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Note: This page contains sample records for the topic "transportation system efficiency" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Alternative Fuels Data Center: Transportation System Efficiency  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Transportation System Transportation System Efficiency to someone by E-mail Share Alternative Fuels Data Center: Transportation System Efficiency on Facebook Tweet about Alternative Fuels Data Center: Transportation System Efficiency on Twitter Bookmark Alternative Fuels Data Center: Transportation System Efficiency on Google Bookmark Alternative Fuels Data Center: Transportation System Efficiency on Delicious Rank Alternative Fuels Data Center: Transportation System Efficiency on Digg Find More places to share Alternative Fuels Data Center: Transportation System Efficiency on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Fleet Rightsizing System Efficiency Ridesharing Mass Transit Active Transit Multi-Modal Transportation Telework

2

Efficiency and Evolution of Water Transport Systems in Higher Plants: A Modelling Approach. II. Stelar Evolution  

Science Journals Connector (OSTI)

...July 1994 research-article Efficiency and Evolution of Water Transport Systems in Higher...protostele and siphonostele in water conduction was analysed numerically...identical with regard to water transport efficiency. The Royal Society is collaborating...

1994-01-01T23:59:59.000Z

3

Efficiency and Evolution of Water Transport Systems in Higher Plants: A Modelling Approach. I. The Earliest Land Plants  

Science Journals Connector (OSTI)

...1994 research-article Efficiency and Evolution of Water Transport Systems in Higher...transport vascular taxa water water pressure GeoRef, Copyright...1098/rstb.1994.0093 Efficiency and evolution of water transport systems in higher...

1994-01-01T23:59:59.000Z

4

Transportation Efficiency Resources  

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

Transportation efficiency reduces travel demand as measured by vehicle miles traveled (VMT). While transportation efficiency policies are often implemented under local governments, national and...

5

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

SciTech Connect

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.

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

2013-11-12T23:59:59.000Z

6

Intelligent Transportation Systems - Center for Transportation Analysis  

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

Intelligent Transportation Systems Intelligent Transportation Systems The Center for Transportation Analysis does specialty research and development in intelligent transportation systems. Intelligent Transportation Systems (ITS) are part of the national strategy for improving the operational safety, efficiency, and security of our nation's highways. Since the early 1990s, ITS has been the umbrella under which significant efforts have been conducted in research, development, testing, deployment and integration of advanced technologies to improve the measures of effectiveness of our national highway network. These measures include level of congestion, the number of accidents and fatalities, delay, throughput, access to transportation, and fuel efficiency. A transportation future that includes ITS will involve a significant improvement in these

7

Supertruck - Improving Transportation Efficiency through Integrated...  

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

Improving Transportation Efficiency through Integrated Vehicle, Engine and Powertrain Research Supertruck - Improving Transportation Efficiency through Integrated Vehicle, Engine...

8

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

E-Print Network (OSTI)

agenciestoprovideleadershiponresearch,ed- ucation and technology transfer to address is- sues related to transportation system produc- cation, and technology transfer pertain- ing to all forms of transportation. Work- ing through the GTI and its its international goods movement infrastructure.With substantial increases in demand

Storici, Francesca

9

Transportation Efficiency Strategies  

Gasoline and Diesel Fuel Update (EIA)

fuel efficiency through conventional engine hybrid and other technologies Reducing air pollution with conventional engine technology Hybrid and internal...

10

Measuring Transport Protocol Potential for Energy Efficiency  

E-Print Network (OSTI)

Measuring Transport Protocol Potential for Energy Efficiency S. Kontogiannis, L. Mamatas, I. Psaras, Greece {skontog, emamatas, ipsaras, vtsaousi}@ee.duth.gr Abstract. We investigate the energy-saving potential of transport pro- tocols. We focus on the system-related aspect of energy. Do we have to damage

Tsaoussidis, Vassilis

11

Transforming California's Freight Transport System  

E-Print Network (OSTI)

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

California at Davis, University of

12

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

E-Print Network (OSTI)

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 ...

Yutko, Brian M. (Brian Matthew)

2014-01-01T23:59:59.000Z

13

Transportation Efficiency Financial Incentives and Program Resources  

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

While transportation efficiency policies are often implemented under local governments, national and state programs can play supportive roles in reducing vehile miles traveled. Find financial...

14

Graduate Studies Transportation Systems Engineering  

E-Print Network (OSTI)

Graduate Studies Transportation Systems Engineering TRANSPORTATION SYSTEMS The transportation that transportation systems engineering can promote a thriving economy and a better quality of life by ensuring that transportation systems themselves affect the environment through operations, construction, and maintenance

Jacobs, Laurence J.

15

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

E-Print Network (OSTI)

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

Roaza, Ruth

2007-01-01T23:59:59.000Z

16

Using Transportation Technology to Increase Efficiencies in Shipping: Real  

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

Using Transportation Technology to Increase Efficiencies in Using Transportation Technology to Increase Efficiencies in Shipping: Real Life Experience in Oak Ridge Using Transportation Technology to Increase Efficiencies in Shipping: Real Life Experience in Oak Ridge RFITS has enabled DOE ORO to establish a complex-wide initiative, supporting on-site electronic shipping and transportation of waste while utilizing industry best practices to develop and maintain a cost effective and sustainable logistics and inventory management system. Using Transportation Technology to Increase Efficiencies in Shipping: Real Life Experience in Oak Ridge More Documents & Publications Above on the left is K-25, at Oak Ridge before and after the 844,000 sq-ft demolition. In addition, on the right: K Cooling Tower at Savannah River Site demolition.

17

Using Transportation Technology to Increase Efficiencies in Shipping: Real  

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

Using Transportation Technology to Increase Efficiencies in Using Transportation Technology to Increase Efficiencies in Shipping: Real Life Experience in Oak Ridge Using Transportation Technology to Increase Efficiencies in Shipping: Real Life Experience in Oak Ridge RFITS has enabled DOE ORO to establish a complex-wide initiative, supporting on-site electronic shipping and transportation of waste while utilizing industry best practices to develop and maintain a cost effective and sustainable logistics and inventory management system. Using Transportation Technology to Increase Efficiencies in Shipping: Real Life Experience in Oak Ridge More Documents & Publications Above on the left is K-25, at Oak Ridge before and after the 844,000 sq-ft demolition. In addition, on the right: K Cooling Tower at Savannah River Site demolition.

18

Transportation System Requirements Document  

SciTech Connect

This Transportation System Requirements Document (Trans-SRD) describes the functions to be performed by and the technical requirements for the Transportation System to transport spent nuclear fuel (SNF) and high-level radioactive waste (HLW) from Purchaser and Producer sites to a Civilian Radioactive Waste Management System (CRWMS) site, and between CRWMS sites. The purpose of this document is to define the system-level requirements for Transportation consistent with the CRWMS Requirement Document (CRD). These requirements include design and operations requirements to the extent they impact on the development of the physical segments of Transportation. The document also presents an overall description of Transportation, its functions, its segments, and the requirements allocated to the segments and the system-level interfaces with Transportation. The interface identification and description are published in the CRWMS Interface Specification.

Not Available

1993-09-01T23:59:59.000Z

19

GIZ Sourcebook Module 5h: Urban Transport and Energy Efficiency...  

Open Energy Info (EERE)

h: Urban Transport and Energy Efficiency Jump to: navigation, search Tool Summary LAUNCH TOOL Name: GIZ Sourcebook Module 5h: Urban Transport and Energy Efficiency AgencyCompany...

20

Sustainable Transport Systems STS | Open Energy Information  

Open Energy Info (EERE)

Transport Systems STS Transport Systems STS Jump to: navigation, search Name Sustainable Transport Systems (STS) Place Santa Cruz, California Zip 95062 Sector Carbon, Efficiency Product California-based company providing assistance to firms looking to cut their carbon footprint through advice about how they can improve efficiency. References Sustainable Transport Systems (STS)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Sustainable Transport Systems (STS) is a company located in Santa Cruz, California . References ↑ "Sustainable Transport Systems (STS)" Retrieved from "http://en.openei.org/w/index.php?title=Sustainable_Transport_Systems_STS&oldid=351924"

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


21

Natural Gas Compression Technology Improves Transport and Efficiencies,  

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

Natural Gas Compression Technology Improves Transport and Natural Gas Compression Technology Improves Transport and Efficiencies, Lowers Operating Costs Natural Gas Compression Technology Improves Transport and Efficiencies, Lowers Operating Costs May 10, 2012 - 1:00pm Addthis Washington, DC - 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 (DOE). OsComp Systems designed and tested the novel compressor design with funding from the DOE-supported Stripper Well Consortium, an industry-driven organization whose members include natural gas and petroleum producers,

22

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

23

The Energy Efficiency Potential of Global Transport to 2050 ...  

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

to 2050 The Energy Efficiency Potential of Global Transport to 2050 Broad view of sustainability of global transportation deer11greene.pdf More Documents & Publications...

24

Transportation Systems Engineering GRADUATE STUDIES  

E-Print Network (OSTI)

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

Wang, Yuhang

25

Integrated transportation system design optimization  

E-Print Network (OSTI)

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, ...

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

2007-01-01T23:59:59.000Z

26

Tree transport system  

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

Tree transport system Tree transport system Name: Paul K Harding Location: N/A Country: N/A Date: N/A Question: How can trees get that tall? How can the transport of water function that good? Normally one could think that trees can get only 10 m high because then the pressure of the air would be to weak to transport the water and a vacuum would occur. Or do trees use a system of one pump-system after another to solve that problem? Replies: Okay, the answer is two-fold. One, the column of water travelling up the trunk of the tree is only a couple of molecules wide, moving up from cell to cell. You can think of each cell as a "valve" if you will, holding the water and keeping it from flowing down the trunk (unless you WANT it to go that way, in the case of sugar laden water moving to storage areas in the roots) until it can be moved to the next cell up, and so on and so on. The second part involves diffusion. Cells can diffuse certain chemical compounds through their cell walls while simultaneously holding onto others. By having a gradient of increasing chemical concentration as you go up the trunk, you can cause a gradual diffusion of water up the trunk (since water travels relatively freely through the cell walls) and thereby creates and exception to the rule of 10 meters being the maximum height for a column of water -- you've effectively added energy to the system to "pump" water up the trunk.

27

Automated Transportation Management System (ATMS)  

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

Re evised June 2010 Re evised June 2010 Autom The Depa Transport an integra system al outbound air. Its ea 1989 DOE significant operationa commerce electronic rates, pre transporta users eva shipments opportunit logistics im ATMS is i radioactiv shipments System ATMS is a activities p packaging including materials. common s lading, fre * W * C S * A * H * E * * O 0 mated T artment of Ene tation Manage ated web-base lowing users freight shipm arly developm E Inspector G t opportunitie al efficiency t e. Today's sy cally prepare s pare shipping ation bills befo aluate carrier s, and use co ties for system mprovements ts capability t ve and other h s in a comple Modules a modular sys performed by g and transpo radioactive a . Its modules shipment info eight bills, rate System Web Applic Carrier Eval Selection Automated

28

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

29

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,...

30

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

31

Climatic influences on hillslope soil transport efficiency  

E-Print Network (OSTI)

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 ...

Schurr, Naomi D. (Naomi Daika)

2014-01-01T23:59:59.000Z

32

Transportation Energy Efficiency Trends, 1972--1992  

SciTech Connect

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.

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

33

On the Road to Transportation Efficiency (Video)  

SciTech Connect

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.

Not Available

2014-03-01T23:59:59.000Z

34

What are Intelligent Transportation Intelligent Transportation Systems (ITS) are  

E-Print Network (OSTI)

What are Intelligent Transportation Systems? Intelligent Transportation Systems (ITS) are existing, combined in innovative ways, integrated into the management of our multimodal transportation system aimed at saving lives, time, and resources. Transportation is the backbone of our society-- the movement of people

Bertini, Robert L.

35

Pump Systems Optimization: Energy Efficiency  

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

Pump Systems Pump Systems Optimization: Energy Efficiency and Bottom-Line Savings Host this one-day course to help participants learn how to identify and reduce hidden operation and energy costs. Participants will: * Identify energy savings * Increase profitability * Increase reliability * Earn seven PDH credits Attendees of the "Pump Systems Optimization" one-day course will gain valuable new skills to help them improve centrifugal pump system efficiency to reduce energy and operating costs while earning seven professional development hour (PDH) credits from the Hydraulic Institute. Topics covered include:* * Why Efficient Pump Systems Are Important

36

Rural Intelligent Transportation Systems  

E-Print Network (OSTI)

System--activates lights on a STOP sign as a vehicle approaches the sign. · Curve Warning System System--records data on vehicle behavior that can be analyzed and used as a design input. Design the systems. Each system is made up of detection nodes that trigger the sign nodes. Results Foderberg

Minnesota, University of

37

Designing fast, efficient and flexible transport  

E-Print Network (OSTI)

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

Langendoen, Koen

38

Essays on Transportation and Energy Efficiency Policy  

E-Print Network (OSTI)

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...

West, Jeremy

2014-07-16T23:59:59.000Z

39

Office of Energy Efficiency and Renewable Energy Fiscal Year 2014 Budget Rollout – Sustainable Transportation  

Office of Energy Efficiency and Renewable Energy (EERE)

Office of Energy Efficiency and Renewable Energy Fiscal Year 2014 Budget Rollout – Sustainable Transportation, May 2013.

40

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

SciTech Connect

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.

King Wang

2009-07-31T23:59:59.000Z

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


41

The Geography of Transport Systems-Maritime Transportation | Open Energy  

Open Energy Info (EERE)

The Geography of Transport Systems-Maritime Transportation The Geography of Transport Systems-Maritime Transportation Jump to: navigation, search Tool Summary LAUNCH TOOL Name: The Geography of Transport Systems-Maritime Transportation Agency/Company /Organization: Hofstra University Sector: Energy Focus Area: Transportation Topics: Technology characterizations Resource Type: Publications, Technical report Website: people.hofstra.edu/geotrans/eng/ch3en/conc3en/ch3c4en.html Cost: Free Language: English References: Maritime Transportation[1] "Maritime transportation, similar to land and air modes, operates on its own space, which is at the same time geographical by its physical attributes, strategic by its control and commercial by its usage. While geographical considerations tend to be constant in time, strategic and

42

Energy Efficient Nanoelectronic System Design  

E-Print Network (OSTI)

Throughput ... Power Hungry !! Battery Hungry !! 05/21/2013 4 #12;Electronic System: Many Others (Same Story) Smarter ... Faster ... High Throughput ... Power Hungry !! Battery Hungry !! 05/21/2013 5 #12;Battery://www.newairplane.com One 787 Battery: 12 Cells / 32 V DC 05/21/2013 6 #12;Why Energy Efficient Design ? Environmental

Mohanty, Saraju P.

43

Challenges in Intelligent Transportation Systems  

E-Print Network (OSTI)

out cooperative systems in Europe. Testing ~22 use cases in traffic safety/efficiency and comfort: Interoperability of hardware and Software Data availability and data quality Scalability of technical testing: Unidirectional Radiation: Cumulative percentage packet error: Source: Source: S. Kaul et al., "Effect of Antenna

Gesbert, David

44

Intermodal Transportation Operation System ( ITOS ) For The State Of California  

E-Print Network (OSTI)

Operation Systems ..31transportation operation system (ITOS) of the future,Transportation Operation System. Figure 8 envisions TMCs as

Hall, Randolph; Parekh, Chethan; Thakker, Viral

1998-01-01T23:59:59.000Z

45

Management and Safety of Transportation Systems  

E-Print Network (OSTI)

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

Carver, Jeffrey C.

46

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

Office of Environmental Management (EM)

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...

47

Radioisotope thermoelectric generator transport trailer system  

SciTech Connect

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}

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

48

Advanced Energy Efficient Roof System  

SciTech Connect

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

Jane Davidson

2008-09-30T23:59:59.000Z

49

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

SciTech Connect

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.

Not Available

2014-12-01T23:59:59.000Z

50

Efficient Monte Carlo methods for light transport in scattering media  

E-Print Network (OSTI)

to the radiative transport equation. These techniquesof the radiative transport equation. These gradients takeaccount the full radiative transport equation, which leads

Jarosz, Wojciech

2008-01-01T23:59:59.000Z

51

Intelligent Transportation Systems Deployment Analysis System | Open Energy  

Open Energy Info (EERE)

Intelligent Transportation Systems Deployment Analysis System Intelligent Transportation Systems Deployment Analysis System Jump to: navigation, search Tool Summary Name: Intelligent Transportation Systems Deployment Analysis System Agency/Company /Organization: Cambridge Systematics Sector: Energy Focus Area: Transportation Resource Type: Software/modeling tools Website: idas.camsys.com/ Country: United States Northern America References: http://idas.camsys.com/ The ITS Deployment Analysis System (IDAS) is software developed by the Federal Highway Administration that can be used in planning for Intelligent Transportation System (ITS) deployments. State, regional, and local planners can use IDAS to estimate the benefits and costs of ITS investments - which are either alternatives to or enhancements of traditional highway

52

Improving pumping system efficiency at coal plants  

SciTech Connect

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.

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

2009-03-15T23:59:59.000Z

53

Visitor perceptions of alternative transportation systems and intelligent transportation systems in national parks  

E-Print Network (OSTI)

This dissertation examines the potential use of intelligent transportation systems (ITS) and alternative transportation systems (ATS) in national parks. Visitors at two of the national park units in California, Golden Gate National Recreation Area...

Dilworth, Virginia Ann

2004-09-30T23:59:59.000Z

54

Test for Pumping System Efficiency | Department of Energy  

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

Test for Pumping System Efficiency Test for Pumping System Efficiency This tip sheet discusses important considerations when conducting pumping system efficiency tests. PUMPING...

55

Webinar: Highly Efficient Solar Thermochemical Reaction Systems  

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

56

Highly Efficient Solar Thermochemical Reaction Systems  

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

Download presentation slides from the DOE Fuel Cell Technologies Office webinar "Highly Efficient Solar Thermochemical Reaction Systems" held on January 13, 2015.

57

Geographic information system applications in coal transportation analysis  

SciTech Connect

Geographic information systems (GIS) offer great potential to the coal transportation industry for capitalizing on the growing availability of spatially-referenced data. As computer-based systems for the collection, storage, retrieval and analysis of spatial data, generating information products in a variety of formats, GIS have a great capability to improve the efficiency and effectiveness of coal transportation operations, planning, engineering, and facilities management. Currently GIS are used in the transportation industry at large to analyze, and display information about network infrastructure, fleet operations, property ownership, routing and scheduling, and utilities. Current coal transportation applications include consumer service inquiries, train and locomotive scheduling, and evaluation of network usage. The paper describes the significant potential uses of GIS in the coal transportation sector when integrated with optimization and decision support systems, scientific visualization, data forecasting, and strategic system planning approaches. Ultimately consumer demand and the drive for economic efficiency are likely to stimulate the integration and management of spatial information across the entire coal chain.

Elmes, G. [West Virginia Univ., Morgantown, WV (United States)

1996-12-31T23:59:59.000Z

58

Efficient Power System State Estimation  

E-Print Network (OSTI)

measure the data from the system components such as transmission line power flows, bus power injections monitoring of power systems. 2. Background Power systems have four main components: transmission, sub-transmission failure or generator outages. In the normal insecure state, a system may not be able to handle

Lavaei, Javad

59

Energy efficiency achievements in China?s industrial and transport sectors: How do they rate?  

Science Journals Connector (OSTI)

Abstract China is experiencing intensified industrialisation and motorisation. In the world?s largest emerging economy, energy efficiency is expected to play a critical role in the ever-rising demand for energy. Based on factual overviews and numerical analysis, this article carries out an in-depth investigation into the effectiveness of policies announced or implemented in recent decades targeted at energy conservation in the energy intensive manufacturing and transportation sectors. It highlights nine energy intensive sectors that achieved major improvements in their energy technology efficiency efforts. Under the umbrella of the 11th Five-Year Plan, these sectors? performances reflect the effectiveness of China?s energy conservation governance. Numerous actions have been taken in China to reduce the road transport sector?s demand for energy and its GHG emissions by implementing fuel economy standards, promoting advanced energy efficient vehicles, and alternative fuels. Coal-based energy saving technologies, especially industrial furnace technologies, are critical for China?s near and medium-term energy saving. In the long run, renewable energy development and expanding the railway transport system are the most effective ways to reduce energy use and GHG emissions in China. Fuel economy standards could reduce oil consumption and \\{GHGs\\} by 34–35 per cent.

Libo Wu; Hong Huo

2014-01-01T23:59:59.000Z

60

Aquaporins comprise a family of water-transporting membrane proteins. All aquaporins are efficient water transporters, while  

E-Print Network (OSTI)

are efficient water transporters, while sustaining strict selectivity, even against protons, thereby maintaining509 Aquaporins comprise a family of water-transporting membrane proteins. All aquaporins. Further insights, particularly with respect to the dynamics of water permeation and the filter mechanism

de Groot, Bert

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


61

IBM and Energy Efficiency: Energy Managemnt Systems  

E-Print Network (OSTI)

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...

Veilleux, Y.

2013-01-01T23:59:59.000Z

62

Factor Influencing Logistics Service Providers Efficiency’ in Urban Distribution Systems  

Science Journals Connector (OSTI)

Abstract The increased urbanization and the awareness of freight transportation impacts have stressed the importance of City Logistics (CL) as a comprehensive approach aimed at mitigating the negative effects of distribution activities without penalizing social, cultural, and economic issues. In this context, a crucial role is played by logistics service providers (LSPs). This paper proposes an empirical analysis on the operational factors determining the level of efficiency of a LSP. This study represents an attempt to develop a panel of operational variables supporting the efficiency of the urban distribution system of LSPs. The potential benefits are both economic and environmental.

Alberto De Marco; Anna C. Cagliano; Giulio Mangano; Francesca Perfetti

2014-01-01T23:59:59.000Z

63

Coal transportation efficiency program: small mine operations. Final report  

SciTech Connect

This report presents the results of a comprehensive two-year examination of coal distribution in Appalachia. The study was performed to determine if there are opportunities to improve the market position and profitability of smaller coal producers by modifying their distribution systems. In the first phase of the study, an in-depth evaluation of the production, transportation, and market characteristics of small mines and producers resulted in the selection of three representative study areas: Clearfield County, Pennsylvania; Harlan County, Kentucky; and Logan County, West Virginia. In the next phase, a detailed analysis was performed and a preferred distribution strategy was defined for each study area. Finally, the results of the study area analysis were used to determine their applicability to other producing areas. In addition, the implications for the nation's rail system were defined in the event that there were large-scale changes in the coal distribution system for smaller producers. The appendix to the report presents a check list for evaluating the feasibility of potential distribution options.

Not Available

1982-01-01T23:59:59.000Z

64

Webinar: Highly Efficient Solar Thermochemical Reaction Systems  

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

65

Effective three-dimensional superhydrophobic aerogel-coated channel for high efficiency water-droplet transport  

Science Journals Connector (OSTI)

Three-dimensional superhydrophobic surfaces have been used effectively to optimize droplet transport efficiency in diverse fluidic systems. However the fabrication methods for superhydrophobic surfaces applicable to fluidic devices usually involve complicated process. Herein we report a simple but effective method of fabricating a superhydrophobic surface using organically modified silica aerogel. Superhydrophobic aerogel thin film having highly porous micro/nanostructured surface with methyl groups was realized inside a 3D channel by coating it. To demonstrate that the aerogel-coated surface effectively facilitates movement of water droplets the droplet-based flow characteristics regarding the triple line were conducted.

Hyungmo Kim; Joonwon Kim

2014-01-01T23:59:59.000Z

66

Electromagnetic effects on transportation systems  

SciTech Connect

Electronic and electrical system protection design can be used to eliminate deleterious effects from lightning, electromagnetic interference, and electrostatic discharges. Evaluation of conventional lightning protection systems using advanced computational modeling in conjunction with rocket-triggered lightning tests suggests that currently used lightning protection system design rules are inadequate and that significant improvements in best practices used for electronic and electrical system protection designs are possible. A case study of lightning induced upset and failure of a railway signal and control system is sketched.

Morris, M.E.; Dinallo, M.A.

1996-05-01T23:59:59.000Z

67

Computer Systems to Oil Pipeline Transporting  

E-Print Network (OSTI)

Computer systems in the pipeline oil transporting that the greatest amount of data can be gathered, analyzed and acted upon in the shortest amount of time. Most operators now have some form of computer based monitoring system employing either commercially available or custom developed software to run the system. This paper presented the SCADA systems to oil pipeline in concordance to the Romanian environmental reglementations.

Chis, Timur

2009-01-01T23:59:59.000Z

68

Alternative battery systems for transportation uses  

ScienceCinema (OSTI)

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.

Michael Thackeray

2013-06-05T23:59:59.000Z

69

Energy efficiency improvements in Chinese compressed air systems  

E-Print Network (OSTI)

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

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

2008-01-01T23:59:59.000Z

70

Cloud-Based Transportation Management System Delivers Savings  

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

DOE’s cloud based transportation management system (ATLAS) offers dramatically enhanced capabilities and modernization.

71

Ionic (Proton) Transport Hydrogen Separation Systems  

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

(Proton) (Proton) Transport Hydrogen Separation Systems Summary Session Participants -- Ionic Transport Balachandran, Balu Cornelius, Chris Fleming, Greg Glass, Robert Hartvigsen, Joseph Higgins, Richard King, David Paster, Mark Paul, Dilo Robbins, John Samells, Anthony Schwartz, Michael Schinski, Bill Smith, Ronald Van Bibber, Lawrence Zalesky, Rick Argonne National Laboratory Sandia National Laboratory Air Liquide Lawrence Livermore National Laboratory Cerametec, Inc. CeraMem Corporation Battelle, PNNL DOE Science Applications International Corporation ExxonMobil Eltron Research, Inc. ITN Energy Systems ChevronTexaco SRI Consulting SAIC ChevronTexaco Technology Ventures Performance Goals 4-5 years (5 years upper limit) (100,000 hrs is 12 years) High durability 250-350

72

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

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

DEMAND DEMAND Freight Transportation Demand: Energy-Efficient Scenarios for a Low-Carbon Future TRANSPORTATION ENERGY FUTURES SERIES: Freight Transportation Demand: Energy-Efficient Scenarios for a Low-Carbon Future A Study Sponsored by U.S. Department of Energy Office of Energy Efficiency and Renewable Energy March 2013 Prepared by CAMBRIDGE SYSTEMATICS Cambridge, MA 02140 under subcontract DGJ-1-11857-01 Technical monitoring performed by NATIONAL RENEWABLE ENERGY LABORATORY Golden, Colorado 80401-3305 managed by Alliance for Sustainable Energy, LLC for the U.S. DEPARTMENT OF ENERGY Under contract DC-A36-08GO28308 This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their

73

Transportation, Aging and Disposal Canister System Performance Specification: Revision 1  

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

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

74

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

Open Energy Info (EERE)

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

75

Ion transport membrane module and vessel system  

DOE Patents (OSTI)

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.

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

76

Ion transport membrane module and vessel system  

DOE Patents (OSTI)

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.

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

77

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

78

Industrial Compressed Air System Energy Efficiency Guidebook.  

SciTech Connect

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.

United States. Bonneville Power Administration.

1993-12-01T23:59:59.000Z

79

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

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

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

80

Transmural Catalysis - High Efficiency Catalyst Systems for NOx...  

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

Transmural Catalysis - High Efficiency Catalyst Systems for NOx Adsorbers and SCR Transmural Catalysis - High Efficiency Catalyst Systems for NOx Adsorbers and SCR Presentation...

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


81

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,...

82

Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact...  

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

Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact Sheet, 2011 Ultra Efficient Combined Heat, Hydrogen, and Power System - Fact Sheet, 2011 FuelCell Energy, Inc., in...

83

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

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

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

84

Thermally efficient compact fluorescent fixture systems  

SciTech Connect

Compact fluorescent lamps that can be inserted into conventional light fixtures are rapidly gaining acceptance as both a viable retrofit and new design approach to reducing lighting loads. Ideally, the compact fluorescent lamp should have the same light output as the incandescent lamp it replaces, but overheating inside typically small enclosed fixtures can reduce lumen output and hence lighting fixture efficiency by 15 to 20 percent. Fortunately, simple fixture modifications can erase this efficiency penalty, so that the full efficiency benefit of replacing incandescent lamps with fluorescent lamps can be realized. The paper describes such modifications and presents experimental data documenting the potential efficiency enhancement associated with thermal control systems. 4 refs., 7 figs.

Siminovitch, M.J.; Rubinstein, F.M.; Packer, M.

1991-04-01T23:59:59.000Z

85

Solar ADEPT: Efficient Solar Energy Systems  

SciTech Connect

Solar ADEPT Project: The 7 projects that make up ARPA-E's Solar ADEPT program, short for 'Solar Agile Delivery of Electrical Power Technology,' aim to improve the performance of photovoltaic (PV) solar energy systems, which convert the sun's rays into electricity. Solar ADEPT projects are integrating advanced electrical components into PV systems to make the process of converting solar energy to electricity more efficient.

None

2011-01-01T23:59:59.000Z

86

Thermodynamic efficiency and entropy production in the climate system  

Science Journals Connector (OSTI)

We present an outlook on the climate system thermodynamics. First, we construct an equivalent Carnot engine with efficiency ? and frame the Lorenz energy cycle in a macroscale thermodynamic context. Then, by exploiting the second law, we prove that the lower bound to the entropy production is ? times the integrated absolute value of the internal entropy fluctuations. An exergetic interpretation is also proposed. Finally, the controversial maximum entropy production principle is reinterpreted as requiring the joint optimization of heat transport and mechanical work production. These results provide tools for climate change analysis and for climate models’ validation.

Valerio Lucarini

2009-08-21T23:59:59.000Z

87

Liners for ion transport membrane systems  

SciTech Connect

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.

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

2010-08-10T23:59:59.000Z

88

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

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

AURORA Program Overview Topic 4A. Transport within the PEM Stack / Transport Studies Transport Studies Enabling Efficiency Optimization of Cost-Competitive Fuel Cell Stacks Award#: DE-EE0000472 US DOE Fuel Cell Projects Kickoff Meeting Washington, DC September 30, 2009 Program Objectives The objective of this program is to optimize the efficiency of a stack technology meeting DOE cost targets. As cost reduction is of central importance in commercialization, the objective of this program addresses all fuel cell applications. AURORA C. Performance Technical Barriers Premise: DOE cost targets can be met by jointly exceeding both the Pt loading (1.0 W/cm2) targets.

89

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

E-Print Network (OSTI)

LBNL-58636 Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable Efficient Cleanrooms Efficient HVAC Water Systems: Variable-Speed-Drive Chillers Tengfang Xu Contents HVAC.................................................................................................................................... 6 #12;HVAC Water Systems Variable-Speed-Drive Chillers Summary Cleanroom energy benchmarking data

90

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

E-Print Network (OSTI)

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 ...

Weibel, Roland E. (Roland Everett)

2010-01-01T23:59:59.000Z

91

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

92

Efficient Energy Transport in Photosynthesis: Roles of Coherence and Entanglement  

SciTech Connect

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.

Patel, Apoorva D. [Centre for High Energy Physics and Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560012 (India)

2011-09-23T23:59:59.000Z

93

Efficient Energy Transport in Photosynthesis: Roles of Coherence and Entanglement  

E-Print Network (OSTI)

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.

Apoorva D. Patel

2011-04-07T23:59:59.000Z

94

Efficient Energy Transport in Photosynthesis: Roles of Coherence and Entanglement  

E-Print Network (OSTI)

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.

Patel, Apoorva D

2011-01-01T23:59:59.000Z

95

Heat transport system, method and material  

DOE Patents (OSTI)

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.

Musinski, D.L.

1987-04-28T23:59:59.000Z

96

The value of RFID in transportation : from greater operational efficiency to collaborative transportation management  

E-Print Network (OSTI)

This paper assesses the value of Radio Frequency Identification (RFID) in the transportation forecasting, planning, and execution processes for truckload (TL) and less than truckload (LTL) services. The results show that ...

Guitton, Antoine, 1963-

2004-01-01T23:59:59.000Z

97

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

E-Print Network (OSTI)

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

Bertini, Robert L.

98

Developing Public Transport Network systems: The DIANA approach  

Science Journals Connector (OSTI)

In this paper we introduce the project DIANA, which deals with the development of innovative algorithms and decision support systems for the design of public transport network systems. The project aims to design transportation networks with conventional ... Keywords: genetic algorithms, reinforcement learning, transportation systems

D. I. Kosmopoulos; M. Kalohristianakis; A. Malamos; Sotirios Chatzis; M. Pternea; K. Kepaptsoglou; M. Karlaftis

2014-10-01T23:59:59.000Z

99

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

Open Energy Info (EERE)

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

100

Research on Energy Efficiency of DC Distribution System  

Science Journals Connector (OSTI)

Abstract Energy efficiency of DC distribution systems is researched in this paper. Efficiency calculation models of feeders and loads are established, efficiencies of AC/DC, DC/DC and DC/AC are analyzed. Moreover, energy efficiencies of an AC system and two DC systems, monopole and bipolar, are calculated and compared. The efficiency improvement of office building supplied by DC power system compared to supply by AC power system is demonstrated. From analysis, it is showed that the energy efficiency is higher in DC distribution system than AC distribution system.

Zifa Liu; Mengyu Li

2014-01-01T23:59:59.000Z

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


101

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

SciTech Connect

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.

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

1997-06-01T23:59:59.000Z

102

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

SciTech Connect

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.

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

2013-03-01T23:59:59.000Z

103

Sustainable Transportation (Fact Sheet), Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy (DOE)  

Office of Energy Efficiency and Renewable Energy (EERE)

This document highlights DOE's Office of Energy Efficiency and Renewable Energy's advancements in transportation technologies, alternative fuels, and fuel cell technologies.

104

Ground facilities for a VTOL intercity air transportation system  

E-Print Network (OSTI)

Introduction: This study covers the design of ground facilities, or metroports, for a future form of short haul intercity air transportation, the VTOL Airbus system as described by previous M.I.T. Flight Transportation ...

Allen Edward

1970-01-01T23:59:59.000Z

105

Innovative technology summary report: Transportable vitrification system  

SciTech Connect

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.

NONE

1998-09-01T23:59:59.000Z

106

Efficient, Portable, and Robust Extension of Operating System Functionality  

E-Print Network (OSTI)

Efficient, Portable, and Robust Extension of Operating System Functionality Amin Vahdat, Douglas, operating systems are not chosen for underlying system features, but rather for the performance of the underlying hardware, available application programs, and system stability. Consequently, operating system

Newhall, Tia

107

A management scheme for improving transportation efficiency and contributing to the enhancement of the social fabric  

Science Journals Connector (OSTI)

The continuously increasing need for mobility has brought about not only significant facilities in several aspects of human initiative, but also growing traffic congestions, a phenomenon that leads to unpleasant everyday situations at a short time level, ... Keywords: Car pooling, Management scheme, Social fabric, Transportation efficiency, User profile

Y. Kritikou; G. Dimitrakopoulos; E. Dimitrellou; P. Demestichas

2009-11-01T23:59:59.000Z

108

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

E-Print Network (OSTI)

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

Hong, Tainzhen

2010-01-01T23:59:59.000Z

109

The future of sustainable transport system for Europe  

Science Journals Connector (OSTI)

The EU has launched targets for energy efficiency and the reduction in pollutant emissions in the transport sector. It establishes a framework to foster the promotion and development of a market for clean vehicles. In 2011 the EU passed a "Roadmap to ... Keywords: Biofuels, EU transport policy, Electric cars, Energy dependence, GHG emissions, Road traffic

Dieter Ei?el; Chin Peng Chu

2014-08-01T23:59:59.000Z

110

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

SciTech Connect

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.

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

2013-03-01T23:59:59.000Z

111

Technology and System Level Demonstration of Highly Efficient...  

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

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

112

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

Energy Savers (EERE)

MANUFACTURING OFFICE Advanced, Energy- Efficient Hybrid Membrane System for Industrial Water Reuse New Hybrid Membrane System Utilizes Industrial Waste Heat to Power Water...

113

Fuel cell system for transportation applications  

DOE Patents (OSTI)

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.

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

1993-01-01T23:59:59.000Z

114

Fuel cell system for transportation applications  

DOE Patents (OSTI)

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.

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

1993-09-28T23:59:59.000Z

115

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

E-Print Network (OSTI)

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 ...

Northrop, Paul W. C.

116

Voltage stabilization system in traction substation of urban electric transport  

Science Journals Connector (OSTI)

The direct current-voltage stabilization system using a high-frequency link in traction substations of urban electric transport based on applying...

S. V. Shapiro; S. F. Muftiev

2011-02-01T23:59:59.000Z

117

Energy Efficient Pump Control for an Offshore Oil Processing System  

E-Print Network (OSTI)

Energy Efficient Pump Control for an Offshore Oil Processing System Zhenyu Yang Kian Soleiman Bo, Denmark. Abstract: The energy efficient control of a pump system for an offshore oil processing system control, energy saving 1. INTRODUCTION Pump systems have been extensively used in offshore oil & gas

Yang, Zhenyu

118

IntelliCarTS: Intelligent Cars Transportation System Ashwin Gumaste, Rahul Singhai and Anirudh Sahoo  

E-Print Network (OSTI)

, cooperation and cost efficiency. These characteristics enable avoidance of collision between vehicles Sahoo Department of Computer Science and Engineering Indian Institute of Technology, Bombay, PowaiCarTS (Intelligent Car Transport System), a Vehicle-to-Vehicle (V2V) anti-collision mechanism that determines

Sahoo, Anirudha

119

The National Energy Modeling System: An Overview 1998 - Transportation  

Gasoline and Diesel Fuel Update (EIA)

TRANSPORTATION DEMAND MODULE TRANSPORTATION DEMAND MODULE blueball.gif (205 bytes) Fuel Economy Submodule blueball.gif (205 bytes) Regional Sales Submodule blueball.gif (205 bytes) Alternative-Fuel Vehicle Submodule blueball.gif (205 bytes) Light-Duty Vehicle Stock Submodule blueball.gif (205 bytes) Vehicle-Miles Traveled (VMT) Submodule blueball.gif (205 bytes) Light-Duty Vehicle Commercial Fleet Submodule blueball.gif (205 bytes) Commercial Light Truck Submodule blueball.gif (205 bytes) Air Travel Demand Submodule blueball.gif (205 bytes) Aircraft Fleet Efficiency Submodule blueball.gif (205 bytes) Freight Transport Submodule blueball.gif (205 bytes) Miscellaneous Energy Use Submodule The transportation demand module (TRAN) forecasts the consumption of transportation sector fuels by transportation mode, including the use of

120

Transportation Planning & Decision Science Group Transportation Systems Research Group  

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

5 5 2360 Cherahala Boulevard Knoxville, TN 37932 2012 Fact of the Week Each week the U.S. DOE's Vehicle Technologies Office (VTO) posts a Fact of the Week on their website. These Facts provide statistical information, usually in the form of charts and tables, on vehicle sales, fuel economy, gasoline prices, and other transportation- related trends. Each Fact is a stand-alone page that includes a graph, text explaining the significance of the data, the supporting information on which the graph was based, and the source of the data. Stacy Davis, Susan Diegel, and Sheila Moore published an ORNL report which is a compilation of the Facts that were posted during calendar year 2012. The Facts were written and prepared by

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


121

High Efficiency Engine Systems Development and Evaluation  

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

efficiency Limited by non-ideal processes: friction, combustion irreversibility, heat loss, inefficient work extraction, etc * Additional factors beyond the scope of...

122

Using Transportation Technology to Increase Efficiencies in Shipping: Real Life Experience in Oak Ridge  

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

D Dean Newton D Dean Newton Turnkey Transportation Services, LLC RFITS Program Briefing Radio Frequency Identification Transportation System Recognize the Reality 2 "When the rate of change inside an institution becomes slower than the rate of change outside, the end is in sight. The only question is when." Jack Welch, former CEO, General Electric Duplication is not Redundancy 3 Multiple Waste Management business systems exist across the Enterprise. They are duplicated across contractors and more than often, do not exchange data elements between systems and/or contractors. Different sites and contractors employ multiple processes and formulas to base business decisions associated with

123

Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport  

E-Print Network (OSTI)

Excitation transfer through interacting systems plays an important role in many areas of physics, chemistry, and biology. The uncontrollable interaction of the transmission network with a noisy environment is usually assumed to deteriorate its transport capacity, especially so when the system is fundamentally quantum mechanical. Here we identify key mechanisms through which noise such as dephasing, perhaps counter intuitively, may actually aid transport through a dissipative network by opening up additional pathways for excitation transfer. We show that these are processes that lead to the inhibition of destructive interference and exploitation of line broadening effects. We illustrate how these mechanisms operate on a fully connected network by developing a powerful analytical technique that identifies the invariant (excitation trapping) subspaces of a given Hamiltonian. Finally, we show how these principles can explain the remarkable efficiency and robustness of excitation energy transfer from the light-harvesting chlorosomes to the bacterial reaction center in photosynthetic complexes and present a numerical analysis of excitation transport across the Fenna-Matthew-Olson (FMO) complex together with a brief analysis of its entanglement properties. Our results show that, in general, it is the careful interplay of quantum mechanical features and the unavoidable environmental noise that will lead to an optimal system performance.

Filippo Caruso; Alex W. Chin; Animesh Datta; Susana F. Huelga; Martin B. Plenio

2009-01-28T23:59:59.000Z

124

Theory of System Level Efficiency in Health Care  

Science Journals Connector (OSTI)

Abstract Systems level efficiency concerns understanding how well a health system uses the resources at its disposal to improve health and secure related health system objectives. This article first introduces the concept of a health system. It then considers the theory behind systems level efficiency and related concepts such as productivity, technical and allocative efficiency, and goes on to assess the key challenges and debates faced in this area of research. The article relates these theoretical concepts back to health policy to indicate the types of questions that might be considered in any analysis of technical or allocative efficiency.

I. Papanicolas; P.C. Smith

2014-01-01T23:59:59.000Z

125

Transportation Energy Futures Series: Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehilce Sector  

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

COMMERCIAL TRUCKS COMMERCIAL TRUCKS AVIATION MARINE MODES RAILROADS PIPELINES OFF-ROAD EQUIPMENT Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehicle Sector TRANSPORTATION ENERGY FUTURES SERIES: Potential for Energy Efficiency Improvement Beyond the Light-Duty-Vehicle Sector A Study Sponsored by U.S. Department of Energy Office of Energy Efficiency and Renewable Energy February 2013 Prepared by ARGONNE NATIONAL LABORATORY Argonne, IL 60439 managed by U Chicago Argonne, LLC for the U.S. DEPARTMENT OF ENERGY under contract DE-AC02-06CH11357 This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or

126

Project Profile: High-Efficiency Thermal Energy Storage System...  

Office of Environmental Management (EM)

the National Laboratory R&D competitive funding opportunity, will design, develop, and test a prototype high-temperature and high-efficiency thermal energy storage (TES) system...

127

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

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

High Efficiency Engine Systems Development and Evaluation 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation...

128

Energy Efficiency in Compressed Air Systems  

E-Print Network (OSTI)

of compressor rooms which employ multiple compressors can bring major benefits. Intelligent central controller constantly monitors air demands and select the most efficient combination of machines and compressor technologies to meet this demand in the most... efficient way. Without central controller, it is necessary to maintain different pressure settings for different compressors in a so called pressure cascade. This wastes energy as the compressors develop a higher than required pressure. Central...

Hingorani, A.; Pavlov, A.

2010-01-01T23:59:59.000Z

129

Procurement of a fully licensed radioisotope thermoelectric generator transportation system  

SciTech Connect

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.

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

130

Procurement of a fully licensed radioisotope thermoelectric generator transportation system  

SciTech Connect

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.

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

1990-10-01T23:59:59.000Z

131

Energy Efficiency Labeling System & its Development in China  

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

Labeling Labeling System & Its Development in China Cheng Jianhong Berkeley, U.S. 6 May, 2011 The Second U.S.-China Energy Efficiency Forum  Initiated in 2005 The issue of Measures for the Administration of Energy Efficiency Labels ([2004] Decree No. 17) by NDRC and AQSIQ marked that energy efficiency labeling system was formally established in China. I. Concept of Energy Efficiency Labels in China Positive externalities of energy conservation management Dissymmetry of energy efficiency information Disclosure of energy efficiency information Supervision over information authenticity Essence of energy efficiency labeling system 10 One of the Tools for Market Transformation Energy Conservation Law Product Quality Law Regulations of the People's Republic of China on Certification

132

Efficient scale for photovoltaic systems and Florida's solar rebate program  

Science Journals Connector (OSTI)

This paper presents a critical view of Florida's photovoltaic (PV) subsidy system and proposes an econometric model of PV system installation and generation costs. Using information on currently installed systems, average installation cost relations for residential and commercial systems are estimated and cost-efficient scales of installation panel wattage are identified. Productive efficiency in annual generating capacity is also examined under flexible panel efficiency assumptions. We identify potential gains in efficiency and suggest changes in subsidy system constraints, providing important guidance for the implementation of future incentive programs. Specifically, we find that the subsidy system discouraged residential applicants from installing at the cost-efficient scale but over-incentivized commercial applicants, resulting in inefficiently sized installations.

Christopher S. Burkart; Nestor M. Arguea

2012-01-01T23:59:59.000Z

133

Highly Energy Efficient Wall Systems Research Project | Department of  

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

Highly Energy Efficient Wall Systems Highly Energy Efficient Wall Systems Research Project Highly Energy Efficient Wall Systems Research Project The Department of Energy is currently conducting research into highly energy efficient wall systems. Walls with high R-values are better insulators, and their development can help buildings come closer to having zero net energy consumption. Project Description This project seeks to develop a commercially viable wall system up to R-40 through integration of vacuum technology with the exterior insulated façade system (EIFS). Dow Corning will develop a wall system configuration of expanded polystyrene vacuum isolation panels that can be specified for R-values of 20, 30, and 40. This project also aims to develop a unitized protection system of vacuum isolation panels and to validate current code

134

CIBO's Energy Efficiency Handbook for Steam Power Systems  

E-Print Network (OSTI)

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...

Bessette, R. D.

135

Use of Computational Intelligence in Illumination Systems Searching Energetic Efficiency  

E-Print Network (OSTI)

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...

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

2007-01-01T23:59:59.000Z

136

Energy efficient HVAC system features thermal storage and heat recovery  

SciTech Connect

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.

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

1994-03-01T23:59:59.000Z

137

Effect of isomers on quantum transport through molecular bridge system  

E-Print Network (OSTI)

Quantum transport for different models of isomer molecules attached to two semi-infinite leads is studied on the basis of Green's function technique. Electronic transport properties are significantly affected by (a) the relative position of the atoms in these molecules and (b) the molecule-to-lead coupling strength of these molecular bridge systems.

Santanu K. Maiti

2009-01-08T23:59:59.000Z

138

Efficient, numerically stable multiband k?p treatment of quantum transport in semiconductor heterostructures  

Science Journals Connector (OSTI)

We present a method for treating quantum transport in heterostructures using multiband k?p theory. The method is similar to the multiband quantum transmitting boundary method developed earlier for use with multiband tight-binding band structure models, being efficient, numerically stable, and easy to implement. It also has the advantages of being intuitive to use and easy to generalize to include magnetic field and strain effects. We have applied this method to hole tunneling in prototypical p-type GaAs/AlAs double-barrier structure. © 1996 The American Physical Society.

Y. X. Liu; D. Z. -Y. Ting; T. C. McGill

1996-08-15T23:59:59.000Z

139

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network (OSTI)

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

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

140

VISION 2050: An Integrated National Transportation System  

E-Print Network (OSTI)

of the Federal Aviation Administration (FAA) Research, Engineering and Development Advisory Committee (REDAC advisory committees, including the FAA REDAC, NASA ASTAC, and the U.S. Department of Transportation (DOT February 2001 Copies available on these Web sites: http://scitech.dot.gov http://research.faa.gov/aar/redac

Handy, Susan L.

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


142

On the solute transport in an aquifer-aquitard system  

E-Print Network (OSTI)

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...

Bian, Aiguo

2009-05-15T23:59:59.000Z

143

Embedded localization and communication system designed for intelligent guided transports  

Science Journals Connector (OSTI)

Nowadays, many embedded sensors allowing localization and communication are being developed to improve reliability, security and define new exploitation modes in intelligent guided transports. This paper presents the architecture of a new system allowing ...

Yassin ElHillali; Atika Rivenq; Charles Tatkeu; J. M. Rouvaen; J. P. Ghys

2007-01-01T23:59:59.000Z

144

Magazine system for multiple sample transport from air into UHV  

Science Journals Connector (OSTI)

The time required to exchange specimens in a UHV system can be reduced considerably by a sample airlock. A low-cost sample exchange system is described which was originally constructed for an Auger spectrometer, but may be applied to other UHV systems as well. The essential parts are a magnetically coupled transfer rod, a magazine for the simultaneous transport of six samples, a bayonet clip to fix the samples sequentially to a carousel sample holder and a tilting mechanism in the specimen stage to bring the transferred samples into an optimum position for the further experiment. The system can be adapted to the multiple sample transport between two completely separated UHV systems.

W Pamler; W Reill; S Dorfner; K Roll

1985-01-01T23:59:59.000Z

145

The National Energy Modeling System: An Overview 2000 - Transportation  

Gasoline and Diesel Fuel Update (EIA)

transportation demand module (TRAN) forecasts the consumption of transportation sector fuels by transportation mode, including the use of renewables and alternative fuels, subject to delivered prices of energy fuels and macroeconomic variables, including disposable personal income, gross domestic product, level of imports and exports, industrial output, new car and light truck sales, and population. The structure of the module is shown in Figure 8. transportation demand module (TRAN) forecasts the consumption of transportation sector fuels by transportation mode, including the use of renewables and alternative fuels, subject to delivered prices of energy fuels and macroeconomic variables, including disposable personal income, gross domestic product, level of imports and exports, industrial output, new car and light truck sales, and population. The structure of the module is shown in Figure 8. Figure 8. Transportation Demand Module Structure NEMS projections of future fuel prices influence the fuel efficiency, vehicle-miles traveled, and alternative-fuel vehicle (AFV) market penetration for the current fleet of vehicles. Alternative-fuel shares are projected on the basis of a multinomial logit vehicle attribute model, subject to State and Federal government mandates.

146

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

SciTech Connect

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.

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

147

Security plan for the Automated Transportation Management System  

SciTech Connect

The Automated Transportation Management System (ATMS) is an unclassified non-sensitive system consisting of hardware and software designed to facilitate the shipment of goods for the US Department of Energy (DOE). The system is secured against waste, fraud, abuse, misuse, and programming errors through a series of security measures that are discussed in detail in this document.

Not Available

1994-04-01T23:59:59.000Z

148

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 Presentation 3 A fuel cell vehicle would contain the PEMFC system modeled in this project along with additional

149

NREL: Learning - Center for Transportation Technologies and Systems Video  

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

Center for Transportation Technologies and Systems Video (Text Version) Center for Transportation Technologies and Systems Video (Text Version) This is the text version for the Center for Transportation Technologies and Systems video. The video opens with an image of a dark red flower, trembling in the breeze. It pulls out to a shot of grass-covered hills. Finally, it turns to an image of a truck driving down a highway. (Voiceover) It is one of our greatest challenges: to steer the future of transportation in a more secure, sustainable direction. The video follows a presentation given outside the NREL campus. Several people are sitting outside in rows of chairs, listening to NREL's Director speak from behind a podium. Dan Arvizu, NREL Director: "Today we launch the NREL vehicle test fleet." The video fades in to an image of researchers walking through a parking lot

150

Implementation and Rejection of Industrial Steam System Energy Efficiency  

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

Implementation and Rejection of Industrial Steam System Energy Efficiency Implementation and Rejection of Industrial Steam System Energy Efficiency Measures Title Implementation and Rejection of Industrial Steam System Energy Efficiency Measures Publication Type Journal Article Refereed Designation Unknown LBNL Report Number LBNL-6288E Year of Publication 2013 Authors Therkelsen, Peter L., and Aimee T. McKane Journal Energy Policy Volume 57 Start Page 318 Date Published 06/2013 Publisher Lawrence Berkeley National Laboratory Keywords industrial energy efficiency, industrial energy efficiency barriers, steam system efficiency Abstract 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.

151

System Transition: Dynamics of Change in the US Air TransportationSystem  

E-Print Network (OSTI)

System Transition: Dynamics of Change in the US Air TransportationSystem by Aleksandra L Education Committee #12;#12;System Transition: Dynamics of Change in the US Air Transportation System of the requirements for the degree of Doctor of Philosophy in Technology, Management, and Policy Abstract The US Air

de Weck, Olivier L.

152

Improving Industrial Refrigeration System Efficiency - Actual Applications  

E-Print Network (OSTI)

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...

White, T. L.

1980-01-01T23:59:59.000Z

153

HVAC & Building Management Control System Energy Efficiency Replacements  

SciTech Connect

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.

Hernandez, Adriana

2012-09-21T23:59:59.000Z

154

Spectrally Efficient Modulation and Turbo Coding for Communication Systems  

E-Print Network (OSTI)

Spectrally Efficient Modulation and Turbo Coding for Communication Systems Amer H. Alhabsi. · Modulation. · Turbo coding. · Spectral efficient modulation with TC. · Parity Assisted Decoding. · Summary encoder · It expands the data by adding redundancy. · Redundancy is added in a systematic fashion

Akl, Robert

155

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

ScienceCinema (OSTI)

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

None

2013-05-29T23:59:59.000Z

156

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

SciTech Connect

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

None

2010-01-01T23:59:59.000Z

157

Motor System Energy Efficiency Supply Curves: A Methodology for Assessing  

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

Motor System Energy Efficiency Supply Curves: A Methodology for Assessing Motor System Energy Efficiency Supply Curves: A Methodology for Assessing the Energy Efficiency Potential of Industrial Motor Systems Speaker(s): Ali Hasanbeigi Date: February 8, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Aimee McKane Motor-driven equipment accounts for approximately 60% of manufacturing final electricity use worldwide. A major barrier to effective policymaking, and to more global acceptance of the energy efficiency potential in industrial motor systems, is the lack of a transparent methodology for quantifying the magnitude and cost-effectiveness of these energy savings. This paper presents the results of groundbreaking analyses conducted for five countries and one region to begin to address this barrier. Using a combination of expert opinion and available data from the United States,

158

Energy-efficient system design for mobile processing platforms  

E-Print Network (OSTI)

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 ...

Rithe, Rahul (Rahulkumar Jagdish)

2014-01-01T23:59:59.000Z

159

Lean Gasoline System Development for Fuel Efficient Small Car...  

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

Small Car Lean Gasoline System Development for Fuel Efficient Small Car Vehicle Technologies Office Merit Review 2014: ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine...

160

Design and global optimization of high-efficiency thermophotovoltaic systems  

E-Print Network (OSTI)

Despite their great promise, small experimental thermophotovoltaic (TPV) systems at 1000 K generally exhibit extremely low power conversion efficiencies (approximately 1%), due to heat losses such as thermal emission of ...

Bermel, Peter A.

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


161

Webinar January 13: Highly Efficient Solar Thermochemical Reaction Systems  

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

The Energy Department will present a live webinar entitled "Highly Efficient Solar Thermochemical Reaction Systems" on Tuesday, January 13, from 12:00 to 1:00 p.m. Eastern Standard Time.

162

Financing; A Cost Effective Alternative When Upgrading Energy Efficient Systems  

E-Print Network (OSTI)

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...

Ertle, J. M.

163

NREL: News Feature - Solar System Tops Off Efficient NREL Building  

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

Solar System Tops Off Efficient NREL Building September 29, 2010 Photo of the sun reflecting off of a solar panel on a roof. Enlarge image More than 1,800 solar panels are being...

164

Air Quality and Intelligent Transportation Systems: Understanding Integrated Innovation, Deployment and Adaptation of Public Technologies  

E-Print Network (OSTI)

Air Quality and Intelligent Transportation Systems: Understanding Integrated Innovation, Deployment;2 Air Quality and Intelligent Transportation Systems: Understanding Integrated Innovation, Deployment between state and local transportation investments and metropolitan air quality goals. In this context

de Weck, Olivier L.

165

Microcomputer-based information feedback system for improving tractor efficiency  

E-Print Network (OSTI)

MICROCOMPUTER-BASED INFORMATION FEEDBACK SYSTEM FOR IMPROVING TRACTOR EFFICIENCY A Thesis by JOSEPH GROGAN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1985 Major Subject: Agricultural Engineering MICROCOMPUTER-BASED INFORMATION FEEDBACK SYSTEM FOR IMPROVING TRACTOR EFFICIENCY A Thesis JOSEPH GROGAN Approved as to style and content by: Dr. ill A. Stout (Chairman of Committee) Dr...

Grogan, Joseph

2012-06-07T23:59:59.000Z

166

Isotope Transport and Exchange within the Coso Geothermal System | Open  

Open Energy Info (EERE)

Transport and Exchange within the Coso Geothermal System Transport and Exchange within the Coso Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Isotope Transport and Exchange within the Coso Geothermal System Details Activities (1) Areas (1) Regions (0) Abstract: We are investigating the plumbing of the Coso geothermal system and the nearby Coso Hot Springs using finite element models of single-phase, variable-density fluid flow, conductive- convective heat transfer, fluid-rock isotope exchange, and groundwater residence times. Using detailed seismic reflection data and geologic mapping, we constructed a regional crosssectional model that extends laterally from the Sierra Nevada to Wildhorse Mesa, west of the Argus Range. The base of the model terminates at the brittle-ductile transition zone. A sensitivity study was

167

Fabrication of catalyzed ion transport membrane systems  

DOE Patents (OSTI)

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).

Carolan, Michael Francis; Kibby, Charles Leonard

2013-06-04T23:59:59.000Z

169

Office of Energy Efficiency and Renewable Energy Fiscal Year 2014 Budget Rollout … Sustainable Transportation  

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

Dr. Kathleen Hogan, Deputy Assistant Secretary Dr. Kathleen Hogan, Deputy Assistant Secretary May 2, 2013 Office of Energy Efficiency and Renewable Energy Fiscal Year 2014 Budget Rollout - Sustainable Transportation 2 EERE's National Mission To create American leadership in the global transition to a clean energy economy 1) High-Impact Research, Development, and Demonstration to Make Clean Energy as Affordable and Convenient as Traditional Forms of Energy 2) Breaking Down Barriers to Market Entry 3 Why Clean Energy Matters To America * Winning the most important global economic development race of the 21 st century * Creating jobs through American innovation * Enhancing energy security by reducing our dependence on foreign oil and gas * Saving money by cutting energy costs for American

170

Fuel-Mix, Fuel Efficiency, and Transport Demand Affect Prospects for Biofuels in Northern Europe  

Science Journals Connector (OSTI)

Consumption structure parameters describe how the four road transport processes are being consumed, such as, for example, the amount of car-sharing and private vehicle ownership per capita—and are based on country-specific trend extrapolation using data provided by national statistical agencies and other research institutions (13-17, 35). ... As Ohrogge et al. point out, although there are uncertainties in the pace of electric car development and market penetration, future strategies aimed at promoting bioelectricity instead of ethanol for substituting conventional fuels like gasoline in cars and promoting more diesel engines in heavier vehicles may be the best route to the goal of reducing petroleum consumption and CO2 emissions (69). ... In the case of Sweden, where forest operations are highly and efficiently mechanized, this stage consumes more fossil fuels than other elements of the wood supply chain (such as silviculture and logging operations). ...

Ryan M. Bright; Anders Hammer Strømman

2010-02-17T23:59:59.000Z

171

Engineering intracellular active transport systems as in vivo biomolecular tools.  

SciTech Connect

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.

Bachand, George David; Carroll-Portillo, Amanda

2006-11-01T23:59:59.000Z

172

Electric motor systems in developing countries: Opportunities for efficiency improvement  

SciTech Connect

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.

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

173

Dual fuel engine control systems for transportation applications  

SciTech Connect

Microprocessor control systems have been developed for dual fuel diesel engines intended for transportation applications. Control system requirements for transportation engines are more demanding than for stationary engines, as the system must be able to cope with variable speed and load. Detailed fuel maps were determined for both normally aspirated and turbocharged diesel engines based on the criterion that the engine did not operate in the regimes where knock or incomplete combustion occurred. The control system was developed so that the engine would follow the detailed fuel map. The input variables to the control system are engine speed and load. Based on this, the system then controls the amount of natural gas and diesel fuel supplied to the engine. The performance of the system is briefly summarized.

Gettel, L.E.; Perry, G.C.; Boisvert, J.; O'Sullivan, P.J.

1987-10-01T23:59:59.000Z

174

Energy efficiency in wireless communication systems  

DOE Patents (OSTI)

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.

Caffrey, Michael Paul; Palmer, Joseph McRae

2012-12-11T23:59:59.000Z

175

Electricity for road transport, flexible power systems and wind power  

Open Energy Info (EERE)

road transport, flexible power systems and wind power 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 wind power Country Denmark Coordinates 56.26392°, 9.501785° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":56.26392,"lon":9.501785,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

176

Feasibility study for a transportation operations system cask maintenance facility  

SciTech Connect

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.

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

1991-01-01T23:59:59.000Z

177

Transportation Routing Analysis Geographic Information System...  

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

Analysis Geographic Information System (TRAGIS) to Spent Fuel Routing Analysis P. E. Johnson R.R. Rawl Oak Ridge National Laboratory TRAGIS is being used by OCRWM to identify...

178

Tuning energy transport in solar thermal systems using nanostructured materials  

E-Print Network (OSTI)

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 ...

Lenert, Andrej

2014-01-01T23:59:59.000Z

179

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

SciTech Connect

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.

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

180

Low emission boiler system: Clean and efficient power from coal  

SciTech Connect

The US Department of Energy, Federal Energy Technology Center, is working with private industry to develop the Low Emission Boiler System (LEBS), an advanced coal-fired power generation system for the 21st century. LEBS will provide the utility industry with an opportunity to meet the anticipated increase in electricity demand throughout the world by offering cleaner and more efficient coal-fired power plants. LEBS has significantly higher thermal efficiency, superior environmental performance and a lower cost of electricity than conventional coal-fired systems. This paper presents an overall summary of the LEBS program.

Ruth, L.; Winslow, J. [Dept. of Energy, Pittsburgh, PA (United States). Federal Energy Technology Center; Ramezan, M. [Burns and Roe Services Corp., Pittsburgh, PA (United States)

1997-09-01T23:59:59.000Z

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


181

Thaw flow control for liquid heat transport systems  

DOE Patents (OSTI)

In a liquid metal heat transport system including a source of thaw heat for use in a space reactor power system, the thaw flow throttle or control comprises a fluid passage having forward and reverse flow sections and a partition having a plurality of bleed holes therein to enable fluid flow between the forward and reverse sections. The flow throttle is positioned in the system relatively far from the source of thaw heat.

Kirpich, Aaron S. (Broomall, PA)

1989-01-01T23:59:59.000Z

182

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network (OSTI)

energy efficiency goals and adopt energy conservation measures. Application of the types of compressed air best practicesEnergy Efficiency and Market Potential of Electric Motor System in China. China Machine Pressu re, [4] Best Practices

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

183

Intelligent Transportation Systems Institute University of Minnesota  

E-Print Network (OSTI)

Control simulation to complete several experiments to determine how to create a consistent traffic pattern the score, Performance Index, and ending queue length. The goal of any traffic system is to maintain a safe and Performance Index (P.I.), then answer the following questions: How to Take Screen Captures: Use the following

Minnesota, University of

184

High conversion efficiency ultraviolet fiber Raman oscillator--amplifier system  

SciTech Connect

High efficiency UV frequency conversion by stimulated Raman scattering in a XeCl (lambda = 308-nm) excimer laser-pumped multimode fiber is presented. The system consists of a first piece of fiber as a Stokes generator and a second as a power amplifier. Power conversion efficiencies up to 80% have been measured. Uses of fiber Raman amplifiers in the near UV are also discussed.

Pini, R.; Salimbeni, R.; Vannini, M.; Haider, A.F.M.Y.; Lin, C.

1986-04-01T23:59:59.000Z

185

Theory of plasma transport in toroidal confinement systems  

Science Journals Connector (OSTI)

The dissipation induced by coulomb-collisional scattering provides an irreducible minimum, and thus a useful standard for comparison, for transport processes in a hot, magnetically confined plasma. The kinetic description of this dissipation is provided by an equation of the Fokker-Planck form. As in the standard transport theory for a neutral gas, approximate solution of the Fokker-Planck equation permits the calculation of transport coefficients, which linearly relate the fluxes of particles, energy, and electric charge, to the density and temperature gradients, and to the electric field. The transport relations are useful in studying the confinement properties of present and future experimental devices for research in controlled thermonuclear fusion. The transport theory for a magnetized plasma (in which the Larmor radius is much smaller than gradient scale lengths describing the plasma fluid) departs from the theory for a neutral gas in several fundamental ways. Thus, transport coefficients for a magnetized plasma can be calculated even when the collisional mean free path is much longer than the gradient scale length (as would pertain in thermonuclear regimes). Such transport coefficients are generally nonlocal, being defined in terms of averages over surfaces with macroscopic dimensions. Furthermore, when the mean free path is long, the magnetized-plasma transport coefficients depend crucially upon the magnetic field geometry, the effects of which must be treated at the kinetic level of the Fokker-Planck equation. The results display several novel couplings between collisional dissipation and the electromagnetic field. The present review of magnetized-plasma transport theory is intended to be as widely accessible as possible. Thus the relevant features of magnetic confinement in closed (toroidal) systems, and of charged particles in spatially varying fields, are derived, at least in outline, from first principles. Although consideration is given to "classical" transport in which most field geometric effects are omitted, major emphasis is placed on the "neoclassical" theory which has been developed over the last decade. Neoclassical transport coefficients are specifically relevant to a magnetically confined plasma, rather than to just a magnetized plasma; their unusual features, such as nonlocality and geometry dependence, become particularly important in the high temperature regime of proposed thermonuclear reactors. The area of neoclassical theory which seems most complete—its application to axisymmetric tokamak-type confinement systems—is correspondingly stressed.

F. L. Hinton and R. D. Hazeltine

1976-04-01T23:59:59.000Z

186

Energy Efficiency and Environmental Impact Analyses of Supermarket Refrigeration Systems  

SciTech Connect

This paper presents energy and life cycle climate performance (LCCP) analyses of a variety of supermarket refrigeration systems to identify designs that exhibit low environmental impact and high energy efficiency. EnergyPlus was used to model refrigeration systems in a variety of climate zones across the United States. The refrigeration systems that were modeled include the traditional multiplex DX system, cascade systems with secondary loops and the transcritical CO2 system. Furthermore, a variety of refrigerants were investigated, including R-32, R-134a, R-404A, R-1234yf, R-717, and R-744. LCCP analysis was used to determine the direct and indirect carbon dioxide emissions resulting from the operation of the various refrigeration systems over their lifetimes. Our analysis revealed that high-efficiency supermarket refrigeration systems may result in up to 44% less energy consumption and 78% reduced carbon dioxide emissions compared to the baseline multiplex DX system. This is an encouraging result for legislators, policy makers and supermarket owners to select low emission, high-efficiency commercial refrigeration system designs for future retrofit and new projects.

Fricke, Brian A [ORNL] [ORNL; Bansal, Pradeep [ORNL] [ORNL; Zha, Shitong [Hillphoenix] [Hillphoenix

2013-01-01T23:59:59.000Z

187

High-efficiency solar dynamic space power generation system  

SciTech Connect

Space power technologies have undergone significant advances over the past few years, and great emphasis is being placed on the development of dynamic power systems at this time. A design study has been conducted to evaluate the applicability of a combined cycle concept-closed Brayton cycle and organic Rankine cycle coupling-for solar dynamic space power generation systems. In the concept presented in this paper (solar dynamic combined cycle), the waste heat rejected by the closed Brayton cycle working fluid is utilized to heat the organic working fluid of an organic Rankine cycle system. This allows the solar dynamic combined cycle efficiency to be increased compared to the efficiencies of two subsystems (closed Brayton cycle and organic fluid cycle). Also, for small-size space power systems (up to 50 kW), the efficiency of the solar dynamic combined cycle can be comparable with Stirling engine performance. The closed Brayton cycle and organic Rankine cycle designs are based on a great deal of maturity assessed in much previous work on terrestrial and solar dynamic power systems. This is not yet true for the Stirling cycles. The purpose of this paper is to analyze the performance of the new space power generation system (solar dynamic combined cycle). The significant benefits of the solar dynamic combined cycle concept such as efficiency increase, mass reduction, specific area-collector and radiator-reduction, are presented and discussed for a low earth orbit space station application.

Massardo, A. (Dept. di Ingegneria Energetica, Univ. di Genova, 16145 Genova (IT))

1991-08-01T23:59:59.000Z

188

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

E-Print Network (OSTI)

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 ...

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

2008-01-01T23:59:59.000Z

189

POTENTIAL IMPACT OF INTERFACIAL BONDING EFFICIENCY ON USED NUCLEAR FUEL VIBRATION INTEGRITY DURING NORMAL TRANSPORTATION  

SciTech Connect

Finite element analysis (FEA) was used to investigate the impacts of interfacial bonding efficiency at pellet pellet and pellet clad interfaces on surrogate of used nuclear fuel (UNF) vibration integrity. The FEA simulation results were also validated and benchmarked with reversible 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 include the moment carrying capacity distribution between pellets and clad and cohesion influence 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. FEA models will be further used to study UNF vibration integrity.

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

2014-01-01T23:59:59.000Z

190

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

E-Print Network (OSTI)

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

California at Berkeley, University of

191

Impact analysis of a flexible air transportation system  

E-Print Network (OSTI)

-OR), School of Architecture, Civil and Envi- ronmental Engineering (ENAC), Ecole Polytechnique F´ed´erale de)1 . Consequently, sustainability of current transportation systems is threat- ened by increased energy consumption, re- sulting in frequent congestion and delays. The trade-off between the sustainability

Bierlaire, Michel

192

Improving the efficiency of electric motor systems: Moving beyond efficient motors  

SciTech Connect

Electric motors operating in the US consume more than half of the nation's electricity. Electric utilities were among the first groups to begin offering programs to promote efficiency in electric motors. A 1994 Electric Power Research Institute (EPRI) survey of utility demand-side management (DSM) programs found 151 efficient-motors and drives programs being offered by 95 utilities in the US. The most common programs have been prescriptive rebates for the purchase of high-efficiency motors. While many of these programs have been popular and successful, their cost is an issue of contention with some industrial consumer groups and within utilities attempting to reduce program costs. With the minimum motor efficiency regulations in the Energy Policy Act of 1992 (EPAct) set to go into effect for most products in October 1997, utilities will need to move beyond these simple high-efficiency motor rebate programs if they are to continue to offer motor programs to their customers. The focus will also have to shift from simply motors to motor-system issues. As a 1993 US Department of Energy (DOE)-sponsored motor-system roundtable identified, motor-system expertise is not widely available, and many electric utilities will need assistance to develop and implement new programs. It is thus important that information be made available to these utilities on how to analyze customers' motor-systems needs, what program designs will most likely meet these needs, what resources they will need to implement their programs, and where to find those resources. DOE's Motor Challenge has already been identifying or developing many of these resources, and these are already being used by some utilities. If utilities are provided a program context, more of them can make better use of these resources and achieve success from their own standpoint (e.g., increased customer satisfaction and improved customer retention), from the customers' standpoint (e.g., lower motor-system costs and improved performance), and from the national standpoint (e.g., reduced motorsystem energy consumption and lower carbon emissions). The American Council for an Energy-Efficient Economy (ACEEE) has begun to establish this context by analyzing utility motor-systems programs. This work builds upon past ACEEE analyses of other utility DSM programs and ACEEE's extensive involvement in the technical aspects and design of programs involving electric motor systems.

Elliott, R.N.; Pye, M.; Nadel, S.

1997-07-01T23:59:59.000Z

193

Advanced Thin Film Thermoelectric Systems forEfficient Air-Conditioner...  

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

Thin Film Thermoelectric Systems forEfficient Air-Conditioners Advanced Thin Film Thermoelectric Systems forEfficient Air-Conditioners Presents recent advances in thermoelectric...

194

Radioisotope thermoelectric generator transportation system subsystem 143 software development plan  

SciTech Connect

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.

King, D.A.

1994-11-10T23:59:59.000Z

195

Experience Implementing a User Service for Archived Intelligent Transportation Systems Data. Transportation Research Record  

E-Print Network (OSTI)

and other regional partners, the Portland regional intelligent transportation systems (ITSs) data archive was recently inaugurated via a direct fiber-optic connection between ODOT and Portland State University (PSU). In July 2004, the Portland Regional Transportation Archive Listing was activated; it received 20-s data from the 436 inductive loop detectors composing the Portland area’s advanced traffic management system. PSU is designated as the region’s official data archiving entity, consistent with the ITS architecture being developed. This paper discusses the steps taken for successful implementation of the Portland region’s functional ITS data archive and plans for development and expansion. Included is a discussion of the archive structure, data storage, data processing, and user interface. An experiment involving Metro, the Portland region’s metropolitan planning organization, demonstrates that archived loop detector data can be used to improve travel demand forecasts for the Portland region. The data archive will

Robert L. Bertini; Steve Hansen; Andrew Byrd; Thareth Yin

2005-01-01T23:59:59.000Z

196

An overview of the Radioisotope Thermoelectric Generator Transportation System Program  

SciTech Connect

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.}

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

1996-03-01T23:59:59.000Z

197

Implementation and Rejection of Industrial Steam System Energy Efficiency Measures  

E-Print Network (OSTI)

Energy  Use   and  Energy  Efficiency  Improvement  Summer   Study  on  Energy  Efficiency  in  Industry.  Summer  Study  on  Energy  Efficiency  in  Industry.  

Therkelesen, Peter

2014-01-01T23:59:59.000Z

198

Transportation  

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

Transportation Transportation Transportation of Depleted Uranium Materials in Support of the Depleted Uranium Hexafluoride Conversion Program Issues associated with transport of depleted UF6 cylinders and conversion products. Conversion Plan Transportation Requirements The DOE has prepared two Environmental Impact Statements (EISs) for the proposal to build and operate depleted uranium hexafluoride (UF6) conversion facilities at its Portsmouth and Paducah gaseous diffusion plant sites, pursuant to the National Environmental Policy Act (NEPA). The proposed action calls for transporting the cylinder at ETTP to Portsmouth for conversion. The transportation of depleted UF6 cylinders and of the depleted uranium conversion products following conversion was addressed in the EISs.

199

Efficient Symbolic Detection of Global Properties in Distributed Systems  

E-Print Network (OSTI)

to total orders containing the happened­before relation. A consistent global state (CGS) of a computation cEfficient Symbolic Detection of Global Properties in Distributed Systems Scott D. Stoller a global state satisfying property \\Phi. Previous general­purpose algorithms for this problem explicitly

Stoller, Scott

200

USDA Renewable Energy Systems and Energy Efficiency Improvement Grants  

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

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


201

Maximizing efficiency of solar-powered systems by load matching  

Science Journals Connector (OSTI)

Solar power is an important source of renewable energy for many low-power systems. Matching the power consumption level with the supply level can make a great difference in the efficiency of power utilization. This paper proposes a source-tracking power ... Keywords: load matching, photovoltaics, power management, power model, solar energy, solar-aware

Dexin Li; Pai H. Chou

2004-08-01T23:59:59.000Z

202

Improving Compressed Air System Efficiency- Know What You Really Need  

E-Print Network (OSTI)

demand-side management (DSM) programs as well as their own efforts, Wisconsin Power and Light customers have been able to improve compressed air system efficiency over the past few years. One customer reduced compressed air operating costs by one third...

Terrell, R. E.

203

Energy-Efficient Resource Allocation for Multiband UWB Communication Systems  

E-Print Network (OSTI)

Energy-Efficient Resource Allocation for Multiband UWB Communication Systems W. Pam Siriwongpairat of power consumption under the constraints on the packet error rate, transmission rate, and FCC regulations promises to satisfy the growing demand for low cost and high-speed digital wireless home networks

Liu, K. J. Ray

204

High efficiency pool filtering systems utilising variable frequency drives  

Science Journals Connector (OSTI)

Over 1 year, private swimming pools in Australia will typically consume 1680 GWh of electricity, producing 2130 kt of CO2. Redesigning a pool's filtration system and using it more efficiently can reduce the energy use, and hence the CO2 production, by a significant amount. This paper describes experimental measurements carried out on a new design of pool pump system. Initial experiments using a variable frequency drive (VFD) with a standard, single phase pump/motor system have achieved energy savings of 40%. Utilising a VFD and a three phase pump/motor energy savings of 61% have been achieved, without degrading the system performance.

Z. Hameiri; T. Spooner; A.B. Sproul

2009-01-01T23:59:59.000Z

205

Efficiency Analysis of Natural Gas Residential Micro-cogeneration Systems  

Science Journals Connector (OSTI)

The systems feature different energy conversion technologies: Stirling engine (WhisperGen), spark-ignition internal combustion (IC) engine (FreeWatt), and polymer electrolyte fuel cell (PEFC) (EBARA Ballard). ... The Stirling engine is the least expensive that requires the least maintenance. ... Experimental Determination of the Efficiency and Emissions of a Residential Microcogeneration System Based on a Stirling Engine and Fueled by Diesel and Ethanol ...

Amir A. Aliabadi; Murray J. Thomson; James S. Wallace

2010-01-22T23:59:59.000Z

206

System Effects of High Efficiency Filters in Homes  

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

System Effects of High Efficiency Filters in Homes System Effects of High Efficiency Filters in Homes Title System Effects of High Efficiency Filters in Homes Publication Type Conference Paper LBNL Report Number LBNL-6144E Year of Publication 2013 Authors Walker, Iain S., Darryl J. Dickerhoff, David Faulkner, and William J. N. Turner Conference Name ASHRAE Annual Conference Date Published 03/2013 Abstract Occupant concern about indoor air quality (IAQ) issues has led to the increased use of more effective air filters in residential heating and cooling systems. A drawback of improved filtration is that better filters tend to have more flow resistance. This can lead to lower system airflows that reduce heat exchanger efficiency, increase duct pressure that leads to increased air leakage for ducts and, in some case s, increased blower power consumption. There is currently little knowledge on the magnitude of these effects. In this study, the performance of ten central forced air systems was monitored for a year. The systems used either a Permanent Split Capacitor (PSC) or a Brushless Permanent Magnet (BPM) blower. Each system was operated with a range of filter efficiencies ranging from MERV 6 (the lowest currently permitted in ASHRAE Standard 62.2) up to MERV 16. Measurements were recorded every ten seconds for blower power, filter pressure drop, supply and return plenum pressures together with plenum and indoor temperatures. These detailed continuous measurements allowed observation of filter loading effects as well as the initial change in system performance when filters were swapped. The results of the field measurements were used in simulations to examine more general system performance effects for a wider range of climates. The field tests showed that system static pressures were highly influenced by filter selection, filter loading rates varied more from house to house than by MERV rating and overall were quite low in many of the homes. PSC motors showed reduced power and airflow as the filters loaded, but BPM motors attempted to maintain a constant airflow and increased their power to do so. The combined field test and simulation results from this study indicate that for MERV 10-13 filters the effects on energy use are small (5%) and usability. In systems using low MERV filters that are already close to blower performance limits the addition of a MERV 16 filter pushed the blowers to their performance limits.

207

Transportation  

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

Health Risks » Transportation Health Risks » Transportation DUF6 Health Risks line line Accidents Storage Conversion Manufacturing Disposal Transportation Transportation A discussion of health risks associated with transport of depleted UF6. Transport Regulations and Requirements In the future, it is likely that depleted uranium hexafluoride cylinders will be transported to a conversion facility. For example, it is currently anticipated that the cylinders at the ETTP Site in Oak Ridge, TN, will be transported to the Portsmouth Site, OH, for conversion. Uranium hexafluoride has been shipped safely in the United States for over 40 years by both truck and rail. Shipments of depleted UF6 would be made in accordance with all applicable transportation regulations. Shipment of depleted UF6 is regulated by the

208

Motor Systems Efficiency Supply Curves | Open Energy Information  

Open Energy Info (EERE)

Motor Systems Efficiency Supply Curves Motor Systems Efficiency Supply Curves Jump to: navigation, search Tool Summary Name: Motor Systems Efficiency Supply Curves Agency/Company /Organization: United Nations Industrial Development Organization Sector: Energy Focus Area: Energy Efficiency, Industry Topics: Technology characterizations Resource Type: Publications, Case studies/examples Website: www.unido.org/fileadmin/user_media/Services/Energy_and_Climate_Change/ Country: United States, Canada, Thailand, Vietnam, Brazil UN Region: South-Eastern Asia, "Latin America and Caribbean" is not in the list of possible values (Eastern Africa, Middle Africa, Northern Africa, Southern Africa, Western Africa, Caribbean, Central America, South America, Northern America, Central Asia, Eastern Asia, Southern Asia, South-Eastern Asia, Western Asia, Eastern Europe, Northern Europe, Southern Europe, Western Europe, Australia and New Zealand, Melanesia, Micronesia, Polynesia, Latin America and the Caribbean) for this property., Northern America, "Western & Eastern Europe" is not in the list of possible values (Eastern Africa, Middle Africa, Northern Africa, Southern Africa, Western Africa, Caribbean, Central America, South America, Northern America, Central Asia, Eastern Asia, Southern Asia, South-Eastern Asia, Western Asia, Eastern Europe, Northern Europe, Southern Europe, Western Europe, Australia and New Zealand, Melanesia, Micronesia, Polynesia, Latin America and the Caribbean) for this property.

209

Increase energy efficiency in systems and buildings and improve indoor  

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

Increase energy efficiency in systems and buildings and improve indoor Increase energy efficiency in systems and buildings and improve indoor environment: How to validate comfort and energy reduction Speaker(s): Wouter Borsboom Date: December 8, 2009 - 12:00pm Location: 90-3122 TNO is a research institute which is active in the energy saving and indoor environment. We like to present our research, our goals and discuss the challenges and the opportunities for cooperation. Therefore we like to give a presentation about the following topic and we are also interested in a presentation of LBL and UC Berkeley. An important topic in the building industry is near zero energy buildings. Most countries in Europe implemented programs to advance this goal in one way or another. In near-zero energy buildings, the interaction between building and systems

210

Index to Evaluate Energy Efficiency of the Building HVAC System  

E-Print Network (OSTI)

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..., Beijing, China, September 14-17, 2014 3• Why we need the Energy/Load Ratio 1. Building 2. HVAC Systems 3. Common Index • Building sector consumes 40% of total energy usage in US (Residential buildings – 22%, Commercial building – 19%) • HVAC systems...

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

2014-01-01T23:59:59.000Z

211

Cost Analysis of Fuel Cell Systems for Transportation  

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

Fuel Cell 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, Massachusetts 02140-2390 Ref D0006 SFAA No. DE-SCO2- 98EE50526 Topic 1 Subtopic 1C Agenda EC_2004 10 20 FC Tech Team Presentation 1 1 Project Overview 2 Compressed Hydrogen Storage Cost 3 2004 System Cost Update 4 Appendix Project Overview Approach EC_2004 10 20 FC Tech Team Presentation 2 In our final year of the project, we assessed the cost of compressed hydrogen storage and updated the overall system cost projection. Task 1: PEMFC System Technology Synopsis Task 2: Develop Cost Model and Baseline Estimates Task 3: Identify Opportunities for System Cost Reduction Tasks 4, 5, 6 & 7: Annual Updates

212

Energy-Efficient Building HVAC Control Using Hybrid System LBMPC  

E-Print Network (OSTI)

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...

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

2012-01-01T23:59:59.000Z

213

Optimal Efficiency of a Solar Pond and a Rankine Cycle System  

Science Journals Connector (OSTI)

The optimal efficiency of a solar pond — Rankine cycle system is found analytically. The optimum for...

M. H. Cobble; A. R. Shouman

1987-01-01T23:59:59.000Z

214

Biological optimization systems for enhancing photosynthetic efficiency and methods of use  

DOE Patents (OSTI)

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

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

2014-02-25T23:59:59.000Z

215

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

SciTech Connect

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.

Johnson, PE

2003-09-18T23:59:59.000Z

216

CLASSIFICATION OF THE MGR SUBSURFACE DEVELOPMENT TRANSPORTATION SYSTEM  

SciTech Connect

The purpose of this analysis is to document the Quality Assurance (QA) classification of the Monitored Geologic Repository (MGR) subsurface development transportation structures, systems and components (SSCs) performed by the MGR Safety Assurance Department. This analysis also provides the basis for revision of YMP/90-55Q, Q-List (YMP 1998). The Q-List identifies those MGR SSCs subject to the requirements of DOE/RW-0333P7 ''Quality Assurance Requirements and Description'' (QARD) (DOE 1998).

R. Garrett

1999-08-31T23:59:59.000Z

217

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

SciTech Connect

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.

Eric J. Carlson

2004-10-20T23:59:59.000Z

218

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

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

Work on optimizing electrical and thermal transport properties of n-type skutterudites via a multiple-element-void-filling approach is presented.

219

The importance of transport parameter cross correlations in natural systems radioactive transport models  

SciTech Connect

Transport parameter cross correlations are rarely considered in models used to predict radionuclide transport in natural systems. In this paper, it is shown that parameter cross correlations could have a significant impact on radionuclide transport predictions in saturated media. In fractured rock, the positive correlation between fracture apertures and groundwater residence times is shown to result in significantly less retardation due to matrix diffusion than is predicted without the correlation. The suppression of matrix diffusion is further amplified by a tendency toward larger apertures, smaller matrix diffusion coefficients, and less sorption capacity in rocks of lower matrix porosity. In a hypothetical example, strong cross correlations between these parameters result in a decrease in predicted radionuclide travel times of an order of magnitude or more relative to travel times calculated with uncorrelated parameters. In porous media, expected correlations between permeability, porosity, and sorption capacity also result in shorter predicted travel times than when the parameters are assumed to be uncorrelated. Individual parameter standard deviations can also have a significant influence on predicted radionuclide travel times, particularly when cross correlations are considered.

Reimus, Paul W [Los Alamos National Laboratory

2011-01-03T23:59:59.000Z

220

Optimizing the National TRU waste system transportation program.  

SciTech Connect

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.

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

2002-01-01T23:59:59.000Z

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


221

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

E-Print Network (OSTI)

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

Bertini, Robert L.

222

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

E-Print Network (OSTI)

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

Bertini, Robert L.

223

Feed gas contaminant control in ion transport membrane systems  

DOE Patents (OSTI)

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.

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

2009-07-07T23:59:59.000Z

224

Field-dependent transport properties in paramagnon systems  

SciTech Connect

We examine, theoretically, the low-field dependence of certain transport properties in nearly magnetic itinerant-fermion systems which exhibit strong spin fluctuations describable by the paramagnon theory. We study more precisely the viscosity eta(H) of partially polarized normal liquid /sup 3/He at low field H and low temperature, and also the magnetoconductivity sigma(H) of exchange-enhanced metals. We find analytical expressions relating these transport properties to the field dependence of the magnetization M = chi(H)H. We find that eta(H) and sigma(H) increase or decrease when H increases, depending upon whether chi(H) becomes smaller or larger than chi(0). Comparison of our results with up-to-date experiments for eta(H) in liquid /sup 3/He is quite satisfactory as far as the sign and magnitude of the effect are concerned.

Beal-Monod, M.T.

1988-11-01T23:59:59.000Z

225

Integration of High Efficiency Solar Cells on Carriers for Concentrating System Applications .  

E-Print Network (OSTI)

??High efficiency multi-junction (MJ) solar cells were packaged onto receiver systems. The efficiency change of concentrator cells under continuous high intensity illumination was done. Also,… (more)

Chow, Simon Ka Ming

2011-01-01T23:59:59.000Z

226

NREL: Transportation Research - Alternative Fuels Characterization  

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

compatibility with engines and emission control systems. Highly efficient heavy-duty diesel truck engines are the primary power source for global transportation of freight....

227

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

E-Print Network (OSTI)

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

Shi, Weisong

228

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

SciTech Connect

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.

Greene, D.L.

1997-07-01T23:59:59.000Z

229

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

E-Print Network (OSTI)

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

Paris-Sud XI, Université de

230

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

E-Print Network (OSTI)

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 ...

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

2007-01-01T23:59:59.000Z

231

Developing Energy Efficient Roof Systems DEERS | Open Energy Information  

Open Energy Info (EERE)

Roof Systems DEERS Roof Systems DEERS Jump to: navigation, search Name Developing Energy Efficient Roof Systems (DEERS) Place Ripon, California Zip 95366 Sector Solar Product Developer of roof top solar PV projects. Coordinates 43.84582°, -88.837054° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.84582,"lon":-88.837054,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

232

Improving the energy efficiency of sparse linear system solvers on multicore and manycore systems  

Science Journals Connector (OSTI)

...impacting their performance. high performance computing|energy efficiency|sparse...about the energy draw by high performance computing (HPC) facilities, the...new metric for ranking high performance computing systems. Sandia report...

2014-01-01T23:59:59.000Z

233

Multicomponent Transport of Sulfate in a Goethite-Silica Sand System  

E-Print Network (OSTI)

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

Sparks, Donald L.

234

Proper design hikes gas-lift system efficiency  

SciTech Connect

Proper design of gas-lift pumping systems, used for pumping corrosive or erosive fluids, involves the correct selection of submergence ratio, flow regime, pipe diameter, and physical properties of the fluid. Correlations for maximum lifting efficiency on a friction-free basis vs. submergence ratio have been developed based on experimental data. The Oshinowo and Charles flow map for vertical upward flow has been chosen for determining the two-phase flow regimes. For large-diameter gas-lifting systems, the effects of fluid physical properties on the maximum lifting efficiency become diminished. Gas-lift pumping systems are widely used in the process industry as well as in oil and gas production. In an ethylene dichloride/vinyl chloride monomer (EDC/VCM) plant, quench column bottoms are recirculated back to the column by gas lift of the EDC/VCM stream from the EDC pyrolysis furnace. Gas lift is utilized instead of pumps to alleviate the plugging and erosion problems caused by the presence of coke/tar particulates. Other process applications include those where pumps suffer severe corrosion from the fluids pumped.

Tsai, T.C.

1986-06-30T23:59:59.000Z

235

Energy Department Announces $17 Million to Advance Efficient, Environmentally-Friendly Highway Transportation Technologies  

Office of Energy Efficiency and Renewable Energy (EERE)

The Energy Department announced today $17.6 million for 14 cooperative agreements with small businesses and institutions of higher education to develop and deploy efficient and environmentally...

236

How to produce a representation of fraud in urban transportation? Between knowledge for the system and knowledge about the system  

E-Print Network (OSTI)

1 How to produce a representation of fraud in urban transportation? Between knowledge simultaneously to a research work about fraud by a transportation system, and to a management research tradition a representation of fraud on the network of a bus public transportation system of the Parisian suburb. The relation

Paris-Sud XI, Université de

237

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

E-Print Network (OSTI)

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

Gummadi, Ramakrishna

238

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

239

Transportation in Shanghai: A Decision Support System to Move towards Sustainability.  

E-Print Network (OSTI)

??An excellent transportation system is integral for Shanghai as it aims for sustainable development. Decision-making has a far-reaching impact on transportation, which should be improved… (more)

Quchen, Xu; Yanping, Zhuang

2010-01-01T23:59:59.000Z

240

Modeling the global freight transportation system: a multi-level modeling perspective  

Science Journals Connector (OSTI)

The interconnectedness of different actors in the global freight transportation industry has rendered such a system as a large complex system where different sub-systems are interrelated. On such a system, policy-related- exploratory analyses which have ...

Ronald Apriliyanto Halim; Lorant A. Tavasszy; Mamadou D. Seck

2012-12-01T23:59:59.000Z

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


241

Innovative System and Method for Monitoring Energy Efficiency in Buildings  

Science Journals Connector (OSTI)

Improving energy efficiency (EE) in buildings may significantly reduce...@lisee, for achieving energy efficiency in buildings (households, officies, campus, data centers, etc. ... devices, locally estimating indo...

Grazia Fattoruso; Saverio De Vito; Ciro Di Palma; Girolamo Di Francia

2014-01-01T23:59:59.000Z

242

Transportation  

Science Journals Connector (OSTI)

The romantic rides in Sandburg’s “eagle-car” changed society. On the one hand, motor vehicle transportation is an integral thread of society’s fabric. On the other hand, excess mobility fractures old neighborh...

David Hafemeister

2014-01-01T23:59:59.000Z

243

SunShot Initiative: High-Efficiency Thermal Energy Storage System for CSP  

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

High-Efficiency Thermal Energy High-Efficiency Thermal Energy Storage System for CSP to someone by E-mail Share SunShot Initiative: High-Efficiency Thermal Energy Storage System for CSP on Facebook Tweet about SunShot Initiative: High-Efficiency Thermal Energy Storage System for CSP on Twitter Bookmark SunShot Initiative: High-Efficiency Thermal Energy Storage System for CSP on Google Bookmark SunShot Initiative: High-Efficiency Thermal Energy Storage System for CSP on Delicious Rank SunShot Initiative: High-Efficiency Thermal Energy Storage System for CSP on Digg Find More places to share SunShot Initiative: High-Efficiency Thermal Energy Storage System for CSP on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act

244

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

SciTech Connect

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.

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

2010-11-01T23:59:59.000Z

245

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

SciTech Connect

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.

Satoh, J.A.

1994-11-09T23:59:59.000Z

246

DOE/BES Workshop on Clean and Efficient Combustion of 21st Century Transportation Fuels  

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

Presentation given at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007). 13-16 August, 2007, Detroit, Michigan. Sponsored by the U.S. Department of Energy's (DOE) Office of FreedomCAR and Vehicle Technologies (OFCVT).

247

Differentiated Quality of Protection to Improve Energy Efficiency of Survivable Optical Transport Networks  

Science Journals Connector (OSTI)

A differentiated quality of protection scheme is evaluated in terms of energy efficiency for fixed-grid WDM and flexible-grid OFDM-based networks. Significant energy savings can be...

Lopez Vizcaino, Jorge; Ye, Yabin; Lopez, Victor; Jimenez, Felipe; Duque, Raul; Musumeci, Francesco; Pattavina, Achille; Krummrich, Peter

248

Energy Efficiency Labeling System & its Development in China  

Office of Energy Efficiency and Renewable Energy (EERE)

Information about the regulations, formats, objectives, and implementation of energy efficiency labeling in China.

249

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

E-Print Network (OSTI)

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

Qin, Xiao

250

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

251

Transportation System Risk Assessment (TSRA) bounding release model  

SciTech Connect

Transportation System Risk Assessments (TSRAs) document the compliance of proposed shipments of nuclear components with applicable federal regulations as well as the associated risks involved. If a relatively simple bounding analysis can show that the consequences resulting from a worst case scenario are acceptably low, a more time intensive and costly risk analysis can be avoided. Therefore, a bounding release FORTRAN model has been developed to determine the consequences of a worst case non-criticality transportation accident. The consequences of three conservative bounding accidents are determined by the model: (1) direct radiation exposure, (2) airborne release of radiological and/or hazardous solid material, and (3) release of radiological and/or hazardous solid material into a waterway and subsequent uptake by an individual through drinking water. Program output includes the direct radiation exposure (mrem), maximum downwind concentration (mg/m{sup 3}), radiation dose (mrem) received as a result of the postulated airborne release of radiological material, intake (mg) due to inhalation, radiation dose (mrem) received by an individual resulting from a release of radiological material into a waterway and uptake into drinking water, and uptake (mg) due to ingestion. This report documents the methodologies and correlations used in the numerical model to perform the bounding consequence calculations.

Anderson, J.C.

1997-10-01T23:59:59.000Z

252

Memory Effects in Nonequilibrium Transport for Deterministic Hamiltonian Systems  

E-Print Network (OSTI)

We consider nonequilibrium transport in a simple chain of identical mechanical cells in which particles move around. In each cell, there is a rotating disc, with which these particles interact, and this is the only interaction in the model. It was shown in \\cite{eckmann-young} that when the cells are weakly coupled, to a good approximation, the jump rates of particles and the energy-exchange rates from cell to cell follow linear profiles. Here, we refine that study by analyzing higher-order effects which are induced by the presence of external gradients for situations in which memory effects, typical of Hamiltonian dynamics, cannot be neglected. For the steady state we propose a set of balance equations for the particle number and energy in terms of the reflection probabilities of the cell and solve it phenomenologically. Using this approximate theory we explain how these asymmetries affect various aspects of heat and particle transport in systems of the general type described above and obtain in the infinite volume limit the deviation from the theory in \\cite{eckmann-young} to first-order. We verify our assumptions with extensive numerical simulations.

Jean-Pierre Eckmann; Carlos Mejia-Monasterio; Emmanuel Zabey

2005-10-26T23:59:59.000Z

253

Improved power efficiency in blue phosphorescent organic light-emitting diodes using diphenylmethyl linkage based high triplet energy hole transport materials  

Science Journals Connector (OSTI)

Improved power efficiency in blue phosphorescent organic light-emitting diodes (PHOLEDs) was demonstrated by using new high triplet energy hole-transport materials based on the diphenylmethyl linkage. Two high triplet energy hole-transport materials with diphenylamine or ditolyamine moieties linked through a diphenylmethyl linkage, 4,4?-(diphenylmethylene)bis(N,N-diphenylaniline) (TCBPA) and 4,4?-(diphenylmethylene)bis(N,N-di-p-tolylaniline), were synthesized and evaluated as hole-transport materials for blue PHOLEDs. The power efficiency of TCBPA was superior to that of standard 1,1-bis[4-[N,N?-di(p-tolyl)amino]phenyl]cyclohexane.

Chil Won Lee; Jun Yeob Lee

2013-01-01T23:59:59.000Z

254

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

SciTech Connect

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)

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

255

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...

256

IMPACTS OF REFRIGERANTLINE LENGTH ON SYSTEM EFFICIENCY IN RESIDENTIAL HEATING AND COOLING SYSTEMS USING REFRIGERANT DISTRIBUTION.  

SciTech Connect

The effects on system efficiency of excess refrigerant line length are calculated for an idealized residential heating and cooling system. By excess line length is meant refrigerant tubing in excess of the 25 R provided for in standard equipment efficiency test methods. The purpose of the calculation is to provide input for a proposed method for evaluating refrigerant distribution system efficiency. A refrigerant distribution system uses refrigerant (instead of ducts or pipes) to carry heat and/or cooling effect from the equipment to the spaces in the building in which it is used. Such systems would include so-called mini-splits as well as more conventional split systems that for one reason or another have the indoor and outdoor coils separated by more than 25 ft. This report performs first-order calculations of the effects on system efficiency, in both the heating and cooling modes, of pressure drops within the refrigerant lines and of heat transfer between the refrigerant lines and the space surrounding them.

ANDREWS, J.W.

2001-04-01T23:59:59.000Z

257

Reactive transport model for the ambient unsaturated hydrogeochemical system at Yucca mountain, Nevada  

Science Journals Connector (OSTI)

To assist a technical review of a potential application for a geologic repository, a reactive transport model is presented for the ambient hydrogeochemical system at Yucca Mountain (YM). The model simulates two-phase, nonisothermal, advective and diffusive ... Keywords: Yucca mountain, geochemistry, groundwater chemistry, groundwater flow and transport, hydrology, reactive transport model, unsaturated zone

Lauren Browning; William M. Murphy; Chandrika Manepally; Randall Fedors

2003-04-01T23:59:59.000Z

258

Ionic transport in nanocapillary membrane systems Vikhram V. Swaminathan Larry R. Gibson II  

E-Print Network (OSTI)

. Keywords Membranes Á Nanostructures Á Nanofluidics Á Microfluidics Á Ion transport Á Electrokinetics Á lREVIEW Ionic transport in nanocapillary membrane systems Vikhram V. Swaminathan · Larry R. Gibson / Accepted: 23 May 2012 � Springer Science+Business Media B.V. 2012 Abstract Species transport

259

Design and scenario assessment for collaborative logistics and freight transport systems  

E-Print Network (OSTI)

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

Paris-Sud XI, Université de

260

Facilitated transport membrane hybrid systems for olefin purification  

SciTech Connect

A new membrane system has been developed by BP for refinery and chemical plant olefin purification and recovery. This facilitated transport system, coupled with distillation, offers lower capital and operating costs than conventional distillation alone. Initial results on lab scale hollow fiber devices indicate membrane flux ranging from 8.75 {times} 10{sup {minus}6} to 8 {times} 10{sup {minus}5} m{sup 3}/m{sup 2}/sec (2.5 to 23 scfd/ft{sub 2}) and selectivities from 150 to 300. Pilot plant experiments on propylene/propane and ethylene purge gas recovery over three to six months duration show membrane stability and product purity of 98.5% or greater using refinery grade propylene feed. Hybrid system optimization data for membranes and distillation indicate that using a side draw from the distillation tower provides advantages in terms of membrane area, purity of feed to the membrane, and low per-pass recovery coupled with high overall propylene recovery. Membrane performance data under various conditions are also presented. In addition to performance data, economic evaluation and energy savings are discussed.

Davis, J.C.; Valus, R.J.; Eshraghi, R.; Velikoff, A.E. [BP Research, Cleveland, OH (United States)

1993-01-01T23:59:59.000Z

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


261

Measurements of Conversion Efficiency for a Flat Plate Thermophotovoltaic System Using a Photonic Cavity Test System  

SciTech Connect

The performance of a 1 cm{sup 2} thermophotovoltaic (TPV) module was recently measured in a photonic cavity test system. A conversion efficiency of 11.7% was measured at a radiator temperature of 1076 C and a module temperature of 29.9 C. This experiment achieved the highest direct measurement of efficiency for an integrated TPV system. Efficiency was calculated from the ratio of the peak (load matched) electrical power output and the heat absorption rate. Measurements of these two parameters were made simultaneously to assure the validity of the measured efficiency value. This test was conducted in a photonic cavity which mimicked a typical flat-plate TPV system. The radiator was a large, flat graphite surface. The module was affixed to the top of a copper pedestal for heat absorption measurements. The heat absorption rate was proportional to the axial temperature gradient in the pedestal under steady-state conditions. The test was run in a vacuum to eliminate conductive and convective heat transfer mechanisms. The photonic cavity provides the optimal test environment for TPV efficiency measurements because it incorporates all important physical phenomena found in an integrated TPV system: high radiator emissivity and blackbody spectral shape, photon recycling, Lambertian distribution of incident radiation and complex geometric effects. Furthermore, the large aspect ratio between radiating surface area and radiator/module spacing produces a view factor approaching unity with minimal photon leakage.

E.J. Brown; C.T. Ballinger; S.R. Burger; G.W. Charache; L.R. Danielson; D.M. DePoy; T.J. Donovan; M. LoCascio

2000-05-30T23:59:59.000Z

262

E-Print Network 3.0 - advanced rural transportation systems Sample...  

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

of rural populations and less developed transportation networks results in fewer health care... ). These rural-urban differences in health system ... Source: Lopez-Carr, David -...

263

ATP-binding cassette transporters are required for efficient RNA interference in Caenorhabditis elegans  

E-Print Network (OSTI)

that facilitate RNAi have been identified, current descriptions of RNAi and interrelated mechanisms are far from complete. Here, we report that the Caenorhabditis elegans gene haf-6 is required for efficient RNAi. HAF-6 is a member of the ATP-binding cassette (ABC...

Timmons, Lisa; Hull, Dawn; Han, Wang; Echalier, B.; Sundaram, P.

2006-08-01T23:59:59.000Z

264

PHYSICAL REVIEW B 88, 085426 (2013) Nonlinear thermoelectric transport: A class of nanodevices for high efficiency  

E-Print Network (OSTI)

I. INTRODUCTION Thermoelectric materials1 can convert unused waste heat to electricity (Seebeck effect) or use electricity for refrigeration (Peltier effect). A good thermoelectric material needs charge. As a result it has not yet been possible to find bulk thermoelectric materials efficient enough

Muttalib, Khandker

265

Energy Efficiency Evaluation of Guangzhou West Tower Façade System  

E-Print Network (OSTI)

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...

Meng, Q.; Zhang, L.

2006-01-01T23:59:59.000Z

266

Emergy Synthesis and Its Application on Water Efficiency of Water Ecological-Economic System  

Science Journals Connector (OSTI)

Water ecological-economic system (WEES) is a coupling system of traditional water resource system (WS) and eco-environment, social economy system. Water efficiency is an important index and comprehensively reflec...

Cuimei Lv; Minhua Ling

2011-01-01T23:59:59.000Z

267

Efficient Pinpointing of Misplaced Tags in Large RFID Systems  

E-Print Network (OSTI)

-consuming to collect (and energy-consuming if active tags are used). How to efficiently address the MTP problem from partial tags in favor of energy saving. We analyze the optimal performances of proposed protocols the time efficiency and the energy efficiency by over 70% on average when compared with the state

Chen, Shigang

268

Backbone-induced effects in the charge transport efficiency of synthetic DNA  

Science Journals Connector (OSTI)

We report on a theoretical study pointing out the fundamental role of the backbone energetics in the charge transfer efficiency of polyG–polyC and polyA–polyT chains. The double-strand DNA (ds-DNA) molecules are modelled in terms of a single channel effective Hamiltonian. By introducing a two-step renormalization scheme analytical results for the energy spectrum and transmission coefficient are derived, and current–voltage characteristics are numerically investigated. Significant modulations of the main I–V features (voltage threshold, current amplitude) are reported and their physical origin is traced back to backbone-induced electronic effects. These results open new perspectives for experimental work aimed at controlling the charge transfer efficiency in nanodevices based on synthetic DNA.

Enrique Maciá; Stephan Roche

2006-01-01T23:59:59.000Z

269

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

E-Print Network (OSTI)

Energy Efficiency Analysis of MISO-OFDM Communication Systems Considering Power and Capacity subchannel capacity threshold. Moreover, the energy efficiency of MISO-OFDM communication systems starts-input single-output (MISO) . orthogonal frequency division multiplexing (OFDM) . energy efficiency. capacity

Wang, Cheng-Xiang

270

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

E-Print Network (OSTI)

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

Fernández de Córdoba, Pedro

271

An Efficient Energy Management System for Android Phone Using Bayesian Networks  

E-Print Network (OSTI)

. They changed the quality of multimedia content according to the context for energy efficiency [8]. Simunic etAn 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

Cho, Sung-Bae

272

Transportation system benefits of early deployment of a 75-ton multipurpose canister system  

SciTech Connect

In 1993 the US Civilian Radioactive Waste Management System (CRWMS) began developing two multipurpose canister (MPC) systems to provide a standardized method for interim storage and transportation of spent nuclear fuel (SNF) at commercial nuclear power plants. One is a 75-ton concept with an estimated payload of about 6 metric tons (t) of SNF, and the other is a 125-ton concept with an estimated payload of nearly 11 t of SNF. These payloads are two to three times the payloads of the largest currently certified US rail transport casks, the IF-300. Although is it recognized that a fully developed 125-ton MPC system is likely to provide a greater cost benefit, and radiation exposure benefit than the lower-capacity 75-ton MPC, the authors of this paper suggest that development and deployment of the 75-ton MPC prior to developing and deploying a 125-ton MPC is a desirable strategy. Reasons that support this are discussed in this paper.

Wankerl, M.W. [Oak Ridge National Lab., TN (United States); Schmid, S.P. [Science Applications International Corp., Oak Ridge, TN (United States)

1995-12-31T23:59:59.000Z

273

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

SciTech Connect

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.

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

1986-12-01T23:59:59.000Z

274

Fuels Performance Group: Center for Transportation Technologies and Systems  

SciTech Connect

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

Not Available

2008-08-01T23:59:59.000Z

275

GIZ Sourcebook Module 4e: Intelligent Transport Systems | Open...  

Open Energy Info (EERE)

management of traffic flow have been developing at a rapid pace for vehicles, buses, trains, and for the management of large public transport networks. Collectively, the various...

276

Investing in Sustainable Transport and Urban Systems: The GEF...  

Open Energy Info (EERE)

expand clean public transportation choices that also have the added benefits of lowering air pollution and reducing traffic congestion. LEDSGP green logo.png This tool is included...

277

An electrochemical system for efficiently harvesting low-grade heat energy  

E-Print Network (OSTI)

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 ...

Lee, Seok Woo

278

Transportation Market Distortions  

E-Print Network (OSTI)

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

Litman, Todd

2006-01-01T23:59:59.000Z

279

Energy Efficient TWDM Multi-PON System With Wavelength Relocation  

Science Journals Connector (OSTI)

Power consumption in current communication networks including the access networks is increasing rapidly; energy efficiency is therefore one of the key design considerations in the next...

Yang, Hongyang; Sun, Weiqiang; Li, Jun; Hu, Weisheng

2014-01-01T23:59:59.000Z

280

Efficient Thermally Variable Cooling System | Department of Energy  

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

Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. p-07fulton.pdf More Documents & Publications CX-003867:...

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


281

Wood Transportation Systems-A Spin-Off of a Computerized Information  

E-Print Network (OSTI)

Wood Transportation Systems-A Spin-Off of a Computerized Information and Mapping Technique William of the system to determine the allocation and association of wood sources and markets. INTRODUCTION In December strategies of wood origins and potential markets to be correlated very accurately and rapidly. Transportation

Standiford, Richard B.

282

THE STRONGLY CONFINED SCHRDINGER-POISSON SYSTEM FOR THE TRANSPORT OF ELECTRONS IN A NANOWIRE  

E-Print Network (OSTI)

THE STRONGLY CONFINED SCHR�DINGER-POISSON SYSTEM FOR THE TRANSPORT OF ELECTRONS IN A NANOWIRE of the three-dimensional Schrödinger-Poisson system with a singular perturbation, to model a quantum electron in the nanoelectronic industry and the functioning of many electronic devices is based on the transport of charged

Boyer, Edmond

283

Accessibility for people who are blind in public transportation systems  

Science Journals Connector (OSTI)

In order to support access for people who are blind to modes of transportation in the city, it is necessary to design technological tools that allow them to carry out activities safely, autonomously, and functionally. In this context, three mobile orientation ... Keywords: accessibility, blind people, mobility, transportation in the city

Jaime Sánchez; Marcia de Borba Campos; Matías Espinoza; Lotfi B. Merabet

2013-09-01T23:59:59.000Z

284

Expansion joint for guideway for magnetic levitation transportation system  

DOE Patents (OSTI)

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.

Rossing, T.D.

1993-02-09T23:59:59.000Z

285

Expansion joint for guideway for magnetic levitation transportation system  

DOE Patents (OSTI)

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.

Rossing, Thomas D. (DeKalb, IL)

1993-01-01T23:59:59.000Z

286

Study on Energy Efficiency Evaluation Method of Cooling Water System of Surface Water Source Heat Pump  

Science Journals Connector (OSTI)

Water source heat pump system is a green air-conditioning system which has high efficiency, energy saving, and environmental protection, but inappropriate design of the system type of water intake will impact on ...

Jibo Long; Siyi Huang

2014-01-01T23:59:59.000Z

287

The Airborne Cloud–Aerosol Transport System: Overview and Description of the Instrument and Retrieval Algorithms  

Science Journals Connector (OSTI)

The Airborne Cloud–Aerosol Transport System (ACATS) is a Doppler wind lidar system that has recently been developed for atmospheric science capabilities at the NASA Goddard Space Flight Center (GSFC). ACATS is also a high-spectral-resolution lidar ...

John E. Yorks; Matthew J. McGill; V. Stanley Scott; Shane W. Wake; Andrew Kupchock; Dennis L. Hlavka; William D. Hart; Patrick A. Selmer

2014-11-01T23:59:59.000Z

288

Vehicle routing and scheduling for the ultra short haul transportation system  

E-Print Network (OSTI)

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 ...

Smith, Barry C.

1979-01-01T23:59:59.000Z

289

Sustainable Transportation Decision-Making: Spatial Decision Support Systems (SDSS) and Total Cost Analysis  

E-Print Network (OSTI)

is to develop a Spatial Decision Support System (SDSS) that will lead to more balanced decision-making in transportation investment and optimize the most sustainable high-speed rail (HSR) route. The decision support system developed here explicitly elaborates...

Kim, Hwan Yong

2013-04-04T23:59:59.000Z

290

Efficient Misplaced-Tag Pinpointing in Large RFID Systems  

E-Print Network (OSTI)

-processing perspective, collects and processes a large amount of data. It suffers from time inefficiency (and energy tags, we further propose a solution requiring responses from only a subset of tags in favor of energy can significantly increase the time efficiency and the energy efficiency by over 70 percent on average

Xiao, Bin

291

Transportation  

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

Due to limited parking, all visitors are strongly encouraged to: Due to limited parking, all visitors are strongly encouraged to: 1) car-pool, 2) take the Lab's special conference shuttle service, or 3) take the regular off-site shuttle. If you choose to use the regular off-site shuttle bus, you will need an authorized bus pass, which can be obtained by contacting Eric Essman in advance. Transportation & Visitor Information Location and Directions to the Lab: Lawrence Berkeley National Laboratory is located in Berkeley, on the hillside directly above the campus of University of California at Berkeley. The address is One Cyclotron Road, Berkeley, California 94720. For comprehensive directions to the lab, please refer to: http://www.lbl.gov/Workplace/Transportation.html Maps and Parking Information: On Thursday and Friday, a limited number (15) of barricaded reserved parking spaces will be available for NON-LBNL Staff SNAP Collaboration Meeting participants in parking lot K1, in front of building 54 (cafeteria). On Saturday, plenty of parking spaces will be available everywhere, as it is a non-work day.

292

Efficient sensitivity analysis for flow and transport in the Earth's crust and mantle  

Science Journals Connector (OSTI)

......1985. Sensitivity analysis for steady state...1963. Sensitivity Analysis of Dynamical Systems...cyclically operated reactors and separators...Application of sensitivity analysis to oil refinery emission, Reliability Eng. Sys. Safety......

C. A. Hier-Majumder; B. J. Travis; E. Bélanger; G. Richard; A. P. Vincent; D. A. Yuen

2006-08-01T23:59:59.000Z

293

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

E-Print Network (OSTI)

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

Williamson, Mark

294

Energy Efficient Control of a Boosting System with Multiple Variable-Speed Pumps in Parallel  

E-Print Network (OSTI)

with multiple variable-speed pumps in parallel is to minimize the pump system energy consumption by controlEnergy Efficient Control of a Boosting System with Multiple Variable-Speed Pumps in Parallel Zhenyu. The experimental results show a huge potential to improve the energy efficiency of multi-pump systems using

Yang, Zhenyu

295

Feed gas contaminant removal in ion transport membrane systems  

SciTech Connect

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.

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

2012-04-03T23:59:59.000Z

296

System Effects of High Efficiency Filters in Homes  

E-Print Network (OSTI)

FIELD TESTING OF FILTER IMPACTS ON HVAC SYSTEM PERFORMANCEof Filters in Residential and Light-Commercial HVAC systems.HVAC system performance changes with different MERV filters

Walker, Iain S.

2014-01-01T23:59:59.000Z

297

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

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

Demonstrate an advanced water treatment and reuse process in a single hybrid system that combines forward osmosis with membrane distillation to achieve greater efficiency and increased water reuse.

298

Inducing a detector efficiency mismatch to hack a commercial quantum key distribution system  

Science Journals Connector (OSTI)

We propose and experimentally demonstrate a method to induce a large temporal detector efficiency mismatch in a commercial quantum key distribution system, paving the path for a...

Jain, Nitin; Lydersen, Lars; Wittmann, Christoffer; Wiechers, Carlos; Elser, Dominique; Marquardt, Christoph; Makarov, Vadim; Leuchs, Gerd

299

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

E-Print Network (OSTI)

clean and efficient energy conversion in power systems," inSteam Power Plant," in Energy conversion, YG Goswami and Fazeotropic mixture energy conversion," Energy Conversion and

Ho, Tony

2012-01-01T23:59:59.000Z

300

Area utilization efficiency of a sloping heliostat system for solar concentration  

Science Journals Connector (OSTI)

Area utilization efficiency (AUE) is formulated for a sloping heliostat system facing any direction. The effects of slope shading, incidence factor, sun shading, and tower blocking by...

Wei, Ling Y

1983-01-01T23:59:59.000Z

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


301

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

SciTech Connect

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.

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

2014-01-01T23:59:59.000Z

302

Boiler System Efficiency Improves with Effective Water Treatment  

E-Print Network (OSTI)

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...

Bloom, D.

303

LEDSGP/Transportation Toolkit/Key Actions/Evaluate the System | Open Energy  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » LEDSGP/Transportation Toolkit/Key Actions/Evaluate the System < LEDSGP‎ | Transportation Toolkit‎ | Key Actions(Redirected from Transportation Toolkit/Key Actions/Evaluate the System) Jump to: navigation, search LEDSGP Logo.png Transportation Toolkit Home Tools Training Contacts Key Actions for Low-Emission Development in Transportation Although no single approach or fixed process exists for low-emission development strategies (LEDS), the following key actions are necessary steps for implementing LEDS in the transportation sector. Undertaking these actions requires flexibility to adapt to dynamic societal conditions in a

304

Every Joule is Precious: The Case for Revisiting Operating System Design for Energy Efficiency  

E-Print Network (OSTI)

Every Joule is Precious: The Case for Revisiting Operating System Design for Energy Efficiency Amin, it is important to develop low-level mechanisms and higher- level policies to maximize energy efficiency and implementation from the point of view of energy efficiency rather than the more traditional OS metric

Vahdat, Amin

305

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

E-Print Network (OSTI)

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

Paris-Sud XI, Université de

306

Transport coefficients of the D1-D5-P system and the membrane paradigm  

Science Journals Connector (OSTI)

I discuss a correspondence between string theory and the black hole membrane paradigm in the context of the D1-D5-P system. By using the Kubo formula, I calculate transport coefficients of the effective string model induced by two kinds of minimal scalars. Then, I show that these transport coefficients exactly agree with the corresponding membrane transport coefficients of a five-dimensional near-extremal black hole with three charges.

Yuya Sasai

2012-01-11T23:59:59.000Z

307

Efficient memory control for avionics and embedded systems  

Science Journals Connector (OSTI)

Modern aircrafts have seen a significant growth of avionics systems. Most of new aircrafts have systems for navigation, automatic flight control, collision avoidance systems, flight data recorder, weather radar system as well as communication and monitoring systems. All of these systems use embedded computer systems with increasing memory requirements. In order to reduce the electricity consumed by these systems, we suggest detecting the portion of the computer memory that is actually used. The other portion can be temporarily shut down and turned on again when needed. Such a shut down can notably reduce the electricity consumption of the avionics systems.

Pinchas Weisberg; Yair Wiseman

2013-01-01T23:59:59.000Z

308

High-Efficiency, Low-Emission Refrigeration System | Department...  

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

of the compressor rack and system diagram for the CO2 refrigeration system.
Credit: Oak Ridge National Lab Image of the compressor rack and system diagram for the CO2...

309

Energy efficient scheduling techniques for real-time embedded systems  

E-Print Network (OSTI)

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 become more complex...

Prathipati, Rajesh Babu

2004-09-30T23:59:59.000Z

310

. . . developing, evaluating and marketing technology products to improve our transportation system A Publication of the  

E-Print Network (OSTI)

Vehicle Technology, the UI team has competed in the Clean Snowmobile Challenge for the past two years. . . developing, evaluating and marketing technology products to improve our transportation system A Publication of the National Institute for Advanced Transportation Technology TECH BRIEF March 2003

Kyte, Michael

311

SEDIMENT TRANSPORT AND DEPOSITION IN THE OK TEDI-FLY RIVER SYSTEM, PAPUA NEW GUINEA  

E-Print Network (OSTI)

SEDIMENT TRANSPORT AND DEPOSITION IN THE OK TEDI-FLY RIVER SYSTEM, PAPUA NEW GUINEA: THE MODELING. This sediment flows from the Ok Tedi to the Fly River, eventually reaching the Gulf of Papua. This document River. The second author of this report has been served as the sediment transport consultant for Ok Tedi

Parker, Gary

312

Modulation of Biotransformation Systems and ABC Transporters by Benznidazole in Rats  

Science Journals Connector (OSTI)

...and ABC Transporters by Benznidazole in Rats Virginia G. Perdomo a Juan P. Rigalli...systems and ABC transporters was evaluated in rats. Expression of cytochrome P-450 (CYP3A...proteins in liver from BZL-treated rats were observed without changes in kidney...

Virginia G. Perdomo; Juan P. Rigalli; Silvina S. M. Villanueva; María L. Ruiz; Marcelo G. Luquita; Claudia G. Echenique; Viviana A. Catania

2013-07-22T23:59:59.000Z

313

Study of the Overall Efficiency of a 7 pkw Solar Photovoltaic Pumpng System at Mugombwa (Rwanda)  

Science Journals Connector (OSTI)

The solar pumping system installed since 1985 by the ... is powered by a photovoltaic array of 132 pannels of 52 peak watt each. Our concern ... efficiency of the system by measuring both the solar global radiati...

Prosper Mpawenayo

1991-01-01T23:59:59.000Z

314

High Fidelity Radiative Thermal Transport Simulations of a Scramjet Propulsion System.  

E-Print Network (OSTI)

??Scramjets are a type of air breathing propulsion system that have the potential to efficiently provide thrust for atmospheric vehicles at high speeds. Defining the… (more)

Irvine, Adam Glenn

2013-01-01T23:59:59.000Z

315

Quantum Monte Carlo for large chemical systems: Implementing efficient strategies for petascale platforms and beyond  

E-Print Network (OSTI)

Quantum Monte Carlo for large chemical systems: Implementing efficient strategies for petascale platforms and beyond Anthony Scemama, Michel Caffarel Laboratoire de Chimie et Physique Quantiques, CNRS efficiently QMC simulations for large chemical systems are pre- sented. These include: i.) the introduction

Paris-Sud XI, Université de

316

Field Measurements of Heating System Efficiency in Nine Electrically-Heated Manufactured Homes.  

SciTech Connect

This report presents the results of field measurements of heating efficiency performed on nine manufactured homes sited in the Pacific Northwest. The testing procedure collects real-time data on heating system energy use and heating zone temperatures, allowing direct calculation of heating system efficiency.

Davis, Bob; Siegel, J.; Palmiter, L.; Baylon, D.

1996-07-01T23:59:59.000Z

317

Steam Power Partnership: Improving Steam System Efficiency Through Marketplace Partnerships  

E-Print Network (OSTI)

to support the steam efficiency program. Today, the Steam Team includes, the North American Insulation Manufacturers Association (NAIMA), the American Gas Association (AGA), the Council of Industrial Boiler Owners (ClBO), Armstrong International... pinch technology, and high performance steam. ? Armstrong International - Three worldwide factory seminar facilities, 13 North American sales representative facilities, 4 international sales representative facilities, 8 co-sponsored facilities, 2...

Jones, T.

318

Electrical Equipment Replacement: Energy Efficiency versus System Compatibility  

E-Print Network (OSTI)

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...

Massey, G. W.

2005-01-01T23:59:59.000Z

319

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

SciTech Connect

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.

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

320

Scheduling Heterogeneous Wireless Systems for Efficient Spectrum Access  

E-Print Network (OSTI)

Radio approach for usage of the Virtual Unlicensed Spectrum (CORVUS) system exploits unoccupied licensed

Bao, Lichun; Liao, Shenghui

2010-01-01T23:59:59.000Z

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


321

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

E-Print Network (OSTI)

, as electricity and heating. In this paper, a coherent effort to integrate transport into energy planning2 emissions, electricity and heating have traditionally been in focus. As more and more countries have been successful within electricity and heating where political focus has produced actions

322

A Functional-Phylogenetic Classification System for Transmembrane Solute Transporters  

Science Journals Connector (OSTI)

...from the fusion of non-transport-regulatory domains to the channel-forming constituents...superfamilies, the putative transcriptional regulatory sensors have not been shown to be incapable...proteins and protein domains function in regulatory processes, sometimes in addition to...

Milton H. Saier Jr.

2000-06-01T23:59:59.000Z

323

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

SciTech Connect

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.

S. G. Johnson; K. L. Lively

2010-05-01T23:59:59.000Z

324

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. Principal goals are to assess survival and straying at adulthood. Net pens are proposed as a low cost

325

Rural ITS Safety Solution Systems University of Minnesota Center for Transportation Studies!  

E-Print Network (OSTI)

Rural ITS Safety Solution Systems (RITSS)! University of Minnesota ­ Center for Transportation! · Most Crashes Occur in Good Driving Conditions! ­ 54% of fatal and 2/3 of nonfatal occur during daylight

Minnesota, University of

326

Analysis of a hospital network transportation system with discrete event simulation  

E-Print Network (OSTI)

VA New England Healthcare System (VISN1) provides transportation to veterans between eight medical centers and over 35 Community Based Outpatient Clinics across New England. Due to high variation in its geographic area, ...

Kwon, Annie Y. (Annie Yean)

2011-01-01T23:59:59.000Z

327

Improving Energy Efficiency of Compressed Air System Based onSystem Audit  

SciTech Connect

Industrial electric motor systems consume more than 600billion kWh annually, accounting for more than 50 percent of China selectricity use. The International Energy Agency estimates thatoptimizing motor systems results in an improvement of 20-25 percent,which is well-supported by experience in both the U.S. and China.Compressed air systems in China use 9.4 percent of all electricity.Compressed air use in China is growing rapidly, as new industrial plantsare built and the production processes of existing plants expand andchange. Most of these systems, whether existing or new, are not optimizedfor energy efficiency. This paper will present a practitioner'sperspective on theemergence of compressed air auditing services inChina, specifically as it pertains to Shanghai and surrounding areas.Both the methodology used and the market development of these compressedair system services will be addressed. Finally, the potential for energysaving opportunities will be described based on highlights from over 50compressed air system energy audits completed by Shanghai EnergyConservation Service Center, both during the United Nations IndustrialDevelopment Organization (UNIDO) China Motor System Energy ConservationProgram, and after this training program was completed.

Shanghai, Hongbo Qin; McKane, Aimee

2007-06-01T23:59:59.000Z

328

High Quality Down Lighting Luminaire with 73% Overall System Efficiency  

SciTech Connect

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.

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

2010-08-31T23:59:59.000Z

329

Highly efficient photochemical HCOOH production from CO{sub 2} and water using an inorganic system  

SciTech Connect

We have constructed a system that uses solar energy to react CO{sub 2} with water to generate formic acid (HCOOH) at an energy conversion efficiency of 0.15%. It consists of an AlGaN/GaN anode photoelectrode and indium (In) cathode that are electrically connected outside of the reactor cell. High energy conversion efficiency is realized due to a high quantum efficiency of 28% at 300 nm, attributable to efficient electron-hole separation in the semiconductor's heterostructure. The efficiency is close to that of natural photosynthesis in plants, and what is more, the reaction product (HCOOH) can be used as a renewable energy source.

Yotsuhashi, Satoshi; Hashiba, Hiroshi; Deguchi, Masahiro; Zenitani, Yuji; Hinogami, Reiko; Yamada, Yuka [Advanced Technology Research Laboratory, Panasonic Corporation, Soraku-gun, Kyoto 619-0237 (Japan); Deura, Momoko; Ohkawa, Kazuhiro [Department of Applied Physics, Tokyo University of Science, Shinjuku, Tokyo 162-8601 (Japan)

2012-12-15T23:59:59.000Z

330

Advanced Klystrons for High Efficiency Accelerator Systems - Final Report  

SciTech Connect

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.

Read, Michael; Ives, Robert Lawrence

2014-03-26T23:59:59.000Z

331

Membrane vesicles: A simplified system for studying auxin transport  

SciTech Connect

Indoleacetic acid (IAA), the auxin responsible for regulation of growth, is transported polarly in plants. Several different models have been suggested to account for IAA transport by cells and its accumulation by membrane vesicles. One model sees diffusion of IAA driven by a pH gradient. The anion of a lipophilic weak acid like IAA or butyrate accumulates in an alkaline compartment in accord with the size of the pH gradient The accumulation of IAA may be diminished by the permeability of its lipophilic anion. This anion leak may be blocked by NPA. With anion efflux blocked, a gradient of two pH units would support an IAA accumulation of less than 50-fold at equilibrium (2) Another model sees diffusion of IAA in parallel with a saturable symport (IAA[sup [minus

Goldsmith, M.H.M.

1989-01-01T23:59:59.000Z

332

Transportation Policy Analysis and Systems Planning Fall 2009/2010  

E-Print Network (OSTI)

, the information sources Reading: Basic background on Transportation in the US: http://www.bts.gov/publications/bts_special_report/2007_10_03/pdf/entire.pdf Energy Flow Diagram: http://www.eia.doe.gov/emeu/aer/pdf/pages/sec1_3.pdfv History of US DOT Homework 1: The Last Drop Class Notes: Week 1 Week 2 Tue Sep 29 7:00-8:25 Current

Singh, Jaswinder Pal

333

Scalable, Efficient Solid Waste Burner System - Energy Innovation...  

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

combustion experts at CSU, the device is superior to other systems and achieves improved gasification and combustion of biomass and waste through novel chassis design and process....

334

Low-Latency Techniques for Improving System Energy Efficiency /  

E-Print Network (OSTI)

Operating Systems and Computer Architecture, 2008. [81] Y.Symposium on Computer Architecture, pages 338–347, 2010. [on High Performance Computer Architecture, pages 291–300,

Strong, Richard D.

2013-01-01T23:59:59.000Z

335

Lean Gasoline System Development for Fuel Efficient Small Car  

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

NOx after-treatment systems have functional implementation limitations (i.e. performance, cost, packaging, etc.) * Significant fuel economy improvement requires integration of...

336

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 ace063smith2012o.pdf More Documents & Publications Lean Gasoline System Development for Fuel...

337

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...

338

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

SciTech Connect

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.

Hardee, H.C.

1980-09-01T23:59:59.000Z

339

Efficient object storage journaling in a distributed parallel file system  

Science Journals Connector (OSTI)

Journaling is a widely used technique to increase file system robustness against metadata and/or data corruptions. While the overhead of journaling can be masked by the page cache for small-scale, local file systems, we found that Lustre's use of journaling ...

Sarp Oral; Feiyi Wang; David Dillow; Galen Shipman; Ross Miller; Oleg Drokin

2010-02-01T23:59:59.000Z

340

Improving efficiency of hybrid system simulation in Modelica  

Science Journals Connector (OSTI)

Modelica supports the modeling of hybrid systems by means of differential and algebraic equations, and discrete-events. The simulation of Modelica models is carried out by solving the continuous-time equations, detecting the occurrence of events and ... Keywords: Modelica, event iteration, hybrid system modeling, simulation performance

Victorino Sanz, Alfonso Urquia, Francesco Casella

2014-10-01T23:59:59.000Z

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


341

IMPROVING THE EFFICIENCY OF AN EXISTING GROUNDWATER REMEDIATION SYSTEM  

E-Print Network (OSTI)

.9 kilowatt total) 14 #12;ENERGY IMPROVEMENT BENEFITS 15 #12;RETURN ON INVESTMENT: SOLAR PANELS 16 #12 of grid energy with solar panel arrays Long-term operations and maintenance costs were significantly.7 kilowatt total) 13 #12;GROUNDWATER SYSTEM ENERGY IMPROVEMENTS ­ Northern Solar Array: 56 panel system (10

Illinois at Urbana-Champaign, University of

342

IBM and Energy Efficiency: Systems Recommisiong and Optimization  

E-Print Network (OSTI)

of the systems ? Temperature , Humidification, Static pressure, Economizer mode ? Existing instrumentation reviewed and new instruments added to deliver enhanced control capabilities to support project needs. ? PID control loop tuning was performed... of the systems ? Temperature , Humidification, Static pressure, Economizer mode ? Existing instrumentation reviewed and new instruments added to deliver enhanced control capabilities to support project needs. ? PID control loop tuning was performed...

Veilleux, Y.; Boulianne, J. P.; Lefebvre, P.

2013-01-01T23:59:59.000Z

343

Transportation Analysis | Clean Energy | ORNL  

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

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

344

Land Use and Water Efficiency in Current and Potential Future U.S. Corn and Brazilian Sugarcane Ethanol Systems (Poster), NREL (National Renewable Energy Laboratory)  

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

Use and Water Efficiency in Current and Potential Future U.S. Corn and Use and Water Efficiency in Current and Potential Future U.S. Corn and Brazilian Sugarcane Ethanol Systems Ethan Warner 1 , Yimin Zhang 1 , Helena Chum 2 , Robin Newmark 1 Biofuels represent an opportunity for improved sustainability of transportation fuels, promotion of rural development, and reduction of GHG emissions. But the potential for unintended consequences, such as competition for land and water, necessitates biofuel expansion that considers the complexities of resource requirements within specific contexts (e.g., technology, feedstock, supply chain, local resource availability). Through technological learning, sugarcane and corn ethanol industries have achieved steady improvements in

345

Efficient design of desalination system using photovoltaic and packed bed systems  

SciTech Connect

This work presents a new way to realize continuous operation of a solar desalination system to produce fresh water using solar energy for a dual purpose. Here, solar energy is used directly as heat energy through solar radiation incident on an inverse V-shape still cover during sunlight hours. At the same time, the solar energy can be converted through a photovoltaic (PV) array into electric energy, which is stored in the battery system during sunlight hours. To realize the continuity of still operation daily and overnight, the batteries are discharged during the night at a suitable rate to feed an electric heater. The electric heater is designed to generate the required heat for desalination during the night. The heat is equivalent to that which can be absorbed during the day and that gives the temperature difference to gain evaporation and fresh water (productivity). This modified still is provided with a packed bed layer installed in the bottom of the basin to assist the system during the day and at night, i.e., this modified still will be more efficient. The quantity of heat energy during the night is adjusted to give a saline water temperature in the range that occurs in the actual solar still during sunlight hours. The performance of all components of the present still are discussed. The use of PV and backed bed systems means higher efficiency than the passive still, as the modified still produces large quantities of fresh water in August for a saline water depth of 0.01 m by using glass wool insulation 0.05 m thick and glass spheres as a packed bed with 0.0213 m bed length.

Fahmy, F.H.; Abdel-Rehim, Z.S. [National Research Center, Cairo (Egypt)

1998-08-01T23:59:59.000Z

346

Project Title: Complete System-Level Efficient and Interoperable...  

Office of Environmental Management (EM)

and architecture since a microgrid will be likely upgraded from an existing system. 2014 Smart Grid R&D Program Peer Review Project Summary 2 2014 Smart Grid R&D Program Peer...

347

Metering Air Compressor Systems for Efficiency: A Progress Report  

E-Print Network (OSTI)

. ?Pneumatic Handbook - 7th Edition?. The Trade and Technical Press Limited, Crown House, Morden, Surrey, England. 2. Department of Energy (DOE). 1984. ?Energy Conservation - Compressed Air Systems, A Guidebook on Energy and Cost Savings?. DOE...

Joseph, B.

2005-01-01T23:59:59.000Z

348

Nutrient use efficiency in bioenergy cropping systems: Critical research questions  

E-Print Network (OSTI)

x giganteus. Biomass Bioenergy 12:21-24. Christian, D.G. ,for-biofuels systems. Biomass Bioenergy Gentry, L.E. , F.E.cynosuroides. Biomass Bioenergy 12:419-428. Brejda, J.J.

Brouder, Sylvie; Volenec, Jeffrey J; Turco, Ronald; Smith, Douglas R; Ejeta, Gebisa

2009-01-01T23:59:59.000Z

349

Improving the Water Efficiency of Cooling Production System  

E-Print Network (OSTI)

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...

Maheshwari, G.; Al-Hadban, Y.; Al-Taqi, H. H.; Alasseri, R.

2010-01-01T23:59:59.000Z

350

TOWARDS A PORTABLE, MEMORY-EFFICIENT TEST SYSTEM FOR CONDUCTED ENERGY WEAPONS  

E-Print Network (OSTI)

TOWARDS A PORTABLE, MEMORY-EFFICIENT TEST SYSTEM FOR CONDUCTED ENERGY WEAPONS Peyman Rahmati1. The proposed PTS has been de- velopped for the most widely used Conducted Energy Weapons (CEW), Taser X26, and memory-efficient. Index Terms-- Conducted Energy Weapons, Calibration, Electrical Stimulation

Adler, Andy

351

A System for Energy-Efficient Data Management Yi-Cheng Tu 1  

E-Print Network (OSTI)

.e., query processing, indexing). Therefore, there is the need to develop DBMSs with energy efficiencyA System for Energy-Efficient Data Management Yi-Cheng Tu 1 , Xiaorui Wang 2 , Bo Zeng 3 1 Dept, University of South Florida, U.S.A. 1 ytu@cse.usf.edu, 2 xwang@ece.osu.edu, 3 bzeng@usf.edu ABSTRACT Energy

Tu, Yicheng

352

Energy Efficient Radio Resource Management in a Coordinated Multi-Cell Distributed Antenna System  

E-Print Network (OSTI)

and two energy efficient radio resource management schemes are investigated; either ports can be switched - Distributed antenna systems, CoMP, HetNets, port selection, radio resource management, energy efficiency ports in LTE-A terminology). The rising energy costs and environmental concerns have led researchers

Yanikomeroglu, Halim

353

Advanced Vehicles Group: Center for Transportation Technologies and Systems  

SciTech Connect

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

Not Available

2008-08-01T23:59:59.000Z

354

Starter systems designed for efficient air/gas comsumption  

SciTech Connect

This paper examines engine starting systems designed by Pow-R-Quik. Pow-R-Quik's most recent product line includes several models that are designed to start most diesel and natural gas engines. Pow-R-Quick also offers air starting systems for a wide range of gas turbine applications. The model DS16, air or gas starter, is designed for engines with a displacement up to 500 cid diesel and up to 1000 cid natural gas. The DS60 model is also an air or gas operated starter with specially designed heavy duty bearings for maximum performance. To prove out starter durability and performance, Pow-R-Quik has installed three fully instrumented diesel engine test cells. The number of starts that can be achieved ranges from zero to 99,000. The system can be set to regulate the air for low or high pressure starts, control the lubricant, etc.

Not Available

1985-05-01T23:59:59.000Z

355

High-Efficiency Thermal Energy Storage System for CSP  

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

April 15. 2013 | Singh April 15. 2013 | Singh * Thermal modeling will be conducted to establish the benefits of using a high thermal conducting graphite foams in conjunction with PCM and to develop a design for a laboratory scale prototype. * Variety of characterizations will be carried out to qualify the materials (PCMs, alloys, coatings) for the prototype construction. * Process to infiltrate selected PCM into the foam will be developed. * Using the appropriate brazing/joining techniques, prototype will be assembled. * Performance testing of the TES system prototype to ensure a full- scale system will meet the SunShot goals. * Complete cost analysis of the proposed TES system * Complete laboratory scale prototype design * Develop SiC coating using polycarbosilanes for graphite

356

Energy Saving System for Home Energy Measurement and Efficient Power Control  

Science Journals Connector (OSTI)

Energy Saving System (ESS) is designed and implemented for real-time home energy measurement and the efficient power control at homes or buildings. For energy saving functions and the future extension to the...

Kwang-Soon Choi; Young-Choong Park; Yang-Keun Ahn…

2012-01-01T23:59:59.000Z

357

Project Profile: High-Efficiency Thermal Storage System for Solar Plants  

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

SENER, under the Baseload CSP FOA, aims to develop a highly efficient, low-maintenance and economical thermal energy storage (TES) system using solid graphite modular blocks for CSP plants.

358

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

E-Print Network (OSTI)

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...

Zhu, H.

2006-01-01T23:59:59.000Z

359

On the Efficiency of the New York Independent System Operator Market for Transmission  

E-Print Network (OSTI)

-8061, USA, Chris Marnay, Staff Scientist, Electricity Market Studies, Environmental Energy Technologies 947208061, USA.; Emily S. Bartholomew, Senior Research Associate, Electricity Market Studies, EnvironmentalOn the Efficiency of the New York Independent System Operator Market for Transmission Congestion

360

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

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

Presentation on Ultra Efficient Combined Heat, Hydrogen, and Power System, given by Pinakin Patel at the U.S. DOE Industrial Distributed Energy Portfolio Review Meeting in Washington, D.C. on June 1-2, 2011.

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


361

Injection Timing Effects on Brake Fuel Conversion Efficiency and Engine System's Respones  

E-Print Network (OSTI)

timing effects on the combustion processes, engine efficiency, and the engine system's responses. The engine in the study is a medium duty diesel engine (capable of meeting US EPA Tier III off road emission standards) equipped with common rail direct...

McLean, James Elliott

2011-10-21T23:59:59.000Z

362

Techniques for Maximizing Efficiency of Solar Energy Harvesting Systems (Invited Paper)  

E-Print Network (OSTI)

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

Shinozuka, Masanobu

363

Dynamical systems in nanophotonics: From energy efficient modulators to light forces and optomechanics  

E-Print Network (OSTI)

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 ...

Kaertner, Franz X.

364

Efficient error correction for speech systems using constrained re-recognition  

E-Print Network (OSTI)

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 ...

Yu, Gregory T

2008-01-01T23:59:59.000Z

365

High-efficient solar power systems based on thermionic converter with small gap  

SciTech Connect

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.}

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

366

Associative Memories Provide an Efficient Control Mechanism for a Parallel Production System Architecture  

E-Print Network (OSTI)

Associative Memories Provide an Efficient Control Mechanism for a Parallel Production System a parallel architecture for production systems [2, 3, 5]. This novel architecture allows parallel production. The elimination of global synchronization in production systems was made possible by the use of serializability

Amaral, José Nelson

367

Update Sustainable Transportation  

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

Transportation Transportation Vol.4, No.2 * August 2013 ORNL researchers Andreas Malikopoulos (right) and Stuart Daw Intelligent transportation vehicle subsystems will continue to grow exponentially, Andreas added. Developing control systems that are able to mimic the efficient learning and decision-making processes of biological organisms without resorting to on-board supercomputers could revolutionize transportation, he said. Stuart suggested, in the long-term, that "smart" vehicles need to mimic the ability of humans to efficiently perceive, filter, and rapidly respond to the flood of information available from the local environment, as well as from their own internal parts. He added that the idea of "intelligence" can also be extended to groups of vehicles.

368

Direct Digital Control in Air Conditioning Systems for Energy Efficiency  

E-Print Network (OSTI)

the function and the level of the building, but also save energy. At present, air-conditioning design in internal commercial buildings is becoming more complex and enormous. The proportion of air conditioning systems in the whole building is getting larger...

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

2006-01-01T23:59:59.000Z

369

High Efficiency Energy Conversion Systems for Liquid Nitrogen Automobiles  

E-Print Network (OSTI)

replacements over the lifetime of the vehicle raises the specter of increased heavy metal pollution, were lead environmental burden and, in particular, would avoid the issues of heavy metals pollution associated with Pb energy storage, particularly lead-acid and Ni-Cd batteries. These heavy metal energy storage systems

Laughlin, Robert B.

370

Work domain analysis and intelligent transport systems: implications for vehicle design  

Science Journals Connector (OSTI)

This article presents a Work Domain Analysis (WDA) of the road transport system in Victoria, Australia. A series of driver information requirements and tasks that could potentially be supported through the use of Intelligent Transport Systems (ITS) are then extracted from the WDA. The potential use of ITS technologies to circumvent these information gaps and provide additional support to drivers is discussed. It is concluded that driver information requirements are currently not entirely satisfied by contemporary vehicle design and also that there are a number of driving tasks that could be further supported through the provision of supplementary systems within vehicles.

Paul M. Salmon; Michael Regan; Michael G. Lenne; Neville A. Stanton; Kristie Young

2007-01-01T23:59:59.000Z

371

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

E-Print Network (OSTI)

set (genset) for power and a new trailer for mobility. Training on the operation of machine enforcement personnel from these states will aid in collection of field data on WRI and other safety related Study, the Infrared-Based Selection System, and vehicle Out-of ­Service data collection. The CMVRTC team

372

Energy transport in optical systems with partially coherent light  

Science Journals Connector (OSTI)

The propagation of a generalized radiance through optical systems is considered under the customary assumptions of physical optics (paraxial propagation in a uniform medium and...

Friberg, Ari T

1986-01-01T23:59:59.000Z

373

Membrane systems for energy efficient separation of light gases  

SciTech Connect

Ethylene and propylene are two of the largest commodity chemicals in the United States and are major building blocks for the petrochemicals industry. These olefins are separated currently by cryogenic distillation which demands extremely low temperatures and high pressures. Over 75 billion pounds of ethylene and propylene are distilled annually in the US at an estimated energy requirement of 400 trillion BTU`s. Non-domestic olefin producers are rapidly constructing state-of-the-art plants. These energy-efficient plants are competing with an aging United States olefins industry in which 75% of the olefins producers are practicing technology that is over twenty years old. New separation opportunities are therefore needed to continually reduce energy consumption and remain competitive. Amoco has been a leader in incorporating new separation technology into its olefins facilities and has been aggressively pursuing non-cryogenic alternatives to light gas separations. The largest area for energy reduction is the cryogenic isolation of the product hydrocarbons from the reaction by-products, methane and hydrogen. This separation requires temperatures as low as {minus}150{degrees}F and pressures exceeding 450 psig. This CRADA will focus on developing a capillary condensation process to separate olefinic mixtures from light gas byproducts at temperatures that approach ambient conditions and at pressures less than 250 psig; this technology breakthrough will result in substantial energy savings. The key technical hurdle in the development of this novel separation concept is the precise control of the pore structure of membrane materials. These materials must contain specially-shaped channels in the 20-40A range to provide the driving force necessary to remove the condensed hydrocarbon products. In this project, Amoco is the technology end-user and provides the commercialization opportunity and engineering support.

Devlin, D.J.; Archuleta, T.; Barbero, R. [Los Alamos National Lab., NM (United States)] [and others

1997-04-01T23:59:59.000Z

374

Pulp and Paper Mills: Profiting for Efficient Motor System Use | ENERGY  

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

Pulp and Paper Mills: Profiting for Efficient Motor System Use Pulp and Paper Mills: Profiting for Efficient Motor System Use Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources

375

Personal Comfort Systems: Cooling/Heating Local Body Parts Efficient Ways  

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

Personal Comfort Systems: Cooling/Heating Local Body Parts Efficient Ways Personal Comfort Systems: Cooling/Heating Local Body Parts Efficient Ways to Provide Comfort Indoors Speaker(s): Hui Zhang Date: October 9, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Rongxin Yin This presentation describes energy efficient approaches to provide comfort in offices by creating non-uniform and transient thermal environments. The presentation will describe 1) distributions and characteristics of thermoreceptors of human body, 2) comfort responses of people exposed to complex thermal environments, 3) concept of "alliesthesia", 4) personal comfort systems developed by CBE, 5) their energy efficiency and demand response potential, and 6) the CBE advanced thermal comfort model. A recording of this seminar is available at: https://vimeo.com/51536661

376

ALTERNATE HIGH EFFICIENCY PARTICULATE AIR (HEPA) FILTRATION SYSTEM  

SciTech Connect

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.

Bruce Bishop; Robert Goldsmith; Karsten Nielsen; Phillip Paquette

2002-08-16T23:59:59.000Z

377

Simplified, low?cost, efficient, acoustic levitation system  

Science Journals Connector (OSTI)

Recently I have improved apparatus for the acoustic levitation of a drop of one liquid in another making it practical to build for anyone who has an oscillaior and audio amplifier with response to 50 kHz a current probe an inexpensive oscilloscope and a lead zirconate titanate cylinder of the right size. This piezoelectric cylinder (1.5?in. o.d. and length 0.125?in. thickness) is epoxied near the center of a foot long piece of standard 30?mm o.d. pyrex tube. A hollow piston with o?ring seal and O. 005?in. diaphragm acts as an excellent bottom pressure?release reflector of acoustic energy as is the top air—liquid interface leading to strong acoustic standing waves at particular resonance frequencies. Optimum frequencies are determined by observing the input current to the transducer as the oscillator is tuned between 47 and 55 kHz and as liquid and piston levels are adjusted. Benzene droplets in water have been levitated with only a fraction of a watt input to the transducer. More details of this simple system will be described. [Work supported by U. S. Office of Naval Research and NSF Heat Transfer Program.

Robert E. Apfel

1977-01-01T23:59:59.000Z

378

Modeling the Hydrogeochemical Transport of Radionuclides through Engineered Barriers System in the Proposed LLW Disposal Site of Taiwan - 12082  

SciTech Connect

A proposed site for final disposal of low-level radioactive waste located in Daren Township of Taitung County along the southeastern coast has been on the selected list in Taiwan. The geology of the Daren site consists of argillite and meta-sedimentary rocks. A mined cavern design with a tunnel system of 500 m below the surface is proposed. Concrete is used as the main confinement material for the engineered barrier. To investigate the hydrogeochemical transport of radionuclides through engineered barriers system, HYDROGEOCHEM5.0 model was applied to simulate the complex chemical interactions among radionuclides, the cement minerals of the concrete, groundwater flow, and transport in the proposed site. The simulation results showed that the engineered barriers system with the side ditch efficiently drained the ground water and lowered the concentration of the concrete degradation induced species (e.g., hydrogen ion, sulfate, and chloride). The velocity of groundwater observed at side ditch gradually decreased with time due to the fouling of pore space by the mineral formation of ettringite and thaumasite. The short half-life of Co-60, Sr-90 and Cs-137 significantly reduced the concentrations, whereas the long half-life of I-129(1.57x10{sup 7} years) and Am-241(432 years) remain stable concentrations at the interface of waste canister and concrete barrier after 300 years. The mineral saturation index (SI) was much less than zero due to the low aqueous concentration of radionuclide, so that the precipitation formation of Co-60, Sr-90, I-129, Cs-137 and Am-241 related minerals were not found. The effect of adsorption/desorption (i.e., surface complexation model) could be a crucial geochemical mechanism for the modeling of liquid-solid phase behavior of radionuclide in geochemically dynamic environments. Moreover, the development of advanced numerical models that are coupled with hydrogeochemical transport and dose assessment of radionuclide is required in the future. (authors)

Lin, Wen-Sheng [Hydrotech Research Institute, National Taiwan University, Taipei, Taiwan (China); Liu, Chen-Wuing; Tsao, Jui-Hsuan [Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan (China); Li, Ming-Hsu [Institute of Hydrological and Oceanic Sciences, National Central University, Jhongli, Taiwan (China)

2012-07-01T23:59:59.000Z

379

Cost, energy and carbon dioxide (CO2) effectiveness of a harvesting and transporting system for residual forest biomass  

Science Journals Connector (OSTI)

The purpose of this study is to examine the feasibility of a system to harvest logging residues (or slashes) as a new resource for energy in Japan. A harvesting and transporting system ... the system is discussed...

Takuyuki Yoshioka; Kazuhiro Aruga; Hideo Sakai…

2002-08-01T23:59:59.000Z

380

Application of PV panels into electricity generation system of compression stations in gas transporting systems.  

E-Print Network (OSTI)

??  This thesis deals with problems of electricity generation and saving at compression stations of magistral gas transporting pipelines in Russia. Russia is a biggest… (more)

Belyaev, Alexey

2013-01-01T23:59:59.000Z

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


381

Purchasing a New Energy-Efficient Central Heating System | Department of  

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

Purchasing a New Energy-Efficient Central Heating System Purchasing a New Energy-Efficient Central Heating System Purchasing a New Energy-Efficient Central Heating System October 21, 2008 - 4:00am Addthis John Lippert Energy prices are skyrocketing. According to the Energy Information Administration's October 7, 2008 forecast, heating fuel expenditures for the average household using oil as its primary heating fuel are expected to increase by $449 over last winter. Households using natural gas to heat their homes can expect to pay $155 more this winter, on average, than last year, and those using propane can expect to pay $188 more. Households heating primarily with electricity can expect to pay an average of $89 more. That's a lot of money resulting solely from rising heating expenses. You may long for the "good old days," but when it comes to heating systems,

382

Purchasing a New Energy-Efficient Central Heating System | Department of  

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

Purchasing a New Energy-Efficient Central Heating System Purchasing a New Energy-Efficient Central Heating System Purchasing a New Energy-Efficient Central Heating System October 21, 2008 - 4:00am Addthis John Lippert Energy prices are skyrocketing. According to the Energy Information Administration's October 7, 2008 forecast, heating fuel expenditures for the average household using oil as its primary heating fuel are expected to increase by $449 over last winter. Households using natural gas to heat their homes can expect to pay $155 more this winter, on average, than last year, and those using propane can expect to pay $188 more. Households heating primarily with electricity can expect to pay an average of $89 more. That's a lot of money resulting solely from rising heating expenses. You may long for the "good old days," but when it comes to heating systems,

383

Behavioral/Systems/Cognitive Transport of Information along Unidimensional Layered  

E-Print Network (OSTI)

of rate-code averages, it may still allow exact temporal patterns to reliably pass through the layers of Dissociated Hippocampal Neurons and Implications for Rate Coding Ofer Feinerman and Elisha Moses Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel

Moses, Elisha

384

Risk Assessment of Railway Transportation Systems using Timed Fault Trees  

E-Print Network (OSTI)

dierence between the GRAIL and current railway systems is that it involves unmanned operation. Trains as culverts, bridges, or buildings) encountered when the train is running. Dier- ent operation environments accuracy is not satisfied, there will be problem that is caused due to time factors in the train oper

Miller, Alice

385

Smart Mobility: Next Generation Transportation System (position paper)  

E-Print Network (OSTI)

. Current schemes of traffic management are based on batch/platoon/bulk/aggregated information Sensors, Vehicle Re-identification, Pay-as-Go units, and Smart Cameras & Video processing. · Smart-vehicle information systems, and Driver Identification. · Smart Communications: Various forms of wireless

Rajkumar, Ragunathan "Raj"

386

Massachusetts Institute of Technology Case Study: Personal Transportation System  

E-Print Network (OSTI)

a personal aircraft (VTOL). 3 Image courtesy of Boeing Research & Technology #12;Motivation · However, flying Makes high-level decisions Plans path within risk bounds Stanford/Boeing Dialog Management #12;System-level decisions Plans path within risk bounds Stanford/Boeing Dialog Management #12;Generate Temporal Plan

Williams, Brian C.

387

Increasing efficiency of data mining systems by machine unification and double machine cache  

E-Print Network (OSTI)

Increasing efficiency of data mining systems by machine unification and double machine cache and in general data mining systems, we need to search through huge spaces of machine learn- ing algorithms. Meta-learning and other complex data mining approaches need to train and test thousands of learning machines while

Jankowski, Norbert

388

Using XML to Build Efficient Transaction-Time Temporal Database Systems on Relational Databases  

E-Print Network (OSTI)

(virtual) representations of the database history, (b) XQuery to express powerful temporal queriesUsing XML to Build Efficient Transaction-Time Temporal Database Systems on Relational Databases the ArchIS system that achieves full-functionality transaction-time databases without re- quiring temporal

Zaniolo, Carlo

389

EFFICIENT VEHICLE TRACKING AND CLASSIFICATION FOR AN AUTOMATED TRAFFIC SURVEILLANCE SYSTEM  

E-Print Network (OSTI)

surveillance system needs to detect vehicles and classify them if possible. Generating vehicle trajectoriesEFFICIENT VEHICLE TRACKING AND CLASSIFICATION FOR AN AUTOMATED TRAFFIC SURVEILLANCE SYSTEM Amol to detect the pose of a vehicle in the 3D world. This information is used in a model-based vehicle detection

Nicolescu, Mircea

390

EVITA: A Prototype System for Efficient Visualization and Interrogation of Terascale Datasets  

E-Print Network (OSTI)

EVITA: A Prototype System for Efficient Visualization and Interrogation of Terascale Datasets Raghu and visualization techniques has not kept pace with the growth in size and complexity of such datasets. To address datasets. The cornerstone of the EVITA system is a representational scheme that allows ranked access

Fowler, James E.

391

OBSERVE: Occupancy-Based System for Efficient Reduction of HVAC Energy  

E-Print Network (OSTI)

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

Carreira-Perpiñán, Miguel Á.

392

Energy Efficient Single Stack Exhaust Fan Systems (E3S3F)  

E-Print Network (OSTI)

This paper first investigates the fan energy performance of a constant air volume exhaust system. Two single stack energy efficient exhaust fan systems (E3S3F) are presented. The E3S3F-I has the static pressure sensor located at the inlet...

Wang, G.; Liu, M.

2001-01-01T23:59:59.000Z

393

Lessons Learned from the Alternative Fuels Experience and How They Apply to the Development of a Hydrogen-Fueled Transportation System  

SciTech Connect

Report describes efforts to deploy alternative transportation fuels and how those experiences might apply to a hydrogen-fueled transportation system.

Melendez, M.; Theis, K.; Johnson, C.

2007-08-01T23:59:59.000Z

394

Efficiency of energy transfer in a light-harvesting system under quantum coherence  

E-Print Network (OSTI)

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.

Alexandra Olaya-Castro; Chiu Fan Lee; Francesca Fassioli Olsen; Neil F. Johnson

2007-08-08T23:59:59.000Z

395

Determination of desorption efficiency utilizing direct injection: a dynamic calibration system and phase equilibrium  

E-Print Network (OSTI)

) Ronald H. Williams B. S. , Purdue University B. S. , University of Arkansas Chairman of Advisory Committee: Dr . R. B. Konzen Three methods for determining desorption efficiency for or ganic solvents adsorbed on activated charcoal were compared.... The three methods involved a dynamic calibra- tion system, direct injection, and phase equilibrium. The methods differed in the manner in which the analyte was placed on the adsorbent. The desorption efficiencies ob- tained using the dynamic calibration...

Williams, Ronald H

2012-06-07T23:59:59.000Z

396

Chamber transport  

SciTech Connect

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.

OLSON,CRAIG L.

2000-05-17T23:59:59.000Z

397

SunShot Initiative: High-Efficiency Thermal Energy Storage System for CSP  

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

High-Efficiency Thermal Energy Storage System for CSP High-Efficiency Thermal Energy Storage System for CSP ANL logo Photo of a black and white porous material magnified 50 times by a microscope. Microstructure of the highly thermal conductive foam that will be used for the prototype TES system. Image from ANL Argonne National Laboratory and project partner Ohio Aerospace Institute, under the National Laboratory R&D competitive funding opportunity, will design, develop, and test a prototype high-temperature and high-efficiency thermal energy storage (TES) system with rapid charging and discharging times. By increasing the efficiency of TES systems, this project aims to lower the capital costs of concentrating solar power (CSP) systems. Approach The research team is developing and evaluating a novel approach for TES at temperatures greater than 700˚C for CSP systems. The approach uses high thermal conductivity and high-porosity graphite foams infiltrated with a phase change material (PCM) to provide TES in the form of latent heat.

398

A novel linear switched reluctance motor for railway transportation systems  

Science Journals Connector (OSTI)

This paper presents the design and realization of a new linear switched reluctance motor (LSRM) structure, especially suitable for high-speed railway systems. The new model has a double active stator configuration and provides high force for many applications with low cost. The characteristics of the LSRM are obtained by using finite element analysis (FEA) and analytical calculations. The results of the FEA and analytical calculations are presented, and compared with experimental results. In addition, a classical double-sided LSRM (DSLSRM) is modeled with the same specifications of the new motor structure and the results are compared.

Ferhat Daldaban; Nurettin Ustkoyuncu

2010-01-01T23:59:59.000Z

399

Hybrid Plasma Reactor/Filter for Transportable Collective Protection Systems  

SciTech Connect

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.

Josephson, Gary B.; Tonkyn, Russell G.; Frye, J. G.; Riley, Brian J.; Rappe, Kenneth G.

2011-04-06T23:59:59.000Z

400

Sitraer 7 (2008) LXIV-LXXIV TECHNOLOGY ROADMAP FOR THE FUTURE AIR TRANSPORT SYSTEM  

E-Print Network (OSTI)

Sitraer 7 (2008) LXIV- LXXIV LXIV TECHNOLOGY ROADMAP FOR THE FUTURE AIR TRANSPORT SYSTEM BEING to the burden for the airline industry. The following paper will present a technology roadmap for the future air of new aircraft and new operational concepts with breakthrough technology improvements. Given

Berlin,Technische Universität

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


401

Research Positionsfor Development of Novel Green Air Conditioning and Refrigeration Systems for Transportation Vehicles  

E-Print Network (OSTI)

in refrigeration and heat pump systems, HVAC, porous media development/characterization, transport phenomena of compact and lightweight heat exchangers for evaporator and condenser; v) Development of heatdriven adsorption chillers tailored to service vehicles; vi) Development and implementation of thermal energy

Bahrami, Majid

402

Synergistic approaches to mobile intelligent transportation systems considering low penetration rate  

Science Journals Connector (OSTI)

This paper investigates the effect of low penetration rate on mobile phone-based traffic state estimation (M-TES) models. Synergistic approaches, including an appropriate genetic algorithm (GA) based velocity-density estimation model and a notable artificial ... Keywords: Low penetration rate, Mobile intelligent transportation systems (MIT), Mobile probe, Traffic state estimation

T. M. Quang; Muhammad Ariff Baharudin; Eiji Kamioka

2014-02-01T23:59:59.000Z

403

Automated Transportation Management System (ATMS) V2.0 logistics module PBI acceptance criteria  

SciTech Connect

This document defines the acceptance criteria for the Automated Transportation Management System V2.0 Logistics Module Performance Based Incentive (PBI). This acceptance criteria will be the primary basis for the generation of acceptance test procedures. The purpose of this document is to define the minimum criteria that must be fulfilled to guarantee acceptance of the Logistics Module.

Weidert, R.S.

1995-02-28T23:59:59.000Z

404

Early Decline in Glucose Transport and Metabolism Precedes Shift to Ketogenic System in Female Aging and  

E-Print Network (OSTI)

in parallel to the decline in glucose transport suggesting lactate did not serve as an alternative fuel as an alternative fuel. In the 3xTgAD brain, utilization of ketone bodies as an alternative fuel was evident in mitochondrial function. The adaptive shift to the ketogenic system as an alternative fuel coincided with decline

Brinton, Roberta Diaz

405

On the Contribution of Compressed Air Systems to Energy Efficiency Targets  

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

On the Contribution of Compressed Air Systems to Energy Efficiency Targets On the Contribution of Compressed Air Systems to Energy Efficiency Targets - A Function-Based Bottom-Up Approach Speaker(s): Patrick Plötz Date: May 4, 2012 - 2:00pm Location: 90-4133 Seminar Host/Point of Contact: Sanaee Iyama Achieving current EU energy targets as stipulated in the energy service directive and in the energy strategy for 2020 implies substantial efficiency improvements across a variety of industrial end-uses. The achievable saving potential of an end-use depends considerably on the age structure of the existing stock and on the technology definition, i.e. whether a product approach, an extended product approach or a system-approach is used. Within this context, important ErP studies on air compressors are in preparation. In this paper, we address the possible

406

Benchmarking transportation logistics practices for effective system planning  

SciTech Connect

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)

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

407

Heat efficiency of “translucent cover-radiation absorbing heat-exchange panel” system of flat solar collectors  

Science Journals Connector (OSTI)

An analytic expression is proposed for determining the heat efficiency of the “translucent cover-radiation absorbing heat-exchange panel” system of flat solar collectors, and on its base the heat efficiency of th...

R. R. Avezov; N. R. Avezova

2008-09-01T23:59:59.000Z

408

State-of-the-art 3-D radiation transport methods for fusion energy systems  

Science Journals Connector (OSTI)

Recent advances in radiation transport simulation tools enable an increased fidelity and accuracy in modeling complex geometries in fusion systems. Future neutronics calculations will increasingly be based directly on these 3-D CAD-based geometries, allowing enhanced model complexity and improved quality assurance. Improvements have been made in both stochastic and deterministic radiation transport methodologies and their new capabilities will be compared briefly. A code comparison benchmark exercise has been specified based on a 40° sector of the ITER machine and the analysis results show good agreement. Additional analyses will be discussed, with particular attention to how these new capabilities provide new insights for engineering design of ITER components.

P.P.H. Wilson; R. Feder; U. Fischer; M. Loughlin; L. Petrizzi; Y. Wu; M. Youssef

2008-01-01T23:59:59.000Z

409

Ion transport membrane module and vessel system with directed internal gas flow  

DOE Patents (OSTI)

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.

Holmes, Michael Jerome (Thompson, ND); Ohrn, Theodore R. (Alliance, OH); Chen, Christopher Ming-Poh (Allentown, PA)

2010-02-09T23:59:59.000Z

410

Nanoclay Gelation Approach toward Improved Dye-Sensitized Solar Cell Efficiencies: An Investigation of Charge Transport and Shift in the TiO2 Conduction Band  

Science Journals Connector (OSTI)

Nanoclay Gelation Approach toward Improved Dye-Sensitized Solar Cell Efficiencies: An Investigation of Charge Transport and Shift in the TiO2 Conduction Band ... Nanoclay minerals play a promising role as additives in the liquid electrolyte to form a gel electrolyte for quasi-solid-state dye-sensitized solar cells, because of the high chemical stability, unique swelling capability, ion exchange capacity, and rheological properties of nanoclays. ... The nanoclays used in previous studies were mainly of smectite/montmorillonite type, which belong to the family of cationic clays (hydroxides layers with negative charge). ...

Xiu Wang; Sneha A. Kulkarni; Bruno Ieiri Ito; Sudip K. Batabyal; Kazuteru Nonomura; Chee Cheong Wong; Michael Grätzel; Subodh G. Mhaisalkar; Satoshi Uchida

2012-12-19T23:59:59.000Z

411

A compendium of the radioisotope thermoelectric generator transportation system and recent programmatic changes  

SciTech Connect

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.

Becker, D.L.; McCoy, J.C.

1996-03-01T23:59:59.000Z

412

HYDROGEOCHEM: A coupled model of HYDROlogic transport and GEOCHEMical equilibria in reactive multicomponent systems  

SciTech Connect

This report presents the development of a hydrogeochemical transport model for multicomponent systems. The model is designed for applications to proper hydrological setting, accommodation of complete suite of geochemical equilibrium processes, easy extension to deal with chemical kinetics, and least constraints of computer resources. The hydrological environment to which the model can be applied is the heterogeneous, anisotropic, saturated-unsaturated subsurface media under either transient or steady state flow conditions. The geochemical equilibrium processes included in the model are aqueous complexation, adsorption-desorption, ion exchange, precipitation-dissolution, redox, and acid-base reactions. To achieve the inclusion of the full complement of these geochemical processes, total analytical concentrations of all chemical components are chosen as the primary dependent variables in the hydrological transport equations. Attendant benefits of this choice are to make the extension of the model to deal with kinetics of adsorption-desorption, ion exchange, precipitation-dissolution, and redox relatively easy. To make the negative concentrations during the iteration between the hydrological transport and geochemical equilibrium least likely, an implicit form of transport equations are proposed. To alleviate severe constraints of computer resources in terms of central processing unit (CPU) time and CPU memory, various optional numerical schemes are incorporated in the model. The model consists of a hydrological transport module and geochemical equilibrium module. Both modules were thoroughly tested in code consistency and were found to yield plausible results. The model is verified with ten examples. 79 refs., 21 figs., 17 tabs.

Yeh, G.T.; Tripathi, V.S.

1990-11-01T23:59:59.000Z

413

A MATLAB-based interface for the beam-transport system of an AMS facility  

Science Journals Connector (OSTI)

Abstract In this paper we present a MATLAB code built to model the transport of a charged particle beam through the Accelerator Mass Spectrometry (AMS) facility located at the Centro Nacional de Aceleradores (CNA, Seville, Spain). We determine the beam transport through the optical system using the transfer matrix formalism in two different approaches (ray tracing and the beam-envelope approach) and describe it in terms of cross section size and emittance. The beam size results given by MATLAB are compared with the measured beam size in three of the four image points that the system has, obtaining a good agreement between them. This suggests that the first-order transfer matrix formalism is enough to simulate the optical behavior of the system. The present version of this interface enables the user to control, interact with and display a beam transport system. Parameters involved in the optics such as voltages applied to the lenses, terminal voltage and charge state of the selected ion can be modified using this interface, which gives great generality, as the optics behavior of the AMS system can be simulated for any ion species prior to operation.

J.M. Gómez-Guzmán; I. Gómez-Morilla; S.M. Enamorado-Báez; A.I. Moreno-Suárez; A.R. Pinto-Gómez

2013-01-01T23:59:59.000Z

414

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network (OSTI)

Market Potential of Electric Motor System in China. ChinaUSA Abstract Industrial electric motor systems consume more

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

415

Study on The Effect of Regenerative System on Power Type Relative Internal Efficiency of Nuclear Steam Turbine  

Science Journals Connector (OSTI)

Nuclear steam turbine use wet steam as working medium, which is unable to determine the enthalpy drop type relative internal efficiency through exhaust enthalpy of steam, but the power type relative internal efficiency avoids this question. This paper introduced the calculate method of power type relative internal efficience, and then took a 900MW nuclear steam turbine for example, calculated the power type relative internal efficiency when the factors of regenerative system are changed. The result shows that when the factors of regenerative system are changed in a large range, the power type relative internal efficiency is nearly changeless, so the effect of regenerative system on relative internal efficiency can be neglected. At last, the independence between relative internal efficiency and ideal cycle heat efficiency is calculated and analyzed.

Yong Li; Chao Wang

2012-01-01T23:59:59.000Z

416

Energy-Efficient Soft Real-Time CPU Scheduling for Mobile Multimedia Systems  

E-Print Network (OSTI)

, Urbana, IL 61801, USA {wyuan1, klara}@cs.uiuc.edu ABSTRACT This paper presents GRACE-OS, an energy modes, trading off performance for energy. For example, mobile processors on the market todayEnergy-Efficient Soft Real-Time CPU Scheduling for Mobile Multimedia Systems Wanghong Yuan, Klara

Adve, Sarita

417

EnergyEfficient Soft RealTime CPU Scheduling for Mobile Multimedia Systems  

E-Print Network (OSTI)

, Urbana, IL 61801, USA {wyuan1, klara}@cs.uiuc.edu ABSTRACT This paper presents GRACE­OS, an energy modes, trading o# performance for energy. For example, mobile processors on the market todayEnergy­Efficient Soft Real­Time CPU Scheduling for Mobile Multimedia Systems Wanghong Yuan, Klara

Nahrstedt, Klara

418

Improving Charging Efficiency with Workload Scheduling in Energy Harvesting Embedded Systems  

E-Print Network (OSTI)

University Syracuse, New York, 13244, USA {yzhan158, yage, qiqiu}@syr.edu ABSTRACT In energy harvestingImproving Charging Efficiency with Workload Scheduling in Energy Harvesting Embedded Systems Yukan in the electrical energy storage (EES) bank. How much energy can be stored is affected by many factors including

Qiu, Qinru

419

VigilNet: An Integrated Sensor Network System for Energy-Efficient Surveillance  

E-Print Network (OSTI)

.00 #12;Additional Key Words and Phrases: Sensor networks, Energy conservation, Tracking, Wireless 1VigilNet: An Integrated Sensor Network System for Energy-Efficient Surveillance Tian He, Sudha sensor networks, is of great practical importance for the military. Because of the energy constraints

He, Tian

420

Design and global optimization of high-efficiency solar thermal systems  

E-Print Network (OSTI)

, Massachusetts 02139, USA bermel@mit.edu Abstract: Solar thermal, thermoelectric, and thermophotovoltaic (TPVDesign and global optimization of high-efficiency solar thermal systems with tungsten cermets DavidDepartment of Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts

Soljaèiæ, Marin

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


421

Improved Power Grid Stability and Efficiency with a Building-Energy Cyber-Physical System  

E-Print Network (OSTI)

, or for sporadic reasons, for example a power plant goes offline unexpectedly (e.g., due to an earthquake or stagnant winds to propel wind turbines). Dur- ing an episode, the power grid operators must contend1 Improved Power Grid Stability and Efficiency with a Building-Energy Cyber-Physical System Mary

422

PRE-BUD: Prefetching for Energy-Efficient Parallel I/O Systems with Buffer Disks  

E-Print Network (OSTI)

of the total cost of ownership [Pinheiro and Bianchini 2004; Wang et al. 2008; Xie 2008]. Reducing the energy configuration is more cost-effective and energy-efficient than the first one. Finally, we quantitatively compare that PRE-BUD is able to reduce energy dissipation in parallel disk systems by up to 50 percent when

Qin, Xiao

423

Energy Savings with Energy-Efficient HVAC Systems in Commercial Buildings of Hong Kong  

E-Print Network (OSTI)

of the electricity in Hong Kong is consumed by commercial buildings, and heating, ventilation and air-conditioning (HVAC) is the largest end-user in such buildings, improving the efficiency of HVAC systems in commercial buildings, is the key measure to take in Hong...

Yang, J.; Chan, K.; Wu, X.

2006-01-01T23:59:59.000Z

424

Cilk: An Efficient Multithreaded Runtime System Robert D. Blumofe Christopher F. Joerg Bradley C. Kuszmaul  

E-Print Network (OSTI)

Cilk: An Efficient Multithreaded Runtime System Robert D. Blumofe Christopher F. Joerg Bradley C. Kuszmaul Charles E. Leiserson Keith H. Randall Yuli Zhou MIT Laboratory for Computer Science 545 Technology Fellowship. Keith Randall is supported in part by a Department of Defense NDSEG Fellowship. To appear

Cappello, Peter

425

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

E-Print Network (OSTI)

(Green House Gases) emissions [1]. Thus, the reduction and optimization of energy consumption are arising and green energy use in network infrastructure with the dual objective of minimizing energy consumptionEnergy Aware Paradigm for Energy Efficient ICT: a Systemic Approach Sergio Ricciardi Technical

Politècnica de Catalunya, Universitat

426

Factors Affecting the Efficiency of Carbon Monoxide Photoproduction in the St. Lawrence Estuarine System (Canada)  

Science Journals Connector (OSTI)

Factors Affecting the Efficiency of Carbon Monoxide Photoproduction in the St. Lawrence Estuarine System (Canada) ... The solar insolation-weighted mean apparent quantum yield of CO (?CO) decreased as much as fourfold with increasing salinity and showed a strong positive correlation with the dissolved organic carbon-specific absorption coefficient at 254 nm. ...

Yong Zhang; Huixiang Xie; Guohua Chen

2006-11-01T23:59:59.000Z

427

Ultra Efficient Combined Heat, Hydrogen, and Power System- Fact Sheet, 2015  

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

FuelCell Energy, Inc., in collaboration with Abbott Furnace Company, is developing a combined heat, hydrogen, and power (CHHP) system that utilizes reducing gas produced by a high-temperature fuel cell to directly replace hydrogen in 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 overall efficiency.

428

Electron transport modeling and energy filtering for efficient thermoelectric Mg2Si1?xSnx solid solutions  

Science Journals Connector (OSTI)

We present a comprehensive electron transport model to analyze thermoelectric properties of both n- and p-type bulk Mg2Si1?xSnx (0?x?1) solid solutions. A temperature-dependent multiparabolic bands model is used to describe the band structures of the alloys, and the transport properties are calculated using the linearized Boltzmann transport equations under the relaxation time approximation. A variety of experimental data from literature are fitted very well by this model and analyzed for further material optimization. Our analysis shows that the compositions of x = 0.6 to 0.7 exhibit the highest thermoelectric figure of merit zT among n-type Mg2Si1?xSnx in the midtemperature range 600 to 900 K due to both the high power factors achieved by the convergence of the two conduction bands and low electronic thermal conductivities. For the p-type materials, we find that the bipolar electronic thermal conductivity is a major factor limiting the figure of merit. Low Sn content (x?p-type materials due mainly to their lower bipolar thermal conductivities with larger band gaps. Finally, we propose that hot carrier energy filtering can be very useful for these alloys as it can simultaneously reduce the electronic thermal conductivity and enhance the power factor. A zT greater than 3 is possible for n-type Mg2Si0.4Sn0.6 (x = 0.6) at 700 K, if electrons with energies lower than 0.4 eV are effectively prevented from participating in transport.

Je-Hyeong Bahk; Zhixi Bian; Ali Shakouri

2014-02-05T23:59:59.000Z

429

Policy Research TRANSPORTATION  

E-Print Network (OSTI)

Policy Research TRANSPORTATION CENTER Thestate's transportation system is central to its ability movement of goods to maintain and enhance global economic competitiveness. An effective transportation, TTI has identified the following set of initial transportation issues which must be better understood

430

Development of a particle injection system for impurity transport study in KSTAR  

SciTech Connect

A solid particle injection system is developed for KSTAR. The system has a compact size, compatibility with a strong magnetic field and high vacuum environment, and the capability to inject a small amount of solid particles with a narrow injection angle. The target flight-distance of 10 cm has been achieved with a particle loss rate of less than 10%. Solid impurity particles such as tungsten and carbon will be injected by this system at the midplane in KSTAR. The impurity transport feature will be studied with a soft X-ray array, a vacuum ultra-violet diagnostic, and Stand Alone Non-Corona code.

Lee, H. Y.; Hong, Joohwan; Lee, Seung Hun; Jang, Siwon; Jang, Juhyeok; Jeon, Taemin; Park, Jae Sun; Choe, Wonho, E-mail: wchoe@kaist.ac.kr [Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea and Fusion Plasma Transport Research Center, Daejeon 305-701 (Korea, Republic of); Hong, Suk-Ho [National Fusion Research Institute, Daejeon 305-806 (Korea, Republic of)

2014-11-15T23:59:59.000Z

431

Road Transportable Analytical Laboratory (RTAL) system. Quarterly technical report, December 1992--February 1993  

SciTech Connect

The goal of this contractual effort is the development and demonstration of a Road Transportable Analytical Laboratory (RTAL) system to meet the unique needs of the Department of Energy (DOE) for rapid, accurate analysis of a wide variety of hazardous and radioactive contaminants in soil, groundwater, and surface waters. This laboratory system will be designed to provide the field and laboratory analytical equipment necessary to detect and quantify radionuclides, organics, heavy metals and other inorganics, and explosive materials. The planned laboratory system will consist of a set of individual laboratory modules deployable independently or as an interconnected group to meet each DOE site`s specific needs.

Not Available

1993-03-22T23:59:59.000Z

432

Innovative Techniques of Multiphase Flow in Pipeline System for Oil?Gas Gathering and Transportation with Energy?Saving and Emission?Reduction  

Science Journals Connector (OSTI)

Multiphase flow measurement desanding dehumidification and heat furnace are critical techniques for the oil and gas gathering and transportation which influnce intensively the energy?saving and emission?reduction in the petroleum industry. Some innovative techniques were developed for the first time by the present research team including an online recognation instrument of multiphase flow regime a water fraction instrument for multuphase flow a coiled tube desanding separator with low pressure loss and high efficiency a supersonic swirling natural gas dehumifier and a vacuum phase?change boiler. With an integration of the above techniques a new oil gas gathering and transpotation system was proposed which reduced the establishment of one metering station and several transfer stations compared with the tranditional system. The oil and gas mixture transpotation in single pipes was realized. The improved techniques were applied in the oilfields in China and promoted the productivity of the oilfields by low energy consumption low emissions high efficiency and great security.

Bofeng Bai; Liejin Guo; Shaojun Zhang; Ximin Zhang; Hanyang Gu

2010-01-01T23:59:59.000Z

433

Chemical Fixation of Carbon Dioxide Using a Green and Efficient Catalytic System Based on Sugarcane Bagasse—An Agricultural Waste  

Science Journals Connector (OSTI)

Chemical Fixation of Carbon Dioxide Using a Green and Efficient Catalytic System Based on Sugarcane Bagasse—An Agricultural Waste ... § Wisconsin

Wei Chen; Lin-xin Zhong; Xin-wen Peng; Run-cang Sun; Fa-chuang Lu

2014-11-17T23:59:59.000Z

434

Study of Energy and Demand Savings on a High Efficiency Hydraulic Pump System with Infinite Turn Down Technology (ITDT)  

E-Print Network (OSTI)

and demand savings between an injection molding machine retrofitted with the high efficiency hydraulic pump system or variable frequency drive will also be presented....

Sfeir, R. A.; Kanungo, A.; Liou, S.

2005-01-01T23:59:59.000Z

435

Structural Basis of Efficient Electron Transport between Photosynthetic Membrane Proteins and Plastocyanin in Spinach Revealed Using Nuclear Magnetic Resonance  

Science Journals Connector (OSTI)

...energy is converted into the chemical energy of ATP and NADPH, are essential for almost...Solubilized PSI and cyt b 6 f were prepared from market spinach as reported previously, with...PSI enables the efficient use of light energy. In the Pc-cyt b(6)f and Pc-PSI...

Takumi Ueda; Naoko Nomoto; Masamichi Koga; Hiroki Ogasa; Yuuta Ogawa; Masahiko Matsumoto; Pavlos Stampoulis; Koji Sode; Hiroaki Terasawa; Ichio Shimada

2012-10-02T23:59:59.000Z

436

Dynamic neutron scattering on incoherent systems using efficient resonance spin flip techniques  

SciTech Connect

We have performed numerical ray-tracing Monte-Carlo-simulations of incoherent dynamic neutron scattering experiments. We intend to optimize the efficiency of incoherent measurements depending on the fraction of neutrons scattered without and with spin flip at the sample. In addition to conventional spin echo, we have numerically and experimentally studied oscillating intensity techniques. The results point out the advantages of these different spin echo variants and are an important prerequisite for neutron resonance spin echo instruments like RESEDA (FRM II, Munich), to choose the most efficient technique depending on the scattering vector range and the properties of the sample system under study.

Häussler, Wolfgang [Heinz Maier-Leibnitz Zentrum, Technische Universität München, D-85748 Garching, Germany and Physik-Department E21, Technische Universität München, D-85748 Garching (Germany); Kredler, Lukas [Physik-Department E21, Technische Universität München, D-85748 Garching (Germany)

2014-05-15T23:59:59.000Z

437

Matrix Product State and mean field solutions for one-dimensional systems can be found efficiently  

E-Print Network (OSTI)

We consider the problem of approximating ground states of one-dimensional quantum systems within the two most common variational ansatzes, namely the mean field ansatz and Matrix Product States. We show that both for mean field and for Matrix Product States of fixed bond dimension, the optimal solutions can be found in a way which is provably efficient (i.e., scales polynomially). This implies that the corresponding variational methods can be in principle recast in a way which scales provably polynomially. Moreover, our findings imply that ground states of one-dimensional commuting Hamiltonians can be found efficiently.

Norbert Schuch; J. Ignacio Cirac

2010-07-19T23:59:59.000Z

438

IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 25, NO. 4, NOVEMBER 2010 1865 Impact of Energy Efficiency Incentives  

E-Print Network (OSTI)

IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 25, NO. 4, NOVEMBER 2010 1865 Impact of Energy Efficiency the implementation of energy efficiency poli- cies on the power distribution sector. To assess the outcome different energy efficiency levels required by the regulator. The results reveal that the introduction

Catholic University of Chile (Universidad Católica de Chile)

439

Cost Analysis of PEM Fuel Cell Systems for Transportation: September 30, 2005  

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

Subcontract Report Subcontract Report Cost Analysis of PEM Fuel Cell NREL/SR-560-39104 Systems for Transportation December 2005 September 30, 2005 E.J. Carlson, P. Kopf, J. Sinha, S. Sriramulu, and Y. Yang TIAX LLC Cambridge, Massachusetts NREL is operated by Midwest Research Institute ● Battelle Contract No. DE-AC36-99-GO10337 Cost Analysis of PEM Fuel Cell Systems for Transportation September 30, 2005 E.J. Carlson, P. Kopf, J. Sinha, S. Sriramulu, and Y. Yang TIAX LLC Cambridge, Massachusetts NREL Technical Monitor: K. Wipke Prepared under Subcontract No. KACX-5-44452-01 Subcontract Report NREL/SR-560-39104 December 2005 National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov Operated for the U.S. Department of Energy

440

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

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

new solid and liquid phase systems new solid and liquid phase systems for the containment, transport and delivery of hydrogen By Guido P. Pez Hydrogen Energy Infrastructure for Fuel Cell Vehicle Transportation Scenario A: Distributed H 2 from a Large Scale Plant (150-230 tonne/day) Large Scale H 2 Plant (300-800 psi H 2 ) H 2 Buffer Storage Tube Trailer Liquid H 2 Truck H 2 Pipeline Multi-vehicle filling stations Feedstock: N. gas, Coal, Biomass Pet. Coke, Resids. Future: Carbon sequestration Storage: Underground well? Output: Depends on the vehicle's H 2 storage technology Currently H 2 up to >6000 psi for 5000 psi tanks Scenario B: Hydrogen by a small scale reforming of pipeline natural gas and compression Natural Gas Pipeline Reformer Liquid H 2 Backup Compressor H 2 (>6000 psig) H 2 Production: 100-400 kg/day; 4-5Kg H

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


441

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network (OSTI)

50 compressed air system energy audits completed by Shanghai50 compressed air system energy audits completed by Shanghaiof compressed air energy audits conducted by the Shanghai

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

442

Evaluating the Interstate Highway Transportation System in West Africa: Recommendations for an Integrated Highway Network  

E-Print Network (OSTI)

is wasted when the projects do not succeed. An integrated interstate highway system could transform the West African region by providing a transportation network 3-4 that links all of the West African nations together. The project would be the biggest...% reported traveling on highways in other parts of the world. Respondents indicated traveling in the following areas: Taiwan, China, Mexico, Brazil, Argentina, and Suriname. Three respondents indicated general geographic areas: two indicated Asia and one...

Nyang, Lamin Bumi

2010-12-17T23:59:59.000Z

443

Safety analysis report for packaging, onsite, long-length contaminated equipment transport system  

SciTech Connect

This safety analysis report for packaging describes the components of the long-length contaminated equipment (LLCE) transport system (TS) and provides the analyses, evaluations, and associated operational controls necessary for the safe use of the LLCE TS on the Hanford Site. The LLCE TS will provide a standardized, comprehensive approach for the disposal of approximately 98% of LLCE scheduled to be removed from the 200 Area waste tanks.

McCormick, W.A.

1997-05-09T23:59:59.000Z

444

Efficient fourth order symplectic integrators for near-harmonic separable Hamiltonian systems  

E-Print Network (OSTI)

Efficient fourth order symplectic integrators are proposed for numerical integration of separable Hamiltonian systems H(p,q)=T(p)+V(q). Symmetric splitting coefficients with five to nine stages are obtained by higher order decomposition of the simple harmonic oscillator. The performance of the methods is evaluated for various Hamiltonian systems: Integration errors are compared to those of acclaimed integrators composed by S. Blanes et al. (2013), W. Kahan et al. (1999) and H. Yoshida (1990). Numerical tests indicate that the integrators obtained in this paper perform significantly better than previous integrators for common Hamiltonian systems.

Nielsen, Kristian Mads Egeris

2015-01-01T23:59:59.000Z

445

NA22 Model Cities Project - LL244T An Intelligent Transportation System-Based Radiation Alert and Detection System  

SciTech Connect

The purpose of this project was twofold: first, provide an understanding of the technical foundation and planning required for deployment of Intelligent Transportation System (ITS)-based system architectures for the protection of New York City from a terrorist attack using a vehicle-deployed nuclear device; second, work with stakeholders to develop mutual understanding of the technologies and tactics required for threat detection/identification and establish guidelines for designing operational systems and procedures. During the course of this project we interviewed and coordinated analysis with people from the New Jersey State Attorney General's office, the New Jersey State Police, the Port Authority of New York/New Jersey, the Counterterrorism Division of the New York City Police Department, the New Jersey Transit Authority, the State of New Jersey Department of Transportation, TRANSCOM and a number of contractors involved with state and federal intelligent transportation development and implementation. The basic system architecture is shown in the figure below. In an actual system deployment, radiation sensors would be co-located with existing ITS elements and the data will be sent to the Traffic Operations Center. A key element of successful system operation is the integration of vehicle data, such as license plate, EZ pass ID, vehicle type/color and radiation signature. A threat data base can also be implemented and utilized in cases where there is a suspect vehicle identified from other intelligence sources or a mobile detector system. Another key aspect of an operational architecture is the procedures used to verify the threat and plan interdiction. This was a major focus of our work and discussed later in detail. In support of the operational analysis, we developed a detailed traffic simulation model that is described extensively in the body of the report.

Peglow, S

2004-02-24T23:59:59.000Z

446

Advanced Systems of Efficient Use of Electrical Energy SURE (Smart Grid  

Open Energy Info (EERE)

Efficient Use of Electrical Energy SURE (Smart Grid Efficient Use of Electrical Energy SURE (Smart Grid Project) Jump to: navigation, search Project Name Advanced Systems of Efficient Use of Electrical Energy SURE Country Slovenia Coordinates 46.151241°, 14.995463° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":46.151241,"lon":14.995463,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

447

Quantum Monte Carlo for large chemical systems: Implementing efficient strategies for petascale platforms and beyond  

E-Print Network (OSTI)

Various strategies to implement efficiently QMC simulations for large chemical systems are presented. These include: i.) the introduction of an efficient algorithm to calculate the computationally expensive Slater matrices. This novel scheme is based on the use of the highly localized character of atomic Gaussian basis functions (not the molecular orbitals as usually done), ii.) the possibility of keeping the memory footprint minimal, iii.) the important enhancement of single-core performance when efficient optimization tools are employed, and iv.) the definition of a universal, dynamic, fault-tolerant, and load-balanced computational framework adapted to all kinds of computational platforms (massively parallel machines, clusters, or distributed grids). These strategies have been implemented in the QMC=Chem code developed at Toulouse and illustrated with numerical applications on small peptides of increasing sizes (158, 434, 1056 and 1731 electrons). Using 10k-80k computing cores of the Curie machine (GENCI-T...

Scemama, Anthony; Oseret, Emmanuel; Jalby, William

2012-01-01T23:59:59.000Z

448

Development of a solar receiver for a high-efficiency thermionic/thermoelectric conversion system  

SciTech Connect

Solar energy is one of the most promising energy resources on Earth and in space, because it is clean and inexhaustible. Therefore, we have been developing a solar-powered high-efficiency thermionic-thermoelectric conversion system which combines a thermionic converter (TIC) with a thermoelectric converter (TEC) to use thermal energy efficiently and to achieve high efficiency conversion. The TIC emitter must uniformly heat up to 1800 K. The TIC emitter can be heated using thermal radiation from a solar receiver maintained at a high temperature by concentrated solar irradiation. A cylindrical cavity-type solar receiver constructed from graphite was designed and heated in a vacuum by using the solar concentrator at Tohoku University. The maximum temperature of the solar receiver enclosed by a molybdenum cup reached 1965 K, which was sufficiently high to heat a TIC emitter using thermal radiation from the receiver. 4 refs., 6 figs., 1 tab.

Naito, H.; Kohsaka, Y.; Cooke, D.; Arashi, H. [Tohoku Univ., Aramaki (Japan)] [Tohoku Univ., Aramaki (Japan)

1996-10-01T23:59:59.000Z

449

Life-cycle assessment of diesel, natural gas and hydrogen fuel cell bus transportation systems  

Science Journals Connector (OSTI)

The Sustainable Transport Energy Programme (STEP) is an initiative of the Government of Western Australia, to explore hydrogen fuel cell technology as an alternative to the existing diesel and natural gas public transit infrastructure in Perth. This project includes three buses manufactured by DaimlerChrysler with Ballard fuel cell power sources operating in regular service alongside the existing natural gas and diesel bus fleets. The life-cycle assessment (LCA) of the fuel cell bus trial in Perth determines the overall environmental footprint and energy demand by studying all phases of the complete transportation system, including the hydrogen infrastructure, bus manufacturing, operation, and end-of-life disposal. The \\{LCAs\\} of the existing diesel and natural gas transportation systems are developed in parallel. The findings show that the trial is competitive with the diesel and natural gas bus systems in terms of global warming potential and eutrophication. Emissions that contribute to acidification and photochemical ozone are greater for the fuel cell buses. Scenario analysis quantifies the improvements that can be expected in future generations of fuel cell vehicles and shows that a reduction of greater than 50% is achievable in the greenhouse gas, photochemical ozone creation and primary energy demand impact categories.

Jamie Ally; Trevor Pryor

2007-01-01T23:59:59.000Z

450

THERMAL PERFORMANCE OF INSULATING WINDOW SYSTEMS  

E-Print Network (OSTI)

Efficient Use of Energy, New York (1975). Glaser, V.H.J. , "Energy Transport Control in Window Systems", Report ETR-1277-2, Stony Brook, New York, (

Selkowitz, Stephen E.

2011-01-01T23:59:59.000Z

451

Research and development of highly energy-efficient supermarket refrigeration systems. Volume 2. Supplemental laboratory testing  

SciTech Connect

The Supermarket Refrigeration System project was structured to investigate and develop a new, highly energy-efficient supermarket refrigeration system which features unequal, parallel compressors, microprocessor suction pressure control, and floating head pressure control. Energy savings are achieved because such a system is better able to match compressor capacity with the required refrigeration load. For this same reason, the unequal, parallel compressor system can operate at the lowest possible condenser pressure. The combined effect of highest possible suction pressure and lowest possible condensing pressure substantially increases the energy efficiency ratio (EER) of the refrigeration system. The test conditions included winter and spring ambient temperatures ranging from 8/sup 0/ to 70/sup 0/F, refrigerants R-12 and R-502 with corresponding evaporator temperatures of 20/sup 0/ and -20/sup 0/F, respectively, and variable refrigeration loads between 100,000 and 170,000 Btu/hr. Heat reclaim tests were performed with R-12 only. For the three sets of tests performed, R-12, R-12 with heat reclaim, and R-502, the highest system EER was achieved when the unequal, parallel compressor system was operated with microprocessor control and floating head control.

Toscano, W.M.; Walker, D.H.; Tetreault, R.D.

1983-06-01T23:59:59.000Z

452

Energy efficient control of HVAC systems with ice cold thermal energy storage  

Science Journals Connector (OSTI)

Abstract In heating, ventilation and air conditioning (HVAC) systems of medium/high cooling capacity, energy demands can be matched with the help of thermal energy storage (TES) systems. If properly designed, TES systems can reduce energy costs and consumption, equipment size and pollutant emissions. In order to design efficient control strategies for TES systems, we present a model-based approach with the aim of increasing the performance of HVAC systems with ice cold thermal energy storage (CTES). A simulation environment based on Matlab/Simulink® is developed, where thermal behaviour of the plant is analysed by a lumped formulation of the conservation equations. In particular, the ice CTES is modelled as a hybrid system, where the water phase transitions (solid–melting–liquid and liquid–freezing–solid) are described by combining continuous and discrete dynamics, thus considering both latent and sensible heat. Standard control strategies are compared with a non-linear model predictive control (NLMPC) approach. In the simulation examples model predictive control proves to be the best control solution for the efficient management of ice CTES systems.

Alessandro Beghi; Luca Cecchinato; Mirco Rampazzo; Francesco Simmini

2014-01-01T23:59:59.000Z

453

On the definition of exergy efficiencies for petroleum systems: Application to offshore oil and gas processing  

Science Journals Connector (OSTI)

Abstract Exergy-based efficiencies are measures of the thermodynamic perfection of systems and processes. A meaningful formulation of these performance criteria for petroleum systems is difficult because of (i) the high chemical exergy of hydrocarbons, (ii) the large variety of chemical components, and (iii) the differences in operating conditions between facilities. This work focuses on offshore processing plants, considering four oil platforms that differ by their working conditions and designs. Several approaches from the scientific literature for similar processes are presented and applied to the four cases. They showed a low sensitivity to performance improvements, gave inconsistent results, or favoured facilities operating under certain conditions. We suggest an alternative formulation, called the component-by-component exergy efficiency, which builds on the decomposition of the exergy flows at the level of the chemical compounds. It allows therefore for sound comparisons of separation systems, while it successfully evaluates their theoretical improvement potentials. The platform displaying the lowest efficiency (1.7%) is characterised by little pumping and compression works, at the opposite of the one displaying the highest performance (29.6%). A more realistic measure of the technical potential for improving these systems can be carried out by splitting further the exergy destruction into its avoidable and unavoidable parts.

Tuong-Van Nguyen; Mari Voldsund; Brian Elmegaard; Ivar Ståle Ertesvåg; Signe Kjelstrup

2014-01-01T23:59:59.000Z

454

Theory of ballistic transport through a 3D-1D-3D quantum system  

Science Journals Connector (OSTI)

Ballistic transport through a three-dimensional–one-dimensional–three-dimensional quantum system has been studied theoretically. Based on an exact quantum-mechanical formulation, the quantization of the conductance in units of 2e2/h of this vertical analog to the split-gate defined quantum channel in a two-dimensional electron gas has been proved. By taking into account the mode degeneracy in the lateral confined quantum pillar, multiple conductance plateaus, i.e., the conductance changes in steps of multiples of 2e2/h, are shown to appear in the quantum system.

Hongqi Xu

1993-09-15T23:59:59.000Z

455

Monitoring System Used to Optimize Compressed Air System Efficiency, Cut Costs  

E-Print Network (OSTI)

In 1994, Thomson Consumer Electronics (RCA), an international manufacturer of electronics equipment purchased a UtillTRACK® Monitoring System for a plant in Indianapolis, Indiana. The system monitored gas and electric meters, substations, main...

Holmes, W. A.

456

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

E-Print Network (OSTI)

tool for geothermal water loop heat pump systems, 9thInternational IEA Heat Pump Conference, Zürich, Switzerland,Performance of ground source heat pump system in a near-zero

Hong, Tainzhen

2010-01-01T23:59:59.000Z

457

Contol of integrated mechanical dehumidification and passive cooling systems to produce energy efficient comfort  

SciTech Connect

Detailed computer simulations validated by full scale testing indicate that roof pond type passive cooling systems can provide acceptable residential temperature conditions in all climates of the United States. Passive cooling systems as presently conceived, however, require complementary dehumidification to carry existing latent loads. A study is made of the relative dehumidification efficiencies of conventional air conditioners and an improved mechanical dehumidifier which utilizes sensible cooling recovery. The effects of dew point and dry bulb temperatures, controller set point and humidity band width, infiltration, and climate are evaluated. A simple dehumidifier sizing procedure is presented. Results indicate that the improved dehumidifiers are several times as efficient as conventional air conditioners under desired steady state room conditions. It is also shown that dehumidifier capacities at AHAM test conditions may be misleading if used for design purposes.

Doderer, E.; Marcus, D.; Hoffner, J.

1982-01-01T23:59:59.000Z

458

Analysis of space heating and domestic hot water systems for energy-efficient residential buildings  

SciTech Connect

An analysis of the best ways of meeting the space heating and domestic hot water (DHW) needs of new energy-efficient houses with very low requirements for space heat is provided. The DHW load is about equal to the space heating load in such houses in northern climates. The equipment options which should be considered are discussed, including new equipment recently introduced in the market. It is concluded that the first consideration in selecting systems for energy-efficient houses should be identification of the air moving needs of the house for heat distribution, heat storage, ventilation, and ventilative cooling. This is followed, in order, by selection of the most appropriate distribution system, the heating appliances and controls, and the preferred energy source, gas, oil, or electricity.

Dennehy, G

1983-04-01T23:59:59.000Z

459

LEDSGP/Transportation Toolkit/Strategies/Shift | Open Energy...  

Open Energy Info (EERE)

objectives by connecting with all forms of transit - motorized & non-motorized. Train or rail-based transit systems can be the most efficient form of passenger transport if...

460

An optimal penalty method for a hyperbolic system modeling the edge plasma transport in a tokamak  

Science Journals Connector (OSTI)

Abstract The penalization method is used to take account of obstacles, such as the limiter, in a tokamak. Because of the magnetic confinement of the plasma in a tokamak, the transport occurs essentially in the direction parallel to the magnetic field lines. We study a 1D nonlinear hyperbolic system as a simplified model of the plasma transport in the area close to the wall. A penalization which cuts the flux term of the momentum is studied. We show numerically that this penalization creates a Dirac measure at the plasma-limiter interface which prevents us from defining the transport term in the usual distribution sense. Hence, a new penalty method is proposed for this hyperbolic system. For this penalty method, an asymptotic expansion and numerical tests give an optimal rate of convergence without spurious boundary layer. Another two-fields penalization has also been implemented and the numerical convergence analysis when the penalization parameter tends to 0 reveals the presence of a boundary layer.

Philippe Angot; Thomas Auphan; Olivier Guès

2014-01-01T23:59:59.000Z

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


461

Application of Chebyshev Formalism to Identify Nonlinear Magnetic Field Components in Beam Transport Systems  

SciTech Connect

An experiment was conducted at Jefferson Lab's Continuous Electron Beam Accelerator Facility to develop a beam-based technique for characterizing the extent of the nonlinearity of the magnetic fields of a beam transport system. Horizontally and vertically oriented pairs of air-core kicker magnets were simultaneously driven at two different frequencies to provide a time-dependent transverse modulation of the beam orbit relative to the unperturbed reference orbit. Fourier decomposition of the position data at eight different points along the beamline was then used to measure the amplitude of these frequencies. For a purely linear transport system one expects to find solely the frequencies that were applied to the kickers with amplitudes that depend on the phase advance of the lattice. In the presence of nonlinear fields one expects to also find harmonics of the driving frequencies that depend on the order of the nonlinearity. Chebyshev polynomials and their unique properties allow one to directly quantify the magnitude of the nonlinearity with the minimum error. A calibration standard was developed using one of the sextupole magnets in a CEBAF beamline. The technique was then applied to a pair of Arc 1 dipoles and then to the magnets in the Transport Recombiner beamline to measure their multipole content as a function of transverse position within the magnets.

Michael Spata

2012-08-01T23:59:59.000Z

462

Energy Efficient Integration of Heat Pumps into Solar District Heating Systems with Seasonal Thermal Energy Storage  

Science Journals Connector (OSTI)

Abstract Solar district heating (SDH) with seasonal thermal energy storage (STES) is a technology to provide heat for space heating and domestic hot water preparation with a high fraction of renewable energy. In order to improve the efficiency of such systems heat pumps can be integrated. By preliminary studies it was discovered, that the integration of a heat pump does not always lead to improvements from an overall energy perspective, although the operation of the heat pump increases the efficiency of other components of the system e. g. the STES or the solar collectors. Thus the integration of heat pumps in SDH systems was investigated in detail. Usually, the heat pumps are integrated in such a way, that the STES is used as low temperature heat source. No other heat sources from the ambience are used and only that amount of energy consumed by the heat pump is additionally fed into the system. In the case of an electric driven heat pump, this is highly questionable concerning economic and CO2-emission aspects. Despite that fact the operation of the heat pump influences positively the performance of other components in the system e. g. the STES and makes them more efficient. If the primary energy consumption of the heat pump is lower than the energetic benefits of all other components, the integration makes sense from an energetic point of view. A detailed assessment has been carried out to evaluate the most promising system configurations for the integration of a heat pump. Based on this approach a system concept was developed in which the integration of the heat pump is energetically further improved compared to realised systems. By means of transient system simulations this concept was optimised with regard to the primary energy consumption. A parameter study of this new concept has been performed to identify the most sensitive parameters of the system. The main result and conclusion are that higher solar fractions and also higher primary energy savings can be achieved by SDH systems using heat pumps compared systems without heat pumps.

Roman Marx; Dan Bauer; Harald Drueck

2014-01-01T23:59:59.000Z

463

Efficient data exchange: Integrating a vector GIS with an object-oriented, 3-D visualization system  

SciTech Connect

A common problem encountered in Geographic Information System (GIS) modeling is the exchange of data between different software packages to best utilize the unique features of each package. This paper describes a project to integrate two systems through efficient data exchange. The first is a widely used GIS based on a relational data model. This system has a broad set of data input, processing, and output capabilities, but lacks three-dimensional (3-D) visualization and certain modeling functions. The second system is a specialized object-oriented package designed for 3-D visualization and modeling. Although this second system is useful for subsurface modeling and hazardous waste site characterization, it does not provide many of the, capabilities of a complete GIS. The system-integration project resulted in an easy-to-use program to transfer information between the systems, making many of the more complex conversion issues transparent to the user. The strengths of both systems are accessible, allowing the scientist more time to focus on analysis. This paper details the capabilities of the two systems, explains the technical issues associated with data exchange and how they were solved, and outlines an example analysis project that used the integrated systems.

Kuiper, J.; Ayers, A.; Johnson, R. [Argonne National Lab., IL (United States); Tolbert-Smith, M. [USDOE Germantown, Maryland (United States). Office of Program Integration

1996-03-01T23:59:59.000Z

464

Efficiency of a parabolic trough collector as a water heater system in Yucatán, Mexico  

Science Journals Connector (OSTI)

The performance of a parabolic trough collector (PTC) manufactured in Merida Yucatán was evaluated under the ANSI/ASHRAE 93-1986 standard. The water heating system for testing with a constant flow limited to a maximum temperature of 55 °C was built; thus the tests were at low temperatures. Using water as working fluid it was found that the maximum efficiency of the collector was 5.43% with a flow rate of 0.022?kg/s at a direct solar irradiance with incidence angle 0°. The evaluation methodology and design of the system for testing the collector is reported in this paper.

N. Rosado Hau; M. A. Escalante Soberanis

2011-01-01T23:59:59.000Z

465

Bioinspired Approach to Multienzyme Cascade System Construction for Efficient Carbon Dioxide Reduction  

Science Journals Connector (OSTI)

Bioinspired Approach to Multienzyme Cascade System Construction for Efficient Carbon Dioxide Reduction ... In our previous studies, spatially separated enzymatic systems, mimicking natural enzyme organization, were developed by using several kinds of organic–inorganic hybrid microcapsules. ... Briefly, immobilized-enzyme-containing solution (1 mL, 50 mM PBS, pH 7.0) was bubbled with CO2 gas for 0.5 h, and then NADH solution (1 mL, 50 mM PBS, pH 7.0) was added to initiate the reaction. ...

Xiaoli Wang; Zheng Li; Jiafu Shi; Hong Wu; Zhongyi Jiang; Wenyan Zhang; Xiaokai Song; Qinghong Ai

2014-02-12T23:59:59.000Z

466

Alternative Fuels Data Center: Multi-Modal Transportation  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Multi-Modal Multi-Modal Transportation to someone by E-mail Share Alternative Fuels Data Center: Multi-Modal Transportation on Facebook Tweet about Alternative Fuels Data Center: Multi-Modal Transportation on Twitter Bookmark Alternative Fuels Data Center: Multi-Modal Transportation on Google Bookmark Alternative Fuels Data Center: Multi-Modal Transportation on Delicious Rank Alternative Fuels Data Center: Multi-Modal Transportation on Digg Find More places to share Alternative Fuels Data Center: Multi-Modal Transportation on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Fleet Rightsizing System Efficiency Ridesharing Mass Transit Active Transit Multi-Modal Transportation Telework Multi-Modal Transportation Using multiple modes of transportation is the best approach for some

467

Technology transition in the national air transportation system : market failure and game theoretic analysis with application to ADS-B  

E-Print Network (OSTI)

This research analyzes the problem of technology transition in the national air transportation system, focusing on the implementation of Automatic Dependent Surveillance-Broadcast (ADS-B). ADS-B is a key technology in the ...

Hu, Xiaojie

2008-01-01T23:59:59.000Z

468

Momentum transport processes in the stratiform regions of mesoscale convective systems over the western Pacific warm pool  

E-Print Network (OSTI)

Momentum transport by the stratiform components of mesoscale convective systems (MCSs) during the Tropical Ocean–Global Atmosphere Coupled Ocean–Atmosphere Response Experiment in December 1992 is investigated using a ...

Mechem, David B.; Chen, Shuyi S.; Houze, Robert A. Jr.

2006-04-01T23:59:59.000Z

469

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

E-Print Network (OSTI)

as other types of air source heat pumps, VRF systems needconventional packaged air source heat pumps. Typical GSHPis basically an air source heat pump), especially when the

Hong, Tainzhen

2010-01-01T23:59:59.000Z

470

Customer system efficiency improvement assessment: Supply curves for transmission and distribution conservation options  

SciTech Connect

This report documents the results of Task 6 in the Customer System Efficiency Improvement (CSEI) Assessment Project. A principal objective of this project is to assess the potential for energy conservation in the transmission and distribution (TandD) systems of electric utilities in the BPA service area. The scope of this assessment covers BPA customers in the Pacific Northwest region and all non-federal TandD systems, including those that currently place no load on the BPA system. Supply curves were developed to describe the conservation resource potentially available from TandD-system efficiency improvements. These supply curves relate the levelized cost of upgrading existing equipment to the estimated amount of energy saved. Stated in this form, the resource represented by TandD loss reductions can be compared with other conservation options and regional electrical generation resources to determine the most cost-effective method of supplying power to the Pacific Northwest. The development of the supply curves required data acquisition and methodology development that are also described in this report. 11 refs., 11 figs., 16 tabs.

Tepel, R.C.; Callaway, J.W.; De Steese, J.G.

1987-11-01T23:59:59.000Z

471

Performance investigation of a cogeneration plant with the efficient and compact heat recovery system  

Science Journals Connector (OSTI)

This paper presents the performance investigation of a cogeneration plant equipped with an efficient waste heat recovery system. The proposed cogeneration system produces four types of useful energy namely: (i) electricity (ii) steam (iii) cooling and (iv) dehumidification. The proposed plant comprises a Capstone C30 micro-turbine which generates 24 kW of electricity a compact and efficient waste heat recovery system and a host of waste heat activated devices namely (i) a steam generator (ii) an absorption chiller (iii) an adsorption chiller and (iv) a multi-bed desiccant dehumidifier. The numerical analysis for the host of waste heat recovery system and thermally activated devices using FORTRAN power station linked to powerful IMSL library is performed to investigate the performance of the overall system. A set of experiments both part load and full load of micro-turbine is conducted to examine the electricity generation and the exhaust gas temperature. It is observed that energy utilization factor (EUF) could achieve as high as 70% while Fuel Energy Saving Ratio (FESR) is found to be 28%.

2012-01-01T23:59:59.000Z

472

System efficiency analysis for high power solid state radio frequency transmitter  

SciTech Connect

This paper examines some important relationships, related with the system efficiency, for very high power, radio frequency solid-state transmitter; incorporating multiple solid-state power amplifier modules, power combiners, dividers, couplers, and control/interlock hardware. In particular, the characterization of such transmitters, at the component as well as the system level, is discussed. The analysis for studying the influence of the amplitude and phase imbalance, on useful performance parameters like system efficiency and power distribution is performed. This analysis is based on a scattering parameter model. This model serves as a template for fine-tuning the results, with the help of a system level simulator. For experimental study, this approach is applied to a recently designed modular and scalable solid-state transmitter, operating at the centre frequency of 505.8?MHz and capable of delivering a continuous power of 75 kW. Such first time presented, system level study and experimental characterization for the real time operation will be useful for the high power solid-state amplifier designs, deployed in particle accelerators.

Jain, Akhilesh, E-mail: ajain@rrcat.gov.in; Sharma, D. K.; Gupta, A. K.; Lad, M. R.; Hannurkar, P. R. [RF Systems Division, Raja Ramanna Centre for Advanced Technology, Indore 452013 (India)] [RF Systems Division, Raja Ramanna Centre for Advanced Technology, Indore 452013 (India); Pathak, S. K. [Electromagnetics and Microwave Engineering, Institute for Plasma Research, Gandhinagar 382 428 (India)] [Electromagnetics and Microwave Engineering, Institute for Plasma Research, Gandhinagar 382 428 (India)

2014-02-15T23:59:59.000Z

473

Long Length Contaminated Equipment Retrieval System Receiver Trailer and Transport Trailer Operations and Maintenance Manual  

SciTech Connect

A system to accommodate the removal of long-length contaminated equipment (LLCE) from Hanford underground radioactive waste storage tanks was designed, procured, and demonstrated, via a project activity during the 1990s. The system is the Long Length Contaminated Equipment Removal System (LLCERS). LLCERS will be maintained and operated by Tank Farms Engineering and Operations organizations and other varied projects having a need for the system. The responsibility for the operation and maintenance of the LLCERS Receiver Trailer (RT) and Transport Trailer (TT) resides with the RPP Characterization Project Operations organization. The purpose of this document is to provide vendor supplied operating and maintenance (O & M) information for the RT and TT in a readily retrievable form. This information is provided this way instead of in a vendor information (VI) file to maintain configuration control of the operations baseline as described in RPP-6085, ''Configuration Management Plan for Long Length Contaminated Equipment Receiver and Transport Trailers''. Additional Operations Baseline documents are identified in RPP-6085.

DALE, R.N.

2000-05-01T23:59:59.000Z

474

A survey of techniques for improving energy efficiency in embedded computing systems  

Science Journals Connector (OSTI)

Recent technological advances have greatly improved the performance and features of embedded systems. With the number of just mobile devices now reaching nearly equal to the population of Earth, embedded systems have truly become ubiquitous. These trends, however, have also made the task of managing their power consumption extremely challenging. In recent years, several techniques have been proposed to address this issue. In this paper, we survey the techniques for managing power consumption of embedded systems. We discuss the need of power management and provide a classification of the techniques on several important parameters to highlight their similarities and differences. This paper is intended to help the researchers and application-developers in gaining insights into the working of power management techniques and designing even more efficient high-performance embedded systems of tomorrow.

Sparsh Mittal

2014-01-01T23:59:59.000Z

475

Maglev vehicles and superconductor technology: Integration of high-speed ground transportation into the air travel system  

SciTech Connect

This study was undertaken to (1) evaluate the potential contribution of high-temperature superconductors (HTSCs) to the technical and economic feasibility of magnetically levitated (maglev) vehicles, (2) determine the status of maglev transportation research in the United States and abroad, (3) identify the likelihood of a significant transportation market for high-speed maglev vehicles, and (4) provide a preliminary assessment of the potential energy and economic benefits of maglev systems. HTSCs should be considered as an enhancing, rather than an enabling, development for maglev transportation because they should improve reliability and reduce energy and maintenance costs. Superconducting maglev transportation technologies were developed in the United States in the late 1960s and early 1970s. Federal support was withdrawn in 1975, but major maglev transportation programs were continued in Japan and West Germany, where full-scale prototypes now carry passengers at speeds of 250 mi/h in demonstration runs. Maglev systems are generally viewed as very-high-speed train systems, but this study shows that the potential market for maglev technology as a train system, e.g., from one downtown to another, is limited. Rather, aircraft and maglev vehicles should be seen as complementing rather than competing transportation systems. If maglev systems were integrated into major hub airport operations, they could become economical in many relatively high-density US corridors. Air traffic congestion and associated noise and pollutant emissions around airports would also be reduced. 68 refs., 26 figs., 16 tabs.

Johnson, L.R.; Rote, D.M.; Hull, J.R.; Coffey, H.T.; Daley, J.G.; Giese, R.F.

1989-04-01T23:59:59.000Z

476

Transportation Emergency Preparedness Program (TEPP) | Department of Energy  

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

Transportation Emergency Preparedness Program (TEPP) Transportation Emergency Preparedness Program (TEPP) Transportation Emergency Preparedness Program (TEPP) In an effort to address responder concerns, the Department retooled its approach to emergency responder preparedness and implemented the more simplified and responder-friendly Transportation Emergency Preparedness Program (TEPP). TEPP is a component of the overall comprehensive emergency management system established by DOE Order (DOE O) 151.1, Comprehensive Emergency Management System. TEPP integrates a basic approach to transportation emergency planning and preparedness activities under a single program with the goal to ensure DOE, its operating contractors, and state, tribal, and local emergency responders are prepared to respond promptly, efficiently, and effectively to accidents involving DOE

477

Cost Effective, High Efficiency Integrated Systems Approach To Auxiliary Electric Motors  

SciTech Connect

The CARAT program, carried out by Kinetic Art & Technology Corporation (KAT), has been one of the most commercially successful KAT R&D programs to date. Based on previous development of its technology, KAT designed, constructed and tested a highly efficient motor and controller system under this CARAT program with supplemental commercial funding. Throughout this CARAT effort, the technical objectives have been refined and refocused. Some objectives have been greatly expanded, while others have been minimized. The determining factor in all decisions to refocus the objectives was the commercial need, primarily the needs of KAT manufacturing partners. Several companies are employing the resulting CARAT motor and controller designs in prototypes for commercial products. Two of these companies have committed to providing cost share in order to facilitate the development. One of these companies is a major manufacturing company developing a revolutionary new family of products requiring the ultra-high system efficiency achievable by the KAT motor and controller technologies (known as Segmented ElectroMagnetic Array, or SEMA technology). Another company requires the high efficiency, quiet operation, and control characteristics afforded by the same basic motor and controller for an advanced air filtration product. The combined annual production requirement projected by these two companies exceeds one million units by 2005.

Roy Kessinger; Kanchan Angal; Steve Brewer; Steve Kraihanzel; Lenny Schrank; Jason Wolf

2003-07-15T23:59:59.000Z

478

Cost Effective, High Efficiency Integrated Systems Approach to Auxilliary Electric Motors  

SciTech Connect

The CARAT program, carried out by Kinetic Art & Technology Corporation (KAT), has been one of the most commercially successful KAT R&D programs to date. Based on previous development of its technology, KAT designed, constructed and tested a highly efficient motor and controller system under this CARAT program with supplemental commercial funding. Throughout this CARAT effort, the technical objectives have been refined and refocused. Some objectives have been greatly expanded, while others have been minimized. The determining factor in all decisions to refocus the objectives was the commercial need, primarily the needs of KAT manufacturing partners. Several companies are employing the resulting CARAT motor and controller designs in prototypes for commercial products. Two of these companies have committed to providing cost share in order to facilitate the development. One of these companies is a major manufacturing company developing a revolutionary new family of products requiring the ultra-high system efficiency achievable by the KAT motor and controller technologies (known as Segmented ElectroMagnetic Array, or SEMA technology). Another company requires the high efficiency, quiet operation, and control characteristics afforded by the same basic motor and controller for an advanced air filtration product. The combined annual production requirement projected by these two companies exceeds one million units by 2005.

Roy Kessinger Jr.; Keith Seymour; Kanchan Angal; Jason Wolf; Steve Brewer; Leonard Schrank

2003-09-26T23:59:59.000Z

479

Thermal transport barrier in heliotron-type devices (Large Helical Device and Compact Helical System)  

Science Journals Connector (OSTI)

In the discharges of the Large Helical Device [O. Motojima et al. Proceedings of the 16th Conference on Fusion Energy Montreal 1996 (International Atomic Energy Agency Vienna 1997) Vol. 3 p. 437] a significant enhancement of the energy confinement has been achieved with an edge thermal transport barrier which exhibits a sharp gradient at the edge. Key features associated with the barrier are quite different from those seen in tokamaks (i) almost no change in particle (including impurity) transport (ii) a gradual formation of the barrier (iii) a very high ratio of the edge temperature to the average temperature (iv) no edge relaxation phenomenon. In the electron cyclotron heating(ECH) heated discharges in the Compact Helical System [K. Matsuoka et al. in Proceedings of the 12th International Conference on Plasma Physics and Controlled Nuclear Fusion Research Nice France 1988 (International Atomic Energy Agency Vienna 1989) Vol. 2 p. 411] the internal electron transport barrier has been observed which enhances the central electron temperature significantly. High shear of the radial electric field appears to suppress the turbulence in the core region and enhance the electron confinement there.

N. Ohyabu; A. Fujisawa; N. Ashikawa; P. deVries; M. Emoto; H. Funaba; M. Goto; Y. Hamada; H. Iguchi; K. Ida; K. Itoh; M. Isobe; H. Idei; N. Inoue; K. Ikeda; S. Kado; S. Kubo; R. Kumazawa; K. Khlopenkov; O. Kaneko; K. Kawahata; A. Komori; T. Kobuchi; S. Lee; Y. Liang; T. Minami; J. Miyazawa; S. Masuzaki; K. Matsuoka; T. Morisaki; S. Morita; S. Murakami; T. Mutoh; S. Muto; K. Narihara; Y. Nagayama; Y. Nakamura; H. Nakanishi; K. Nishimura; S. Nishimura; N. Noda; T. Notake; S. Okamura; S. Ohdachi; K. Ohkubo; Y. Oka; M. Osakabe; T. Ozaki; B. J. Peterson; R. O. Pavlichenko; A. Sagara; S. Sakakibara; R. Sakamoto; M. Sasao; H. Sanuki; K. Saito; M. Sato; T. Seki; A. Shimizu; T. Shimozuma; M. Shoji; H. Suzuki; S. Sudo; H. Sasao; Y. Takeiri; K. Tanaka; K. Toi; T. Tokuzawa; K. Tsumori; K. Tsuzuki; N. Tamura; Y. Torii; I. Yamada; H. Yamada; S. Yamaguchi; K. Yamazaki; M. Yokoyama; Y. Yoshimura; S. Yamamoto; K. Y. Watanabe; T. Watanabe; T. Watari; O. Motojima; M. Fujiwara

2000-01-01T23:59:59.000Z

480

Economic analysis of exergy efficiency based control strategy for geothermal district heating system  

Science Journals Connector (OSTI)

Abstract In this study, the exergy efficiency based control strategy (ExEBCS) for exergy efficiency maximization in geothermal district heating systems (GDHSs) is economically evaluated. As a real case study, the Afyon GDHS in the city of Afyonkarahisar/Turkey is considered. Its actual thermal data as of average weekly data are collected in heating seasons during the period 2006–2010 for artificial neural network (ANN) modeling. The ANN modeling of the Afyon GDHS is used as a test system to demonstrate the effectiveness and economic impact of the ExEBCS under various operating conditions. Then, the ExEBCS is evaluated economically in case of application to real Afyon GDHS of the ExEBCS. The results show that the initial cost for the ExEBCS is more expensive than that for the old one by 6.33 kUS$/year as a result of replacing automatic controller. The saving in heat production makes the ExEBCS profitable by up to 7% of annual energy saving as a result of the increase in the heat production by 88% when the control system is operated. This results in a short payback period of 3.8 years. This study confirms that the use of ExEBCS in district heating systems (especially GDHS) is quite suitable.

Ali Keçeba?; ?smail Yabanova

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "transportation system efficiency" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Energy Efficiency of large Cryogenic Systems: the LHC Case and Beyond  

E-Print Network (OSTI)

Research infrastructures for high-energy and nuclear physics, nuclear fusion and production of high magnetic fields are increasingly based on applied superconductivity and associated cryogenics in their quest for scientific breakthroughs at affordable capital and operation costs, a condition for their acceptance and sustained funding by society. The thermodynamic penalty for operating at low temperature makes energy efficiency a key requirement for their large cryogenic systems, from conceptual design to procurement, construction and operation. Meeting this requirement takes a combined approach on several fronts in parallel: management of heat loads and sizing of cooling duties, distribution of cooling power matching the needs of the superconducting devices, efficient production of refrigeration, optimal control resting on precise instrumentation and diagnostics, as well as a targeted industrial procurement policy. The case of the Large Hadron Collider (LHC) at CERN is presented. Potential improvements for fu...

Claudet, S; Ferlin, G; Lebrun, P; Tavian, L; Wagner, U

2013-01-01T23:59:59.000Z

482

An Efficient LED System-in-Module for General Lighting Applications  

SciTech Connect

The objective of the project was to realize an LED-based lighting technology platform for general illumination, starting with LED chips, and integrating the necessary technologies to make compact, user-friendly, high-efficiency, energy-saving sources of controlled white (or variable-colored) light. The project is to build the system around the LEDs, and not to work on the LEDs themselves, in order that working products can be introduced soon after the LEDs reach suitable efficiency for mass-production of high-power light sources for general illumination. Because the light sources are intended for general illumination, color must be accurately maintained, requiring feedback control in the electronics. The project objective has been realized and screw base demonstrators, based on the technology developed in the project, have been built.

None

2008-09-14T23:59:59.000Z

483

Reversible Bending Fatigue Test System for Investigating Vibration Integrity of Spent Nuclear Fuel during Transportation  

SciTech Connect

Transportation packages for spent nuclear fuel (SNF) must meet safety requirements under normal and accident conditions as specified by federal regulations. During transportation, SNF experiences unique conditions and challenges to cladding integrity due to the vibrational and impact loading during road or rail shipment. Oak Ridge National Laboratory (ORNL) has been developing testing capabilities that can be used to improve the understanding of the impacts on SNF integrity due to vibration loading, especially for high burn-up SNF in normal transportation operation conditions. This information can be used to meet the nuclear industry and U.S. Nuclear Regulatory Commission needs in the area of safety and security of spent nuclear fuel storage and transport operations. The ORNL developed test system can perform reversible-bending fatigue testing to evaluate both the static and dynamic mechanical response of SNF rods under simulated loads. The testing apparatus is also designed to meet the challenges of hot-cell operation, including remote installation and detachment of the SNF test specimen, in-situ test specimen deformation measurement, and implementation of a driving system suitable for use in a hot cell. The system contains a U-frame set-up equipped with uniquely designed grip rigs, to protect SNF rod and to ensure valid test results, and use of 3 specially designed LVDTs to obtain the in-situ curvature measurement. A variety of surrogate test rods have been used to develop and calibrate the test system as well as in performing a series of systematic cyclic fatigue tests. The surrogate rods include stainless steel (SS) cladding, SS cladding with cast epoxy, and SS cladding with alumina pellets inserts simulating fuel pellets. Testing to date has shown that the interface bonding between the SS cladding and the alumina pellets has a significant impact on the bending response of the test rods as well as their fatigue strength. The failure behaviors observed from tested surrogate rods provides a fundamental understanding of the underlying failure mechanisms of the SNF surrogate rod under vibration which has not been achieved previously. The newly developed device is scheduled to be installed in the hot-cell in summer 2013 to test high burnup SNF.

Wang, Jy-An John [ORNL] [ORNL; Wang, Hong [ORNL] [ORNL; Bevard, Bruce Balkcom [ORNL] [ORNL; Howard, Rob L [ORNL] [ORNL; Flanagan, Michelle [U.S. Nuclear Regulatory Commission] [U.S. Nuclear Regulatory Commission

2013-01-01T23:59:59.000Z

484

Modelling transport fuel demand  

Science Journals Connector (OSTI)

Transport fuels account for an increasing share of oil ... interest to study the economics of the transport fuel market and thereby to evaluate the efficiency of the price mechanism as an instrument of policy in ...

Thomas Sterner; Carol A. Dahl

1992-01-01T23:59:59.000Z

485

Joint System Prognostics For Increased Efficiency And Risk Mitigation In Advanced Nuclear Reactor Instrumentation and Control  

SciTech Connect

The science of prognostics is analogous to a doctor who, based on a set of symptoms and patient tests, assesses a probable cause, the risk to the patient, and a course of action for recovery. While traditional prognostics research has focused on the aspect of hydraulic and mechanical systems and associated failures, this project will take a joint view in focusing not only on the digital I&C aspect of reliability and risk, but also on the risks associated with the human element. Model development will not only include an approximation of the control system physical degradation but also on human performance degradation. Thus the goal of the prognostic system is to evaluate control room operation; to identify and potentially take action when performance degradation reduces plant efficiency, reliability or safety.

Donald D. Dudenhoeffer; Tuan Q. Tran; Ronald L. Boring; Bruce P. Hallbert

2006-08-01T23:59:59.000Z

486

Energy-efficient heat recovery systems for air conditioning of indoor swimming pools  

SciTech Connect

Analysis of a conventional air-conditioning system for indoor swimming pools during the summer season is presented. The analysis showed that the cooling load is characterized by a large latent heat fraction. As a result, a reheating process must be used downstream of the cooling coil to achieve the proper design comfort condition in the pool area. This, in turn, increases the energy requirement per unit cooling load of the pool. Two heat recovery systems are proposed to reduce this energy. In the first system, ambient air is used for the reheating process in an air-to-air heat exchanger. In the second system, mixed air--recirculated and ambient air--is used for the reheating process. Heat recovery efficiency is defined as an index of the energy savings resulting from the use of the heat recovery system compared to that of a conventional air-conditioning system. At a wide range of ambient conditions it is found that the energy savings could be up to 70% of the energy required to operate a conventional air-conditioning system. A parametric study was carried out to size the air-to-air heat exchanger associated with these heat recovery systems, and the results showed that a heat exchanger having an effectiveness of 0.5 would give satisfactory results. The proposed heat recovery systems are also compared to the case of reheating using the heat rejection from the condenser of the refrigeration machine. The comparison showed that the proposed systems save more energy than reheating using the condenser heat. A typical case study is given to demonstrate the savings in energy consumption when these systems are used.

Elsayed, M.M.; El-Refaee, M.M. [Kuwait Univ., Safat (Kuwait). Mechanical Engineering Dept.; Borhan, Y.A. [Gulf Engineering Co., Safat (Kuwait)

1997-12-31T23:59:59.000Z

487

Optimizing the parameters of a system for pulsed pneumatic transportation of ash from electric precipitators at thermal power stations and putting this system into operation  

Science Journals Connector (OSTI)

Results from analysis of the effect of changes in the ash layer structure on the layer’s physical parameters are presented. Principles of designing a system for pneumatic transportation of ash in a pulsed mode...

V. K. Konovalov; O. V. Yashkin; V. V. Ermakov

2009-05-01T23:59:59.000Z

488

Development of a structural health monitoring system for the life assessment of critical transportation infrastructure.  

SciTech Connect

Recent structural failures such as the I-35W Mississippi River Bridge in Minnesota have underscored the urgent need for improved methods and procedures for evaluating our aging transportation infrastructure. This research seeks to develop a basis for a Structural Health Monitoring (SHM) system to provide quantitative information related to the structural integrity of metallic structures to make appropriate management decisions and ensuring public safety. This research employs advanced structural analysis and nondestructive testing (NDT) methods for an accurate fatigue analysis. Metal railroad bridges in New Mexico will be the focus since many of these structures are over 100 years old and classified as fracture-critical. The term fracture-critical indicates that failure of a single component may result in complete collapse of the structure such as the one experienced by the I-35W Bridge. Failure may originate from sources such as loss of section due to corrosion or cracking caused by fatigue loading. Because standard inspection practice is primarily visual, these types of defects can go undetected due to oversight, lack of access to critical areas, or, in riveted members, hidden defects that are beneath fasteners or connection angles. Another issue is that it is difficult to determine the fatigue damage that a structure has experienced and the rate at which damage is accumulating due to uncertain history and load distribution in supporting members. A SHM system has several advantages that can overcome these limitations. SHM allows critical areas of the structure to be monitored more quantitatively under actual loading. The research needed to apply SHM to metallic structures was performed and a case study was carried out to show the potential of SHM-driven fatigue evaluation to assess the condition of critical transportation infrastructure and to guide inspectors to potential problem areas. This project combines the expertise in transportation infrastructure at New Mexico State University with the expertise at Sandia National Laboratories in the emerging field of SHM.

Roach, Dennis Patrick; Jauregui, David Villegas (New Mexico State University, Las Cruces, NM); Daumueller, Andrew Nicholas (New Mexico State University, Las Cruces, NM)

2012-02-01T23:59:59.000Z

489

The Influence of Morphology on the Charge Transport in Two-Phase Disordered Organic Systems  

E-Print Network (OSTI)

In this work we use a three-dimensional Pauli master equation to investigate the charge carrier mobility of a two-phase system, which can mimic donor-acceptor and amorphous- crystalline bulk heterojunctions. Our approach can be separated into two parts: the morphology generation and the charge transport modeling in the generated blend. The morphology part is based on a Monte Carlo simulation of binary mixtures (donor/acceptor). The second part is carried out by numerically solving the steady-state Pauli master equation. By taking the energetic disorder of each phase, their energy offset and domain morphology into consideration, we show that the carrier mobility can have a significant different behavior when compared to a one-phase system. When the energy offset is non-zero, we show that the mobility electric field dependence switches from negative to positive at a threshold field proportional to the energy offset. Additionally, the influence of morphology, through the domain size and the interfacial roughness parameters, on the transport was also investigated.

Cristiano F. Woellner; Leonardo D. Machado; Pedro A. S. Autreto; Jose A. Freire; Douglas S. Galvao

2015-01-07T23:59:59.000Z

490

Organic acid transport through a partially saturated liner system beneath a landfill  

Science Journals Connector (OSTI)

Abstract A one-dimensional model was developed to investigate the transport of organic acids (commonly found in landfill leachate) through a partially saturated composite liner system beneath a landfill. Specific attention was paid to the influence of water content distribution on aqueous-phase diffusion process. Composite liner system was investigated, which was consisted of a geomembrane and a compacted clay liner underlain by three kinds of attenuation layer: sand layer, sandy clay loam layer, and clay layer. Volumetric water content profile in soil layers was obtained by Van Genuchten model, and the Millington and Quirk model was employed to describe the non-linear relationship between volumetric water content and diffusion coefficient. Three cases were analyzed and compared, i.e., totally saturated condition, unsaturated condition without considering unsaturated diffusion model, and unsaturated condition considering unsaturated diffusion model. The numerical results show that the unsaturated sand attenuation layer could serve as excellent diffusion barrier to organic contaminant due to its low water retention capacity. When the dependence of diffusion coefficient on volumetric water content is sufficiently considered, the contaminant flux decreases significantly in all the three kinds of attenuation layer. Unsaturated diffusion model capturing the relationship between water content and diffusion coefficient enables a more reasonable prediction of contaminant transport and distribution in soils.

Tingfa Liu; Liming Hu

2014-01-01T23:59:59.000Z

491

Designing Energy Efficient Communication Runtime Systems for Data Centric Programming Models  

SciTech Connect

The insatiable demand of high performance computing is being driven by the most computationally intensive applications such as computational chemistry, climate modeling, nuclear physics, etc. The last couple of decades have observed a tremendous rise in supercomputers with architectures ranging from traditional clusters to system-on-a-chip in order to achieve the petaflop computing barrier. However, with advent of petaflop-plus computing, we have ushered in an era where power efficient system software stack is imperative for execution on exascale systems and beyond. At the same time, computationally intensive applications are exploring programming models beyond traditional message passing, as a combination of Partitioned Global Address Space (PGAS) languages and libraries, providing one-sided communication paradigm with put, get and accumulate primitives. To support the PGAS models, it is critical to design power efficient and high performance one-sided communication runtime system. In this paper, we design and implement PASCoL, a high performance power aware one-sided communication library using Aggregate Remote Memory Copy Interface (ARMCI), the communication runtime system of Global Arrays. For various communication primitives provided by ARMCI, we study the impact of Dynamic Voltage/Frequency Scaling (DVFS) and a combination of interrupt (blocking)/polling based mechanisms provided by most modern interconnects. We implement our design and evaluate it with synthetic benchmarks using an InfiniBand cluster. Our results indicate that PASCoL can achieve significant reduction in energy consumed per byte transfer without additional penalty for various one-sided communication primitives and various message sizes and data transfer patterns.

Vishnu, Abhinav; Song, Shuaiwen; Marquez, Andres; Barker, Kevin J.; Kerbyson, Darren J.; Cameron, Kirk; Balaji, Pavan

2010-12-18T23:59:59.000Z

492

Modeling the Energy Use of a Connected and Automated Transportation System (Poster)  

SciTech Connect

Early research points to large potential impacts of connected and automated vehicles (CAVs) on transportation energy use - dramatic savings, increased use, or anything in between. Due to a lack of suitable data and integrated modeling tools to explore these complex future systems, analyses to date have relied on simple combinations of isolated effects. This poster proposes a framework for modeling the potential energy implications from increasing penetration of CAV technologies and for assessing technology and policy options to steer them toward favorable energy outcomes. Current CAV modeling challenges include estimating behavior change, understanding potential vehicle-to-vehicle interactions, and assessing traffic flow and vehicle use under different automation scenarios. To bridge these gaps and develop a picture of potential future automated systems, NREL is integrating existing modeling capabilities with additional tools and data inputs to create a more fully integrated CAV assessment toolkit.

Gonder, J.; Brown, A.

2014-07-01T23:59:59.000Z

493

A probability current analysis of energy transport in open quantum systems  

E-Print Network (OSTI)

We introduce a probability current analysis of excitation energy transfer between states of an open quantum system. Expressing the energy transfer through currents of excitation probability between the states in a site representation enables us to gain key insights into the energy transfer dynamics. It allows to, i) identify the pathways of energy transport in large networks of sites and to quantify their relative weights, ii) quantify the respective contributions of unitary dynamics, dephasing, and relaxation/dissipation processes to the energy transfer, and iii) quantify the contribution of coherence to the energy transfer. Our analysis is general and can be applied to a broad range of open quantum system descriptions (with coupling to non-Markovian environments) in a straightforward manner.

Jan J. J. Roden; K. Birgitta Whaley

2015-01-24T23:59:59.000Z

494

STRATEGIC PLAN FOR COORDINATING RURAL INTELLIGENT TRANSPORTATION SYSTEM (ITS) TRANSIT DEVELOPMENT IN THE GREAT SMOKY MOUNTAINS NATIONAL PARK  

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

256 256 STRATEGIC PLAN FOR COORDINATING RURAL INTELLIGENT TRANSPORTATION SYSTEM (ITS) TRANSIT DEVELOPMENT IN THE GREAT SMOKY MOUNTAINS NATIONAL PARK L. F. Truett (TRUETTLF@ORNL.GOV) S. M. Chin (CHINS@ORNL.GOV) E. C. P. Chang (ECC2005@ORNL.GOV) November 2002 Prepared for the FEDERAL TRANSIT ADMINISTRATION U.S. DEPARTMENT OF TRANSPORTATION Washington, D.C. 20590 Prepared by the Center for Transportation Analysis OAK RIDGE NATIONAL LABORATORY Oak Ridge, Tennessee 37831-6073 managed by UT-BATTELLE, LLC for the U.S. DEPARTMENT OF ENERGY under Contract No. DE-AC05-00OR22725 Coordination of Transit Concepts in GSMNP page iii, 11/12/02 STRATEGIC PLAN FOR COORDINATING RURAL INTELLIGENT TRANSPORTATION SYSTEM (ITS) TRANSIT DEVELOPMENT IN THE

495

A comparison of digital radiography systems in terms of effective detective quantum efficiency  

SciTech Connect

Purpose: The purpose of this study is to compare digital radiography systems using the metric effective detective quantum efficiency (eDQE), which better reflects digital radiography imaging system performance under clinical operating conditions, in comparison with conventional metrics such as modulation transfer function (MTF), normalized noise power spectra (NNPS), and detective quantum efficiency (DQE). Methods: The eDQE was computed by the calculation of the MTF, the NNPS, the phantom attenuation and scatter, and estimation of x-ray flux. The physical characterization of the systems was obtained with the standard beam conditions RQA5 and RQA9, using the PA Chest phantom proposed by AAPM Report no. 31 simulating the attenuation and scatter characteristics of the adult human thorax. The MTF (eMTF) was measured by using an edge test placed at the frontal surface of the phantom, the NNPS (eNNPS) was calculated from images of the phantom acquired at three different exposure levels covering the operating range of the system (E{sub 0}, which is the exposure at which a system is normally operated, 1/3 E{sub 0}, and 3 E0), and scatter measurements were assessed by using a beam-stop technique. The integral of DQE (IDQE) and eDQE (IeDQE) was calculated over the whole spatial frequency range. Results: The eMTF results demonstrate degradation due to magnification and the presence of scattered radiation. The eNNPS was influenced by the grid presence, and in some systems, it contained structured noise. At typical clinical exposure levels, the magnitude of eDQE(0) with respect to DQE(0) at RQA9 beam conditions was 13%, 17%, 16%, 36%, and 24%, respectively, for Carestream DRX-1, Carestream DRX-1C, Carestream Direct View CR975, Philips Digital Diagnost VM, and GE Revolution XR/d. These results were confirmed by the ratio of IeDQE and IDQE in the same conditions. Conclusions: The authors confirm the robustness and reproducibility of the eDQE method. As expected, the DR systems performed better than the CR systems due to their superior signal-to-noise transfer characteristics. The results of this study suggest the eDQE method may provide an opportunity to more accurately assess the clinical performance of digital radiographic imaging systems by accounting for factors such as the presence of scatter, use of an antiscatter grid, and magnification and focal spot blurring effects, which are not reflected in conventional DQE measures.

Bertolini, Marco; Nitrosi, Andrea; Rivetti, Stefano; Lanconelli, Nico; Pattacini, Pierpaolo; Ginocchi, Vladimiro; Iori, Mauro [Department of Advanced Technology, Medical Physics Unit, Azienda Ospedaliera ASMN, Istituto di Ricovero e Cura a Carattere Scientifico, Reggio Emilia 42123 (Italy); Fisica Medica, Ospedale di Sassuolo S.p.A., Modena 41049 (Italy); Alma Mater Studiorum, Physics Department, University of Bologna, Bologna 40127 (Italy); Department of Diagnostic Imaging, Radiology Unit, Azienda Ospedaliera ASMN, Istituto di Ricovero e Cura a Carattere Scientifico, Reggio Emilia 42123 (Italy); Department of Diagnostic Imaging, Radiology Unit, Azienda USL, Reggio Emilia 42122 (Italy); Department of Advanced Technology, Medical Physics Unit, Azienda Ospedaliera ASMN, Istituto di Ricovero e Cura a Carattere Scientifico, Reggio Emilia 42123 (Italy)

2012-05-15T23:59:59.000Z

496

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

E-Print Network (OSTI)

for ORC turbine and pump efficiencies as a function of the100kW) the steam turbine isentropic efficiencies ranges 50%known that turbine isentropic efficiency decreases linearly

Ho, Tony

2012-01-01T23:59:59.000Z

497

Energy-efficient mortgages and home energy rating systems: A report on the nation`s progress  

SciTech Connect

This report summarizes progress throughout the nation in establishing voluntary programs linking home energy rating systems (HERS) and energy-efficient mortgages (EEMs). These programs use methods for rating the energy efficiency of new and existing homes and predicting energy cost savings so lenders can factor in energy cost savings when underwriting mortgages. The programs also encourage lenders to finance cost-effective energy-efficiency improvements to existing homes with low-interest mortgages or other instruments. The money saved on utility bills over the long term can more than offset the cost of such energy-efficiency improvements. The National Collaborative on HERS and EEMs recommended that this report be prepared.

Farhar, B.C.; Eckert, J.

1993-09-01T23:59:59.000Z

498

Efficient Detection on Stochastic Faults in PLC Based Automated Assembly Systems With Novel Sensor Deployment and Diagnoser Design  

E-Print Network (OSTI)

In this dissertation, we proposed solutions on novel sensor deployment and diagnoser design to efficiently detect stochastic faults in PLC based automated systems First, a fuzzy quantitative graph based sensor deployment was called upon to model...

Wu, Zhenhua

2012-07-16T23:59:59.000Z

499

Improve Motor System Efficiency with MotorMaster+, Software Tools for Industry, Industrial Technologies Program (ITP) (Fact Sheet)  

SciTech Connect

This fact sheet describes how the Industrial Technologies Program MotorMaster+ software tool aids industrial plants with finding energy-efficient motor replacement options and managing motor systems.

Not Available

2008-12-01T23:59:59.000Z

500

Transportation Analysis, Modeling, and Simulation (TAMS) Application  

E-Print Network (OSTI)

Transportation Analysis, Modeling, and Simulation (TAMS) Application Center for Transportation Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies T he Center for Transportation Analysis (CTA) TAMS application is a web-based tool that supports