Sample records for transportation system efficiency

  1. TRANSPORTATION SYSTEMS are the build-ing blocks of modern society. Efficient and

    E-Print Network [OSTI]

    Storici, Francesca

    TRANSPORTATION SYSTEMS are the build- ing blocks of modern society. Efficient and safe movement. How- ever, transportation systems by their very nature also affect the environment through operations, construction, and maintenance of transportation facilities, and through the travel behaviors they encourage

  2. GUIDE TO CALCULATING TRANSPORT EFFICIENCY OF AEROSOLS IN OCCUPATIONAL AIR SAMPLING SYSTEMS

    SciTech Connect (OSTI)

    Hogue, M.; Hadlock, D.; Thompson, M.; Farfan, E.

    2013-11-12T23:59:59.000Z

    This report will present hand calculations for transport efficiency based on aspiration efficiency and particle deposition losses. Because the hand calculations become long and tedious, especially for lognormal distributions of aerosols, an R script (R 2011) will be provided for each element examined. Calculations are provided for the most common elements in a remote air sampling system, including a thin-walled probe in ambient air, straight tubing, bends and a sample housing. One popular alternative approach would be to put such calculations in a spreadsheet, a thorough version of which is shared by Paul Baron via the Aerocalc spreadsheet (Baron 2012). To provide greater transparency and to avoid common spreadsheet vulnerabilities to errors (Burns 2012), this report uses R. The particle size is based on the concept of activity median aerodynamic diameter (AMAD). The AMAD is a particle size in an aerosol where fifty percent of the activity in the aerosol is associated with particles of aerodynamic diameter greater than the AMAD. This concept allows for the simplification of transport efficiency calculations where all particles are treated as spheres with the density of water (1 g?cm-3). In reality, particle densities depend on the actual material involved. Particle geometries can be very complicated. Dynamic shape factors are provided by Hinds (Hinds 1999). Some example factors are: 1.00 for a sphere, 1.08 for a cube, 1.68 for a long cylinder (10 times as long as it is wide), 1.05 to 1.11 for bituminous coal, 1.57 for sand and 1.88 for talc. Revision 1 is made to correct an error in the original version of this report. The particle distributions are based on activity weighting of particles rather than based on the number of particles of each size. Therefore, the mass correction made in the original version is removed from the text and the calculations. Results affected by the change are updated.

  3. Transport Efficiency Of The Human Placenta Qinglan Xia1

    E-Print Network [OSTI]

    Xia, Qinglan

    Transport Efficiency Of The Human Placenta Qinglan Xia1 and Carolyn Salafia2 1 Department. In this article, we quantify efficiency of the transport system in the human placenta and study its role played for the placenta, in a simplified form by an idealized optimal transport network. We study transport efficiency

  4. Transforming California's Freight Transport System

    E-Print Network [OSTI]

    California at Davis, University of

    Transforming California's Freight Transport System Policy Forum on the Role of Freight Transport Standard #12;2050 Vision- Key Conceptual Outcomes Technology Transformation Early Action Cleaner Combustion Multiple Strategies Federal Action Efficiency Gains Energy Transformation 9 #12;Further reduce localized

  5. The impact of aircraft design reference mission on fuel efficiency in the air transportation system

    E-Print Network [OSTI]

    Yutko, Brian M. (Brian Matthew)

    2014-01-01T23:59:59.000Z

    Existing commercial aircraft are designed for high mission flexibility, which results in decreased fuel efficiency throughout the operational life of an aircraft. The objective of this research is to quantify the impact ...

  6. Supertruck - Improving Transportation Efficiency through Integrated...

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

    Research Supertruck - Improving Transportation Efficiency through Integrated Vehicle, Engine and Powertrain Research 2012 DOE Hydrogen and Fuel Cells Program and Vehicle...

  7. Efficient Transportation Decision Public Web Site: Bridging the Gap Between Transportation Planning and the Public

    E-Print Network [OSTI]

    Roaza, Ruth

    2007-01-01T23:59:59.000Z

    for accomplishing transportation planning and projectprocess – the Efficient Transportation Decision Making (Process - is to make transportation decisions more quickly

  8. Rural Intelligent Transportation Systems

    E-Print Network [OSTI]

    Minnesota, University of

    Rural Intelligent Transportation Systems In a technical session at the 2011 NACE conference, Dennis Foderberg of SEH Inc. discussed intelligent transportation systems (ITS) developed by SEH in collaboration with Network Transportation Technologies, Inc. These systems address the problem of crashes on low-volume roads

  9. Expert systems in transportation

    SciTech Connect (OSTI)

    O'Leary, K.P.

    1988-01-01T23:59:59.000Z

    The 5 papers in the report deal with the following areas: Knowledge representation and software selection for expert-systems design; Expert-system architecture for retaining-wall design; Development of expert-systems technology in the California Department of Transportation; Development of an expert system to assist in the interactive graphic transit system design process; Expert systems development for contingency transportation planing.

  10. Electrical and Thermal Transport Optimization of High Efficient...

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

    Electrical and Thermal Transport Optimization of High Efficient n-type Skutterudites Electrical and Thermal Transport Optimization of High Efficient n-type Skutterudites Work on...

  11. Transportation Decision Support Systems Oak Ridge National Laboratory

    E-Print Network [OSTI]

    Transportation Decision Support Systems Oak Ridge National Laboratory managed by UT-Battelle, LLC Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle and implementation of automated transportation decision support models for the scheduling and routing of cargo

  12. Smart vehicular transportation systems

    SciTech Connect (OSTI)

    Little, C.Q.; Wilson, C.W.

    1997-05-01T23:59:59.000Z

    This work builds upon established Sandia intelligent systems technology to develop a unique approach for the integration of intelligent system control into the US Highway and urban transportation systems. The Sandia developed concept of the COPILOT controller integrates a human driver with computer control to increase human performance while reducing reliance on detailed driver attention. This research extends Sandia expertise in sensor based, real-time control of robotics systems to high speed transportation systems. Knowledge in the form of maps and performance characteristics of vehicles provides the automatic decision making intelligence needed to plan optimum routes, maintain safe driving speeds and distances, avoid collisions, and conserve fuel.

  13. Washington State’s Transportation Permit Efficiency and Accountability Committee (TPEAC)

    E-Print Network [OSTI]

    Aberle, Barbara

    2005-01-01T23:59:59.000Z

    as the Transportation Permit Efficiency and Accountability (the Transportation Permit Efficiency and Accountabilityrequired to obtain permits. Passage of the Transportation

  14. Sandia Energy - Transportation Energy Systems Analysis

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

    Transportation Energy Systems Analysis Home Transportation Energy Predictive Simulation of Engines Transportation Energy Systems Analysis Transportation Energy Systems AnalysisTara...

  15. Transport Studies Enabling Efficiency Optimization of Cost-Competitive...

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

    Studies Enabling Efficiency Optimization of Cost-Competitive Fuel Cell Stacks Transport Studies Enabling Efficiency Optimization of Cost-Competitive Fuel Cell Stacks Presented at...

  16. Improving Efficiency and Equity in Transportation Finance

    E-Print Network [OSTI]

    Watts, Michael

    2006-01-01T23:59:59.000Z

    Fueling Transportation Finance. ” Ian W. H. Parry andFueling Transportation Finance. ” Transportation ResearchFueling Transportation Finance: A Primer on the Gas Tax •

  17. Transportation Systems Engineering GRADUATE STUDIES

    E-Print Network [OSTI]

    Wang, Yuhang

    Transportation Systems Engineering GRADUATE STUDIES TRANSPORTATION SYSTEMS are the building blocks and provides for an improved quality of life. However, transportation systems by their very nature also affect the environment through physical construction and operation of transportation facilities, and through the travel

  18. Integrated transportation system design optimization

    E-Print Network [OSTI]

    Taylor, Christine P. (Christine Pia), 1979-

    2007-01-01T23:59:59.000Z

    Traditionally, the design of a transportation system has focused on either the vehicle design or the network flow, assuming the other as given. However, to define a system level architecture for a transportation system, ...

  19. Efficiency of Charge Transport in a Polypeptide Chain: The Isolated System Sheh-Yi Sheu, E. W. Schlag,*, Dah-Yen Yang, and H. L. Selzle

    E-Print Network [OSTI]

    Sheu, Sheh-Yi

    new single site molecular dynamics calculations to determine the time development of initialVersitaet Muenchen, Lichtenbergstrasse 4, D-85748 Garching, Germany, and Institute of Atomic and Molecular Science energization at an excitation site moving to a terminus. For this we find the efficiency of charge transport

  20. Integrated Transportation System Design Optimization

    E-Print Network [OSTI]

    Integrated Transportation System Design Optimization by Christine Taylor B.S. Cornell University by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Professor Jaime Peraire Chairman, Department Graduate Committee #12;2 #12;Integrated Transportation System Abstract Traditionally, the design of a transportation system has focused on either the vehicle design

  1. Transportation System Readiness and Resiliency Assessment Framework: Readiness and Assess Resiliency of

    E-Print Network [OSTI]

    Transportation System Readiness and Resiliency Assessment Framework: Readiness and Assess Resiliency of Transportation Systems (Infrastructure, Systems, Organization and Services) to Deter, Detect Flows Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle

  2. Graphene Produces More Efficient Charge Transport Inside an Organic

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

    Graphene Produces More Efficient Charge Transport Inside an Organic Semiconductor Graphene, a two dimensional semi-metal made of sp 2 hybridized carbon, is an outstanding material...

  3. Sustainable Transportation (Fact Sheet), Office of Energy Efficiency...

    Energy Savers [EERE]

    Energy, U.S. Department of Energy (DOE) This document highlights DOE's Office of Energy Efficiency and Renewable Energy's advancements in transportation technologies,...

  4. Graphene Produces More Efficient Charge Transport Inside an Organic...

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

    Graphene Produces More Efficient Charge Transport Inside an Organic Semiconductor Friday, January 30, 2015 Graphene, a two dimensional semi-metal made of sp2 hybridized carbon, is...

  5. Transportation System Concept of Operations

    SciTech Connect (OSTI)

    N. Slater-Thompson

    2006-08-16T23:59:59.000Z

    The Nuclear Waste Policy Act of 1982 (NWPA), as amended, authorized the DOE to develop and manage a Federal system for the disposal of SNF and HLW. OCRWM was created to manage acceptance and disposal of SNF and HLW in a manner that protects public health, safety, and the environment; enhances national and energy security; and merits public confidence. This responsibility includes managing the transportation of SNF and HLW from origin sites to the Repository for disposal. The Transportation System Concept of Operations is the core high-level OCRWM document written to describe the Transportation System integrated design and present the vision, mission, and goals for Transportation System operations. By defining the functions, processes, and critical interfaces of this system early in the system development phase, programmatic risks are minimized, system costs are contained, and system operations are better managed, safer, and more secure. This document also facilitates discussions and understanding among parties responsible for the design, development, and operation of the Transportation System. Such understanding is important for the timely development of system requirements and identification of system interfaces. Information provided in the Transportation System Concept of Operations includes: the functions and key components of the Transportation System; system component interactions; flows of information within the system; the general operating sequences; and the internal and external factors affecting transportation operations. The Transportation System Concept of Operations reflects OCRWM's overall waste management system policies and mission objectives, and as such provides a description of the preferred state of system operation. The description of general Transportation System operating functions in the Transportation System Concept of Operations is the first step in the OCRWM systems engineering process, establishing the starting point for the lower level descriptions. of subsystems and components, and the Transportation System Requirements Document. Other program and system documents, plans, instructions, and detailed designs will be consistent with and informed by the Transportation System Concept of Operations. The Transportation System Concept of Operations is a living document, enduring throughout the OCRWM systems engineering lifecycle. It will undergo formal approval and controlled revisions as appropriate while the Transportation System matures. Revisions will take into account new policy decisions, new information available through system modeling, engineering investigations, technical analyses and tests, and the introduction of new technologies that can demonstrably improve system performance.

  6. Optimal concentrations in transport systems

    E-Print Network [OSTI]

    Kim, Wonjung

    Many biological and man-made systems rely on transport systems for the distribution of material, for example matter and energy. Material transfer in these systems is determined by the flow rate and the concentration of ...

  7. Climatic influences on hillslope soil transport efficiency

    E-Print Network [OSTI]

    Schurr, Naomi D. (Naomi Danika)

    2014-01-01T23:59:59.000Z

    The soil transport coefficient D represents the relationship between local topographical gradient and soil flux in the landscape evolution model. This work presents new estimates of the soil transport coefficient D at 9 ...

  8. Transportation Energy Efficiency Trends, 1972--1992

    SciTech Connect (OSTI)

    Greene, D.L. [Oak Ridge National Lab., TN (United States); Fan, Y. [Oak Ridge Associated Universities, Inc., TN (United States)

    1994-12-01T23:59:59.000Z

    The US transportation sector, which remains 97% dependent on petroleum, used a record 22.8 quads of energy in 1993. Though growing much more slowly than the economy from 1975 to 1985, energy use for transportation is now growing at nearly the same rate as GDP. This report describes the analysis of trends in energy use and energy intensity in transportation into components due to, (1) growth in transportation activity, (2) changes in energy intensity, and (3) changes in the modal structure of transportation activities.

  9. Road Weather and Transportation Systems

    E-Print Network [OSTI]

    Bertini, Robert L.

    Road Weather and Transportation Systems Rhonda Young, P.E., PhD Associate Professor Dept. of Civil & Arch. Engineering Portland State University April 18, 2014 #12;Engineering Perspective of Road Weather · How does weather impact transportation systems? · As engineers, is there anything we can do

  10. Structure-dynamics relationship in coherent transport through disordered systems

    E-Print Network [OSTI]

    Stefano Mostarda; Federico Levi; Diego Prada-Gracia; Florian Mintert; Francesco Rao

    2013-07-17T23:59:59.000Z

    Quantum transport is strongly influenced by interference with phase relations that depend sensitively on the scattering medium. Since even small changes in the geometry of the medium can turn constructive interference to destructive, a clear relation between structure and fast, efficient transport is difficult to identify. Here we present a complex network analysis of quantum transport through disordered systems to elucidate the relationship between transport efficiency and structural organization. Evidence is provided for the emergence of structural classes with different geometries but similar high efficiency. Specifically, a structural motif characterised by pair sites which are not actively participating to the dynamics renders transport properties robust against perturbations. Our results pave the way for a systematic rationalization of the design principles behind highly efficient transport which is of paramount importance for technological applications as well as to address transport robustness in natural light harvesting complexes.

  11. On the Road to Transportation Efficiency (Video)

    SciTech Connect (OSTI)

    Not Available

    2014-03-01T23:59:59.000Z

    Reducing emissions and oil consumption are crucial worldwide goals. Reducing transportation emissions, in particular, is key to reducing overall emissions. Electric vehicles driving on electrified roadways could be a significant part of the solution. E-roadways offer a variety of benefits: reduce petroleum consumption (electricity is used instead of gasoline), decrease vehicular operating costs (from about 12 cents per mile to 4 cents per mile), and extend the operational range of electric vehicles. Plus, e-roadway power can come from renewable sources. This animation was sponsored by the Clean Transportation Sector Initiative, and interagency effort between the U.S. Department of Transportation and the U.S. Department of Energy.

  12. Contaminant Transport in Hydrogeologic Systems 

    E-Print Network [OSTI]

    Chin, C.; Redden, D. L.

    1981-01-01T23:59:59.000Z

    , the evaluation of dispersivity under field conditions is a costly and time consuming job. The process of transporting a specific conservative ion species in an aquifer is analogous to the transport of heat in the system. Because of this analogy, the original...

  13. Transportation, Aging and Disposal Canister System Performance...

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

    This document provides specifications for selected system components of the Transportation, Aging and Disposal (TAD) canister-based system. Transportation, Aging and Disposal...

  14. Not planning a sustainable transport system

    SciTech Connect (OSTI)

    Finnveden, Göran, E-mail: goran.finnveden@abe.kth.se; Åkerman, Jonas

    2014-04-01T23:59:59.000Z

    The overall objective of the Swedish transport policy is to ensure the economically efficient and sustainable provision of transport services for people and business throughout the country. More specifically, the transport sector shall, among other things, contribute to the achievement of environmental quality objectives in which the development of the transport system plays an important role in the achievement of the objectives. The aim of this study is to analyse if current transport planning supports this policy. This is done by analysing two recent cases: the National Infrastructure Plan 2010–2021, and the planning of Bypass Stockholm, a major road investment. Our results show that the plans are in conflict with several of the environmental quality objectives. Another interesting aspect of the planning processes is that the long-term climate goals are not included in the planning processes, neither as a clear goal nor as factor that will influence future transport systems. In this way, the long-term sustainability aspects are not present in the planning. We conclude that the two cases do not contribute to a sustainable transport system. Thus, several changes must be made in the processes, including putting up clear targets for emissions. Also, the methodology for the environmental assessments needs to be further developed and discussed. - Highlights: • Two cases are studied to analyse if current planning supports a sustainable transport system. • Results show that the plans are in conflict with several of the environmental quality objectives. • Long-term climate goals are not included in the planning processes. • Current practices do not contribute to a sustainable planning processes. • Methodology and process for environmental assessments must be further developed and discussed.

  15. Efficient Power System State Estimation

    E-Print Network [OSTI]

    Lavaei, Javad

    monitoring of power systems. 2. Background Power systems have four main components: transmission, sub-transmissionEfficient Power System State Estimation Zafirah Baksh Expected BS, Department of Electrical Engineering May 2013 ELEN E4511 Power Systems Analysis Professor Javad Lavaeiyanesi #12;1. Introduction Power

  16. On the Road to Transportation Efficiency

    SciTech Connect (OSTI)

    None

    2014-04-21T23:59:59.000Z

    Reducing emissions and oil consumption are crucial worldwide goals. Reducing transportation emissions, in particular, is key to reducing overall emissions. Electric vehicles driving on electrified roadways could be a significant part of the solution. E-roadways offer a variety of benefits: reduce petroleum consumption (electricity is used instead of gasoline), decrease vehicular operating costs (from about 12 cents per mile to 4 cents per mile), and extend the operational range of electric vehicles. Plus, e-roadway power can come from renewable sources.

  17. Transportation Efficiency Resources | Department of Energy

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23,EnergyChicopeeTechnologyfact sheetTransferring thefor AnalyzingTransportation

  18. Next Generation Hole Injection/Transport Nano-Composites for High Efficiency OLED Development

    SciTech Connect (OSTI)

    King Wang

    2009-07-31T23:59:59.000Z

    The objective of this program is to use a novel nano-composite material system for the OLED anode coating/hole transport layer. The novel anode coating is intended to significantly increase not only hole injection/transport efficiency, but the device energy efficiency as well. Another goal of the Core Technologies Program is the optimization and scale-up of air-stable and cross-linkable novel HTL nano-composite materials synthesis and the development of low-cost, large-scale mist deposition processes for polymer OLED fabrication. This proposed technology holds the promise to substantially improve OLED energy efficiency and lifetime.

  19. Pupillary efficient lighting system

    DOE Patents [OSTI]

    Berman, Samuel M. (San Francisco, CA); Jewett, Don L. (Mill Valley, CA)

    1991-01-01T23:59:59.000Z

    A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination.

  20. Essays on Transportation and Energy Efficiency Policy 

    E-Print Network [OSTI]

    West, Jeremy

    2014-07-16T23:59:59.000Z

    This dissertation examines two questions of consumers' motor vehicle purchase and utilization. Both are related to policy variation induced by the U.S. Car Allowance Rebate System, better known as "Cash for Clunkers." First, we directly investigate...

  1. Essays on Transportation and Energy Efficiency Policy

    E-Print Network [OSTI]

    West, Jeremy

    2014-07-16T23:59:59.000Z

    This dissertation examines two questions of consumers' motor vehicle purchase and utilization. Both are related to policy variation induced by the U.S. Car Allowance Rebate System, better known as "Cash for Clunkers." First, we directly investigate...

  2. Pion capture and transport system for PRISM

    E-Print Network [OSTI]

    McDonald, Kirk

    solenoid cold mass Transport pions+muons in long 2T solenoid channelPion capture and transport system for PRISM M. Yoshida Osaka Univ. 2005/8/28 NuFACT06 at UCI #12 and transport system proton beam Phase rotator PRIME detector #12;Concepts of pion capture/transport system

  3. WATER TRANSPORT IN VESSELLESS ANGIOSPERMS: CONDUCTING EFFICIENCY AND CAVITATION SAFETY

    E-Print Network [OSTI]

    Hacke, Uwe

    WATER TRANSPORT IN VESSELLESS ANGIOSPERMS: CONDUCTING EFFICIENCY AND CAVITATION SAFETY U. G. Hacke. Second, vesselless wood ought to be exceptionally safe from cavitation if the small cumulative area woods averaged a cavitation pressure of Ã?3:4 6 0:3 MPa, which is low for their wet habitats

  4. Efficient, automated Monte Carlo methods for radiation transport

    SciTech Connect (OSTI)

    Kong Rong; Ambrose, Martin [Claremont Graduate University, 150 E. 10th Street, Claremont, CA 91711 (United States); Spanier, Jerome [Claremont Graduate University, 150 E. 10th Street, Claremont, CA 91711 (United States); Beckman Laser Institute and Medical Clinic, University of California, 1002 Health Science Road E., Irvine, CA 92612 (United States)], E-mail: jspanier@uci.edu

    2008-11-20T23:59:59.000Z

    Monte Carlo simulations provide an indispensible model for solving radiative transport problems, but their slow convergence inhibits their use as an everyday computational tool. In this paper, we present two new ideas for accelerating the convergence of Monte Carlo algorithms based upon an efficient algorithm that couples simulations of forward and adjoint transport equations. Forward random walks are first processed in stages, each using a fixed sample size, and information from stage k is used to alter the sampling and weighting procedure in stage k+1. This produces rapid geometric convergence and accounts for dramatic gains in the efficiency of the forward computation. In case still greater accuracy is required in the forward solution, information from an adjoint simulation can be added to extend the geometric learning of the forward solution. The resulting new approach should find widespread use when fast, accurate simulations of the transport equation are needed.

  5. The efficient use of natural gas in transportation

    SciTech Connect (OSTI)

    Stodolsky, F.; Santini, D.J.

    1992-04-01T23:59:59.000Z

    Concerns over air quality and greenhouse gas emissions have prompted discussion as well as action on alternative fuels and energy efficiency. Natural gas and natural gas derived fuels and fuel additives are prime alternative fuel candidates for the transportation sector. In this study, we reexamine and add to past work on energy efficiency and greenhouse gas emissions of natural gas fuels for transportation (DeLuchi 1991, Santini et a. 1989, Ho and Renner 1990, Unnasch et al. 1989). We add to past work by looking at Methyl tertiary butyl ether (from natural gas and butane component of natural gas), alkylate (from natural gas butanes), and gasoline from natural gas. We also reexamine compressed natural gas, liquified natural gas, liquified petroleum gas, and methanol based on our analysis of vehicle efficiency potential. We compare the results against nonoxygenated gasoline.

  6. The efficient use of natural gas in transportation

    SciTech Connect (OSTI)

    Stodolsky, F.; Santini, D.J.

    1992-01-01T23:59:59.000Z

    Concerns over air quality and greenhouse gas emissions have prompted discussion as well as action on alternative fuels and energy efficiency. Natural gas and natural gas derived fuels and fuel additives are prime alternative fuel candidates for the transportation sector. In this study, we reexamine and add to past work on energy efficiency and greenhouse gas emissions of natural gas fuels for transportation (DeLuchi 1991, Santini et a. 1989, Ho and Renner 1990, Unnasch et al. 1989). We add to past work by looking at Methyl tertiary butyl ether (from natural gas and butane component of natural gas), alkylate (from natural gas butanes), and gasoline from natural gas. We also reexamine compressed natural gas, liquified natural gas, liquified petroleum gas, and methanol based on our analysis of vehicle efficiency potential. We compare the results against nonoxygenated gasoline.

  7. Information efficiency in hyperspectral imaging systems

    E-Print Network [OSTI]

    Reichenbach, Stephen E.

    Information efficiency in hyperspectral imaging systems Stephen E. Reichenbach University develop a method for assessing the in- formation density and efficiency of hyperspectral imaging systems width can efficiently gather information about a scene by allocating bandwidth among the bands according

  8. Highly Efficient Electric Motor Systems

    E-Print Network [OSTI]

    over wider operating range with same size motor Uses up to 40% less electricity NREL Energy Forum;Annual Serviceable Addressable Market (SAM) for >1hp non-hermetic motors NREL Energy Forum November 2009Highly Efficient Electric Motor Systems NREL Energy Forum November 2009 www.novatorque.com Emily

  9. Fast and efficient transport of large ion clouds

    E-Print Network [OSTI]

    Kamsap, Marius Romuald; Champenois, Caroline; Guyomarc'H, Didier; Houssin, Marie; Knoop, Martina

    2015-01-01T23:59:59.000Z

    The manipulation of trapped charged particles by electric fields is an accurate, robust and reliable technique for many applications or experiments in high-precision spectroscopy. The transfer of the ion sample between multiple traps allows the use of a tailored environment in quantum information, cold chemistry, or frequency metrology experiments. In this article, we experimentally study the transport of ion clouds of up to 50 000 ions. The design of the trap makes ions very sensitive to any mismatch between the assumed electric potential and the actual local one. Nevertheless, we show that being fast (100 $\\mu$s to transfer over more than 20 mm) increases the transport efficiency to values higher than 90 %, even with a large number of ions. For clouds of less than 2000 ions, a 100 % transfer efficiency is observed.

  10. Management and Safety of Transportation Systems

    E-Print Network [OSTI]

    Carver, Jeffrey C.

    Management and Safety of Transportation Systems University Transportation Center for Alabama A N N@eng.ua.edu www.eng.ua.edu Editors: James Cruise, Ph.D. Barbara Moore University Transportation Center for Alabama Transportation Center for Alabama (UTCA). The contents of this Annual Report reflect the views of the editors

  11. Screw pumps provide high efficiency in transport of Orinoco bitumen

    SciTech Connect (OSTI)

    Brennan, J.R. [IMO Industries, Inc., Monroe, NC (United States)

    1995-03-01T23:59:59.000Z

    One of the world`s largest known deposits of extra natural bitumen is located in the Orinoco River basin of eastern Venezuela. Production and transportation of an emulsion of bitumen and water is one of the major projects being directed by Petroleos de Venezuela S.A. This paper reviews the pump selection options considered in transporting this bitumen to a viable processing facility. The three pump types evaluated were centrifugal, reciprocating, or rotary screw. Performance and cost parameters are evaluated and the screw pump was determined to be the most economical, high performance choice. The paper goes on to describe the installation of the main transport lines and efficiency of these new pumps.

  12. Automated Transportation Management System (ATMS) | Department...

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

    of Energy's (DOE's) Automated Transportation Management System is an integrated web-based logistics management system allowing users to manage inbound and outbound freight...

  13. Radioisotope thermoelectric generator transport trailer system

    SciTech Connect (OSTI)

    Ard, K.E.; King, D.A.; Leigh, H.; Satoh, J.A. [Westinghouse Hanford Company, P.O. Box 1970, MSIN N1-25, Richland, Washington 99352 (United States)

    1995-01-20T23:59:59.000Z

    The Radioisotope Thermoelectric Generator (RTG) Transportation System, designated as System 100, comprises four major systems. The four major systems are designated as the Packaging System (System 120), Trailer System (System 140), Operations and Ancillary Equipment System (System 160), and Shipping and Receiving Facility Transport System (System 180). Packaging System (System 120), including the RTG packaging is licensed (regulatory) hardware; it is certified by the U.S. Department of Energy to be in accordance with Title 10, {ital Code} {ital of} {ital Federal} {ital Regulations}, Part 71 (10 CFR 71). System 140, System 160, and System 180 are nonlicensed (nonregulatory) hardware. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}

  14. What are Intelligent Transportation Intelligent Transportation Systems (ITS) are

    E-Print Network [OSTI]

    Bertini, Robert L.

    at--and solving--our transportation problems. The strategy of adding more and more highway capacity productivity, and wasted energy. ITS enables people and goods to move more safely and efficiently through region, the state of Oregon and throughout the nation. We partner with local, regional, national

  15. Sustainable Transportation: Accelerating Widespread Adoption of Energy Efficient Vehicles & Fuels (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2014-12-01T23:59:59.000Z

    While energy efficient transportation strategies have the potential to simultaneously slash oil consumption and reduce greenhouse gas (GHG) emissions, a truly sustainable solution will require more than just putting drivers behind the wheels of new fuel-efficient cars. As the only national laboratory dedicated 100% to renewable energy and energy efficiency, the National Renewable Energy Laboratory (NREL) accelerates widespread adoption of high-performance, low-emission, energy-efficient passenger and freight vehicles, as well as alternative fuels and related infrastructure. Researchers collaborate closely with industry, government, and research partners, using a whole-systems approach to design better batteries, drivetrains, and engines, as well as thermal management, energy storage, power electronic, climate control, alternative fuel, combustion, and emission systems. NREL's sustainable transportation research, development, and deployment (RD&D) efforts are not limited to vehicles, roads, and fueling stations. The lab also explores ways to save energy and reduce GHGs by integrating transportation technology advancements with renewable energy generation, power grids and building systems, urban planning and policy, and fleet operations.

  16. Phase stable RF transport system

    DOE Patents [OSTI]

    Curtin, Michael T. (Los Alamos, NM); Natter, Eckard F. (San Francisco, CA); Denney, Peter M. (Los Alamos, NM)

    1992-01-01T23:59:59.000Z

    An RF transport system delivers a phase-stable RF signal to a load, such as an RF cavity of a charged particle accelerator. A circuit generates a calibration signal at an odd multiple frequency of the RF signal where the calibration signal is superimposed with the RF signal on a common cable that connects the RF signal with the load. Signal isolating diplexers are located at both the RF signal source end and load end of the common cable to enable the calibration to be inserted and extracted from the cable signals without any affect on the RF signal. Any phase shift in the calibration signal during traverse of the common cable is then functionally related to the phase shift in the RF signal. The calibration phase shift is used to control a phase shifter for the RF signal to maintain a stable RF signal at the load.

  17. Renewable and Efficient Electric Power Systems

    E-Print Network [OSTI]

    Kammen, Daniel M.

    Renewable and Efficient Electric Power Systems Gilbert M. Masters Stanford University A JOHN WILEY & SONS, INC., PUBLICATION #12;#12;Renewable and Efficient Electric Power Systems #12;#12;Renewable and Efficient Electric Power Systems Gilbert M. Masters Stanford University A JOHN WILEY & SONS, INC

  18. Energy Efficient Nanoelectronic System Design

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    ://www.newairplane.com One 787 Battery: 12 Cells / 32 V DC 05/21/2013 6 #12;Why Energy Efficient Design ? Environmental energy-efficient designs. How to perform high-yield, energy efficient designs. How to perform effortless, high-yield, energy efficient designs. Gate Gate Gate Source D rain Graphene Layer 05/21/2013 14

  19. Road Transportable Analytical Laboratory system. Phase 1

    SciTech Connect (OSTI)

    Finger, S.M.; Keith, V.F.; Spertzel, R.O.; De Avila, J.C.; O`Donnell, M.; Vann, R.L.

    1993-09-01T23:59:59.000Z

    This developmental effort clearly shows that a Road Transportable Analytical Laboratory System is a worthwhile and achievable goal. The RTAL is designed to fully analyze (radioanalytes, and organic and inorganic chemical analytes) 20 samples per day at the highest levels of quality assurance and quality control. It dramatically reduces the turnaround time for environmental sample analysis from 45 days (at a central commercial laboratory) to 1 day. At the same time each RTAL system will save the DOE over $12 million per year in sample analysis costs compared to the costs at a central commercial laboratory. If RTAL systems were used at the eight largest DOE facilities (at Hanford, Savannah River, Fernald, Oak Ridge, Idaho, Rocky Flats, Los Alamos, and the Nevada Test Site), the annual savings would be $96,589,000. The DOE`s internal study of sample analysis needs projects 130,000 environmental samples requiring analysis in FY 1994, clearly supporting the need for the RTAL system. The cost and time savings achievable with the RTAL system will accelerate and improve the efficiency of cleanup and remediation operations throughout the DOE complex.

  20. Advanced Energy Efficient Roof System

    SciTech Connect (OSTI)

    Jane Davidson

    2008-09-30T23:59:59.000Z

    Energy consumption in buildings represents 40 percent of primary U.S. energy consumption, split almost equally between residential (22%) and commercial (18%) buildings.1 Space heating (31%) and cooling (12%) account for approximately 9 quadrillion Btu. Improvements in the building envelope can have a significant impact on reducing energy consumption. Thermal losses (or gains) from the roof make up 14 percent of the building component energy load. Infiltration through the building envelope, including the roof, accounts for an additional 28 percent of the heating loads and 16 percent of the cooling loads. These figures provide a strong incentive to develop and implement more energy efficient roof systems. The roof is perhaps the most challenging component of the building envelope to change for many reasons. The engineered roof truss, which has been around since 1956, is relatively low cost and is the industry standard. The roof has multiple functions. A typical wood frame home lasts a long time. Building codes vary across the country. Customer and trade acceptance of new building products and materials may impede market penetration. The energy savings of a new roof system must be balanced with other requirements such as first and life-cycle costs, durability, appearance, and ease of construction. Conventional residential roof construction utilizes closely spaced roof trusses supporting a layer of sheathing and roofing materials. Gypsum board is typically attached to the lower chord of the trusses forming the finished ceiling for the occupied space. Often in warmer climates, the HVAC system and ducts are placed in the unconditioned and otherwise unusable attic. High temperature differentials and leaky ducts result in thermal losses. Penetrations through the ceilings are notoriously difficult to seal and lead to moisture and air infiltration. These issues all contribute to greater energy use and have led builders to consider construction of a conditioned attic. The options considered to date are not ideal. One approach is to insulate between the trusses at the roof plane. The construction process is time consuming and costs more than conventional attic construction. Moreover, the problems of air infiltration and thermal bridges across the insulation remain. Another approach is to use structurally insulated panels (SIPs), but conventional SIPs are unlikely to be the ultimate solution because an additional underlying support structure is required except for short spans. In addition, wood spline and metal locking joints can result in thermal bridges and gaps in the foam. This study undertook a more innovative approach to roof construction. The goal was to design and evaluate a modular energy efficient panelized roof system with the following attributes: (1) a conditioned and clear attic space for HVAC equipment and additional finished area in the attic; (2) manufactured panels that provide structure, insulation, and accommodate a variety of roofing materials; (3) panels that require support only at the ends; (4) optimal energy performance by minimizing thermal bridging and air infiltration; (5) minimal risk of moisture problems; (6) minimum 50-year life; (7) applicable to a range of house styles, climates and conditions; (8) easy erection in the field; (9) the option to incorporate factory-installed solar systems into the panel; and (10) lowest possible cost. A nationwide market study shows there is a defined market opportunity for such a panelized roof system with production and semi-custom builders in the United States. Senior personnel at top builders expressed interest in the performance attributes and indicate long-term opportunity exists if the system can deliver a clear value proposition. Specifically, builders are interested in (1) reducing construction cycle time (cost) and (2) offering increased energy efficiency to the homebuyer. Additional living space under the roof panels is another low-cost asset identified as part of the study. The market potential is enhanced through construction activity levels in target marke

  1. ERTP: Energy-Efficient and Reliable Transport Protocol for Data Streaming in Wireless Sensor

    E-Print Network [OSTI]

    New South Wales, University of

    ERTP: Energy-Efficient and Reliable Transport Protocol for Data Streaming in Wireless Sensor applications in Wireless Sensor Networks require re- liable and energy-efficient transport protocols [17] [18 of minutes or hours), energy-efficiency is. Long-term operation and reliable delivery of the sensed data

  2. Intelligent Transportation Systems: Saving Lives, Time and Money Kristin Tufte

    E-Print Network [OSTI]

    Bertini, Robert L.

    Intelligent Transportation Systems: Saving Lives, Time and Money Kristin Tufte Portland State University Oregon Transportation Summit Sept 10, 2010 #12;Intelligent Transportation Systems: Saving Lives, Time and Money Official transportation data archive for the Portland-Vancouver metropolitan region

  3. Transport control in deterministic ratchet system

    E-Print Network [OSTI]

    Woo-Sik Son; Jung-Wan Ryu; Dong-Uk Hwang; Soo-Young Lee; Young-Jai Park; Chil-Min Kim

    2006-12-17T23:59:59.000Z

    We study the control of transport properties in a deterministic inertia ratchet system via the extended delay feedback method. A chaotic current of a deterministic inertia ratchet system is controlled to a regular current by stabilizing unstable periodic orbits embedded in a chaotic attractor of the unperturbed system. By selecting an unstable periodic orbit, which has a desired transport property, and stabilizing it via the extended delay feedback method, we can control transport properties of the deterministic inertia ratchet system. Also, we show that the extended delay feedback method can be utilized for separation of particles in the deterministic inertia ratchet system as a particle's initial condition varies.

  4. CREATING A BALANCED TRANSPORTATION SYSTEM

    E-Print Network [OSTI]

    Bertini, Robert L.

    think we need to make people aware that our traffic concepts of today are not sustainable) Orange .Transport . Architecture .Water management . #12;5 The Netherlands (as it is) Orange .Transport . Architecture .Water management . #12;6 United States Oregon Portland The Netherlands Utrecht Founded 1776 1859

  5. Computationally efficient description of relativistic electron beam transport in collisionless plasma

    E-Print Network [OSTI]

    Kaganovich, Igor

    Computationally efficient description of relativistic electron beam transport in collisionless and relativistic electron beam transport in collisionless background plasma is developed. Beam electrons of the Weibel instability are derived for the cold and finite-temperature beams. © 2007 American Institute

  6. Improving pumping system efficiency at coal plants

    SciTech Connect (OSTI)

    Livoti, W.C.; McCandless, S.; Poltorak, R. [Baldor Electric Co. (United States)

    2009-03-15T23:59:59.000Z

    The industry must employ ultramodern technologies when building or upgrading power plant pumping systems thereby using fuels more efficiently. The article discusses the uses and efficiencies of positive displacement pumps, centrifugal pumps and multiple screw pumps. 1 ref., 4 figs.

  7. Particle transport in low-energy ventilation systems. Part 2: Transients and experiments

    E-Print Network [OSTI]

    Bolster, Diogo

    Particle transport in low-energy ventilation systems. Part 2: Transients and experiments- sumption is a must for efficient ventilation system design. In this work, we study the transport ventilated by low energy displacement-ventilation systems. With these results and the knowledge of typical

  8. Challenges in Intelligent Transportation Systems

    E-Print Network [OSTI]

    Gesbert, David

    -EURECOM Workshop #12;The Vision: Intelligent Vehicle / Transport Motocycle Warning Emergency Vehicle [Source: BMW F with dielectric housing Fig. 3: Dielectric housing Source: Oliver Klemp (Oliver.Klemp@bmw.de), BMW R&D, Munich

  9. Alternative Fuels Data Center: Transportation System Efficiency

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMForms About BecomeTechnologies |HydrogenPublicationsStateTools

  10. Webinar: Highly Efficient Solar Thermochemical Reaction Systems

    Broader source: Energy.gov [DOE]

    Video recording and text version of the Fuel Cell Technologies Office webinar titled "Highly Efficient Solar Thermochemical Reaction Systems," originally presented on January 13, 2015.

  11. Intelligent Transportation Systems Deployment Statistics Database

    E-Print Network [OSTI]

    Intelligent Transportation Systems Deployment Statistics Database Oak Ridge National Laboratory direction. In addition, through the ITS Deployment Tracking web site, the database supports other users in 2010. Users can also download the entire 2010 deployment tracking database through the website

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

    Open Energy Info (EERE)

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

  13. UNIVERSITY of NEW HAMPSHIRE Evolving Sustainable Transportation Systems

    E-Print Network [OSTI]

    Rhode Island, University of

    Transportation Systems After heat and electricity, UNH fleet fuel consumption (direct) and personal commuting with a series of institutional practices, data collection, transportation system choices, demonstration of new

  14. Design Drivers of Energy-Efficient Transport Aircraft

    E-Print Network [OSTI]

    Drela, Mark

    The fuel energy consumption of subsonic air transportation is examined. The focus is on identification and quantification of fundamental engineering design tradeoffs which drive the design of subsonic tube and wing transport ...

  15. IBM and Energy Efficiency: Energy Managemnt Systems

    E-Print Network [OSTI]

    Veilleux, Y.

    2013-01-01T23:59:59.000Z

    IBM and Energy Efficiency Energy management systems IBM has a long standing commitment for the Environment and energy efficiency. An environmental policy has been in place for over 40 years and the corporation is certified to both the ISO... 14001 and ISO 50001 standards. The outcome of these commitments has been outstanding results in various spheres of activity related to environmental management and energy efficiency. At the root of our success is the corporate commitment to Energy...

  16. Hidden symmetries enhance quantum transport in Light Harvesting systems

    E-Print Network [OSTI]

    Tobias Zech; Roberto Mulet; Thomas Wellens; Andreas Buchleitner

    2012-05-23T23:59:59.000Z

    For more than 50 years we have known that photosynthetic systems harvest solar energy with almost unit {\\it quantum efficiency}. However, recent experimental evidence of {\\it quantum coherence} during the excitonic energy transport in photosynthetic organisms challenges our understanding of this fundamental biological function. Currently, and despite numerous efforts, the causal connection between coherence and efficiency is still a matter of debate. We show, through the study of extensive simulations of quantum coherent transport on networks, that three dimensional structures characterized by centro-symmetric Hamiltonians are statistically more efficient than random arrangements. Moreover, we demonstrate that the experimental data available for the electronic Hamiltonians of the Fenna-Mathew-Olson (FMO) complex of sulfur bacteria and of the crypophyte PC645 complex of marine algae are consistent with this strong correlation of centro-symmetry with quantum efficiency. These results show that what appears to be geometrically disordered complexes may well exhibit a hidden symmetry which enhances the energy transport between chromophores. We are confident that our results will motivate research to explore the properties of nearly centro-symmetric Hamiltonians in more realistic environments, and to unveil the role of symmetries for quantum effects in biology. The unravelling of such symmetries may open novel perspectives and suggest new design principles in the development of artificial devices.

  17. Alternative battery systems for transportation uses

    ScienceCinema (OSTI)

    Michael Thackeray

    2013-06-05T23:59:59.000Z

    Argonne Distinguished Fellow Michael Thackeray highlights the need for alternative battery systems for transportation uses. Such systems will not only need to be smaller, lighter and more energy dense, but also able to make electric vehicles more competitive with internal combustion engine vehicles.

  18. Alternative battery systems for transportation uses

    SciTech Connect (OSTI)

    Michael Thackeray

    2012-07-25T23:59:59.000Z

    Argonne Distinguished Fellow Michael Thackeray highlights the need for alternative battery systems for transportation uses. Such systems will not only need to be smaller, lighter and more energy dense, but also able to make electric vehicles more competitive with internal combustion engine vehicles.

  19. The efficiency of mitochondrial electron transport chain is increased in the long-lived mrg19

    E-Print Network [OSTI]

    Babu, M. Madan

    The efficiency of mitochondrial electron transport chain is increased in the long-lived mrg19 mtROS and contribute to longevity. This increased mitochondrial efficiency (i.e. low mtROS generated the observed higher mito- chondrial efficiency in the long-lived mrg19 mutant of Saccharomyces cerevisiae

  20. Transportation Planning & Decision Science Group Transportation Systems Research Group Diane Davidson Keith Kahl

    E-Print Network [OSTI]

    Transportation Planning & Decision Science Group Transportation Systems Research Group Diane Davidson Keith Kahl 865-946-1475 865-946-1236 Center for Transportation Analysis News Oak Ridge National to members of the Kentucky Transportation Cabinet and the Kentucky Transportation Center. The purpose

  1. Energy efficient operating systems and software

    E-Print Network [OSTI]

    Sinha, Amit, 1976-

    2001-01-01T23:59:59.000Z

    Energy efficient system design is becoming increasingly important with the proliferation of portable, battery-operated appliances such as laptops, Personal Digital Assistants (PDAs) and cellular phones. Numerous dedicated ...

  2. Highly Efficient Solar Thermochemical Reaction Systems

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

    Highly Efficient, Solar Thermochemical Reaction Systems (2014 R&D 100 Award Winner) U.S. Department of Energy Fuel Cell Technologies Office 2 Question and Answer * Please type your...

  3. Webinar: Highly Efficient Solar Thermochemical Reaction Systems

    Broader source: Energy.gov [DOE]

    The Fuel Cell Technologies Office will present a live webinar titled "Highly Efficient Solar Thermochemical Reaction Systems" on Tuesday, January 13, from 12:00 to 1:00 p.m. Eastern Standard Time.

  4. Transportation Sector Model of the National Energy Modeling System. Volume 2 -- Appendices: Part 1

    SciTech Connect (OSTI)

    NONE

    1998-01-01T23:59:59.000Z

    This volume contains input data and parameters used in the model of the transportation sector of the National Energy Modeling System. The list of Transportation Sector Model variables includes parameters for the following: Light duty vehicle modules (fuel economy, regional sales, alternative fuel vehicles); Light duty vehicle stock modules; Light duty vehicle fleet module; Air travel module (demand model and fleet efficiency model); Freight transport module; Miscellaneous energy demand module; and Transportation emissions module. Also included in these appendices are: Light duty vehicle market classes; Maximum light duty vehicle market penetration parameters; Aircraft fleet efficiency model adjustment factors; and List of expected aircraft technology improvements.

  5. EVermont Renewable Hydrogen Production and Transportation Fueling System

    SciTech Connect (OSTI)

    Garabedian, Harold T.

    2008-03-30T23:59:59.000Z

    A great deal of research funding is being devoted to the use of hydrogen for transportation fuel, particularly in the development of fuel cell vehicles. When this research bears fruit in the form of consumer-ready vehicles, will the fueling infrastructure be ready? Will the required fueling systems work in cold climates as well as they do in warm areas? Will we be sure that production of hydrogen as the energy carrier of choice for our transit system is the most energy efficient and environmentally friendly option? Will consumers understand this fuel and how to handle it? Those are questions addressed by the EVermont Wind to Wheels Hydrogen Project: Sustainable Transportation. The hydrogen fueling infrastructure consists of three primary subcomponents: a hydrogen generator (electrolyzer), a compression and storage system, and a dispenser. The generated fuel is then used to provide transportation as a motor fuel. EVermont Inc., started in 1993 by then governor Howard Dean, is a public-private partnership of entities interested in documenting and advancing the performance of advanced technology vehicles that are sustainable and less burdensome on the environment, especially in areas of cold climates, hilly terrain and with rural settlement patterns. EVermont has developed a demonstration wind powered hydrogen fuel producing filling system that uses electrolysis, compression to 5000 psi and a hydrogen burning vehicle that functions reliably in cold climates. And that fuel is then used to meet transportation needs in a hybrid electric vehicle whose internal combustion engine has been converted to operate on hydrogen Sponsored by the DOE EERE Hydrogen, Fuel Cells & Infrastructure Technologies (HFC&IT) Program, the purpose of the project is to test the viability of sustainably produced hydrogen for use as a transportation fuel in a cold climate with hilly terrain and rural settlement patterns. Specifically, the project addresses the challenge of building a renewable transportation energy capable system. The prime energy for this project comes from an agreement with a wind turbine operator.

  6. Vapor-phase heat-transport system

    SciTech Connect (OSTI)

    Hedstrom, J.C.

    1983-01-01T23:59:59.000Z

    A vapor-phase heat-transport system is being tested in one of the passive test cells at Los Alamos. The system consists of one selective-surface collector and a condenser inside a water storage tank. The refrigerant, R-11, can be returned to the collector by gravity or with a pump. Results from several operating configurations are presented, together with a comparison with other passive systems. A new self-pumping concept is presented.

  7. Energy efficiency improvements in Chinese compressed air systems

    E-Print Network [OSTI]

    McKane, Aimee; Li, Li; Li, Yuqi; Taranto, T.

    2008-01-01T23:59:59.000Z

    Air Systems, Paper #071 Energy efficiency improvements into increase industrial energy efficiency. As a result, morein use. Over time, energy efficiency decreases and the cost

  8. Hydrogen-fueled polymer electrolyte fuel cell systems for transportation.

    SciTech Connect (OSTI)

    Ahluwalia, R.; Doss, E.D.; Kumar, R.

    1998-10-19T23:59:59.000Z

    The performance of a polymer electrolyte fuel cell (PEFC) system that is fueled directly by hydrogen has been evaluated for transportation vehicles. The performance was simulated using a systems analysis code and a vehicle analysis code. The results indicate that, at the design point for a 50-kW PEFC system, the system efficiency is above 50%. The efficiency improves at partial load and approaches 60% at 40% load, as the fuel cell operating point moves to lower current densities on the voltage-current characteristic curve. At much lower loads, the system efficiency drops because of the deterioration in the performance of the compressor, expander, and, eventually, the fuel cell. The results also indicate that the PEFC system can start rapidly from ambient temperatures. Depending on the specific weight of the fuel cell (1.6 kg/kW in this case), the system takes up to 180s to reach its design operating conditions. The PEFC system has been evaluated for three mid-size vehicles: the 1995 Chrysler Sedan, the near-term Ford AIV (Aluminum Intensive Vehicle) Sable, and the future P2000 vehicle. The results show that the PEFC system can meet the demands of the Federal Urban Driving Schedule and the Highway driving cycles, for both warm and cold start-up conditions. The results also indicate that the P2000 vehicle can meet the fuel economy goal of 80 miles per gallon of gasoline (equivalent).

  9. Transportation Services Fueling Operation Transportation Services has installed a software system that will facilitate fueling of

    E-Print Network [OSTI]

    Transportation Services Fueling Operation Transportation Services has installed a software system into this system. All University vehicles that wish to fuel at UH M noa Transportation Services will be required the application below and submit your application to Transportation Services before attempting to fuel your

  10. Ion transport membrane module and vessel system

    DOE Patents [OSTI]

    Stein, VanEric Edward (Allentown, PA); Carolan, Michael Francis (Allentown, PA); Chen, Christopher M. (Allentown, PA); Armstrong, Phillip Andrew (Orefield, PA); Wahle, Harold W. (North Canton, OH); Ohrn, Theodore R. (Alliance, OH); Kneidel, Kurt E. (Alliance, OH); Rackers, Keith Gerard (Louisville, OH); Blake, James Erik (Uniontown, OH); Nataraj, Shankar (Allentown, PA); van Doorn, Rene Hendrik Elias (Obersulm-Willsbach, DE); Wilson, Merrill Anderson (West Jordan, UT)

    2008-02-26T23:59:59.000Z

    An ion transport membrane system comprising (a) a pressure vessel having an interior, an exterior, an inlet, and an outlet; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein any inlet and any outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; and (c) one or more gas manifolds in flow communication with interior regions of the membrane modules and with the exterior of the pressure vessel.The ion transport membrane system may be utilized in a gas separation device to recover oxygen from an oxygen-containing gas or as an oxidation reactor to oxidize compounds in a feed gas stream by oxygen permeated through the mixed metal oxide ceramic material of the membrane modules.

  11. Ion transport membrane module and vessel system

    DOE Patents [OSTI]

    Stein, VanEric Edward (Allentown, PA); Carolan, Michael Francis (Allentown, PA); Chen, Christopher M. (Allentown, PA); Armstrong, Phillip Andrew (Orefield, PA); Wahle, Harold W. (North Canton, OH); Ohrn, Theodore R. (Alliance, OH); Kneidel, Kurt E. (Alliance, OH); Rackers, Keith Gerard (Louisville, OH); Blake, James Erik (Uniontown, OH); Nataraj, Shankar (Allentown, PA); Van Doorn, Rene Hendrik Elias (Obersulm-Willsbach, DE); Wilson, Merrill Anderson (West Jordan, UT)

    2012-02-14T23:59:59.000Z

    An ion transport membrane system comprising (a) a pressure vessel having an interior, an exterior, an inlet, and an outlet; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein any inlet and any outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; and (c) one or more gas manifolds in flow communication with interior regions of the membrane modules and with the exterior of the pressure vessel. The ion transport membrane system may be utilized in a gas separation device to recover oxygen from an oxygen-containing gas or as an oxidation reactor to oxidize compounds in a feed gas stream by oxygen permeated through the mixed metal oxide ceramic material of the membrane modules.

  12. Transport of metal salts by zwitterionic ligands; simple but highly efficient salicylaldoxime extractants 

    E-Print Network [OSTI]

    Parsons, S.; Tasker, Peter; White, Fraser J; Henderson, D.K.; Galbraith, S.G.; Davidson, J.E.; Forgan, Ross Stewart

    2008-09-01T23:59:59.000Z

    Attaching dialkylaminomethyl arms to commercial phenolic oxime copper extractants yields reagents which transport base metal salts very efficiently by forming neutral 1 : 1 or 1 : 2 complexes with zwitterionic forms of the ligands....

  13. Computational methods for efficient nuclear data management in Monte Carlo neutron transport simulations

    E-Print Network [OSTI]

    Walsh, Jonathan A. (Jonathan Alan)

    2014-01-01T23:59:59.000Z

    This thesis presents the development and analysis of computational methods for efficiently accessing and utilizing nuclear data in Monte Carlo neutron transport code simulations. Using the OpenMC code, profiling studies ...

  14. Basic Research Needs for Clean and Efficient Combustion of 21st Century Transportation Fuels

    SciTech Connect (OSTI)

    McIlroy, A.; McRae, G.; Sick, V.; Siebers, D. L.; Westbrook, C. K.; Smith, P. J.; Taatjes, C.; Trouve, A.; Wagner, A. F.; Rohlfing, E.; Manley, D.; Tully, F.; Hilderbrandt, R.; Green, W.; Marceau, D.; O'Neal, J.; Lyday, M.; Cebulski, F.; Garcia, T. R.; Strong, D.

    2006-11-01T23:59:59.000Z

    To identify basic research needs and opportunities underlying utilization of evolving transportation fuels, with a focus on new or emerging science challenges that have the potential for significant long-term impact on fuel efficiency and emissions.

  15. Pump Systems Optimization: Energy Efficiency

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 |ofDepartment ofPart| Department ofPump Systems

  16. Contaminant Transport in Municipal Water Systems

    E-Print Network [OSTI]

    Stockie, John

    Chapter 1 Contaminant Transport in Municipal Water Systems Presented at the 3rd PIMS Industrial the inverse problem. We begin in the following sections with an overview of the physics of ow in water forcing to raise the hydraulic head of the water in the network. The nodes are either junctions, tanks

  17. PHYSICAL REVIEW E 86, 041144 (2012) Efficiency at maximum power for classical particle transport

    E-Print Network [OSTI]

    Lindenberg, Katja

    2012-01-01T23:59:59.000Z

    PHYSICAL REVIEW E 86, 041144 (2012) Efficiency at maximum power for classical particle transport transport. DOI: 10.1103/PhysRevE.86.041144 PACS number(s): 05.70.Ln, 05.40.-a, 05.20.-y I. INTRODUCTION Over, operating between a hot and cold bath at temperatures T (1) and T (2) , respectively, possesses universal

  18. Efficient Management of Idleness in Storage Systems

    E-Print Network [OSTI]

    Smirni, Evgenia

    -off between the performance of fore- ground and background tasks. As a result, the storage system is better4 Efficient Management of Idleness in Storage Systems NINGFANG MI College of William and Mary ALMA of storage sys- tems are scheduled with low priority and served during idle times. Under such conditions

  19. Irrigation Retrofit Program Improving sprinkler system efficiency

    E-Print Network [OSTI]

    Jawitz, James W.

    Irrigation Retrofit Program Improving sprinkler system efficiency Approximately 70% of the homes of irrigation system retrofits that qualify for rebates Contact the Extension Service. MiamiDade County in MiamiDade County have h i l i i i i d i d i l ( h l f )mechanical irrigation timers and indexing valves

  20. Energy-Efficient Mobile Data Transport via Online Multi-Network Packet Aaron Cote, Adam Meyerson, Brian Tagiku

    E-Print Network [OSTI]

    Meyerson, Adam W.

    Energy-Efficient Mobile Data Transport via Online Multi-Network Packet Scheduling Aaron Cot´e, Adam related to energy-efficiency in mobile data transport. This model incorporates multiple networks with non energy-efficiency, our model requires that packets have larger values for more energy- efficient networks

  1. Assuring safety through operational approval : challenges in assessing and approving the safety of systems-level changes in air transportation

    E-Print Network [OSTI]

    Weibel, Roland E. (Roland Everett)

    2010-01-01T23:59:59.000Z

    To improve capacity and efficiency of the air transportation system, a number of new systems-level changes have been proposed. Key aspects of the proposed changes are combined functionality across technology and procedures ...

  2. A Transportation Network EfficiencyA Transportation Network Efficiency Measure that Captures Flows,Measure that Captures Flows,

    E-Print Network [OSTI]

    Nagurney, Anna

    Guire, and Winsten (1956), that electric power generation and distribution networks can be reformulated and solved of Electric Power Supply Chain NetworksPower Supply Chain Networks Electric Power Supply Transportation Chain Component Importanceto Network Component Importance Identification and Vulnerability

  3. Liners for ion transport membrane systems

    DOE Patents [OSTI]

    Carolan, Michael Francis (Allentown, PA); Miller, Christopher Francis (Macungie, PA)

    2010-08-10T23:59:59.000Z

    Ion transport membrane system comprising (a) a pressure vessel comprising an interior, an exterior, an inlet, an inlet conduit, an outlet, and an outlet conduit; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region, wherein the inlet and the outlet of the pressure vessel are in flow communication with exterior regions of the membrane modules; (c) a gas manifold having an interior surface wherein the gas manifold is in flow communication with the interior region of each of the planar ion transport membrane modules and with the exterior of the pressure vessel; and (d) a liner disposed within any of the inlet conduit, the outlet conduit, and the interior surface of the gas manifold.

  4. Advanced, Energy-Efficient Hybrid Membrane System for Industrial...

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

    Advanced, Energy-Efficient Hybrid Membrane System for Industrial Water Reuse Advanced, Energy-Efficient Hybrid Membrane System for Industrial Water Reuse hybridmembranesystemsfa...

  5. Improving efficiency of a vehicle HVAC system with comfort modeling...

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

    efficiency of a vehicle HVAC system with comfort modeling, zonal design, and thermoelectric devices Improving efficiency of a vehicle HVAC system with comfort modeling, zonal...

  6. High Efficiency Engine Systems Development and Evaluation | Department...

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

    High Efficiency Engine Systems Development and Evaluation High Efficiency Engine Systems Development and Evaluation 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle...

  7. Energy Efficient HVAC System for Distributed Cooling/Heating...

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

    Efficient HVAC System for Distributed CoolingHeating with Thermoelectric Devices Energy Efficient HVAC System for Distributed CoolingHeating with Thermoelectric Devices 2012 DOE...

  8. Integrated Solar Thermochemical Reaction System for High Efficiency...

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

    Integrated Solar Thermochemical Reaction System for High Efficiency Production of Electricity Integrated Solar Thermochemical Reaction System for High Efficiency Production of...

  9. Technology and System Level Demonstration of Highly Efficient...

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

    Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks Technology and System Level Demonstration of Highly Efficient and Clean,...

  10. Development of a High-Efficiency Zonal Thermoelectric HVAC System...

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

    a High-Efficiency Zonal Thermoelectric HVAC System for Automotive Applications Development of a High-Efficiency Zonal Thermoelectric HVAC System for Automotive Applications...

  11. Steam System Efficiency Optimized After J.R. Simplot Fertilizer...

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

    Steam System Efficiency Optimized After J.R. Simplot Fertilizer Plant Receives Energy Assessment Steam System Efficiency Optimized After J.R. Simplot Fertilizer Plant Receives...

  12. Advanced Systems of Efficient Use of Electrical Energy SURE ...

    Open Energy Info (EERE)

    Advanced Systems of Efficient Use of Electrical Energy SURE (Smart Grid Project) Jump to: navigation, search Project Name Advanced Systems of Efficient Use of Electrical Energy...

  13. A Transportation Network Efficiency Measure that Captures Flows, Behavior,

    E-Print Network [OSTI]

    Nagurney, Anna

    Guire, and Winsten (1956), that electric power generation and distribution networks can be reformulated and solved Transportation Network Equilibrium Reformulation of Electric Power Supply Chain Networks Electric Power Supply with Applications to Network Component Importance Identification and Vulnerability Anna NagurneyAnna Nagurney Qiang

  14. Thinking small leads to efficient HVAC system

    SciTech Connect (OSTI)

    Not Available

    1981-06-01T23:59:59.000Z

    The energy efficient design of a Park Avenue office tower is discussed. The 27 story, 260,000 sq. ft. building features an energy efficient HVAC system, including separate mechanical rooms on each floor and a pre-cooling coil utilizing water from a cooling tower. The building was designed so that condenser water from the cooling tower is run through a pre-cooling coil on each floor in order to provide free cooling before the water goes through the condenser coil. The building also uses a Honeywell energy management system to control the start and stop of various mechanical equipment according to outside conditions and building loads. (MJF)

  15. Transportation Planning & Decision Science Group Transportation Systems Research Group Diane Davidson Keith Kahl

    E-Print Network [OSTI]

    Transportation Planning & Decision Science Group Transportation Systems Research Group Diane Davidson Keith Kahl 865-946-1475 865-946-1236 Center for Transportation Analysis News Oak Ridge National, during the Chairman's Luncheon at the 92nd Annual Transportation Research Board (TRB) Meeting

  16. Industrial Compressed Air System Energy Efficiency Guidebook.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administration.

    1993-12-01T23:59:59.000Z

    Energy efficient design, operation and maintenance of compressed air systems in industrial plants can provide substantial reductions in electric power and other operational costs. This guidebook will help identify cost effective, energy efficiency opportunities in compressed air system design, re-design, operation and maintenance. The guidebook provides: (1) a broad overview of industrial compressed air systems, (2) methods for estimating compressed air consumption and projected air savings, (3) a description of applicable, generic energy conservation measures, and, (4) a review of some compressed air system demonstration projects that have taken place over the last two years. The primary audience for this guidebook includes plant maintenance supervisors, plant engineers, plant managers and others interested in energy management of industrial compressed air systems.

  17. Heat transport system, method and material

    DOE Patents [OSTI]

    Musinski, D.L.

    1987-04-28T23:59:59.000Z

    A heat transport system, method and composite material are disclosed in which a plurality of hollow spherical shells or microspheres having an outside diameter of less than or equal to 500 microns are encapsulated or embedded within a bulk material. Each shell has captured therein a volatile working fluid, such that each shell operates as a microsized heat pipe for conducting heat through the composite structure. 1 fig.

  18. A Transportation Network EfficiencyA Transportation Network Efficiency Measure that Captures Flows, Behavior,Measure that Captures Flows, Behavior,

    E-Print Network [OSTI]

    Nagurney, Anna

    ), that electric power generation and distribution networks can be reformulated and solved as transportation and VulnerabilityVulnerability University of California, Berkeley, #12;Funding for our research has been provided Memorial Fund - University of Massachusetts at Amherst #12;Network VulnerabilityNetwork Vulnerability

  19. Intelligent Transportation Systems: Saving Lives, Time and Money Kristin Tufte

    E-Print Network [OSTI]

    Bertini, Robert L.

    Intelligent Transportation Systems: Saving Lives, Time and Money Kristin Tufte Portland State University June 23, 2010 #12;Intelligent Transportation Systems: Saving Lives, Time and Money 1,400,000 urban cities 3 counties 1 region #12;Intelligent Transportation Systems: Saving Lives, Time and Money Why Now

  20. Efficient Energy Transport in Photosynthesis: Roles of Coherence and Entanglement

    E-Print Network [OSTI]

    Apoorva D. Patel

    2011-04-07T23:59:59.000Z

    Recently it has been discovered---contrary to expectations of physicists as well as biologists---that the energy transport during photosynthesis, from the chlorophyll pigment that captures the photon to the reaction centre where glucose is synthesised from carbon dioxide and water, is highly coherent even at ambient temperature and in the cellular environment. This process and the key molecular ingredients that it depends on are described. By looking at the process from the computer science view-point, we can study what has been optimised and how. A spatial search algorithmic model based on robust features of wave dynamics is presented.

  1. Efficient Energy Transport in Photosynthesis: Roles of Coherence and Entanglement

    E-Print Network [OSTI]

    Patel, Apoorva D

    2011-01-01T23:59:59.000Z

    Recently it has been discovered---contrary to expectations of physicists as well as biologists---that the energy transport during photosynthesis, from the chlorophyll pigment that captures the photon to the reaction centre where glucose is synthesised from carbon dioxide and water, is highly coherent even at ambient temperature and in the cellular environment. This process and the key molecular ingredients that it depends on are described. By looking at the process from the computer science view-point, we can study what has been optimised and how. A spatial search algorithmic model based on robust features of wave dynamics is presented.

  2. Optimal trajectories for efficient atomic transport without final excitation

    E-Print Network [OSTI]

    Xi Chen; E. Torrontegui; Dionisis Stefanatos; Jr-Shin Li; J. G. Muga

    2011-08-08T23:59:59.000Z

    We design optimal harmonic-trap trajectories to transport cold atoms without final excitation, combining an inverse engineering techniqe based on Lewis-Riesenfeld invariants with optimal control theory. Since actual traps are not really harmonic, we keep the relative displacement between the center of mass and the trap center bounded. Under this constraint, optimal protocols are found according to different physical criteria. The minimum time solution has a "bang-bang" form, and the minimum displacement solution is of "bang-off-bang" form. The optimal trajectories for minimizing the transient energy are also discussed.

  3. CE 668 Urban Public Transportation Systems Reading List

    E-Print Network [OSTI]

    Hickman, Mark

    1 CE 668 Urban Public Transportation Systems Reading List General Reference Alan Black, Urban Mass Transportation Planning. New York: McGraw-Hill, 1995. Canadian Urban Transit Association, The Canadian Transit.), Public Transportation. Englewood Cliffs: Prentice-Hall, 1992. Vukan Vuchic, Urban Public Transportation

  4. Geographic Information Systems-Transportation ISTEA management systems server-net prototype pooled fund study: Phase B summary

    SciTech Connect (OSTI)

    Espinoza, J. Jr.; Dean, C.D.; Armstrong, H.M. [and others

    1997-06-01T23:59:59.000Z

    The Geographic Information System-Transportation (GIS-T) ISTEA Management Systems Server Net Prototype Pooled Fund Study represents the first national cooperative effort in the transportation industry to address the management and monitoring systems as well as the statewide and metropolitan transportation planning requirements of the Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA). The Study was initiated in November 1993 through the Alliance for Transportation Research and under the leadership of the New Mexico State Highway and Transportation Department. Sandia National Laboratories, an Alliance partner, and Geographic Paradigm Computing. Inc. provided technical leadership for the project. In 1992, the Alliance for Transportation Research, the New Mexico State Highway and Transportation Department, Sandia National Laboratories, and Geographic Paradigm Computing, Inc., proposed a comprehensive research agenda for GIS-T. That program outlined a national effort to synthesize new transportation policy initiatives (e.g., management systems and Intelligent Transportation Systems) with the GIS-T server net ideas contained in the NCHRP project {open_quotes}Adaptation of GIS to Transportation{close_quotes}. After much consultation with state, federal, and private interests, a project proposal based on this agenda was prepared and resulted in this Study. The general objective of the Study was to develop GIS-T server net prototypes supporting the ISTEA requirements for transportation planning and management and monitoring systems. This objective can be further qualified to: (1) Create integrated information system architectures and design requirements encompassing transportation planning activities and data. (2) Encourage the development of functional GIS-T server net prototypes. (3) Demonstrate multiple information systems implemented in a server net environment.

  5. advanced rural transportation systems: Topics by E-print Network

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

    Systems 1999 McGowen, Patrick 7 Functional And Interface Requirements For Advanced Public Transportation Systems University of California eScholarship Repository Summary:...

  6. Transportation Energy Futures Series: Effects of Travel Reduction and Efficient Driving on Transportation: Energy Use and Greenhouse Gas Emissions

    SciTech Connect (OSTI)

    Porter, C. D.; Brown, A.; DeFlorio, J.; McKenzie, E.; Tao, W.; Vimmerstedt, L.

    2013-03-01T23:59:59.000Z

    Since the 1970s, numerous transportation strategies have been formulated to change the behavior of drivers or travelers by reducing trips, shifting travel to more efficient modes, or improving the efficiency of existing modes. This report summarizes findings documented in existing literature to identify strategies with the greatest potential impact. The estimated effects of implementing the most significant and aggressive individual driver behavior modification strategies range from less than 1% to a few percent reduction in transportation energy use and GHG emissions. Combined strategies result in reductions of 7% to 15% by 2030. Pricing, ridesharing, eco-driving, and speed limit reduction/enforcement strategies are widely judged to have the greatest estimated potential effect, but lack the widespread public acceptance needed to accomplish maximum results. This is one of a series of reports produced as a result of the Transportation Energy Futures (TEF) project, a Department of Energy-sponsored multi-agency project initiated to pinpoint underexplored strategies for abating GHGs and reducing petroleum dependence related to transportation.

  7. Transfers and path choice in urban public transport systems

    E-Print Network [OSTI]

    Guo, Zhan, 1973-

    2008-01-01T23:59:59.000Z

    Transfers are endemic in public transport systems. Empirical evidence shows that a large portion of public transport journeys involve at least one change of vehicles, and that the transfer experience significantly affects ...

  8. aircraft transportation system: Topics by E-print Network

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

    737-800 commercial transport aircraft) Boeing,2 Lockheed-Martin,3 Northrop-Grumman,4 Raytheon,5 and BAE Systems6 all include some version de Weck, Olivier L. 167 Transport...

  9. Innovative technology summary report: Transportable vitrification system

    SciTech Connect (OSTI)

    NONE

    1998-09-01T23:59:59.000Z

    At the end of the cold war, many of the Department of Energy`s (DOE`s) major nuclear weapons facilities refocused their efforts on finding technically sound, economic, regulatory compliant, and stakeholder acceptable treatment solutions for the legacy of mixed wastes they had produced. In particular, an advanced stabilization process that could effectively treat the large volumes of settling pond and treatment sludges was needed. Based on this need, DOE and its contractors initiated in 1993 the EM-50 sponsored development effort required to produce a deployable mixed waste vitrification system. As a consequence, the Transportable Vitrification System (TVS) effort was undertaken with the primary requirement to develop and demonstrate the technology and associated facility to effectively vitrify, for compliant disposal, the applicable mixed waste sludges and solids across the various DOE complex sites. After 4 years of development testing with both crucible and pilot-scale melters, the TVS facility was constructed by Envitco, evaluated and demonstrated with surrogates, and then successfully transported to the ORNL ETTP site and demonstrated with actual mixed wastes in the fall of 1997. This paper describes the technology, its performance, the technology applicability and alternatives, cost, regulatory and policy issues, and lessons learned.

  10. Scale-estimation of quantum coherent energy transport in multiple-minima systems

    E-Print Network [OSTI]

    Tristan Farrow; Vlatko Vedral

    2014-06-17T23:59:59.000Z

    A generic and intuitive model for coherent energy transport in multiple minima systems coupled to a quantum mechanical bath is shown. Using a simple spin-boson system, we illustrate how a generic donor-acceptor system can be brought into resonance using a narrow band of vibrational modes, such that the transfer efficiency of an electron-hole pair (exciton) is made arbitrarily high. Coherent transport phenomena in nature are of renewed interest since the discovery that a photon captured by the light-harvesting complex (LHC) in photosynthetic organisms can be conveyed to a chemical reaction centre with near-perfect efficiency. Classical explanations of the transfer use stochastic diffusion to model the hopping motion of a photo-excited exciton. This accounts inadequately for the speed and efficiency of the energy transfer measured in a series of recent landmark experiments. Taking a quantum mechanical perspective can help capture the salient features of the efficient part of that transfer. To show the versatility of the model, we extend it to a multiple minima system comprising seven-sites, reminiscent of the widely studied Fenna-Matthews-Olson (FMO) light-harvesting complex. We show that an idealised transport model for multiple minima coupled to a narrow-band phonon can transport energy with arbitrarily high efficiency.

  11. Natural Gas Compression Technology Improves Transport and Efficiencies, Lowers Operating Costs

    Broader source: Energy.gov [DOE]

    An award-winning compressor design that decreases the energy required to compress and transport natural gas, lowers operating costs, improves efficiencies and reduces the environmental footprint of well site operations has been developed by a Massachusetts-based company with support from the U.S. Department of Energy

  12. Convective heat transport in geothermal systems

    SciTech Connect (OSTI)

    Lippmann, M.J.; Bodvarsson, G.S.

    1986-08-01T23:59:59.000Z

    Most geothermal systems under exploitation for direct use or electrical power production are of the hydrothermal type, where heat is transferred essentially by convection in the reservoir, conduction being secondary. In geothermal systems, buoyancy effects are generally important, but often the fluid and heat flow patterns are largely controlled by geologic features (e.g., faults, fractures, continuity of layers) and location of recharge and discharge zones. During exploitation, these flow patterns can drastically change in response to pressure and temperature declines, and changes in recharge/discharge patterns. Convective circulation models of several geothermal systems, before and after start of fluid production, are described, with emphasis on different characteristics of the systems and the effects of exploitation on their evolution. Convective heat transport in geothermal fields is discussed, taking into consideration (1) major geologic features; (2) temperature-dependent rock and fluid properties; (3) fracture- versus porous-medium characteristics; (4) single- versus two-phase reservoir systems; and (5) the presence of noncondensible gases.

  13. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01T23:59:59.000Z

    Comparison of energy efficiency between variable refrigeranttheir superior energy efficiency. The variable refrigerantfew studies reporting the energy efficiency of VRF systems

  14. Transportation Energy Futures Series: Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehicle Sector

    SciTech Connect (OSTI)

    Vyas, A. D.; Patel, D. M.; Bertram, K. M.

    2013-03-01T23:59:59.000Z

    Considerable research has focused on energy efficiency and fuel substitution options for light-duty vehicles, while much less attention has been given to medium- and heavy-duty trucks, buses, aircraft, marine vessels, trains, pipeline, and off-road equipment. This report brings together the salient findings from an extensive review of literature on future energy efficiency options for these non-light-duty modes. Projected activity increases to 2050 are combined with forecasts of overall fuel efficiency improvement potential to estimate the future total petroleum and greenhouse gas (GHG) emissions relative to current levels. This is one of a series of reports produced as a result of the Transportation Energy Futures (TEF) project, a Department of Energy-sponsored multi-agency project initiated to pinpoint underexplored strategies for abating GHGs and reducing petroleum dependence related to transportation.

  15. Simulation framework for intelligent transportation systems

    SciTech Connect (OSTI)

    Ewing, T.; Doss, E.; Hanebutte, U.; Tentner, A.

    1996-10-01T23:59:59.000Z

    A simulation framework has been developed for a large-scale, comprehensive, scaleable simulation of an Intelligent Transportation System (ITS). The simulator is designed for running on parallel computers and distributed (networked) computer systems, but can run on standalone workstations for smaller simulations. The simulator currently models instrumented smart vehicles with in-vehicle navigation units capable of optimal route planning and Traffic Management Centers (TMC). The TMC has probe vehicle tracking capabilities (display position and attributes of instrumented vehicles), and can provide two-way interaction with traffic to provide advisories and link times. Both the in-vehicle navigation module and the TMC feature detailed graphical user interfaces to support human-factors studies. Realistic modeling of variations of the posted driving speed are based on human factors studies that take into consideration weather, road conditions, driver personality and behavior, and vehicle type. The prototype has been developed on a distributed system of networked UNIX computers but is designed to run on parallel computers, such as ANL`s IBM SP-2, for large-scale problems. A novel feature of the approach is that vehicles are represented by autonomous computer processes which exchange messages with other processes. The vehicles have a behavior model which governs route selection and driving behavior, and can react to external traffic events much like real vehicles. With this approach, the simulation is scaleable to take advantage of emerging massively parallel processor (MPP) systems.

  16. Advanced simulation of intelligent transportation systems

    SciTech Connect (OSTI)

    Ewing, T.; Doss, E.; Hanebutte, U.; Tentner, A. [Argonne National Lab., IL (United States)

    1996-11-01T23:59:59.000Z

    A large-scale, comprehensive, scaleable simulation of an Intelligent Transportation System (ITS) has been developed which is capable of running on parallel computers and distributed (networked) computer systems. The simulator currently models instrumented {open_quotes}smart{close_quotes} vehicles with in-vehicle navigation units capable of optimal route planning and Traffic Management Centers (TMC). The TMC has probe vehicle tracking capabilities (display position and attributes of instrumented vehicles), and can provide two-way interaction with traffic to provide advisories and link times. Both the in-vehicle navigation module and the TMC feature detailed graphical user interfaces to support human-factors studies. The prototype has been developed on a distributed system of networked UNIX computers but is designed to run on parallel computers, such as ANL`s IBM SP-2, for large-scale problems. A novel feature of this approach is that vehicles are represented by autonomous computer processes which exchange messages with other processes. The vehicles have a behavior model which governs route selection and driving behavior, and can react to external traffic events much like real vehicles. With this approach, the simulation is scaleable to take advantage of emerging massively parallel processor (MPP) systems.

  17. Transportation Policy Analysis and Systems Planning Fall 2009/2010

    E-Print Network [OSTI]

    Singh, Jaswinder Pal

    SYLLABUS WWS 527a Transportation Policy Analysis and Systems Planning Fall 2009/2010 Course Description Part 1. Perspective on the Transportation Sector of the Economy: Its Function, Its Players, Its of Course Elements of the transportation sector of the economy, the player, the technologies

  18. Fuel cell system for transportation applications

    DOE Patents [OSTI]

    Kumar, Romesh (Naperville, IL); Ahmed, Shabbir (Evanston, IL); Krumpelt, Michael (Naperville, IL); Myles, Kevin M. (Downers Grove, IL)

    1993-01-01T23:59:59.000Z

    A propulsion system for a vehicle having pairs of front and rear wheels and a fuel tank. An electrically driven motor having an output shaft operatively connected to at least one of said pair of wheels is connected to a fuel cell having a positive electrode and a negative electrode separated by an electrolyte for producing dc power to operate the motor. A partial oxidation reformer is connected both to the fuel tank and to the fuel cell receives hydrogen-containing fuel from the fuel tank and water and air and for partially oxidizing and reforming the fuel with water and air in the presence of an oxidizing catalyst and a reforming catalyst to produce a hydrogen-containing gas. The hydrogen-containing gas is sent from the partial oxidation reformer to the fuel cell negative electrode while air is transported to the fuel cell positive electrode to produce dc power for operating the electric motor.

  19. Fuel cell system for transportation applications

    DOE Patents [OSTI]

    Kumar, R.; Ahmed, S.; Krumpelt, M.; Myles, K.M.

    1993-09-28T23:59:59.000Z

    A propulsion system is described for a vehicle having pairs of front and rear wheels and a fuel tank. An electrically driven motor having an output shaft operatively connected to at least one of said pair of wheels is connected to a fuel cell having a positive electrode and a negative electrode separated by an electrolyte for producing dc power to operate the motor. A partial oxidation reformer is connected both to the fuel tank and to the fuel cell and receives hydrogen-containing fuel from the fuel tank and uses water and air for partially oxidizing and reforming the fuel in the presence of an oxidizing catalyst and a reforming catalyst to produce a hydrogen-containing gas. The hydrogen-containing gas is sent from the partial oxidation reformer to the fuel cell negative electrode while air is transported to the fuel cell positive electrode to produce dc power for operating the electric motor. 3 figures.

  20. Efficient Simulation and Reformulation of Lithium-Ion Battery Models for Enabling Electric Transportation

    E-Print Network [OSTI]

    Northrop, Paul W. C.

    Improving the efficiency and utilization of battery systems can increase the viability and cost-effectiveness of existing technologies for electric vehicles (EVs). Developing smarter battery management systems and advanced ...

  1. Energy Efficient Prefetching with Buffer Disks for Cluster File Systems

    E-Print Network [OSTI]

    Qin, Xiao

    Energy Efficient Prefetching with Buffer Disks for Cluster File Systems Adam Manzanares, Xiaojun the energy- efficiency of large scale parallel storage systems. To address these issues we introduce EEVFS (Energy Efficient Virtual File System), which is able to manage data placement and disk states to help

  2. air transportation system: Topics by E-print Network

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

    Traffic Control 26 Environmental policymaking for air transportation : toward an emissions trading system. Open Access Theses and Dissertations Summary: ??Aviation is at a turning...

  3. air transport system: Topics by E-print Network

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

    Traffic Control 26 Environmental policymaking for air transportation : toward an emissions trading system. Open Access Theses and Dissertations Summary: ??Aviation is at a turning...

  4. Base Technology for Radioactive Material Transportation Packaging Systems

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

    1992-07-08T23:59:59.000Z

    To establish Department of Energy (DOE) policies and responsibilities for coordinating and planning base technology for radioactive material transportation packaging systems.

  5. Equilibrium and transport properties of constrained systems

    E-Print Network [OSTI]

    Debasish Chaudhuri

    2006-10-16T23:59:59.000Z

    Systems under external confinement and constraints often show interesting properties. In this thesis, we study some systems under external confinement. We begin by finding out the probability distribution of end-to-end separation of a Worm Like Chain (WLC) polymer whose ends are positionally (and orientationally) constrained. We use Monte-Carlo simulations (MC) and a theoretical mapping of the WLC to a quantum particle moving on the surface of an unit sphere to find multimodality in Helmholtz ensemble as a generic signature of semi-flexibility. Secondly, we study Laser Induced Freezing using a Kosterlitz-Thouless type renormalization group calculation and a restricted MC simulation to obtain phase diagrams for Hard Disk, Soft Disk and DLVO potentials. They show very good agreement with phase diagrams simulated by other groups. Lastly, we study the strain response and failure mechanism of a two-dimensional solid confined within a hard wall channel using MC and molecular dynamics simulations. We find a reversible plastic failure through solid-smectic coexistence and observe layering transitions. Mean field calculations can capture some of these features. We study the heat transport in this system thorugh nonequilibrium molecular dynamics simulations and find strong signatures of the transitions. We propose a simple free volume calculation that reproduces some qualitative features of the strain response of heat current for small strains.

  6. Argonne simulation framework for intelligent transportation systems

    SciTech Connect (OSTI)

    Ewing, T.; Doss, E.; Hanebutte, U.; Canfield, T.; Brown-VanHoozer, A.; Tentner, A.

    1996-04-01T23:59:59.000Z

    A simulation framework has been developed which defines a high-level architecture for a large-scale, comprehensive, scalable simulation of an Intelligent Transportation System (ITS). The simulator is designed to run on parallel computers and distributed (networked) computer systems; however, a version for a stand alone workstation is also available. The ITS simulator includes an Expert Driver Model (EDM) of instrumented ``smart`` vehicles with in-vehicle navigation units. The EDM is capable of performing optimal route planning and communicating with Traffic Management Centers (TMC). A dynamic road map data base is sued for optimum route planning, where the data is updated periodically to reflect any changes in road or weather conditions. The TMC has probe vehicle tracking capabilities (display position and attributes of instrumented vehicles), and can provide 2-way interaction with traffic to provide advisories and link times. Both the in-vehicle navigation module and the TMC feature detailed graphical user interfaces that includes human-factors studies to support safety and operational research. Realistic modeling of variations of the posted driving speed are based on human factor studies that take into consideration weather, road conditions, driver`s personality and behavior and vehicle type. The simulator has been developed on a distributed system of networked UNIX computers, but is designed to run on ANL`s IBM SP-X parallel computer system for large scale problems. A novel feature of the developed simulator is that vehicles will be represented by autonomous computer processes, each with a behavior model which performs independent route selection and reacts to external traffic events much like real vehicles. Vehicle processes interact with each other and with ITS components by exchanging messages. With this approach, one will be able to take advantage of emerging massively parallel processor (MPP) systems.

  7. Ultra Efficient Combined Heat, Hydrogen, and Power System - Presentati...

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

    Heat, Hydrogen, and Power System - Presentation by FuelCell Energy, June 2011 Ultra Efficient Combined Heat, Hydrogen, and Power System - Presentation by FuelCell Energy, June...

  8. Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers

    E-Print Network [OSTI]

    -Speed-Drive Chillers Tengfang Xu June 15, 2005 The project is funded by the California Energy Commission's Industrial Efficient Cleanrooms Efficient HVAC Water Systems: Variable-Speed-Drive Chillers Tengfang Xu Contents HVAC.............................................................................................. 2 Variable-Speed-Drive Chillers

  9. Sandia National Laboratories: Transportation Energy Systems Analysis

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

    Transitioning the Transportation Sector: Exploring the Intersection of Biofuels and Electric Vehicles (October 5, 2010) Next Generation Biofuels and Advanced Engines for...

  10. Optimization Problems in Natural Gas Transportation Systems

    E-Print Network [OSTI]

    Roger Z. Ríos-Mercado

    2015-03-02T23:59:59.000Z

    Mar 2, 2015 ... Abstract: This paper provides a review on the most relevant research works conducted to solve natural gas transportation problems via pipeline ...

  11. Improving Energy Efficiency and Security for Disk Systems

    E-Print Network [OSTI]

    Qin, Xiao

    Improving Energy Efficiency and Security for Disk Systems Shu Yin1 , Mohammed I. Alghamdi2 been focused on data security and energy efficiency, most of the existing approaches have concentrated optimization with security services to enhance the security of energy-efficient large- scale storage systems

  12. Evaluation of Hydraulic Efficiency of Disinfection Systems Based on

    E-Print Network [OSTI]

    Evaluation of Hydraulic Efficiency of Disinfection Systems Based on Residence Time Distribution. Accepted November 9, 2010. Hydraulic efficiency is a vital component in evaluating the disinfection to overestimate, severely in some instances, the actual hydraulic efficiency as obtained from the system's flow

  13. An analysis of robustness and flexibility in freight transportation systems

    E-Print Network [OSTI]

    Unahalekhaka, Atikhun

    2013-01-01T23:59:59.000Z

    Freight transportation is a complex large scale system that operates under a highly dynamic and uncertain environment. Due to the scale and complexity of the system, a highly interdependent set of decisions are made across ...

  14. Scalability of the air transportation system and development of multi-airport systems : a worldwide perspective

    E-Print Network [OSTI]

    Bonnefoy, Philippe A

    2008-01-01T23:59:59.000Z

    With the growing demand for air transportation and the limited ability to increase capacity at some key points in the air transportation system, there are concerns that in the future the system will not scale to meet demand. ...

  15. Scalability of the Air Transportation System and Development of Multi-Airport Systems: A Worldwide Perspective

    E-Print Network [OSTI]

    Bonnefoy, Philippe

    With the growing demand for air transportation and the limited ability to increase capacity at some key points in the air transportation system, there are concerns that in the future the system will not scale to meet demand. ...

  16. Procurement of a fully licensed radioisotope thermoelectric generator transportation system

    SciTech Connect (OSTI)

    Adkins, H.E.; Bearden, T.E. (Westinghouse Hanford Company, P.O. Box 1970, N1-42, Richland, Washington 99352 (US))

    1991-01-01T23:59:59.000Z

    A fully licensed transportation system for Radioisotope Thermoelectric Generators and Light-Weight Radioisotope Heater Units is currently being designed and built. The system will comply with all applicable U.S. Department of Transportation regulations without the use of a DOE Alternative.'' The U.S. Department of Transportation has special double containment'' requirements for plutonium. The system packaging uses a doubly contained bell jar'' concept. A refrigerated trailer is used for cooling the high-heat payloads. The same packaging is used for both high- and low-heat payloads. The system is scheduled to be available for use by mid-1992.

  17. Procurement of a fully licensed radioisotope thermoelectric generator transportation system

    SciTech Connect (OSTI)

    Adkins, H.E.; Bearden, T.E.

    1990-10-01T23:59:59.000Z

    A fully licensed transportation system for Radioisotope Thermoelectric Generators and Light-Weight Radioisotope Heater Units is currently being designed and built. The system will comply with all applicable US Department of Transportation regulations without the use of a DOE Alternative.'' The US Department of Transportation has special double containment'' requirements for plutonium. The system packaging uses a doubly contained bell jar'' concept. A refrigerated trailer is used for cooling the high-heat payloads. The same packaging is used for both high- and low-heat payloads. The system is scheduled to be available for use by mid-1992. 4 refs., 4 figs., 2 tabs.

  18. Irrigation Retrofit Program Steps to Improving sprinkler system efficiency

    E-Print Network [OSTI]

    Jawitz, James W.

    Irrigation Retrofit Program Steps to Improving sprinkler system efficiency Step 1. Replace Program provides rebates for improving urban landscape irrigation systems. Homeowners Associations can receive up to $400 for upgrading their irrigation system. In order to receive reimbursement , sign up

  19. Identifying Efficiency Degrading Faults in Split Air Conditioning Systems

    E-Print Network [OSTI]

    Terrill, T. J.; Brown, M. L.; Cheyne, R. W. Jr.; Cousins, A. J.; Daniels, B. P.; Erb, K. L.; Garcia, P. A.; Leutermann, M. J.; Nel, A. J.; Robert, C. L.; Widger, S. B.; Williams, A. G.; Rasmussen, B. P.

    2013-01-01T23:59:59.000Z

    Studies estimate that as much as 50% of packaged air conditioning systems operate in faulty conditions that degrade system efficiency. Common faults include: under- and over-charged systems (too much or too little refrigerant), faulty expansions...

  20. Development of an automated efficiency and loss measurement system for high-efficiency power converters

    E-Print Network [OSTI]

    Cheung, Grace M

    2010-01-01T23:59:59.000Z

    When building a high performance power converter system, characterization becomes a significant task in and of itself. This thesis addresses the development of an automated efficiency and loss measurement system for ...

  1. Technology and System Level Demonstration of Highly Efficient...

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

    DoE SuperTruck Program Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks Principal Investigator: Donald Stanton (Cummins)...

  2. Technology and System Level Demonstration of Highly Efficient...

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

    and Peer Evaluation arravt081vssnewhouse2011o.pdf More Documents & Publications Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8...

  3. USDA Renewable Energy Systems and Energy Efficiency Improvement...

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

    Agency, under the Rural Energy for America Program, is accepting applications for Renewable Energy Systems and Energy Efficiency Improvement grants of 20,000 or less to...

  4. Technology and System Level Demonstration of Highly Efficient...

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

    Publications Technology and System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks Vehicle Technologies Office Merit Review 2014: Technology and...

  5. Automated transportation management system (ATMS) software project management plan (SPMP)

    SciTech Connect (OSTI)

    Weidert, R.S., Westinghouse Hanford

    1996-05-20T23:59:59.000Z

    The Automated Transportation Management System (ATMS) Software Project Management plan (SPMP) is the lead planning document governing the life cycle of the ATMS and its integration into the Transportation Information Network (TIN). This SPMP defines the project tasks, deliverables, and high level schedules involved in developing the client/server ATMS software.

  6. Adaptive Methods for Modelling Transport Processes in Fractured Subsurface Systems

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    ­ discrete Galerkin method applying finite differences for the discretization in time and the StreamlineAdaptive Methods for Modelling Transport Processes in Fractured Subsurface Systems 3rd­adaptive methods for modelling transport processes in fractured rock. As a simplification, ideal tracers

  7. MODELS AND METRICS FOR ENERGY-EFFICIENT COMPUTER SYSTEMS

    E-Print Network [OSTI]

    Kozyrakis, Christos

    MODELS AND METRICS FOR ENERGY-EFFICIENT COMPUTER SYSTEMS A DISSERTATION SUBMITTED TO THE DEPARTMENT promising energy-efficient technolo- gies, and models to understand the effects of resource utilization decisions on power con- sumption. To facilitate energy-efficiency improvements, this dissertation presents

  8. Interface modified thermally stable hole transporting layer for efficient organic light emitting diodes

    SciTech Connect (OSTI)

    Grover, Rakhi, E-mail: grover.rakhi@gmail.com [Amity Institute of Advanced Research and Studies (Materials and Devices), Amity University, Noida, Uttar Pradesh 201303 (India); Srivastava, Ritu, E-mail: ritu@mail.nplindia.org; Dagar, Janardan; Kamalasanan, M. N. [Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, CSIR-Network of Institute for Solar Energy (NISE), Dr. K.S. Krishnan Road, New Delhi 110012 (India); Mehta, D. S. [Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016 (India)

    2014-08-14T23:59:59.000Z

    Electrical transport in thermally stable 2, 7-bis [N, N-bis (4-methoxy-phenyl) amino]-9, 9-spirobifluorene (MeO-Spiro-TPD) thin films has been investigated as a function of temperature and organic layer thickness. ITO/MeO-Spiro-TPD interface was found to be injection limited and has been studied in detail to find barrier height for hole injection. The thickness of tetra-fluoro-tetracyano-quinodimethane thin films were optimized to be used as hole injection buffer layer which resulted in switching of charge transport mechanism from injection limited to space charge limited conduction above a critical thickness of 3?nm. Hole mobility has been measured using transient space charge limited conduction (SCLC), field dependent SCLC, and top contact transistor characteristics. The charge carrier transport in interface modified hole only devices was analysed using Gaussian disorder model. The thermal stability of MeO-Spiro-TPD has been investigated by atomic force microscopy and X-ray diffraction studies. The study indicates a thermally stable and highly efficient hole transport material for application in organic semiconductor based devices.

  9. Human-Centered Public Transportation Systems for Persons with Cognitive Disabilities

    E-Print Network [OSTI]

    Fischer, Gerhard

    Human-Centered Public Transportation Systems for Persons with Cognitive Disabilities -- Challenges to use mainstream public transportation systems. This project faces two unique challenges: (1) there are no true "experts" who understand all facets of public transportation system design, operation

  10. A systems analysis of scheduled air transportation networks

    E-Print Network [OSTI]

    Swan, William M.

    1979-01-01T23:59:59.000Z

    This work establishes the conditions for airline system design building from submodels of smaller aspects of air transportation. The first three sections develop submodels which then are combined in extensive numerical ...

  11. On the solute transport in an aquifer-aquitard system 

    E-Print Network [OSTI]

    Bian, Aiguo

    2009-05-15T23:59:59.000Z

    This dissertation is composed of five chapters and three major contributions are presented in Chapter II, III and IV. Chapter I provided a review of studies on solute transport in aquifer-aquitard system. If the aquitard is considered, two...

  12. Information and decentralization in inventory, supply chain, and transportation systems

    E-Print Network [OSTI]

    Roels, Guillaume

    2006-01-01T23:59:59.000Z

    This thesis investigates the impact of lack of information and decentralization of decision-making on the performance of inventory, supply chain, and transportation systems. In the first part of the thesis, we study two ...

  13. US Department of Energy automated transportation management system

    SciTech Connect (OSTI)

    Thomas, T.M. [Dept. of Energy, Germantown, MD (United States); Frost, D.M.; Lopez, C.A. [MELE Associates, Rockville, MD (United States)] [and others

    1996-12-31T23:59:59.000Z

    The US Department of Energy (DOE) has approximately 80 facilities throughout the United States that specialize in either scientific research, engineering, technology, production, and/or waste management activities. These facilities can best be described as Government Owned, Contractor Operated (GOCO) sites, and vary in size from very small laboratories to large industrial plant type facilities. Each of these GOCO`s have varying needs for transportation of materials into and/or out of their facility. Therefore, Traffic Management operations will differ from site to site due to size and the internal or site specific mission. The DOE Transportation Management Division (TMD) has the corporate responsibility to provide a well managed transportation management program for the safe, efficient, and economical transportation of all DOE-owned materials. To achieve this mission, TMD provides oversight, and when necessary, resources to assist in ensuring regulatory compliance in the packaging and shipment of DOE-owned materials. A large part of TMD`s responsibility is to develop, administer, and provide policies and guidance concerning department-wide transportation and packaging operations. This responsibility includes overall Transportation Management policies and programs for the packaging and movement of all DOE materials, including radioactive materials, other hazardous materials/substances, and hazardous wastes. TMD formulates policies and guidance that assist the DOE Field Elements and GOCO`s in meeting TMD`s goal for safe, efficient and economical transportation. Considering there are at least 80 shipping and receiving sites, the challenge encountered by TMD has been the difficulty in managing such a diverse transportation community.

  14. TRESS: A Transportable Radioactive Effluent Solidification System

    SciTech Connect (OSTI)

    Sims, J. [BBN Environmental Management Ltd., Bramhall (United Kingdom). WasteChem Div.; Schneider, K. [NUKEM GmbH, Alzenau (Germany)

    1993-12-31T23:59:59.000Z

    This paper describes an attempt to produce a totally new concept for a transportable plant capable of encapsulating radioactive sludges and ion exchange resins, employing recently developed dewatering and mixing techniques. One of the prime aims of the investigation was to produce a plant which could handle both beta/gamma and alpha-bearing materials.

  15. Nuclear reactor heat transport system component low friction support system

    DOE Patents [OSTI]

    Wade, Elman E. (Ruffs Dale, PA)

    1980-01-01T23:59:59.000Z

    A support column for a heavy component of a liquid metal fast breeder reactor heat transport system which will deflect when the pipes leading coolant to and from the heavy component expand or contract due to temperature changes includes a vertically disposed pipe, the pipe being connected to the heavy component by two longitudinally spaced cycloidal dovetail joints wherein the distal end of each of the dovetails constitutes a part of the surface of a large diameter cylinder and the centerlines of these large diameter cylinders intersect at right angles and the pipe being supported through two longitudinally spaced cycloidal dovetail joints wherein the distal end of each of the dovetails constitutes a part of the surface of a large diameter cylinder and the centerlines of these large diameter cylinders intersect at right angles, each of the cylindrical surfaces bearing on a flat and horizontal surface.

  16. Use of Computational Intelligence in Illumination Systems Searching Energetic Efficiency 

    E-Print Network [OSTI]

    Silva, I.; Tostes, M. E.; Silva, R.

    2007-01-01T23:59:59.000Z

    To foment the study of methodologies to project and control efficient illumination systems, aiming at the reduction of energy consumption and optimal performance of illumination systems. Applying artificial neural networks to determine the luminance...

  17. CIBO's Energy Efficiency Handbook for Steam Power Systems

    E-Print Network [OSTI]

    Bessette, R. D.

    The Council of Industrial Boiler Owners (CIBO) has developed a handbook to help boiler operators get the best performance from their industrial steam systems. This energy efficiency handbook takes a comprehensive look at the boiler and steam system...

  18. Energy efficient HVAC system features thermal storage and heat recovery

    SciTech Connect (OSTI)

    Bard, E.M. (Bard, Rao + Athanas Consulting Engineering Inc., Boston, MA (United States))

    1994-03-01T23:59:59.000Z

    This article describes a HVAC system designed to efficiently condition a medical center. The topics of the article include energy efficient design of the HVAC system, incentive rebate program by the local utility, indoor air quality, innovative design features, operations and maintenance, payback and life cycle cost analysis results, and energy consumption.

  19. Improving Energy Efficiency of Compressed Air System Based on System Audit

    E-Print Network [OSTI]

    Shanghai, Hongbo Qin; McKane, Aimee

    2008-01-01T23:59:59.000Z

    plan, formulate energy efficiency goals and adopt energyGO-102004-1926 [3] Energy Efficiency and Market Potential ofImproving Energy Efficiency of Compressed Air System Based

  20. Efficiency of compressed-air systems. Final report

    SciTech Connect (OSTI)

    Not Available

    1983-01-01T23:59:59.000Z

    The program undertaken by this contract is intended to quantify the current state of knowledge in American industry concerning the energy efficient design and operation of industrial compressed air systems and system components. Since there is no standard reference for designers and operators of compressed air systems which provides guidelines for maximizing the energy efficiency of these systems, a major product of this contract was the preparation of a guidebook for this purpose.

  1. Scale-Dependent Fracture-Matrix Interactions and Their Impact on Radionuclide Transport: Development of efficient particle-tracking methods

    SciTech Connect (OSTI)

    Rajaram, Harihar [University of Colorado, Boulder; Brutz, Michael [University of Colorado, Boulder; Klein, Dylan R [University of Colorado, Boulder; Mallikamas, Wasin [University of Colorado, Boulder

    2014-09-18T23:59:59.000Z

    Matrix Diffusion and Adsorption within a rock matrix are important mechanisms for retarding transport of radionuclides in fractured rock. Due to computational limitations and difficulties in characterizing complex subsurface systems, diffusive exchange between a fracture network and surrounding rock matrix is often modeled using simplified conceptual representations. There is significant uncertainty in “effective” parameters used in these models, such as the “effective matrix diffusivity”. Often, these parameters are estimated by fitting sparse breakthrough data, and estimated values fall outside meaningful ranges, because simplified interpretive models do not consider complex three-dimensional flow. There is limited understanding of the relationship between the effective parameters and rock mass characteristics including network structure and matrix properties. There is also evidence for an apparent scale-dependence in “effective matrix diffusion” coefficients. These observations raise questions on whether fracture-matrix interaction parameters estimated from small-scale tracer tests can be used for predicting radionuclide fate and transport at the scale of DOE field sites. High-resolution three-dimensional Discrete-Fracture-Network-Matrix (DFNM) models based on well-defined local scale transport equations can help to address some of these questions. Due to tremendous advances in computational technology over the last 10 years, DFNM modeling in relatively large domains is now feasible. The overarching objective of our research is to use DFNM modeling to improve fundamental understanding of how effective parameters in conceptual models are related to fracture network structure and matrix properties. An advanced three-dimensional DFNM model is being developed, which combines upscaled particle-tracking algorithms for fracture-matrix interaction and a parallel fracture-network flow simulator. The particle-tracking algorithms allow complexity in flow fields at different scales, and track transport across fracture-matrix interfaces based on rigorous local approximations to the transport equations. This modeling approach can incorporate aperture variability, multi-scale preferential flow and matrix heterogeneity. We developed efficient particle-tracking methods for handling matrix diffusion and adsorption on fracture walls and demonstrated their efficiency for use within the context of large-scale complex fracture network models with variability in apertures across a network of fractures and within individual fractures.

  2. Workshop on technology issues of superconducting Maglev transportation systems

    SciTech Connect (OSTI)

    Wegrzyn, J.E. (Brookhaven National Lab., Upton, NY (United States)); Shaw, D.T. (New York State Inst. of Superconductivity, Buffalo, NY (United States))

    1991-09-27T23:59:59.000Z

    There exists a critical need in the United States to improve its ground transportation system. One suggested system that offers many advantages over the current transportation infrastructure is Maglev. Maglev represents the latest evolution in very high and speed ground transportation, where vehicles are magnetically levitated, guided, and propelled over elevated guideways at speeds of 300 miles per hour. Maglev is not a new concept but is, however, receiving renewed interest. The objective of this workshop was to further promote these interest by bringing together a small group of specialists in Maglev technology to discuss Maglev research needs and to identify key research issues to the development of a successful Maglev system. The workshop was organized into four sessions based on the following technical areas: Materials, Testing, and Shielding; Magnet Design and Cryogenic Systems; Propulsion and Levitation Systems; and, System Control and Integration.

  3. Cost Analysis of Fuel Cell Systems for Transportation

    E-Print Network [OSTI]

    Cost Analysis of Fuel Cell Systems for Transportation Compressed Hydrogen and PEM Fuel Cell System Discussion Fuel Cell Tech Team FreedomCar Detroit. MI October 20, 2004 TIAX LLC Acorn Park Cambridge Estimates Task 3: Identify Opportunities for System Cost Reduction Tasks 4, 5, 6 & 7: Annual Updates Develop

  4. Vehicle remote charge-all electric transportation system

    SciTech Connect (OSTI)

    Parise, R.J.

    1998-07-01T23:59:59.000Z

    The development of a pollution-free transportation system that utilizes technology from the defense industry combines two industries in a commercial venture. In conjunction with the abatement of pollution that an all-electric transportation system would realize, the defense industry is looking for a commercial market for the technology that it has developed over the years. This new transportation system will accomplish both these goals. To date, the most reliable electric source has been overhead tethered lines or on-ground tracks in public transportation. But these greatly reduce the convenience of route changes and are at the mercy of small traffic pattern changes which can cause traffic tie-ups. The ideal electric bus would have a completely mobile energy source, such as a battery pack. But the limited range of a battery powered vehicle has diminished its use to only specific cases. In private vehicles also, the limited range of zero-pollution battery power has reduced the desirability of all-electric transportation. The electric transportation system proposed here will eliminate these problems. Buses will be sent out on their routes with convenient in-route charging. There will be minimum route changes to accommodate vehicle recharging. The buses will have full mobility and can avoid any traffic tie-ups. The charging of these on-board electrical energy storage systems will take place via a wireless power transmission network that will be established along the roadside on existing power line (telephone) poles or new stand-alone poles that would be in conjunction with the existing poles. Radio frequency (RF) wavelengths such as a microwave or a millimeterwave system or optical frequencies (OF), a laser based system, are wireless energy transmission systems. Utilizing this means to establish a nationwide transportation system will take a technology that has been defense based and use it in a commercial application.

  5. NREL - Advanced Vehicles and Fuels Basics - Center for Transportation Technologies and Systems 2010

    ScienceCinema (OSTI)

    None

    2013-05-29T23:59:59.000Z

    We can improve the fuel economy of our cars, trucks, and buses by designing them to use the energy in fuels more efficiently. Researchers at the National Renewable Energy Laboratory (NREL) are helping the nation achieve these goals by developing transportation technologies like: advanced vehicle systems and components; alternative fuels; as well as fuel cells, hybrid electric, and plug-in hybrid vehicles. For a text version of this video visit http://www.nrel.gov/learning/advanced_vehicles_fuels.html

  6. Aruna Ravinagarajan System Energy Efficiency Lab

    E-Print Network [OSTI]

    Wang, Deli

    scheduler needs toThe task scheduler needs to manage energy consumptionmanage energy consumption energy harvesting Operating with severe energy constraints Too much data to continually transmit Energy Efficiency Lab 12 Execution Time Constraint Given a time limit, what is the highest level of data

  7. Secondary ion collection and transport system for ion microprobe

    DOE Patents [OSTI]

    Ward, James W. (Canoga Park, CA); Schlanger, Herbert (Simi Valley, CA); McNulty, Jr., Hugh (Santa Monica, CA); Parker, Norman W. (Camarillo, CA)

    1985-01-01T23:59:59.000Z

    A secondary ion collection and transport system, for use with an ion microprobe, which is very compact and occupies only a small working distance, thereby enabling the primary ion beam to have a short focal length and high resolution. Ions sputtered from the target surface by the primary beam's impact are collected between two arcuate members having radii of curvature and applied voltages that cause only ions within a specified energy band to be collected. The collected ions are accelerated and focused in a transport section consisting of a plurality of spaced conductive members which are coaxial with and distributed along the desired ion path. Relatively high voltages are applied to alternate transport sections to produce accelerating electric fields sufficient to transport the ions through the section to an ion mass analyzer, while lower voltages are applied to the other transport sections to focus the ions and bring their velocity to a level compatible with the analyzing apparatus.

  8. Enabling efficiency in data center systems

    E-Print Network [OSTI]

    McCullough, John Carleton; McCullough, John Carleton

    2012-01-01T23:59:59.000Z

    battery-powered mobile devices. These systems would benefit significantly from de- tailed power characterization

  9. Energy-efficient lighting system for television

    DOE Patents [OSTI]

    Cawthorne, Duane C. (Amarillo, TX)

    1987-07-21T23:59:59.000Z

    A light control system for a television camera comprises an artificial light control system which is cooperative with an iris control system. This artificial light control system adjusts the power to lamps illuminating the camera viewing area to provide only sufficient artificial illumination necessary to provide a sufficient video signal when the camera iris is substantially open.

  10. Highly Efficient Solar Thermochemical Reaction Systems

    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 DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEND D e e p p a a rDepartment|Energy Part

  11. Transportation, Aging and Disposal Canister System Performance

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssuesEnergyTransportation Work Package Reports |Atlanta,

  12. Transportation functions of the Civilian Radioactive Waste Management System

    SciTech Connect (OSTI)

    Shappert, L.B. [ed.; Attaway, C.R.; Pope, R.B. [Oak Ridge National Lab., TN (United States); Best, R.E.; Danese, F.L. [Science Applications International Corp., Oak Ridge, TN (United States); Dixon, L.D. [Dixon (L.D.), Martinez, GA (United States); Jones, R.H. [Jones (R.H.), Los Gatos, CA (United States); Klimas, M.J. [USDOE Chicago Operations Office, Argonne, IL (United States); Peterson, R.W. [Bentz (E.J.) and Associates, Inc., Alexandria, VA (United States)

    1992-03-01T23:59:59.000Z

    Within the framework of Public Law 97.425 and provisions specified in the Code of Federal Regulations, Title 10 Part 961, the US Department of Energy has the responsibility to accept and transport spent fuel and high-level waste from various organizations which have entered into a contract with the federal government in a manner that protects the health and safety of the public and workers. In implementing these requirements, the Office of Civilian Radioactive Waste Management (OCRWM) has, among other things, supported the identification of functions that must be performed by a transportation system (TS) that will accept the waste for transport to a federal facility for storage and/or disposal. This document, through the application of system engineering principles, identifies the functions that must be performed to transport waste under this law.

  13. Aerospace, Transportation and Advanced Systems Laboratory (ATAS)

    E-Print Network [OSTI]

    Bennett, Gisele

    . ELSYS employs an "end-to-end" approach to developing electronic warfare and other electronic systems.gtri.gatech.edu/labs CTISLATAS #12;electronic Systems Laboratory (eLSYS) Joe Brooks, Laboratory Director www

  14. Safety analysis report for packaging (onsite) sample pig transport system

    SciTech Connect (OSTI)

    MCCOY, J.C.

    1999-03-16T23:59:59.000Z

    This Safety Analysis Report for Packaging (SARP) provides a technical evaluation of the Sample Pig Transport System as compared to the requirements of the U.S. Department of Energy, Richland Operations Office (RL) Order 5480.1, Change 1, Chapter III. The evaluation concludes that the package is acceptable for the onsite transport of Type B, fissile excepted radioactive materials when used in accordance with this document.

  15. PROCESS SYSTEMS ENGINEERING Discovery of Transport and Reaction

    E-Print Network [OSTI]

    Linninger, Andreas A.

    .interscience.wiley.com). In distributed systems, transport phenomena coupled with chemical or metabolic reac- tions are functions of space, which can often not be achieved in the real processes. Moreover, in many biological systems and safety, their extrapolation to larger reactor dimen- sions or different configuration can become unreliable. Parameter

  16. High Quantum Efficiency OLED Lighting Systems

    SciTech Connect (OSTI)

    Shiang, Joseph

    2011-09-30T23:59:59.000Z

    The overall goal of the program was to apply improvements in light outcoupling technology to a practical large area plastic luminaire, and thus enable the product vision of an extremely thin form factor high efficiency large area light source. The target substrate was plastic and the baseline device was operating at 35 LPW at the start of the program. The target LPW of the program was a >2x improvement in the LPW efficacy and the overall amount of light to be delivered was relatively high 900 lumens. Despite the extremely difficult challenges associated with scaling up a wet solution process on plastic substrates, the program was able to make substantial progress. A small molecule wet solution process was successfully implemented on plastic substrates with almost no loss in efficiency in transitioning from the laboratory scale glass to large area plastic substrates. By transitioning to a small molecule based process, the LPW entitlement increased from 35 LPW to 60 LPW. A further 10% improvement in outcoupling efficiency was demonstrated via the use of a highly reflecting cathode, which reduced absorptive loss in the OLED device. The calculated potential improvement in some cases is even larger, ~30%, and thus there is considerable room for optimism in improving the net light coupling efficacy, provided absorptive loss mechanisms are eliminated. Further improvements are possible if scattering schemes such as the silver nanowire based hard coat structure are fully developed. The wet coating processes were successfully scaled to large area plastic substrate and resulted in the construction of a 900 lumens luminaire device.

  17. Fabrication of catalyzed ion transport membrane systems

    DOE Patents [OSTI]

    Carolan, Michael Francis; Kibby, Charles Leonard

    2013-06-04T23:59:59.000Z

    Process for fabricating a catalyzed ion transport membrane (ITM). In one embodiment, an uncatalyzed ITM is (a) contacted with a non-reducing gaseous stream while heating to a temperature and for a time period sufficient to provide an ITM possessing anion mobility; (b) contacted with a reducing gaseous stream for a time period sufficient to provide an ITM having anion mobility and essentially constant oxygen stoichiometry; (c) cooled while contacting the ITM with the reducing gaseous stream to provide an ITM having essentially constant oxygen stoichiometry and no anion mobility; and (d) treated by applying catalyst to at least one of (1) a porous mixed conducting multicomponent metallic oxide (MCMO) layer contiguous with a first side of a dense layer of MCMO and (2) a second side of the dense MCMO layer. In another embodiment, these steps are carried out in the alternative order of (a), (d), (b), and (c).

  18. HVAC & Building Management Control System Energy Efficiency Replacements

    SciTech Connect (OSTI)

    Hernandez, Adriana

    2012-09-21T23:59:59.000Z

    The project objective was the replacement of an aging, un-repairable HVAC system which has grown inefficient and a huge energy consumer with low energy and efficient HVAC units, and installation of energy efficient building control technologies at City's YMCA Community Center.

  19. Engineering intracellular active transport systems as in vivo biomolecular tools.

    SciTech Connect (OSTI)

    Bachand, George David; Carroll-Portillo, Amanda

    2006-11-01T23:59:59.000Z

    Active transport systems provide essential functions in terms of cell physiology and metastasis. These systems, however, are also co-opted by invading viruses, enabling directed transport of the virus to and from the cell's nucleus (i.e., the site of virus replication). Based on this concept, fundamentally new approaches for interrogating and manipulating the inner workings of living cells may be achievable by co-opting Nature's active transport systems as an in vivo biomolecular tool. The overall goal of this project was to investigate the ability to engineer kinesin-based transport systems for in vivo applications, specifically the collection of effector proteins (e.g., transcriptional regulators) within single cells. In the first part of this project, a chimeric fusion protein consisting of kinesin and a single chain variable fragment (scFv) of an antibody was successfully produced through a recombinant expression system. The kinesin-scFv retained both catalytic and antigenic functionality, enabling selective capture and transport of target antigens. The incorporation of a rabbit IgG-specific scFv into the kinesin established a generalized system for functionalizing kinesin with a wide range of target-selective antibodies raised in rabbits. The second objective was to develop methods of isolating the intact microtubule network from live cells as a platform for evaluating kinesin-based transport within the cytoskeletal architecture of a cell. Successful isolation of intact microtubule networks from two distinct cell types was demonstrated using glutaraldehyde and methanol fixation methods. This work provides a platform for inferring the ability of kinesin-scFv to function in vivo, and may also serve as a three-dimensional scaffold for evaluating and exploiting kinesin-based transport for nanotechnological applications. Overall, the technology developed in this project represents a first-step in engineering active transport system for in vivo applications. Further development could potentially enable selective capture of intracellular antigens, targeted delivery of therapeutic agents, or disruption of the transport systems and consequently the infection and pathogenesis cycle of biothreat agents.

  20. Sustaining Operational Efficiency of a CHP System

    SciTech Connect (OSTI)

    Katipamula, Srinivas; Brambley, Michael R.

    2010-01-04T23:59:59.000Z

    This chapter provides background information on why sustaining operations of combined cooling, heating and power systems is important, provides the algorithms for CHP system performance monitoring and commissioning verification, and concludes with a discussion on how these algorithms can be deployed.

  1. Washington State Department of Transportation energy efficiency guidelines for small buildings

    SciTech Connect (OSTI)

    NONE

    1995-03-01T23:59:59.000Z

    This document provides energy efficiency guidelines for the construction and remodel of small buildings owned by the Washington State Department of Transportation (DOT). For the purpose of these guidelines {open_quotes}small buildings{close_quotes} are defined as those under 25,000 square feet. However, many of the guidelines can also be used for larger buildings. DOT is responsible for 641 buildings totaling 2.2 million square feet and consuming approximately $1,087,500 dollars in energy costs each year. Building types covered by these guidelines are small offices, shop buildings, and heated and unheated storage. These building types can be expected to vary greatly in both the distribution and magnitude of energy use.

  2. Graphene oxide hole transport layers for large area, high efficiency organic solar cells

    SciTech Connect (OSTI)

    Smith, Chris T. G.; Rhodes, Rhys W.; Beliatis, Michail J.; Imalka Jayawardena, K. D. G.; Rozanski, Lynn J.; Mills, Christopher A.; Silva, S. Ravi P., E-mail: s.silva@surrey.ac.uk [Advanced Technology Institute, University of Surrey, Guildford GU2 7XH (United Kingdom)

    2014-08-18T23:59:59.000Z

    Graphene oxide (GO) is becoming increasingly popular for organic electronic applications. We present large active area (0.64?cm{sup 2}), solution processable, poly[[9-(1-octylnonyl)-9H-carbazole-2,7-diyl]-2,5-thiophenediyl-2,1, 3-benzothiadiazole-4,7-diyl-2,5-thiophenediyl]:[6,6]-Phenyl C{sub 71} butyric acid methyl ester (PCDTBT:PC{sub 70}BM) organic photovoltaic (OPV) solar cells, incorporating GO hole transport layers (HTL). The power conversion efficiency (PCE) of ?5% is the highest reported for OPV using this architecture. A comparative study of solution-processable devices has been undertaken to benchmark GO OPV performance with poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) HTL devices, confirming the viability of GO devices, with comparable PCEs, suitable as high chemical and thermal stability replacements for PEDOT:PSS in OPV.

  3. Pulse thermal energy transport/storage system

    DOE Patents [OSTI]

    Weislogel, Mark M. (23133 Switzer Rd., Brookpark, OH 44142)

    1992-07-07T23:59:59.000Z

    A pulse-thermal pump having a novel fluid flow wherein heat admitted to a closed system raises the pressure in a closed evaporator chamber while another interconnected evaporator chamber remains open. This creates a large pressure differential, and at a predetermined pressure the closed evaporator is opened and the opened evaporator is closed. This difference in pressure initiates fluid flow in the system.

  4. Improved Combustion Efficiencies - Control Systems for Process Heaters and Boilers

    E-Print Network [OSTI]

    Varma, A. C.; Prengle, H. W.

    1979-01-01T23:59:59.000Z

    This paper presents the results of a study of the importance and applications of modern combustion control systems for retrofitting existing boilers and heaters to increase combustion efficiency. Conventional heater control and its deficiencies...

  5. Steam Power Partnership: Improving Steam System Efficiency Through Marketplace Partnerships

    E-Print Network [OSTI]

    Jones, T.

    The Alliance to Save Energy, a national nonprofit organization based in Washington DC, and the U.S. Department of Energy are working with energy efficiency suppliers to promote the comprehensive upgrade of industrial steam systems. Like EPA's Green...

  6. Energy-efficient system design for mobile processing platforms

    E-Print Network [OSTI]

    Rithe, Rahul (Rahulkumar Jagdish)

    2014-01-01T23:59:59.000Z

    Portable electronics has fueled the rich emergence of multimedia applications that have led to the exponential growth in content creation and consumption. New energy-efficient integrated circuits and systems are necessary ...

  7. Financing; A Cost Effective Alternative When Upgrading Energy Efficient Systems

    E-Print Network [OSTI]

    Ertle, J. M.

    in order to effectively compete in the marketplace. One obvious method of reducing costs and improving productivity is to upgrade old, antiquated equipment such as lighting to more modern energy efficient systems. Most projects provide a return...

  8. Feasibility study for a transportation operations system cask maintenance facility

    SciTech Connect (OSTI)

    Rennich, M.J.; Medley, L.G.; Attaway, C.R.

    1991-01-01T23:59:59.000Z

    The US Department of Energy (DOE), Office of Civilian Radioactive Waste Management (OCRWM) is responsible for the development of a waste management program for the disposition of spent nuclear fuel (SNF) and high-level waste (HLW). The program will include a transportation system for moving the nuclear waste from the sources to a geologic repository for permanent disposal. Specially designed casks will be used to safely transport the waste. The cask systems must be operated within limits imposed by DOE, the Nuclear Regulatory Commission (NRC), and the Department of Transportation (DOT). A dedicated facility for inspecting, testing, and maintaining the cask systems was recommended by the General Accounting Office (in 1979) as the best means of assuring their operational effectiveness and safety, as well as regulatory compliance. In November of 1987, OCRWM requested a feasibility study be made of a Cask Maintenance Facility (CMF) that would perform the required functions. 46 refs., 16 figs., 13 tabs.

  9. Tuning energy transport in solar thermal systems using nanostructured materials

    E-Print Network [OSTI]

    Lenert, Andrej

    2014-01-01T23:59:59.000Z

    Solar thermal energy conversion can harness the entire solar spectrum and theoretically achieve very high efficiencies while interfacing with thermal storage or back-up systems for dispatchable power generation. Nanostructured ...

  10. Improving Energy Efficiency for Energy Harvesting Embedded Systems*

    E-Print Network [OSTI]

    Qiu, Qinru

    Qiu {yage, yzhan158, qiqiu}@syr.edu EECS department, Syracuse University, New York, 13210, USAImproving Energy Efficiency for Energy Harvesting Embedded Systems* Yang Ge, Yukan Zhang and Qinru ABSTRACT While the energy harvesting system (EHS) supplies green energy to the embedded system, it also

  11. Efficient Transaction Support for Dynamic Information Retrieval Systems y

    E-Print Network [OSTI]

    Shenoy, Prashant

    with database management system (DBMS) features. However, initial research has revealed that DBMS features efficiency is critical in IR systems, infrastructural extensions are necessary for several DBMS features with database management system (DBMS) features [Fuh93, BCCM94, DDS + 95]. However, ini­ tial findings have

  12. Distributed Power Delivery for Energy Efficient and Low Power Systems

    E-Print Network [OSTI]

    Friedman, Eby G.

    Distributed Power Delivery for Energy Efficient and Low Power Systems Selc¸uk K¨ose Department throughout a power distribution system. Due to the parasitic impedances of the power distribution networks current to the load circuits [3]. The complexity of the high performance power delivery systems has

  13. Development of an analysis capability for the National Transportation System

    SciTech Connect (OSTI)

    Anson, D.; Nelson, R.

    1997-10-24T23:59:59.000Z

    The purpose of this report is to examine the Department of Transportation`s (DOT) National Transportation System (NTS) initiative, to document what has been learned, and to outline a National Transportation Network Analysis Capability (NTNAC) based on a ``TRANSIMS-like`` approach. This study was conducted over a two month period at the end of FY1997. The scope of the effort was carefully defined to accommodate the short time horizon and to provide focus to a very large analytical problem. The objectives were to: (1) define the NTS and the NTS problem; (2) identify problem characteristics; (3) describe an analytical solution based on the TRANSIMS approach; (4) identify data requirements and availability; (5) develop criteria for a scenario to be used in a prototype demonstration; and (6) select a scenario for the prototype demonstration.

  14. Improving Industrial Refrigeration System Efficiency - Actual Applications

    E-Print Network [OSTI]

    White, T. L.

    1980-01-01T23:59:59.000Z

    cycle cooling during winter operation, compressor intercooling, direct refrigeration vs. brine cooling, insulation of cold piping to reduce heat gain, multiple screw compressors for improved part load operation, evaporative condensers for reduced system...

  15. Corrosion-product transport in PWR secondary systems

    SciTech Connect (OSTI)

    Sawochka, S.G.; Copley, S.E.; Pearl, W.L.

    1981-12-01T23:59:59.000Z

    Corrosion product concentration data for the secondary systems of ten pressurized water reactors were obtained employing integrating sampling techniques. Based on these data, mass transport relations were developed for iron, copper, and nickel and employed to evaluate the effect of parameters such as blowdown, condensate polishing, operating pH and oxygen ingress on corrosion product transport and the buildup of sludge in steam generators. Several generic system designs were considered to illustrate application to plant design for the purpose of minimizing corrosion product input to generating equipment.

  16. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    SciTech Connect (OSTI)

    Hong, Tainzhen; Liu, Xaiobing

    2009-11-01T23:59:59.000Z

    With the current movement toward net zero energy buildings, many technologies are promoted with emphasis on their superior energy efficiency. The variable refrigerant flow (VRF) and ground source heat pump (GSHP) systems are probably the most competitive technologies among these. However, there are few studies reporting the energy efficiency of VRF systems compared with GSHP systems. In this article, a preliminary comparison of energy efficiency between the air-source VRF and GSHP systems is presented. The computer simulation results show that GSHP system is more energy efficient than the air-source VRF system for conditioning a small office building in two selected US climates. In general, GSHP system is more energy efficient than the air-source VRV system, especially when the building has significant heating loads. For buildings with less heating loads, the GSHP system could still perform better than the air-source VRF system in terms of energy efficiency, but the resulting energy savings may be marginal.

  17. Transportation Energy Futures Series: Freight Transportation Demand: Energy-Efficient Scenarios for a Low-Carbon Future

    SciTech Connect (OSTI)

    Grenzeback, L. R.; Brown, A.; Fischer, M. J.; Hutson, N.; Lamm, C. R.; Pei, Y. L.; Vimmerstedt, L.; Vyas, A. D.; Winebrake, J. J.

    2013-03-01T23:59:59.000Z

    Freight transportation demand is projected to grow to 27.5 billion tons in 2040, and to nearly 30.2 billion tons in 2050. This report describes the current and future demand for freight transportation in terms of tons and ton-miles of commodities moved by truck, rail, water, pipeline, and air freight carriers. It outlines the economic, logistics, transportation, and policy and regulatory factors that shape freight demand, the trends and 2050 outlook for these factors, and their anticipated effect on freight demand. After describing federal policy actions that could influence future freight demand, the report then summarizes the capabilities of available analytical models for forecasting freight demand. This is one in a series of reports produced as a result of the Transportation Energy Futures project, a Department of Energy-sponsored multi-agency effort to pinpoint underexplored strategies for reducing GHGs and petroleum dependence related to transportation.

  18. Secure and Efficient Routable Control Systems

    SciTech Connect (OSTI)

    Edgar, Thomas W.; Hadley, Mark D.; Manz, David O.; Winn, Jennifer D.

    2010-05-01T23:59:59.000Z

    This document provides the methods to secure routable control system communication in the electric sector. The approach of this document yields a long-term vision for a future of secure communication, while also providing near term steps and a roadmap. The requirements for the future secure control system environment were spelled out to provide a final target. Additionally a survey and evaluation of current protocols was used to determine if any existing technology could achieve this goal. In the end a four-step path was described that brought about increasing requirement completion and culminates in the realization of the long term vision.

  19. Energy Efficiency in Compressed Air Systems

    E-Print Network [OSTI]

    Hingorani, A.; Pavlov, A.

    2010-01-01T23:59:59.000Z

    Energy use in compressed air systems accounts for typically 10% of the total industrial electricity consumption. It also accounts for close to 99% of the CO2 footprint of an air compressor and approximately 80% of the life cycle costs of a...

  20. Transportation

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

    Transportation Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops Contact Us User Meeting Archives Users' Executive Committee Getting to Berkeley...

  1. Transportation

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

    Transportation Print Home Agenda Awards Exhibitors Lodging Posters Registration Transportation Workshops Contact Us User Meeting Archives Users' Executive Committee Getting to...

  2. Energy Efficiency of Distributed Environmental Control Systems

    SciTech Connect (OSTI)

    Khalifa, H. Ezzat; Isik, Can; Dannenhoffer, John F. III

    2011-02-23T23:59:59.000Z

    In this report, we present an analytical evaluation of the potential of occupant-regulated distributed environmental control systems (DECS) to enhance individual occupant thermal comfort in an office building with no increase, and possibly even a decrease in annual energy consumption. To this end we developed and applied several analytical models that allowed us to optimize comfort and energy consumption in partitioned office buildings equipped with either conventional central HVAC systems or occupant-regulated DECS. Our approach involved the following interrelated components: 1. Development of a simplified lumped-parameter thermal circuit model to compute the annual energy consumption. This was necessitated by the need to perform tens of thousands of optimization calculations involving different US climatic regions, and different occupant thermal preferences of a population of ~50 office occupants. Yearly transient simulations using TRNSYS, a time-dependent building energy modeling program, were run to determine the robustness of the simplified approach against time-dependent simulations. The simplified model predicts yearly energy consumption within approximately 0.6% of an equivalent transient simulation. Simulations of building energy usage were run for a wide variety of climatic regions and control scenarios, including traditional “one-size-fits-all” (OSFA) control; providing a uniform temperature to the entire building, and occupant-selected “have-it-your-way” (HIYW) control with a thermostat at each workstation. The thermal model shows that, un-optimized, DECS would lead to an increase in building energy consumption between 3-16% compared to the conventional approach depending on the climate regional and personal preferences of building occupants. Variations in building shape had little impact in the relative energy usage. 2. Development of a gradient-based optimization method to minimize energy consumption of DECS while keeping each occupant’s thermal dissatisfaction below a given threshold. The DECS energy usage was calculated using the simplified thermal model. OSFA control; providing a uniform temperature to the entire building, and occupant-selected HIYW control with a thermostat at each workstation were implemented for 3 cities representing 3 different climatic regions and control scenarios. It is shown that optimization allows DECS to deliver a higher level of individual and population thermal comfort while achieving annual energy savings between 14 and 26% compared to OSFA. The optimization model also allowed us to study the influence of the partitions’ thermal resistance and the variability of internal loads at each office. These influences didn’t make significant changes in the optimized energy consumption relative to OSFA. The results show that it is possible to provide thermal comfort for each occupant while saving energy compared to OSFA Furthermore, to simplify the implementation of this approach, a fuzzy logic system has been developed to generalize the overall optimization strategy. Its performance was almost as good as the gradient system. The fuzzy system provided thermal comfort to each occupant and saved energy compared to OSFA. The energy savings of the fuzzy system were not as high as for the gradient-optimized system, but the fuzzy system avoided complete connectivity, and the optimization did not have to be repeated for each population. 3. We employed a detailed CFD model of adjacent occupied cubicles to extend the thermal-circuit model in three significant ways: (a) relax the “office wall” requirement by allowing energy to flow between zones via advection as well as conduction, (b) improve the comfort model to account both for radiation as well as convection heat transfer, and (c) support ventilation systems in which the temperature is stratified, such as in underfloor air distribution systems. Initially, three-dimensional CFD simulations of several cubicle configurations, with an adjoining corridor, were performed both to understand the advection between cubicles and the

  3. Electric motor systems in developing countries: Opportunities for efficiency improvement

    SciTech Connect (OSTI)

    Meyers, S.; Monahan, P.; Lewis, P.; Greenberg, S. [Lawrence Berkeley Lab., CA (United States); Nadel, S. [American Council for an Energy-Efficient Economy, Washington, DC (United States)

    1993-08-01T23:59:59.000Z

    This report presents an overview of the current status and efficiency improvement potential of industrial motor systems in developing countries. Better management of electric motor systems is of particular relevance in developing countries, where improved efficiency can lead to increased productivity and slower growth in electricity demand. Motor systems currently consume some 65--80% of the industrial electricity in developing countries. Drawing on studies from Thailand, India, Brazil, China, Pakistan, and Costa Rica, we describe potential efficiency gains in various parts of the motor system, from the electricity delivery system through the motor to the point where useful work is performed. We report evidence of a significant electricity conservation potential. Most of the efficiency improvement methods we examine are very cost-effective from a societal viewpoint, but are generally not implemented due to various barriers that deter their adoption. Drawing on experiences in North America, we discuss a range of policies to overcome these barriers, including education, training, minimum efficiency standards, motor efficiency testing protocols, technical assistance programs, and financial incentives.

  4. NREL, CENTER FOR TRANSPORTATION TECHNOLOGIES AND SYSTEMS 1 Fuel Cell Vehicle Systems Analysis

    E-Print Network [OSTI]

    at 2003 Future Transportation Technology Conference 7/03* Expand database of fuel cell components 9NREL, CENTER FOR TRANSPORTATION TECHNOLOGIES AND SYSTEMS 1 Fuel Cell Vehicle Systems Analysis Tony Markel, Keith Wipke, Kristina Haraldsson, Ken Kelly, Andreas Vlahinos National Renewable Energy

  5. INTEGRATED ENERGY EFFICIENT WINDOW-WALL SYSTEMS

    SciTech Connect (OSTI)

    Michael Arney, Ph.D.

    2002-12-31T23:59:59.000Z

    The building industry faces the challenge of reducing energy use while simultaneously improving construction methods and marketability. This paper describes the first phase of a project to address these concerns by designing an Integrated Window Wall System (IWWS) that can be commercialized. This work builds on previous research conducted during the 1990's by Lawrence Berkeley national Laboratories (LBNL). During this phase, the objective was to identify appropriate technologies, problems and issues and develop a number of design concepts. Four design concepts were developed into prototypes and preliminary energy analyses were conducted Three of these concepts (the foam wall, steel wall, and stiffened plate designs) showed particular potential for meeting the project objectives and will be continued into a second phase where one or two of the systems will be brought closer to commercialization.

  6. High efficiency stoichiometric internal combustion engine system

    DOE Patents [OSTI]

    Winsor, Richard Edward (Waterloo, IA); Chase, Scott Allen (Cedar Falls, IA)

    2009-06-02T23:59:59.000Z

    A power system including a stoichiometric compression ignition engine in which a roots blower is positioned in the air intake for the engine to control air flow. Air flow is decreased during part power conditions to maintain the air-fuel ratio in the combustion chamber of the engine at stoichiometric, thus enabling the use of inexpensive three-way catalyst to reduce oxides of nitrogen. The roots blower is connected to a motor generator so that when air flow is reduced, electrical energy is stored which is made available either to the roots blower to temporarily increase air flow or to the system electrical load and thus recapture energy that would otherwise be lost in reducing air flow.

  7. NREL: Transportation Research - Systems Analysis and Integration

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for Renewable Energy: Grid IntegrationReportTransmissionResearchNews NRELSuccessSystems

  8. Energy Efficient Pump Control for an Offshore Oil Processing System

    E-Print Network [OSTI]

    Yang, Zhenyu

    Esbjerg, Denmark (e-mail: yang@et.aau.dk). Ramboll Oil and Gas A/S, Willemoesgade 2, DK-6700 Esbjerg control, energy saving 1. INTRODUCTION Pump systems have been extensively used in offshore oil & gas industries, for instance, in order to get the crude oil/gas out of reservoirs, transport the produced oil/gas

  9. System transition : dynamics of change in the US air transportation system

    E-Print Network [OSTI]

    Mozdzanowska, Aleksandra L. (Aleksandra Ludmila), 1979-

    2008-01-01T23:59:59.000Z

    The US Air Transportation System is currently facing a number of challenges including an increasing demand for travel and growing environmental requirements. In order to successfully meet future needs, the system will need ...

  10. Critical Behavior of the Thermoelectric Transport Properties in Amorphous Systems

    E-Print Network [OSTI]

    Chemnitz, Technische Universität

    Critical Behavior of the Thermoelectric Transport Properties in Amorphous Systems near the Metal., London SW7 2BZ, U.K. Abstract The scaling behavior of the thermoelectric trans- port properties;, the thermoelectric power S, the thermal conductivity K and the Lorenz number L0 obey scaling. The scaling description

  11. myCopter Enabling Technologies for Personal Aerial Transportation Systems

    E-Print Network [OSTI]

    towards a Personal Aerial Transportation System, in which vehicles would also have vertical space into account the required operational infrastructure, instead of starting with the design of a vehicle. By investigating human-machine interfaces and training, automation technologies, and socio-economic impact, the my

  12. A Survey on Trust Management for Intelligent Transportation System

    E-Print Network [OSTI]

    Wolfson, Ouri E.

    A Survey on Trust Management for Intelligent Transportation System Shuo Ma, Ouri Wolfson Department@uic.edu ABSTRACT Trust management is a fundamental and critical aspect of any serious application in ITS. However, only a few studies have addressed this important problem. In this paper, we present a survey on trust

  13. China's Urban Transportation System: Issues and Policies Facing Cities

    E-Print Network [OSTI]

    California at Berkeley, University of

    China's Urban Transportation System: Issues and Policies Facing Cities Chris Cherry WORKING PAPER UCB-ITS-VWP-2005-4 August 2005 #12;1 1. Introduction China is the most populous country in the world are on the forefront of the political and academic agenda in China and throughout the world. China has experienced

  14. Energy efficiency in wireless communication systems

    DOE Patents [OSTI]

    Caffrey, Michael Paul; Palmer, Joseph McRae

    2012-12-11T23:59:59.000Z

    Wireless communication systems and methods utilize one or more remote terminals, one or more base terminals, and a communication channel between the remote terminal(s) and base terminal(s). The remote terminal applies a direct sequence spreading code to a data signal at a spreading factor to provide a direct sequence spread spectrum (DSSS) signal. The DSSS signal is transmitted over the communication channel to the base terminal which can be configured to despread the received DSSS signal by a spreading factor matching the spreading factor utilized to spread the data signal. The remote terminal and base terminal can dynamically vary the matching spreading factors to adjust the data rate based on an estimation of operating quality over time between the remote terminal and base terminal such that the amount of data being transmitted is substantially maximized while providing a specified quality of service.

  15. Radioisotope thermoelectric generator transportation system subsystem 143 software development plan

    SciTech Connect (OSTI)

    King, D.A.

    1994-11-10T23:59:59.000Z

    This plan describes the activities to be performed and the controls to be applied to the process of specifying, developing, and qualifying the data acquisition software for the Radioisotope Thermoelectric Generator (RTG) Transportation System Subsystem 143 Instrumentation and Data Acquisition System (IDAS). This plan will serve as a software quality assurance plan, a verification and validation (V and V) plan, and a configuration management plan.

  16. Microcomputer-based information feedback system for improving tractor efficiency

    E-Print Network [OSTI]

    Grogan, Joseph

    1985-01-01T23:59:59.000Z

    ) used a gear oontrol system based on a customized version of the Motorola 6800 microprocessor. When used with heavy duty automatic transmissions in trucks and off highway equipment, improvements were seen in fuel efficiency, performanoe, reliability... in oil prices over the past deoade sparked more interest in determining tractor efficiency and in exploring ways to improve fuel economy. During the same time period, explosive growth in the eleotronics industry has made available very compact...

  17. Packaging and transportation system for K-Basin spent fuel

    SciTech Connect (OSTI)

    Kee, A.T.

    1998-03-03T23:59:59.000Z

    This paper describes the cask/transportation system that was designed, procured and delivered to the Hanford K-Basin site at Richland, Washington. The performance requirements and design of the various components -- cask, trailer with cask tie-down system, and the cask operation equipment for the load-out pit -- will be discussed. The presentation will include the details of the factory acceptance testing and its results. The performance requirements for the cask/transportation system was dictated by the constraints imposed by the large number of high priority shipments and the spent fuel pool environment, and the complex interface requirements with other equipment and facility designs. The results of the testing form the basis for the conclusion that the system satisfies the site performance requirements. The cask/transportation system design was driven by the existing facility constraints and the limitations imposed by the large number of shipments over a short two-year period. This system may be useful information for other DOE facilities that may be or will be in a similar situation.

  18. An overview of the Radioisotope Thermoelectric Generator Transportation System Program

    SciTech Connect (OSTI)

    McCoy, J.C.; Becker, D.L. [Westinghouse Hanford Company, P.O. Box 1970, Richland, Washington 99352 (United States)

    1996-03-01T23:59:59.000Z

    Radioisotope Thermoelectric Generators (RTG) convert the heat generated by radioactive decay to electricity using thermocouples. RTGs have a long operating life, are reasonably lightweight, and require little or no maintenance once assembled and tested. These factors make RTGs particularly attractive for use in spacecraft. However, because RTGs contain significant quantities of radioactive materials, normally plutonium-238 and its decay products, they must be transported in packages built in accordance with Title 10, Code of Federal Regulations, Part 71. The U.S. Department of Energy assigned the Radioisotope Thermoelectric Generator Transportation System (RTGTS) Program to Westinghouse Hanford Company in 1988 to develop a system meeting the regulatory requirements. The program objective was to develop a transportation system that would fully comply with 10 CFR 71 while protecting RTGs from adverse environmental conditions during normal conditions of transport (e.g., shock and heat). The RTGTS is scheduled for completion in December 1996 and will be available to support the National Aeronautics and Space Administration{close_quote}s Cassini mission to Saturn in October 1997. This paper provides an overview of the RTGTS and discusses the hardware being produced. Additionally, various program management innovations mandated by recent major changes in the U.S. Department of Energy structure and resources will be outlined. {copyright} {ital 1996 American Institute of Physics.}

  19. A High Efficiency PSOFC/ATS-Gas Turbine Power System

    SciTech Connect (OSTI)

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

    2001-02-01T23:59:59.000Z

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

  20. Satellite Power Systems (SPS) space transportation cost analysis and evaluation

    SciTech Connect (OSTI)

    None

    1980-11-01T23:59:59.000Z

    The objective of this study is to provide a clear picture of SPS space transportation costs at the present time with respect to their accuracy as stated, the reasonableness of the methods used, the assumptions made, and the uncertainty associated with the estimates. The approach used consists of examining space transportation costs from several perspectives - to perform a variety of sensitivity analyses or reviews and examine the findings in terms of internal consistency and external comparison with analogous systems. These approaches are summarized as a theoretical and historical review including a review of stated and unstated assumptions used to derive the costs, and a performance or technical review. These reviews cover the overall transportation program as well as the individual vehicles proposed. The review of overall cost assumptions is the principal means used for estimating the cost uncertainty derived. The cost estimates used as the best current estimate are included.

  1. A MultiAir / MultiFuel Approach to Enhancing Engine System Efficiency...

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

    to Enhancing Engine System Efficiency A MultiAir MultiFuel Approach to Enhancing Engine System Efficiency 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies...

  2. Screening study on high temperature energy transport systems

    SciTech Connect (OSTI)

    Graves, R.L.

    1980-10-01T23:59:59.000Z

    The purpose of the study described in this document is to identify the options for transporting thermal energy over long distances. The study deals specifically and exclusively with high temperature (> 400/sup 0/C(752/sup 0/F)) energy for industrial use. Energy transport is seen as a potential solution to: high unit cost of small coal and nuclear steam generators, and opposition to siting of coal or nuclear plants near populated areas. The study is of a preliminary nature but covers many options including steam, molten salts, organics, and chemical heat pipes. The development status and potential problems of these and other energy transport methods are discussed. Energy transport concepts are compared on a fundamental level based on physical properties and also are subjected to an economic study. The economic study indicated that the chemical heat pipe, under a specific set of circumstances, appeared to be the least expensive for distances greater than about 32 km (20 miles). However, if the temperature of the energy was lowered, the heat transfer salt (sodium nitrate/nitrite) system would apparently be a better economic choice for less than about 80 km (50 miles). None of the options studied appear to be more attractive than small coal-fired boilers when the transport distance is over about 64 km (40 miles). Several recommendations are made for refining the analysis.

  3. Lubbock Metropolitan Transportation Plan

    E-Print Network [OSTI]

    Lubbock Metropolitan Planning Organization

    2007-09-18T23:59:59.000Z

    for Users (SAFETEA-LU) and its predecessors, the Transportation Equity Act for the 21st Century (TEA-21) and the Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991, specified the transportation systems on which certain federal funds can... in Chapter 5 ? Streets and Highways; Chapter 6 ? Public Transportation; Chapter 7 ? Bicycle and Pedestrian Plan; Chapter 8 ? Lubbock International Airport and Chapter 9 ? Railroads and Trucking. Federally funded transit projects were developed...

  4. Transportation Sector Model of the National Energy Modeling System. Volume 1

    SciTech Connect (OSTI)

    NONE

    1998-01-01T23:59:59.000Z

    This report documents the objectives, analytical approach and development of the National Energy Modeling System (NEMS) Transportation Model (TRAN). The report catalogues and describes the model assumptions, computational methodology, parameter estimation techniques, model source code, and forecast results generated by the model. The NEMS Transportation Model comprises a series of semi-independent models which address different aspects of the transportation sector. The primary purpose of this model is to provide mid-term forecasts of transportation energy demand by fuel type including, but not limited to, motor gasoline, distillate, jet fuel, and alternative fuels (such as CNG) not commonly associated with transportation. The current NEMS forecast horizon extends to the year 2010 and uses 1990 as the base year. Forecasts are generated through the separate consideration of energy consumption within the various modes of transport, including: private and fleet light-duty vehicles; aircraft; marine, rail, and truck freight; and various modes with minor overall impacts, such as mass transit and recreational boating. This approach is useful in assessing the impacts of policy initiatives, legislative mandates which affect individual modes of travel, and technological developments. The model also provides forecasts of selected intermediate values which are generated in order to determine energy consumption. These elements include estimates of passenger travel demand by automobile, air, or mass transit; estimates of the efficiency with which that demand is met; projections of vehicle stocks and the penetration of new technologies; and estimates of the demand for freight transport which are linked to forecasts of industrial output. Following the estimation of energy demand, TRAN produces forecasts of vehicular emissions of the following pollutants by source: oxides of sulfur, oxides of nitrogen, total carbon, carbon dioxide, carbon monoxide, and volatile organic compounds.

  5. 1.212J / ESD.221J An Introduction to Intelligent Transportation Systems, Spring 2003

    E-Print Network [OSTI]

    Sussman, Joseph

    Basic elements of intelligent transportation systems. Technological, systems, and institutional aspects of ITS considered, including system architecture, congestion pricing, public/private partnerships, network models, ITS ...

  6. HIGH EFFICIENCY, LOW EMISSIONS, SOLID OXIDE FUEL CELL SYSTEMS FOR MULTIPLE APPLICATIONS

    SciTech Connect (OSTI)

    Sara Ward; Michael A. Petrik

    2004-07-28T23:59:59.000Z

    Technology Management Inc. (TMI), teamed with the Ohio Office of Energy Efficiency and Renewable Energy, has engineered, constructed, and demonstrated a stationary, low power, multi-module solid oxide fuel cell (SOFC) prototype system operating on propane and natural gas. Under Phase I, TMI successfully operated two systems in parallel, in conjunction with a single DC-AC inverter and battery bus, and produced net AC electricity. Phase II testing expanded to include alternative and renewable fuels typically available in rural regions of Ohio. The commercial system is expected to have ultra-low pollution, high efficiency, and low noise. The TMI SOFC uses a solid ceramic electrolyte operating at high temperature (800-1000 C) which electrochemically converts gaseous fuels (hydrogen or mixed gases) and oxygen into electricity. The TMI system design oxidizes fuel primarily via electrochemical reactions and uses no burners (which pollute and consume fuel)--resulting in extremely clean exhaust. The use of proprietary sulfur tolerant materials developed by TMI allows system operation without additional fuel pre-processing or sulfur removal. Further, the combination of high operating temperatures and solid state operation increases the potential for higher reliability and efficiencies compared to other types of fuel cells. Applications for the TMI SOFC system cover a wide range of transportation, building, industrial, and military market sectors. A generic technology, fuel cells have the potential to be embodied into multiple products specific to Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) program areas including: Fuel Cells and Microturbines, School Buildings, Transportation, and Bioenergy. This program focused on low power stationary applications using a multi-module system operating on a range of common fuels. By producing clean electricity more efficiently (thus using less fuel), fuel cells have the triple effect of cleaning up the environment, reducing the amount of fuel consumed and, for energy intensive manufacturers, boosting their profits (by reducing energy expenses). Compared to conventional power generation technologies such as internal combustion engines, gas turbines, and coal plants, fuel cells are extremely clean and more efficient, particularly at smaller scales.

  7. Transportation

    E-Print Network [OSTI]

    Vinson, Steve

    2013-01-01T23:59:59.000Z

    Transportation in ancient Egypt entailed the use of boats2007 Land transport in Roman Egypt: A study of economics andDieter 1991 Building in Egypt: Pharaonic stone masonry. New

  8. Bus Rapid Transit (BRT): An Efficient and Competitive Mode of Public Transport

    E-Print Network [OSTI]

    Cervero, Robert

    2013-01-01T23:59:59.000Z

    Towards  a  smart  future  for  cities:  urban  transport  Despite  compact-­?city  and  smart-­?growth  initiatives,  

  9. System-of-Systems Framework for the Future Hydrogen-Based Transportation Economy: Preprint

    SciTech Connect (OSTI)

    Duffy, M.; Sandor, D.

    2008-06-01T23:59:59.000Z

    From a supply chain view, this paper traces the flow of transportation fuels through required systems and addresses the current petroleum-based economy, DOE's vision for a future hydrogen-based transportation economy, and the challenges of a massive market and infrastructure transformation.

  10. Sustainable Transportation, Continuum Magazine, Fall 2013 / Issue...

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

    a sustainable transportation system-from developing more efficient electric and hydrogen fuel-cell vehicles to inventing technologies and processes for producing biofuel...

  11. Air quality and Intelligent Transportation Systems : understanding Integrated Innovation, Deployment and Adaptation of Public Technologies

    E-Print Network [OSTI]

    Dodder, Rebecca Susanne

    2006-01-01T23:59:59.000Z

    During the past two decades, Intelligent Transportation Systems (ITS) have provided transportation organizations with increasingly advanced tools both to operate and manage systems in real-time. At the same time, federal ...

  12. Transportation Routing Analysis Geographic Information System (TRAGIS) User's Manual

    SciTech Connect (OSTI)

    Johnson, PE

    2003-09-18T23:59:59.000Z

    The Transportation Routing Analysis Geographic Information System (TRAGIS) model is used to calculate highway, rail, or waterway routes within the United States. TRAGIS is a client-server application with the user interface and map data files residing on the user's personal computer and the routing engine and network data files on a network server. The user's manual provides documentation on installation and the use of the many features of the model.

  13. Cost Analysis of Fuel Cell Systems for Transportation Compressed Hydrogen and PEM Fuel Cell System

    SciTech Connect (OSTI)

    Eric J. Carlson

    2004-10-20T23:59:59.000Z

    PEMFC technology for transportation must be competitive with internal combustion engine powertrains in a number of key metrics, including performance, life, reliability, and cost. Demonstration of PEMFC cost competitiveness has its own challenges because the technology has not been applied to high volume automotive markets. The key stack materials including membranes, electrodes, bipolar plates, and gas diffusion layers have not been produced in automotive volumes to the exacting quality requirements that will be needed for high stack yields and to the evolving property specifications of high performance automotive stacks. Additionally, balance-of-plant components for air, water, and thermal management are being developed to meet the unique requirements of fuel cell systems. To address the question of whether fuel cells will be cost competitive in automotive markets, the DOE has funded this project to assess the high volume production cost of PEM fuel cell systems. In this report a historical perspective of our efforts in assessment of PEMFC cost for DOE is provided along with a more in-depth assessment of the cost of compressed hydrogen storage is provided. Additionally, the hydrogen storage costs were incorporated into a system cost update for 2004. Assessment of cost involves understanding not only material and production costs, but also critical performance metrics, i.e., stack power density and associated catalyst loadings that scale the system components. We will discuss the factors influencing the selection of the system specification (i.e., efficiency, reformate versus direct hydrogen, and power output) and how these have evolved over time. The reported costs reflect internal estimates and feedback from component developers and the car companies. Uncertainty in the cost projection was addressed through sensitivity analyses.

  14. Efficient Power Control for Broadcast in Wireless Communication Systems

    E-Print Network [OSTI]

    Chronopoulos, Anthony T.

    Efficient Power Control for Broadcast in Wireless Communication Systems A. T. Chronopoulos Computer. Therefore, controlling the transmitter power at a given node increases not only the operating life and a destination. It is essential to find effective means of power control of point-to-point, broadcasting

  15. USDA Renewable Energy Systems and Energy Efficiency Improvement Grants

    Broader source: Energy.gov [DOE]

    USDA's Rural Business Cooperative-Service Agency, under the Rural Energy for America Program, is accepting applications for Renewable Energy Systems and Energy Efficiency Improvement grants of $20,000 or less to establish programs to assist agricultural producers and rural small businesses with evaluating the potential to incorporate renewable energy technologies into their operations.

  16. Energy Efficient Deadline Scheduling in Two Processor Systems

    E-Print Network [OSTI]

    Wong, Prudence W.H.

    Energy Efficient Deadline Scheduling in Two Processor Systems Tak-Wah Lam1 , Lap-Kei Lee1 , Isaac K manage its energy usage by scaling dynamically its speed. In this paper we attempt to extend such work energy. The motivation comes from the fact that dual-core processors are get- ting common nowadays. Our

  17. Efficient Low Complexity Power Allocation Policies for Wireless Communication Systems

    E-Print Network [OSTI]

    Sharma, Vinod

    . Other benefits will be smaller diesel generators and batteries with longer life time. Thus, one of the primary challenges for Next Generation Networks (NGN) is to reduce energy consumption. In a BS the powerEfficient Low Complexity Power Allocation Policies for Wireless Communication Systems Guaranteeing

  18. High Efficiency Energy Conversion Systems for Liquid Nitrogen Automobiles

    E-Print Network [OSTI]

    Laughlin, Robert B.

    energy storage, particularly lead-acid and Ni-Cd batteries. These heavy metal energy storage systems-hr/kg for gasoline combusted in an engine running at 28% thermal efficiency. Lead-acid batteries can take hours replacements over the lifetime of the vehicle raises the specter of increased heavy metal pollution, were lead-acid

  19. NREL showcase solar systems and energy efficient design

    SciTech Connect (OSTI)

    NONE

    1995-12-31T23:59:59.000Z

    THe Thermal Test Facility at NREL, which should be completed in the summer of 1996, will incorporate natural lighting from clerestories and may other solar and energy-efficiency features; roof-mounted solar collectors, which will be monitored as part of NREL`s work on active solar systems, will help to heat water and interior spaces in the building.

  20. Energy-Efficient Resource Allocation for Multiband UWB Communication Systems

    E-Print Network [OSTI]

    Liu, K. J. Ray

    Energy-Efficient Resource Allocation for Multiband UWB Communication Systems W. Pam Siriwongpairat, Zhu Han, and K. J. Ray Liu, Department of Electrical and Computer Engineering and Institute of power consumption under the constraints on the packet error rate, transmission rate, and FCC regulations

  1. Intelligent Transportation Systems: Saving Lives, Time and Money Portland State University

    E-Print Network [OSTI]

    Bertini, Robert L.

    Intelligent Transportation Systems: Saving Lives, Time and Money Portland State University Oct 14, 2009 #12;Intelligent Transportation Systems: Saving Lives, Time and Money James Whiteneck #12;Intelligent Transportation Systems: Saving Lives, Time and Money Portal archives a large amount of data Over

  2. 1Intelligent Transportation Systems: Saving Lives, Time and Money PORTAL Advisory Committee

    E-Print Network [OSTI]

    Bertini, Robert L.

    1Intelligent Transportation Systems: Saving Lives, Time and Money PORTAL Advisory Committee Initial Meeting January 22, 2009 #12;2Intelligent Transportation Systems: Saving Lives, Time and Money Agenda 9:00 Adjourn #12;3Intelligent Transportation Systems: Saving Lives, Time and Money What's in the PORTAL

  3. Biological optimization systems for enhancing photosynthetic efficiency and methods of use

    DOE Patents [OSTI]

    Hunt, Ryan W; Chinnasamy, Senthil; Das, Keshav C; Rolim de Mattos, Erico

    2014-02-25T23:59:59.000Z

    The present disclosure relates to biological optimization systems for enhancing photosynthetic efficiency and methods of use.

  4. Optimizing the National TRU waste system transportation program.

    SciTech Connect (OSTI)

    Lott, S. A. (Sheila A.); Countiss, S. (Sue)

    2002-01-01T23:59:59.000Z

    The goal of the National TRU Waste Program (NTP) is to operate the system safely and cost-effectively, in compliance with applicable regulations and agreements, and at full capacity in a fully integrated mode. One of the objectives of the Department of Energy's Carlsbad Field Office (DOE/CBFO) is to complete the current Waste Isolation Pilot Plant (WIPP) mission for the disposal of the nation's legacy transuranic (TRU) waste at least IO years earlier thus saving approximately %7B. The National TRU Waste Optimization Plan (1) recommends changes to accomplish this. This paper discusses the optimization of the National TRU Waste System Transportation Program.

  5. Ligncellulosic feedstock supply systems with intermodal and overseas transportation

    SciTech Connect (OSTI)

    Ric Hoefnagels; Kara Cafferty; Erin Searcy; Jacob J. Jacobson; Martin Junginger; Thijs Cornelissen; Andre Faaij

    2014-12-01T23:59:59.000Z

    With growing demand for biomass from industrial uses and international trade, the logistic operations required to economically move the biomass from the field or forest to the end users have become increasingly complex. In addition to economics, understanding energy and GHG emissions is required to design cost effective, sustainable logistic process operations; in order to improve international supply chains it is also important to understate their interdependencies and related uncertainties. This article presents an approach to assess lignocellulosic feedstock supply systems at the operational level. For this purpose, the Biomass Logistic Model (BLM) has been linked with the Geographic Information Systems based Biomass Intermodal Transportation model (BIT-UU) and extended with inter-continental transport routes. Case studies of herbaceous and woody biomass, produced in the U.S. Midwest and U.S. Southeast, respectively, and shipped to Europe for conversion to Fischer-Tropsch (FT) diesel are included to demonstrate how intermodal transportation and, in particular, overseas shipping integrates with the bioenergy supply chains. For the cases demonstrated, biomass can be supplied at 99 € Mg-1 to 117 € Mg-1 (dry) and converted to FT-diesel at 19 € GJ-1 to 24 € GJ-1 depending on the feedstock type and location, intermediate (chips or pellets) and size of the FT-diesel production plant. With the flexibility to change the design of supply chains as well as input variables, many alternative supply chain cases can be assessed.

  6. StationaryEnvironment ResidentialTransportation Premium Power Advanced High Efficiency, Quick Start Fuel

    E-Print Network [OSTI]

    Premium Power Agenda STARTM (1999-2003) ­ Substrate based Transportation application Autothermal ReformerEnvironment Residential Stationary Premium Power STAR Fuel Processor · Autothermal reformer · Substrate-based catalysts

  7. Feed gas contaminant control in ion transport membrane systems

    DOE Patents [OSTI]

    Carolan, Michael Francis (Allentown, PA); Minford, Eric (Laurys Station, PA); Waldron, William Emil (Whitehall, PA)

    2009-07-07T23:59:59.000Z

    Ion transport membrane oxidation system comprising an enclosure having an interior and an interior surface, inlet piping having an internal surface and adapted to introduce a heated feed gas into the interior of the enclosure, and outlet piping adapted to withdraw a product gas from the interior of the enclosure; one or more planar ion transport membrane modules disposed in the interior of the enclosure, each membrane module comprising mixed metal oxide material; and a preheater adapted to heat a feed gas to provide the heated feed gas to the inlet piping, wherein the preheater comprises an interior surface. Any of the interior surfaces of the enclosure, the inlet piping, and the preheater may be lined with a copper-containing metal lining. Alternatively, any of the interior surfaces of the inlet piping and the preheater may be lined with a copper-containing metal lining and the enclosure may comprise copper.

  8. Energy-Efficient Building HVAC Control Using Hybrid System LBMPC

    E-Print Network [OSTI]

    Aswani, Anil; Taneja, Jay; Krioukov, Andrew; Culler, David; Tomlin, Claire

    2012-01-01T23:59:59.000Z

    Improving the energy-efficiency of heating, ventilation, and air-conditioning (HVAC) systems has the potential to realize large economic and societal benefits. This paper concerns the system identification of a hybrid system model of a building-wide HVAC system and its subsequent control using a hybrid system formulation of learning-based model predictive control (LBMPC). Here, the learning refers to model updates to the hybrid system model that incorporate the heating effects due to occupancy, solar effects, outside air temperature (OAT), and equipment, in addition to integrator dynamics inherently present in low-level control. Though we make significant modeling simplifications, our corresponding controller that uses this model is able to experimentally achieve a large reduction in energy usage without any degradations in occupant comfort. It is in this way that we justify the modeling simplifications that we have made. We conclude by presenting results from experiments on our building HVAC testbed, which s...

  9. Radioisotope thermoelectric generator transportation system safety analysis report for packaging. Volumes 1 and 2

    SciTech Connect (OSTI)

    Ferrell, P.C.

    1996-04-18T23:59:59.000Z

    This SARP describes the RTG Transportation System Package, a Type B(U) packaging system that is used to transport an RTG or similar payload. The payload, which is included in this SARP, is a generic, enveloping payload that specifically encompasses the General Purpose Heat Source (GPHS) RTG payload. The package consists of two independent containment systems mounted on a shock isolation transport skid and transported within an exclusive-use trailer.

  10. Implementation and Rejection of Industrial Steam System Energy Efficiency Measures

    SciTech Connect (OSTI)

    Therkelesen, Peter; McKane, Aimee

    2013-05-01T23:59:59.000Z

    Steam systems consume approximately one third of energy applied at U.S. industrial facilities. To reduce energy consumption, steam system energy assessments have been conducted on a wide range of industry types over the course of five years through the Energy Savings Assessment (ESA) program administered by the U.S. Department of Energy (U.S. DOE). ESA energy assessments result in energy efficiency measure recommendations that are given potential energy and energy cost savings and potential implementation cost values. Saving and cost metrics that measure the impact recommended measures will have at facilities, described as percentages of facility baseline energy and energy cost, are developed from ESA data and used in analyses. Developed savings and cost metrics are examined along with implementation and rejection rates of recommended steam system energy efficiency measures. Based on analyses, implementation of steam system energy efficiency measures is driven primarily by cost metrics: payback period and measure implementation cost as a percentage of facility baseline energy cost (implementation cost percentage). Stated reasons for rejecting recommended measures are primarily based upon economic concerns. Additionally, implementation rates of measures are not only functions of savings and cost metrics, but time as well.

  11. Real-time monitoring during transportation of a radioisotope thermoelectric generator (RTG) using the radioisotope thermoelectric generator transportation system (RTGTS)

    SciTech Connect (OSTI)

    Pugh, Barry K. [EG and G Mound Applied Technologies P.O. Box 3000 Miamisburg, Ohio 45343-3000 (United States)

    1997-01-10T23:59:59.000Z

    The Radioisotopic Thermoelectric Generators (RTGs) that will be used to support the Cassini mission will be transported in the Radioisotope Thermoelectric Generator Transportation System (RTGTS). To ensure that the RTGs will not be affected during transportation, all parameters that could adversely affect RTG's performance must be monitored. The Instrumentation and Data Acquisition System (IDAS) for the RTGTS displays, monitors, and records all critical packaging and trailer system parameters. The IDAS also monitors the package temperature control system, RTG package shock and vibration data, and diesel fuel levels for the diesel fuel tanks. The IDAS alarms if any of these parameters reach an out-of-limit condition. This paper discusses the real-time monitoring during transportation of the Cassini RTGs using the RTGTS IDAS.

  12. Real-time monitoring during transportation of a radioisotope thermoelectric generator (RTG) using the radioisotope thermoelectric generator transportation system (RTGTS)

    SciTech Connect (OSTI)

    Pugh, B.K. [EGG Mound Applied Technologies P.O. Box 3000 Miamisburg, Ohio45343-3000 (United States)

    1997-01-01T23:59:59.000Z

    The Radioisotopic Thermoelectric Generators (RTGs) that will be used to support the Cassini mission will be transported in the Radioisotope Thermoelectric Generator Transportation System (RTGTS). To ensure that the RTGs will not be affected during transportation, all parameters that could adversely affect RTG{close_quote}s performance must be monitored. The Instrumentation and Data Acquisition System (IDAS) for the RTGTS displays, monitors, and records all critical packaging and trailer system parameters. The IDAS also monitors the package temperature control system, RTG package shock and vibration data, and diesel fuel levels for the diesel fuel tanks. The IDAS alarms if any of these parameters reach an out-of-limit condition. This paper discusses the real-time monitoring during transportation of the Cassini RTGs using the RTGTS IDAS. {copyright} {ital 1997 American Institute of Physics.}

  13. An Energy-Efficient Framework for Large-Scale Parallel Storage Systems

    E-Print Network [OSTI]

    Qin, Xiao

    An Energy-Efficient Framework for Large-Scale Parallel Storage Systems Ziliang Zong, Matt Briggs-scale and energy-efficient parallel storage systems. To validate the efficiency of the proposed framework, a buffer that this new framework can significantly improves the energy efficiency of large-scale parallel storage systems

  14. CPT: An Energy-Efficiency Model for Multi-core Computer Systems

    E-Print Network [OSTI]

    Shi, Weisong

    CPT: An Energy-Efficiency Model for Multi-core Computer Systems Weisong Shi, Shinan Wang and Bing efficiency of computer systems. These techniques affect the energy efficiency across different layers metric that represents the energy efficiency of a computer system, for a specific configuration, given

  15. The Potential for Energy-Efficient Technologies to Reduce Carbon Emissions in the United States: Transport Sector

    SciTech Connect (OSTI)

    Greene, D.L.

    1997-07-01T23:59:59.000Z

    The world is searching for a meaningful answer to the likelihood that the continued build-up of greenhouse gases in the atmosphere will cause significant changes in the earth`s climate. If there is to be a solution, technology must play a central role. This paper presents the results of an assessment of the potential for cost-effective technological changes to reduce greenhouse gas emissions from the U.S. transportation sector by the year 2010. Other papers in this session address the same topic for buildings and industry. U.S.transportation energy use stood at 24.4 quadrillion Btu (Quads) in 1996, up 2 percent over 1995 (U.S. DOE/EIA, 1997, table 2.5). Transportation sector carbon dioxide emissions amounted to 457.2 million metric tons of carbon (MmtC) in 1995, almost one third of total U.S. greenhouse gas emissions (U.S. DOE/EIA,1996a, p. 12). Transport`s energy use and CO{sub 2} emissions are growing, apparently at accelerating rates as energy efficiency improvements appear to be slowing to a halt. Cost-effective and nearly cost-effective technologies have enormous potential to slow and even reverse the growth of transport`s CO{sub 2} emissions, but technological changes will take time and are not likely to occur without significant, new public policy initiatives. Absent new initiatives, we project that CO{sub 2} emissions from transport are likely to grow to 616 MmtC by 2010, and 646 MmtC by 2015. An aggressive effort to develop and implement cost-effective technologies that are more efficient and fuels that are lower in carbon could reduce emissions by about 12% in 2010 and 18% in 2015, versus the business-as- usual projection. With substantial luck, leading to breakthroughs in key areas, reductions over the BAU case of 17% in 2010 and 25% in 2015,might be possible. In none of these case are CO{sub 2} emissions reduced to 1990 levels by 2015.

  16. Multicomponent Transport of Sulfate in a Goethite-Silica Sand System

    E-Print Network [OSTI]

    Sparks, Donald L.

    Multicomponent Transport of Sulfate in a Goethite-Silica Sand System at Variable pH and Ionic of protons and sulfate on goethite and silica were used in combination with a one-dimensional mass-transport model to predict the transport of sulfate at variable pH and ionic strength in a goethite-silica system

  17. An artificial neural network controller for intelligent transportation systems applications

    SciTech Connect (OSTI)

    Vitela, J.E.; Hanebutte, U.R.; Reifman, J. [Argonne National Lab., IL (United States). Reactor Analysis Div.

    1996-04-01T23:59:59.000Z

    An Autonomous Intelligent Cruise Control (AICC) has been designed using a feedforward artificial neural network, as an example for utilizing artificial neural networks for nonlinear control problems arising in intelligent transportation systems applications. The AICC is based on a simple nonlinear model of the vehicle dynamics. A Neural Network Controller (NNC) code developed at Argonne National Laboratory to control discrete dynamical systems was used for this purpose. In order to test the NNC, an AICC-simulator containing graphical displays was developed for a system of two vehicles driving in a single lane. Two simulation cases are shown, one involving a lead vehicle with constant velocity and the other a lead vehicle with varying acceleration. More realistic vehicle dynamic models will be considered in future work.

  18. Research Statement of Hamsa Balakrishnan The air transportation system is a large, complex, global system that transports over 2.1 billion

    E-Print Network [OSTI]

    Research Statement of Hamsa Balakrishnan The air transportation system is a large, complex, global system that transports over 2.1 billion passengers each year. Air traffic delays have become a huge to the Joint Economic Committee of the US Senate, domestic air traffic delays in 2007 cost airlines over $19

  19. Research Statement of Hamsa Balakrishnan The air transportation system is a complex, global system that transports over 2.1 billion

    E-Print Network [OSTI]

    Gummadi, Ramakrishna

    is important because of the high costs of delays and pollution today, as well as the projected doubling in airResearch Statement of Hamsa Balakrishnan The air transportation system is a complex, global system that transports over 2.1 billion passengers each year. Air traffic delays have become a huge problem

  20. Energy Efficiency & Renewable Energy

    E-Print Network [OSTI]

    Transportation Benefits · Efficiencies can be 60% (electrical) and 85% (with CHP) · > 90% reduction in criteria's portfolio of transportation technologies will reduce emissions of greenhouse gases and oil consumption. DOE levels--by 2050. Key Findings Include: Estimated Government Cost to Support a Transition to FCVs Systems

  1. Test for Pumping System Efficiency | 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 onYouTube YouTube Note: Since the.pdfBreakingMayDepartmentTest for Pumping System Efficiency Test for Pumping System

  2. Experimental validation of the efficient robotic transportation algorithm for large-scale flexible space structures

    E-Print Network [OSTI]

    Ono, Masahiro, S.M. Massachusetts Institute of Technology

    2007-01-01T23:59:59.000Z

    A new large space structure transportation method proposed recently is modified and experimentally validated. The proposed method is to use space robots' manipulators to control the vibration, instead of their reaction ...

  3. Energy efficiency in public buildings through ICT based control and monitoring systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Energy efficiency in public buildings through ICT based control and monitoring systems G, France Keywords: energy efficiency, existing public buildings, control strategies, dynamic simulations a project entitled "Smart Energy Efficient Middleware for Public Spaces" (SEEMPubS). The project addresses

  4. Fuel Cell/Turbine Ultra High Efficiency Power System

    SciTech Connect (OSTI)

    Hossein, Ghezel-Ayagh

    2001-11-06T23:59:59.000Z

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

  5. Natural convection heat transport in a small, HLMC reactor system

    SciTech Connect (OSTI)

    Spencer, B.W.; Sienicki, J.J.; Farmer, M.T. [Argonne National Lab., IL (United States)

    1999-09-01T23:59:59.000Z

    Concepts are being developed and evaluated at Argonne National Laboratory for a small nuclear steam supply system (NSSS) with proliferation-resistant features targeted for export to developing countries. Here the authors are specifically investigating how simple and compact such a system can be. A heavy-liquid-metal coolant (HLMC) is being considered owing to its excellent heat transport characteristics and its relative inertness with the reference thermodynamic working fluid (water/steam). The purpose of the present work is to explore the possibility to take advantage of these HLMC characteristics by eliminating the intermediate loop needed in sodium-cooled systems and additionally eliminating the primary system coolant pumps. The criteria imposed on the system include the following: (1) low power, i.e., 300 MW(thermal); (2) small size for factory fabrication and overland transportation; (3) elimination of fuel access at the site (no refueling, fuel shuffling, nor storage at site); integral fueled module replacement at 15-yr goal interval; and (4) completion of all research and development needed for detailed prototype design within 5 yr. To accomplish the latter requirement, the authors are addressing whether existing coolant and materials technology is capable of supporting the sought-after simplifications. In this regard, they are at present considering technology developed in Russia for Pb-Bi eutectic as a reactor coolant and ferritic-martensitic stainless steel with oxide-layer corrosion protection as cladding. The figure of merit in the investigation is the peak cladding temperature insofar as the cladding technology is considered proven to {approximately}600 C.

  6. A Cooperative Personal Automated Transport System A CityMobil Demonstration in Rocquencourt

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    the problem of the autonomous navigation and coordination of multiple driverless vehicles for the transport advanced concepts for efficient urban transportation capable of reducing energy consumption, optimizing during the period of 3 months service. This demonstration showed how autonomous road vehicles can

  7. System and method to determine electric motor efficiency nonintrusively

    DOE Patents [OSTI]

    Lu, Bin (Kenosha, WI); Habetler, Thomas G. (Snellville, GA); Harley, Ronald G. (Lawrenceville, GA)

    2011-08-30T23:59:59.000Z

    A system and method for nonintrusively determining electric motor efficiency includes a processor programed to, while the motor is in operation, determine a plurality of stator input currents, electrical input data, a rotor speed, a value of stator resistance, and an efficiency of the motor based on the determined rotor speed, the value of stator resistance, the plurality of stator input currents, and the electrical input data. The determination of the rotor speed is based on one of the input power and the plurality of stator input currents. The determination of the value of the stator resistance is based on at least one of a horsepower rating and a combination of the plurality of stator input currents and the electrical input data. The electrical input data includes at least one of an input power and a plurality of stator input voltages.

  8. Nanocoatings for High-Efficiency Industrial Hydraulic and Tooling Systems

    SciTech Connect (OSTI)

    Clifton B. Higdon III

    2011-01-07T23:59:59.000Z

    Industrial manufacturing in the U.S. accounts for roughly one third of the 98 quadrillion Btu total energy consumption. Motor system losses amount to 1.3 quadrillion Btu, which represents the largest proportional loss of any end-use category, while pumps alone represent over 574 trillion BTU (TBTU) of energy loss each year. The efficiency of machines with moving components is a function of the amount of energy lost to heat because of friction between contacting surfaces. The friction between these interfaces also contributes to downtime and the loss of productivity through component wear and subsequent repair. The production of new replacement parts requires additional energy. Among efforts to reduce energy losses, wear-resistant, low-friction coatings on rotating and sliding components offer a promising approach that is fully compatible with existing equipment and processes. In addition to lubrication, one of the most desirable solutions is to apply a protective coating or surface treatment to rotating or sliding components to reduce their friction coefficients, thereby leading to reduced wear. Historically, a number of materials such as diamond-like carbon (DLC), titanium nitride (TiN), titanium aluminum nitride (TiAlN), and tungsten carbide (WC) have been examined as tribological coatings. The primary objective of this project was the development of a variety of thin film nanocoatings, derived from the AlMgB14 system, with a focus on reducing wear and friction in both industrial hydraulics and cutting tool applications. Proof-of-concept studies leading up to this project had shown that the constituent phases, AlMgB14 and TiB2, were capable of producing low-friction coatings by pulsed laser deposition. These coatings combine high hardness with a low friction coefficient, and were shown to substantially reduce wear in laboratory tribology tests. Selection of the two applications was based largely on the concept of improved mechanical interface efficiencies for energy conservation. In mobile hydraulic systems, efficiency gains through low friction would translate into improved fuel economy and fewer greenhouse gas emissions. Stationary hydraulic systems, accordingly, would consume less electrical power. Reduced tooling wear in machining operations would translate to greater operating yields, while lowering the energy consumed during processing. The AlMgB14 nanocoatings technology progressed beyond baseline laboratory tests into measurable energy savings and enhancements to product durability. Three key hydraulic markets were identified over the course of the project that will benefit from implementation: industrial vane pumps, orbiting valve-in-star hydraulic motors, and variable displacement piston pumps. In the vane pump application, the overall product efficiency was improved by as much as 11%. Similar results were observed with the hydraulic motors tested, where efficiency gains of over 10% were noted. For variable displacement piston pumps, overall efficiency was improved by 5%. For cutting tools, the most significant gains in productivity (and, accordingly, the efficiency of the machining process as a whole) were associated with the roughing and finishing of titanium components for aerospace systems. Use of the AlMgB14 nanocoating in customer field tests has shown that the coated tools were able to withstand machining rates as high as 500sfm (limited only by the substrate material), with relatively low flank wear when compared to other industrial offerings. AlMgB14 coated tools exhibited a 60% improvement over similarly applied TiAlN thin films. Furthermore, AlMgB14-based coatings in these particular tests lasted twice as long than their TiAlN counterparts at the 500sfm feed rates. Full implementation of the technology into the industrial hydraulic and cutting tool markets equates to a worldwide energy savings of 46 trillion BTU/year by 2030. U.S.-based GHG emissions associated with the markets identified would fall accordingly, dropping by as much as 50,000 tonnes annually.

  9. Work plan for the fabrication of the radioisotope thermoelectric generator transportation system package mounting

    SciTech Connect (OSTI)

    Satoh, J.A.

    1994-11-09T23:59:59.000Z

    The Radioisotope Thermoelectric Generator (RTG) has available a dedicated system for the transportation of RTG payloads. The RTG Transportation System (System 100) is comprised of four systems; the Package (System 120), the Semi-trailer (System 140), the Gas Management (System 160), and the Facility Transport (System 180). This document provides guidelines on the fabrication, technical requirements, and quality assurance of the Package Mounting (Subsystem 145), part of System 140. The description follows the Development Control Requirements of WHC-CM-6-1, EP 2.4, Rev. 3.

  10. Efficient energy transfer in light-harvesting systems, I: optimal temperature, reorganization energy, and spatial-

    E-Print Network [OSTI]

    Cao, Jianshu

    Efficient energy transfer in light-harvesting systems, I: optimal temperature, reorganization of efficient and robust energy transfer in light-harvesting systems provides new insights for the optimal the efficiency and maintain its stability. With the Haken-Strobl model, the maximal energy transfer efficiency

  11. The rationale/benefits of nuclear thermal rocket propulsion for NASA's lunar space transportation system

    SciTech Connect (OSTI)

    Borowski, S.K.

    1994-09-01T23:59:59.000Z

    The solid core nuclear thermal rocket (NTR) represents the next major evolutionary step in propulsion technology. With its attractive operating characteristics, which include high specific impulse (approximately 850-1000 s) and engine thrust-to-weight (approximately 4-20), the NTR can form the basis for an efficient lunar space transportation system (LTS) capable of supporting both piloted and cargo missions. Studies conducted at the NASA Lewis Research Center indicate that an NTR-based LTS could transport a fully-fueled, cargo-laden, lunar excursion vehicle to the Moon, and return it to low Earth orbit (LEO) after mission completion, for less initial mass in LEO than an aerobraked chemical system of the type studied by NASA during its '90-Day Study.' The all-propulsive NTR-powered LTS would also be 'fully reusable' and would have a 'return payload' mass fraction of approximately 23 percent--twice that of the 'partially reusable' aerobraked chemical system. Two NTR technology options are examined--one derived from the graphite-moderated reactor concept developed by NASA and the AEC under the Rover/NERVA (Nuclear Engine for Rocket Vehicle Application) programs, and a second concept, the Particle Bed Reactor (PBR). The paper also summarizes NASA's lunar outpost scenario, compares relative performance provided by different LTS concepts, and discusses important operational issues (e.g., reusability, engine 'end-of life' disposal, etc.) associated with using this important propulsion technology.

  12. A Publication of the Texas Transportation Institute Member of The Texas A&M University System Vol. 39 No. 1 2003 Transportation is critical

    E-Print Network [OSTI]

    A Publication of the Texas Transportation Institute · Member of The Texas A&M University System · Vol. 39 · No. 1 · 2003 #12;Transportation is critical to quality of life... and often, its preservation. TEXAS TRANSPORTATION RESEARCHER2 niversity transportation research has made significant

  13. Summary Report on the Transportation Combustion Engine Efficiency Colloquium Held at USCAR, March 3 and 4, 2010

    SciTech Connect (OSTI)

    Daw, C Stuart [ORNL; Graves, Ronald L [ORNL; Caton, Jerald A [ORNL; Wagner, Robert M [ORNL

    2010-11-01T23:59:59.000Z

    This report summarizes results from an invited two-day colloquium of twenty-nine combustion engine experts from academia, industry, and national labs that was convened March 3rd and 4th, 2010, at the headquarters of the United States Council for Automotive Research (USCAR) in Southfield, Michigan. The colloquium was held at the request of The Department of Energy (DOE) Office of Freedom Car and Vehicle Technologies (OFCVT) to review and assess the current state of transportation combustion engine technology from theoretical and practical perspectives. In the ensuing discussions, the experts were able to reach a broad consensus on some important questions regarding current fuel efficiency limits. They also identified technology barriers and recommended specific near and longer-term R&D priorities for DOE's consideration. Internal combustion engines currently play a dominant role in U.S. transportation and are expected to continue to do so well beyond 2020 [1]. Because of this, the Department of Energy (DOE) has placed high priority on promoting technologies that maximize combustion engine fuel efficiency while minimizing greenhouse gas emissions. Identification of the most promising paths to achieve these goals has recently become more complicated as non-traditional transportation fuels and hybrid electric vehicles become widely available. To reassess the state of combustion engine science and identify new opportunities for technology breakthroughs, an invited colloquium of combustion engine experts was convened on March 3rd and 4th, 2010, at the headquarters of the United States Council for Automotive Research (USCAR) in Southfield, Michigan. The colloquium objectives were: (1) Review and assess the current state of transportation combustion engine technology from both theoretical and practical perspectives; (2) Arrive at a consensus on the theoretical and practical fuel efficiencies that can be achieved; and (3) Recommend near and longer-term R&D priorities for DOE to consider in developing their strategic planning for reaching efficiency goals. This report summarizes the main discussion points and recommendations that emerged from the meeting. Included are areas where there is widespread consensus and areas where there are still important technical uncertainties and wide ranging opinions.

  14. Functional requirements for the Automated Transportation Management System: TTP number: RL 439002

    SciTech Connect (OSTI)

    Portsmouth, J.H. [Westinghouse Hanford Co., Richland, WA (United States)

    1992-12-31T23:59:59.000Z

    This requirements analysis, documents Department of Energy (DOE) transportation management procedures for the purpose of providing a clear and mutual understanding between users and designers of the proposed Automated Transportation Management System (ATMS). It is imperative that one understand precisely how DOE currently performs traffic management tasks; only then can an integrated system be proposed that successfully satisfies the major requirements of transportation managers and other system users. Accordingly, this report describes the current workings of DOE transportation organizations and then proposes a new system which represents a synthesis of procedures (both current and desired) which forms the basis for further systems development activities.

  15. Integrated System for Retrieval, Transportation and Consolidated Storage of Used Nuclear Fuel in the US - 13312

    SciTech Connect (OSTI)

    Bracey, William; Bondre, Jayant; Shelton, Catherine [Transnuclear, Inc., 7135 Minstrel Way Suite 300, Columbia MD 21045 (United States)] [Transnuclear, Inc., 7135 Minstrel Way Suite 300, Columbia MD 21045 (United States); Edmonds, Robert [AREVA Federal Services, 7207 IBM Drive, Charlotte NC 28262 (United States)] [AREVA Federal Services, 7207 IBM Drive, Charlotte NC 28262 (United States)

    2013-07-01T23:59:59.000Z

    The current inventory of used nuclear fuel assemblies (UNFAs) from commercial reactor operations in the United States totals approximately 65,000 metric tons or approximately 232,000 UNFAs primarily stored at the 104 operational reactors in the US and a small number of decommissioned reactors. This inventory is growing at a rate of roughly 2,000 to 2,400 metric tons each year, (Approx. 7,000 UNFAs) as a result of ongoing commercial reactor operations. Assuming an average of 10 metric tons per storage/transportation casks, this inventory of commercial UNFAs represents about 6,500 casks with an additional of about 220 casks every year. In January 2010, the Blue Ribbon Commission (BRC) [1] was directed to conduct a comprehensive review of policies for managing the back end of the nuclear fuel cycle and recommend a new plan. The BRC issued their final recommendations in January 2012. One of the main recommendations is for the United States to proceed promptly to develop one or more consolidated storage facilities (CSF) as part of an integrated, comprehensive plan for safely managing the back end of the nuclear fuel cycle. Based on its extensive experience in storage and transportation cask design, analysis, licensing, fabrication, and operations including transportation logistics, Transnuclear, Inc. (TN), an AREVA Subsidiary within the Logistics Business Unit, is engineering an integrated system that will address the complete process of commercial UNFA management. The system will deal with UNFAs in their current storage mode in various configurations, the preparation including handling and additional packaging where required and transportation of UNFAs to a CSF site, and subsequent storage, operation and maintenance at the CSF with eventual transportation to a future repository or recycling site. It is essential to proceed by steps to ensure that the system will be the most efficient and serve at best its purpose by defining: the problem to be resolved, the criteria to evaluate the solutions, and the alternative solutions. The complexity of the project is increasing with time (more fuel assemblies, new storage systems, deteriorating logistics infrastructure at some sites, etc.) but with the uncertainty on the final disposal path, flexibility and simplicity will be critical. (authors)

  16. Index to Evaluate Energy Efficiency of the Building HVAC System

    E-Print Network [OSTI]

    Wang, L.; Wang, L.; Claridge,D.

    2014-01-01T23:59:59.000Z

    1An Index to Evaluate Energy Efficiency of the Entire Building HVAC System Presented by Dr. Claridge Date: 09/15/2014 ESL-IC-14-09-15 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14...-17, 2014 2Outline •Why we need the Energy/Load Ratio •How to get the Energy/Load Ratio •Methodology Adjustment •Case Study •Results Showed by tables and Plots ESL-IC-14-09-15 Proceedings of the 14th International Conference for Enhanced Building Operations...

  17. Automated Transportation Management System (ATMS) Software Project Management Plan (SPMP). Revision 2

    SciTech Connect (OSTI)

    Weidert, R.S.

    1995-05-26T23:59:59.000Z

    As a cabinet level federal agency with a diverse range of missions and an infrastructure spanning the United States, the US Department of Energy (DOE) has extensive freight transportation requirements. Performance and management of this freight activity is a critical function. DOE`s Transportation Management Division (TMD) has an agency-wide responsibility for overseeing transportation activities. Actual transportation operations are handled by government or contractor staff at the field locations. These staff have evolved a diverse range of techniques and procedures for performing transportation functions. In addition to minimizing the economic impact of transportation on programs, facility transportation staff must be concerned with the increasingly complex task of complying with complex shipment safety regulations. Maintaining the department`s safety record for shipping hazardous and radioactive materials is a primary goal. Use of automation to aid transportation functions is not widespread within DOE, though TMD has a number of software systems designed to gather and analyze data pertaining to field transportation activities. These systems are not integrated. Historically, most field facilities have accomplished transportation-related tasks manually or with minimal computer assistance. At best, information and decision support systems available to transportation staffs within the facilities are fragmented. In deciding where to allocate resources for automation, facility managers have not tended to give the needs of transportation departments a high priority. This diversity causes TMD significant difficulty in collecting data for use in managing department-wide transportation activities.

  18. Coherent quantum transport in disordered systems: A unified polaron treatment of hopping and band-like transport

    E-Print Network [OSTI]

    Chee Kong Lee; Jeremy Moix; Jianshu Cao

    2014-10-30T23:59:59.000Z

    Quantum transport in disordered systems is studied using a polaron-based master equation. The polaron approach is capable of bridging the results from the coherent band-like transport regime governed by the Redfield equation to incoherent hopping transport in the classical regime. A non-monotonic dependence of the diffusion coefficient is observed both as a function of temperature and system-phonon coupling strength. In the band-like transport regime, the diffusion coefficient is shown to be linearly proportional to the system-phonon coupling strength, and vanishes at zero coupling due to Anderson localization. In the opposite classical hopping regime, we correctly recover that the dynamics are described by the Fermi's Golden Rule (FGR) and establish that the scaling of the diffusion coefficient depends on the phonon bath relaxation time. In both the hopping and band-like transport regimes, it is demonstrated that at low temperature the zero-point fluctuations of the bath lead to non-zero transport rates, and hence a finite diffusion constant. Application to rubrene and other organic semiconductor materials shows a good agreement with experimental mobility data.

  19. Advanced Organic Vapor Cycles for Improving Thermal Conversion Efficiency in Renewable Energy Systems

    E-Print Network [OSTI]

    Ho, Tony

    2012-01-01T23:59:59.000Z

    and higher efficiency photovoltaic systems. However, forphotovoltaic system such that reasonable solar-to-electric conversion efficienciesphotovoltaic co-generation scheme could have potentially very high solar-to-electric efficiency.

  20. Intelligent Efficiency: the Next Generation of Energy Efficiency 

    E-Print Network [OSTI]

    Trombley,D.; Molina, M.; Elliot, R. N.

    2012-01-01T23:59:59.000Z

    of buildings, an entire city, or the electric power grid, allow a scaling up of intelligent efficiency, amplifying the benefits by coordinating all systems. Through intelligent efficiency, smart grids, cities, transportation systems, and communications..., there is another aspect of intelligent efficiency that is the key to realizing its potential: intelligent infrastructure. Intelligent efficiency enables more integrated, smarter, and more reliable infrastructure, such as smart power grids, cities...

  1. Intelligent Efficiency: the Next Generation of Energy Efficiency

    E-Print Network [OSTI]

    Trombley,D.; Molina, M.; Elliot, R. N.

    2012-01-01T23:59:59.000Z

    of buildings, an entire city, or the electric power grid, allow a scaling up of intelligent efficiency, amplifying the benefits by coordinating all systems. Through intelligent efficiency, smart grids, cities, transportation systems, and communications..., there is another aspect of intelligent efficiency that is the key to realizing its potential: intelligent infrastructure. Intelligent efficiency enables more integrated, smarter, and more reliable infrastructure, such as smart power grids, cities...

  2. Design and scenario assessment for collaborative logistics and freight transport systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Design and scenario assessment for collaborative logistics and freight transport systems Jesus Collaboration between partners is a very popular subject in both logistics and decision support research of logistics and freight transport, as well as to describe the links between freight transport and supply chain

  3. VAPOUR PHASE CHEMICAL TRANSPORT PROPERTIES OF THE CADMIUM TELLURIDE-IODINE SYSTEM

    E-Print Network [OSTI]

    Boyer, Edmond

    , it was shown that no iodine chemical transport is possible in closed tubes in the hot-cold direction, but only was explained in terms of a reverse (cold-hot) iodine transport associated with a reduced sublimation tendency155 VAPOUR PHASE CHEMICAL TRANSPORT PROPERTIES OF THE CADMIUM TELLURIDE-IODINE SYSTEM C. PAORICI

  4. efficiency, productivity, and safety of transportation, and to alleviate the impact

    E-Print Network [OSTI]

    Pennycook, Steve

    transportation community with innovative, practical tools and techniques for the analysis and management Laboratory-- conducts research on a wide range of applications, focusing primarily on remote sensing and weigh-in-motion, spectroscopy, full-spectrum solar energy, and sensors. Power Electronics and Electric

  5. High efficiency switching-mode amplifiers for wireless communication systems

    E-Print Network [OSTI]

    Hung, Tsai-Pi

    2008-01-01T23:59:59.000Z

    M. Asbeck, “Design of high-efficiency current-mode class-Dand G. Rabjohn, “A high efficiency Chireix Out- phasingE-A new class of high efficiency tuned single-ended power

  6. Best Practices for Finite Element Analysis of Spent Nuclear Fuel Transfer, Storage, and Transportation Systems

    SciTech Connect (OSTI)

    Bajwa, Christopher S.; Piotter, Jason; Cuta, Judith M.; Adkins, Harold E.; Klymyshyn, Nicholas A.; Fort, James A.; Suffield, Sarah R.

    2010-08-11T23:59:59.000Z

    Storage casks and transportation packages for spent nuclear fuel (SNF) are designed to confine SNF in sealed canisters or casks, provide structural integrity during accidents, and remove decay through a storage or transportation overpack. The transfer, storage, and transportation of SNF in dry storage casks and transport packages is regulated under 10 CFR Part 72 and 10 CFR Part 71, respectively. Finite Element Analysis (FEA) is used with increasing frequency in Safety Analysis Reports and other regulatory technical evaluations related to SNF casks and packages and their associated systems. Advances in computing power have made increasingly sophisticated FEA models more feasible, and as a result, the need for careful review of such models has also increased. This paper identifies best practice recommendations that stem from recent NRC review experience. The scope covers issues common to all commercially available FEA software, and the recommendations are applicable to any FEA software package. Three specific topics are addressed: general FEA practices, issues specific to thermal analyses, and issues specific to structural analyses. General FEA practices covers appropriate documentation of the model and results, which is important for an efficient review process. The thermal analysis best practices are related to cask analysis for steady state conditions and transient scenarios. The structural analysis best practices are related to the analysis of casks and associated payload during standard handling and drop scenarios. The best practices described in this paper are intended to identify FEA modeling issues and provide insights that can help minimize associated uncertainties and errors, in order to facilitate the NRC licensing review process.

  7. Energy Efficiency in Heavy Vehicle Tires, Drivetrains, and Braking Systems

    SciTech Connect (OSTI)

    Peter J. Blau

    2000-04-26T23:59:59.000Z

    This document was prepared to support the primary goals of the Department of Energy, Office of Heavy Vehicle Technologies. These were recently stated as follows: ''Develop by 2004 the enabling technologies for a class 7-8 truck with a fuel efficiency of 10 mpg (at 65 mph) which will meet prevailing emission standards. For Class 3-6 trucks operating on an urban driving cycle, develop by 2004 commercially viable vehicles that achieve at least double the fuel economy of comparable current vehicles (1999), and as a research goal, reduce criteria pollutants to 30% below EPA standards. Develop by 2004 the diesel engine enabling technologies to support large-scale industry dieselization of Class 1 and 2 trucks, achieving a 35 % fuel efficiency improvement over comparable gasoline-fueled trucks, while meeting applicable emissions standards.'' The enabling technologies for improving the fuel efficiency of trucks, include not only engine technologies but also technologies involved with lowering the rolling resistance of tires, reducing vehicle aerodynamic drag, improving thermal management, and reducing parasitic frictional losses in drive train components. Opportunities also exist for making better use of the energy that might ordinarily be dissipated during vehicle braking. Braking systems must be included in this evaluation since safety in truck operations is vital, and braking requirements are greater for vehicles having lowered resistance to rolling. The Office of Heavy Vehicle Technologies has initiated a program to improve the aerodynamics of heavy vehicles through wind tunnel testing, computational modeling, and on-road evaluations. That activity is described in a separate multi-year plan; therefore, emphasis in this document will be on tires, drive trains, and braking systems. Recent, dramatic fluctuations in diesel fuel prices have emphasized the importance of effecting savings in truck fuel economy by implementing new component designs and materials.

  8. Technology Evaluation and Integration Group: Center for Transportation Technologies and Systems

    SciTech Connect (OSTI)

    Not Available

    2008-08-01T23:59:59.000Z

    Fact sheet describes the specialized work done by NREL's Technology Evaluation and Integration Group in the Center for Transportation Technologies and Systems.

  9. Sediment transport and topographic evolution of a coupled river and river plume system

    E-Print Network [OSTI]

    Sediment transport and topographic evolution of a coupled river and river plume system inundation from storms, hurricanes, and tsunamis [Tornqvist et al., 2007; Blum and Roberts, 2009; Jerolmack

  10. Toward new solid and liquid phase systems for the containment, transport and delivery of hydrogen

    Broader source: Energy.gov [DOE]

    Toward new solid and liquid phase systems for the containment, transport and delivery of hydrogen.Solid and liquid hydrogen carriers for use in hydrogen storage and delivery.

  11. Can We Improve Energy Efficiency of Secure Disk Systems without Modifying Security Mechanisms?

    E-Print Network [OSTI]

    Qin, Xiao

    Can We Improve Energy Efficiency of Secure Disk Systems without Modifying Security Mechanisms--Improving energy efficiency of security-aware storage systems is challenging, because security and energy security and energy efficiency is to profile encryption algorithms to decide if storage systems would

  12. TRACER: A Trace Replay Tool to Evaluate Energy-Efficiency of Mass Storage Systems

    E-Print Network [OSTI]

    Qin, Xiao

    TRACER: A Trace Replay Tool to Evaluate Energy-Efficiency of Mass Storage Systems Zhuo Liu1 , Fei of accurately evaluating energy-efficient storage systems and objectively comparing a wide range of energy RAID5 enterprise disk array. Our experiments demonstrate that energy-efficient mass storage systems can

  13. Transportation Market Distortions

    E-Print Network [OSTI]

    Litman, Todd

    2006-01-01T23:59:59.000Z

    of Highways, Volpe National Transportation Systems Center (Evaluating Criticism of Transportation Costing, VictoriaFrom Here: Evaluating Transportation Diversity, Victoria

  14. Improving the Efficiency of Light-Duty Vehicle HVAC Systems using...

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

    Light-Duty Vehicle HVAC Systems using Zonal Thermoelectric Devices and Comfort Modeling Improving the Efficiency of Light-Duty Vehicle HVAC Systems using Zonal Thermoelectric...

  15. Design and global optimization of high-efficiency solar thermal systems with tungsten cermets

    E-Print Network [OSTI]

    Chester, David A.

    Solar thermal, thermoelectric, and thermophotovoltaic (TPV) systems have high maximum theoretical efficiencies; experimental systems fall short because of losses by selective solar absorbers and TPV selective emitters. To ...

  16. Fabrication and electronic transport studies of single nanocrystal systems

    SciTech Connect (OSTI)

    Klein, D L [Univ. of California, Berkeley, CA (United States). Dept. of Physics

    1997-05-01T23:59:59.000Z

    Semiconductor and metallic nanocrystals exhibit interesting electronic transport behavior as a result of electrostatic and quantum mechanical confinement effects. These effects can be studied to learn about the nature of electronic states in these systems. This thesis describes several techniques for the electronic study of nanocrystals. The primary focus is the development of novel methods to attach leads to prefabricated nanocrystals. This is because, while nanocrystals can be readily synthesized from a variety of materials with excellent size control, means to make electrical contact to these nanocrystals are limited. The first approach that will be described uses scanning probe microscopy to first image and then electrically probe surfaces. It is found that electronic investigations of nanocrystals by this technique are complicated by tip-sample interactions and environmental factors such as salvation and capillary forces. Next, an atomic force microscope technique for the catalytic patterning of the surface of a self assembled monolayer is described. In principle, this nano-fabrication technique can be used to create electronic devices which are based upon complex arrangements of nanocrystals. Finally, the fabrication and electrical characterization of a nanocrystal-based single electron transistor is presented. This device is fabricated using a hybrid scheme which combines electron beam lithography and wet chemistry to bind single nanocrystals in tunneling contact between closely spaced metallic leads. In these devices, both Au and CdSe nanocrystals show Coulomb blockade effects with characteristic energies of several tens of meV. Additional structure is seen the transport behavior of CdSe nanocrystals as a result of its electronic structure.

  17. Fuel Cell System for Transportation -- 2005 Cost Estimate

    SciTech Connect (OSTI)

    Wheeler, D.

    2006-10-01T23:59:59.000Z

    Independent review report of the methodology used by TIAX to estimate the cost of producing PEM fuel cells using 2005 cell stack technology. The U.S. Department of Energy (DOE) Hydrogen, Fuel Cells and Infrastructure Technologies Program Manager asked the National Renewable Energy Laboratory (NREL) to commission an independent review of the 2005 TIAX cost analysis for fuel cell production. The NREL Systems Integrator is responsible for conducting independent reviews of progress toward meeting the DOE Hydrogen Program (the Program) technical targets. An important technical target of the Program is the proton exchange membrane (PEM) fuel cell cost in terms of dollars per kilowatt ($/kW). The Program's Multi-Year Program Research, Development, and Demonstration Plan established $125/kW as the 2005 technical target. Over the last several years, the Program has contracted with TIAX, LLC (TIAX) to produce estimates of the high volume cost of PEM fuel cell production for transportation use. Since no manufacturer is yet producing PEM fuel cells in the quantities needed for an initial hydrogen-based transportation economy, these estimates are necessary for DOE to gauge progress toward meeting its targets. For a PEM fuel cell system configuration developed by Argonne National Laboratory, TIAX estimated the total cost to be $108/kW, based on assumptions of 500,000 units per year produced with 2005 cell stack technology, vertical integration of cell stack manufacturing, and balance-of-plant (BOP) components purchased from a supplier network. Furthermore, TIAX conducted a Monte Carlo analysis by varying ten key parameters over a wide range of values and estimated with 98% certainty that the mean PEM fuel cell system cost would be below DOE's 2005 target of $125/kW. NREL commissioned DJW TECHNOLOGY, LLC to form an Independent Review Team (the Team) of industry fuel cell experts and to evaluate the cost estimation process and the results reported by TIAX. The results of this independent review will permit NREL and DOE to better understand the credibility of the TIAX cost estimation process and to implement changes in future cost analyses, if necessary. The Team found the methodology used by TIAX to estimate the cost of producing PEM fuel cells to be reasonable and, using 2005 cell stack technology and assuming production of 500,000 units per year, to have calculated a credible cost of $108/kW.

  18. Lean Gasoline System Development for Fuel Efficient Small Cars

    SciTech Connect (OSTI)

    None

    2013-08-30T23:59:59.000Z

    The General Motors and DOE cooperative agreement program DE-EE0003379 is completed. The program has integrated and demonstrated a lean-stratified gasoline engine, a lean aftertreatment system, a 12V Stop/Start system and an Active Thermal Management system along with the necessary controls that significantly improves fuel efficiency for small cars. The fuel economy objective of an increase of 25% over a 2010 Chevrolet Malibu and the emission objective of EPA T2B2 compliance have been accomplished. A brief review of the program, summarized from the narrative is: The program accelerates development and synergistic integration of four cost competitive technologies to improve fuel economy of a light-duty vehicle by at least 25% while meeting Tier 2 Bin 2 emissions standards. These technologies can be broadly implemented across the U.S. light-duty vehicle product line between 2015 and 2025 and are compatible with future and renewable biofuels. The technologies in this program are: lean combustion, innovative passive selective catalyst reduction lean aftertreatment, 12V stop/start and active thermal management. The technologies will be calibrated in a 2010 Chevrolet Malibu mid-size sedan for final fuel economy demonstration.

  19. Coherent Structures and Larval Transport in the California Current System

    E-Print Network [OSTI]

    Harrison, Cheryl S.

    2012-01-01T23:59:59.000Z

    the jet is transported downstream. Two questions emerge: (1)higher settlement downstream from headlands (Ebert andseen in modeling studies downstream from promontories (Kim

  20. Fuels Performance Group: Center for Transportation Technologies and Systems

    SciTech Connect (OSTI)

    Not Available

    2008-08-01T23:59:59.000Z

    Describes R&D and analysis in advanced petroleum-based and non-petroleum-based transportation fuels done by NREL's Fuels Performance Group.

  1. TransDec: A Data-Driven Framework for Decision-Making in Transportation Systems

    E-Print Network [OSTI]

    Shahabi, Cyrus

    Transportation Systems). The RIITS dataset is collected by various organizations based in Los Angeles County1 TransDec: A Data-Driven Framework for Decision-Making in Transportation Systems Ugur Demiryurek Los Angeles, CA 90089-0781 [demiryur, banaeika, shahabi]@usc.edu ABSTRACT In this paper, we present

  2. Transport and coastal zooplankton communities in the northern California Current system

    E-Print Network [OSTI]

    Kurapov, Alexander

    Transport and coastal zooplankton communities in the northern California Current system Hongsheng 13 May 2011; published 25 June 2011. [1] Alongshore transport was estimated from the gridded AVISO (NCC) system. The biomass of the cold neritic copepods including Calanus marshallae, Pseudocalanus

  3. Efficiency improvement of a ground coupled heat pump system from energy management

    E-Print Network [OSTI]

    Fernández de Córdoba, Pedro

    Efficiency improvement of a ground coupled heat pump system from energy management N. Pardo a,*, Á coupled heat pump Energy efficiency Numerical simulation a b s t r a c t The installed capacity of an air to improve the efficiency of a ground coupled heat pump air conditioning system by adapting its produced

  4. An Efficient Energy Management System for Android Phone Using Bayesian Networks

    E-Print Network [OSTI]

    Cho, Sung-Bae

    An Efficient Energy Management System for Android Phone Using Bayesian Networks Young-Seol Lee, proximity, light and orientation sensors for context-awareness. Energy-efficient battery management systems, it becomes an issue to develop the techniques for efficient energy management on a mobile phone [2, 3, 4

  5. vGreen: A System for Energy Efficient Computing in Virtualized Environments

    E-Print Network [OSTI]

    Simunic, Tajana

    with the ob- jective of managing the overall energy efficiency and performance. The basic premise behind vvGreen: A System for Energy Efficient Computing in Virtualized Environments Gaurav Dhiman gdhimanGreen, a multi-tiered software system for energy efficient computing in virtualized environments. It com- prises

  6. Metering Air Compressor Systems for Efficiency: A Progress Report

    E-Print Network [OSTI]

    Joseph, B.

    2005-01-01T23:59:59.000Z

    Air compressors have energy efficiency quantified as SCFM/BHP. However, this efficiency fluctuates over a broad range based on the loading of the compressor. When multiple compressors operate with varying loads, as in a central plant, the overall...

  7. SWEEP: Evaluating Computer System Energy Efficiency using Synthetic Workloads

    E-Print Network [OSTI]

    Eeckhout, Lieven

    and benchmarking methodologies for evaluating energy efficiency, which should ultimately lead to more energy-efficient designs. The Embedded Microprocessor Benchmarking Consortium (EEMBC) released EnergyBench which provides

  8. Energy Efficiency Evaluation of Guangzhou West Tower Façade System 

    E-Print Network [OSTI]

    Meng, Q.; Zhang, L.

    2006-01-01T23:59:59.000Z

    Guangzhou West Tower is an extremely tall public building. The energy efficiency evaluation of its façade should be different than that of ordinary public buildings. Based on the national code GB50189-2005, “Design Standard for Energy efficiency...

  9. Quantum and Classical Superballistic Transport in a Relativistic Kicked-Rotor System

    E-Print Network [OSTI]

    Qifang Zhao; Cord A. Muller; Jiangbin Gong

    2014-05-27T23:59:59.000Z

    As an unusual type of anomalous diffusion behavior, superballistic transport is not well known but has been experimentally simulated recently. Quantum superballistic transport models to date are mainly based on connected sublattices which are constructed to have different properties. In this work, we show that both quantum and classical superballistic transport in the momentum space can occur in a simple periodically driven Hamiltonian system, namely, a relativistic kicked-rotor system with a nonzero mass term. The nonzero mass term essentially realizes a junction-like scenario: regimes with low or high momentum values have different dispersion relations and hence different transport properties. It is further shown that the quantum and classical superballistic transport should occur under much different choices of the system parameters. The results are of interest to studies of anomalous transport, quantum and classical chaos, and the issue of quantum-classical correspondence.

  10. Alternative p-doped hole transport material for low operating voltage and high efficiency organic light-emitting diodes

    SciTech Connect (OSTI)

    Murawski, Caroline, E-mail: caroline.murawski@iapp.de; Fuchs, Cornelius; Hofmann, Simone; Leo, Karl [Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Str. 1, 01062 Dresden (Germany); Gather, Malte C. [Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Str. 1, 01062 Dresden (Germany); SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, KY16 9SS Scotland (United Kingdom)

    2014-09-15T23:59:59.000Z

    We investigate the properties of N,N?-[(Diphenyl-N,N?-bis)9,9,-dimethyl-fluoren-2-yl]-benzidine (BF-DPB) as hole transport material (HTL) in organic light-emitting diodes (OLEDs) and compare BF-DPB to the commonly used HTLs N,N,N?,N?-tetrakis(4-methoxyphenyl)-benzidine (MeO-TPD), 2,2?,7,7?-tetrakis(N,N?-di-p-methylphenylamino)-9,9?-spirobifluorene (Spiro-TTB), and N,N?-di(naphtalene-1-yl)-N,N?-diphenylbenzidine (NPB). The influence of 2,2?-(perfluoronaphthalene-2,6-diylidene)dimalononitrile (F6-TCNNQ p-dopant) concentration in BF-DPB on the operation voltage and efficiency of red and green phosphorescent OLEDs is studied; best results are achieved at 4?wt. % doping. Without any light extraction structure, BF-DPB based red (green) OLEDs achieve a luminous efficacy of 35?.1?lm/W (74?.0?lm/W) at 1000?cd/m{sup 2} and reach a very high brightness of 10?000 cd/m{sup 2} at a very low voltage of 3.2 V (3.1 V). We attribute this exceptionally low driving voltage to the high ionization potential of BF-DPB which enables more efficient hole injection from BF-DPB to the adjacent electron blocking layer. The high efficiency and low driving voltage lead to a significantly lower luminous efficacy roll-off compared to the other compounds and render BF-DPB an excellent HTL material for highly efficient OLEDs.

  11. Vehicle routing and scheduling for the ultra short haul transportation system

    E-Print Network [OSTI]

    Smith, Barry C.

    1979-01-01T23:59:59.000Z

    A method of vehicle routing and scheduling for an air based intraurban transportation system is developed. The maximization of level of service to passengers in a system operating under time varying demand is considered ...

  12. Should we transport coal, gas, or electricity: cost, efficiency, and environmental implications

    SciTech Connect (OSTI)

    Joule A. Bergerson; Lester B. Lave [Carnegie Mellon University, Pittsburgh, PA (US)

    2005-08-15T23:59:59.000Z

    The authors examine the life cycle costs, environmental discharges, and deaths of moving coal via rail, coal to synthetic natural gas via pipeline, and electricity via wire from the Powder River Basin (PRB) in Wyoming to Texas. Which method has least social cost depends on how much additional investment in rail line, transmission, or pipeline infrastructure is required, as well as how much and how far energy is transported. If the existing rail lines have unused capacity, coal by rail is the cheapest method (up to 200 miles of additional track could be added). If no infrastructure exists, greater distances and larger amounts of energy favor coal by rail and gasified coal by pipeline over electricity transmission. For 1,000 miles and 9 gigawatts of power, a gas pipeline is cheapest, has less environmental discharges, uses less land, and is least obtrusive. 28 refs., 4 figs., 3 tabs.

  13. Energy Efficient Phase Change Memory Based Main Memory for Future High Performance Systems

    E-Print Network [OSTI]

    Conte, Thomas M.

    hybrid system using a commodity DRAM cache. Keywords-Memory Controller, DRAM, PCM, Energy I. INTRODUCTIONEnergy Efficient Phase Change Memory Based Main Memory for Future High Performance Systems Abstract system of similar storage size. Our proposed system is highly energy efficient and provides 35

  14. Expansion joint for guideway for magnetic levitation transportation system

    DOE Patents [OSTI]

    Rossing, T.D.

    1993-02-09T23:59:59.000Z

    An expansion joint that allows a guideway of a magnetic levitation transportation system to expand and contract while minimizing transients occurring in the magnetic lift and drag forces acting on a magnetic levitation vehicle traveling over the joint includes an upper cut or recess extending downwardly from the upper surface of the guideway and a non-intersecting lower cut or recess that extends upwardly from the lower surface of the guideway. The side walls of the cuts can be parallel to each other and the vertical axis of the guideway; the depth of the lower cut can be greater than the depth of the upper cut; and the overall combined lengths of the cuts can be greater than the thickness of the guideway from the upper to lower surface so that the cuts will overlap, but be spaced apart from each other. The distance between the cuts can be determined on the basis of the force transients and the mechanical behavior of the guideway. A second pair of similarly configured upper and lower cuts may be disposed in the guideway; the expansion joint may consist of two upper cuts and one lower cut; or the cuts may have non-parallel, diverging side walls so that the cuts have a substantially dove-tail shape.

  15. Expansion joint for guideway for magnetic levitation transportation system

    DOE Patents [OSTI]

    Rossing, Thomas D. (DeKalb, IL)

    1993-01-01T23:59:59.000Z

    An expansion joint that allows a guideway of a magnetic levitation transportation system to expand and contract while minimizing transients occurring in the magnetic lift and drag forces acting on a magnetic levitation vehicle traveling over the joint includes an upper cut or recess extending downwardly from the upper surface of the guideway and a non-intersecting lower cut or recess that extends upwardly from the lower surface of the guideway. The sidewalls of the cuts can be parallel to each other and the vertical axis of the guideway; the depth of the lower cut can be greater than the depth of the upper cut; and the overall combined lengths of the cuts can be greater than the thickness of the guideway from the upper to lower surface so that the cuts will overlap, but be spaced apart from each other. The distance between the cuts can be determined on the basis of the force transients and the mechanical behavior of the guideway. A second pair of similarly configured upper and lower cuts may be disposed in the guideway; the expansion joint may consist of two upper cuts and one lower cut; or the cuts may have non-parallel, diverging sidewalls so that the cuts have a substantially dove-tail shape.

  16. Energy Efficiency Evaluation of Refrigeration Technologies in Combined Cooling, Heating and Power Systems 

    E-Print Network [OSTI]

    Zuo, Z.; Hu, W.

    2006-01-01T23:59:59.000Z

    . Exergy efficiency of optional chillers in CCHP system was analyzed and compared, which can be regarded as an important reference criterion in comparison of energy efficiency. Furthermore, a new index, relative electricity saving ratio, was put forward...

  17. An electrochemical system for efficiently harvesting low-grade heat energy

    E-Print Network [OSTI]

    Lee, Seok Woo

    Efficient and low-cost thermal energy-harvesting systems are needed to utilize the tremendous low-grade heat sources. Although thermoelectric devices are attractive, its efficiency is limited by the relatively low ...

  18. Electrical and Thermal Transport Optimization of High Efficient n-type

    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 DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisory BoardNucleate Boiling EfficientState Electric0-2007 August 2007

  19. Assessing recycling versus incineration of key materials in municipal waste: The importance of efficient energy recovery and transport distances

    SciTech Connect (OSTI)

    Merrild, Hanna [Department of Environmental Engineering, Technical University of Denmark, Miljoevej, Building 113, DK-2800 Kongens Lyngby (Denmark); Larsen, Anna W., E-mail: awla@env.dtu.dk [Department of Environmental Engineering, Technical University of Denmark, Miljoevej, Building 113, DK-2800 Kongens Lyngby (Denmark); Christensen, Thomas H. [Department of Environmental Engineering, Technical University of Denmark, Miljoevej, Building 113, DK-2800 Kongens Lyngby (Denmark)

    2012-05-15T23:59:59.000Z

    Highlights: Black-Right-Pointing-Pointer We model the environmental impact of recycling and incineration of household waste. Black-Right-Pointing-Pointer Recycling of paper, glass, steel and aluminium is better than incineration. Black-Right-Pointing-Pointer Recycling and incineration of cardboard and plastic can be equally good alternatives. Black-Right-Pointing-Pointer Recyclables can be transported long distances and still have environmental benefits. Black-Right-Pointing-Pointer Paper has a higher environmental benefit than recyclables found in smaller amounts. - Abstract: Recycling of materials from municipal solid waste is commonly considered to be superior to any other waste treatment alternative. For the material fractions with a significant energy content this might not be the case if the treatment alternative is a waste-to-energy plant with high energy recovery rates. The environmental impacts from recycling and from incineration of six material fractions in household waste have been compared through life cycle assessment assuming high-performance technologies for material recycling as well as for waste incineration. The results showed that there are environmental benefits when recycling paper, glass, steel and aluminium instead of incinerating it. For cardboard and plastic the results were more unclear, depending on the level of energy recovery at the incineration plant, the system boundaries chosen and which impact category was in focus. Further, the environmental impact potentials from collection, pre-treatment and transport was compared to the environmental benefit from recycling and this showed that with the right means of transport, recyclables can in most cases be transported long distances. However, the results also showed that recycling of some of the material fractions can only contribute marginally in improving the overall waste management system taking into consideration their limited content in average Danish household waste.

  20. System and method to determine electric motor efficiency using an equivalent circuit

    DOE Patents [OSTI]

    Lu, Bin (Kenosha, WI); Habetler, Thomas G. (Snellville, GA)

    2011-06-07T23:59:59.000Z

    A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric motor is online. The determination of motor efficiency is independent of a rotor speed measurement. Further, the efficiency is based on a determination of stator winding resistance, an input voltage, and an input current. The determination of the stator winding resistance occurs while the electric motor under load is online.

  1. Customer System Efficiency Improvement Assessment: Description and examination of system characterization data

    SciTech Connect (OSTI)

    Callaway, J.W.; DeSteese, J.G.

    1986-12-01T23:59:59.000Z

    This report describes three data bases that were developed in the Customer System Efficiency Improvement (CSEI) Assessment project to help characterize transmission and distribution (T and D) system losses experienced by utility customers in the Pacific Northwest. A principal objective of this project is to assess the potential for electric energy conservation in the T and D systems of BPA's utility customers. The three data bases provide essential input on the number and operating characteristics of T and D component stocks that was used in another task of the CSEI Project to estimate the conservation supply functions that result from replacing existing stocks with more efficient components (Tepel et al. 1986). This document describes the three data bases, provides a guide to their use, and presents a summary characterization of the principal loss-generating components (lines and transformers) of the region's T and D systems.

  2. Feed gas contaminant removal in ion transport membrane systems

    DOE Patents [OSTI]

    Underwood, Richard Paul (Allentown, PA); Makitka, III, Alexander (Hatfield, PA); Carolan, Michael Francis (Allentown, PA)

    2012-04-03T23:59:59.000Z

    An oxygen ion transport membrane process wherein a heated oxygen-containing gas having one or more contaminants is contacted with a reactive solid material to remove the one or more contaminants. The reactive solid material is provided as a deposit on a support. The one or more contaminant compounds in the heated oxygen-containing gas react with the reactive solid material. The contaminant-depleted oxygen-containing gas is contacted with a membrane, and oxygen is transported through the membrane to provide transported oxygen.

  3. A new power combining and outphasing modulation system for high-efficiency power amplification

    E-Print Network [OSTI]

    Perreault, David J.

    This paper describes a new power combining and outphasing system that provides both high efficiency and linear output control. Whereas conventional outphasing systems utilize two power amplifiers, the system introduced ...

  4. A New Power Combining and Outphasing Modulation System for High-Efficiency Power Amplification

    E-Print Network [OSTI]

    Perreault, David J.

    This paper describes a new power combining and outphasing system that provides both high efficiency and linear output control. Whereas conventional outphasing systems utilize two power amplifiers, the system introduced ...

  5. Transportation Planning & Decision Science Group Transportation Systems Research Group Diane Davidson Keith Kahl

    E-Print Network [OSTI]

    and Peer Evaluation Meetings (AMR) for the Hydrogen and Fuel Cells Program and the Vehicle Technologies of Hydrogen Fuel Cell Vehicle Technology and Prospects for the Future" P.T. Jones ­ "Dynamic Wireless Power-Board Storage Pressure for Hydrogen Fuel Cell Vehicles" Poster Presentations: Stacy Davis ­ "Transportation

  6. Potential Impact of Interfacial Bonding Efficiency on High-Burnup Spent Nuclear Fuel Vibration Integrity during Normal Transportation

    SciTech Connect (OSTI)

    Jiang, Hao [ORNL; Wang, Jy-An John [ORNL; Wang, Hong [ORNL

    2014-01-01T23:59:59.000Z

    Finite element analysis (FEA) was used to investigate the impacts of interfacial bonding efficiency at pellet pellet and pellet clad interfaces on spent nuclear fuel (SNF) vibration integrity. The FEA simulation results were also validated and benchmarked with reverse bending fatigue test results on surrogate rods consisting of stainless steel (SS) tubes with alumina-pellet inserts. Bending moments (M) are applied to the FEA models to evaluate the system responses of the surrogate rods. From the induced curvature, , the flexural rigidity EI can be estimated as EI=M/ . The impacts of interfacial bonding efficiency on SNF vibration integrity include the moment carrying capacity distribution between pellets and clad and the impact of cohesion on the flexural rigidity of the surrogate rod system. The result also indicates that the immediate consequences of interfacial de-bonding are a load carrying capacity shift from the fuel pellets to the clad and a reduction of the composite rod flexural rigidity. Therefore, the flexural rigidity of the surrogate rod and the bending moment bearing capacity between the clad and fuel pellets are strongly dependent on the efficiency of interfacial bonding at the pellet pellet and pellet clad interfaces. The above-noted phenomenon was calibrated and validated by reverse bending fatigue testing using a surrogate rod system.

  7. An efficient numerical terrestrial scheme (ENTS) for fast earth system modelling

    E-Print Network [OSTI]

    Williamson, Mark

    An efficient numerical terrestrial scheme (ENTS) for fast earth system modelling Mark Williamson Working Paper 83 #12;An efficient numerical terrestrial scheme (ENTS) for fast earth system modelling Mark for long time period simulations and large ensemble studies in Earth system models of intermediate

  8. Efficient Transmitters and Receivers for High-Power Wireless Powering Systems

    E-Print Network [OSTI]

    Popovic, Zoya

    Efficient Transmitters and Receivers for High-Power Wireless Powering Systems Zoya Popovic, Tibault of a wireless powering system is maximized when the power transmitter power-added efficiency (PAE), power system, which is valid for any type of wireless power coupling. Experimental results for high

  9. Enhancing Efficiency and Robustness of a Photovoltaic Power System under Partial Shading

    E-Print Network [OSTI]

    Pedram, Massoud

    Enhancing Efficiency and Robustness of a Photovoltaic Power System under Partial Shading Yanzhi}@usc.edu, 2 E-mail: {yhkim, naehyuck}@elpl.snu.ac.kr Abstract Photovoltaic (PV) power systems have been widely in standalone PV systems for continuous power supply. In this paper the efficiency and robustness enhancement

  10. A New Thermal-Conscious System-Level Methodology for Energy-Efficient Processor Voltage Selection

    E-Print Network [OSTI]

    Wang, Yu

    A New Thermal-Conscious System-Level Methodology for Energy-Efficient Processor Voltage Selection a thermal-conscious system-level methodology to make energy-efficient voltage selection (VS) for nanometer), thermal resistance, are integrated and considered in our system models, and their impacts on energy

  11. Impact of the Variable Refrigerant Volume Air Conditioning System on Building Energy Efficiency

    E-Print Network [OSTI]

    Zhu, H.

    2006-01-01T23:59:59.000Z

    ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency Vol.IV-1-3 Impact of the Variable Refrigerant Volume Air Conditioning System on Building Energy Efficiency Huawei Zhu Zhejiang Urban and Rural Planning Design Institute... conditioning system has led to extensive criticism. 2. THE CHARACTERISTICS OF THE VARIABLE REFRIGERANT VOLUME AIR CONDITIONING SYSTEM AND ITS PRESENT APPLICATION ICEBO2006, Shenzhen, China HVAC Technologies for Energy Efficiency Vol.IV-1-3 2...

  12. Creating Parameterized and Energy-Efficient System Generator Designs

    E-Print Network [OSTI]

    Prasanna, Viktor K.

    important, it is desired that the designer can derive energy efficient designs using these design tools efficient designs using MATLAB/Simulink based design tools. The implementation of an adap- tive beamforming. In the paper, we propose a new tool called PyGen, which can be used to develop parameterized and energy

  13. Efficient Data Migration to Conserve Energy in Streaming Media Storage Systems

    E-Print Network [OSTI]

    Qin, Xiao

    Efficient Data Migration to Conserve Energy in Streaming Media Storage Systems Yunpeng Chai, Zhihui. Existing energy conservation techniques are inadequate to achieve high energy efficiency for streaming in this paper a new energy-efficient method called Explicit Energy Saving Disk Cooling or EESDC. EESDC

  14. Energy-Efficient Spectrum Sharing in Relay-Assisted Cognitive Radio Systems

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Energy-Efficient Spectrum Sharing in Relay-Assisted Cognitive Radio Systems (Invited Paper) Mariem of a relevant spectrum game. Two energy-efficient sources communicating with their respective destination energy-efficient sources. Keywords: resource allocation, cognitive radio, cooperative transmission, Nash

  15. Absorber and emitter for solar thermo-photovoltaic systems to achieve efficiency

    E-Print Network [OSTI]

    Fan, Shanhui

    Absorber and emitter for solar thermo- photovoltaic systems to achieve efficiency exceeding-junction solar cell can attain efficiency that exceeds the Shockley-Queisser limit. ©2009 Optical Society and links 1. W. Shockley, and H. J. Queisser, "Detailed Balance Limit of Efficiency of p-n Junction Solar

  16. Assessing the Impact of Measurement Policy on the Accuracy of Certified Energy Efficiency Ratio for Split-System Air Conditioners

    E-Print Network [OSTI]

    Yu, Bingyi

    2013-01-01T23:59:59.000Z

    cooling energy efficiency ratio for split-system air conditioners is not well characterized. This research

  17. How Does Your Data Center Measure Up? Energy Efficiency Metrics and Benchmarks for Data Center Infrastructure Systems

    E-Print Network [OSTI]

    Mathew, Paul

    2009-01-01T23:59:59.000Z

    the efficiency of cooling systems in data centers are nofor data centers in the LBNL database Cooling system

  18. Efficiency and Current in a correlated ratchet

    E-Print Network [OSTI]

    Bao-Quan Ai; Xian-Ju Wang; Guo-Tao Liu; De-Hua Wen; Wei Chen; Liang-Gang Liu

    2007-09-15T23:59:59.000Z

    We present a detailed study of the transport and the efficiency of a ratchet system in a periodic potential in the presence of correlated noises. The current and the efficiency of the system are investigated. It is found that, when the potential is spatially symmetric, the correlation between the two noises can induce a net transport. The efficiency shows many interesting features as a function of the applied force, the noise intensity, the external load, etc. The efficiency can be maximized as a function of noise intensity (or temperature), which shows that the thermal fluctuation can facilitate the efficiency of energy transformation.

  19. Evaluation of Storage for Transportation Equipment, Unfueled Convertors, and Fueled Convertors at the INL for the Radioisotope Power Systems Program

    SciTech Connect (OSTI)

    S. G. Johnson; K. L. Lively

    2010-05-01T23:59:59.000Z

    This report contains an evaluation of the storage conditions required for several key components and/or systems of the Radioisotope Power Systems (RPS) Program at the Idaho National Laboratory (INL). These components/systems (transportation equipment, i.e., type ‘B’ shipping casks and the radioisotope thermo-electric generator transportation systems (RTGTS), the unfueled convertors, i.e., multi-hundred watt (MHW) and general purpose heat source (GPHS) RTGs, and fueled convertors of several types) are currently stored in several facilities at the Materials and Fuels Complex (MFC) site. For various reasons related to competing missions, inherent growth of the RPS mission at the INL and enhanced efficiency, it is necessary to evaluate their current storage situation and recommend the approach that should be pursued going forward for storage of these vital RPS components and systems. The reasons that drive this evaluation include, but are not limited to the following: 1) conflict with other missions at the INL of higher priority, 2) increasing demands from the INL RPS Program that exceed the physical capacity of the current storage areas and 3) the ability to enhance our current capability to care for our equipment, decrease maintenance costs and increase the readiness posture of the systems.

  20. Lattice gas automata for flow and transport in geochemical systems

    SciTech Connect (OSTI)

    Janecky, D.R.; Chen, S.; Dawson, S.; Eggert, K.C.; Travis, B.J.

    1992-05-01T23:59:59.000Z

    Lattice gas automata models are described, which couple solute transport with chemical reactions at mineral surfaces within pore networks. Diffusion in a box calculations are illustrated, which compare directly with Fickian diffusion. Chemical reactions at solid surfaces, including precipitation/dissolution, sorption, and catalytic reaction, can be examined with the model because hydrodynamic transport, solute diffusion and mineral surface processes are all treated explicitly. The simplicity and flexibility of the approach provides the ability to study the interrelationship between fluid flow and chemical reactions in porous materials, at a level of complexity that has not previously been computationally possible.

  1. Lattice gas automata for flow and transport in geochemical systems

    SciTech Connect (OSTI)

    Janecky, D.R.; Chen, S.; Dawson, S.; Eggert, K.C.; Travis, B.J.

    1992-01-01T23:59:59.000Z

    Lattice gas automata models are described, which couple solute transport with chemical reactions at mineral surfaces within pore networks. Diffusion in a box calculations are illustrated, which compare directly with Fickian diffusion. Chemical reactions at solid surfaces, including precipitation/dissolution, sorption, and catalytic reaction, can be examined with the model because hydrodynamic transport, solute diffusion and mineral surface processes are all treated explicitly. The simplicity and flexibility of the approach provides the ability to study the interrelationship between fluid flow and chemical reactions in porous materials, at a level of complexity that has not previously been computationally possible.

  2. Energy Efficiency Evaluation of Guangzhou West Tower Façade System

    E-Print Network [OSTI]

    Meng, Q.; Zhang, L.

    2006-01-01T23:59:59.000Z

    of Public Buildings”, typical meteorological yearly data for Guangzhou were used and revised according to architectural character of Guangzhou West Tower. The energy efficiency design of a single skin façade and active airflow curtain wall was analyzed by a...

  3. Boiler System Efficiency Improves with Effective Water Treatment

    E-Print Network [OSTI]

    Bloom, D.

    Water treatment is an important aspect of boiler operation which can affect efficiency or result in damage if neglected. Without effective water treatment, scale can form on boiler tubes, reducing heat transfer, and causing a loss of boiler...

  4. Energy Efficient Scheduling for Real-Time Systems

    E-Print Network [OSTI]

    Gupta, Nikhil

    2012-02-14T23:59:59.000Z

    The goal of this dissertation is to extend the state of the art in real-time scheduling algorithms to achieve energy efficiency. Currently, Pfair scheduling is one of the few scheduling frameworks which can optimally schedule a periodic real...

  5. Sputtered Nickel Oxide Thin Film for Efficient Hole Transport Layer in Polymer-Fullerene Bulk-Heterojunction Organic Solar Cell

    SciTech Connect (OSTI)

    Widjonarko, N. E.; Ratcliff, E. L.; Perkins, C. L.; Sigdel, A. K.; Zakutayev, A.; Ndione, P. F.; Gillaspie, D. T.; Ginley, D. S.; Olson, D. C.; Berry, J. J.

    2012-03-01T23:59:59.000Z

    Bulk-heterojunction (BHJ) organic photovoltaics (OPV) are very promising thin film renewable energy conversion technologies due to low production cost by high-throughput roll-to-roll manufacturing, an expansive list of compatible materials, and flexible device fabrication. An important aspect of OPV device efficiency is good contact engineering. The use of oxide thin films for this application offers increased design flexibility and improved chemical stability. Here we present our investigation of radio frequency magnetron sputtered nickel oxide (NiO{sub x}) deposited from oxide targets as an efficient, easily scalable hole transport layer (HTL) with variable work-function, ranging from 4.8 to 5.8 eV. Differences in HTL work-function were not found to result in statistically significant changes in open circuit voltage (V{sub oc}) for poly(3-hexylthiophene):[6,6]-phenyl-C{sub 61}-butyric acid methyl ester (P3HT:PCBM) BHJ device. Ultraviolet photoemission spectroscopy (UPS) characterization of the NiO{sub x} film and its interface with the polymer shows Fermi level alignment of the polymer with the NiO{sub x} film. UPS of the blend also demonstrates Fermi level alignment of the organic active layer with the HTL, consistent with the lack of correlation between V{sub oc} and HTL work-function. Instead, trends in j{sub sc}, V{sub oc}, and thus overall device performance are related to the surface treatment of the HTL prior to active layer deposition through changes in active layer thickness.

  6. Interplanetary particle transport simulation for warning system for aviation exposure to solar energetic particles

    E-Print Network [OSTI]

    Kubo, Yûki; Sato, Tatsuhiko

    2015-01-01T23:59:59.000Z

    Solar energetic particles (SEPs) are one of the extreme space weather phenomena. A huge SEP event increases the radiation dose received by aircrews, who should be warned of such events as early as possible. We developed a warning system for aviation exposure to SEPs. This article describes one component of the system, which calculates the temporal evolution of the SEP intensity and the spectrum immediately outside the terrestrial magnetosphere. To achieve this, we performed numerical simulations of SEP transport in interplanetary space, in which interplanetary SEP transport is described by the focused transport equation. We developed a new simulation code to solve the equation using a set of stochastic differential equations. In the code, the focused transport equation is expressed in a magnetic field line coordinate system, which is a non-orthogonal curvilinear coordinate system. An inverse Gaussian distribution is employed as the injection profile of SEPs at an inner boundary located near the Sun. We applie...

  7. Framework for designing regional planning architecture for APTS-enabled regional multimodal public transportation system

    E-Print Network [OSTI]

    Zakaria, Zulina

    2004-01-01T23:59:59.000Z

    Unsustainable transportation systems have been the cause of many problems facing urban areas around the world. Lack of regard for sustainable development considerations by those responsible for planning and implementing ...

  8. 1.221J / 11.527J / ESD.201J Transportation Systems, Fall 2002

    E-Print Network [OSTI]

    Sussman, Joseph

    Introduces transportation as a large-scale, integrated system that interacts directly with the social, political, and economic aspects of contemporary society. Fundamental elements and issues shaping passenger and freight ...

  9. Transportation Analysis | Clean Energy | ORNL

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

    Transportation Analysis SHARE Transportation Analysis Transportation Analysis efforts at Oak Ridge National Laboratory contribute to the efficient, safe, and free movement of...

  10. Controlling chaotic transport in Hamiltonian systems Guido Ciraolo

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in "turbulent" electric fields across the confining magnetic field in controlled thermonuclear fusion devices thermonuclear fusion, [1]. Anomalous transport, being of noncollisional origin, is currently attributed to the presence of turbulent fluctuations of - mainly - electric field in fusion plasmas. Several years ago

  11. Integrated transport and renewable energy systems B. V. Mathiesen*

    E-Print Network [OSTI]

    on second generation biofuel production for the substitution of oil products [4]. Worldwide, the focus it. Biomass is a limited resource and it is important to avoid effecting the production, transport gains increasing international attention due to its large oil dependency of app. 95 per cent

  12. An energy-efficient communication system for ad hoc wireless and sensor networks

    E-Print Network [OSTI]

    Tetteh, William Nii Adjetey

    2007-01-01T23:59:59.000Z

    Existing ad hoc wireless and sensor network systems often trade off energy against performance. As such, it is hard to find a single deployable system that supports high data rates while maintaining energy-efficient ...

  13. Energy Efficiency Analysis of MISO-OFDM Communication Systems Considering Power and Capacity Constraints

    E-Print Network [OSTI]

    Wang, Cheng-Xiang

    Energy Efficiency Analysis of MISO-OFDM Communication Systems Considering Power and Capacity efficiency of multi-input single-output and orthogonal frequency division multiplex- ing (MISO problem of MISO-OFDM communication systems, the minimum subchannel transmission power is analyzed

  14. High efficiency photovoltaic power conditioning system Hosam Sharabash, DVMM Krishna, Norbert Frhleke and Joachim Bcker

    E-Print Network [OSTI]

    Paderborn, Universität

    High efficiency photovoltaic power conditioning system Hosam Sharabash, DVMM Krishna, Norbert) with high efficiency under wide input voltage range of the photovoltaic array is introduced. In fact, Germany sharabash@lea.upb.de Abstract A new topology for photovoltaic Power Conditioning System (PCS

  15. Classification of transportation packaging and dry spent fuel storage system components according to importance to safety

    SciTech Connect (OSTI)

    McConnell, J.W., Jr; Ayers, A.L. Jr; Tyacke, M.J. [Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)

    1996-02-01T23:59:59.000Z

    This report provides a graded approach for classification of components used in transportation packaging and dry spent fuel storage systems. This approach provides a method for identifying, the classification of components according to importance to safety within transportation packagings and dry spent fuel storage systems. Record retention requirements are discussed to identify the documentation necessary to validate that the individual components were fabricated in accordance with their assigned classification. A review of the existing regulations pertaining to transportation packagings and dry storage systems was performed to identify current requirements The general types of transportation packagings and dry storage systems were identified. Discussions were held with suppliers and fabricators of packagings and storage systems to determine current practices. The methodology used in this report is based on Regulatory Guide 7.10, Establishing Quality Assurance Programs for Packaging Used in the Transport of Radioactive Material. This report also includes a list of generic components for each of the general types of transportation packagings and spent fuel storage systems. The safety importance of each component is discussed, and a classification category is assigned.

  16. Efficient simulation of the impact of interface grading on the transport and optical properties of semiconductor heterostructures

    SciTech Connect (OSTI)

    Lü, X.; Schrottke, L.; Luna, E.; Grahn, H. T. [Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5–7, 10117 Berlin (Germany)

    2014-06-09T23:59:59.000Z

    An efficient model is proposed to evaluate the impact of interface grading on the properties of semiconductor heterostructures. In the plane-wave approximation, the interface grading is taken into account by simply multiplying the Fourier components of the potential by a Gaussian function, which results only in a very small increase of the computation time. We show that the interface grading may affect the transition energies, the field strength for resonant coupling of subbands, and even the miniband formation in complex systems such as quantum-cascade lasers. This model provides a convenient tool for the incorporation of interface grading into the design of heterostructures.

  17. High Efficiency Engine Systems Development and Evaluation | Department of

    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 DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEN TOTechnology ValidationCombustion

  18. Investigating potential light-duty efficiency improvements through simulation of turbo-compounding and waste-heat recovery systems

    SciTech Connect (OSTI)

    Edwards, Kevin Dean [ORNL; Wagner, Robert M [ORNL; Briggs, Thomas E [ORNL

    2010-01-01T23:59:59.000Z

    Modern diesel engines used in light-duty transportation applications have peak brake thermal efficiencies in the range of 40-42% for high-load operation with substantially lower efficiencies at realistic road-load conditions. Thermodynamic energy and exergy analysis reveals that the largest losses from these engines are due to combustion irreversibility and heat loss to the coolant, through the exhaust, and by direct convection and radiation to the environment. Substantial improvement in overall engine efficiency requires reducing or recovering these losses. Unfortunately, much of the heat transfer either occurs at relatively low temperatures resulting in large entropy generation (such as in the air-charge cooler), is transferred to low-exergy flow streams (such as the oil and engine coolant), or is radiated or convected directly to the environment. While there are significant opportunities for recovery from the exhaust and EGR cooler for heavy-duty applications, achieving similar benefits for light-duty applications is complicated by transient, low-load operation at typical driving conditions and competition with the turbocharger and aftertreatment system for the limited thermal resources. We have developed an organic Rankine cycle model using GT-Suite to investigate the potential for efficiency improvement through waste-heat recovery from the exhaust and EGR cooler of a light-duty diesel engine. The model is used to examine the effects of efficiency-improvement strategies such as cylinder deactivation, use of advanced materials and improved insulation to limit ambient heat loss, and turbo-compounding on the steady-state performance of the ORC system and the availability of thermal energy for downstream aftertreatment systems. Results from transient drive-cycle simulations are also presented, and we discuss strategies to address operational difficulties associated with transient drive cycles and balancing the thermal requirements of waste-heat recovery, turbocharging or turbo-compounding, and exhaust aftertreatment.

  19. Efficient Bulk Data Replication for the Earth System Grid

    E-Print Network [OSTI]

    Sim, Alex

    2010-01-01T23:59:59.000Z

    Bulk Data Replication for the Earth System Grid Alex Sim 1 ,CA 94720, USA Abstract The Earth System Grid (ESG) communityNetLogger 1. Introduction The Earth System Grid (ESG) [1

  20. Energy efficient scheduling techniques for real-time embedded systems 

    E-Print Network [OSTI]

    Prathipati, Rajesh Babu

    2004-09-30T23:59:59.000Z

    Battery-powered portable embedded systems have been widely used in many applications. These embedded systems have to concurrently perform a multitude of complex tasks under stringent time constraints. As these systems ...

  1. Comparison of Control Strategies for Energy Efficient Building HVAC Systems

    E-Print Network [OSTI]

    Maasoumy, Mehdi; Sangiovanni-Vincentelli, Alberto

    2014-01-01T23:59:59.000Z

    optimal control design for HVAC systems. In Dynamic SystemOpti- mal control of HVAC systems in the presence of imper-consumption minimization of hvac sys- tems using model

  2. Efficient Bulk Data Replication for the Earth System Grid

    E-Print Network [OSTI]

    Sim, Alex

    2010-01-01T23:59:59.000Z

    for the Earth System Grid Alex Sim 1 , Dan Gunter 1 , VijayaUSA Abstract The Earth System Grid (ESG) community faces theIntroduction The Earth System Grid (ESG) [1] community faces

  3. Comparative assessment of five potential sites for hydrothermal-magma systems: energy transport

    SciTech Connect (OSTI)

    Hardee, H.C.

    1980-09-01T23:59:59.000Z

    A comparative assessment of five sites is being prepared as part of a Continental Scientific Drilling Program (CSDP) review of thermal regimes for the purpose of scoping areas for future research and drilling activities. This background report: discusses the various energy transport processes likely to be encountered in a hydrothermal-magma system, reviews related literature, discusses research and field data needs, and reviews the sites from an energy transport viewpoint. At least three major zones exist in the magma-hydrothermal transport system: the magma zone, the hydrothermal zone, and the transition zone between the two. Major energy transport questions relate to the nature and existence of these zones and their evolution with time. Additional energy transport questions are concerned with the possible existence of critical state and super-critical state permeable convection in deep geothermal systems. A review of thermal transport models emphasizes the fact that present transport models and computational techniques far outweigh the scarcity and quality of deep field data.

  4. Implications of Low Particulate Matter Emissions on System Fuel Efficiency for High Efficiency Clean Combustion

    SciTech Connect (OSTI)

    Parks, II, James E [ORNL; Prikhodko, Vitaly Y [ORNL] [ORNL

    2009-01-01T23:59:59.000Z

    Advanced diesel combustion regimes such as High Efficiency Clean Combustion (HECC) offer the benefits of reduced engine out NOX and particulate matter (PM) emissions. Lower PM emissions during advanced combustion reduce the demand on diesel particulate filters (DPFs) and can, thereby, reduce the fuel penalty associated with DPF regeneration. In this study, a SiC DPF was loaded and regenerated on a 1.7-liter 4-cylinder diesel engine operated in conventional and advanced combustion modes at different speed and load conditions. A diesel oxidation catalyst (DOC) and a lean NOX trap (LNT) were also installed in the exhaust stream. Five steady-state speed and load conditions were weighted to estimate Federal Test Procedure (FTP) fuel efficiency. The DPF was loaded using lean-rich cycling with frequencies that resulted in similar levels of NOX emissions downstream of the LNT. The pressure drop across the DPF was measured at a standard point (1500 rpm, 5.0 bar) before and after loading, and a P rise rate was determined for comparison between conventional and advanced combustion modes. Higher PM emissions in conventional combustion resulted in a higher rate of backpressure rise across the DPF at all of the load points leading to more frequent DPF regenerations and higher fuel penalty. The fuel penalty during conventional combustion was 4.2% compared with 3.1% for a mixture of conventional and advanced modes.

  5. George Mason University Center for Air Transportation Systems Research

    E-Print Network [OSTI]

    Management System IFR Instrument Flight Rules MTOW Maximum certified Takeoff Weight FAA Federal Aviation Administration PRM Precision Runway Monitor System ICAO International Civil Aviation Organization #12;George

  6. Electrical Equipment Replacement: Energy Efficiency versus System Compatibility

    E-Print Network [OSTI]

    Massey, G. W.

    2005-01-01T23:59:59.000Z

    upgrading electrical equipment to energy efficient models, including conductor sizing, overcurrent protective devices, grounding, and harmonics. The pages that follow provide guidance in the decision-making process when replacing electrical equipment... equipment. Several areas of compatibility must be addressed for equipment to work properly. Critical areas of concern are conductor sizing, overcurrent protection devices, grounding, and harmonics. Conductor Sizing Conductors are sized...

  7. Biological optimization systems for enhancing photosynthetic efficiency and methods of use

    DOE Patents [OSTI]

    Hunt, Ryan W.; Chinnasamy, Senthil; Das, Keshav C.; de Mattos, Erico Rolim

    2012-11-06T23:59:59.000Z

    Biological optimization systems for enhancing photosynthetic efficiency and methods of use. Specifically, methods for enhancing photosynthetic efficiency including applying pulsed light to a photosynthetic organism, using a chlorophyll fluorescence feedback control system to determine one or more photosynthetic efficiency parameters, and adjusting one or more of the photosynthetic efficiency parameters to drive the photosynthesis by the delivery of an amount of light to optimize light absorption of the photosynthetic organism while providing enough dark time between light pulses to prevent oversaturation of the chlorophyll reaction centers are disclosed.

  8. Transportation Efficiency Strategies

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2, 2003Tool ofTopoCarbon|defaultSolarTechnology

  9. Lean Gasoline System Development for Fuel Efficient Small Car | Department

    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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PMDepartment ofs o u t h e a s t e rthe Nationof

  10. Lean Gasoline System Development for Fuel Efficient Small Car | Department

    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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment ofLetter Report:40PMDepartment ofs o u t h e a s t e rthe

  11. High Efficiency Engine Systems Development and Evaluation | Department of

    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 DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEN TOTechnology ValidationCombustion and

  12. Increased Engine Efficiency via Advancements in Engine Combustion Systems |

    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 DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet),EnergyImprovement of theResponses to Public CommentsofFilters

  13. Integrated Solar Thermochemical Reaction System for High Efficiency

    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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment of EnergyIndustry Research U.S. Department of

  14. Integration of Nontraditional Isotopic Systems Into Reaction-Transport

    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 DataDepartment of Energy Your Density Isn't YourTransport(FactDepartment of EnergyIndustry ResearchPerspective | DepartmentModels of EGS

  15. High Quality Down Lighting Luminaire with 73% Overall System Efficiency

    SciTech Connect (OSTI)

    Robert Harrison; Steven C. Allen; Joseph Bernier; Robert Harrison

    2010-08-31T23:59:59.000Z

    This report summarizes work to develop a high flux, high efficiency LED-based downlight at OSRAM SYLVANIA under US Department of Energy contract DE-FC26-08NT01582. A new high power LED and electronic driver were developed for these downlights. The LED achieved 100 lumens per watt efficacy and 1700 lumen flux output at a correlated color temperature of 3500K. The driver had 90% electrical conversion efficiency while maintaining excellent power quality with power factor >0.99, and total harmonic distortion <10%. Two styles of downlights using the LED and driver were shown to exceed the project targets for steady-state luminous efficacy and flux of 70 lumens per watt and 1300 lumens, respectively. Compared to similar existing downlights using compact fluorescent or LED sources, these downlights had much higher efficacy at nearly the same luminous flux.

  16. Analysis of radiation doses from operation of postulated commercial spent fuel transportation systems: Main report

    SciTech Connect (OSTI)

    Schneider, K.J.; Hostick, C.J.; Ross, W.A.; Peterson, R.W.; Smith, R.I.; Stiles, D.L.; Daling, P.M.; Weakley, S.A.; Grinde, R.B.; Young, J.R.

    1987-11-01T23:59:59.000Z

    This report contains a system study of estimated radiation doses to the public and workers resulting from the transport of spent fuel from commercial nuclear power reactors to a geologic repository. The report contains a detailed breakdown of activities and a description of time/distance/dose-rate estimates for each activity within the system. Collective doses are estimated for each of the major activities at the reactor site, in transit, and at the repository receiving facility. Annual individual doses to the maximally exposed individuals or groups of individuals are also estimated. A total of 17 alternatives and subalternatives to the postulated reference transportation system are identified, conceptualized, and their dose-reduction potentials and costs estimated. Resulting ratios of ..delta..cost/..delta..collective system dose for each alternative relative to the postulated reference transportation system are given. Most of the alternatives evaluated are estimated to provide both cost and dose reductions. Major reductions in transportation system dose and cost are estimated to result from using higher-capacity rail and truck casks, and particularly when replacing legalweight truck casks with ''advanced design'' overweight truck casks. The greatest annual dose reduction to the highest exposed individual workers (i.e., at the repository) is estimated to be achieved by using remote handling equipment for the cask handling operations at the repository. Additional shielding is also effective in reducing doses to both radiation workers at the reactor and repository and to transport workers. 69 refs., 36 figs., 156 tabs.

  17. Advanced Klystrons for High Efficiency Accelerator Systems - Final Report

    SciTech Connect (OSTI)

    Read, Michael; Ives, Robert Lawrence

    2014-03-26T23:59:59.000Z

    This program explored tailoring of RF pulses used to drive accelerator cavities. Simulations indicated that properly shaping the pulse risetime to match accelerator cavity characteristics reduced reflected power and increased total efficiency. Tailoring the pulse requires a high power, gridded, klystron to shape the risetime while also controlling the beam current. The Phase I program generated a preliminary design of a gridded electron gun for a klystron producing 5-10 MW of RF power. This required design of a segmented cathode using Controlled Porosity Reservoir cathodes to limit power deposition on the grid. The program was successful in computationally designing a gun producing a high quality electron beam with grid control. Additional analysis of pulse tailoring indicated that technique would only be useful for cavity drive pulses that were less than approximately 2-3 times the risetime. Otherwise, the efficiency gained during the risetime of the pulse became insignificant when considering the efficiency over the entire pulse. Consequently, it was determined that a Phase II program would not provide sufficient return to justify the cost. Never the less, other applications for a high power gridded gun are currently being pursued. This klystron, for example, would facilitate development inverse Comptom x-ray sources by providing a high repetition rate (10 -100 kHz) RF source.

  18. Design of control for efficiency of AUV power systems

    E-Print Network [OSTI]

    Ware, Laura M. (Laura Marie)

    2012-01-01T23:59:59.000Z

    The MIT Rapid Development Group designed and built an internal combustion hybrid recharging system for the REMUS 600 Autonomous Underwater Vehicle (AUV) in collaboration with the MIT Lincoln Laboratory. This power system ...

  19. Energy efficiency improvements in Chinese compressed air systems

    E-Print Network [OSTI]

    McKane, Aimee; Li, Li; Li, Yuqi; Taranto, T.

    2008-01-01T23:59:59.000Z

    system pressure problem because VSD compressors are able toproblems, the enterprise should first consider whether the existing array of compressorsproblems When enterprises focus their attention on their compressed air system, it is mainly on the compressors.

  20. Cloud-Based Transportation Management System Delivers Savings | Department

    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 Rank EERE: Alternative FuelsNovember 13, 2014 BuildingEnergy Efficiency and Renewable EnergyClosedCommitteeof

  1. Direct Digital Control in Air Conditioning Systems for Energy Efficiency 

    E-Print Network [OSTI]

    Liu, W.; Ye, A.; Li, D.

    2006-01-01T23:59:59.000Z

    connected by lines that represent the data flow. The process is depicted with symbols as on electrical schematics and pneumatic control diagrams. Graphical diagrams are created and the detailed data is entered in background menus or screens... and control system Energy management and control system (EMCS) technology has evolved over the past three decades from pneumatic and mechanical devices to direct digital controls (DDC) or computer-based controllers and systems. Today's EMCS systems...

  2. Curl flux, coherence, and population landscape of molecular systems: Nonequilibrium quantum steady state, energy (charge) transport, and thermodynamics

    SciTech Connect (OSTI)

    Zhang, Z. D. [Department of Physics and Astronomy, SUNY Stony Brook, New York 11794 (United States); Wang, J. [Department of Physics and Astronomy, SUNY Stony Brook, New York 11794 (United States); Department of Chemistry, SUNY Stony Brook, New York 11794 (United States); State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (China)

    2014-06-28T23:59:59.000Z

    We established a theoretical framework in terms of the curl flux, population landscape, and coherence for non-equilibrium quantum systems at steady state, through exploring the energy and charge transport in molecular processes. The curl quantum flux plays the key role in determining transport properties and the system reaches equilibrium when flux vanishes. The novel curl quantum flux reflects the degree of non-equilibriumness and the time-irreversibility. We found an analytical expression for the quantum flux and its relationship to the environmental pumping (non-equilibriumness quantified by the voltage away from the equilibrium) and the quantum tunneling. Furthermore, we investigated another quantum signature, the coherence, quantitatively measured by the non-zero off diagonal element of the density matrix. Populations of states give the probabilities of individual states and therefore quantify the population landscape. Both curl flux and coherence depend on steady state population landscape. Besides the environment-assistance which can give dramatic enhancement of coherence and quantum flux with high voltage at a fixed tunneling strength, the quantum flux is promoted by the coherence in the regime of small tunneling while reduced by the coherence in the regime of large tunneling, due to the non-monotonic relationship between the coherence and tunneling. This is in contrast to the previously found linear relationship. For the systems coupled to bosonic (photonic and phononic) reservoirs the flux is significantly promoted at large voltage while for fermionic (electronic) reservoirs the flux reaches a saturation after a significant enhancement at large voltage due to the Pauli exclusion principle. In view of the system as a quantum heat engine, we studied the non-equilibrium thermodynamics and established the analytical connections of curl quantum flux to the transport quantities such as energy (charge) transfer efficiency, chemical reaction efficiency, energy dissipation, heat and electric currents observed in the experiments. We observed a perfect transfer efficiency in chemical reactions at high voltage (chemical potential difference). Our theoretical predicted behavior of the electric current with respect to the voltage is in good agreements with the recent experiments on electron transfer in single molecules.

  3. POEM: Power-efficient Occupancy-based Energy Management System

    E-Print Network [OSTI]

    Cerpa, Alberto E.

    for Heating Ventilation and Air-Conditioning (HVAC) systems. Current HVAC systems only condition based to reach target temperatures and minimize ventilation requirements. Based on live tests of the system, we, Measurement, Performance Keywords Occupancy, HVAC, Ventilation, Energy savings 1. INTRODUCTION Permission

  4. Advanced Vehicles Group: Center for Transportation Technologies and Systems

    SciTech Connect (OSTI)

    Not Available

    2008-08-01T23:59:59.000Z

    Describes R&D in advanced vehicle systems and components (e.g., batteries) by NREL's Advanced Vehicles Group.

  5. A high-efficiency indirect lighting system utilizing the solar 1000 sulfur lamp

    SciTech Connect (OSTI)

    Siminovitch, M.; Gould, C.; Page, E.

    1997-06-01T23:59:59.000Z

    High-lumen light sources represent unique challenges and opportunities for the design of practical and efficient interior lighting systems. High-output sources require a means of large-scale distribution and avoidance of high-luminance glare while providing efficient delivery. An indirect lighting system has been developed for use with a 1,000 Watt sulfur lamp that efficiently utilizes the high-output source to provide quality interior lighting. This paper briefly describes the design and initial testing of this new system.

  6. Particle transport in low-energy ventilation systems. Part 1: theory of steady states

    E-Print Network [OSTI]

    Bolster, Diogo

    , such as that pro- vided by a conventional overhead heating, ventilating and air-conditioning system, is mixingParticle transport in low-energy ventilation systems. Part 1: theory of steady states Introduction of this energy is spent on ventilation of buildings with summer time cooling account for almost 10% of the US

  7. Microfluidic systems and methods for transport and lysis of cells and analysis of cell lysate

    DOE Patents [OSTI]

    Culbertson, Christopher T [Oak Ridge, TN; Jacobson, Stephen C [Knoxville, TN; McClain, Maxine A [Knoxville, TN; Ramsey, J Michael [Knoxville, TN

    2008-09-02T23:59:59.000Z

    Microfluidic systems and methods are disclosed which are adapted to transport and lyse cellular components of a test sample for analysis. The disclosed microfluidic systems and methods, which employ an electric field to rupture the cell membrane, cause unusually rapid lysis, thereby minimizing continued cellular activity and resulting in greater accuracy of analysis of cell processes.

  8. Quantum pumping in closed systems, adiabatic transport, and the Kubo formula Doron Cohen

    E-Print Network [OSTI]

    Cohen, Doron

    Quantum pumping in closed systems, adiabatic transport, and the Kubo formula Doron Cohen Department received 30 June 2003; published 3 October 2003 Quantum pumping in closed systems is considered. We explain that the Kubo formula contains all the physically relevant ingredients for the calculation of the pumped charge

  9. Transfer stations and long-haul transport systems

    SciTech Connect (OSTI)

    Walsh, P.; Pferdehirt, W.; O'Leary, P. (Univ. of Wisconsin, Madison, WI (United States). Solid and Hazardous Waste Education Center)

    1993-12-01T23:59:59.000Z

    Transfer stations can be an important link between pickup at the curb and ultimate disposal, often allowing significant savings in the total costs to move wastes from the generator to the disposal site. A transfer station is simply a facility where collection trucks bring collected materials for loading into larger vehicles and subsequent shipment, usually to a landfill, waste-to-energy plant, or composting facility. Transferred wastes are typically shipped out in large trailers, but barges and railroad cars are also transport options. Although modern transfer stations usually include some provisions for handling recyclables, solid waste transfer dominates the operation of most facilities. Some communities have begun experimenting with transferring commingled, source-separated recyclables to regional processing centers. Transfer facilities can be as simple as a pavement slab and a front-end loader. Alternatively, transfer stations can cost millions of dollars and move thousands of tons of waste each day.

  10. Ultra Efficient Combined Heat, Hydrogen, and Power System

    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 DataDepartment of Energy Your DensityEnergy U.S.-China Electric Vehicle and BatteryUS-EU-Japan WorkingUSEA/Johnson USVIUltra Efficient

  11. Efficient Thermally Variable Cooling System | 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 DataDepartment of Energy Your Density Isn't Your Destiny:RevisedAdvisory BoardNucleate Boiling Efficient Cooling in EnginesEnergy 0

  12. Energy-Efficient, Utility Accrual Scheduling under Resource Constraints for Mobile Embedded Systems

    E-Print Network [OSTI]

    Ravindran, Binoy

    Corporation Redmond, WA 98052, USA pengli@microsoft.com Abstract We present an energy-efficient, utility voltage scaling (DVS) is a common mechanism studied in the past to save CPU energy [3Energy-Efficient, Utility Accrual Scheduling under Resource Constraints for Mobile Embedded Systems

  13. Energy Aware Paradigm for Energy Efficient ICT: a Systemic Approach Sergio Ricciardi

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Energy Aware Paradigm for Energy Efficient ICT: a Systemic Approach Sergio Ricciardi Technical) Jordi Girona 3 08034 Barcelona, Spain +34 93 4016982 pareta@ac.upc.edu ABSTRACT Energy is imposing as the new constraint in the ICT sector and the problem of energy efficient in ICT has consequently arisen

  14. Energy Efficiency: The New Holy Grail of Data Management Systems Research

    E-Print Network [OSTI]

    Energy Efficiency: The New Holy Grail of Data Management Systems Research Stavros Harizopoulos HP energy-friendly hardware. Despite the growing body of research in power management techniques, there has been little work to date on energy efficiency from a data management software per- spective

  15. Power and Area Efficient Turbo Decoder Implementation for Mobile Wireless Systems

    E-Print Network [OSTI]

    Arslan, Tughrul

    Power and Area Efficient Turbo Decoder Implementation for Mobile Wireless Systems J. H. Han1 , A. T Abstract-- The authors present a low power and area efficient turbo soft-input soft-output (SISO) decoder. Our turbo SISO decoder is based on trace back algorithm (TBA) and saves area and power by replacing

  16. Steam Power Partnership: Improving Steam System Efficiency Through Marketplace Partnerships 

    E-Print Network [OSTI]

    Jones, T.

    1997-01-01T23:59:59.000Z

    been great advances in boiler control technology as older pneumatic and analog electronic control systems have given way to digital, computer-based distributed control systems. These systems are more reliable and can extend boiler life. Modem... Several software tools are now available for individual steam technologies, such as steam traps, insulation, and boiler controls. The Partnership should investigate linking these software tools together and incorporating other steam "modules" (i...

  17. International Journal of Fuzzy Systems, Vol. 7, No. 2, June 2005 85 Evolutionary Agents for Intelligent Transport Systems

    E-Print Network [OSTI]

    Lee, Jonathan

    soft goal is introduced to facilitate the evolution process. Genetic programming operators are employed. Introduction Due to the growing number of cities and transportation networks, traffic congestion, accidents system in distributed environments, the research on Multi-Agent System (MAS) has invoked an increasing

  18. Technology and System Level Demonstration of Highly Efficient...

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

    + extended idle) representative of real world, line haul applications. Objective 3: Technology scoping and demonstration of a 55% BTE engine system. Engine tests, component...

  19. Advanced, Energy-Efficient Hybrid Membrane System for Industrial...

    Energy Savers [EERE]

    (1 slide) Project Objective Develop and demonstrate advanced hybrid industrial water treatment system that will... Cost-effectively enable at least 50% water reuse...

  20. System Effects of High Efficiency Filters in Homes

    E-Print Network [OSTI]

    Walker, Iain S.

    2014-01-01T23:59:59.000Z

    Air Flow in Residential Air Conditioning Systems. ASHRAErefrigerating and Air-conditioning Engineers, Atlanta, GA.refrigerating and Air-conditioning Engineers, Atlanta, GA.

  1. Lean Gasoline System Development for Fuel Efficient Small Car...

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

    and Vehicle Technologies Program Annual Merit Review and Peer Evaluation ace063smith2011o.pdf More Documents & Publications Lean Gasoline System Development for Fuel...

  2. Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact...

    Office of Environmental Management (EM)

    metal treatment and other industrial processes. Excess reducing gas can be utilized in a low-temperature, bottoming cycle fuel cell incorporated into the CHHP system to increase...

  3. Lean Gasoline System Development for Fuel Efficient Small Car...

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

    and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting ace063smith2013o.pdf More Documents & Publications Lean Gasoline System Development for Fuel...

  4. Improved Combustion Efficiencies - Control Systems for Process Heaters and Boilers 

    E-Print Network [OSTI]

    Varma, A. C.; Prengle, H. W.

    1979-01-01T23:59:59.000Z

    Houston, TX, April 22-25, 1979 TABLE 2 - BAILEY BOILER CONTROL SYSTEMS: FUEL SAVINGS &PAYOUT[4] Control System Estimated Installation Cost(l)($) Fuel Demand F(M BTU/hr) Fuel Savings p (%) Savings S ($/yr) First Year Savings Sl ($/yr...

  5. LOW COST, HIGH EFFICIENCY REVERSIBLE FUEL CELL SYSTEMS

    E-Print Network [OSTI]

    Boulevard Cleveland, Ohio 44108 216-541-1000 Abstract Fuel cell technologies are described in the 2001 DOE. In electrolyzer mode, the reversible system uses electricity and thermal energy to convert pure water into fuel (hydrogen and oxygen). TMI's reversible system uses the waste thermal energy produced during electricity

  6. Risk Assessment of Railway Transportation Systems using Timed Fault Trees

    E-Print Network [OSTI]

    Miller, Alice

    Lyub, , Alice Millerb , Chris Johnsonb , Tingdi Zhaoa a School of Reliability and Systems Engineering. Introduction System safety relies on robust safety design, good management, and e - cient maintenance [1, University of Glasgow, Glasgow, United Kingdom Abstract Safety is an essential requirement for railway

  7. Risk Assessment of Railway Transportation Systems using Timed Fault Trees

    E-Print Network [OSTI]

    Miller, Alice

    Lub, , Alice Millerb , Chris Johnsonb , Tingdi Zhaoa a School of Reliability and Systems Engineering. Introduction System safety relies on robust safety design, good management, and effi- cient maintenance [1, University of Glasgow, Glasgow, United Kingdom Abstract Safety is an essential requirement for railway

  8. Impact of the Variable Refrigerant Volume Air Conditioning System on Building Energy Efficiency 

    E-Print Network [OSTI]

    Zhu, H.

    2006-01-01T23:59:59.000Z

    The application of the variable refrigerant volume multi-zone air conditioning systems has met with mixed results since the publication of the Design Standard for Energy Efficiency of Public Buildings. This paper analyzes the characteristics...

  9. Techniques for Maximizing Efficiency of Solar Energy Harvesting Systems (Invited Paper)

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    Techniques for Maximizing Efficiency of Solar Energy Harvesting Systems (Invited Paper) Pai H requiring battery replacement. This paper ex- amines technical issues with solar energy harvesting. First power point tracking, energy harvest- ing, solar panel, photovoltaic cell, supercapacitor, ultracapac

  10. Efficient error correction for speech systems using constrained re-recognition

    E-Print Network [OSTI]

    Yu, Gregory T

    2008-01-01T23:59:59.000Z

    Efficient error correction of recognition output is a major barrier in the adoption of speech interfaces. This thesis addresses this problem through a novel correction framework and user interface. The system uses constraints ...

  11. High-temperature microfluidic systems for thermally-efficient fuel processing

    E-Print Network [OSTI]

    Arana, Leonel R

    2003-01-01T23:59:59.000Z

    Miniaturized fuel cell systems have the potential to outperform batteries in powering a variety of portable electronics. The key to this technology is the ability to efficiently process an easily-stored, energy-dense fuel. ...

  12. Dynamical systems in nanophotonics: From energy efficient modulators to light forces and optomechanics

    E-Print Network [OSTI]

    Kaertner, Franz X.

    We demonstrate novel device concepts based on rigorous design of the dynamics of resonant nanophotonic systems, such as dispersionless resonant switches and energy-efficient mo-dulator architectures, slow-light cells, and ...

  13. Oxygen and Opacity Stack Emission Monitoring Systems To Optimize Combustion Efficiency and Meet EPA Requirements

    E-Print Network [OSTI]

    Molloy, R. C.

    1980-01-01T23:59:59.000Z

    monitoring systems. REFERENCES 1. KVB, Inc. Report to FEA, Contract No. C-04-50085-00. Assessment of the Potential for Energy Conservation through Improved Industrial Boiler Efficiency, Final Report, Volume I. 2. Everything you Need to Know About...

  14. Efficient Motor System Tools Sponsored by the DOE Motor Challenge Program 

    E-Print Network [OSTI]

    Blazewicz, S.; McCoy, G. A.; Olszewski, M.; Scheihing, P.

    1995-01-01T23:59:59.000Z

    motors and motor-dri ven equipment that wi 11 improve indus! ri al energy effic iency, producti vi ty and environmental performance. The overall goal is to increase the market penetration of energy-efficient industrial electric motor systems...

  15. Harnessing waste heat and reducing wasted lighting : three mechanical structures for efficient energy systems

    E-Print Network [OSTI]

    Stronger, Brad A

    2008-01-01T23:59:59.000Z

    This thesis presents three mechanical structures designed for efficient energy systems. In [3], Cooley presents a modification of a fluorescent lamp which allows it to detect nearby occupants and dim itself automatically. ...

  16. High Efficiency, Ultra-Low Emission, Integrated Process Heater System

    SciTech Connect (OSTI)

    Mason, Howard; Boral, Anindya; Chhotray, San; Martin, Matthew

    2006-06-19T23:59:59.000Z

    The team of TIAX LLC, ExxonMobil Research and Engineering Company, and Callidus Technologies, LLC conducted a six-year program to develop an ultra-low emission process heater burner and an advanced high efficiency heater design. This project addresses the critical need of process heater operators for reliable, economical emission reduction technologies to comply with stringent emission regulations, and for heater design alternatives that reduce process heater energy requirements without significant cost increase. The key project targets were NOx emissions of 10 ppm (@ 3% O2), and a heater thermal efficiency of 95 percent. The ultra low NOx burner was developed through a series of pilot-scale and field tests combined with computational fluid dynamic modeling to arrive at simultaneous low emissions and suitable flame shape and stability. Pilot scale tests were run at TIAX, at the 2 MMBtu/hr scale, and at Callidus at 8 MMBtu/hr. The full scale burner was installed on a 14 burner atmospheric pipestill furnace at an ExxonMobil refinery. A variety of burner configurations, gas tips and flame stabilizers were tested to determine the lowest emissions with acceptable flame shape and stability. The resulting NOx emissions were 22 ppm on average. Starting in 2001, Callidus commercialized the original ultra low NOx burner and made subsequent design improvements in a series of commercial burners evolving from the original concept and/or development. Emissions in the field with the ultra low-NOx burner over a broad spectrum of heater applications have varied from 5 ppm to 30 ppm depending on heater geometry, heater service, fuel and firing capacity. To date, 1550 of the original burners, and 2500 of subsequent generation burners have been sold by Callidus. The advanced heater design was developed by parametric evaluations of a variety of furnace and combustion air preheater configurations and technologies for enhancing convective and radiative heat transfer. The design evolution relied heavily on computational fluid dynamic predictions of design alternatives. The final design features modular separate radiant cells, each with one and two-side fired vertical tubes. The convection section configuration is vertical tube banks enclosed in the radiant channels. Commercial modular plate air preheaters are used. The predicted performance for the integrated advanced heater and Callidus burner is 95 percent efficiency with 9 ppm NOx emissions firing natural gas, and 12 ppm firing refinery gas. The total erected cost is less than a conventional heater with combustion air preheat.

  17. High-efficient solar power systems based on thermionic converter with small gap

    SciTech Connect (OSTI)

    Nikolaev, Y.V.; Eryomin, S.A.; Kalmykov, S.S.; Karpechenko, Y.D.; Kucherov, R.Y.; Lapochkin, N.V. [Research Institute of Scientific Industrial Association ``Lutch``, 142100, Podolsk, Moscow Region (Russian Federation)

    1996-03-01T23:59:59.000Z

    Various configurations of power systems based on thermionic converter with small interelectrode gap have been considered. The results of studies of systems energy characteristics are presented. The high efficiency and perspectivety of such systems for different applications have been shown. {copyright} {ital 1996 American Institute of Physics.}

  18. Soft Tissue Visualization Using a Highly Efficient Megavoltage Cone Beam CT Imaging System

    E-Print Network [OSTI]

    Pouliot, Jean

    Soft Tissue Visualization Using a Highly Efficient Megavoltage Cone Beam CT Imaging System Farhad A developed an imaging system that is optimized for MV and can acquire Megavoltage CBCT images containing soft through the detector. #12;The ability of an x-ray imaging system to differentiate soft tissues is affected

  19. Energy Efficient Design of Portable Wireless Systems Tajana Simunic Haris Vikalo Peter Glynny Giovanni De Micheli

    E-Print Network [OSTI]

    Simunic, Tajana

    -operated portable systems demandtight constraints on energy consumption. Better low-power circuit design techniquesEnergy Efficient Design of Portable Wireless Systems Tajana Simunic Haris Vikalo Peter Glynny control (PC) of the wire- less link that enables us to obtain further energy savings when the system

  20. Systems and methods for selective hydrogen transport and measurement

    DOE Patents [OSTI]

    Glatzmaier, Gregory C

    2013-10-29T23:59:59.000Z

    Systems and methods for selectively removing hydrogen gas from a hydrogen-containing fluid volume are disclosed. An exemplary system includes a proton exchange membrane (PEM) selectively permeable to hydrogen by exclusively conducting hydrogen ions. The system also includes metal deposited as layers onto opposite sides or faces of the PEM to form a membrane-electrode assembly (MEA), each layer functioning as an electrode so that the MEA functions as an electrochemical cell in which the ionic conductors are hydrogen ions, and the MEA functioning as a hydrogen selective membrane (HSM) when located at the boundary between a hydrogen-containing fluid volume and a second fluid.

  1. Direct Digital Control in Air Conditioning Systems for Energy Efficiency

    E-Print Network [OSTI]

    Liu, W.; Ye, A.; Li, D.

    2006-01-01T23:59:59.000Z

    With the rapid development of Intelligent Buildings (IB), the Building Automation System (BAS) has come to control and manage the equipment in the building more and more scientifically, economically and rationally, which can not only raise...

  2. Improving the Water Efficiency of Cooling Production System

    E-Print Network [OSTI]

    Maheshwari, G.; Al-Hadban, Y.; Al-Taqi, H. H.; Alasseri, R.

    2010-01-01T23:59:59.000Z

    For most of the time, cooling towers (CTs) of cooling systems operate under partial load conditions and by regulating the air circulation with a variable frequency drive (VFD), significant reduction in the fan power can be achieved. In Kuwait...

  3. IBM and Energy Efficiency: Systems Recommisiong and Optimization 

    E-Print Network [OSTI]

    Veilleux, Y.; Boulianne, J. P.; Lefebvre, P.

    2013-01-01T23:59:59.000Z

    technologie 5 Environmental Policy Verification Corrective Actions Management Review Execution Planning Environmental Management System Bromont Groupe Syst?mes et technologie 6 IBM Bromont: Energy Efficency Results Energy Conservation...

  4. advanced transportation system: Topics by E-print Network

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

    Henry 134 An Overview on Advance Metering System CiteSeer Summary: Abstract The term "Smart meter " typically refers to an electrical meter, but the term is also starting to be...

  5. Evaluating passenger delays in the US domestic air transportation system

    E-Print Network [OSTI]

    Umang, Nitish

    2010-01-01T23:59:59.000Z

    A fundamental component of any National Airspace System (NAS) performance evaluation is the cost impact of air traffic delays, and more generally capacity limitations, on the traveling passengers. In previous research it ...

  6. Preliminary Analysis Framework for State Sustainable Transportation system

    E-Print Network [OSTI]

    Naganathan, Hariharan

    2013-12-31T23:59:59.000Z

    the research work. 1 Chapter 1- Introduction Sustainability is defined as “A system of policies, beliefs, and best practices that will protect the diversity and richness of the planet’s ecosystems, foster economic vitality...

  7. Chamber transport

    SciTech Connect (OSTI)

    OLSON,CRAIG L.

    2000-05-17T23:59:59.000Z

    Heavy ion beam transport through the containment chamber plays a crucial role in all heavy ion fusion (HIF) scenarios. Here, several parameters are used to characterize the operating space for HIF beams; transport modes are assessed in relation to evolving target/accelerator requirements; results of recent relevant experiments and simulations of HIF transport are summarized; and relevant instabilities are reviewed. All transport options still exist, including (1) vacuum ballistic transport, (2) neutralized ballistic transport, and (3) channel-like transport. Presently, the European HIF program favors vacuum ballistic transport, while the US HIF program favors neutralized ballistic transport with channel-like transport as an alternate approach. Further transport research is needed to clearly guide selection of the most attractive, integrated HIF system.

  8. Lessons Learned from the Alternative Fuels Experience and How They Apply to the Development of a Hydrogen-Fueled Transportation System

    SciTech Connect (OSTI)

    Melendez, M.; Theis, K.; Johnson, C.

    2007-08-01T23:59:59.000Z

    Report describes efforts to deploy alternative transportation fuels and how those experiences might apply to a hydrogen-fueled transportation system.

  9. Design analysis report for the TN-WHC cask and transportation system

    SciTech Connect (OSTI)

    Brisbin, S.A., Fluor Daniel Hanford

    1997-02-13T23:59:59.000Z

    This document presents the evaluation of the Spent Nuclear Fuel Cask and Transportation System. The system design was developed by Transnuclear, Inc. and its team members NAC International, Nelson Manufacturing, Precision Components Corporation, and Numatec, Inc. The cask is designated the TN-WHC cask. This report describes the design features and presents preliminary analyses performed to size critical dimensions of the system while meeting the requirements of the performance specification.

  10. IBM and Energy Efficiency: Systems Recommisiong and Optimization

    E-Print Network [OSTI]

    Veilleux, Y.; Boulianne, J. P.; Lefebvre, P.

    2013-01-01T23:59:59.000Z

    for optimal operation ? HVAC motor fans: Vriable speed drives (VFD) installation on air supply and return fans. Humidification System OptimizationBefore After TEMP-HUM:M2:2-46-545.pv % HR HVAC:M2-RDC-PLA:VLV-HUM.pv % SPECS HUMIDIT? MINIMUM.Value Plot... instruments added to meet control requirements. PID control loop tuning was performed for optimal operation. Measures resulted in reducing the cooling and heating required for the systems as well as the electrical load on the fan motors. Some operational...

  11. Developing Information on Energy Savings and Associated Costs and Benefits of Energy Efficient Emerging Technologies Applicable in California

    E-Print Network [OSTI]

    Xu, Tengfang

    2011-01-01T23:59:59.000Z

    Energy Agency - Energy Technology Systems AnalysisEfficiency Renewable Energy Technologies TransportationU.S. Department of Energy Industrial Technologies Program. (

  12. IMPROVING THE EFFICIENCY OF AN EXISTING GROUNDWATER REMEDIATION SYSTEM

    E-Print Network [OSTI]

    Illinois at Urbana-Champaign, University of

    , Environmental Remediation Aimee Zack ­ Manager, Environmental Remediation #12;CORPORATE SUSTAINABILITY CREATES and sustainability of environmental remedies 2 #12;SITE BACKGROUND The Shoreham Facility 230 acres Northeast Took advantage of available rebates to install solar panels ­ Southern Solar Array: 60 panel system (11

  13. Improving Compressed Air System Efficiency- Know What You Really Need

    E-Print Network [OSTI]

    Terrell, R. E.

    ($17,000/year saved) by reducing air use without reducing production. Another, by monitoring air production and energy requirements of the system, selected a properly sized 75 hp compressor to replace a worn-out 250 hp compressor and paid for the new...

  14. Measured Performance of Energy-Efficient Computer Systems

    E-Print Network [OSTI]

    Floyd, D. B.; Parker, D. S.

    1996-01-01T23:59:59.000Z

    climate. Recent surveys have shown that the use of personal computer systems in commercial office buildings is expanding rapidly. The energy consumption of such a growing end-use also has a significant impact on the total building power demand. In warmer...

  15. Efficient Transaction Support for Dynamic Information Retrieval Systems

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    are on to integrate IR features with database manage­ ment system (DBMS) features. However, initial research has revealed that DBMS features optimized for traditional databases, display degraded performance while are necessary for several DBMS fea­ tures, transaction support being one of them. This paper focuses

  16. Quantum transport calculations using periodic boundaryconditions

    SciTech Connect (OSTI)

    Wang, Lin-Wang

    2004-06-15T23:59:59.000Z

    An efficient new method is presented to calculate the quantum transports using periodic boundary conditions. This method allows the use of conventional ground state ab initio programs without big changes. The computational effort is only a few times of a normal groundstate calculations, thus is makes accurate quantum transport calculations for large systems possible.

  17. Molecular-Flow Properties of RIB Type Vapor-Transport Systems Using a Fast-Valve

    SciTech Connect (OSTI)

    Alton, Gerald D [ORNL] [ORNL; Bilheux, Hassina Z [ORNL] [ORNL; Zhang, Y. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Liu, Yuan [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    The advent of the fast-valve device, described previously, permits measurement of molecular-flow times of chemically active or inactive gaseous species through radioactive ion beam (RIB) target ion source systems, independent of size, geometry and materials of construction. Thus, decay losses of short-half-life RIBs can be determined for a given target/vapor-transport system in advance of on-line operation, thereby ascertaining the feasibility of the system design for successful processing of a given isotope. In this article, molecular-flow-time theory and experimentally measured molecular-flow time data are given for serial- and parallel-coupled Ta metal RIB vapor-transport systems similar to those used at ISOL based RIB facilities. In addition, the effect of source type on the molecular-flow time properties of a given system is addressed, and a chemical passivation method for negating surface adsorption enthalpies for chemically active gaseous species on Ta surfaces is demonstrated.

  18. Engineering Specification Document (ESD) of X-ray Vacuum Transport System (XVTS) for LCLS XTOD

    SciTech Connect (OSTI)

    Shen, S

    2006-01-25T23:59:59.000Z

    The vacuum system of the X-Ray Vacuum Transport System (XVTS) for the Linac Coherent Light Source (LCLS) X-ray Transport, Optics and Diagnostics (XTOD) system has been analyzed and configured by the Lawrence Livermore National Laboratory's New Technologies Engineering Division (NTED) as requested by the SLAC/LCLS program. The preliminary system layout, detailed analyses and suggested selection of the vacuum components for the XTOD tunnel section are presented in the preliminary design report [1]. This document briefly reviews the preliminary design and provides engineering specifications for the system, which can be used as 'design to' specifications for the final design. Also included are the requirements of plans for procurement, mechanical integration, schedule and the cost estimates.

  19. Optimization Problems in Natural Gas Transportation Systems: A ...

    E-Print Network [OSTI]

    2014-09-15T23:59:59.000Z

    Graduate Program in Systems Engineering ... recent advances in solution methodologies arising from this exciting and challenging .... authors basically discuss a mathematical formulation of the underlying problem and provide a lit- ..... who makes use of the method in a computer program for precise flow calculations.

  20. Heat Transport in Groundwater Systems--Laboratory Model 

    E-Print Network [OSTI]

    Reed, D. B.; Reddell, D. L.

    1980-01-01T23:59:59.000Z

    into groundwater aquifers for long term energy storage. Of paramount importance to the success of such a system is the quality and the behavior of the aquifer used for hot water storage. In general, the problem is to obtain an accurate prediction of the response...

  1. Standardized DOE Spent Nuclear Fuel Canister and Transportation System for Shipping to the National Repository

    SciTech Connect (OSTI)

    Pincock, David Lynn; Morton, Dana Keith; Lengyel, Arpad Leslie

    2001-02-01T23:59:59.000Z

    The U.S.Department of Energy’s (DOE) National Spent Nuclear Fuel Program (NSNFP), located at the Idaho National Engineering and Environmental Laboratory (INEEL), has been chartered with the responsibility for developing spent nuclear fuel (SNF) standardized canisters and a transportation cask system for shipping DOE SNF to the national repository. The mandate for this development is outlined in the Memorandum of Agreement for Acceptance of Department of Energy Spent Nuclear Fuel and High-Level Radioactive Waste that states, “EM shall design and fabricate … DOE SNF canisters for shipment to RW.” (1) It also states, “EM shall be responsible for the design, NRC certification, and fabrication of the transportation cask system for DOE SNF canisters or bare DOE SNF in accordance with 10 CFR Part 71.” (2) In fulfillment of these requirements, the NSNFP has developed four SNF standardized canister configurations and has conceptually designed a versatile transportation cask system for shipping the canisters to the national repository.1 The standardized canister sizes were derived from the national repository waste package design for co-disposal of SNF with high-level waste (HLW). One SNF canister can be placed in the center of the waste package or one can be placed in one of five radial positions, replacing a HLW canister. The internal cavity of the transportation cask was derived using the same logic, matching the size of the internal cavity of the waste package. The size of the internal cavity for the transportation cask allows the shipment of multiple canister configurations with the application of a removable basket design. The standardized canisters have been designed to be loaded with DOE SNF, placed into interim storage, shipped to the national repository, and placed in a waste package without having to be reopened. Significant testing has been completed that clearly demonstrates that the standardized canisters can safely achieve their intended design goals. The transportation cask system will include all of the standard design features, with the addition of dual containment for the shipment of failed fuel. The transportation cask system will also meet the rigorous licensing requirements of the Nuclear Regulatory Commission (NRC) to ensure that the design and the methods of fabrication employed will result in a shipping cask that will safely contain the radioactive materials under all credible accident scenarios. The standardization of the SNF canisters and the versatile design of the transportation cask system will eliminate a proliferation of designs and simplify the operations at the user sites and the national repository.

  2. Commercial high efficiency dehumidification systems using heat pipes

    SciTech Connect (OSTI)

    Not Available

    1993-09-01T23:59:59.000Z

    An improved heat pipe design using separately connected two-section one-way flow heat pipes with internal microgrooves instead of wicks is described. This design is now commercially available for use to increase the dehumidification capacity of air conditioning systems. The design also includes a method of introducing fresh air into buildings while recovering heat and controlling the humidity of the incoming air. Included are applications and case studies, load calculations and technical data, and installation, operation, and maintenance information.

  3. Phase II Final Project Report SBIR Project: "A High Efficiency PV to Hydrogen Energy System"

    SciTech Connect (OSTI)

    Slade, A; Turner, J; Stone, K; McConnell, R

    2008-09-02T23:59:59.000Z

    The innovative research conducted for this project contributed greatly to the understanding of generating low-cost hydrogen from solar energy. The project’s research identified two highly leveraging and complementary pathways. The first pathway is to dramatically increase the efficiency of converting sunlight into electricity. Improving solar electric conversion efficiency directly increases hydrogen production. This project produced a world record efficiency for silicon solar cells and contributed to another world record efficiency for a solar concentrator module using multijunction solar cells. The project’s literature review identified a second pathway in which wasted heat from the solar concentration process augments the electrolysis process generating hydrogen. One way to do this is to use a “heat mirror” that reflects the heat-producing infrared and transmits the visible spectrum to the solar cells; this also increases solar cell conversion efficiency. An economic analysis of this concept confirms that, if long-term concentrator photovoltaic (CPV) and solid-oxide electrolyzer cost goals can be achieved, hydrogen will be produced from solar energy cheaper than the cost of gasoline. The potential public benefits from this project are significant. The project has identified a potential energy source for the nation’s future electricity and transportation needs that is entirely “home grown” and carbon free. As CPV enter the nation’s utility markets, the opportunity for this approach to be successful is greatly increased. Amonix strongly recommends further exploration of this project’s findings.

  4. Environment Assisted Quantum Transport in Organic Molecules

    E-Print Network [OSTI]

    Vattay, Gabor

    2015-01-01T23:59:59.000Z

    One of the new discoveries in quantum biology is the role of Environment Assisted Quantum Transport (ENAQT) in excitonic transport processes. In disordered quantum systems transport is most efficient when the environment just destroys quantum interferences responsible for localization, but the coupling does not drive the system to fully classical thermal diffusion yet. This poised realm between the pure quantum and the semi-classical domains has not been considered in other biological transport processes, such as charge transport through organic molecules. Binding in receptor-ligand complexes is assumed to be static as electrons are assumed to be not able to cross the ligand molecule. We show that ENAQT makes cross ligand transport possible and efficient between certain atoms opening the way for the reorganization of the charge distribution on the receptor when the ligand molecule docks. This new effect can potentially change our understanding how receptors work. We demonstrate room temperature ENAQT on the c...

  5. Transportation Routing Analysis Georgraphic Information System (WebTRAGIS) User's Manual

    SciTech Connect (OSTI)

    Michelhaugh, R.D.

    2000-04-20T23:59:59.000Z

    In the early 1980s, Oak Ridge National Laboratory (ORNL) developed two transportation routing models: HIGHWAY, which predicts truck transportation routes, and INTERLINE, which predicts rail transportation routes. Both of these models have been used by the U.S. Department of Energy (DOE) community for a variety of routing needs over the years. One of the primary uses of the models has been to determine population-density information, which is used as input for risk assessment with the RADTRAN model, which is available on the TRANSNET computer system. During the recent years, advances in the development of geographic information systems (GISs) have resulted in increased demands from the user community for a GIS version of the ORNL routing models. In April 1994, the DOE Transportation Management Division (EM-261) held a Baseline Requirements Assessment Session with transportation routing experts and users of the HIGHWAY and INTERLINE models. As a result of the session, the development of a new GIS routing model, Transportation Routing Analysis GIS (TRAGIS), was initiated. TRAGIS is a user-friendly, GIS-based transportation and analysis computer model. The older HIGHWAY and INTERLINE models are useful to calculate routes, but they cannot display a graphic of the calculated route. Consequently, many users have experienced difficulty determining the proper node for facilities and have been confused by or have misinterpreted the text-based listing from the older routing models. Some of the primary reasons for the development of TRAGIS are (a) to improve the ease of selecting locations for routing, (b) to graphically display the calculated route, and (c) to provide for additional geographic analysis of the route.

  6. NGATS ATM-Airportal Project Reference Material (External Release) Next Generation Air Transportation System

    E-Print Network [OSTI]

    NGATS ATM-Airportal Project Reference Material (External Release) Next Generation Air Transportation System (NGATS) Air Traffic Management (ATM) - Airportal Project Reference Material May 23, 2007 Manager NASA Mike Madson Project Scientist NASA #12;NGATS ATM-Airportal Project Reference Material

  7. Meeting U.S. Liquid Transport Fuel Needs with a Nuclear Hydrogen Biomass System

    SciTech Connect (OSTI)

    Forsberg, Charles W [ORNL

    2007-01-01T23:59:59.000Z

    The two major energy challenges for the United States are replacing crude oil in our transportation system and eliminating greenhouse gas emissions. A domestic-source greenhouse-gas-neutral nuclear hydrogen biomass system to replace oil in the transportation sector is described. Some parts of the transportation system can be electrified with electricity supplied by nuclear energy sources that do not emit significant quantities of greenhouse gases. Other components of the transportation system require liquid fuels. Biomass can be converted to greenhouse-gas-neutral liquid fuels; however, the conversion of biomass-to-liquid fuels is energy intensive. There is insufficient biomass to meet U.S. liquid fuel demands and provide the energy required to process the biomass-to-liquid fuels. With the use of nuclear energy to provide heat, electricity, and hydrogen for the processing of biomass-to-liquid fuels, the liquid fuel production per unit of biomass is dramatically increased, and the available biomass could meet U.S. liquid fuel requirements.

  8. Vision-based Control of a Smart Wheelchair for the Automated Transport and Retrieval System (ATRS)

    E-Print Network [OSTI]

    Spletzer, John R.

    for autonomously docking a wheelchair onto a vehicle lift platform. This is a principle component of the AutomatedVision-based Control of a Smart Wheelchair for the Automated Transport and Retrieval System (ATRS disabilities. The ATRS employs robotics, automation, and machine vision technologies, and can be integrated

  9. Safety Verification of the Small Aircraft Transportation System Concept of Operations

    E-Print Network [OSTI]

    Muñoz, César A.

    performed for the Small Aircraft Transportation System (SATS) Concept of Operations (ConOps). The concept of operation complies with a set of safety requirements. It is also shown that the ConOps has some desirable of Operations for Higher Volume Operation (SATS-HVO ConOps) has been developed by a team at NASA Langley

  10. Potential Impacts of Mexico's Energy Reform on Texas' Transportation System 1 Testimony of Jolanda Prozzi

    E-Print Network [OSTI]

    of oil, condensate, and natural gas.i Exploration of Mexico's shale reserves that are located south the monopoly of the oil company Petróleos Mexicanos (Pemex) and encourage foreign investment in Mexico's energyPotential Impacts of Mexico's Energy Reform on Texas' Transportation System 1 Testimony of Jolanda

  11. Mexico's Energy Reform and the Potential Impact on Texas' Transportation System

    E-Print Network [OSTI]

    and extraction since 1997 · Increased imports of refined products and crude oil ­Mexico to become a net oil of industrial safety and environmental protection Footer Text Mexico's Energy Reform #12;· Reserves availableMexico's Energy Reform and the Potential Impact on Texas' Transportation System Jolanda Prozzi

  12. A Novel MagPipe Pipeline transportation system using linear motor drives

    SciTech Connect (OSTI)

    Fang, J.R.; Montgomery, D.B.; Roderick, L. [Magplane Technology Inc., Littleton, MA (United States)

    2009-11-15T23:59:59.000Z

    A novel capsule pipeline transportation system using linear motor drives, called Magplane MagPipe, is under development with the intention to replace trucks and railways for hauling materials from the mine to the rail head, power plant, or processing plant with reduced operating cost and energy consumption. The initial demonstration of a MagPipe line in Inner Mongolia will be a 500-m-long double-pipe coal transport system with the design transportation capacity of 3 Mega-Mg per year. The pipeline consists of 6-m-long plastic pipe modules with an I-beam suspension system inside the pipe to carry sets of five coupled capsules. The pipe will also contain noncontinuous motor winding modules spaced at 50-m intervals. A set of Halbach-arrayed permanent magnets on the bottom of the capsules interact with the linear motor windings to provide propulsion. The motor is driven by variable frequency drives outside the pipe to control the speed. This paper briefly describes the overall MagPipe pipeline transportation system, including the preliminary conclusions of the linear synchronous motor analysis.

  13. Project ID: 35011 Title: The Floating Net Pen Transportation System Pilot Project

    E-Print Network [OSTI]

    Project ID: 35011 Title: The Floating Net Pen Transportation System Pilot Project Sponsor: Columbia sufficient. The proposal does not specify what benefits might be expected from use of net pens relative raceways or other sources to the net pens is discussed in the proposal. The reviewers are aware

  14. Energy Efficient Steam Trapping of Trace Heating Systems

    E-Print Network [OSTI]

    Krueger, R. G.; Wilt, G. W.

    1981-01-01T23:59:59.000Z

    to insure low back pressure. Caution: Make certain the trap you select can handle the system back pressure. Each trap has specific limitations in this regard. 8. A Y-Strainer is considered mandatory for use on any Tracer Trap to reduce the potential... for plugging based on the small orifice sizes being employed. (Refer to Fig. 3). 9. Freeze-proofing each trap should be in accord with each manufacturer's recommendations. 10. When multiple traps are installed to discharge into a common manifold, check...

  15. Developing Energy Efficient Roof Systems DEERS | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergy OffshoreDeveloper - Q & A Home >Roof Systems

  16. ALTERNATE HIGH EFFICIENCY PARTICULATE AIR (HEPA) FILTRATION SYSTEM

    SciTech Connect (OSTI)

    Bruce Bishop; Robert Goldsmith; Karsten Nielsen; Phillip Paquette

    2002-08-16T23:59:59.000Z

    In Phase IIA of this project, CeraMem has further developed and scaled up ceramic HEPA filters that are appropriate for use on filtration of vent gas from HLW tanks at DOE sites around the country. This work included procuring recrystallized SiC monoliths, developing membrane and cement materials, and defining a manufacturing process for the production of prototype full sizes HEPA filters. CeraMem has demonstrated that prototype full size filters can be manufactured by producing 9 full size filters that passed DOP aerosol testing at the Oak Ridge Filter Test Facility. One of these filters was supplied to the Savannah River Technical Center (SRTC) for process tests using simulated HLW tank waste. SRTC has reported that the filter was regenerable (with some increase in pressure drop) and that the filter retained its HEPA retention capability. CeraMem has also developed a Regenerable HEPA Filter System (RHFS) design and acceptance test plan that was reviewed by DOE personnel. The design and acceptance test plan form the basis of the system proposal for follow-on work in Phase IIB of this project.

  17. Feedback-controlled transport in an interacting colloidal system

    E-Print Network [OSTI]

    Ken Lichtner; Sabine H. L. Klapp

    2010-11-03T23:59:59.000Z

    Based on dynamical density functional theory (DDFT) we consider a non-equilibrium system of interacting colloidal particles driven by a constant tilting force through a periodic, symmetric "washboard" potential. We demonstrate that, despite of pronounced spatio-temporal correlations, the particle current can be reversed by adding suitable feedback control terms to the DDFT equation of motion. We explore two distinct control protocols with time delay, focussing on either the particle positions or the density profile. Our study shows that the DDFT is an appropriate framework to implement time-delayed feedback control strategies widely used in other fields of nonlinear physics

  18. Automated Transportation Logistics and Analysis System (ATLAS) | Department

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy:WhetherNovember 13, 2009 Management(UpdatedInsulated Cladding Systems

  19. Investing in Sustainable Transport and Urban Systems: The GEF Experience |

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtelInterias Solar Energy Jump to:IESInterval Data SystemsInves PozoOpen

  20. Development of a Transportable, 1065-Compliant Emissions Measurement System

    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 DataDepartment of Energy Your Density Isn't Your Destiny:Revised Finding of No53197E T A * S HBatteries withAbstractSystemHydrocarbon|

  1. Systems Approach to New Transportation Fuels | 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 DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic SafetyGeothermal/Ground-Sourcepnnl.gov CodesSystem for|

  2. A new challenge for the energy efficiency evaluation community: energy savings and emissions reductions from urban transportation policies

    E-Print Network [OSTI]

    Boyer, Edmond

    programs for industries, residential and commercial sectors. But now the largest share of the energyA new challenge for the energy efficiency evaluation community: energy savings and emissions de Nantes, France Abstract The energy efficiency evaluation community has a large experience about

  3. Hybrid Plasma Reactor/Filter for Transportable Collective Protection Systems

    SciTech Connect (OSTI)

    Josephson, Gary B.; Tonkyn, Russell G.; Frye, J. G.; Riley, Brian J.; Rappe, Kenneth G.

    2011-04-06T23:59:59.000Z

    Pacific Northwest National Laboratory (PNNL) has performed an assessment of a Hybrid Plasma/Filter system as an alternative to conventional methods for collective protection. The key premise of the hybrid system is to couple a nonthermal plasma (NTP) reactor with reactive adsorption to provide a broader envelope of protection than can be provided through a single-solution approach. The first step uses highly reactive species (e.g. oxygen radicals, hydroxyl radicals, etc.) created in a nonthermal plasma (NTP) reactor to destroy the majority (~75% - 90%) of an incoming threat. Following the NTP reactor an O3 reactor/filter uses the O3 created in the NTP reactor to further destroy the remaining organic materials. This report summarizes the laboratory development of the Hybrid Plasma Reactor/Filter to protect against a ‘worst-case’ simulant, methyl bromide (CH3Br), and presents a preliminary engineering assessment of the technology to Joint Expeditionary Collective Protection performance specifications for chemical vapor air purification technologies.

  4. How to count efficiently all affine roots of a polynomial system \\Lambda

    E-Print Network [OSTI]

    Verschelde, Jan

    on the lifting of the artificial origins exist and can be derived dynamically, as described in sections 4, 5How to count efficiently all affine roots of a polynomial system \\Lambda Ioannis Z. Emiris y Jan system; how­ ever, it has so far mostly dealt with roots having nonzero coordinates. We shift attention

  5. Studying the energy efficiency of large-scale computer systems requires models of the relationship

    E-Print Network [OSTI]

    Rivoire, Suzanne

    Abstract Studying the energy efficiency of large-scale computer systems requires models-node clusters using embedded, laptop, desktop, and server processors. These results demonstrate the need usage and power consumption. Therefore, a substantial body of literature models system-level power

  6. Survey of energy-efficient and power-proportional storage systems

    E-Print Network [OSTI]

    Isaila, Florin

    Survey of energy-efficient and power-proportional storage systems Pablo Llopis, Javier Garcia Blas and challenges. Keywords: energy; storage; power-aware; power proportionality; data center; Green IT Received 20]. In fact, disks alone can contribute a significant fraction of energy, about 86% for storage systems [10

  7. ORNL Roof and Attic System Shows Efficient Retrofit By Zaher Karp Reuters, July 27, 2009

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ORNL Roof and Attic System Shows Efficient Retrofit Option By Zaher Karp ­ Reuters, July 27, 2009 A new roof and attic system developed at the Oak Ridge National Laboratory Building Technology Center. Texas-based Billy Ellis Roofing funds the research through the Building Technology Center

  8. OBSERVE: Occupancy-Based System for Efficient Reduction of HVAC Energy

    E-Print Network [OSTI]

    Carreira-Perpiñán, Miguel Á.

    OBSERVE: Occupancy-Based System for Efficient Reduction of HVAC Energy Varick L. Erickson, Miguel Á & control General Terms Algorithms, Machine Learning, Measurement Keywords Occupancy, HVAC, Ventilation for heating, ventilation, and air-conditioning (HVAC) systems[2]. Studies suggest that 15% to 25% of HVAC

  9. An Efficient Intrusion Detection System Design Thomas Holz, Michael Meier, Hartmut Koenig

    E-Print Network [OSTI]

    Meier, Michael

    mechanisms (e.g. authentication, encryption, or access control) they provide an automatic detection1 An Efficient Intrusion Detection System Design Thomas Holz, Michael Meier, Hartmut Koenig Mail:{thh,mm,koenig}@informatik.tu-cottbus.de Abstract: Intrusion detection systems have proved

  10. Metropolitan Transportation Plan 2005-2030

    E-Print Network [OSTI]

    Santa Fe Metropolitan Planning Organization

    1999-01-01T23:59:59.000Z

    The Santa Fe Metropolitan Transportation Plan 2005-2030 (MTP) replaces the Santa Fe MPO Long Range Transportation Plan 2000-2020 as a guide for developing a safer, more efficient and effective transportation system that serves the residents..., commuters and visitors to Santa Fe. The theme of ?providing interconnected options for more travel choices? reflects a strong public call for a safer and more functional interconnected network of roads, trails and transit routes that gives people a choice...

  11. Efficiency of energy transfer in a light-harvesting system under quantum coherence

    E-Print Network [OSTI]

    Alexandra Olaya-Castro; Chiu Fan Lee; Francesca Fassioli Olsen; Neil F. Johnson

    2008-04-16T23:59:59.000Z

    We investigate the role of quantum coherence in the efficiency of excitation transfer in a ring-hub arrangement of interacting two-level systems, mimicking a light-harvesting antenna connected to a reaction center as it is found in natural photosynthetic systems. By using a quantum jump approach, we demonstrate that in the presence of quantum coherent energy transfer and energetic disorder, the efficiency of excitation transfer from the antenna to the reaction center depends intimately on the quantum superposition properties of the initial state. In particular, we find that efficiency is sensitive to symmetric and asymmetric superposition of states in the basis of localized excitations, indicating that initial state properties can be used as a efficiency control parameter at low temperatures.

  12. Benchmarking transportation logistics practices for effective system planning

    SciTech Connect (OSTI)

    Thrower, A.W. [Office of Civilian Radioactive Waste Management, U.S. Dept. of Energy, Washington, DC (United States); Dravo, A.N. [Booz Allen Hamilton, Washington, DC (United States); Keister, M. [Idaho National Laboratory, ID (United States)

    2007-07-01T23:59:59.000Z

    This paper presents preliminary findings of an Office of Civilian Radioactive Waste Management (OCRWM) benchmarking project to identify best practices for logistics enterprises. The results will help OCRWM's Office of Logistics Management (OLM) design and implement a system to move spent nuclear fuel (SNF) and high-level radioactive waste (HLW) to the Yucca Mountain repository for disposal when that facility is licensed and built. This report suggests topics for additional study. The project team looked at three Federal radioactive material logistics operations that are widely viewed to be successful: (1) the Waste Isolation Pilot Plant (WIPP) in Carlsbad, New Mexico; (2) the Naval Nuclear Propulsion Program (NNPP); and (3) domestic and foreign research reactor (FRR) SNF acceptance programs. (authors)

  13. Ion transport membrane module and vessel system with directed internal gas flow

    DOE Patents [OSTI]

    Holmes, Michael Jerome (Thompson, ND); Ohrn, Theodore R. (Alliance, OH); Chen, Christopher Ming-Poh (Allentown, PA)

    2010-02-09T23:59:59.000Z

    An ion transport membrane system comprising (a) a pressure vessel having an interior, an inlet adapted to introduce gas into the interior of the vessel, an outlet adapted to withdraw gas from the interior of the vessel, and an axis; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region; and (c) one or more gas flow control partitions disposed in the interior of the pressure vessel and adapted to change a direction of gas flow within the vessel.

  14. Pajarito Plateau Groundwater Flow and Transport Modeling Process-Level and Systems Models of Groundwater Flow and

    E-Print Network [OSTI]

    Lu, Zhiming

    Pajarito Plateau Groundwater Flow and Transport Modeling 1 Process-Level and Systems Models of Groundwater Flow and Transport Beneath the Pajarito Plateau: Migration of High Explosives from Technical Area Groundwater Modeling Project Systems Model Vadose Zone Model Regional Aquifer Model #12;Pajarito Plateau

  15. Title: Designing Energy-Efficient Information Processing Systems Abstract: The semiconductor industry is facing some extraordinary challenges, including process and

    E-Print Network [OSTI]

    Title: Designing Energy-Efficient Information Processing Systems Abstract: The semiconductor. It is against this backdrop that I provide examples of some techniques used to improve the energy efficiency's research focuses on energy-efficient computing, energy storage systems, low power electronics and design

  16. A compendium of the radioisotope thermoelectric generator transportation system and recent programmatic changes

    SciTech Connect (OSTI)

    Becker, D.L.; McCoy, J.C.

    1996-03-01T23:59:59.000Z

    Because RTGs contain significant quantities of radioactive materials, usually plutonium-238 and its decay products, they must be transported in packages built in accordance with 10 CFR 71 (1994). To meet these regulatory requirements, US DOE commissioned Westinghouse Hanford Co. in 1988 to develop a Radioisotope Thermoelectric Generator Transportation System (RTGTS) that would fully comply while protecting RTGs from adverse environmental conditions during normal transport conditions (eg, mainly shock and heat). RTGTS is scheduled for completion Dec. 1996 and will be available to support NASA`s Cassini mission to Saturn in Oct. 1997. This paper provides an overview of the RTGTS project, discusses the hardware being produced, and summarizes various programmatic and management innovations required by recent changes at DOE.

  17. Gain margin and phase margin analysis of a nuclear reactor control system with multiple transport lags

    SciTech Connect (OSTI)

    Chang, C.H. (Institute of Electronics, National Chiao-Tung Univ. (TW)); Han, K.W. (Chung-Shan Institute and National Chiao-Tung Univ., Hsinchu (TW))

    1989-08-01T23:59:59.000Z

    In this paper a method for finding the boundaries of constant gain margin and phase margin of control systems with transport lags and adjustable parameters is presented. The considered systems are first modified by adding a gain-phase margin tester, then the characteristic equations are formulated, and finally the stability equations are used to find the boundaries of constant gain margin and phase margin. The main advantage of the proposed method is to obtain complete information about the effects of adjustable parameters on gain margin and phase margin and their corresponding crossover frequencies. In order to show the usefulness of the proposed method a nuclear reactor control system with multiple transport lags is chosen as one of the examples.

  18. Nanocoatings for High-Efficiency Industrial and Tooling Systems

    SciTech Connect (OSTI)

    Blau, P; Qu, J.; Higdon, C. (Eaton Corporation)

    2011-02-01T23:59:59.000Z

    This industry-driven project was the result of a successful response by Eaton Corporation to a DOE/ITP Program industry call. It consisted of three phases in which ORNL participated. In addition to Eaton Corporation and ORNL (CRADA), the project team included Ames Laboratory, who developed the underlying concept for aluminum-magnesium-boron based nanocomposite coatings [1], and Greenleaf, a small tooling manufacturer in western Pennsylvania. This report focuses on the portion of this work that was conducted by ORNL in a CRADA with Eaton Corporation. A comprehensive final report for the entire effort, which ended in September 2010, has been prepared by Eaton Corporation. Phase I, “Proof of Concept” ran for one year (September 1, 2006 to September 30, 2007) during which the applicability of AlMgB14 single-phase and nanocomposite coatings on hydraulic material coupons and components as well as on tool inserts was demonstrated.. The coating processes used either plasma laser deposition (PLD) or physical vapor deposition (PVD). During Phase I, ORNL conducted laboratory-scale pin-on-disk and reciprocating pin-on-flat tests of coatings produced by PLD and PVD. Non-coated M2 tool steel was used as a baseline for comparison, and the material for the sliding counterface was Type 52100 bearing steel since it simulated the pump materials. Initial tests were run mainly in a commercial hydraulic fluid named Mobil DTE-24, but some tests were later run in a water-glycol mixture as well. A tribosystem analysis was conducted to define the operating conditions of pump components and to help develop simulative tests in Phase II. Phase II, “Coating Process Scale-up” was intended to use scaled-up process to generate prototype parts. This involved both PLD practices at Ames Lab, and a PVD scale-up study at Eaton using its production capable equipment. There was also a limited scale-up study at Greenleaf for the tooling application. ORNL continued to conduct friction and wear tests on process variants and developed tests to better simulate the applications of interest. ORNL also employed existing lubrication models to better understand hydraulic pump frictional behavior and test results. Phase III, “Functional Testing” focused on finalizing the strategy for commercialization of AlMgB14 coatings for both hydraulic and tooling systems. ORNL continued to provide tribology testing and analysis support for hydraulic pump applications. It included both laboratory-scale coupon testing and the analysis of friction and wear data from full component-level tests performed at Eaton Corp. Laboratory-scale tribology test methods are used to characterize the behavior of nanocomposite coatings prior to running them in full-sized hydraulic pumps. This task also includes developing tribosystems analyses, both to provide a better understanding of the performance of coated surfaces in alternate hydraulic fluids, and to help design useful laboratory protocols. Analysis also includes modeling the lubrication conditions and identifying the physical processes by which wear and friction of the contact interface changes over time. This final report summarizes ORNL’s portion of the nanocomposite coatings development effort and presents both generated data and the analyses that were used in the course of this effort.

  19. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01T23:59:59.000Z

    dual compressor available on the market Compared with the selected building, a more energy efficient building will have lower space cooling and heating

  20. An efficient algorithm for real-time network reconfiguration in large scale unbalanced distribution systems

    SciTech Connect (OSTI)

    Wang, J.C.; Chiang, H.D. [Cornell Univ., Ithaca, NY (United States). School of Electrical Engineering; Darling, G.R. [NYSEG Corp., Binghamton, NY (United States). Distribution System Dept.

    1996-02-01T23:59:59.000Z

    Real-time applications demand fast computation, this paper proposes an efficient algorithm for real-time network reconfiguration on large unbalanced distribution networks. A novel formulation of the network reconfiguration to achieve loss minimization and load balancing is given. To reduce computational requirements for the solution algorithm, well justified power flow and loss reduction formulas in terms of the on/off status of network switches are proposed for efficient system updating. The algorithm relies only on a few full power flow studies based on system states attained by explicit expressions using backward-forward sweeps for efficient computation of system`s states at the critical system operating points. The solution algorithm runs in an amount of time linearly proportional to the number of tie switches and the number of sectionalizing switches in the system. The solution algorithm has been implemented into a software package and tested on unbalanced distribution systems including a system with 292-buses, 76-laterals, 7 transformers, 45 switches and 255 lines sections under diverse system conditions.