at moderately high reactant preheat temperatures in the 800-900 K range. Carbon formation lines were determined for paraffinic and aromatic liquids. Profiles were determined for axial bed temperature and composition. Space velocity efforts were assessed, and the locations and types of carbon were recorded. Significant reactive differences between hydrocarbons were identified. Carbon formation characteristics were hydrocarbon specific. The differing behavior of paraffinic and aromatic fuels with respect to their carbon formation may be important in explaining the narrow range of carbon-free operating conditions found in the ATR of number two fuel oil.

Flytzani-Stephanopoulos, M.; Voecks, G.E.

1981-12-01T23:59:59.000Z

236

Limited Commercial Maintenance (LCLM) Limited Lawn & Ornamental (LLO)  

E-Print Network [OSTI]

, Limited Commercial Landscape Maintenance, Ornamental & Turf, Private Ag, or General Standards CORE for Limited Commercial Landscape Maintenance (LCLM), you must attend all day to earn the 6 CEUs required. Limited Commercial Maintenance (LCLM) Limited Lawn & Ornamental (LLO) Training & Exams Date

Florida, University of

237

Flow reversal power limit for the HFBR  

SciTech Connect (OSTI)

The High Flux Beam Reactor (HFBR) undergoes a buoyancy-driven reversal of flow in the reactor core following certain postulated accidents. Uncertainties about the afterheat removal capability during the flow reversal has limited the reactor operating power to 30 MW. An experimental and analytical program to address these uncertainties is described in this report. The experiments were single channel flow reversal tests under a range of conditions. The analytical phase involved simulations of the tests to benchmark the physical models and development of a criterion for dryout. The criterion is then used in simulations of reactor accidents to determine a safe operating power level. It is concluded that the limit on the HFBR operating power with respect to the issue of flow reversal is in excess of 60 MW.

Cheng, Lap Y.; Tichler, P.R.

1995-10-01T23:59:59.000Z

238

Flexible high-temperature pH probe  

DOE Patents [OSTI]

A flexible pH probe device is provided for use in hot water and other high temperature environments up to about 590.degree. F. The pH probe includes a flexible, inert tubular probe member, an oxygen anion conducting, solid state electrolyte plug located at the distal end of the tubular member, oxide powder disposed at the distal end of the tubular member; a metal wire extending along the tubular member and having a distal end in contact with the oxide powder so as to form therewith an internal reference electrode; and a compression fitting forming a pressure boundary seal around a portion of the tubular member remote from the distal end thereof. Preferably, the tubular member is made of polytetrafluoroethylene, and the solid state electrolyte plug is made of stabilized zirconia. The flexibility of the probe member enables placement of the electrode into the area of interest, including around corners, into confined areas and the like.

Bielawski, John C. (Scotia, NY); Outwater, John O. (Cambridge, MA); Halbfinger, George P. (Schenectady, NY)

2003-04-22T23:59:59.000Z

239

Cost-effective particulate control options at Potomac Electric Power Company's Dickerson Station: An integrated approach to current and future particulate limits  

SciTech Connect (OSTI)

The Dickerson Generating Station evaluated several particulate control options to identify the most cost-effective option. The study's goals were to: eliminate the particulate scrubber and its high maintenance costs, and incorporate flexibility for low-sulfur coal and possible stricter emission limits. Each of the three Dickerson 190 MW units has a small 37-year-old electrostatic precipitator and a wet particulate scrubber. The study evaluated alternatives to replace the scrubber and enhance ESP performance: Existing ESP alternatives--Extend height of existing ESP; Flue gas conditioning. Scrubber stream alternatives--Partial-flow ESP or pulse jet baghouse. Full-flow alternatives--Supplemental ESP; COHPAC baghouse; replacement ESP or baghouse. A technical and economic prescreening eliminated some of the options. Capital, operating, and life cycle costs were estimated for the remaining options to determine the most cost-effective alternative. This paper will present the technical and economic evaluations done for this study, including performance and costs.

Christoffersen, S.W.; Rouse, G.T.; Krasnopoler, M.J.; Chapowski, J.A.

1998-07-01T23:59:59.000Z

240

Potential Operating Orbits for the SAFE-400  

SciTech Connect (OSTI)

Safety must be ensured during all phases of space fission system design, development, fabrication, launch, operation, and shutdown. One potential space fission system application is fission electric propulsion (FEP), in which fission energy is converted into electricity and used to power high efficiency (Isp > 3000 s) electric thrusters. For these types of systems it is important to determine which operational scenarios ensure safety while allowing maximum mission performance and flexibility. Space fission systems are essentially non-radioactive at launch, prior to extended operation at high power. Once high power operation begins, system radiological inventory steadily increases as fission products build up. For a given fission product isotope, the maximum radiological inventory is typically achieved once the system has operated for a length of time equivalent to several half-lives. After that time, the isotope decays at the same rate it is produced, and no further inventory builds in. For an FEP mission beginning in Earth orbit, altitude and orbital lifetime increase as the propulsion system operates. Two simultaneous effects of fission propulsion system operation are thus (1) increasing fission product inventory and (2) increasing orbital lifetime. Phrased differently, as fission products build up, more time is required for the fission products to naturally convert back into non-radioactive isotopes. Simultaneously, as fission products build up, orbital lifetime increases, providing more time for the fission products to naturally convert back into nonradioactive isotopes. Operational constraints required to ensure safety can thus be quantified. (authors)

Houts, Mike; Kos, Larry; Poston, David [NASA MSFC, TD40, Marshall Space Flight Center, Alabama, 35812 (United States)

2002-07-01T23:59:59.000Z

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


241

Flexible approach to the Italian cogeneration market  

SciTech Connect (OSTI)

Demand for energy is growing in Italy under new regulations issued by the Italian government in 1991 and 1992. While the national electrical authority, ENEL, is in the process of being privatized, independent power producers (IPPs) and several companies using large amounts of energy in their production processes have been active in setting up cogeneration and combined-cycle plants based purely on economics. In order to minimize emissions and make best use of fuel energy, the law commonly known as CIP 6/92 states that ENEL will grant a premium rate for electric power handled to the national grid from plants having an annual `energetic index` above 0.6, i.e., an efficiency higher than 60% measured over a one-year period. In order to benefit from the high rates granted by the law, it is necessary to build very efficient plants. Very high reliability is also required so the plan can operate at full load the year around, with only short stops for planned maintenance. This paper describes the activities of the major manufacturers of turbines in Italy.

Chellini, R.

1996-01-01T23:59:59.000Z

242

Optimally Controlled Flexible Fuel Powertrain System  

SciTech Connect (OSTI)

The primary objective of this project was to develop a true Flex Fuel Vehicle capable of running on any blend of ethanol from 0 to 85% with reduced penalty in usable vehicle range. A research and development program, targeting 10% improvement in fuel economy using a direct injection (DI) turbocharged spark ignition engine was conducted. In this project a gasoline-optimized high-technology engine was considered and the hardware and configuration modifications were defined for the engine, fueling system, and air path. Combined with a novel engine control strategy, control software, and calibration this resulted in a highly efficient and clean FFV concept. It was also intended to develop robust detection schemes of the ethanol content in the fuel integrated with adaptive control algorithms for optimized turbocharged direct injection engine combustion. The approach relies heavily on software-based adaptation and optimization striving for minimal modifications to the gasoline-optimized engine hardware system. Our ultimate objective was to develop a compact control methodology that takes advantage of any ethanol-based fuel mixture and not compromise the engine performance under gasoline operation.

Hakan Yilmaz; Mark Christie; Anna Stefanopoulou

2010-12-31T23:59:59.000Z

243

Flexible profile approach to the conjugate heat transfer problem  

E-Print Network [OSTI]

The flexible profile approach proposed earlier to create CTM (compact or reduced order thermal models) is extended to cover the area of conjugate heat transfer. The flexible profile approach is a methodology that allows building a highly boundary conditions independent CTM, with any desired degree of accuracy, that may adequately replace detailed 3D models for the whole spectrum of applications in which the modeled object may be used. The extension to conjugate problems radically solves the problem of interfacing two different domains. Each domain, fluid or solid, can be "compacted" independently creating two CTM that can be joined together to produce reliable results for any arbitrary set of external boundary conditions.

M. -N. Sabry

2008-01-07T23:59:59.000Z

244

Flexible Work Arrangements Go Outside the Box | GE Global Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds" | National Hansen 1 ,FlexibleFlexible

245

Final Technical Report, Oct 2004 - Nov. 2006, High Performance Flexible Reversible Solid Oxide Fuel Cell  

SciTech Connect (OSTI)

This report summarizes the work performed for the program entitled High Performance Flexible Reversible Solid Oxide Fuel Cell under Cooperative Agreement DE-FC36-04GO14351 for the U. S. Department of Energy. The overall objective of this project is to demonstrate a single modular stack that generates electricity from a variety of fuels (hydrogen and other fuels such as biomass, distributed natural gas, etc.) and when operated in the reverse mode, produces hydrogen from steam. This project has evaluated and selected baseline cell materials, developed a set of materials for oxygen and hydrogen electrodes, and optimized electrode microstructures for reversible solid oxide fuel cells (RSOFCs); and demonstrated the feasibility and operation of a RSOFC multi-cell stack. A 10-cell reversible SOFC stack was operated over 1000 hours alternating between fuel cell (with hydrogen and methane as fuel) and steam electrolysis modes. The stack ran very successfully with high power density of 480 mW/cm2 at 0.7V and 80% fuel utilization in fuel cell mode and >6 SLPM hydrogen production in steam electrolysis mode using about 1.1 kW electrical power. The hydrogen generation is equivalent to a specific capability of 2.59 Nm3/m2 with electrical energy demand of 3 kWh/Nm3. The performance stability in electrolysis mode was improved vastly during the program with a degradation rate reduction from 8000 to 200 mohm-cm2/1000 hrs. This was accomplished by increasing the activity and improving microstructure of the oxygen electrode. Both cost estimate and technology assessment were conducted. Besides the flexibility running under both fuel cell mode and electrolysis mode, the reversible SOFC system has the potentials for low cost and high efficient hydrogen production through steam electrolysis. The cost for hydrogen production at large scale was estimated at ~$2.7/kg H2, comparing favorably with other electrolysis techology.

Guan, Jie; Minh, Nguyen

2007-02-21T23:59:59.000Z

246

Optical limiting materials  

DOE Patents [OSTI]

Methanofullerenes, fulleroids and/or other fullerenes chemically altered for enhanced solubility, in liquid solution, and in solid blends with transparent glass (SiO{sub 2}) gels or polymers, or semiconducting (conjugated) polymers, are shown to be useful as optical limiters (optical surge protectors). The nonlinear absorption is tunable such that the energy transmitted through such blends saturates at high input energy per pulse over a wide range of wavelengths from 400--1,100 nm by selecting the host material for its absorption wavelength and ability to transfer the absorbed energy into the optical limiting composition dissolved therein. This phenomenon should be generalizable to other compositions than substituted fullerenes. 5 figs.

McBranch, D.W.; Mattes, B.R.; Koskelo, A.C.; Heeger, A.J.; Robinson, J.M.; Smilowitz, L.B.; Klimov, V.I.; Cha, M.; Sariciftci, N.S.; Hummelen, J.C.

1998-04-21T23:59:59.000Z

247

Mode K - A Core Control Logic for Enhanced Load-Follow Operations of a Pressurized Water Reactor  

SciTech Connect (OSTI)

New core control logic known as Mode K has been developed to enhance the load-follow operation (LFO) capability of a pressurized water reactor. The Mode K reactor regulating system, which actuates control bank movements, consists of two closed control loops, one for the coolant average temperature control and the other for the axial power shape control. Via its peculiar logic for selecting the control banks to be driven, the Mode K controls the coolant average temperature and axial power shape simultaneously and automatically within their allowed operating limits. In this way, the Mode K significantly reduces the operator burden associated with conventional manual power shape control during LFOs. A simple and flexible soluble boron scenario complements the Mode K logic and contributes toward reducing operational burden by its simplicity. The Mode K logic has been implanted in the Korean Next-Generation Reactor, a 1300-MW(electric) class evolutionary nuclear power plant under development in Korea, and various kinds of LFOs including frequency control have been simulated using the Framatome engineering simulator SAPHIR. The simulation results show reasonable core control performance of the Mode K as well as proper behaviors of other major nuclear steam supply system components such as the pressurizer and steam generator.

Oh, Soo-Youl [Korea Atomic Energy Research Institute (Korea, Republic of); Chang, Jonghwa [Korea Atomic Energy Research Institute (Korea, Republic of); Park, Jong-Kyun [Korea Atomic Energy Research Institute (Korea, Republic of); Carrasco, Manuel [Framatome (France)

2001-05-15T23:59:59.000Z

248

INCREASED FLEXIBILITY OF TURBO-COMPRESSORS IN NATURAL GAS TRANSMISSION THROUGH DIRECT SURGE CONTROL  

SciTech Connect (OSTI)

The objective of this Direct Surge Control project was to develop a new internal method to avoid surge of pipeline compressors. This method will safely expand the range and flexibility of compressor operations, while minimizing wasteful recycle flow at the lower end of the operating envelope. The approach is to sense the onset of surge with a probe that directly measures re-circulation at the impeller inlet. The signals from the probe are used by a controller to allow operation at low flow conditions without resorting to a predictive method requiring excessive margin to activate a recycle valve. The sensor developed and demonstrated during this project was a simple, rugged, and sensitive drag probe. Experiments conducted in a laboratory compressor clearly showed the effectiveness of the technique. Subsequent field demonstrations indicated that the increase in range without the need to recycle flow was on the order of 19% to 25%. The cost benefit of applying the direct surge control technology appears to be as much as $120 per hour per compressor for operation without the current level of recycle flow. This could amount to approximately $85 million per year for the U.S. Natural Gas Transmission industry, if direct surge control systems are applied to most pipeline centrifugal compressors.

Robert J. McKee; Shane P. Siebenaler; Danny M. Deffenbaugh

2005-02-25T23:59:59.000Z

249

The Integrated Plasma Simulator: A Flexible Python Framework for Coupled Multiphysics Simulation  

SciTech Connect (OSTI)

High-fidelity coupled multiphysics simulations are an increasingly important aspect of computational science. In many domains, however, there has been very limited experience with simulations of this sort, therefore research in coupled multiphysics often requires computational frameworks with significant flexibility to respond to the changing directions of the physics and mathematics. This paper presents the Integrated Plasma Simulator (IPS), a framework designed for loosely coupled simulations of fusion plasmas. The IPS provides users with a simple component architecture into which a wide range of existing plasma physics codes can be inserted as components. Simulations can take advantage of multiple levels of parallelism supported in the IPS, and can be controlled by a high-level ``driver'' component, or by other coordination mechanisms, such as an asynchronous event service. We describe the requirements and design of the framework, and how they were implemented in the Python language. We also illustrate the flexibility of the framework by providing examples of different types of simulations that utilize various features of the IPS.

Foley, Samantha S [ORNL; Elwasif, Wael R [ORNL; Bernholdt, David E [ORNL

2011-11-01T23:59:59.000Z

250

Implementations of a Flexible Framework for Managing Geologic Sequestration Modeling Projects  

SciTech Connect (OSTI)

Numerical simulation is a standard practice used to support designing, operating, and monitoring CO2 injection projects. Although a variety of computational tools have been developed that support the numerical simulation process, many are single-purpose or platform specific and have a prescribed workflow that may or may not be suitable for a particular project. We are developing an open-source, flexible framework named Velo that provides a knowledge management infrastructure and tools to support modeling and simulation for various types of projects in a number of scientific domains. The Geologic Sequestration Software Suite (GS3) is a version of this framework with features and tools specifically tailored for geologic sequestration studies. Because of its general nature, GS3 is being employed in a variety of ways on projects with differing goals. GS3 is being used to support the Sim-SEQ international model comparison study, by providing a collaborative framework for the modeling teams and providing tools for model comparison. Another customized deployment of GS3 has been made to support the permit application process. In this case, GS3 is being used to manage data in support of conceptual model development and provide documentation and provenance for numerical simulations. An additional customized deployment of GS3 is being created for use by the United States Environmental Protection Agency (US-EPA) to aid in the CO2 injection permit application review process in one of its regions. These use cases demonstrate GS3s flexibility, utility, and broad applicability

White, Signe K.; Gosink, Luke J.; Sivaramakrishnan, Chandrika; Black, Gary D.; Purohit, Sumit; Bacon, Diana H.; Hou, Zhangshuan; Lin, Guang; Gorton, Ian; Bonneville, Alain

2013-08-06T23:59:59.000Z

251

Termination Casts: A Flexible Approach to Termination with General Recursion  

E-Print Network [OSTI]

Termination Casts: A Flexible Approach to Termination with General Recursion Aaron Stump Computer distinguishes terminating terms and total functions from possibly diverging terms and partial functions type-form "Terminates t", expressing that term t is terminating; and then allow terms t to be coerced

Weirich, Stephanie

252

ORIGINAL PAPER Flexible product platforms: framework and case study  

E-Print Network [OSTI]

a platform design process in response to such future uncertainty. The process consists of seven iterative demand, and speci- fication changes. We show how embedding flexibility suppresses change propagation customers through high product variety. This demanded a corresponding decrease in development time

de Weck, Olivier L.

253

Modeling and Analysis of Flexible Queueing Systems Suri Gurumurthi,1  

E-Print Network [OSTI]

of Management, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 2 Graduate Program of processing more than one customer class. Customer classes can vary in demand rate and routing flexibility incoming calls can be routed. Different links may carry different capacities or provide different response

Benjaafar, Saifallah

254

IMPROVING CALIFORNIA WATER MANAGEMENT: OPTIMIZING VALUE AND FLEXIBILITY  

E-Print Network [OSTI]

are: 1) "Shortage" is an imprecise and outmoded concept for water management in California. Economicv IMPROVING CALIFORNIA WATER MANAGEMENT: OPTIMIZING VALUE AND FLEXIBILITY EXECUTIVE SUMMARY October of California http://cee.engr.ucdavis.edu/faculty/lund/CALVIN/ "When the well's dry, we know the worth of water

Pasternack, Gregory B.

255

Code: A Lightweight and Flexible Mobile Code Toolkit  

E-Print Network [OSTI]

evaluation of mobile code technology does not exist yet, some studies already evidenced that the powerful of clientserver and mobile code in reducing the network traffic generated by management. The theoreticalCode: A Lightweight and Flexible Mobile Code Toolkit Gian Pietro Picco Dip. Automatica e

Picco, Gian Pietro

256

FlexibleSUSY -- A spectrum generator generator for supersymmetric models  

E-Print Network [OSTI]

We introduce FlexibleSUSY, a Mathematica and C++ package, which generates a fast, precise C++ spectrum generator for any SUSY model specified by the user. The generated code is designed with both speed and modularity in mind, making it easy to adapt and extend with new features. The model is specified by supplying the superpotential, gauge structure and particle content in a SARAH model file; specific boundary conditions e.g. at the GUT, weak or intermediate scales are defined in a separate FlexibleSUSY model file. From these model files, FlexibleSUSY generates C++ code for self-energies, tadpole corrections, renormalization group equations (RGEs) and electroweak symmetry breaking (EWSB) conditions and combines them with numerical routines for solving the RGEs and EWSB conditions simultaneously. The resulting spectrum generator is then able to solve for the spectrum of the model, including loop-corrected pole masses, consistent with user specified boundary conditions. The modular structure of the generated code allows for individual components to be replaced with an alternative if available. FlexibleSUSY has been carefully designed to grow as alternative solvers and calculators are added. Predefined models include the MSSM, NMSSM, E$_6$SSM, USSM, R-symmetric models and models with right-handed neutrinos.

Peter Athron; Jae-hyeon Park; Dominik Stckinger; Alexander Voigt

2015-03-18T23:59:59.000Z

257

Flexible Fuel Vehicles: Providing a Renewable Fuel Choice (Revised)  

SciTech Connect (OSTI)

Clean Cities fact sheet describing aspects of flexible fuel vehicles such as use of E85, special features, benefits of use, costs, and fueling locations. It includes discussion on performance and how to identify these vehicles as well as listing additional resources.

Not Available

2008-06-01T23:59:59.000Z

258

Flexible pipe crawling device having articulated two axis coupling  

DOE Patents [OSTI]

An apparatus for moving through the linear and non-linear segments of piping systems. The apparatus comprises a front leg assembly, a rear leg assembly, a mechanism for extension and retraction of the front and rear leg assembles with respect to each other, such as an air cylinder, and a pivoting joint. One end of the flexible joint attaches to the front leg assembly and the other end to the air cylinder, which is also connected to the rear leg assembly. The air cylinder allows the front and rear leg assemblies to progress through a pipe in "inchworm" fashion, while the joint provides the flexibility necessary for the pipe crawler to negotiate non-linear piping segments. The flexible connecting joint is coupled with a spring-force suspension system that urges alignment of the front and rear leg assemblies with respect to each other. The joint and suspension system cooperate to provide a firm yet flexible connection between the front and rear leg assemblies to allow the pivoting of one with respect to the other while moving around a non-linear pipe segment, but restoring proper alignment coming out of the pipe bend.

Zollinger, William T. (Martinez, GA)

1994-01-01T23:59:59.000Z

259

Flexible pipe crawling device having articulated two axis coupling  

DOE Patents [OSTI]

An apparatus is described for moving through the linear and non-linear segments of piping systems. The apparatus comprises a front leg assembly, a rear leg assembly, a mechanism for extension and retraction of the front and rear leg assembles with respect to each other, such as an air cylinder, and a pivoting joint. One end of the flexible joint attaches to the front leg assembly and the other end to the air cylinder, which is also connected to the rear leg assembly. The air cylinder allows the front and rear leg assemblies to progress through a pipe in inchworm' fashion, while the joint provides the flexibility necessary for the pipe crawler to negotiate non-linear piping segments. The flexible connecting joint is coupled with a spring-force suspension system that urges alignment of the front and rear leg assemblies with respect to each other. The joint and suspension system cooperate to provide a firm yet flexible connection between the front and rear leg assemblies to allow the pivoting of one with respect to the other while moving around a non-linear pipe segment, but restoring proper alignment coming out of the pipe bend. 4 figures.

Zollinger, W.T.

1994-05-10T23:59:59.000Z

260

Flexible Graphene Field-Effect Transistors for Microwave Electronics  

E-Print Network [OSTI]

Flexible Graphene Field-Effect Transistors for Microwave Electronics Inanc Meric , Nicholas Petrone-frequency characteristics of graphene field-effect transistors (GFETs) has received significant interest due the very high carrier velocities in graphene. In addition to excellent electronic performance, graphene possesses

Shepard, Kenneth

Note: This page contains sample records for the topic "limited operational flexibility" 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

AITITUDE CONTROL OF FLEXIBLE COMMUNICATIONSSATELLITES Brij N. Agrawal"  

E-Print Network [OSTI]

flexible communications satellite consisting of a large reflector and a solar array. The control configurations consisted of three classes: Class 1 - sensors and actuators co-located on the central body, Class 2 - actuator on the central body and sensors distributed, and Class 3 -actuators and sensors

262

A Framework for Flexible Access Control in Digital Library Systems  

E-Print Network [OSTI]

to merely control access to documents local to the digital library. The access control policies are often called DACM (Document Access Control Methods). The basic idea is geared toward discretionary accessA Framework for Flexible Access Control in Digital Library Systems Indrajit Ray and Sudip

Ray, Indrajit

263

Towards a Flexible Model for Data and Web Services Integration  

E-Print Network [OSTI]

a new framework that allows to integrate data and services. We use a language based on XML documentsTowards a Flexible Model for Data and Web Services Integration Serge Abiteboul, Omar Benjelloun that embeds service calls within semistructured data. The framework captures various integration scenarios

Abiteboul, Serge

264

AIAA 20010064 Multi-Flexible-Body Dynamic Analysis of  

E-Print Network [OSTI]

was first presented by Warmbrodt and Friedmann.5 The cou- pled rotor/tower dynamics of wind turbineAIAA 2001­0064 Multi-Flexible-Body Dynamic Analysis of Horizontal-Axis Wind Turbines Mayuresh J-0150 ABSTRACT A dynamic stability analysis is presented for a horizontal-axis wind turbine modeled as a multi

Patil, Mayuresh

265

Forestry Internship Summer 2013 June -August (flexible dates)  

E-Print Network [OSTI]

Forestry Internship ­ Summer 2013 June - August (flexible dates) Plum Creek is the largest, private landowner in the United States with approximately 6 million acres in 19 states. We are seeking forestry to learn forestry practices from a company with a reputation for excellence earned by years of hard work

Mazzotti, Frank

266

NBER WORKING PAPER SERIES ENERGY AND GROWTH UNDER FLEXIBLE  

E-Print Network [OSTI]

increases induce a short-run production decline for given capital stock, as well as a decline in net capital of an oil price increase under flexible exchange rates, -1- #12;-2- and to solve the model by taking refuge

267

Experimental investigation of a horizontal flexible-membrane wave barrier  

E-Print Network [OSTI]

A series of experiments is conducted in a two-dimensional glass-walled wave tank to confirm numerical solutions based on two-dimensional linear hydro-elastic theory for a horizontal flexible-membrane wave barrier. The model test is performed by a...

Choi, Hae-Jin

1997-01-01T23:59:59.000Z

268

Thin, Flexible Secondary Li-Ion Paper Liangbing Hu,  

E-Print Network [OSTI]

Thin, Flexible Secondary Li-Ion Paper Batteries Liangbing Hu, Hui Wu, Fabio La Mantia, Yuan Yang, secondary Li-ion batteries are key components in por- table electronics due to their high power and energy integrated all of the components of a Li-ion battery into a single sheet of paper with a simple lamination

Cui, Yi

269

Flexible Electronic Building Blocks DOI: 10.1002/anie.200703238  

E-Print Network [OSTI]

- conductor wafers, is often measured by overall systems size, rather than the dimensions of individual-ray imagers, flexible photovoltaic systems, paper-like displays, conformal structural health monitors systems have led to enormous increases in speed, functionality, and computing capacity. This trend

Rogers, John A.

270

Business Processes, Legacy Systems and a Flexible Future  

E-Print Network [OSTI]

1 Business Processes, Legacy Systems and a Flexible Future Peter Henderson University of inter-related businesses evolving cooperatively and competitively. The challenge for IT economically and reliably. A major problem is the extent to which IT is a disabler of business process change

Henderson, Peter

271

Robust Execution of Temporally Flexible Plans for Bipedal Walking Devices  

E-Print Network [OSTI]

walking machine. An example task for such a system is to walk to a soccer ball and kick it, as shown 02139 hofma@csail.mit.edu, williams@mit.edu Abstract Robotic wheeled rovers have been successfully controlled by activity execution systems that use plans with temporal flexibility to adapt to disturbances

Williams, Brian C.

272

Bayesian Flexible Shape Matching with Applications to Structural Proteomics  

E-Print Network [OSTI]

and an associated Procrustes-type metric, along with a highly efficient algorithm for computing flexible shape for several variants including both affine and rigid-body component transformations. We demonstrate; Stoyan et al., 1995; Small, 1996; Dry- den and Mardia, 1998; Kendall et al., 1999). In this paper we

Schmidler, Scott

273

PROTECTING AMERICA'S WETLANDS: A FAIR, FLEXIBLE, AND EFFECTIVE APPROACH  

E-Print Network [OSTI]

PROTECTING AMERICA'S WETLANDS: A FAIR, FLEXIBLE, AND EFFECTIVE APPROACH WHITE HOUSE OFFICE. The Interagency Working Group on Federal Wetlands Policy IV. Five Principles for Federal Wetlands Policy V wetlands program that reflects a new broad-based consensus among Federal agencies. For years, many have

US Army Corps of Engineers

274

HCCI Load Expansion Opportunities Using a Fully Variable HVA Research Engine to Guide Developments of a Production Intent Cam-Based VVA Engine: The Low Load Limit  

SciTech Connect (OSTI)

While the potential emissions and efficiency benefits of HCCI combustion are well known, realizing the potentials on a production intent engine presents numerous challenges. In this study we focus on identifying challenges and opportunities associated with a production intent cam-based variable valve actuation (VVA) system on a multi-cylinder engine in comparison to a fully flexible, naturally aspirated, hydraulic valve actuation (HVA) system on a single-cylinder engine, with both platforms sharing the same GDI fueling system and engine geometry. The multi-cylinder production intent VVA system uses a 2-step cam technology with wide authority cam phasing, allowing adjustments to be made to the negative valve overlap (NVO) duration but not the valve opening durations. On the single cylinder HVA engine, the valve opening duration and lift are variable in addition to the NVO duration. The content of this paper is limited to the low-medium operating load region at 2000rpm. Using different injection strategies, including the NVO pilot injection approach, the single-cylinder engine is operated over a load range from 160-390 kPa net IMEP at 2000 rpm. Changes to valve opening duration on the single-cylinder HVA engine illustrate opportunities for load expansion and efficiency improvement at certain conditions. For instance, the low load limit can be extended on the HVA engine by reducing breathing and operating closer to a stoichiometric air fuel ratio (AFR) by using valve deactivation. The naturally aspirated engine used here without external EGR confirmed that as operating load increases the emissions of NOx increases due to combustion temperature. NOx emissions are found to be one limitation to the maximum load limitation, the other being high pressure rise rate. It is found that the configuration of the production intent cam-based system represents a good compromise between valve lift and duration in the low to medium load region. Changing the extent of charge motion and breathing via valve deactivation prove beneficial at moderating the pressure rise rate and combustion stability and extending the low load limit at 2000rpm on the HVA engine. It also confirms that strategies using a pilot fuel injection are beneficial at low operating loads but that as operating load is increased, the benefits of multiple injection diminish to the point where a single injection offers the best performance.

Weall, Adam J [ORNL; Szybist, James P [ORNL; Edwards, Kevin Dean [ORNL; Foster, Matthew [Delphi; Confer, Keith [Delphi; Moore, Wayne [Delphi

2012-01-01T23:59:59.000Z

275

HCCI Load Expansion Opportunities using a Fully Variable HVA Research Engine to Guide Development of a Production Intent Cam-based VVA Engine: The Low Load Limit  

SciTech Connect (OSTI)

While the potential emissions and efficiency benefits of HCCI combustion are well known, realizing the potentials on a production intent engine presents numerous challenges. In this study we focus on identifying challenges and opportunities associated with a production intent cam-based variable valve actuation (VVA) system on a multi-cylinder engine in comparison to a fully flexible, naturally aspirated, hydraulic valve actuation (HVA) system on a single-cylinder engine, with both platforms sharing the same GDI fueling system and engine geometry. The multi-cylinder production intent VVA system uses a 2-step cam technology with wide authority cam phasing, allowing adjustments to be made to the negative valve overlap (NVO) duration but not the valve opening durations. On the single cylinder HVA engine, the valve opening duration and lift are variable in addition to the NVO duration. The content of this paper is limited to the low-medium operating load region at 2000rpm. Using different injection strategies, including the NVO pilot injection approach, the single-cylinder engine is operated over a load range from 160-390 kPa net IMEP at 2000 rpm. Changes to valve opening duration on the single-cylinder HVA engine illustrate opportunities for load expansion and efficiency improvement at certain conditions. For instance, the low load limit can be extended on the HVA engine by reducing breathing and operating closer to a stoichiometric air fuel ratio (AFR) by using valve deactivation. The naturally aspirated engine used here without external EGR confirmed that as operating load increases the emissions of NOx increases due to combustion temperature. NOx emissions are found to be one limitation to the maximum load limitation, the other being high pressure rise rate. It is found that the configuration of the production intent cam-based system represents a good compromise between valve lift and duration in the low to medium load region. Changing the extent of charge motion and breathing via valve deactivation prove beneficial at moderating the pressure rise rate and combustion stability and extending the low load limit at 2000rpm on the HVA engine. It also confirms that strategies using a pilot fuel injection are beneficial at low operating loads but that as operating load is increased, the benefits of multiple injection diminish to the point where a single injection offers the best performance.

Weall, Adam J [ORNL] [ORNL; Szybist, James P [ORNL] [ORNL; Edwards, Kevin Dean [ORNL] [ORNL; Foster, Matthew [Delphi] [Delphi; Confer, Keith [Delphi] [Delphi; Moore, Wayne [Delphi] [Delphi

2012-01-01T23:59:59.000Z

276

OPERATION OF SOLID OXIDE FUEL CELL ANODES WITH PRACTICAL HYDROCARBON FUELS  

SciTech Connect (OSTI)

This work was carried out to achieve a better understanding of how SOFC anodes work with real fuels. The motivation was to improve the fuel flexibility of SOFC anodes, thereby allowing simplification and cost reduction of SOFC power plants. The work was based on prior results indicating that Ni-YSZ anode-supported SOFCs can be operated directly on methane and natural gas, while SOFCs with novel anode compositions can work with higher hydrocarbons. While these results were promising, more work was clearly needed to establish the feasibility of these direct-hydrocarbon SOFCs. Basic information on hydrocarbon-anode reactions should be broadly useful because reformate fuel gas can contain residual hydrocarbons, especially methane. In the Phase I project, we have studied the reaction mechanisms of various hydrocarbons--including methane, natural gas, and higher hydrocarbons--on two kinds of Ni-containing anodes: conventional Ni-YSZ anodes and a novel ceramic-based anode composition that avoid problems with coking. The effect of sulfur impurities was also studied. The program was aimed both at achieving an understanding of the interactions between real fuels and SOFC anodes, and providing enough information to establish the feasibility of operating SOFC stacks directly on hydrocarbon fuels. A combination of techniques was used to provide insight into the hydrocarbon reactions at these anodes during SOFC operation. Differentially-pumped mass spectrometry was be used for product-gas analysis both with and without cell operation. Impedance spectroscopy was used in order to understand electrochemical rate-limiting steps. Open-circuit voltages measurements under a range of conditions was used to help determine anode electrochemical reactions. Life tests over a wide range of conditions were used to establish the conditions for stable operation of anode-supported SOFC stacks directly on methane. Redox cycling was carried out on ceramic-based anodes. Tests on sulfur tolerance of Ni-YSZ anodes were carried out.

Scott A. Barnett; Jiang Liu; Yuanbo Lin

2004-07-30T23:59:59.000Z

277

Heat flux limiting sleeves  

DOE Patents [OSTI]

A heat limiting tubular sleeve extending over only a portion of a tube having a generally uniform outside diameter, the sleeve being open on both ends, having one end thereof larger in diameter than the other end thereof and having a wall thickness which decreases in the same direction as the diameter of the sleeve decreases so that the heat transfer through the sleeve and tube is less adjacent the large diameter end of the sleeve than adjacent the other end thereof.

Harris, William G. (Tampa, FL)

1985-01-01T23:59:59.000Z

278

Utilization of Minor Actinides as a Fuel Component for Ultra-Long Life Bhr Configurations: Designs, Advantages and Limitations  

SciTech Connect (OSTI)

This project assessed the advantages and limitations of using minor actinides as a fuel component to achieve ultra-long life Very High Temperature Reactor (VHTR) configurations. Researchers considered and compared the capabilities of pebble-bed and prismatic core designs with advanced actinide fuels to achieve ultra-long operation without refueling. Since both core designs permit flexibility in component configuration, fuel utilization, and fuel management, it is possible to improve fissile properties of minor actinides by neutron spectrum shifting through configuration adjustments. The project studied advanced actinide fuels, which could reduce the long-term radio-toxicity and heat load of high-level waste sent to a geologic repository and enable recovery of the energy contained in spent fuel. The ultra-long core life autonomous approach may reduce the technical need for additional repositories and is capable to improve marketability of the Generation IV VHTR by allowing worldwide deployment, including remote regions and regions with limited industrial resources. Utilization of minor actinides in nuclear reactors facilitates developments of new fuel cycles towards sustainable nuclear energy scenarios.

Dr. Pavel V. Tsvetkov

2009-05-20T23:59:59.000Z

279

On the limiting absorption principle and spectra of quantum graphs  

E-Print Network [OSTI]

The main result of the article is validity of the limiting absorption principle and thus absence of the singular continuous spectrum for compact quantum graphs with several infinite leads attached. The technique used involves Dirichlet-to-Neumann operators.

Beng-Seong Ong

2005-10-10T23:59:59.000Z

280

Cw rf operation of the FMIT RFQ  

SciTech Connect (OSTI)

The 80-MHz RFQ for the Fusion Materials Irradiation Test Facility prototype accelerator has been rf conditioned for cw operation to the design field level of 17.5 MV/m (1.68 x Kilpatrick limit). Experimental results and operating experience will be discussed.

Fazio, M.V.; Brandeberry, F.E.

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

assisted lean operation: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Portman, Douglas 31 Combustion lean limits fundamentals and their application to a SI hydrogen-enhanced engine concept MIT - DSpace Summary: Operating an engine with excess...

282

Hermitian Young operators  

SciTech Connect (OSTI)

Starting from conventional Young operators, we construct Hermitian operators which project orthogonally onto irreducible representations of the (special) unitary group.

Keppeler, Stefan, E-mail: stefan.keppeler@uni-tuebingen.de [Mathematisches Institut, Universitt Tbingen, Auf der Morgenstelle 10, 72076 Tbingen (Germany)] [Mathematisches Institut, Universitt Tbingen, Auf der Morgenstelle 10, 72076 Tbingen (Germany); Sjdahl, Malin, E-mail: malin.sjodahl@thep.lu.se [Department of Astronomy and Theoretical Physics, Lund University, Slvegatan 14A, 22362 Lund (Sweden)] [Department of Astronomy and Theoretical Physics, Lund University, Slvegatan 14A, 22362 Lund (Sweden)

2014-02-15T23:59:59.000Z

283

Vortex-induced vibration of flexible cylinders in time-varying flows  

E-Print Network [OSTI]

This thesis investigates two aspects of Vortex-Induced Vibrations (VIV) on long flexible cylinders. The work is split into a minor and major part. The minor part addresses the effect of Reynolds number on flexible cylinder ...

Resvanis, Themistocles L

2014-01-01T23:59:59.000Z

284

Three-dimensional vortical structures in the wake of a flexible flapping foil  

E-Print Network [OSTI]

This project aims to gain a qualitative view of the three-dimensional vortical structures of a flexible flapping foil at Reynolds number 164. Flexible foils were fabricated, coated with fluorescent dye, and towed with heave ...

Krueger, Matthew J

2005-01-01T23:59:59.000Z

285

Transactional Patterns: Combining Workflow Flexibility and Transactional Reliability for Composite Web  

E-Print Network [OSTI]

Transactional Patterns: Combining Workflow Flexibility and Transactional Reliability for Composite compositions. We introduce a new concept called transactional patterns to specify flexible and reliable composite Web services. A transactional pattern is a convergence concept between workflow patterns

Paris-Sud XI, Université de

286

Numerical models for scoring failures of flexible metal to metal face seals  

E-Print Network [OSTI]

The flexible metal to metal face seals (FMMFS) has unique features including much more flexibility in the circumferential direction than in the radial direction, identical rotating and stationary seals, and a loading ...

Hong, Jinchul, 1977-

2005-01-01T23:59:59.000Z

287

Fuel Flexible, Low Emission Catalytic Combustor for Opportunity Fuel Applications  

SciTech Connect (OSTI)

Limited fuel resources, increasing energy demand and stringent emission regulations are drivers to evaluate process off-gases or process waste streams as fuels for power generation. Often these process waste streams have low energy content and/or highly reactive components. Operability of low energy content fuels in gas turbines leads to issues such as unstable and incomplete combustion. On the other hand, fuels containing higher-order hydrocarbons lead to flashback and auto-ignition issues. Due to above reasons, these fuels cannot be used directly without modifications or efficiency penalties in gas turbine engines. To enable the use of these wide variety of fuels in gas turbine engines a rich catalytic lean burn (RCL) combustion system was developed and tested in a subscale high pressure (10 atm.) rig. The RCL injector provided stability and extended turndown to low Btu fuels due to catalytic pre-reaction. Previous work has shown promise with fuels such as blast furnace gas (BFG) with LHV of 85 Btu/ft3 successfully combusted. This program extends on this work by further modifying the combustor to achieve greater catalytic stability enhancement. Fuels containing low energy content such as weak natural gas with a Lower Heating Value (LHV) of 6.5 MJ/m3 (180 Btu/ft3 to natural gas fuels containing higher hydrocarbon (e.g ethane) with LHV of 37.6 MJ/m3 (1010 Btu/ft3) were demonstrated with improved combustion stability; an extended turndown (defined as the difference between catalytic and non-catalytic lean blow out) of greater than 250oF was achieved with CO and NOx emissions lower than 5 ppm corrected to 15% O2. In addition, for highly reactive fuels the catalytic region preferentially pre-reacted the higher order hydrocarbons with no events of flashback or auto-ignition allowing a stable and safe operation with low NOx and CO emissions.

Eteman, Shahrokh

2013-06-30T23:59:59.000Z

288

Ancilla-assisted sequential approximation of nonlocal unitary operations  

SciTech Connect (OSTI)

We consider the recently proposed (no-go) theorem of Lamata et al.[Phys. Rev. Lett. 101, 180506 (2008)] on the impossibility of sequential implementation of global unitary operations with the aid of an itinerant ancillary system and view the claim within the language of Kraus representation. By virtue of an extremely useful tool for analyzing entanglement properties of quantum operations, namely, operator-Schmidt decomposition, we provide alternative proof to the no-go theorem and also study the role of initial correlations between the qubits and ancilla in sequential preparation of unitary entanglers. Despite the negative response from the no-go theorem, we demonstrate explicitly how the matrix-product operator (MPO) formalism provides a flexible structure to develop protocols for sequential implementation of such entanglers with an optimal fidelity. The proposed numerical technique, which we call variational matrix-product operator (VMPO), offers a computationally efficient tool for characterizing the ''globalness'' and entangling capabilities of nonlocal unitary operations.

Saberi, Hamed [Institute for Theoretical Physics, University of Regensburg, D-93040 Regensburg (Germany); Physics Department, Arnold Sommerfeld Center for Theoretical Physics, and Center for NanoScience, Ludwig-Maximilians-Universitaet, Theresienstrasse 37, D-80333 Munich (Germany); Department of Physics, Shahid Beheshti University, General Campus, Evin, Tehran 19839 (Iran, Islamic Republic of)

2011-09-15T23:59:59.000Z

289

Importance of Flexible Electricity Supply: Solar Integration Series. 1 of 3 (Brochure)  

SciTech Connect (OSTI)

The first out of a series of three fact sheets describing the importance of flexible electricity supply.

Not Available

2011-05-01T23:59:59.000Z

290

Fault current limiter  

DOE Patents [OSTI]

A fault current limiter (FCL) includes a series of high permeability posts for collectively define a core for the FCL. A DC coil, for the purposes of saturating a portion of the high permeability posts, surrounds the complete structure outside of an enclosure in the form of a vessel. The vessel contains a dielectric insulation medium. AC coils, for transporting AC current, are wound on insulating formers and electrically interconnected to each other in a manner such that the senses of the magnetic field produced by each AC coil in the corresponding high permeability core are opposing. There are insulation barriers between phases to improve dielectric withstand properties of the dielectric medium.

Darmann, Francis Anthony

2013-10-08T23:59:59.000Z

291

Limited Distribution Notice  

E-Print Network [OSTI]

This report has been submitted for publication outside of IBM and will probably be copyrighted is accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g., payment of royalties). Some reports are available at

Josh Hailpern; John Jay High; Charles C. Palmer

292

Process Limits on Euclid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar Home DesignPresentationsSRS RespondsLift Plan ProcedureProcess Limits

293

Fundamental Drivers of the Cost and Price of Operating Reserves  

SciTech Connect (OSTI)

Operating reserves impose a cost on the electric power system by forcing system operators to keep partially loaded spinning generators available for responding to system contingencies variable demand. In many regions of the United States, thermal power plants provide a large fraction of the operating reserve requirement. Alternative sources of operating reserves, such as demand response and energy storage, may provide more efficient sources of these reserves. However, to estimate the potential value of these services, the cost of reserve services under various grid conditions must first be established. This analysis used a commercial grid simulation tool to evaluate the cost and price of several operating reserve services, including spinning contingency reserves and upward regulation reserves. These reserve products were evaluated in a utility system in the western United States, considering different system flexibilities, renewable energy penetration, and other sensitivities. The analysis demonstrates that the price of operating reserves depend highly on many assumptions regarding the operational flexibility of the generation fleet, including ramp rates and the fraction of fleet available to provide reserves.

Hummon, M. R.; Denholm, P.; Jorgenson, J.; Palchak, D.; Kirby, B.; Ma, O.

2013-07-01T23:59:59.000Z

294

GEOMETRIC CHARACTERIZATION AND OPTIMIZATION OF 3D ORGANIC FLEXIBLE SOLAR CELLS  

E-Print Network [OSTI]

GEOMETRIC CHARACTERIZATION AND OPTIMIZATION OF 3D ORGANIC FLEXIBLE SOLAR CELLS Characterization and Optimization of 3D Organic Flexible Solar Cells by Ashish K. Gaikwad Master of Science of flexible organic solar cells, micro-fabricated using novel microfabrication procedures. A fully functional

Kassegne, Samuel Kinde

295

SCALING-UP OF NEW GENERATION OF 3D FLEXIBLE ORGANIC SOLAR CELLS  

E-Print Network [OSTI]

SCALING-UP OF NEW GENERATION OF 3D FLEXIBLE ORGANIC SOLAR CELLS _______________ A Thesis Presented Generation of 3D Flexible Organic Solar Cell _____________________________________________ Samuel Kinde Engineering San Diego State University, 2012 Scaling-up of New Generation of 3D Flexible Organic Solar Cells

Kassegne, Samuel Kinde

296

Flexible semi-transparent organic spin valve based on bathocuproine  

SciTech Connect (OSTI)

Organic semiconductors are attractive materials for advanced spintronic applications due to their long spin lifetimes and, simultaneously, their mechanical flexibility. With the aim of combining these advantages in a single device, we report on the fabrication and properties of a mechanically flexible bathocuproine-based spin valve. This organic spin device shows great stability on both electrical and magneto-transport properties upon mechanical bending at different radius (up to r?=?5?mm), while featuring long-lasting endurance (on bending over 50 times). The room-temperature magnetoresistance ratio reaches up to 3.5%, and is notably preserved under air atmosphere. The observation of spin transport at room-temperature, combined with the outstanding mechanical properties and air stability, highlights the potential of bathocuproine-based spin devices towards applications.

Sun, Xiangnan; Bedoya-Pinto, Amilcar; Llopis, Roger [CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia San Sebastian (Spain); Casanova, Flix; Hueso, Luis E., E-mail: l.hueso@nanogune.eu [CIC nanoGUNE, Tolosa Hiribidea 76, 20018 Donostia San Sebastian (Spain); IKERBASQUE, Basque Foundation for Science, 48011 Bilbao (Spain)

2014-08-25T23:59:59.000Z

297

Mechanically flexible organic electroluminescent device with directional light emission  

DOE Patents [OSTI]

A mechanically flexible and environmentally stable organic electroluminescent ("EL") device with directional light emission comprises an organic EL member disposed on a flexible substrate, a surface of which is coated with a multilayer barrier coating which includes at least one sublayer of a substantially transparent organic polymer and at least one sublayer of a substantially transparent inorganic material. The device includes a reflective metal layer disposed on the organic EL member opposite to the substrate. The reflective metal layer provides an increased external quantum efficiency of the device. The reflective metal layer and the multilayer barrier coating form a seal around the organic EL member to reduce the degradation of the device due to environmental elements.

Duggal, Anil Raj; Shiang, Joseph John; Schaepkens, Marc

2005-05-10T23:59:59.000Z

298

Flexible fiber batteries for applications in smart textiles  

E-Print Network [OSTI]

Here we discuss two alternative approaches for building flexible batteries for applications in smart textiles. The first approach uses well-studied inorganic electrochemistry (Al-NaOCl galvanic cell) and innovative packaging in order to produce batteries in a slender and flexible fiber form that can be further weaved directly into the textiles. During fabrication process the battery electrodes are co-drawn within a microstructured polymer fiber, which is later filled with liquid electrolyte. The second approach describes Li-ion chemistry within solid polymer electrolytes that are used to build a fully solid and soft rechargeable battery that can be furthermore stitched onto a textile, or integrated as stripes during weaving process.

Qu, Hang; Rolland, Julien; Vlad, Alexandru; Gohy, Jean-Franois; Skorobogatiy, Maksim

2013-01-01T23:59:59.000Z

299

(Limiting the greenhouse effect)  

SciTech Connect (OSTI)

Traveler attended the Dahlem Research Conference organized by the Freien Universitat, Berlin. The subject of the conference was Limiting the Greenhouse Effect: Options for Controlling Atmospheric CO{sub 2} Accumulation. Like all Dahlem workshops, this was a meeting of scientific experts, although the disciplines represented were broader than usual, ranging across anthropology, economics, international relations, forestry, engineering, and atmospheric chemistry. Participation by scientists from developing countries was limited. The conference was divided into four multidisciplinary working groups. Traveler acted as moderator for Group 3 which examined the question What knowledge is required to tackle the principal social and institutional barriers to reducing CO{sub 2} emissions'' The working rapporteur was Jesse Ausubel of Rockefeller University. Other working groups examined the economic costs, benefits, and technical feasibility of options to reduce emissions per unit of energy service; the options for reducing energy use per unit of GNP; and the significant of linkage between strategies to reduce CO{sub 2} emissions and other goals. Draft reports of the working groups are appended. Overall, the conference identified a number of important research needs in all four areas. It may prove particularly important in bringing the social and institutional research needs relevant to climate change closer to the forefront of the scientific and policy communities than hitherto.

Rayner, S.

1991-01-07T23:59:59.000Z

300

Semiconductor-based, large-area, flexible, electronic devices  

SciTech Connect (OSTI)

Novel articles and methods to fabricate the same resulting in flexible, large-area, triaxially textured, single-crystal or single-crystal-like, semiconductor-based, electronic devices are disclosed. Potential applications of resulting articles are in areas of photovoltaic devices, flat-panel displays, thermophotovoltaic devices, ferroelectric devices, light emitting diode devices, computer hard disc drive devices, magnetoresistance based devices, photoluminescence based devices, non-volatile memory devices, dielectric devices, thermoelectric devices and quantum dot laser devices.

Goyal, Amit (Knoxville, TN)

2011-03-15T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Measure Guideline: Optimizing the Configuration of Flexible Duct Junction Boxes  

SciTech Connect (OSTI)

This measure guideline offers additional recommendations to heating, ventilation, and air conditioning (HVAC) system designers for optimizing flexible duct, constant-volume HVAC systems using junction boxes within Air Conditioning Contractors of America (ACCA) Manual D guidance (Rutkowski, H. Manual D -- Residential Duct Systems, 3rd edition, Version 1.00. Arlington, VA: Air Conditioning Contractors of America, 2009.). IBACOS used computational fluid dynamics software to explore and develop guidance to better control the airflow effects of factors that may impact pressure losses within junction boxes among various design configurations (Beach, R., Prahl, D., and Lange, R. CFD Analysis of Flexible Duct Junction Box Design. Golden, CO: National Renewable Energy Laboratory, submitted for publication 2013). These recommendations can help to ensure that a system aligns more closely with the design and the occupants' comfort expectations. Specifically, the recommendations described herein show how to configure a rectangular box with four outlets, a triangular box with three outlets, metal wyes with two outlets, and multiple configurations for more than four outlets. Designers of HVAC systems, contractors who are fabricating junction boxes on site, and anyone using the ACCA Manual D process for sizing duct runs will find this measure guideline invaluable for more accurately minimizing pressure losses when using junction boxes with flexible ducts.

Beach, R.; Burdick, A.

2014-03-01T23:59:59.000Z

302

Compression effects on pressure loss in flexible HVAC ducts  

SciTech Connect (OSTI)

A study was conducted to evaluate the effect of compression on pressure drop in flexible, spiral wire helix core ducts used in residential and light commercial applications. Ducts of 6 inches, 8 inches and 10 inches (150, 200 and 250 mm) nominal diameters were tested under different compression configurations following ASHRAE Standard 120-1999--Methods of Testing to Determine Flow Resistance of HVAC Air Ducts and Fittings. The results showed that the available published references tend to underestimate the effects of compression. The study demonstrated that moderate compression in flexible ducts, typical of that often seen in field installations, could increase the pressure drop by a factor of four, while further compression could increase the pressure drop by factors close to ten. The results proved that the pressure drop correction factor for compressed ducts cannot be independent of the duct size, as suggested by ASHRAE Fundamentals, and therefore a new relationship was developed for better quantification of the pressure drop in flexible ducts. This study also suggests potential improvements to ASHRAE Standard 120-1999 and provides new data for duct design.

Abushakra, Bass; Walker, Iain S.; Sherman, Max H.

2002-07-01T23:59:59.000Z

303

RELIABLE RADIOGRAPHIC INSPECTION OF FLEXIBLE RISERS FOR THE OIL INDUSTRY  

SciTech Connect (OSTI)

Flexible risers are composite tubular structures manufactured by the concentric assemblage of cylindrical polymeric and helically wound metallic layers employed to convey pressurized fluids such as oil, gas and water in the ocean environment. The metallic layers account for the flexible risers' structural strength and are dimensioned according to the static and dynamic loads. They are usually installed in a free hanging catenary configuration and are subjected to the direct action of waves and marine currents and wave induced motions from the oil production platform. The fatigue rupture of wire armours in the end fitting or within the riser segment protected by the bend stiffener is an object of major concern. Integrity models have been developed, however inspection techniques are mandatory to ensure that failure is detected. Gammagraphy has been used as a common inspection technique in all regions of the flexible riser, mainly with the single wall-single view method. On the other side, there is not any qualified radiographic procedure to this kind of structure. Radiographic simulation was adopted and its validation with actual gammagraphies and establishment of radiographic parameters to complex radiation geometries were done. Results show the viability of the radiographic inspection analyzing the armour wires' rupture and the displacement between wires.

Almeida, Romulo M.; Rebello, Joao Marcos A. [Department of Metallurgical and Materials Engineering COPPE/UFRJ-Federal University of Rio de Janeiro P.O. Box 68505 CEP 21941-972, Rio de Janeiro RJ (Brazil); Vaz, Murilo A. [Department of Ocean Engineering-COPPE/UFRJ (Brazil)

2010-02-22T23:59:59.000Z

304

Using Energy Management Control Systems for HVAC Operational Diagnostics  

E-Print Network [OSTI]

USING ENERGY MANAGEMENT CONTROL SYSTEMS FOR HVAC OPERATIONAL DIAGNOSTICS Karl Stum, P.E. Portland Energy Conservation, Inc. 92 1 SW Washington, Suite 3 12 Portland, OR 97205 503-248-4636 Fax 503-295-0820 ABSTRACT The power and flexibility... Proceedings, June 1997. Meyers, S.; E. Mills; A. Chen; L. Demsetz "Building Data Visualization for Diagnostics," ASHRAE Journal, June 1996. PECl (Portland Energy Conservation, Inc.). Energy Management C0ntrof Systems-A Practical Guiak, 1997. Sparks, R...

Stum, K.

1998-01-01T23:59:59.000Z

305

Multiscale multiphysics and multidomain modelsFlexibility and rigidity  

SciTech Connect (OSTI)

The emerging complexity of large macromolecules has led to challenges in their full scale theoretical description and computer simulation. Multiscale multiphysics and multidomain models have been introduced to reduce the number of degrees of freedom while maintaining modeling accuracy and achieving computational efficiency. A total energy functional is constructed to put energies for polar and nonpolar solvation, chemical potential, fluid flow, molecular mechanics, and elastic dynamics on an equal footing. The variational principle is utilized to derive coupled governing equations for the above mentioned multiphysical descriptions. Among these governing equations is the Poisson-Boltzmann equation which describes continuum electrostatics with atomic charges. The present work introduces the theory of continuum elasticity with atomic rigidity (CEWAR). The essence of CEWAR is to formulate the shear modulus as a continuous function of atomic rigidity. As a result, the dynamics complexity of a macromolecular system is separated from its static complexity so that the more time-consuming dynamics is handled with continuum elasticity theory, while the less time-consuming static analysis is pursued with atomic approaches. We propose a simple method, flexibility-rigidity index (FRI), to analyze macromolecular flexibility and rigidity in atomic detail. The construction of FRI relies on the fundamental assumption that protein functions, such as flexibility, rigidity, and energy, are entirely determined by the structure of the protein and its environment, although the structure is in turn determined by all the interactions. As such, the FRI measures the topological connectivity of protein atoms or residues and characterizes the geometric compactness of the protein structure. As a consequence, the FRI does not resort to the interaction Hamiltonian and bypasses matrix diagonalization, which underpins most other flexibility analysis methods. FRI's computational complexity is of O(N{sup 2}) at most, where N is the number of atoms or residues, in contrast to O(N{sup 3}) for Hamiltonian based methods. We demonstrate that the proposed FRI gives rise to accurate prediction of protein B-Factor for a set of 263 proteins. We show that a parameter free FRI is able to achieve about 95% accuracy of the parameter optimized FRI. An interpolation algorithm is developed to construct continuous atomic flexibility functions for visualization and use with CEWAR.

Xia, Kelin [Department of Mathematics, Michigan State University, East Lansing, Michigan 48824 (United States)] [Department of Mathematics, Michigan State University, East Lansing, Michigan 48824 (United States); Opron, Kristopher [Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824 (United States)] [Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824 (United States); Wei, Guo-Wei, E-mail: wei@math.msu.edu [Department of Mathematics, Michigan State University, East Lansing, Michigan 48824 (United States) [Department of Mathematics, Michigan State University, East Lansing, Michigan 48824 (United States); Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824 (United States); Department of Electrical and Computer Engineering, Michigan State University, East Lansing, Michigan 48824 (United States)

2013-11-21T23:59:59.000Z

306

Operating Permits (New Jersey)  

Broader source: Energy.gov [DOE]

The owner or operator of a facility subject to this article shall obtain and maintain an operating permit for the facility. The owner or operator of a facility subject to this article shall ensure...

307

Cogeneration Operational Issues  

E-Print Network [OSTI]

operations. Other operational issues also include utility transmission planning, generation planning and fuel mix decisions. All of these operational problems have an impact on the ratepayer in regard to quality of electric service and future rates. Both...

Williams, M.

308

Air Carrier Flight Operations  

E-Print Network [OSTI]

Most air carriers operate under a system of prioritized goals including safety, customer service (on-time departures and arrivals) and operating economics. The flight operations department is responsible for the safe and ...

Midkif, Alan H.

309

Heat Transfer Operators Associated with Quantum Operations  

E-Print Network [OSTI]

Any quantum operation applied on a physical system is performed as a unitary transformation on a larger extended system. If the extension used is a heat bath in thermal equilibrium, the concomitant change in the state of the bath necessarily implies a heat exchange with it. The dependence of the average heat transferred to the bath on the initial state of the system can then be found from the expectation value of a hermitian operator, which is named as the heat transfer operator (HTO). The purpose of this article is the investigation of the relation between the HTOs and the associated quantum operations. Since, any given quantum operation on a system can be realized by different baths and unitaries, many different HTOs are possible for each quantum operation. On the other hand, there are also strong restrictions on the HTOs which arise from the unitarity of the transformations. The most important of these is the Landauer erasure principle. This article is concerned with the question of finding a complete set of restrictions on the HTOs that are associated with a given quantum operation. An answer to this question has been found only for a subset of quantum operations. For erasure operations, these characterizations are equivalent to the generalized Landauer erasure principle. For the case of generic quantum operations however, it appears that the HTOs obey further restrictions which cannot be obtained from the entropic restrictions of the generalized Landauer erasure principle.

. Aksak; S. Turgut

2011-04-14T23:59:59.000Z

310

Building Operator Certification  

E-Print Network [OSTI]

Building Operator Certification Energy Efficiency through Operator Training CATEE December 18, 2013 San Antonio, TX Dennis Lilley, CEM, PMP ESL-KT-13-12-49 CATEE 2013: Clean Air Through Energy Efficiency Conference, San Antonio, Texas Dec. 16...-18 Building Operator Certification Energy Efficiency through Operator Training What is Building Operator Certification? Industry-recognized credential in energy efficient building operation practices Created with 100 industry experts Launched in 1996 9...

Lilley, D.

2013-01-01T23:59:59.000Z

311

AVESTAR Center for clean energy plant operators of the future  

SciTech Connect (OSTI)

Clean energy plants in the modern grid era will increasingly exploit carbon capture, utilization, and storage (CCUS), fuel/product flexibility, and load following. Integrated power/process plants will require next generation of well-trained engineering and operations professionals. High-fidelity dynamic simulators are well suited for training, education, and R&D on clean energy plant operations. Combining Operator Training System (OTS) with 3D virtual Immersive Training System (ITS) enables simultaneous training of control room and plant field operators of the future. Strong collaboration between industry, academia, and government is required to address advanced R&D challenges. AVESTAR Center brings together simulation technology and world-class expertise focused on accelerating development of clean energy plants and operators of the future.

Zitney, S.

2012-01-01T23:59:59.000Z

312

Operations Research Analyst  

Broader source: Energy.gov [DOE]

The incumbent in this position will serve as an Operations Research Analyst in the Generation Scheduling (PGS). The Operations Research Analyst is responsible for analytical work that involves...

313

Title 10 USC 2684a Agreements to Limit Encroachments and Other...  

Open Energy Info (EERE)

Agreements to Limit Encroachments and Other Constraints on Military Training, Testing, and Operations Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal...

314

FED pumped limiter configuration issues  

SciTech Connect (OSTI)

Impurity control in the Fusion Engineering Device (FED) is provided by a toroidal belt pumped limiter. Limiter design issues addressed in this paper are (1) poloidal location of the limiter belt, (2) shape of the limiter surface facing the plasma, and (3) whether the belt is pumped from one or both sides. The criteria used for evaluation of limiter configuration features were sensitivity to plasma-edge conditions and ease of maintenance and fabrication. The evaluation resulted in the selection of a baseline FED limiter that is located at the bottom of the device and has a flat surface with a single leading edge.

Haines, J.R.; Fuller, G.M.

1983-01-01T23:59:59.000Z

315

A brightness exceeding simulated Langmuir limit  

SciTech Connect (OSTI)

When an excitation of the first lens determines a beam is parallel beam, a brightness that is 100 times higher than Langmuir limit is measured experimentally, where Langmuir limits are estimated using a simulated axial cathode current density which is simulated based on a measured emission current. The measured brightness is comparable to Langmuir limit, when the lens excitation is such that an image position is slightly shorter than a lens position. Previously measured values of brightness for cathode apical radii of curvature 20, 60, 120, 240, and 480 ?m were 8.7, 5.3, 3.3, 2.4, and 3.9 times higher than their corresponding Langmuir limits, respectively, in this experiment, the lens excitation was such that the lens and the image positions were 180 mm and 400 mm, respectively. From these measured brightness for three different lens excitation conditions, it is concluded that the brightness depends on the first lens excitation. For the electron gun operated in a space charge limited condition, some of the electrons emitted from the cathode are returned to the cathode without having crossed a virtual cathode. Therefore, method that assumes a Langmuir limit defining method using a Maxwellian distribution of electron velocities may need to be revised. For the condition in which the values of the exceeding the Langmuir limit are measured, the simulated trajectories of electrons that are emitted from the cathode do not cross the optical axis at the crossover, thus the law of sines may not be valid for high brightness electron beam systems.

Nakasuji, Mamoru [2-15-11, Serigaya-chou, Kounan-ku, Yokohama-shi, Kanagawa-ken (Japan)] [2-15-11, Serigaya-chou, Kounan-ku, Yokohama-shi, Kanagawa-ken (Japan)

2013-08-15T23:59:59.000Z

316

Thermomechanical aspects of the liquid metal cooled limiter  

SciTech Connect (OSTI)

Analysis has been performed to evaluate the possibility of using liquid lithium as a coolant for the limiter. A global analysis was carried out to determine limiter's shape and configuration, and then detailed MHD, heat transfer, and structural analysis, were performed to determine limiting coolant velocities, operating pressures, Nusselt number, and allowable heat fluxes. For one of the most suitable choices of materials i.e. vanadium structure, lithium coolant, and Be coating (10 mm), the limiting heat flux has been found to be 2.5 MW/m/sup 2/. For High, Z coating of tungsten the limiting heat flux has been found to be 5.7 MW/m/sup 2/. In both cases the operating pressure was maintained at 10 MPa.

Majid, A.; Abdou, M.A.

1989-03-01T23:59:59.000Z

317

Solvation Free Energies of Alanine Peptides: The Effect of Flexibility  

SciTech Connect (OSTI)

The electrostatic (?Gel), cavity-formation (?Gvdw), and total (?G) solvation free energies for 10 alanine peptides ranging in length (n) from 1 to 10 monomers were calculated. The free energies were computed both with xed, extended conformations of the peptides and again for some of the peptides without constraints. The solvation free energies, ?Gel, ?Gvdw, and ?G, were found to be linear in n, with the slopes of the best-fit lines being gamma_el, gamma_vdw, and gamma, respectively. Both gamma_el and gamma were negative for fixed and flexible peptides, and gamma_vdw was negative for fixed peptides. That gamma_vdw was negative was surprising, as experimental data on alkanes, theoretical models, and MD computations on small molecules and model systems generally suggest that gamma_vdw should be positive. A negative gamma_vdw seemingly contradicts the notion that ?Gvdw drives the initial collapse of the protein when it folds by favoring conformations with small surface areas, but when we computed ?Gvdw for the flexible peptides, thereby allowing the peptides to assume natural ensembles of more compact conformations, gamma-vdw was positive. Because most proteins do not assume extended conformations, a ?Gvdw that increases with increasing surface area may be typical for globular proteins. An alternative hypothesis is that the collapse is driven by intramolecular interactions. We show that the intramolecular van der Waal's interaction energy is more favorable for the flexible than for the extended peptides, seemingly favoring this hypothesis, but the large fluctuations in this energy may make attributing the collapse of the peptide to this intramolecular energy difficult.

Kokubo, Hironori; Harris, Robert C.; Asthagiri, Dilip; Pettitt, Bernard M.

2013-12-03T23:59:59.000Z

318

Flexible cognitive resources: competitive content maps for attention  

E-Print Network [OSTI]

so that, as tasks become harder, performance degrades. Where do the limits on these resources come' for processing and, because these limited `resources' are spread more thinly with increased task `load', speed is it limited? Can we get more of it? There are a number of possible resources and we focus here

Alvarez, George A.

319

Two methods extend the operating range of ESP's  

SciTech Connect (OSTI)

This paper reports variable-speed devices (VSD's) and surface choking, two methods for extending the operating range of electrical submersible pumps (ESP's). With this additional operational flexibility, the ESP can be used in wells with rapidly changing productivity and in wells where the productivity has not been thoroughly tested. Before designing and installing an ESP, it is desirable to have tested the well and have knowledge of the well's current (and expected) productivity index (PI) or inflow performance (IPR). This can be done by a portable well-test unit using an ESP or another type of artificial lift device, perhaps installed previously on the well.

Lea, J.F. (Amoco Production Co., Tulsa, OK (USA))

1989-11-27T23:59:59.000Z

320

Stability analysis of buried flexible pipes: a biaxial buckling equation  

E-Print Network [OSTI]

loading are (see Appendix B for derivations) 29 rN. . +Ne~e+rp, = 0 rNes, e + Ne, a+ rpa = 0 r M*, *, +?M*a, *e + Me, ee +?e ? (?*P*, * +?N*eP*, e + - NaPe, e) 2 +r p. Ps+r pePa+r p. = o 2 2 2 (27) Introduction of Eqs. (20) and (25) into Eqs. (27...STABILITY ANALYSIS OF BURIED FLEXIBLE PIPES: A BIAXIAL BUCKLING EQUATION A Thesis by MELISSA TUYET-MAI CHAU Submitted to the Office of Graduate Studies of Texas AkM University in partial fulfillment of the requirements for the degree...

Chau, Melissa Tuyet-Mai

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Printable, flexible and stretchable diamond for thermal management  

DOE Patents [OSTI]

Various heat-sinked components and methods of making heat-sinked components are disclosed where diamond in thermal contact with one or more heat-generating components are capable of dissipating heat, thereby providing thermally-regulated components. Thermally conductive diamond is provided in patterns capable of providing efficient and maximum heat transfer away from components that may be susceptible to damage by elevated temperatures. The devices and methods are used to cool flexible electronics, integrated circuits and other complex electronics that tend to generate significant heat. Also provided are methods of making printable diamond patterns that can be used in a range of devices and device components.

Rogers, John A; Kim, Tae Ho; Choi, Won Mook; Kim, Dae Hyeong; Meitl, Matthew; Menard, Etienne; Carlisle, John

2013-06-25T23:59:59.000Z

322

Flexible metallic seal for transition duct in turbine system  

DOE Patents [OSTI]

A turbine system is disclosed. In one embodiment, the turbine system includes a transition duct. The transition duct includes an inlet, an outlet, and a passage extending between the inlet and the outlet and defining a longitudinal axis, a radial axis, and a tangential axis. The outlet of the transition duct is offset from the inlet along the longitudinal axis and the tangential axis. The transition duct further includes an interface member for interfacing with a turbine section. The turbine system further includes a flexible metallic seal contacting the interface member to provide a seal between the interface member and the turbine section.

Flanagan, James Scott; LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Dillard, Daniel Jackson; Pentecost, Ronnie Ray

2014-04-22T23:59:59.000Z

323

Layer equivalency factors and deformation characteristics of flexible pavements  

E-Print Network [OSTI]

Depth 0(in. ) 2 Base Course 12 Subbase Course tubing Pressuremeter Unloading Modulus EU (Section 7) 522172 psi (3600000 kPa) 24 70348 psi ( 485000 kPa) 36 Subgrade probe Test in progress 11604 psi ( 80000 kPa) 48? 11169 psi... gC' Test No. 40 Ql U1 20 2 3 4 6 20 40 60 80 120 140 160 Normal Stress in psi FIG. 7. I'1ohr's Diagram of Texas Triaxial Test (prom Nef 13) 21 50 Chart for Classification of Subgrade and Flexible Base Naterial 40 Class 1 30 Class 2...

Hung, Jung-Tsann

1981-01-01T23:59:59.000Z

324

Flexible Pillared Graphene-Paper Electrodes for High-Performance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicyFeasibilityFieldMinds" | National Hansen 1 ,Flexible

325

Project Profile: Flexible Assembly Solar Technology | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d FNEPA/309DepartmentDepartment of EnergyFlexible Assembly Solar

326

Flexible Fuel vehicle cost calculator | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6Theoretical vs Actual DataNext 25 YearsFlat RidgeFlexible

327

Flexible edge seal for vacuum insulating glazing units  

DOE Patents [OSTI]

A flexible edge seal is provided for a vacuum insulating glazing unit having a first glass pane and a second glass pane spaced-apart from the first. The edge seal comprises a seal member formed of a hermetically bondable material and having a first end, a second end and a center section disposed therebetween. The first end is hermetically bondable to a first glass pane. The second end is hermetically bondable to a second glass pane. The center section comprises a plurality of convolutes.

Bettger, Kenneth J.; Stark, David H.

2012-12-11T23:59:59.000Z

328

COMMENTARY:Limits to adaptation  

SciTech Connect (OSTI)

An actor-centered, risk-based approach to defining limits to social adaptation provides a useful analytic framing for identifying and anticipating these limits and informing debates over society s responses to climate change.

Preston, Benjamin L [ORNL

2013-01-01T23:59:59.000Z

329

NUCLEAR PLANT OPERATIONS AND  

E-Print Network [OSTI]

NUCLEAR PLANT OPERATIONS AND CONTROL KEYWORDS: neutron flux, cur- rent noise, vibration diagnostics: Swedish Nuclear Powe

Pzsit, Imre

330

Operator pencil passing through a given operator  

SciTech Connect (OSTI)

Let ? be a linear differential operator acting on the space of densities of a given weight ?{sub 0} on a manifold M. One can consider a pencil of operators ?-circumflex(?)=(?{sub ?}) passing through the operator ? such that any ?{sub ?} is a linear differential operator acting on densities of weight ?. This pencil can be identified with a linear differential operator ?-circumflex acting on the algebra of densities of all weights. The existence of an invariant scalar product in the algebra of densities implies a natural decomposition of operators, i.e., pencils of self-adjoint and anti-self-adjoint operators. We study lifting maps that are on one hand equivariant with respect to divergenceless vector fields, and, on the other hand, with values in self-adjoint or anti-self-adjoint operators. In particular, we analyze the relation between these two concepts, and apply it to the study of diff?(M)-equivariant liftings. Finally, we briefly consider the case of liftings equivariant with respect to the algebra of projective transformations and describe all regular self-adjoint and anti-self-adjoint liftings. Our constructions can be considered as a generalisation of equivariant quantisation.

Biggs, A., E-mail: khudian@manchester.ac.uk, E-mail: adam.biggs@student.manchester.ac.uk; Khudaverdian, H. M., E-mail: khudian@manchester.ac.uk, E-mail: adam.biggs@student.manchester.ac.uk [School of Mathematics, University of Manchester, Oxford Road, Manchester M13 9PL (United Kingdom)

2013-12-15T23:59:59.000Z

331

Model 6000 Laser Controller Operation and Maintenance Manual  

E-Print Network [OSTI]

i Model 6000 Laser Controller Operation and Maintenance Manual #12;Corporate Headquarters Canada by improper use or failure to observe proper operating procedures per the product specification or operators 9002 by the British Standards Institution. #12;Limited Warranty Newport warrants that this product

332

Flexibility in the Design of the NSLS-II Lattice  

SciTech Connect (OSTI)

The NSLS-II light source is a proposed 3 GeV storage ring, with the potential for ultra-low emittance [1]. The lattice design uses a 30 cell DBA structure with a periodicity of 15, with alternating long and short straight sections. All cells are tuned achromatic to maximize the emittance reduction achieved as damping wigglers are added to the ring. Recent optimization of the lattice consisted of increasing the number of possible hard X-ray beam ports using three pole wigglers, reducing the number of magnets (quadrupoles and sextupoles) and shifting the magnets to allow easier extraction of the photon beams. The impact of the reduction of magnets on the lattice flexibility will be presented in terms of the tuning range possible for the lattice parameters: tune, emittance, chromaticity, and beta function matching to user insertion devices (IDs). This flexibility is important for optimizing the lattice linear and nonlinear properties, the dynamic aperture, and its impact on beam lifetime, as well as matching the user source requirements and for value engineering of magnets and power supplies.

Kramer,S.L.; Guo, W.

2009-05-04T23:59:59.000Z

333

Living in the Intelligent Workplace Structuring and Managing Building Operation Information  

E-Print Network [OSTI]

to record and evaluate operational performance of building components and user comfort (figure 1). So far the IW has experimented with integration of smart building technologies with advanced design and engineering strategies, enabling.... Technological advances over time also influence the composition and configuration of building systems. Buildings create technical challenges of providing individual comfort, organizational flexibility, technological adaptability, environmental sustainability...

Lam, K. P.; Srivastava, V.

2005-01-01T23:59:59.000Z

334

How energy conservation limits our measurements  

E-Print Network [OSTI]

Observations in Quantum Mechanics are subject to complex restrictions arising from the principle of energy conservation. Determining such restrictions, however, has been so far an elusive task, and only partial results are known. In this paper we discuss how constraints on the energy spectrum of a measurement device translate into limitations on the measurements which we can effect on a target system with non-trivial energy operator. We provide efficient algorithms to characterize such limitations and we quantify them exactly when the target is a two-level quantum system. Our work thus identifies the boundaries between what is possible or impossible to measure, i.e., between what we can see or not, when energy conservation is at stake.

Miguel Navascues; Sandu Popescu

2014-04-25T23:59:59.000Z

335

Apparatus And Method Of Using Flexible Printed Circuit Board In Optical Transceiver Device  

DOE Patents [OSTI]

This invention relates to a flexible printed circuit board that is used in connection with an optical transmitter, receiver or transceiver module. In one embodiment, the flexible printed circuit board has flexible metal layers in between flexible insulating layers, and the circuit board comprises: (1) a main body region orientated in a first direction having at least one electrical or optoelectronic device; (2) a plurality of electrical contact pads integrated into the main body region, where the electrical contact pads function to connect the flexible printed circuit board to an external environment; (3) a buckle region extending from one end of the main body region; and (4) a head region extending from one end of the buckle region, and where the head region is orientated so that it is at an angle relative to the direction of the main body region. The electrical contact pads may be ball grid arrays, solder balls or land-grid arrays, and they function to connect the circuit board to an external environment. A driver or amplifier chip may be adapted to the head region of the flexible printed circuit board. In another embodiment, a heat spreader passes along a surface of the head region of the flexible printed circuit board, and a window is formed in the head region of the flexible printed circuit board. Optoelectronic devices are adapted to the head spreader in such a manner that they are accessible through the window in the flexible printed circuit board.

Anderson, Gene R. (Albuquerque, NM); Armendariz, Marcelino G. (Albuquerque, NM); Bryan, Robert P. (Albuquerque, NM); Carson, Richard F. (Albuquerque, NM); Duckett, III, Edwin B. (Albuquerque, NM); McCormick, Frederick B. (Albuquerque, NM); Peterson, David W. (Sandia Park, NM); Peterson, Gary D. (Albuquerque, NM); Reysen, Bill H. (Lafayette, CO)

2005-03-15T23:59:59.000Z

336

E-Print Network 3.0 - approach semi-rigid flexible Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

repetitions... . Indian Roads Congress (IRC) 2001, Guidelines for the design of flexible pavements, IRC:37- 2001, 2nd Source: Das, Animesh - Department of Civil Engineering,...

337

Understanding the Hydrodynamics of Swimming: From Fish Fins to Flexible Propulsors for Autonomous  

E-Print Network [OSTI]

Understanding the Hydrodynamics of Swimming: From Fish Fins to Flexible Propulsors for Autonomous. The research effort described here is concerned with developing a maneuvering propulsor for an autonomous

Lauder, George V.

338

Flexible CHP System with Low NOx, CO and VOC Emissions - Fact...  

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

Sheet, 2014 Flexible CHP System with Low NOx, CO and VOC Emissions - Fact Sheet, 2014 The Gas Technology Institute, in collaboration with Cannon Boiler Works, Integrated CHP...

339

Fuel-Flexible Combustion System for Refinery and Chemical Plant...  

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

low-emission operation across a broad range of fuel compositions, including syngas, biogas, natural gas, and refinery fuel gas. Displacing Natural Gas Consumption and Lowering...

340

Effects of Combustion-Induced Vortex Breakdown on Flashback Limits of Syngas-Fueled Gas Turbine Combustors  

SciTech Connect (OSTI)

Turbine combustors of advanced power systems have goals to achieve very low pollutants emissions, fuel variability, and fuel flexibility. Future generation gas turbine combustors should tolerate fuel compositions ranging from natural gas to a broad range of syngas without sacrificing operational advantages and low emission characteristics. Additionally, current designs of advanced turbine combustors use various degrees of swirl and lean premixing for stabilizing flames and controlling high temperature NOx formation zones. However, issues of fuel variability and NOx control through premixing also bring a number of concerns, especially combustor flashback and flame blowout. Flashback is a combustion condition at which the flame propagates upstream against the gas stream into the burner tube. Flashback is a critical issue for premixed combustor designs, because it not only causes serious hardware damages but also increases pollutant emissions. In swirl stabilized lean premixed turbine combustors onset of flashback may occur due to (i) boundary layer flame propagation (critical velocity gradient), (ii) turbulent flame propagation in core flow, (iii) combustion instabilities, and (iv) upstream flame propagation induced by combustion induced vortex breakdown (CIVB). Flashback due to first two foregoing mechanisms is a topic of classical interest and has been studied extensively. Generally, analytical theories and experimental determinations of laminar and turbulent burning velocities model these mechanisms with sufficient precision for design usages. However, the swirling flow complicates the flashback processes in premixed combustions and the first two mechanisms inadequately describe the flashback propensity of most practical combustor designs. The presence of hydrogen in syngas significantly increases the potential for flashback. Due to high laminar burning velocity and low lean flammability limit, hydrogen tends to shift the combustor operating conditions towards flashback regime. Even a small amount of hydrogen in a fuel blend triggers the onset of flashback by altering the kinetics and thermophysical characteristics of the mixture. Additionally, the presence of hydrogen in the fuel mixture modifies the response of the flame to the global effects of stretch and preferential diffusion. Despite its immense importance in fuel flexible combustor design, little is known about the magnitude of fuel effects on CIVB induced flashback mechanism. Hence, this project investigates the effects of syngas compositions on flashback resulting from combustion induced vortex breakdown. The project uses controlled experiments and parametric modeling to understand the velocity field and flame interaction leading to CIVB driven flashback.

Ahsan Choudhuri

2011-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

CONDUCT OF OPERATIONS (CO)  

Broader source: Energy.gov (indexed) [DOE]

CONDUCT OF OPERATIONS (CO) OBJECTIVE TA-55 SST Facility NNSA ORR Implementation Plan 1 1 CO.1 The formality and discipline of operations is adequate to conduct work safely and...

342

Reservoir Operation in Texas  

E-Print Network [OSTI]

management of the surface water resources of the various river basins of the state. The operation of these essential water control facilities is examined in this report. Reservoir operation is viewed here from the perspective of deciding how much water...

Wurbs, Ralph A.

343

Aerosol Sampler Operations Manual  

E-Print Network [OSTI]

-1123 Laboratory FAX (916) 752-4107 Standard Operating Procedures Technical Information Document TI 201A #12;TI 201.................................................................................................................................................. 3 1.0 Weekly Maintenance ProceduresIMPROVE Aerosol Sampler Operations Manual February 10, 1997 Air Quality Group Crocker Nuclear

Fischer, Emily V.

344

SWPF Crane Lift Operation  

SciTech Connect (OSTI)

A multiple vview shot of the SWPF crane lift operation at the Savannah River Site. Funded by the Recovery Act.

None

2010-01-01T23:59:59.000Z

345

Quantum Operations and Measurement  

E-Print Network [OSTI]

the Stinespring dilation form of E . 6 #12; II: operator­sum representation E(#) = Tr env # U(## # env )U

Seevinck, Michiel

346

Presentations from 2nd Cryogenic Operations Workshop (CRYO 2006) , May 9-11, 2006, Menlo Park, California  

SciTech Connect (OSTI)

This workshop covered the latest practical engineering and operational management applications and techniques that have been found to enhance operational costs, reliability, and flexibility, with topics such as establishing the optimal refrigeration design cycle and operating design points; utility management; manpower scheduling; plant control philosophy and automation; short and long term maintenance scheduling; refrigerant loss detection and control; system contamination; component reliability; and equipment technical performance issues.

Weisend, J.

2006-11-10T23:59:59.000Z

347

Tropical Limit in Statistical Physics  

E-Print Network [OSTI]

Tropical limit for macroscopic systems in equilibrium defined as the formal limit of Boltzmann constant k going to 0 is discussed. It is shown that such tropical limit is well-adapted to analyse properties of systems with highly degenerated energy levels, particularly of frustrated systems like spin ice and spin glasses. Tropical free energy is a piecewise linear function of temperature, tropical entropy is a piecewise constant function and the system has energy for which tropical Gibbs' probability has maximum. Properties of systems in the points of jump of entropy are studied. Systems with finite and infinitely many energy levels and phenomena of limiting temperatures are discussed.

M. Angelelli; B. Konopelchenko

2015-02-04T23:59:59.000Z

348

Detailed design report for an operational phase panel-closure system  

SciTech Connect (OSTI)

Under contract to Westinghouse Electric Corporation (Westinghouse), Waste Isolation Division (WID), IT Corporation has prepared a detailed design of a panel-closure system for the Waste Isolation Pilot Plant (WIPP). Preparation of this detailed design of an operational-phase closure system is required to support a Resource Conservation and Recovery Act (RCRA) Part B permit application and a non-migration variance petition. This report describes the detailed design for a panel-closure system specific to the WIPP site. The recommended panel-closure system will adequately isolate the waste-emplacement panels for at least 35 years. This report provides detailed design and material engineering specifications for the construction, emplacement, and interface-grouting associated with a panel-closure system at the WIPP repository, which would ensure that an effective panel-closure system is in place for at least 35 years. The panel-closure system provides assurance that the limit for the migration of volatile organic compounds (VOC) will be met at the point of compliance, the WIPP site boundary. This assurance is obtained through the inherent flexibility of the panel-closure system.

NONE

1996-01-11T23:59:59.000Z

349

Growth and characterizations of GaN micro-rods on graphene films for flexible light emitting diodes  

SciTech Connect (OSTI)

We report the growth of GaN micro-rods and coaxial quantum-well heterostructures on graphene films, together with structural and optical characterization, for applications in flexible optical devices. Graphene films were grown on Cu foil by means of chemical vapor deposition, and used as the substrates for the growth of the GaN micro-rods, which were subsequently transferred onto SiO{sub 2}/Si substrates. Highly Si-doped, n-type GaN micro-rods were grown on the graphene films using metalorganic chemical vapor deposition. The growth and vertical alignment of the GaN micro-rods, which is a critical factor for the fabrication of high-performance light-emitting diodes (LEDs), were characterized using electron microscopy and X-ray diffraction. The GaN micro-rods exhibited promising photoluminescence characteristics for optoelectronic device applications, including room-temperature stimulated emission. To fabricate flexible LEDs, In{sub x}Ga{sub 1x}N/GaN multiple quantum wells and a p-type GaN layer were deposited coaxially on the GaN micro-rods, and transferred onto Ag-coated polymer substrates using lift-off. Ti/Au and Ni/Au metal layers were formed to provide electrical contacts to the n-type and p-type GaN regions, respectively. The micro-rod LEDs exhibited intense emission of visible light, even after transfer onto the flexible polymer substrate, and reliable operation was achieved following numerous cycles of mechanical deformation.

Chung, Kunook; Beak, Hyeonjun; Tchoe, Youngbin; Oh, Hongseok; Yi, Gyu-Chul, E-mail: gcyi@snu.ac.kr [Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 151-747 (Korea, Republic of); Yoo, Hyobin; Kim, Miyoung [Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)

2014-09-01T23:59:59.000Z

350

Operations and maintenance philosophy  

SciTech Connect (OSTI)

This Operations and Maintenance (O&M) Philosophy document is intended to establish a future O&M vision, with an increased focus on minimizing worker exposure, ensuring uninterrupted retrieval operations, and minimizing operation life-cycle cost. It is intended that this document would incorporate O&M lessons learned into on-going and future project upgrades.

DUNCAN, G.P.

1999-10-28T23:59:59.000Z

351

MANUFACTURING & SERVICE OPERATIONS MANAGEMENT  

E-Print Network [OSTI]

MANUFACTURING & SERVICE OPERATIONS MANAGEMENT Vol. 14, No. 4, Fall 2012, pp. 495­511 ISSN 1523 research directions, expanding upon the key points raised by Green [Green LV (2012) The vital role of operations analysis in improving healthcare delivery. Manufacturing Service Oper. Management 14

Boucherie, Richard J.

352

ARAC: A flexible real-time dose consequence assessment system  

SciTech Connect (OSTI)

Since its beginning, the Atmospheric Release Advisory Capability (ARAC), an emergency radiological dose assessment service of the US Government, has been called on to do consequence assessments for releases into the atmosphere of radionuclides and a variety of other substances. Some of the more noteworthy emergency responses have been for the Three Mile Island and Chernobyl nuclear power reactor accidents, and more recently, for a cloud of gases from a rail-car spill into the Sacramento river of the herbicide metam sodium, smoke from hundreds of burning oil wells in Kuwait, and ash clouds from the eruption of Mt. Pinatubo. The spatial scales of these responses range from local, to regional, to global, and the response periods from hours, to weeks, to months. Because of the variety of requirements of each unique assessment, ARAC has developed and maintains a flexible system of people, computer software and hardware.

Ellis, J.S.; Sullivan, T.J.

1993-10-07T23:59:59.000Z

353

Direct printing and reduction of graphite oxide for flexible supercapacitors  

SciTech Connect (OSTI)

We report direct printing and photo-thermal reduction of graphite oxide (GO) to obtain a highly porous pattern of interdigitated electrodes, leading to a supercapacitor on a flexible substrate. Key parameters optimized include the amount of GO delivered, the suitable photo-thermal energy level for effective flash reduction, and the substrate properties for appropriate adhesion after reduction. Tests with supercapacitors based on the printed-reduced GO showed performance comparable with commercial supercapacitors: the energy densities were 1.06 and 0.87 mWh/cm{sup 3} in ionic and organic electrolytes, respectively. The versatility in the architecture and choice of substrate makes this material promising for smart power applications.

Jung, Hanyung [Department of Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul (Korea, Republic of); Ve Cheah, Chang [Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul (Korea, Republic of); Jeong, Namjo [Energy Materials and Convergence Research Department, Korea Institute of Energy Research, Daejeon (Korea, Republic of); Lee, Junghoon, E-mail: jleenano@snu.ac.kr [Department of Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Seoul (Korea, Republic of); Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul (Korea, Republic of); Division of WCU Multiscale Mechanical Design, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul (Korea, Republic of)

2014-08-04T23:59:59.000Z

354

A flexible scintillation light apparatus for rare event searches  

E-Print Network [OSTI]

Compelling experimental evidences of neutrino oscillations and their implication that neutrinos are massive particles have given neutrinoless double beta decay a central role in astroparticle physics. In fact, the discovery of this elusive decay would be a major breakthrough, unveiling that neutrino and antineutrino are the same particle and that the lepton number is not conserved. It would also impact our efforts to establish the absolute neutrino mass scale and, ultimately, understand elementary particle interaction unification. All current experimental programs to search for neutrinoless double beta decay are facing with the technical and financial challenge of increasing the experimental mass while maintaining incredibly low levels of spurious background. The new concept described in this paper could be the answer which combines all the features of an ideal experiment: energy resolution, low cost mass scalability, isotope choice flexibility and many powerful handles to make the background negligible. The ...

Bonvicini, Valter; Cremonesi, Oliviero; Cucciati, Giacomo; Gironi, Luca; Pavan, Maura; Previtali, Ezio; Sisti, Monica

2014-01-01T23:59:59.000Z

355

Flexible nuclear medicine camera and method of using  

DOE Patents [OSTI]

A nuclear medicine camera 10 and method of use photographically record radioactive decay particles emitted from a source, for example a small, previously undetectable breast cancer, inside a patient. The camera 10 includes a flexible frame 20 containing a window 22, a photographic film 24, and a scintillation screen 26, with or without a gamma-ray collimator 34. The frame 20 flexes for following the contour of the examination site on the patient, with the window 22 being disposed in substantially abutting contact with the skin of the patient for reducing the distance between the film 24 and the radiation source inside the patient. The frame 20 is removably affixed to the patient at the examination site for allowing the patient mobility to wear the frame 20 for a predetermined exposure time period. The exposure time may be several days for obtaining early qualitative detection of small malignant neoplasms.

Dilmanian, F. Avraham (Yaphank, NY); Packer, Samuel (Great Neck, NY); Slatkin, Daniel N. (Sound Beach, NY)

1996-12-10T23:59:59.000Z

356

Flexible nuclear medicine camera and method of using  

DOE Patents [OSTI]

A nuclear medicine camera and method of use photographically record radioactive decay particles emitted from a source, for example a small, previously undetectable breast cancer, inside a patient. The camera includes a flexible frame containing a window, a photographic film, and a scintillation screen, with or without a gamma-ray collimator. The frame flexes for following the contour of the examination site on the patient, with the window being disposed in substantially abutting contact with the skin of the patient for reducing the distance between the film and the radiation source inside the patient. The frame is removably affixed to the patient at the examination site for allowing the patient mobility to wear the frame for a predetermined exposure time period. The exposure time may be several days for obtaining early qualitative detection of small malignant neoplasms. 11 figs.

Dilmanian, F.A.; Packer, S.; Slatkin, D.N.

1996-12-10T23:59:59.000Z

357

DEVELOPMENT OF A FLEXIBLE, MULTIZONE, MULTIFAMILY BUILDING SIMULATION MODEL  

SciTech Connect (OSTI)

Weatherization of multifamily buildings is gaining increased attention in the U.S. Available energy audit tools for multifamily buildings were found to need desirable improvements. On the wish list of field experts for enhanced features was the basic ability to model multizone buildings (i.e., one thermal zone per dwelling unit) with simplified user inputs, which allows a better analysis of decentralized and centralized HVAC and domestic hot water systems of multifamily buildings without having to create detailed building models. To address the desired capabilities, development of an enhanced energy audit tool was begun in 2011. The tool is a strategically structured, flexible, one-zone-per-unit, DOE-2.1e model coupled with a simplified user interface to model small to large multifamily buildings with decentralized or centralized systems and associated energy measures. This paper describes the modeling concept and its implementation.

Malhotra, Mini [ORNL] [ORNL; Im, Piljae [ORNL] [ORNL

2012-01-01T23:59:59.000Z

358

Locally-smeared operator product expansions  

SciTech Connect (OSTI)

We propose a "locally-smeared Operator Product Expansion" (sOPE) to decompose non-local operators in terms of a basis of locally-smeared operators. The sOPE formally connects nonperturbative matrix elements of smeared degrees of freedom, determined numerically using the gradient flow, to non-local operators in the continuum. The nonperturbative matrix elements do not suffer from power-divergent mixing on the lattice, provided the smearing scale is kept fixed in the continuum limit. The presence of this smearing scale prevents a simple connection to the standard operator product expansion and therefore requires the construction of a two-scale formalism. We demonstrate the feasibility of our approach using the example of real scalar field theory.

Monahan, Christopher; Orginos, Kostantinos

2014-12-01T23:59:59.000Z

359

FUEL CASK IMPACT LIMITER VULNERABILITIES  

SciTech Connect (OSTI)

Cylindrical fuel casks often have impact limiters surrounding just the ends of the cask shaft in a typical 'dumbbell' arrangement. The primary purpose of these impact limiters is to absorb energy to reduce loads on the cask structure during impacts associated with a severe accident. Impact limiters are also credited in many packages with protecting closure seals and maintaining lower peak temperatures during fire events. For this credit to be taken in safety analyses, the impact limiter attachment system must be shown to retain the impact limiter following Normal Conditions of Transport (NCT) and Hypothetical Accident Conditions (HAC) impacts. Large casks are often certified by analysis only because of the costs associated with testing. Therefore, some cask impact limiter attachment systems have not been tested in real impacts. A recent structural analysis of the T-3 Spent Fuel Containment Cask found problems with the design of the impact limiter attachment system. Assumptions in the original Safety Analysis for Packaging (SARP) concerning the loading in the attachment bolts were found to be inaccurate in certain drop orientations. This paper documents the lessons learned and their applicability to impact limiter attachment system designs.

Leduc, D; Jeffery England, J; Roy Rothermel, R

2009-02-09T23:59:59.000Z

360

Limitations on entropic Bell inequalities  

E-Print Network [OSTI]

The derivation of Bell inequalities in terms of quantum statistical (thermodynamic) entropies is considered. Inequalities of the Wigner form are derived but shown to be extremely limiting in their applicability due to the nature of the density matrices involved. This also helps to identify a limitation in the Cerf-Adami inequalities.

Ian T. Durham

2006-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Congressional Request Limiting the Magnitude  

E-Print Network [OSTI]

as goals? Target: limit U.S. GHG emissions (e.g., national emission budget, or percent reduction) What is a reasonable share of U.S. emission reductions relative to the global targets? What is the implied emissions on atmospheric GHG concentrations? Target: limit atmospheric GHG concentrations (e.g., 450, 550 ppm CO2,eq) How

362

Performance limits of fusion first-wall structural materials.  

SciTech Connect (OSTI)

Key features of fusion energy relate primarily to potential advantages associated with safety and environmental considerations and the near endless supply of fuel. However, it is generally concluded that high performance fusion power systems will be required in order to be economically competitive with other energy options. As in most energy systems, structural materials operating limits pose a primary constraint to the performance of fusion power systems. It is also recognized that for the case of fusion power, the first-wall/blanket system will have a dominant impact on both the economic and safety/environmental attractiveness of fusion energy. The first-wall blanket structure is particularly critical since it must maintain high integrity at relatively high temperatures during exposure to high radiation levels, high surface heat fluxes, and significant primary stresses. The performance limits of the first-wall/blanket structure will be dependent on the structural material properties, the coolant/breeder system, and the specific design configuration. Key factors associated with high performance structural materials include (1) high temperature operation, (2) a large operating temperature window, and (3) a long operating lifetime. High temperature operation is necessary to provide for high power conversion efficiency. As discussed later, low-pressure coolant systems provide significant advantages. A large operating temperature window is necessary to accommodate high surface heating and high power density. The operating temperature range for the structure must include the temperature gradient through the first wall and the coolant system AT required for efficient energy conversion. This later requirement is dependent on the coolant/breeder operating temperature limits. A long operating lifetime of the structure is important to improve system availability and to minimize waste disposition.

Smith, D. L.; Majumdar, S.; Billone, M.; Mattas, R. F.

1999-11-12T23:59:59.000Z

363

A Probabilistic-Based Design Model for Achieving Flexibility in Design  

E-Print Network [OSTI]

A Probabilistic-Based Design Model for Achieving Flexibility in Design Wei Chen* Assistant manuscript for publication in the ASME Journal of Mechanical Design, September 28, 1998 #12;2 ABSTRACT In this paper we propose the use of a probabilistic-based design model as a basis for providing the flexibility

Chen, Wei

364

The Hybrid Power Flow Controller A New Concept for Flexible AC Transmission  

E-Print Network [OSTI]

The Hybrid Power Flow Controller A New Concept for Flexible AC Transmission Jovan Z. Bebic Electric flow controller topologies are proposed for flexible AC transmission systems (FACTS). The first one or series capacitors can be enhanced to generalized power flow control ­ a functionality commonly associated

Lehn, Peter W.

365

Sept. 17, 1989 CONTROL OF A FLEXIBLE ROBOT ARM 1;2  

E-Print Network [OSTI]

Sept. 17, 1989 CONTROL OF A FLEXIBLE ROBOT ARM 1;2 Thomas I. Seidman Department of Mathematics.umbc.edu Abstract We model a flexible robot arm supported at a prismatic joint so the length of (the is considering a free boundary problem. 1. Introduction The original stimulation to consideration of a robot arm

Seidman, Thomas I.

366

Flexible and transparent supercapacitor based on In2O3 nanowire/carbon nanotube heterogeneous films  

E-Print Network [OSTI]

Flexible and transparent supercapacitor based on In2O3 nanowire/carbon nanotube heterogeneous films; accepted 17 December 2008; published online 28 January 2009 In this paper, a supercapacitor galvanostatic measurements. In addition, to study the stability of flexible and transparent supercapacitor

Zhou, Chongwu

367

Know Your Health Care Flexible Spending Account Eligible and Ineligible Expenses  

E-Print Network [OSTI]

/SERVICES Acupuncture Alcohol and Drug/Substance Abuse (inpatient treatment and outpatient care) Ambulance FertilityKnow Your Health Care Flexible Spending Account Eligible and Ineligible Expenses MAXIMIZE THE VALUE OF YOUR REIMBURSEMENT ACCOUNT Your Health Care Flexible Spending Account (FSA), pre-tax funds can be used

New Mexico, University of

368

Mechanics of thin-film transistors and solar cells on flexible substrates Helena Gleskova*  

E-Print Network [OSTI]

1 Mechanics of thin-film transistors and solar cells on flexible substrates Helena Gleskova* , I be minimized throughout the fabrication process. Amorphous silicon thin-film transistors and solar cells, thin-film transistor, solar cell, flexible electronics Phone: (609) 258-4626, Fax: (609) 258-3585, E

369

Resonant cavity enhanced light harvesting in flexible thin-film organic solar cells  

E-Print Network [OSTI]

Resonant cavity enhanced light harvesting in flexible thin-film organic solar cells Nicholas P of solar energy conversion be- cause they use thin films of photoactive material and can be manufactured and photocurrent in flexible organic solar cells. We demonstrate that this enhancement is attributed to a broadband

Fan, Shanhui

370

Effect of Flexural and Torsional Wing Flexibility on Lift Generation in Hoverfly Flight  

E-Print Network [OSTI]

SYMPOSIUM Effect of Flexural and Torsional Wing Flexibility on Lift Generation in Hoverfly Flight of the artificial wing is comparable to that of the natural wing. To emulate the torsional flexibility at the wing of attack. Maximum lift was achieved when the stiffness of the hinge was similar to that of a hoverfly

Wood, Robert

371

Testing a Flexible Method to Reduce False Monsoon Mathew Alexander Stiller-Reeve1,2  

E-Print Network [OSTI]

Testing a Flexible Method to Reduce False Monsoon Onsets Mathew Alexander Stiller-Reeve1-based adaptations. Citation: Stiller-Reeve MA, Spengler T, Chu P-S (2014) Testing a Flexible Method to Reduce False Copyright: ? 2014 Stiller-Reeve et al. This is an open-access article distributed under the terms

Hawai'i at Manoa, University of

372

MATERIALS AND MANUFACTURING PROCESSES FOR HIGH-EFFICIENCY FLEXIBLE PHOTOVOLTAIC MODULES  

E-Print Network [OSTI]

.Blakers. Centre for Sustainable Energy Systems, Australian National University, Canberra, ACT 0200, Australia solar modules is presented. Flexible modules are lightweight, roll-able, and/or foldable for storage-efficiency crystalline silicon solar cells embedded between flexible coversheets, and supported by silicone encapsulant

373

JASPER: A PORTABLE FLEXIBLE OPEN-SOURCE SOFTWARE TOOL KIT FOR IMAGE CODING/PROCESSING  

E-Print Network [OSTI]

JASPER: A PORTABLE FLEXIBLE OPEN-SOURCE SOFTWARE TOOL KIT FOR IMAGE CODING/PROCESSING Michael D Columbia Vancouver, BC, V6T 1Z4, Canada E-mail: rababw@ece.ubc.ca ABSTRACT JasPer, a portable flexible open (such as JPEG 2000). JasPer is proving to be an extremely useful tool in a wide variety of applications

Adams, Michael D.

374

Perceptual decision processes flexibly adapt to avoid change-of-mind motor costs  

E-Print Network [OSTI]

Perceptual decision processes flexibly adapt to avoid change- of-mind motor costs Jeff Moher dynamically adjust perceptual decision-making processes to avoid high motor costs incurred by a change of mind flexibly adapt to avoid change-of-mind motor costs. Journal of Vision, 14(8):1, 1­13, http

Song, Joo-Hyun

375

Introducing Flexible Quantity Contracts into Distributed SoC and Embedded System Design Processes  

E-Print Network [OSTI]

Introducing Flexible Quantity Contracts into Distributed SoC and Embedded System Design Processes and flexible contracts regulate cooperation and cost distribution. The process ef- fectively delays the design a distributed design process. Today we already find dis- tributed design processes in automotive engineering

Paris-Sud XI, Université de

376

ACC03-ASME0018 Controller Design for Flexible Systems with Friction  

E-Print Network [OSTI]

ACC03-ASME0018 Controller Design for Flexible Systems with Friction: Linear Programming Approach of friction is presented. A linear program- ming technique for finding an optimal control of linear flexible systems is extended to frictional systems. A floating oscillator is used in the development, where

Singh, Tarunraj

377

Product flexibility measurement with enhanced change modes and effects analysis (CMEA)  

E-Print Network [OSTI]

Product flexibility measurement with enhanced change modes and effects analysis (CMEA) Darren A of Texas, Austin, TX 78712, USA Product designers seek to create products that are not only robust techniques exist for understanding and assessing the flexibility of products for future change. In this paper

Seepersad, Carolyn Conner

378

Flexible CO2 laser system for fundamental research related to an extreme ultraviolet lithography source  

E-Print Network [OSTI]

Flexible CO2 laser system for fundamental research related to an extreme ultraviolet lithography 2009; published online 10 December 2009 A CO2 laser system with flexible parameters was developed 1010 W/cm2 . Utilizing this CO2 MOPA laser system, high conversion efficiency from laser to in-band 2

Najmabadi, Farrokh

379

Solar: Towards a Flexible and Scalable Data-Fusion Infrastructure for Ubiquitous Computing  

E-Print Network [OSTI]

Solar: Towards a Flexible and Scalable Data-Fusion Infrastructure for Ubiquitous Computing Guanling applications flexible access to these sources, and yet scale to thousands of devices and sensors. In this pa- per we introduce our proposed infrastructure, Solar. In Solar, information sources produce events. Ap

Kotz, David

380

Flexibility and reliability in long-term planning exercises dedicated to the electricity sector  

E-Print Network [OSTI]

Flexibility and reliability in long-term planning exercises dedicated to the electricity sector of these options. This paper focuses on the electricity sector and on problems of flexibility and reliability are assessed through the level of electrical losses they induced and a related cost. These approaches

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "limited operational flexibility" 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

Work in Progress: Estimating the Economic Value of Flexibility in Access Network Unbundling  

E-Print Network [OSTI]

. Keywords: Local Loop Unbundling, Techno-Economic, Real Options, Telecom Regulator 1 Origin, ContextWork in Progress: Estimating the Economic Value of Flexibility in Access Network Unbundling Koen incorporate a flexibility bonus in its LLU-pricing strategy. In this paper we show how the economic technique

Paris-Sud XI, Université de

382

A scalable and flexible hybrid energy storage system design and implementation  

E-Print Network [OSTI]

A scalable and flexible hybrid energy storage system design and implementation Younghyun Kim and flexibility. Detailed description on implementation of hybrid energy storage system prototype. Power conversion efficiency and energy storage element characteristics considered. a r t i c l e i n f o Article

Pedram, Massoud

383

Flexible Point-Based Rendering on Mobile Devices Florent Duguet and George Drettakis  

E-Print Network [OSTI]

Flexible Point-Based Rendering on Mobile Devices Florent Duguet and George Drettakis REVES/INRIA Sophia-Antipolis, France, http://www-sop.inria.fr/reves Abstract Point-based rendering is a compact and efficient means of displaying complex geometry. Our goal is to enable flexible point-based rendering

Paris-Sud XI, Universit de

384

Subject: Health Insurance Portability and Accountability Act (HIPAA): Flexible Benefits HIPAA Privacy Policy  

E-Print Network [OSTI]

defined by HIPAA) of participants in the Flexible Spending Account for Health Care Expenses ("FSA of health care to a participant and that identifies the participant or for which there is a reasonable basisPOLICY Subject: Health Insurance Portability and Accountability Act (HIPAA): Flexible Benefits

385

Development of a Low Temperature PZT/Polymer Paste for Screen Printed Flexible Electronics  

E-Print Network [OSTI]

/m. Also, the material has a Young's modulus of 131 MPa and flexible to be exploited in smart effect) [1]. Such smart materials that can be used in sensors, energy harvesters and actuators can be well-exploited in smart-fabrics and flexible electronics applications. Using piezoelectric materials

386

Flexible barrier film, method of forming same, and organic electronic device including same  

DOE Patents [OSTI]

A flexible barrier film has a thickness of from greater than zero to less than 5,000 nanometers and a water vapor transmission rate of no more than 1.times.10.sup.-2 g/m.sup.2/day at 22.degree. C. and 47% relative humidity. The flexible barrier film is formed from a composition, which comprises a multi-functional acrylate. The composition further comprises the reaction product of an alkoxy-functional organometallic compound and an alkoxy-functional organosilicon compound. A method of forming the flexible barrier film includes the steps of disposing the composition on a substrate and curing the composition to form the flexible barrier film. The flexible barrier film may be utilized in organic electronic devices.

Blizzard, John; Tonge, James Steven; Weidner, William Kenneth

2013-03-26T23:59:59.000Z

387

Flexible cadmium telluride thin films grown on electron-beam-irradiated graphene/thin glass substrates  

SciTech Connect (OSTI)

We demonstrate the close-spaced sublimation growth of polycrystalline cadmium telluride (CdTe) thin films on a flexible graphene electrode/thin glass substrate structure. Prior to the growth of CdTe films, chemical-vapor-deposited graphene was transferred onto a flexible glass substrate and subjected to electron-beam irradiation at an energy of 0.2?MeV in order to intentionally introduce the defects into it in a controlled manner. Micro-Raman spectroscopy and sheet resistance measurements were employed to monitor the damage and disorder in the electron-beam irradiated graphene layers. The morphology and optical properties of the CdTe thin films deposited on a graphene/flexible glass substrate were systematically characterized. The integration of the defective graphene layers with a flexible glass substrate can be a useful platform to grow various thin-film structures for flexible electronic and optoelectronic devices.

Seo, Won-Oh; Kim, Jihyun, E-mail: hyunhyun7@korea.ac.kr [Department of Chemical and Biological Engineering, Korea University, Anam-dong, Sungbuk-gu, Seoul 136-713 (Korea, Republic of); Koo, Yong Hwan; Kim, Byungnam; Lee, Byung Cheol [Radiation Integrated System Research Division, Korea Atomic Energy Research Institute (KAERI), Daejeon 305-353 (Korea, Republic of); Kim, Donghwan [Department of Materials Science and Engineering, Korea University, Seoul 136-701 (Korea, Republic of)

2014-08-25T23:59:59.000Z

388

Measuring space systems flexibility : a comprehensive six-element framework  

E-Print Network [OSTI]

Space systems are extremely delicate and costly engineering artifacts that take a long time to design, manufacture, and launch into space and after they are launched, there is limited access to them. Millions of dollars ...

Nilchiani, Roshanak

2005-01-01T23:59:59.000Z

389

Multipolar corneal-shaping electrode with flexible removable skirt  

DOE Patents [OSTI]

The disclosure relates to a multipolar probe using radiofrequency energy to reshape the cornea of an eye. The surface of the cornea is flushed continuously with a conductive coolant during operation.

Doss, James D. (Los Alamos, NM)

1983-01-01T23:59:59.000Z

390

Fuel-Flexible Combustion System for Refinery and Chemical Plant Process Heaters  

SciTech Connect (OSTI)

This project culminated in the demonstration of a full-scale industrial burner which allows a broad range of opportunity gaseous fuels to be cost-effectively and efficiently utilized while generating minimal emissions of criteria air pollutants. The burner is capable of maintaining a stable flame when the fuel composition changes rapidly. This enhanced stability will contribute significantly to improving the safety and reliability of burner operation in manufacturing sites. Process heating in the refining and chemicals sectors is the primary application for this burner. The refining and chemical sectors account for more than 40% of total industrial natural gas use. Prior to the completion of this project, an enabling technology did not exist that would allow these energy-intensive industries to take full advantage of opportunity fuels and thereby reduce their natural gas consumption. Opportunity gaseous fuels include biogas (from animal and agricultural wastes, wastewater plants, and landfills) as well as syngas (from the gasification of biomass, municipal solid wastes, construction wastes, and refinery residuals). The primary challenge to using gaseous opportunity fuels is that their composition and combustion performance differ significantly from those of conventional fuels such as natural gas and refinery fuel gas. An effective fuel-flexible burner must accept fuels that range widely in quality and change in composition over time, often rapidly. In Phase 1 of this project, the team applied computational fluid dynamics analysis to optimize the prototype burners aerodynamic, combustion, heat transfer, and emissions performance. In Phase 2, full-scale testing and refinement of two prototype burners were conducted in test furnaces at Zeecos offices in Broken Arrow, OK. These tests demonstrated that the full range of conventional and opportunity fuels could be utilized by the projects burner while achieving robust flame stability and very low levels of air pollutant emissions. In Phase 3, the team retrofitted three fuel-flexible burners into a fired heater at a Shell plant and demonstrated the projects technology over a 6-month period. The project burners performed well during this period. They remain in commercial service at the Shell plant. Through this work, an improved understanding of flame stabilization mechanisms was gained. Also, methods for accommodating a wide range of fuel compositions were developed. This knowledge facilitated the commercialization of a new generation of burners that are suitable for the fuels of the future.

Benson, Charles; Wilson, Robert

2014-04-30T23:59:59.000Z

391

Cask fleet operations study  

SciTech Connect (OSTI)

The Nuclear Waste Policy Act of 1982 assigned to the Department of Energy's (DOE) Office of Civilian Waste Management the responsibility for disposing of high-level waste and spent fuel. A significant part of that responsibility involves transporting nuclear waste materials within the federal waste management system; that is, from the waste generator to the repository. The lead responsibility for transportation operations has been assigned to Oak Ridge Operations, with Oak Ridge National Laboratory (ORNL) providing technical support through the Transportation Operations Support Task Group. One of the ORNL support activities involves assessing what facilities, equipment and services are required to assure that an acceptable, cost-effective and safe transportation operations system can be designed, operated and maintained. This study reviews, surveys and assesses the experience of Nuclear Assurance Corporation (NAC) in operating a fleet of spent-fuel shipping casks to aid in developing the spent-fuel transportation system.

Not Available

1988-01-01T23:59:59.000Z

392

Quantum Limits and Robustness of Nonlinear Intracavity Absorption Spectroscopy  

E-Print Network [OSTI]

We investigate the limits of intracavity absorption spectroscopy with nonlinear media. Using a common theoretical framework, we compare the detection of a trace gas within an undriven cavity with gain near and above threshold, a driven cavity with gain kept just below threshold, and a cavity driven close to the saturation point of a saturable absorber. These phase-transition-based metrology methods are typically quantum-limited by spontaneous emission, and we compare them to the empty cavity shotnoise-limited case. Although the fundamental limits achievable with nonlinear media do not surpass the empty cavity limits, we show that nonlinear methods are more robust against certain technical noise models. This recognition may have applications in spectrometer design for devices operating in non-ideal field environments.

John K. Stockton; Ari K. Tuchman

2008-10-23T23:59:59.000Z

393

Pipeline Operations Program (Louisiana)  

Broader source: Energy.gov [DOE]

The Pipeline Operations Program regulates the construction, acquisition, abandonment and interconnection of natural gas pipelines, as well as, the transportation and use of natural gas supplies.

394

Hyponormality of Toeplitz Operators  

E-Print Network [OSTI]

Amer. Math. Soc. 82(1976), 494-496. [12] S. C. Power. Hankel Operators on Hilbert Space, Pitman, Boston, 1982. [13] D. Sarason. Generalized interpolation in H.

1910-40-52T23:59:59.000Z

395

Semicausal operations are semilocalizable  

E-Print Network [OSTI]

We prove a conjecture by DiVincenzo, which in the terminology of Preskill et al. [quant-ph/0102043] states that ``semicausal operations are semilocalizable''. That is, we show that any operation on the combined system of Alice and Bob, which does not allow Bob to send messages to Alice, can be represented as an operation by Alice, transmitting a quantum particle to Bob, and a local operation by Bob. The proof is based on the uniqueness of the Stinespring representation for a completely positive map. We sketch some of the problems in transferring these concepts to the context of relativistic quantum field theory.

Eggeling, T; Werner, R F

2002-01-01T23:59:59.000Z

396

Cognitive Limitations and Investment "Myopia"  

E-Print Network [OSTI]

Optimization of investment decisions in an uncertain and dynamically evolving environment is difficult due to the limitations of the decision makers cognitive capacity. Thus, actual investment decisions may deviate from ...

Chi, Tailan; Fan, Dashan

1997-01-01T23:59:59.000Z

397

Extremal Limits and Kerr Spacetime  

E-Print Network [OSTI]

The fact that one must evaluate the near-extremal and near-horizon limits of Kerr space-time in a specific order, is shown to a lead to discontinuity in the extremal limit, such that this limiting space-time differs nontrivially from the precisely extremal space-time. This is established by first showing a discontinuity in the extremal limit of the maximal analytic extension of the Kerr geometry, given by Carter. Next, we examine the ISCO of the exactly extremal Kerr geometry and show that on the event horizon of the extremal Kerr black hole, it coincides with the principal null geodesic generator of the horizon, having vanishing energy and angular momentum. We find that there is no such ISCO in the near-extremal geometry, thus garnering additional support for our primary contention. We relate this disparity between the two geometries to the lack of a trapping horizon in the extremal situation.

Parthapratim Pradhan; Parthasarathi Majumdar

2011-08-11T23:59:59.000Z

398

Spitzer White Dwarf Planet Limits  

E-Print Network [OSTI]

We present preliminary limits on the presence of planets around white dwarf stars using the IRAC photometer on the Spitzer space telescope. Planets emit strongly in the mid-infrared which allows their presence to be detected as an excess at these wavelengths. We place limits of $5 M_J$ for 8 stars assuming ages of $1 Gyr$, and $10 M_J$ for 23 stars.We describe our survey, present our results and comment on approaches to improve our methodology.

F. Mullally; Ted von Hippel; D. E. Winget

2006-10-28T23:59:59.000Z

399

Heat exchanger efficiently operable alternatively as evaporator or condenser  

DOE Patents [OSTI]

A heat exchanger adapted for efficient operation alternatively as evaporator or condenser and characterized by flexible outer tube having a plurality of inner conduits and check valves sealingly disposed within the outer tube and connected with respective inlet and outlet master flow conduits and configured so as to define a parallel flow path for a first fluid such as a refrigerant when flowed in one direction and to define a serpentine and series flow path for the first fluid when flowed in the opposite direction. The flexible outer tube has a heat exchange fluid, such as water, flowed therethrough by way of suitable inlet and outlet connections. The inner conduits and check valves form a package that is twistable so as to define a spiral annular flow path within the flexible outer tube for the heat exchange fluid. The inner conduits have thin walls of highly efficient heat transfer material for transferring heat between the first and second fluids. Also disclosed are specific materials and configurations.

Ecker, Amir L. (Dallas, TX)

1981-01-01T23:59:59.000Z

400

Proceedings of the flexible, midsize gas turbine program planning workshop  

SciTech Connect (OSTI)

The US Department of Energy (DOE) and the California Energy Commission (CEC) held a program planning workshop on March 4--5, 1997 in Sacramento, California on the subject of a flexible, midsize gas turbine (FMGT). The workshop was also co-sponsored by the Electric Power Research Institute (EPRI), the Gas Research Institute (GRI), the Gas Turbine Association (GTA), and the Collaborative Advanced Gas Turbine Program (CAGT). The purpose of the workshop was to bring together a broad cross section of knowledgeable people to discuss the potential benefits, markets, technical attributes, development costs, and development funding approaches associated with making this new technology available in the commercial marketplace. The participants in the workshop included representatives from the sponsoring organizations, electric utilities, gas utilities, independent power producers, gas turbine manufacturers, gas turbine packagers, and consultants knowledgeable in the power generation field. Thirteen presentations were given on the technical and commercial aspects of the subject, followed by informal breakout sessions that dealt with sets of questions on markets, technology requirements, funding sources and cost sharing, and links to other programs.

NONE

1997-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "limited operational flexibility" 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

Computational Fluid Dynamics Analysis of Flexible Duct Junction Box Design  

SciTech Connect (OSTI)

IBACOS explored the relationships between pressure and physical configurations of flexible duct junction boxes by using computational fluid dynamics (CFD) simulations to predict individual box parameters and total system pressure, thereby ensuring improved HVAC performance. Current Air Conditioning Contractors of America (ACCA) guidance (Group 11, Appendix 3, ACCA Manual D, Rutkowski 2009) allows for unconstrained variation in the number of takeoffs, box sizes, and takeoff locations. The only variables currently used in selecting an equivalent length (EL) are velocity of air in the duct and friction rate, given the first takeoff is located at least twice its diameter away from the inlet. This condition does not account for other factors impacting pressure loss across these types of fittings. For each simulation, the IBACOS team converted pressure loss within a box to an EL to compare variation in ACCA Manual D guidance to the simulated variation. IBACOS chose cases to represent flows reasonably correlating to flows typically encountered in the field and analyzed differences in total pressure due to increases in number and location of takeoffs, box dimensions, and velocity of air, and whether an entrance fitting is included. The team also calculated additional balancing losses for all cases due to discrepancies between intended outlet flows and natural flow splits created by the fitting. In certain asymmetrical cases, the balancing losses were significantly higher than symmetrical cases where the natural splits were close to the targets. Thus, IBACOS has shown additional design constraints that can ensure better system performance.

Beach, R.; Prahl, D.; Lange, R.

2013-12-01T23:59:59.000Z

402

Weaving time into system architecture : new perspectives on flexibility, spacecraft design lifetime, and on-orbit servicing  

E-Print Network [OSTI]

A roadmap for a comprehensive treatment of issues of flexibility in system design is developed that addresses the following questions: 1) What are the characteristic features of flexibility in system design? Can one clearly ...

Saleh, Joseph Homer, 1971-

2002-01-01T23:59:59.000Z

403

Operating System Resource Management  

E-Print Network [OSTI]

Operating System Resource Management Date: Monday, September 27, 2010 Time: 2:00 ­ 3:00 pm Location constrained. This talk will propose a scheme for addressing the operating system resource management problem Sciences Seminar Series presents Pacific Northwest National Laboratory Resource management is the dynamic

404

Ordered involutive operator spaces  

E-Print Network [OSTI]

This is a companion to recent papers of the authors; here we construct the `noncommutative Shilov boundary' of a (possibly nonunital) selfadjoint ordered space of Hilbert space operators. The morphisms in the universal property of the boundary preserve order. As an application, we consider `maximal' and `minimal' unitizations of such ordered operator spaces.

Blecher, David P; Neal, Matthew; Werner, Wend

2007-01-01T23:59:59.000Z

405

Operations Research + Information Engineering  

E-Print Network [OSTI]

and the equipment they operate to perform most efficiently. The allocation of resources may be represented of the techniques and modeling concepts needed to analyze and design complex systems. As an operations researcher. All business systems are complex and need sophisticated decision-making methods that enable employees

Keinan, Alon

406

MANUFACTURING & SERVICE OPERATIONS MANAGEMENT  

E-Print Network [OSTI]

;Green and Soares: Note Manufacturing & Service Operations Management 9(1), pp. 54­61, © 2007 INFORMS 55MANUFACTURING & SERVICE OPERATIONS MANAGEMENT Vol. 9, No. 1, Winter 2007, pp. 54­61 issn 1523-Dependent Waiting Time Probabilities in M t /M/s t Queuing Systems Linda V. Green Graduate School of Business

Soares, João Luís Cardoso

407

OPERATIONS MANAGEMENT Spring 2008  

E-Print Network [OSTI]

1 MGSC 395 OPERATIONS MANAGEMENT Spring 2008 Course Syllabus Instructor: Professor Anand Nair Class MATERIALS Required Text Books Textbook: Krajewski, Lee, Ritzman, Larry, and Malhotra, Manoj. Operations Management: Processes and Value Chains, 8 th edition, Prentice Hall, 2007. (ISBN: 0-13-187294-X). Novel

Almor, Amit

408

The LLNL HFTF (High-Field Test Facility): A flexible superconducting test facility for fusion magnet development  

SciTech Connect (OSTI)

The High-Field Test Facility (HFTF) is a flexible and, in many ways, unique facility at Lawrence Livermore National Laboratory (LLNL) for providing the test capabilities needed to develop the superconducting magnet systems of the next generation fusion machines. The superconducting coil set in HFTF has been operated successfully at LLNL, but in its original configuration, its utility as a test facility was somewhat restricted and cryogenic losses were intolerable. A new cryostat for the coil set allows the magnet system to remain cold indefinitely so the system is available on short notice to provide high fields (about 11 T) inside a reasonably large test volume (0.3-m diam). The test volume is physically and thermally isolated from the coil volume, allowing test articles to be inserted and removed without disturbing the coil cryogenic volume, which is maintained by an on-line refrigerator. Indeed, with the proper precautions, it is even unnecessary to drop the field in the HFTF during such an operation. The separate test volume also allows reduced temperature operation without the expense and complication of subcooling the entire coil set (about 20-t cold mass). The HFTF has thus become a key facility in the LLNL magnet development program, where the primary goal is to demonstrate the technology for producing fields to 15 T with winding-pack current densities of 40 A.mm/sup -2/ in coils sized for fusion applications. 4 refs., 4 figs., 1 tab.

Miller, J.R.; Chaplin, M.R.; Leber, R.L.; Rosdahl, A.R.

1987-09-17T23:59:59.000Z

409

Develop an effective Title V operating permit  

SciTech Connect (OSTI)

Under Title V of the 1990 Clean Air Act Amendments (CAAA), thousands of industrial and government facilities are required to apply for a comprehensive operating permit that addresses all the emission sources at a site and the CAA regulations that apply to them. The new permitting requirements apply to major sources only--although there are several definitions of a major source under the Amended Act. Because Title V applicability is based on potential to emit (PTE) rather than actual emissions, even small and medium sources may initially be subject to this program. Unlike other regulations, Title V puts the burden of demonstrating continuous compliance on source owners and operators. Careful attention to detail is necessary during the application process because the Title V permit is inherently an enforcement fool for the EPA and the general public. Noncompliance can lead to citizen suits and fines up to $25,000 per day. Therefore, it is critical to negotiate an operating permit that does not adversely impact current operations yet provides flexibility for future modifications. Each state and local agency has its own application forms and regulatory interpretations. Areas of complexity include the classification of emission units, the approach for the PTE calculation, the separation of federal and state-enforceable requirements, and the relationship between Title V and other CAAA titles. This article summarizes some lessons learned based upon experiences in various states. (It does not attempt to resolve program uncertainties among jurisdictions.) The practical strategies presented can be used for developing (or modifying) Title V applications as well as during permit negotiations.

Chadha, N.

1997-01-01T23:59:59.000Z

410

Flexible dye-sensitized solar cells with ZnO nanoparticles grown by Sonochemistry over Graphene/PET substrates.  

E-Print Network [OSTI]

Flexible dye-sensitized solar cells with ZnO nanoparticles grown by Sonochemistry over Graphene and Engineering University of North Texas, Denton, Texas Flexible Dye sensitized solar cells (FDSSCs) are light characteristics of ZnO nanostructures over Graphene/PET as photoanode for flexible dye sensitized solar cells. #12;

Pala, Nezih

411

Quantitative limiting absorption principle in the semiclassical limit  

E-Print Network [OSTI]

We give an elementary proof of Burq's resolvent bounds for long range semiclassical Schroedinger operators. Globally, the resolvent norm grows exponentially in the inverse semiclassical parameter, and near infinity it grows linearly. We also weaken the regularity assumptions on the potential.

Kiril Datchev

2014-04-08T23:59:59.000Z

412

Rex 2 : design, construction, and operation of an unmanned underwater vehicle  

E-Print Network [OSTI]

The practical usage of unmanned underwater vehicles (UUVs) is limited by vehicle and operation cost, difficulty in accurate navigation, and communication between the vehicle and operator. The "Rex 2" UUV employs a system ...

Owens, Dylan

2009-01-01T23:59:59.000Z

413

A flexible scintillation light apparatus for rare event searches  

E-Print Network [OSTI]

Compelling experimental evidences of neutrino oscillations and their implication that neutrinos are massive particles have given neutrinoless double beta decay a central role in astroparticle physics. In fact, the discovery of this elusive decay would be a major breakthrough, unveiling that neutrino and antineutrino are the same particle and that the lepton number is not conserved. It would also impact our efforts to establish the absolute neutrino mass scale and, ultimately, understand elementary particle interaction unification. All current experimental programs to search for neutrinoless double beta decay are facing with the technical and financial challenge of increasing the experimental mass while maintaining incredibly low levels of spurious background. The new concept described in this paper could be the answer which combines all the features of an ideal experiment: energy resolution, low cost mass scalability, isotope choice flexibility and many powerful handles to make the background negligible. The proposed technology is based on the use of arrays of silicon detectors cooled to 120 K to optimize the collection of the scintillation light emitted by ultra-pure crystals. It is shown that with a 54 kg array of natural CaMoO4 scintillation detectors of this type it is possible to yield a competitive sensitivity on the half-life of the neutrinoless double beta decay of 100Mo as high as ~10E24 years in only one year of data taking. The same array made of 40CaMoO4 scintillation detectors (to get rid of the continuous background coming from the two neutrino double beta decay of 48Ca) will instead be capable of achieving the remarkable sensitivity of ~10E25 years on the half-life of 100Mo neutrinoless double beta decay in only one year of measurement.

Valter Bonvicini; Silvia Capelli; Oliviero Cremonesi; Giacomo Cucciati; Luca Gironi; Maura Pavan; Ezio Previtali; Monica Sisti

2014-07-17T23:59:59.000Z

414

OPERATING TEMPERATURE WINDOWS FOR FUSION REACTOR STRUCTURAL MATERIALS  

E-Print Network [OSTI]

OPERATING TEMPERATURE WINDOWS FOR FUSION REACTOR STRUCTURAL MATERIALS S.J. Zinkle1 and N.M. Ghoniem reactor structural materials: four reduced-activation structural materials (oxide-dispersion- strengthened operating temperature limit of structural materials is determined by one of four factors, all of which

California at Los Angeles, University of

415

PRACTICAL APPLICATION OF THE SINGLE-PARAMETER SUBCRITICAL MASS LIMIT FOR PLUTONIUM METAL  

SciTech Connect (OSTI)

According to ANS-8.1, operations with fissile materials can be performed safely by complying with any of the listed single-parameter subcritical limits. For metallic units, when interspersed moderators are present, the mass limits apply to a single piece having no concave surfaces. On a practical level, when has any operation with fissile metal involved a single piece and absolutely no moderating material, e.g., water, oil, plastic, etc.? This would be rare. This paper explores the application of the single-parameter plutonium metal mass limit for realistic operational environments.

MITCHELL, MARK VON [Los Alamos National Laboratory

2007-01-10T23:59:59.000Z

416

Addressing the Challenges of RCCI Operation on a Light-Duty...  

Broader source: Energy.gov (indexed) [DOE]

+ ULSD EGR controls MPR but may adversely impact BTE due to EGR heat rejection and turbo-machinery limitations. Ethanol-gasoline blends enable higher load operation with...

417

E-Print Network 3.0 - affect grid operations Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

have tools to effectively and efficiently operate a grid with an increasing number... of micro grids affected areas can be isolated from the main networks limiting disruption. If...

418

E-Print Network 3.0 - accelerator operation feedback Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

are based on the use of a feedback controller. Concluding... been assumed. For the maximum vehicle acceleration demand the operation on the fueling rate limiter... gear:...

419

ccsd-00021443,version1-29Mar2006 Implementation of float-float operators on graphics hardware  

E-Print Network [OSTI]

ccsd-00021443,version1-29Mar2006 Implementation of float-float operators on graphics hardware Perpignan Cedex, France March 29, 2006 Abstract The Graphic Processing Unit (GPU) has evolved into a powerful and flexible processor. The latest graphic processors provide fully programmable vertex and pixel

Paris-Sud XI, Université de

420

sions (EC) directives have both legally and functionally separated rail operations from infrastructure ownership and management, the  

E-Print Network [OSTI]

infrastructure ownership and management, the government-owned national railways still maintain a symbiotic rela exhibiting high levels of utilization, and slots will eventually come to be viewed as the valuable resources, administrative, and operational improvements (2). In such an envi- ronment, flexible means for utilizing slots

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


421

Orthogonal Capability Building Blocks for Flexible AHS Deployment  

E-Print Network [OSTI]

System (AHS) was a user service that provides fully automated vehicle control on dedicated highway lanes to also consider lanes that serve both automated and manually operated vehicles. [NAHSC, 1996, chapter 7, PA 15213 USA Pittsburgh, PA 15213 USA ABSTRACT Once a baseline level of full automation is possible

Koopman, Philip

422

Electronic Unit Integrated Into A Flexible Polymer Body  

DOE Patents [OSTI]

A peel and stick electronic system comprises a silicone body, and at least one electronic unit operatively connected to the silicone body. The electronic system is produce by providing a silicone layer on a substrate, providing a metal layer on the silicone layer, and providing at least one electronic unit connected to the metal layer.

Krulevitch, Peter A. (Pleasanton, CA); Maghribi, Mariam N. (Livermore, CA); Benett, William J. (Livermore, CA); Hamilton, Julie K. (Tracy, CA); Rose, Klint A. (Mt. View, CA); Davidson, James Courtney (Livermore, CA); Strauch, Mark S. (Livermore, CA)

2006-01-31T23:59:59.000Z

423

Electronic unit integrated into a flexible polymer body  

DOE Patents [OSTI]

A peel and stick electronic system comprises a silicone body, and at least one electronic unit operatively connected to the silicone body. The electronic system is produce by providing a silicone layer on a substrate, providing a metal layer on the silicone layer, and providing at least one electronic unit connected to the metal layer.

Krulevitch, Peter A. (Pleasanton, CA); Maghribi, Mariam N. (Livermore, CA); Benett, William J. (Livermore, CA); Hamilton, Julie K. (Tracy, CA); Rose, Klint A. (Mt. View, CA); Davidson, James Courtney (Livermore, CA); Strauch, Mark S. (Livermore, CA)

2006-04-18T23:59:59.000Z

424

Electronic unit integrated into a flexible polymer body  

DOE Patents [OSTI]

A peel and stick electronic system comprises a silicone body, and at least one electronic unit operatively connected to the silicone body. The electronic system is produce by providing a silicone layer on a substrate, providing a metal layer on the silicone layer, and providing at least one electronic unit connected to the metal layer.

Krulevitch, Peter A. (Pleasanton, CA); Maghribi, Mariam N. (Livermore, CA); Benett, William J. (Livermore, CA); Hamilton, Julie K. (Tracy, CA); Rose, Klint A. (Mt. View, CA); Davidson, James Courtney (Livermore, CA); Strauch, Mark S. (Livermore, CA)

2008-03-11T23:59:59.000Z

425

OPUC Flexibility Planning Guidelines Pacific Northwest Demand Response Project  

E-Print Network [OSTI]

) Demand management smart grid controllable "withdrawal" and "recharge" #12;Jim Hicks Energy Strategies Jim Hicks Energy Strategies West, LLC #12;OPUC's New IRP Guidelines* Integrated Resource Plans operational view of planning, including comprehensive multi-faceted VER integration strategy #12;Daily Wind

426

Richland Operations Office  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Department of Energy Richland Operations Office P.O. Box 550 &?ATES0Richland, Washington 99352 10O-AMSE-0054 A PR I Mr. J. G. Lehew III, President and Chief Executive Officer...

427

Conduct of Operations  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Order defines the requirements for establishing and implementing Conduct of Operations Programs at Department of Energy (DOE), including National Nuclear Security Administration (NNSA), facilities and projects. Cancels DOE O 5480.19. Admin Chg 1, 6-25-13

2010-06-29T23:59:59.000Z

428

Richland Operations Office  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the internal dosimetry program. " S-li -SED-CHPRC-PFP-002-F1 1: Less than adequate conduct of operations was observed. Failures to follow procedures contributed to...

429

Operating plan FY 1998  

SciTech Connect (OSTI)

This document is the first edition of Argonne`s new Operating Plan. The Operating Plan complements the strategic planning in the Laboratory`s Institutional Plan by focusing on activities that are being pursued in the immediate fiscal year, FY 1998. It reflects planning that has been done to date, and it will serve in the future as a resource and a benchmark for understanding the Laboratory`s performance. The heart of the Institutional Plan is the set of major research initiatives that the Laboratory is proposing to implement in future years. In contrast, this Operating Plan focuses on Argonne`s ongoing R&D programs, along with cost-saving measures and other improvements being implemented in Laboratory support operations.

NONE

1997-10-01T23:59:59.000Z

430

Operations Security Program  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish policies, responsibilities and authorities for implementing and sustaining the Department of Energy (DOE) Operations Security (OPSEC) Program. Cancels DOE O 5632.3B. Canceled by DOE O 471.2 of 9-28-1995.

1992-04-30T23:59:59.000Z

431

Plant Operations Executive Director  

E-Print Network [OSTI]

Campus North Campus Recycling Operations Materials Human Resources Payroll Misc Svs Special Projects Planning Spray Shop Glass Shop Upholstery Shop Plant IT Painting Services G. Weincouff Human Resources Business Services Estimating Shutdown Coordination Scheduling L. Rastique Human Resources 67398 M

Awtar, Shorya

432

Transmission and Storage Operations  

Energy Savers [EERE]

to see minimal to none in static or dynamic mode) - Rates are dependent on size, mechanical wear and operating pressures * PM * PdM 5 Methane Release Reduction Can the gas be...

433

Continuity of Operations  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The notice defines requirements and responsibilities for continuity of operations planning within the DOE to ensure the capability to continue essential Departmental functions across a wide range of all hazard emergencies. Does not cancel other directives.

2005-01-14T23:59:59.000Z

434

SNS Target Systems Operational  

E-Print Network [OSTI]

a failed gas seal on the shaft and leaking oil seals but has operated well since then · The moderator 7.5 k First target replacement · No observed corrosion · Internal Boroscope examination in progress · ~ 50 mm

McDonald, Kirk

435

Protection Program Operations  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Order establishes requirements for the management and operation of the Department of Energy (DOE) Federal Protective Forces (FPF), Contractor Protective Forces (CPF), and the Physical Security of property and personnel under the cognizance of DOE.

2014-10-14T23:59:59.000Z

436

CH Packaging Operations Manual  

SciTech Connect (OSTI)

This procedure provides instructions for assembling the CH Packaging Drum payload assembly, Standard Waste Box (SWB) assembly, Abnormal Operations and ICV and OCV Preshipment Leakage Rate Tests on the packaging seals, using a nondestructive Helium (He) Leak Test.

Washington TRU Solutions LLC

2005-06-13T23:59:59.000Z

437

Nuclear material operations manual  

SciTech Connect (OSTI)

This manual provides a concise and comprehensive documentation of the operating procedures currently practiced at Sandia National Laboratories with regard to the management, control, and accountability of nuclear materials. The manual is divided into chapters which are devoted to the separate functions performed in nuclear material operations-management, control, accountability, and safeguards, and the final two chapters comprise a document which is also issued separately to provide a summary of the information and operating procedures relevant to custodians and users of radioactive and nuclear materials. The manual also contains samples of the forms utilized in carrying out nuclear material activities. To enhance the clarity of presentation, operating procedures are presented in the form of playscripts in which the responsible organizations and necessary actions are clearly delineated in a chronological fashion from the initiation of a transaction to its completion.

Tyler, R.P.

1981-02-01T23:59:59.000Z

438

Corporate Operating Experience Program  

Broader source: Energy.gov [DOE]

The DOE Corporate Operating Experience Program helps to prevent the recurrence of significant adverse events/trends by sharing performance information, lessons learned and good practices across the DOE complex.

439

Classical limits of unconstrained QFT  

E-Print Network [OSTI]

In nonrelativistic limits for states labeled by minimum packets with constrained spatial spreads and over a short term, states of unconstrained quantum field theories evolve on trajectories described by Newton's equations for the $1/r^2$ force. These states include bound solutions in the attractive force case.

Glenn Eric Johnson

2014-12-21T23:59:59.000Z

440

Review and Exams Limited Certification  

E-Print Network [OSTI]

__________________________________ Check which exam you will be taking: Commercial Landscape Maintenance Lawn & Ornamental CEU's ONLY 8 Limited Certification for Commercial Landscape Maintenance A license is necessary for each commercial landscape maintenance person who applies pesticides to ornamental plant beds. Application available at: http

Watson, Craig A.

Note: This page contains sample records for the topic "limited operational flexibility" 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

Operational Waste Volume Projection  

SciTech Connect (OSTI)

Waste receipts to the double-shell tank system are analyzed and wastes through the year 2015 are projected based on generation trends of the past 12 months. A computer simulation of site operations is performed, which results in projections of tank fill schedules, tank transfers, evaporator operations, tank retrieval, and aging waste tank usage. This projection incorporates current budget planning and the clean-up schedule of the Tri-Party Agreement. Assumptions were current as of June. 2000.

STRODE, J.N.

2000-08-28T23:59:59.000Z

442

Operational waste volume projection  

SciTech Connect (OSTI)

Waste receipts to the double-shell tank system are analyzed and wastes through the year 2015 are projected based on generation trends of the past 12 months. A computer simulation of site operations is performed, which results in projections of tank fill schedules, tank transfers, evaporator operations, tank retrieval, and aging waste tank usage. This projection incorporates current budget planning and the clean-up schedule of the Tri-Party Agreement. Assumptions were current as of June 1996.

Koreski, G.M.

1996-09-20T23:59:59.000Z

443

Radionuclide limits for vault disposal at the Savannah River Site  

SciTech Connect (OSTI)

The Savannah River Site is developing a facility called the E-Area Vaults which will serve as the new radioactive waste disposal facility beginning early in 1992. The facility will employ engineered below-grade concrete vaults for disposal and above-grade storage for certain long-lived mobile radionuclides. This report documents the determination of interim upper limits for radionuclide inventories and concentrations which should be allowed in the disposal structures. The work presented here will aid in the development of both waste acceptance criteria and operating limits for the E-Area Vaults. Disposal limits for forty isotopes which comprise the SRS waste streams were determined. The limits are based on total facility and vault inventories for those radionuclides which impact groundwater, and or waste package concentrations for those radionuclides which could affect intruders.

Cook, J.R.

1992-02-04T23:59:59.000Z

444

High Altitude Wind Power Systems: A Survey on Flexible Power Kites Mariam Ahmed*  

E-Print Network [OSTI]

High Altitude Wind Power Systems: A Survey on Flexible Power Kites Mariam Ahmed* Grenoble wind power using a kite-based system, and the proposed structures *Corresponding author Mariam.AHMED@g2

Boyer, Edmond

445

Attaching solar collectors to a structural framework utilizing a flexible clip  

DOE Patents [OSTI]

Methods and apparatuses described herein provide for the attachment of solar collectors to a structural framework in a solar array assembly. A flexible clip is attached to either end of each solar collector and utilized to attach the solar collector to the structural framework. The solar collectors are positioned to allow a member of the framework to engage a pair of flexible clips attached to adjacent solar collectors during assembly of the solar array. Each flexible clip may have multiple frame-engaging portions, each with a flange on one end to cause the flexible clip to deflect inward when engaged by the framework member during assembly and to guide each of the frame-engaging portions into contact with a surface of the framework member for attachment.

Kruse, John S

2014-03-25T23:59:59.000Z

446

Implementation of RFID in a low volume high flexibility assembly plant : item-level tagging  

E-Print Network [OSTI]

The implementation of an RFID checkpoint system in a low volume high flexibility assembly plant, aimed at tracking the flow of parts within the facility, was studied. A pilot revealed the suitability of the technology to ...

Koniski, Cyril (Cyril A.)

2010-01-01T23:59:59.000Z

447

Flexibility in building design : a real options approach and valuation methodology to address risk  

E-Print Network [OSTI]

This research develops an approach to designing and valuing flexible systems subject to identified future uncertainties. The approach addresses two shortcomings of current design and decision-making practices that are ...

Greden, Lara V. (Lara Virginia), 1977-

2005-01-01T23:59:59.000Z

448

Vibrational characteristics of a long and very flexible rotating fixed-free beam  

E-Print Network [OSTI]

The differential eigenvalue problem of a long and very flexible rotating fixed-free beam is studied. This kind of system produces a singular perturbation equation with a turning point. The perturbation factor arises because of the division...

Zarco Cruz, Juan Carlos

2003-01-01T23:59:59.000Z

449

Finite element simulation and parameter optimization of a flexible tactile pressure sensor array  

E-Print Network [OSTI]

A finite element model was developed to optimize design of a flexible tactile sensor. The sensor consists of layers of thin-film copper and PDMS, and the model can be used to determine the effects on sensor sensitivity and ...

Lee, Shira M. (Shira Miriam)

2005-01-01T23:59:59.000Z

450

FABRICATION AND CHARACTERIZATION OF 3-D ALL POLYMER FLEXIBLE SOLAR CELL  

E-Print Network [OSTI]

....................................................................................3 2 LITERATURE SURVEY ON THIN FILM ANDORGANIC/TANDEM SOLAR CELL........................................................................7 2.3 Thin Film Solar CellFABRICATION AND CHARACTERIZATION OF 3-D ALL POLYMER FLEXIBLE SOLAR CELL _______________ A Thesis

Kassegne, Samuel Kinde

451

Approved for Public Release, Distribution Unlimited Flexible and large area electronics (macroelectronics) using  

E-Print Network [OSTI]

(augmented) in important electronics applications, then the materials, processes, and devices availableApproved for Public Release, Distribution Unlimited 1 Flexible and large area electronics discuss the application drivers and the technology needs and device performance requirements to enable

Alam, Muhammad A.

452

Towards multi-domain speech understanding with flexible and dynamic vocabulary  

E-Print Network [OSTI]

In developing telephone-based conversational systems, we foresee future systems capable of supporting multiple domains and flexible vocabulary. Users can pursue several topics of interest within a single telephone call, ...

Chung, Grace Yuet-Chee

2001-01-01T23:59:59.000Z

453

Comparative Analysis of CFD ?P vs. Measured ?P for Compressed Flexible Ducts  

E-Print Network [OSTI]

Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Comparative Analysis of CFD [Delta]P vs. Measured [Delta]P for Compressed Flexible Ducts Ugursal, Ahmet;Culp, Charles ASHRAE Transactions; 2007...

Ugursal, A.; Culp, C.H.

454

A Cost-Effectiveness Analysis of Alternative Ozone Control Strategies: Flexible Nitrogen Oxide (NOx) Abatement  

E-Print Network [OSTI]

) Abatement from Power Plants in the Eastern United States by Lin Sun B.S. Chemistry, Peking University, China: Flexible Nitrogen Oxide (NOx) Abatement from Power Plants in the Eastern United States by Lin Sun Submitted

455

Estimation and Control of Flexible Space Structures for Autonomous On-Orbit Assembly  

E-Print Network [OSTI]

, David W. Miller June 2009 SSL # 8-09 #12;#12;Estimation and Control of Flexible Space Structures for Autonomous On-Orbit Assembly Jacob Katz, David W. Miller June 2009 SSL # 8-09 This work is based

456

Towards More Flexible Schema Management in Object Bases Guido Moerkotte Andreas Zachmann  

E-Print Network [OSTI]

Towards More Flexible Schema Management in Object Bases Guido Moerkotte Andreas Zachmann Universit¨at Karlsruhe Fakult¨at f¨ur Informatik D­7500 Karlsruhe West Germany Netmail: moer/zachmann@ira.uka.de Abstract

Mannheim, Universität

457

Stochastic Modeling of Future Highway Maintenance Costs for Flexible Type Highway Pavement Construction Projects  

E-Print Network [OSTI]

that affect pavement performances; 2) develop a stochastic model that predicts future maintenance costs of flexible-type pavement in Texas. The study data were gathered through the Pavement Management Information System (PMIS) containing more than 190...

Kim, Yoo Hyun

2012-07-16T23:59:59.000Z

458

Near-minimum-time three-dimensional maneuvers of rigid and flexible spacecraft  

E-Print Network [OSTI]

The purpose of this research is to control the attitude of rigid and flexible spacecraft in three-dimensions in a minimal amount of time. Vibration suppression will be accomplished passively using input smoothing, which is extremely important when...

Bell, Mark James

1993-01-01T23:59:59.000Z

459

Quantitative performance-based evaluation of a procedure for flexible design concept generation  

E-Print Network [OSTI]

This thesis presents an experimental methodology for objective and quantitative design procedure evaluation based on anticipated lifecycle performance of design concepts, and a procedure for flexible design concept generation. ...

Cardin, Michel-Alexandre, 1979-

2011-01-01T23:59:59.000Z

460

A 3D finite element method for flexible multibody Johannes Gerstmayr, Joachim Schoberl  

E-Print Network [OSTI]

-blade of a helicopter or the stability of a satellite with highly flexible solar panels, see Bremer [5]. While most methods. This is applicable for the case for several engineering applications, like a gear unit

Schoeberl, Joachim

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


461

A configuration and analysis for damping oscillations in flexible robotic arms using passive elements  

E-Print Network [OSTI]

A hardware configuration that reduces excessive oscillation in flexible robotic arms is presented and analyzed. An experimental apparatus was constructed and proved to effectively damp unwanted oscillations using passive components. Equations...

Compere, Marc Damon

1996-01-01T23:59:59.000Z

462

Reverse engineering nature : design principles for flexible protection inspired by ancient fish armor of Polypteridae  

E-Print Network [OSTI]

This thesis is about designing structures that combine the dual functions of mechanical protection and flexibility of motion. The structures are inspired by principles observed in the ganoid squamation (scale assembly) of ...

Reichert, Steffen H. (Steffen Heinz)

2010-01-01T23:59:59.000Z

463

Flexible design : an innovative approach for planning water infrastructure systems under uncertainty  

E-Print Network [OSTI]

This thesis develops a framework for a flexible design approach to support decision-making in water supply infrastructure planning. It contrasts with a conventional, deterministic planning approach that uses past data or ...

Wong, Melanie Kathleen

2013-01-01T23:59:59.000Z

464

Flexible Split-Ring Electrode for Insect Flight Biasing Using Multisite Neural Stimulation  

E-Print Network [OSTI]

We describe a flexible multisite microelectrode for insect flight biasing using neural stimulation. The electrode is made of two layers of polyimide (PI) with gold sandwiched in between in a split-ring geometry. The ...

Tsang, Wei Mong

465

Design of passive decay heat removal system for the lead cooled flexible conversion ratio fast reactor  

E-Print Network [OSTI]

The lead-cooled flexible conversion ratio fast reactor shows many benefits over other fast-reactor designs; however, the higher power rating and denser primary coolant present difficulties for the design of a passive decay ...

Whitman, Joshua (Joshua J.)

2007-01-01T23:59:59.000Z

466

Numerical investigation of the flow-body interaction of thin flexible foils and ambient flow  

E-Print Network [OSTI]

Flow-induced flapping of flexible thin bodies is oft observed in our day-to-day lives in phenomena such as flag flapping, and is important in a host of engineering applications. Despite its prevalence, however, this ...

Connell, Benjamin S. H

2006-01-01T23:59:59.000Z

467

The design of a fast and flexible Internet subscription system using content graphics  

E-Print Network [OSTI]

This dissertation describes the design and evaluation of the Fast, Flexible Forwarding system (F3), a distributed system for disseminating information to networked subscribers. It examines existing subscription approaches, ...

Kulik, Joanna L

2004-01-01T23:59:59.000Z

468

Thermal hydraulic design and analysis of a large lead-cooled reactor with flexible conversion ratio  

E-Print Network [OSTI]

This thesis contributes to the Flexible Conversion Ratio Fast Reactor Systems Evaluation Project, a part of the Nuclear Cycle Technology and Policy Program funded by the Department of Energy through the Nuclear Energy ...

Nikiforova, Anna S., S.M. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

469

Quantitative prediction of 3D solution shape and flexibility of nucleic acid nanostructures  

E-Print Network [OSTI]

DNA nanotechnology enables the programmed synthesis of intricate nanometer-scale structures for diverse applications in materials and biological science. Precise control over the 3D solution shape and mechanical flexibility ...

Kilchherr, F.

470

Abstract--Flexible spectrum sharing is widely seen to be important feature for the future  

E-Print Network [OSTI]

systems. Efficient implementation of spectrum sharing requires novel radio resource management (RRM the spectrum sharing with systems using other radio access technologies. The proposed architecture provides. Index Terms -- Beyond 3G systems, flexible spectrum use, radio resource management, spectrum sharing

471

Acceptance test report for the 241-SY-101 Flexible Receiver Gamma Detector System  

SciTech Connect (OSTI)

This Acceptance Test Report is for the 241-SY-101 Flexible Receiver Gamma Detector System. This test verified that the data logger and data converter for the gamma detector system functions as intended.

Dowell, J.L.

1995-02-17T23:59:59.000Z

472

Prevent injuries and increase your performance with appropriate bicycle fitting, flexibility, stability  

E-Print Network [OSTI]

Prevent injuries and increase your performance with appropriate bicycle fitting, flexibility, stability and technique. Explore the interplay between bicycle position and body mechanics. Tests performed in the UC Davis Sports Medicine Laboratory include Bicycle Fitting, Torque Analysis and Physiological Tests

Schladow, S. Geoffrey

473

Evaluation of tire pressure, tire construction, axle configuration, and axle load on flexible pavement performance  

E-Print Network [OSTI]

EVALUATION OF TIRE PRESSURE, TIRE CONSTRUCTION, AXLE CONFIGURATION, AND AXLE LOAD ON FLEXIBLE PAVEMENT PERFORMANCE A Thesis by AHMAD NAJEEB JAMY Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 1991 Major Subject: Civil Engineering EVALUATION OF TIRE PRESSURE, TIRE CONSTRUCTION, AXLE CONFIGURATION, AND AXLE LOAD ON FLEXIBLE PAVEMENT PERFORMANCE. A Thesis by AHMAD NAJEEB JAMY Approved...

Jamy, Ahmad Najeeb

1991-01-01T23:59:59.000Z

474

Conformational stability, flexibility, and steady-state activity of Ribonuclease T1 variants  

E-Print Network [OSTI]

CONFORMATIONAL STABILITY, FLEXIBILITY, AND STEADY ? STATE ACTIVITY OF RIBONUCLEASE T1 VARIANTS A Thesis by BRIAN JUDSON HUBBARD Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1995 Major Subject: Chemistry CONFORMATIONAL STABILITY, FLEXIBILITY, AND STEADY ? STATE ACTIVITY OF RIBONUCLEASE Tl VARIANTS A Thesis by BRIAN JUDSON HUBBARD Submitted to Texas A8dVl University in partial...

Hubbard, Brian Judson

2012-06-07T23:59:59.000Z

475

Comparative Study: CFD ?P Versus Measured ?P for 30% Flexible Ducts  

E-Print Network [OSTI]

very close comparison with measured results. Flexible ducts can be installed in a variety of configurations with different compression. A configuration was specified for this study which focused on 30% compressed 5 foot-long flexible duct and 2... foot-long circular ducts placed on both ends. A CFD model was built and simulations were run under different volumetric air flows. The static pressure drop for those conditions were analyzed and displayed. The final CFD model is tuned until...

Ugursal, A.; Culp, C.

2006-01-01T23:59:59.000Z

476

Initial operation of FRX-C  

SciTech Connect (OSTI)

FRX-C, a field-reversed theta-pinch experiment that has recently been placed into operation, has as its objectives to: (1) determine the scaling of field reversed configuration (FRC) confinement with size and clarify the mechanism(s) that limit confinement of an FRC; (2) increase the FRC lifetime by increasing the size by a factor of two (eight in volume) over past experiments; (3) form FRCs with temperatures in the 0.1 to 1.0 keV range and densities in the range of 10/sup 15/ to /sup 16/cm/sup -3/; and (4) build on the results of the smaller FRX-A and FRX-B/sup 1/ experiments. Preliminary results are given based on the limited number of plasma shots (42) since the machine was placed into operation on September 2, 1981. Parameters of the experimental hardware are also given below.

Armstrong, W.T.; Bartsch, R.R.; Cochrane, J.C.

1981-01-01T23:59:59.000Z

477

14%-efficient flexible CdTe solar cells on ultra-thin glass substrates  

SciTech Connect (OSTI)

Flexible glass enables high-temperature, roll-to-roll processing of superstrate devices with higher photocurrents than flexible polymer foils because of its higher optical transmission. Using flexible glass in our high-temperature CdTe process, we achieved a certified record conversion efficiency of 14.05% for a flexible CdTe solar cell. Little has been reported on the flexibility of CdTe devices, so we investigated the effects of three different static bending conditions on device performance. We observed a consistent trend of increased short-circuit current and fill factor, whereas the open-circuit voltage consistently dropped. The quantum efficiency under the same static bend condition showed no change in the response. After storage in a flexed state for 24 h, there was very little change in device efficiency relative to its unflexed state. This indicates that flexible glass is a suitable replacement for rigid glass substrates, and that CdTe solar cells can tolerate bending without a decrease in device performance.

Rance, W. L.; Burst, J. M.; Reese, M. O.; Gessert, T. A.; Metzger, W. K.; Barnes, T. M. [National Renewable Energy Laboratory, Golden, Colorado 80401 (United States); Meysing, D. M.; Wolden, C. A. [Colorado School of Mines, Golden, Colorado 80401 (United States); Garner, S.; Cimo, P. [Corning Incorporated, Corning, New York 14831 (United States)

2014-04-07T23:59:59.000Z

478

Examination system utilizing ionizing radiation and a flexible, miniature radiation detector probe  

DOE Patents [OSTI]

An optimized examination system and method based on the Reverse Geometry X-Ray.RTM. (RGX.RTM.) radiography technique are presented. The examination system comprises a radiation source, at least one flexible, miniature radiation detector probe positioned in appropriate proximity to the object to be examined and to the radiation source with the object located between the source and the probe, a photodetector device attachable to an end of the miniature radiation probe, and a control unit integrated with a display device connected to the photodetector device. The miniature radiation detector probe comprises a scintillation element, a flexible light guide having a first end optically coupled to the scintillation element and having a second end attachable to the photodetector device, and an opaque, environmentally-resistant sheath surrounding the flexible light guide. The probe may be portable and insertable, or may be fixed in place within the object to be examined. An enclosed, flexible, liquid light guide is also presented, which comprises a thin-walled flexible tube, a liquid, preferably mineral oil, contained within the tube, a scintillation element located at a first end of the tube, closures located at both ends of the tube, and an opaque, environmentally-resistant sheath surrounding the flexible tube. The examination system and method have applications in non-destructive material testing for voids, cracks, and corrosion, and may be used in areas containing hazardous materials. In addition, the system and method have applications for medical and dental imaging.

Majewski, Stanislaw (Grafton, VA); Kross, Brian J. (Yorktown, VA); Zorn, Carl J. (Yorktown, VA); Majewski, Lukasz A. (Grafton, VA)

1996-01-01T23:59:59.000Z

479

Examination system utilizing ionizing radiation and a flexible, miniature radiation detector probe  

DOE Patents [OSTI]

An optimized examination system and method based on the Reverse Geometry X-Ray{trademark} (RGX{trademark}) radiography technique are presented. The examination system comprises a radiation source, at least one flexible, miniature radiation detector probe positioned in appropriate proximity to the object to be examined and to the radiation source with the object located between the source and the probe, a photodetector device attachable to an end of the miniature radiation probe, and a control unit integrated with a display device connected to the photodetector device. The miniature radiation detector probe comprises a scintillation element, a flexible light guide having a first end optically coupled to the scintillation element and having a second end attachable to the photodetector device, and an opaque, environmentally-resistant sheath surrounding the flexible light guide. The probe may be portable and insertable, or may be fixed in place within the object to be examined. An enclosed, flexible, liquid light guide is also presented, which comprises a thin-walled flexible tube, a liquid, preferably mineral oil, contained within the tube, a scintillation element located at a first end of the tube, closures located at both ends of the tube, and an opaque, environmentally-resistant sheath surrounding the flexible tube. The examination system and method have applications in non-destructive material testing for voids, cracks, and corrosion, and may be used in areas containing hazardous materials. In addition, the system and method have applications for medical and dental imaging. 5 figs.

Majewski, S.; Kross, B.J.; Zorn, C.J.; Majewski, L.A.

1996-10-22T23:59:59.000Z

480

Bioethanol Limited | Open Energy Information  

Open Energy Info (EERE)

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Note: This page contains sample records for the topic "limited operational flexibility" from the National Library of EnergyBeta (NLEBeta).
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481

Combustion lean limits fundamentals and their application to a SI hydrogen-enhanced engine concept  

E-Print Network [OSTI]

Operating an engine with excess air, under lean conditions, has significant benefits in terms of increased engine efficiency and reduced emissions. However, under high dilution levels, a lean limit is reached where combustion ...

Ayala, Ferran A. (Ferran Alberto), 1976-

2006-01-01T23:59:59.000Z

482

RADCAL Operations Manual Radiation Calibration Laboratory Protocol  

SciTech Connect (OSTI)

The Life Sciences Division (LSD) of Oak Ridge National Laboratory (ORNL) has a long record of radiation dosimetry research, primarily using the Health Physics Research Reactor (HPRR) and the Radiation Calibration Laboratory (RADCAL) in its Dosimetry Applications Research (DOSAR) Program. These facilities have been used by a broad segment of the research community to perform a variety of experiments in areas including, but not limited to, radiobiology, radiation dosimeter and instrumentation development and calibration, and the testing of materials in a variety of radiation environments. Operations of the HPRR were terminated in 1987 and the reactor was moved to storage at the Oak Ridge Y-12 Plant; however, RADCAL will continue to be operated in accordance with the guidelines of the National Institute of Standards and Technology (NIST) Secondary Calibration Laboratory program and will meet all requirements for testing dosimeters under the National Voluntary Laboratory Accreditation Program (NVLAP). This manual is to serve as the primary instruction and operation manual for the Oak Ridge National Laboratory's RADCAL facility. Its purpose is to (1) provide operating protocols for the RADCAL facility, (2) outline the organizational structure, (3) define the Quality Assurance Action Plan, and (4) describe all the procedures, operations, and responsibilities for the safe and proper operation of all routine aspects of the calibration facility.

Bogard, J.S.

1998-12-01T23:59:59.000Z

483

SSCL Commissioning and Operations  

SciTech Connect (OSTI)

The SSC, with an energy of 20 TeV/Beam, requires a sequence of individual accelerators of increasing energy in the injector chain. These are the Linac, Low Energy Booster, Medium Energy Booster, and High Energy Booster. Each accelerator system must be completed in sequence in order to provide beam to the next higher energy accelerator. The collider itself is comprised of ten sectors, each of which in terms of superconducting magnet bending strength, is equivalent to two HEB injectors. The completion of all injectors and collider sectors is required before stored beams can circulate in preparation for colliding beam operation. Four experimental halls are planned for the detector systems. Each major detector will be assembled in one of the halls by a world-wide collaboration of scientists. In addition, above ground facilities provide shops and test facilities for accelerator technical systems, superconducting magnet and materials research and development, and for detector assembly and operations. The purpose of this report is to present a plan for the sequential commissioning and operation of these individual accelerators and other technical facilities of the SSC. A central objective of this plan is to describe the activities at the SSCL that are not included as part of the construction project TPC, even though they occur during the overall project construction time-frame. Examples of such activities include the operation of general laboratory facilities and services not specifically related to construction, the operating costs for the individual accelerators in the injector chain once these facilities have been commissioned, and the costs of SSCL physics research groups. The Department of Energy has provided the following decision with regard to these operations categories for the SSCL.

NONE

1992-03-31T23:59:59.000Z

484

Updated July 2009 Operations Organization  

E-Print Network [OSTI]

All-Hands, Brown Bags, and COO Open-Door sessions Ongoing Conduct Operations Employee Climate SurveysOperations Strategic Plan Updated July 2009 #12;Operations Organization Chief Operating Officer deliver exceptional operational services in support of the scientific mission of Berkeley Lab. goals

Eisen, Michael

485

A flexible location management scheme for mobile computing  

E-Print Network [OSTI]

&rib?ted Database Manage- ment. System (DDBMS) is the clevelopirient, p)atlo& m, and we are using Proc"'C with el&lbeddi (I SQL. Though t, he two Viv&IX workstation& are accessing thi. san&e ORA- CLE server at SparcServer l000, they are using indcpen&leut dat, a..., objects. In fact, , these data objects can he distributed among s&vcral network hosts usiug OKACLE SQL NET ivithoiit any modihcation of the codes foi thc location operations. The Chent (UltraSparc: dasher) Client (UltraSparc: dancer) ORACLE Server...

Zhang, Ying

1996-01-01T23:59:59.000Z

486

A supervisory control system for a flexible manufacturing system  

E-Print Network [OSTI]

. AUTOMATION LAB 3. 1 The FMS System Project in The I. E. Automat i on Lab 12 17 17 20 21 23 23 3. 2 Program Structure and Functional Tasks 23 TABLE OF CONTENTS (continued) 3. 3 Special Functions, Subroutines, and DXIO Supervisor Calls 29 3. 3. 1... TASK ID: ) 4 PRIORITY: R30 FUNCTIONS: 1. Assign part No. (new part) 2. Update system status 3. Schedule next operation 4. Put order in CMDQ if cart busy 5. Output production order 6. Activate INTERFACE MODULE 7. Activate DATA ACQUISITION...

Chen, Shih-Fang Simon

1983-01-01T23:59:59.000Z

487

Hoyte Phifer Facilities Operations  

E-Print Network [OSTI]

battery operated clocks in offices. #12;#12;·Last year, UNCG produced over 1973 tons of solid waste. · 1. , corner of Highland Ave. and Oakland ­ red brick building #12;#12; "All State agencies, universities, and community colleges that have State-owned vehicle fleets shall develop and implement plans to improve

Saidak, Filip

488

Concept of Operations: Essence  

SciTech Connect (OSTI)

This concept of operations is designed to give the reader a brief overview of the National Rural Electric Cooperative Associations Essence project and a description of the Essence device design. The data collected by the device, how the data are used, and how the data are protected are also discussed in this document.

Hutton, William J.

2014-04-01T23:59:59.000Z

489

Conduct of Operations  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Order defines the requirements for establishing and implementing Conduct of Operations Programs at Department of Energy (DOE), including National Nuclear Security Administration (NNSA), facilities and projects. Cancels DOE O 5480.19. Admin Chg 1, dated 6-25-13, cancels DOE O 422.1. Certified 12-3-14.

2010-06-29T23:59:59.000Z

490

Finance & Operations Vice President,  

E-Print Network [OSTI]

Operations · Public Safety Educational Outreach · Safe IA Partnership (S.I.P) · Security Guard Programs Assistance Program · Employee Immigration Services · Employee Disability Services · Family Services · Compensation & Classification · Employee & Labor Relations · Employment Services · Family Issues Committee

Stanier, Charlie

491

REACTOR OPERATIONS AND CONTROL  

E-Print Network [OSTI]

REACTOR OPERATIONS AND CONTROL KEYWORDS: core calculations, neural networks, control rod elevation of a control rod, or a group of control rods, is an important parameter from the viewpoint of reactor control DETERMINATION OF PWR CONTROL ROD POSITION BY CORE PHYSICS AND NEURAL NETWORK METHODS NINOS S. GARIS* and IMRE

Pázsit, Imre

492

Intelligent Potroom Operation  

SciTech Connect (OSTI)

The Intelligent Potroom Operation project focuses on maximizing the performance of an aluminum smelter by innovating components for an intelligent manufacturing system. The Intelligent Potroom Advisor (IPA) monitors process data to identify reduction cells exhibiting behaviors that require immediate attention. It then advises operational personnel on those heuristic-based actions to bring the cell back to an optimal operating state in order to reduce the duration and frequency of substandard reduction cell performance referred to as ''Off-Peak Modes'' (OPMs). Techniques developed to identify cells exhibiting OPMs include the use of a finite element model-based cell state estimator for defining the cell's current operating state via advanced cell noise analyses. In addition, rule induction was also employed to identify statistically significant complex behaviors that occur prior to OPMs. The intelligent manufacturing system design, concepts and formalisms developed in this project w ere used as a basis for an intelligent manufacturing system design. Future research will incorporate an adaptive component to automate continuous process improvement, a technology platform with the potential to improve process performance in many of the other Industries of the Future applications as well.

Jan Berkow; Larry Banta

2003-07-29T23:59:59.000Z

493

NUCLEAR PLANT OPERATIONS AND  

E-Print Network [OSTI]

NUCLEAR PLANT OPERATIONS AND CONTROL KEYWORDS: moderator temper ature coefficient, reactivity co reactor Unit 4 of the Ringhals Nuclear Power Plant (Sweden) during fuel cycle 16 is analyzed absorption cross-section behavior. Consequently, if NUCLEAR TECHNOLOGY VOL. 140 NOV. 2002 147 #12;Demazire

Demazire, Christophe

494

NUCLEAR PLANT OPERATIONS AND  

E-Print Network [OSTI]

NUCLEAR PLANT OPERATIONS AND CONTROL KEYWORDS: moderator temper- ature coefficient, reactivity co reactor Unit 4 of the Ringhals Nuclear Power Plant (Sweden) during fuel cycle 16 is analyzed. Consequently, if*E-mail: demaz@nephy.chalmers.se NUCLEAR TECHNOLOGY VOL. 140 NOV. 2002 147 #12;high-burnup fuel

Pzsit, Imre

495

Hamiltonian and Volume Operators  

E-Print Network [OSTI]

2+1 gravity coupled to a massless scalar field has an initial singularity when the spatial slices are compact. The quantized model is used here to investigate several issues of quantum gravity. The spectrum of the volume operator is studied at the initial singularity. The energy spectrum is obtained. Dynamics of the universe is also investigated.

M. Pierri

2002-01-04T23:59:59.000Z

496

Office of Business Operations  

Broader source: Energy.gov [DOE]

The Office of Business Operations manages financial and acquisition management programs throughout the Associate Under Secretary for the Office of Environment, Health, Safety and Security (AU), including the formulation and execution of the AU budget; funding control and accounting activities; preparation of management studies; and provision of acquisition management support.

497

RUNWAY OPERATIONAL QUALITY ASSURANCE  

E-Print Network [OSTI]

RUNWAY OPERATIONAL QUALITY ASSURANCE MELANIE BAKER, DARIC MEGERSA & ALFONSO PANLILIO Sponsors: Dr Vortex Separation Rule, for a homogeneous fleet mix, is determined by the time between arriving aircraft Occupancy (SRO) rule, for a non- homogeneous fleet mix, MTC= 3600/ [ROT] [ROT]= = i (pi *ROTi) ROT (in sec

498

Dose Limits | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office of Audit ServicesMirant Potomac River Compliance Plan |DocumentDoingDorm RoomLimits

499

Theoretical Limits of Photovoltaics Efficiency and Possible Improvements by Intuitive Approaches Learned from Photosynthesis and Quantum Coherence  

E-Print Network [OSTI]

In this review, we present and discussed the main trends in photovoltaics with emphasize on the conversion efficiency limits. The theoretical limits of various photovoltaics device concepts are presented and analyzed using a flexible detailed balance model where more discussion emphasize is toward the losses. Also, few lessons from nature and other fields to improve the conversion efficiency in photovoltaics are presented and discussed as well. From photosynthesis, the perfect exciton transport in photosynthetic complexes can be utilized for PVs. Also, we present some lessons learned from other fields like recombination suppression by quantum coherence. For example, the coupling in photosynthetic reaction centers is used to suppress recombination in photocells.

Fahhad H Alharbi; Sabre Kais

2014-02-09T23:59:59.000Z

500

Operations and Maintenance Program Structure  

Broader source: Energy.gov [DOE]

The Federal Energy Management Program recommends Federal operations and maintenance (O&M) programs comprise of five distinct functions: operations, maintenance, engineering, training, and...