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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
to obtain the most current and comprehensive results.


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

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

E-Print Network (OSTI)

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

Wang, Yuhang

3

Highly-efficient noise-assisted energy transport in classical oscillator systems  

E-Print Network (OSTI)

Photosynthesis is a biological process that involves the highly-efficient transport of energy captured from the sun to a reaction center, where conversion into useful biochemical energy takes place. Even though one can always use a quantum perspective to describe any physical process, since everything follows the laws of Quantum Mechanics, is the use of quantum theory imperative to explain this high efficiency? Several theoretical studies suggest that the high efficiency can only be understood as a result of the interplay between the quantum coherent evolution of the photosynthetic system, and noise introduced by its surrounding environment. Notwithstanding, we show here that noise-assisted highly-efficient energy transport can be found as well in purely classical systems; therefore, we might conclude that high efficiency energy transfer in photosynthetic systems could also be anticipated by classical models, without the need to resorting to quantum effects. Strikingly, the wider scope of applicability of the...

León-Montiel, R de J

2013-01-01T23:59:59.000Z

4

TRANSPORTATION SYSTEMS Transportation systems are the building  

E-Print Network (OSTI)

TRANSPORTATION SYSTEMS Transportation systems are the building blocks of modern society. Efficient mobility improves the quality of life. However, transportation systems by their very nature also affect quality. The transportation systems graduate pro- gram provides in-depth knowledge on the design

Wang, Yuhang

5

Highly-efficient noise-assisted energy transport in classical oscillator systems  

E-Print Network (OSTI)

Photosynthesis is a biological process that involves the highly-efficient transport of energy captured from the sun to a reaction center, where conversion into useful biochemical energy takes place. Even though one can always use a quantum perspective to describe any physical process, since everything follows the laws of Quantum Mechanics, is the use of quantum theory imperative to explain this high efficiency? Making use of the quantum-classical correspondence of electronic energy transfer recently introduced by Eisfeld and Briggs [Phys. Rev. E 85, 046118 (2012)], we show here that the highly-efficient noise-assisted energy transport described by Rebentrost et al. [New J. Phys. 11, 033003 (2009)], and Plenio and Huelga [New J. Phys. 10, 113019 (2008)], as the result of the interplay between the quantum coherent evolution of the photosynthetic system and noise introduced by its surrounding environment, it can be found as well in purely classical systems. The wider scope of applicability of the enhancement of energy transfer assisted by noise might open new ways for developing new technologies aimed at enhancing the efficiency of a myriad of energy transfer systems, from information channels in micro-electronic circuits to long-distance high-voltage electrical lines.

R. de J. León-Montiel; Juan P. Torres

2013-01-08T23:59:59.000Z

6

High Temperature Superconducting Magnets for Efficient Low Energy Beam Transport Systems  

E-Print Network (OSTI)

Modern ion accelerators and ion implantation systems need very short, highly versatile, Low Energy Beam Transport (LEBT) systems. The need for reliable and continuous operation requires LEBT designs to be simple and robust. The energy efficiency of available high temperature superconductors (HTS), with efficient and simple cryocooler refrigeration, is an additional attraction. Innovative, compact LEBT systems based on solenoids designed and built with high-temperature superconductor will be developed using computer models and prototyped. The parameters will be chosen to make this type of LEBT useful in a variety of ion accelerators, ion implantation systems, cancer therapy synchrotrons, and research accelerators, including the ORNL SNS. The benefits of solenoids made with HTS will be evaluated with analytical and numerical calculations for a two-solenoid configuration, as will be used in the SNS prototype LEBT that will replace the electrostatic one at SNS, and a single solenoid configuration, as was proposed...

Popovic, M; Johnson, R P; Nipper, J H

2013-01-01T23:59:59.000Z

7

Fundamental performance limits and efficient polices for Transportation-On-Demand systems  

E-Print Network (OSTI)

Transportation-On-Demand (TOD) systems, where users generate requests for transportation from a pick-up point to a delivery point, are already very popular and are expected to increase in usage dramatically as the inconvenience ...

Pavone, Marco

8

Transportation Energy-Efficiency Workshop  

U.S. Energy Information Administration (EIA)

Notes on the Energy Information Administration's summary session on Transportation Sector Energy-Efficiency Workshop on March 21, 1996

9

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

10

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

11

Energy Efficiency: Transportation and Buildings  

Science Conference Proceedings (OSTI)

We present a condensed version of the American Physical Society's 2008 analysis of energy efficiency in the transportation and buildings sectors in the United States with updated numbers. In addition to presenting technical findings

Michael S. Lubell; Burton Richter

2011-01-01T23:59:59.000Z

12

Alternative Fuels Data Center: Transportation Efficiency Fund  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Fund is a non-lapsing fund managed by the Maine Department of Transportation to increase energy efficiency and reduce reliance on fossil fuels within the state's transportation...

13

Intelligent Transport Systems  

E-Print Network (OSTI)

in Sustainable Urban Transport: City Interview Synthesis (of Leeds, Institute for Transport Studies, forthcoming.I NTELLIGENT TRANSPORT SYSTEMS LINKING TECHNOLOGY AND

Deakin, Elizabeth; Frick, Karen Trapenberg; Skabardonis, Alexander

2009-01-01T23:59:59.000Z

14

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

15

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.

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

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.

1993-09-01T23:59:59.000Z

18

Transport in granular systems  

E-Print Network (OSTI)

There are many situations in which a continuum view of granular systems does not fully capture the relevant mechanics. In order for engineers to be able to design systems for transporting granular materials, there needs ...

Wendell, Dawn M. (Dawn Marie), 1983-

2011-01-01T23:59:59.000Z

19

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"

20

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,

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

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

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

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

22

Energy Efficiency Report:Chapter 5: Transportation Sector  

U.S. Energy Information Administration (EIA)

... e Green, David L. And Yuehui Fan, Transportation Energy Efficiency Trends, 1972-1992, Oak Ridge National Laboratory (December 1994) ...

23

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

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

Waste Management Packaging and Transportation Automated Transportation Management System (ATMS) Automated Transportation Management System (ATMS) The Department of Energy's...

24

Rail transport. trends in energy efficiency  

Science Conference Proceedings (OSTI)

The increasing cost and insecure future supply of diesel fuel have led the U.S. railroad industry to continuously improve on its already efficient use of energy. Among such improvements that are planned or in progress are a fuel-efficient version of a mainline engine, which should save 13,200 gal/yr of fuel; and lightweight coal cars and freight-car trucks, which offer fuel-saving opportunities. The use of synthetic fuels such as methanol-from-coal or all-electric locomotive on a broad scale is unlikely within the next 20 yr, but an increased use of synthetic fuels in other large fuel-consuming transport modes, notably cars, would ease the rail industry's future diesel fuel supply problems. Other fuel-saving factors to consider, such as proper train-operating procedures and the use of the best routes; and the new design of rail cars are also discussed.

Eldridge, C.C.; Van Gorp, P.H.

1980-06-01T23:59:59.000Z

25

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

26

Heat transport system  

DOE Patents (OSTI)

A heat transport system of small size which can be operated in any orientation consists of a coolant loop containing a vaporizable liquid as working fluid and includes in series a vaporizer, a condenser and two one-way valves and a pressurizer connected to the loop between the two valves. The pressurizer may be divided into two chambers by a flexible diaphragm, an inert gas in one chamber acting as a pneumatic spring for the system.

Pierce, Bill L. (Pittsburgh, PA)

1978-01-01T23:59:59.000Z

27

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.

28

SUBSURFACE EMPLACEMENT TRANSPORTATION SYSTEM  

SciTech Connect

The objective of this analysis is to identify issues and criteria that apply to the design of the Subsurface Emplacement Transportation System (SET). The SET consists of the track used by the waste package handling equipment, the conductors and related equipment used to supply electrical power to that equipment, and the instrumentation and controls used to monitor and operate those track and power supply systems. Major considerations of this analysis include: (1) Operational life of the SET; (2) Geometric constraints on the track layout; (3) Operating loads on the track; (4) Environmentally induced loads on the track; (5) Power supply (electrification) requirements; and (6) Instrumentation and control requirements. This analysis will provide the basis for development of the system description document (SDD) for the SET. This analysis also defines the interfaces that need to be considered in the design of the SET. These interfaces include, but are not limited to, the following: (1) Waste handling building; (2) Monitored Geologic Repository (MGR) surface site layout; (3) Waste Emplacement System (WES); (4) Waste Retrieval System (WRS); (5) Ground Control System (GCS); (6) Ex-Container System (XCS); (7) Subsurface Electrical Distribution System (SED); (8) MGR Operations Monitoring and Control System (OMC); (9) Subsurface Facility System (SFS); (10) Subsurface Fire Protection System (SFR); (11) Performance Confirmation Emplacement Drift Monitoring System (PCM); and (12) Backfill Emplacement System (BES).

T. Wilson; R. Novotny

1999-11-22T23:59:59.000Z

29

Agent Tcl: A transportable agent system Robert S. Gray \\Lambda  

E-Print Network (OSTI)

Agent Tcl: A transportable agent system Robert S. Gray \\Lambda Department of Computer Science Tcl is a transportable­agent system that is under development at Dartmouth College. A transportable and efficient alter­ native. The goal of Agent Tcl is to address the weaknesses of existing transportable

30

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

31

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

32

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

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

August 31, 2012 Fiscal Year (FY) 2012 Objectives Develop and validate a predictive transport model that * enables efficiency maximization at conditions that meet DOE cost...

33

Transportation System Concept of Operations  

Science Conference Proceedings (OSTI)

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

N. Slater-Thompson

2006-08-16T23:59:59.000Z

34

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

35

Transportation, Aging and Disposal Canister System Performance...  

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

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

36

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

37

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

38

Model Energy Conversion Efficiency of Biological Systems  

Science Conference Proceedings (OSTI)

MML Researchers Model Energy Conversion Efficiency of Biological Systems. Novel, highly efficient energy conversion ...

2013-03-15T23:59:59.000Z

39

Transport in nanoscale systems  

E-Print Network (OSTI)

In part I of the Thesis charge ordering and transport in arrays of coated semiconductor nanocrystals (quantum dot arrays) are studied. Charge ordering in dot arrays is considered by mapping the electrons on the dots onto ...

Novikov, Dmitry S., 1976-

2003-01-01T23:59:59.000Z

40

Energy Efficiency Report: Chapter 5 Figures (Transportation)  

U.S. Energy Information Administration (EIA)

EIA’s effort to take the lead to develop robust and reproducible energy-efficiency indicators and also measurements of greenhouse gas as related to energy use and ...

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

Pupillary efficient lighting system  

DOE Patents (OSTI)

A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination. 5 figs.

Berman, S.M.; Jewett, D.L.

1989-04-14T23:59:59.000Z

42

Pupillary efficient lighting system  

DOE Patents (OSTI)

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

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

1991-01-01T23:59:59.000Z

43

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.

44

Efficient, automated Monte Carlo methods for radiation transport  

Science Conference Proceedings (OSTI)

Monte Carlo simulations provide an indispensible model for solving radiative transport problems, but their slow convergence inhibits their use as an everyday computational tool. In this paper, we present two new ideas for accelerating the convergence ... Keywords: Computational efficiency, Geometrically convergent Monte Carlo algorithms, Transport equation

Rong Kong; Martin Ambrose; Jerome Spanier

2008-11-01T23:59:59.000Z

45

Distributed decision evaluation model in public transportation systems  

Science Conference Proceedings (OSTI)

Due to several external and internal disturbances affecting public transportation systems, some regulation measures have to be undertaken. In the regulation process, the regulator has to evaluate a number of possible decisions in order to determine best ... Keywords: Multi-agent systems, Multicriteria optimization, Pareto optimality, Plurality voting, Public transportation systems, Traffic regulation, a-efficiency

Imen Boudali; Inès Ben Jaafar; Khaled Ghedira

2008-04-01T23:59:59.000Z

46

Transportation Routing Analysis Geographic Information System (TRAGIS)  

E-Print Network (OSTI)

Transportation Routing Analysis Geographic Information System (TRAGIS) Model and Network Databases The Transportation Routing Analysis Geographic Information System (TRAGIS) model is a geographic information system tool for modeling transportation routing. TRAGIS offers numerous options for route calculation

47

Heat transport system  

DOE Patents (OSTI)

A falling bed of ceramic particles receives neutron irradiation from a neutron-producing plasma and thereby transports energy as heat from the plasma to a heat exchange location where the ceramic particles are cooled by a gas flow. The cooled ceramic particles are elevated to a location from which they may again pass by gravity through the region where they are exposed to neutron radiation. Ceramic particles of alumina, magnesia, silica and combinations of these materials are contemplated as high-temperature materials that will accept energy from neutron irradiation. Separate containers of material incorporating lithium are exposed to the neutron flux for the breeding of tritium that may subsequently be used in neutron-producing reactions. The falling bed of ceramic particles includes velocity partitioning between compartments near to the neutron-producing plasma and compartments away from the plasma to moderate the maximum temperature in the bed.

Harkness, Samuel D. (McMurray, PA)

1982-01-01T23:59:59.000Z

48

Transportable Energy Storage Systems Project  

Science Conference Proceedings (OSTI)

This project will define the requirements and specification for a transportable energy storage system and then screen various energy storage options and assess their capability to meet that specification. The application will be designed to meet peak electrical loads (3-4 hours of storage) on the electrical distribution system.

2009-10-23T23:59:59.000Z

49

Applied research of data sensing and service to ubiquitous intelligent transportation system  

Science Conference Proceedings (OSTI)

High-efficiency transportation systems in urban environments are not only solutions for the growing public travel demands, but are also the premise for enlarging transportation capacity and narrowing the gap between urban and rural areas. Such transportation ... Keywords: Beijing ubiquitous transportation intelligent system (BUIT), application systems, cyber physical systems (CPS), moving sensors (MS)

Weifeng Lv; Bowen Du; Dianfu Ma; Tongyu Zhu; Chen Wang

2010-09-01T23:59:59.000Z

50

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

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

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

51

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

52

The efficient use of natural gas in transportation  

DOE Green Energy (OSTI)

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

Stodolsky, F.; Santini, D.J.

1992-01-01T23:59:59.000Z

53

The efficient use of natural gas in transportation  

DOE Green Energy (OSTI)

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

Stodolsky, F.; Santini, D.J.

1992-04-01T23:59:59.000Z

54

Solid oxide fuel cells for transportation: A clean, efficient alternative for propulsion  

DOE Green Energy (OSTI)

Fuel cells show great promise for providing clean and efficient transportation power. Of the fuel cell propulsion systems under investigation, the solid oxide fuel cell (SOFC) is particularly attractive for heavy duty transportation applications that have a relatively long duty cycle, such as locomotives, trucks, and barges. Advantages of the SOFC include a simple, compact system configuration; inherent fuel flexibility for hydrocarbon and alternative fuels; and minimal water management. The specific advantages of the SOFC for powering a railroad locomotive are examined. Feasibility, practicality, and safety concerns regarding SOFCs in transportation applications are discussed, as am the major R D issues.

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

1993-01-01T23:59:59.000Z

55

Solid oxide fuel cells for transportation: A clean, efficient alternative for propulsion  

DOE Green Energy (OSTI)

Fuel cells show great promise for providing clean and efficient transportation power. Of the fuel cell propulsion systems under investigation, the solid oxide fuel cell (SOFC) is particularly attractive for heavy duty transportation applications that have a relatively long duty cycle, such as locomotives, trucks, and barges. Advantages of the SOFC include a simple, compact system configuration; inherent fuel flexibility for hydrocarbon and alternative fuels; and minimal water management. The specific advantages of the SOFC for powering a railroad locomotive are examined. Feasibility, practicality, and safety concerns regarding SOFCs in transportation applications are discussed, as am the major R&D issues.

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

1993-04-01T23:59:59.000Z

56

Vapor phase heat transport systems  

DOE Green Energy (OSTI)

Vapor phase heat-transport systems are being tested in two of the passive test cells at Los Alamos. The systems consist of an active fin-and-tube solar collector and a condenser inside a water storage tank. The refrigerant, R-11, can be returned to the collector by a pump or by a self-pumping scheme. In one of the test cells the liquid was self-pumped to the roof-mounted collector 17 ft above the condenser. A mechanical valve was designed and tested that showed that the system could operate in a completely passive mode. Performance comparisons have been made with a passive water wall test cell.

Hedstrom, J.C.

1984-01-01T23:59:59.000Z

57

Aruna Ravinagarajan System Energy Efficiency Lab  

E-Print Network (OSTI)

Aruna Ravinagarajan System Energy Efficiency Lab Aruna Ravinagarajan Advisor : Prof. Tajana Simunic of monitoring a structure over time and identifying damage System Energy Efficiency Lab damage A wireless sensor Efficiency Lab #12;SHM ­ How is it done?SHM ­ How is it done? System Energy Efficiency Lab Stuart G Taylor

58

Molecular Transport/Microporous Hydrogen Separation Systems  

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

Transport Microporous Hydrogen Separation Systems Participants Acquaviva, Jim: Armstrong, Tim: Asaro, Marianne: Berchtold, Kathryn: Bischoff, Brian: Cornelius, Chris: Huang,...

59

Thesis Title- Wireless Sensor Networking for Intelligent Transportation Systems  

E-Print Network (OSTI)

o My research area is Cyber-Physical Systems (CPS) that are computing systems interacting with physical, real environments. My research includes (i) CPS supporting the safe and efficient driving in transportation systems (e.g., road networks) in real life and (ii) CPS protecting and monitoring efficiently transportation systems (e.g., road networks and subways) and people (e.g., drivers, passengers, and pedestrians) in emergency situations (e.g., wars, accidents, and disasters). o I am leading CPS Laboratory at Sungkyunkwan University:

Advisor Prof; David H. C. Du; Prof Tian He; Advisor Prof; Yanghee Choi; Advisor Prof; Youngik Eom

2001-01-01T23:59:59.000Z

60

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

E-Print Network (OSTI)

resource/24/ ASHRAE handbook – HVAC systems and equipments.Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Efficient Cleanrooms Efficient HVAC Water Systems: Variable-

Xu, Tengfang

2005-01-01T23:59:59.000Z

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.


61

VISION 2050: An Integrated National Transportation System  

E-Print Network (OSTI)

VISION 2050: An Integrated National Transportation System #12;The Federal Transportation Advisory members are from the National Research Council (NRC) Transportation Research Board (TRB) and National advisory committees, including the FAA REDAC, NASA ASTAC, and the U.S. Department of Transportation (DOT

Hansman Jr., John R.

62

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.

63

Transportation  

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

Links Transportation and Air Quality Transportation Energy Policy Analysis Batteries and Fuel Cells Buildings Energy Efficiency Electricity Grid Energy Analysis Appliance Energy...

64

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

65

Energy Transport in the Vaidya System  

E-Print Network (OSTI)

Energy transport mechanisms can be generated by imposing relations between null tetrad Ricci components. Several kinds of mass and density transport generated by these relations are studied for the generalized Vaidya system.

J. P. Krisch; E. N. Glass

2005-03-21T23:59:59.000Z

66

Phase stable rf transport system  

DOE Patents (OSTI)

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

Curtin, M.T.; Natter, E.F.; Denney, P.M.

1991-02-19T23:59:59.000Z

67

Phase stable RF transport system  

DOE Patents (OSTI)

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

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

1992-01-01T23:59:59.000Z

68

Motor Systems Efficiency Supply Curves  

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

expert opinion and available data from the United States, Canada, the European Union, Thailand, Vietnam, and Brazil, bottom-up energy efficiency supply curve models were...

69

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

70

Optimizing the Transportation System's Response Capabilities  

E-Print Network (OSTI)

Capabilities 2 Abstract For the purposes of post-disaster response and recovery we view the transportation cooperation among evacuation vehicles. Keywords: Post-disaster response, controlled evacuation, transportation the Transportation System's Response Capabilities 1 Introduction For the purposes of a post-disaster response

Paschalidis, Ioannis "Yannis"

71

An Agent-Based Intelligent Transport System  

Science Conference Proceedings (OSTI)

The rapid development of modern transportation brings tremendous challenges to the intelligent transport system. Intelligent computer supported cooperative work (CSCW) and wireless communication technology are more and more used in intelligent transport ... Keywords: Ad-hoc, CSCW, GIS, GPS, IEEE802.11P, ITS, WIMAX

Xiaonan Liu; Zhiyi Fang

2008-12-01T23:59:59.000Z

72

Intelligent sea transportation system postoptimal analysis  

Science Conference Proceedings (OSTI)

A procedure for the ship dynamic positioning postoptimal analysis in Intelligent Sea Transportation System Optimization is proposed. The dynamic positioning control system design is based on the optimal constrained covariance control (OC3). ... Keywords: LQG control, dynamic positioning, intelligent transportation system, mathematical modelling, optimization problems, postoptimal analysis, robust control

Sadko Mandžuka; Ivan Bošnjak; Ljupko Šimunovic

2009-07-01T23:59:59.000Z

73

Transportation Routing Analysis Geographic Information System...  

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

Transportation Routing 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...

74

The Dynamics of Air Transportation System Transition  

E-Print Network (OSTI)

Both U.S. and European Air Transportation Systems face substantial challenges in transforming to meet future demand. This paper uses a feedback model to identify

Mozdzanowska, Aleksandra

75

Metadata Efficiency in Versioning File Systems  

Science Conference Proceedings (OSTI)

Versioning file systems retain earlier versions of modified files, allowing recovery from user mistakes or system corruption. Unfortunately, conventional versioning systems do not efficiently record large numbers of versions. In particular, versioned ...

Craig A. N. Soules; Garth R. Goodson; John D. Strunk; Gregory R. Ganger

2003-03-01T23:59:59.000Z

76

Metadata efficiency in versioning file systems  

Science Conference Proceedings (OSTI)

Versioning file systems retain earlier versions of modified files, allowing recovery from user mistakes or system corruption. Unfortunately, conventional versioning systems do not efficiently record large numbers of versions. In particular, versioned ...

Craig A. N. Soules; Garth R. Goodson; John D. Strunk; Gregory R. Ganger

2003-03-01T23:59:59.000Z

77

Road Transportable Analytical Laboratory system. Phase 1  

SciTech Connect

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

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

1993-09-01T23:59:59.000Z

78

Transport control in deterministic ratchet system  

E-Print Network (OSTI)

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

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

2006-12-17T23:59:59.000Z

79

Renewable and Efficient Electric Power Systems  

E-Print Network (OSTI)

.8.1 Ideal Transformers 37 1.8.2 Magnetization Losses 40 Problems 44 2 Fundamentals of Electric Power 51 2Renewable and Efficient Electric Power Systems Gilbert M. Masters Stanford University A JOHN WILEY & SONS, INC., PUBLICATION #12;#12;Renewable and Efficient Electric Power Systems #12;#12;Renewable

Kammen, Daniel M.

80

Texas Transportation Institute Texas A&M University System  

E-Print Network (OSTI)

Texas Transportation Institute Texas A&M University System Dock Burke Regents Fellow Director, Southwest Region University Transportation Center Senior Research Scientist, Texas Transportation Institute Texas Transportation Institute Texas A&M University System College Station, Texas 77843 d

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

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

Bertini, Robert L.

82

Efficient Conservative Global Transport Schemes for Climate and Atmospheric Chemistry Models  

Science Conference Proceedings (OSTI)

A computationally efficient mass-conservative transport scheme over the sphere is proposed and tested. The scheme combines a conservative finite-volume method with an efficient semi-Lagrangian scheme based on the dimension splitting “cascade” ...

Ramachandran D. Nair; Jeffrey S. Scroggs; Fredrick H. M. Semazzi

2002-08-01T23:59:59.000Z

83

Improving Industrial Refrigeration System Efficiency - Actual Applications  

E-Print Network (OSTI)

This paper discusses actual design and modifications for increased system efficiency and includes reduced chilled liquid flow during part load operation, reduced condensing and increased evaporator temperatures for reduced system head, thermosiphon 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 head and pumping energy, and using high efficiency motors.

White, T. L.

1980-01-01T23:59:59.000Z

84

An online transportation system simulation testbed  

Science Conference Proceedings (OSTI)

A testbed for evaluation of online distributed simulations of transportation system infrastructures is described that includes a modest portion of an urban road network in the midtown region of Atlanta, Georgia. The testbed includes sensors, servers, ...

Brandon Baker; Edward Hagle; Toyan Harvey; Kendra Jones; Michael Pieper; Benjamin Stensland; Prashant Thiruvengadachari; Eric Thompson; Jewel Watts; Javier Young; Randall Guensler; Michael Hunter; Richard Fujimoto

2009-12-01T23:59:59.000Z

85

ERTP: Energy-efficient and Reliable Transport Protocol for data streaming in Wireless Sensor Networks  

Science Conference Proceedings (OSTI)

Emerging data streaming applications in Wireless Sensor Networks require reliable and energy-efficient Transport Protocols. Our recent Wireless Sensor Network deployment in the Burdekin delta, Australia, for water monitoring [T. Le Dinh, W. Hu, P. Sikka, ... Keywords: Energy-efficiency, Reliability, Transport protocol, Wireless Sensor Network

Tuan Le; Wen Hu; Peter Corke; Sanjay Jha

2009-05-01T23:59:59.000Z

86

Transportation  

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

Meier AKMeier@lbl.gov (510) 486-4740 Links Transportation and Air Quality Batteries and Fuel Cells Buildings Energy Efficiency Electricity Grid Energy Analysis Energy...

87

Results of a field test of heating system efficiency and thermal distribution system efficiency in a manufactured home  

SciTech Connect

A two-day test using electric coheating was performed on a manufactured home in Watertown, New York. The main objective of the test was to evaluate planned procedures for measuring thermal distribution system efficiency. (Thermal distribution systems are the ductwork or piping used to transport heat or cooling effect from the equipment that produces it to the building spaces in which it is used.) These procedures are under consideration for a standard method of test now being prepared by a special committee of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers. The ability of a coheating test to give a credible and repeatable value for the overall heating system efficiency was supported by the test data. Distribution efficiency is derived from system efficiency by correcting for energy losses from the equipment. Alternative means for achieving this were tested and assessed. The best value for system efficiency in the Watertown house was 0.53, while the best value for distribution efficiency was 0.72.

Andrews, J.W.; Krajewski, R.F.; Strasser, J.J. [Brookhaven National Lab., Upton, NY (United States); Kinney, L.; Lewis, G. [Synertech Systems Corp., Syracuse, NY (United States)

1995-05-01T23:59:59.000Z

88

Efficient Compression of CO2 and Pipeline Transport ...  

Science Conference Proceedings (OSTI)

... Final pressure around 1,500 to 2,200 psia for pipeline transport or re-injection. ... Perform optimization of pipeline booster stations ...

2012-10-22T23:59:59.000Z

89

Effects of Travel Reduction and Efficient Driving on Transportation...  

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

of Transportation. http:ntl.bts.govlibjpodocsreptste13071.pdf Jones, Peter, Lynn Sloman. 2003. "Encouraging Behavioural Change Through Marketing and Management: What...

90

A Modular Method for the Efficient Calculation of Ballistic Transport ...  

Science Conference Proceedings (OSTI)

of Ballistic Transport Through Quantum. Billiards. S. Rotter, B. Weingartner, F. Libisch, F. Aigner, J. Feist, and J. Burgdörfer. Institute for Theoretical Physics, ...

91

TRANSIMS: Transportation analysis and simulation system  

SciTech Connect

This document summarizes the TRansportation ANalysis and SIMulation System (TRANSIMS) Project, the system`s major modules, and the project`s near-term plans. TRANSIMS will employ advanced computational and analytical techniques to create an integrated regional transportation systems analysis environment. The simulation environment will include a regional population of individual travelers and freight loads with travel activities and plans, whose individual interactions will be simulated on the transportation system, and whose environmental impact will be determined. We will develop an interim operational capability (IOC) for each major TRANSIMS module during the five-year program. When the IOC is ready, we will complete a specific case study to confirm the IOC features, applicability, and readiness.

Smith, L.; Beckman, R.; Baggerly, K. [and others

1995-07-01T23:59:59.000Z

92

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

93

Design of periodic beam-transport systems  

SciTech Connect

Periodic beam-transport systems have several advantages including insensitivity to errors, minimum magnet apertures, and use of standardized components. A simple procedure is given for the design of modules, with and without bending magnets, that have the same matched beam properties. These modules can be combined in certain ways to produce systems that are achromatic and require a minimum number of matching elements.

Farrell, J.A.

1983-01-01T23:59:59.000Z

94

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

95

Transportation  

Science Conference Proceedings (OSTI)

Transportation systems are an often overlooked critical infrastructure component. These systems comprise a widely diverse elements whose operation impact all aspects of society today. This chapter introduces the key transportation sectors and illustrates ...

Mark Hartong; Rajn Goel; Duminda Wijesekera

2012-01-01T23:59:59.000Z

96

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

97

STORAGE, TRANSPORTATION AND DISPOSAL SYSTEM FOR USED NUCLEAR ...  

STORAGE, TRANSPORTATION AND DISPOSAL SYSTEM FOR USED NUCLEAR FUEL ASSEMBLIES United States Patent Application

98

Industrial Compressed Air System Energy Efficiency Guidebook.  

DOE Green Energy (OSTI)

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

99

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

100

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

E-Print Network (OSTI)

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

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

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

DOE Green Energy (OSTI)

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

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

2006-11-01T23:59:59.000Z

102

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.

103

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

104

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

105

Solar ADEPT: Efficient Solar Energy Systems  

DOE Green Energy (OSTI)

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

106

Demand-Responsive and Efficient Building Systems as a Resource...  

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

Demand-Responsive and Efficient Building Systems as a Resource for Electricity Reliability Title Demand-Responsive and Efficient Building Systems as a Resource for Electricity...

107

Building Technologies Office: Highly Energy Efficient Wall Systems...  

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

Highly Energy Efficient Wall Systems Research Project to someone by E-mail Share Building Technologies Office: Highly Energy Efficient Wall Systems Research Project on Facebook...

108

Motor System Energy Efficiency Supply Curves: A Methodology for...  

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

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,...

109

Exploring Efficient Data Movement Strategies for Exascale Systems...  

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

Exploring Efficient Data Movement Strategies for Exascale Systems with Deep Memory Hierarchies Exploring Efficient Data Movement Strategies for Exascale Systems with Deep Memory...

110

EVermont Renewable Hydrogen Production and Transportation Fueling System  

DOE Green Energy (OSTI)

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

Garabedian, Harold T.

2008-03-30T23:59:59.000Z

111

Heat transport system, method and material  

DOE Patents (OSTI)

A heat transport system, method and composite material 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.

Musinski, Donald L. (Saline, MI)

1987-01-01T23:59:59.000Z

112

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

113

Hydrogen-fueled polymer electrolyte fuel cell systems for transportation.  

DOE Green Energy (OSTI)

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

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

1998-10-19T23:59:59.000Z

114

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

Science Conference Proceedings (OSTI)

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

NONE

1998-01-01T23:59:59.000Z

115

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.

116

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

117

Energy Efficient Operation of Ammonia Refrigeration Systems  

SciTech Connect

Ammonia refrigeration systems typically offer many energy efficiency opportunities because of their size and complexity. This paper develops a model for simulating single-stage ammonia refrigeration systems, describes common energy saving opportunities, and uses the model to quantify those opportunities. The simulation model uses data that are typically available during site visits to ammonia refrigeration plants and can be calibrated to actual consumption and performance data if available. Annual electricity consumption for a base-case ammonia refrigeration system is simulated. The model is then used to quantify energy savings for six specific energy efficiency opportunities; reduce refrigeration load, increase suction pressure, employ dual suction, decrease minimum head pressure set-point, increase evaporative condenser capacity, and reclaim heat. Methods and considerations for achieving each saving opportunity are discussed. The model captures synergistic effects that result when more than one component or parameter is changed. This methodology represents an effective method to model and quantify common energy saving opportunities in ammonia refrigeration systems. The results indicate the range of savings that might be expected from common energy efficiency opportunities.

Mohammed, Abdul Qayyum [University of Dayton, Ohio; Wenning, Thomas J [ORNL; Sever, Franc [University of Dayton, Ohio; Kissock, Professor Kelly [University of Dayton, Ohio

2013-01-01T23:59:59.000Z

118

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

119

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

120

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

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

Efficient Schemes for Reducing Numerical Dispersion in Modeling Multiphase Transport through Porous and Fractured Media  

E-Print Network (OSTI)

within a fluid in a multiphase- porous-medium system isand radiation in a multiphase, multicomponent, porous mediumModeling Multiphase Transport through Porous and Fractured

Wu, Yu-Shu; Forsyth, Peter A.

2006-01-01T23:59:59.000Z

122

Transmission System Efficiency Technology and Methodology Assessment  

Science Conference Proceedings (OSTI)

Reducing the carbon footprint of the electric power industry and increasing the role of renewable energy are crucial parts of a strategy for the greening of electric energy supply. This work describes the technological options available to reduce losses in transmission systems. It presents a comprehensive framework that can be applied consistently and uniformly to all energy efficiency demonstration projects to identify and quantify the various types of benefits in a standardized manner. The framework id...

2010-12-15T23:59:59.000Z

123

Definition and Measurement of Transportation System Performance  

E-Print Network (OSTI)

transportation Economic and social development Entertainment Other Costsbenefits and costs of transportation. It is a social policy

Dahlgren, Joy

1998-01-01T23:59:59.000Z

124

Fuels processing for transportation fuel cell systems  

DOE Green Energy (OSTI)

Fuel cells primarily use hydrogen as the fuel. This hydrogen must be produced from other fuels such as natural gas or methanol. The fuel processor requirements are affected by the fuel to be converted, the type of fuel cell to be supplied, and the fuel cell application. The conventional fuel processing technology has been reexamined to determine how it must be adapted for use in demanding applications such as transportation. The two major fuel conversion processes are steam reforming and partial oxidation reforming. The former is established practice for stationary applications; the latter offers certain advantages for mobile systems and is presently in various stages of development. This paper discusses these fuel processing technologies and the more recent developments for fuel cell systems used in transportation. The need for new materials in fuels processing, particularly in the area of reforming catalysis and hydrogen purification, is discussed.

Kumar, R.; Ahmed, S.

1995-07-01T23:59:59.000Z

125

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

126

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

127

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

128

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...

129

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

130

Integrated Hydrogen and Intelligent Transportation Systems Evaluation for the California Department of Transportation  

E-Print Network (OSTI)

electric drive systems for vehicles, demonstrated its V2G system with the company’s “Gen-2” AC150 drivetrain at the Electric Transportation Industry

Lipman, Timothy; Shaheen, Susan

2005-01-01T23:59:59.000Z

131

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

DOE Green Energy (OSTI)

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

132

R&D ERL: Photocathode Deposition and Transport System  

SciTech Connect

The purpose of the photocathode deposition and transport system is to (1) produce a robust, high yield multialkali photocathode and (2) have a method of transporting the multialkali photocathode for insertion into a super conducting RF electron gun. This process is only successful if a sufficient quantum efficiency lifetime of the cathode, which is inserted in the SRF electron gun, is maintained. One important element in producing a multialkali photocathode is the strict vacuum requirements of 10{sup -11} torr to assure success in the production of longlived photocathodes that will not have their QE or lifetime depleted due to residual gas poisoning in a poor vacuum. A cutaway view of our third generation deposition system is shown in figure 1. There are certain design criteria and principles required. One must be able to install, remove, rejuvenate and replace a cathode without exposing the source or cathode to atmosphere. The system must allow one to deposit Cs, K, and Sb on a cathode tip surface at pressures in the 10{sup -10} to 10{sup -9} torr range. The cathode needs to be heated to as high as 850 C for cleaning and maintained at 130 C to 150 C during deposition. There should also be the capability for in-situ QE measurements. In addition the preparation of dispenser photocathodes must be accounted for, thus requiring an ion source for cathode cleaning. Finally the transport cart must be mobile and be able to negotiate the ERL facility labyrinth.

Pate, D.; Ben-Zvi, I.; Rao, T.; Burrill, R.; Todd, R.; Smedley, J.; Holmes, D.

2010-01-01T23:59:59.000Z

133

Energy efficiency of a dynamic glazing system  

SciTech Connect

The reduction of air-conditioning energy consumptions is one of the main indicators to act on when improving the energy efficiency in buildings. In the case of advanced technological buildings, a meaningful contribution to the thermal loads and the energy consumptions reduction could depend on the correct configuration and management of the envelope systems. In recent years, the architectural trend toward highly transparent all-glass buildings presents a unique challenge and opportunity to advance the market for emerging, smart, dynamic window and dimmable daylighting control technologies (). A prototype dynamic glazing system was developed and tested at ITC-CNR; it is aimed at actively responding to the external environmental loads. Both an experimental campaign and analyses by theoretical models were carried out, aimed at evaluating the possible configurations depending on different weather conditions in several possible places. Therefore, the analytical models of the building-plant system were defined by using a dynamic energy simulation software (EnergyPlus). The variables that determine the system performance, also influenced by the boundary conditions, were analysed, such as U- and g-value; they concern both the morphology of the envelope system, such as dimensions, shading and glazing type, gap airflow thickness, in-gap airflow rate, and management, in terms of control algorithm parameters tuning fan and shading systems, as a function of the weather conditions. The configuration able to provide the best performances was finally identified by also assessing such performances, integrating the dynamic system in several building types and under different weather conditions. The dynamic envelope system prototype has become a commercial product with some applications in facade systems, curtain walls and windows. The paper describes the methodological approach to prototype development and the main results obtained, including simulations of possible applications on real buildings. (author)

Lollini, R. [Institute for Renewable Energy, EURAC Research, Viale Druso 1, I-39100 Bolzano (Italy); Danza, L.; Meroni, I. [ITC-CNR, Construction Technologies Institute - Italian National Research Council, Via Lombardia, 49 - 20098 San Giuliano Milanese (MI) (Italy)

2010-04-15T23:59:59.000Z

134

Lessons learned on closed cavity thermophotovoltaic system efficiency measurements  

DOE Green Energy (OSTI)

Previous efficiency measurements have highlighted that to accurately measure and predict thermophotovoltaic (TPV) integrated cell or array efficiencies, a thorough understanding of the system is required. This includes knowledge of intrinsic diode and filter characteristics, radiative surface properties of all materials used within the cavity, and an intimate knowledge of the radiator/photon source. As a result of these and other lessons learned, the cavity test fixture used in earlier experiments was redesigned. To reduce radiator temperature gradients, the radiator was oversized and thickened, cavity walls were eliminated, the diode heat sink and shielding material were separated, and the cold side was redesigned to incorporate a steady state heat absorbed measurement technique. This redesigned test fixture provides an isothermal radiator and significantly enhances calorimetry capabilities. This newly designed cavity test fixture, in conjunction with the Monte Carlo Photon Transport code RACER-X, was used to improve and demonstrate the understanding of in-cavity TPV diode/module system efficiency testing. A single TPV diode was tested in this new fixture and yielded good agreement between measurements and predictions.

Gethers, C.K.; Ballinger, C.T.; DePoy, D.M. [Lockheed Martin Corp., Schenectady, NY (United States)

1998-10-01T23:59:59.000Z

135

Transportation and Electrical Efficiency Potential in the State of Hawaii Using Existing Technologies  

Science Conference Proceedings (OSTI)

The purpose of this study on Hawaii's transportation and electrical efficiency options is to provide policy makers with a clearly defined set of options to capture the energy efficiency prize. Neoclassical prescriptions for implementation of energy policies using prices, taxes, regulation, and deregulation are well known but politically fraught, though authentic competition in the context of a least-cost strategy can be effective. Yet unknown to many analysts and policymakers is a powerful new portfolio ...

2005-10-31T23:59:59.000Z

136

An Overview of Liquid Fluoride Salt Heat Transport Systems  

SciTech Connect

Heat transport is central to all thermal-based forms of electricity generation. The ever increasing demand for higher thermal efficiency necessitates power generation cycles transitioning to progressively higher temperatures. Similarly, the desire to provide direct thermal coupling between heat sources and higher temperature chemical processes provides the underlying incentive to move toward higher temperature heat transfer loops. As the system temperature rises, the available materials and technology choices become progressively more limited. Superficially, fluoride salts at {approx}700 C resemble water at room temperature being optically transparent and having similar heat capacity, roughly three times the viscosity, and about twice the density. Fluoride salts are a leading candidate heat-transport material at high temperatures. Fluoride salts have been extensively used in specialized industrial processes for decades, yet they have not entered widespread deployment for general heat transport purposes. This report does not provide an exhaustive screening of potential heat transfer media and other high temperature liquids such as alkali metal carbonate eutectics or chloride salts may have economic or technological advantages. A particular advantage of fluoride salts is that the technology for their use is relatively mature as they were extensively studied during the 1940s-1970s as part of the U.S. Atomic Energy Commission's program to develop molten salt reactors (MSRs). However, the instrumentation, components, and practices for use of fluoride salts are not yet developed sufficiently for commercial implementation. This report provides an overview of the current understanding of the technologies involved in liquid salt heat transport (LSHT) along with providing references to the more detailed primary information resources. Much of the information presented here derives from the earlier MSR program. However, technology has evolved over the intervening years, and this report also describes more recently developed technologies such as dry gas seals. This report also provides a high-level, parametric evaluation of LSHT loop performance to allow general intercomparisons between heat-transport fluid options as well as provide an overview of the properties and requirements for a representative loop. A compilation of relevant thermophysical properties of useful fluoride salts is also included for salt heat transport systems. Fluoride salts can be highly corrosive depending on the container materials selected, the salt chemistry, and the operating procedures used. The report includes an overview of the state-of-the-art in reduction-oxidation chemistry control methodologies employed to minimize corrosion issues. Salt chemistry control technology, however, remains at too low a level of understanding for widespread industrial usage. Loop operational issues such as start-up procedures and system freeze-up vulnerability are also discussed. Liquid fluoride salts are a leading candidate heat transport medium for high-temperature applications. This report provides an overview of the current status of liquid salt heat transport technology. The report includes a high-level, parametric evaluation of liquid fluoride salt heat transport loop performance to allow intercomparisons between heat-transport fluid options as well as providing an overview of the properties and requirements for a representative loop. Much of the information presented here derives from the earlier molten salt reactor program and a significant advantage of fluoride salts, as high temperature heat transport media is their consequent relative technological maturity. The report also includes a compilation of relevant thermophysical properties of useful heat transport fluoride salts. Fluoride salts are both thermally stable and with proper chemistry control can be relatively chemically inert. Fluoride salts can, however, be highly corrosive depending on the container materials selected, the salt chemistry, and the operating procedures used. The report also provides an over

Holcomb, David Eugene [ORNL; Cetiner, Mustafa Sacit [ORNL

2010-09-01T23:59:59.000Z

137

Texas Transportation Institute Texas A&M University System  

E-Print Network (OSTI)

Texas Transportation Institute Texas A&M University System Barbara Lorenz Program Coordinator Southwest Region University Transportation Center Texas Transportation Institute Texas A&M University System College Station, Texas 77843 b-lorenz@tamu.edu (979) 845-8861 Biography Barbara Lorenz is the Program

138

Texas Transportation Institute Texas A&M University System  

E-Print Network (OSTI)

Texas Transportation Institute Texas A&M University System Timothy J. Lomax, Ph.D., P.E. Research Engineer SWUTC Associate Director for Transportation Research at Texas A&M University Texas Transportation Institute Texas A&M University System College Station, Texas 77843 t-lomax@tamu.edu (979) 845-9960 Biography

139

Innovative technology summary report: Transportable vitrification system  

Science Conference Proceedings (OSTI)

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

140

Package Safety Analysis Assessment for Sludge Transportation System  

SciTech Connect

This package safety analysis assessment demonstrates that the Sludge Transportation System meets the acceptance criteria for an equivalent package as specified in DOE/RL-2001-36, Hanford Sitewide Transportation Safety Document for onsite shipment.

ROMANO, T.

2003-03-19T23:59:59.000Z

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.


141

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

142

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 of Hydrogen Fuel Cell Vehicle Technology and Prospects for the Future" P.T. Jones ­ "Dynamic Wireless Power

143

Convective heat transport in geothermal systems  

DOE Green Energy (OSTI)

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

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

1986-08-01T23:59:59.000Z

144

Coexistence and efficiency of normal and anomalous transport by molecular motors in living cells  

E-Print Network (OSTI)

Recent experiments reveal both passive subdiffusion of various nanoparticles and anomalous active transport of such particles by molecular motors in the molecularly crowded environment of living biological cells. Passive and active microrheology reveals that the origin of this anomalous dynamics is due to the viscoelasticity of the intracellular fluid. How do molecular motors perform in such a highly viscous, dissipative environment? Can we explain the observed co-existence of the anomalous transport of relatively large particles of 100 to 500 nm in size by kinesin motors with the normal transport of smaller particles by the same molecular motors? What is the efficiency of molecular motors in the anomalous transport regime? Here we answer these seemingly conflicting questions and consistently explain experimental findings in a generalization of the well-known continuous diffusion model for molecular motors with two conformational states in which viscoelastic effects are included.

Igor Goychuk; Vasyl O. Kharchenko; R. Metzler

2013-09-26T23:59:59.000Z

145

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

Science Conference Proceedings (OSTI)

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

146

Efficient thermal management for multiprocessor systems  

E-Print Network (OSTI)

2.2.4 Thermal Modeling . . . . . . . .63 Table 4.3: Thermal Hot Spots . . . . . . . . . . . . . .Performance-Efficient Thermal Management . . . . . . . . . .

Co?kun, Ay?e K?v?lc?m

2009-01-01T23:59:59.000Z

147

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

148

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

149

Improved fuel cell system for transportation applications  

DOE Patents (OSTI)

This invention is comprised of 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, R.; Ahmed, S.; Krumpelt, M.; Myles, M.K.

1991-12-31T23:59:59.000Z

150

TEXAS TRANSPORTATION INSTITUTE THE TEXAS A&M UNIVERSITY SYSTEM  

E-Print Network (OSTI)

that will begin to appear in metropolitan transportation plans (MTPs) in the near future. #12;- 3 - INTRODUCTIONTEXAS TRANSPORTATION INSTITUTE THE TEXAS A&M UNIVERSITY SYSTEM COLLEGE STATION, TEXAS Sponsored by the Capital Area Council of Governments August 2006 Transportation Institute Texas School Bus Biodiesel (B20

151

A mobile physiological monitoring system for patient transport  

Science Conference Proceedings (OSTI)

More and more intra-hospital transport of patients is required to perform special examination or therapy in recent years. The key point of all critical care transport is the continuous monitoring of vital signs. Also, with the growing popularity of wireless ... Keywords: Motes, RFID, Wireless sensor network, patient identification, patient transport, physiological monitoring, telemedicine system

Jui-Chi Shen; Dong-Her Shih; Hsiu-Sen Chiang; Shih-Bin Lin

2007-01-01T23:59:59.000Z

152

Transportation system requirements document. Revision 1 DCN01. Supplement  

SciTech Connect

The original Transportation System Requirements Document described 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 that document was to define the system-level requirements. These requirements include design and operations requirements to the extent they impact on the development of the physical segments of Transportation. The document also presented an overall description of Transportation, its functions, its segments, and the requirements allocated to the segments and the system-level interfaces with Transportation. This revision of the document contains only the pages that have been modified.

1995-05-01T23:59:59.000Z

153

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

154

Maritime Transportation System: Trends and Outlook  

E-Print Network (OSTI)

2007-R-5 Water is an essential resource in the U.S. economy. It plays a crucial role in supporting many economic activities and ensuring the quality of human life and the health of ecological systems. Despite this, the value of water may not be widely appreciated because only some water resources and water uses are easily visible or noticed while others are not. Among the Institute for Water Resources (IWR) Future Directions program activities are the identification of emerging water challenges and opportunities and the tactical engagement of U.S. Army Corps of Engineers (USACE) senior leaders on these issues. Such critical thinking is an essential prerequisite to strategy development and planning. IWR has developed this series of Water Resources Outlook papers, commissioned utilizing outside experts, to identify emerging issues and implications for the Nation. These issues and implications will be presented in the form of “provocation sessions ” with external and internal subject matter experts and stakeholders and will inform the USACE strategic planning process. Maritime Transportation System: Trends and Outlook USACE major responsibilities for waterborne commerce include dredging, development and maintenance of the inland and coastal waterways and related maritime infrastructure, and

unknown authors

2007-01-01T23:59:59.000Z

155

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

156

NETL: Gasification Systems - Advanced Hydrogen Transport Membranes...  

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

Advanced Hydrogen Transport Membranes for Coal Gasification Project No.: DE-FE0004908 Membranes shown (from top to bottom): ceramic support, activated and coated with palladium...

157

Pulp and Paper Mills: Profiting for Efficient Motor System Use...  

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

Motor System Use This profile discusses how energy efficienct motor systems can help pulp and paper mills save money. Pulp and Paper Mills: Profiting for Efficient Motor System Use...

158

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

159

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

160

Carbonless Transportation and Energy Storage in Future Energy Systems  

SciTech Connect

By 2050 world population is projected to stabilize near 10 billion. Global economic development will outpace this growth, achieving present European per capita living standards by quintupling the size of the global economy--and increasing energy use, especially electricity, substantially. Even with aggressive efficiency improvements, global electricity use will at least triple to 30 trillion kWh/yr in 2050. Direct use of fuels, with greater potential for efficiency improvement, may be held to 80 trillion kWh (289 EJ) annually, 50% above present levels (IPCC, 1996). Sustaining energy use at these or higher rates, while simultaneously stabilizing atmospheric greenhouse gas levels, will require massive deployment of carbon-conscious energy systems for electricity generation and transportation by the mid 21st Century. These systems will either involve a shift to non-fossil primary energy sources (such as solar, wind, biomass, nuclear, and hydroelectric) or continue to rely on fossil primary energy sources and sequester carbon emissions (Halmann, 1999). Both approaches share the need to convert, transmit, store and deliver energy to end-users through carbonless energy carriers.

Lamont, A.D.; Berry, G.D.

2001-01-17T23:59:59.000Z

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.


161

Efficiency of Steam and Hot Water Heat Distribution Systems  

E-Print Network (OSTI)

Efficiency of Steam and Hot Water Heat Distribution Systems Gary Phetteplace September 1995- tion medium (steam or hot water) and temperature for heat distribution systems. The report discusses the efficiency of both steam and hot water heat distribution systems in more detail. The results of several field

162

Energy efficiency strategies in refrigeration systems of large supermarkets  

Science Conference Proceedings (OSTI)

Energy efficiency and its relationship with sustainable development are one of the most important objectives in modern engineering systems. In Industrial Installations that use refrigeration systems that are associated with the food industry, this optimization ... Keywords: energy efficiency, optimizing parameters, refrigeration systems, supermarkets

J. M. Garcia; L. M. R. Coelho

2010-07-01T23:59:59.000Z

163

Modelling uncertainty in the sustainability of Intelligent Transport Systems for highways using probabilistic data fusion  

Science Conference Proceedings (OSTI)

The implementation of ITS to increase the efficiency of saturated highways has become increasingly prevalent. It is a high level objective for many international governments and operators that highways should be managed in a way that is both sustainable ... Keywords: Intelligent Transport Systems, Low carbon-energy policy, Uncertainty modelling

Ben Kolosz, Susan Grant-Muller, Karim Djemame

2013-11-01T23:59:59.000Z

164

Research on DCW-PSO Algorithm and Its Application in Intelligent Transportation Systems  

Science Conference Proceedings (OSTI)

Based on the urban traffic network’s real-time characteristic, a particle swarm optimization with dynamically changing weight (DCW-PSO) is adopted in order to search the optimal path quickly and efficiently. This algorithm brings in the factors ... Keywords: particle swarm optimization, intelligent transportation systems, dynamically changing weight

Wenjie Li; Kun Zhu

2009-08-01T23:59:59.000Z

165

Increase energy efficiency in systems and buildings and improve...  

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

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...

166

Center for Intelligent Systems Research GW Transportation Research Institute  

E-Print Network (OSTI)

Driving Simulator Laboratory Center for Intelligent Systems Research GW Transportation Research be employed in a number of other studies, such as: · Measuring the distraction potential of future in-vehicle intelligent transportation systems, · Determining the impact of road design on driver behavior

Vertes, Akos

167

Agent Tcl: A transportable agent system Robert S. Gray  

E-Print Network (OSTI)

Agent Tcl: A transportable agent system Robert S. Gray Department of Computer Science Dartmouth of Agent Tcl is to address the weaknesses of existing transportable-agent systems. Agent Tcl willrun describes the architecture of Agent Tcl and its current im- plementation and presents four information

168

Texas Transportation Institute Texas A&M University System  

E-Print Network (OSTI)

Texas Transportation Institute Texas A&M University System H. Gene Hawkins Jr., Ph.D., P Scholars, TAMU Texas Transportation Institute Texas A&M University System College Station, Texas 77843 of Zachry Civil Engineering at Texas A&M University, where he has served for the past seven years

169

Automated container transport system between inland port and terminals  

Science Conference Proceedings (OSTI)

In this article we propose a new concept called automated container transportation system between inland port and terminals (ACTIPOT) which involves the use of automated trucks to transfer containers between an inland port and container terminals. The ... Keywords: Automated container transportation system, Petri nets, automated truck, supervisory control, vehicle control

Jianlong Zhang; Petros A. Ioannou; Anastasios Chassiakos

2006-04-01T23:59:59.000Z

170

Embedded holonic fault diagnosis of complex transportation systems  

Science Conference Proceedings (OSTI)

The use of electronic equipment and embedded computing technologies in modern complex transportation systems continues to grow in a highly competitive market, in which product maintainability and availability is vital. These technological advances also ... Keywords: Cooperative fault diagnosis, Corrective maintenance, Embedded diagnosis, Holonic architecture, Model-based diagnosis, Railway transportation system

Antoine Le Mortellec; Joffrey Clarhaut; Yves Sallez; Thierry Berger; Damien Trentesaux

2013-01-01T23:59:59.000Z

171

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

172

To appeared in "Securing Transportation Systems, Protecting Critical Infrastructures Series (Book)", 2012 On the Rationality and Optimality of Transportation  

E-Print Network (OSTI)

To appeared in "Securing Transportation Systems, Protecting Critical Infrastructures Series (Book)", 2012 On the Rationality and Optimality of Transportation Networks Defense -- a Network Centrality Eng., Ben-Gurion University {puzis,elovici}@bgu.ac.il 3 Transportation Research Institute, Technion

173

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

174

Energy-efficient lighting system for television  

DOE Patents (OSTI)

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

Cawthorne, Duane C. (Amarillo, TX)

1987-07-21T23:59:59.000Z

175

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

E-Print Network (OSTI)

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

Bonnefoy, Philippe A

2008-01-01T23:59:59.000Z

176

Evaluation of Hydraulic Efficiency of Disinfection Systems Based on  

E-Print Network (OSTI)

time (TDT) and the rising limb of the residence time distribution (RTD) curve. This evaluation and scalar transport dynamics and subsequent RTD curve. The main objective of this study was to analyze, primarily a pipe loop system, pressurized tank system, and baffled tank system, from their respective RTD

177

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

178

Klystron "efficiency loop" for the ALS storage ring RF system  

E-Print Network (OSTI)

EFFICIENCY LOOP” FOR THE ALS STORAGE RING RF SYSTEM* S.at the Advanced Light Source (ALS) in order to decrease thethe cavities. 1 INTRODUCTION ALS Storage Ring RF system is

Kwiatkowski, Slawomir; Julian, Jim; Baptiste, Kenneth

2002-01-01T23:59:59.000Z

179

Power-efficient time-sensitive mapping in heterogeneous systems  

Science Conference Proceedings (OSTI)

Heterogeneous systems that contain multiple types of resources, such as CPUs and GPUs, are becoming increasingly popular thanks to the potential of achieving high performance and energy efficiency. In such systems, the problem of data mapping and communication ... Keywords: heterogeneous cpu/gpu multiprocessors, multi-core architectures, power-efficient scheduling

Cong Liu; Jian Li; Wei Huang; Juan Rubio; Evan Speight; Xiaozhu Lin

2012-09-01T23:59:59.000Z

180

Application of the Semi-Lagrangian Inherently Conserving and Efficient (SLICE) Transport Method to Divergent Flows on a C Grid  

Science Conference Proceedings (OSTI)

Local conservation with the Semi-Lagrangian Inherently Conserving and Efficient (SLICE) transport method with a new trajectory algorithm is studied. Validation results of 1D and 2D passive advection with this new algorithm, which converges twice ...

Ahmed Mahidjiba; Abdessamad Qaddouri; Jean Côté

2008-12-01T23:59:59.000Z

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.


181

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

E-Print Network (OSTI)

, Engines, and Emissions Research Center--analyzes power plant and vehicle performance and emissions extraordinary efficiencies by combining power generation with the recovery and use of thermal energy wasted by conventional power plants. FEMP emphasizes CHP systems for several reasons, among them: · Large CHP systems

182

TRANSPORTATION TRANSPORTATION  

E-Print Network (OSTI)

TEXASTRANS TEXAS TRANSPORTATION HALL HONOR OF HALL HONOR OF TEXASTRAN HALL HONOR OF TEXASTRAN HALL HONOR OF Inductees #12;2 TEXAS TRANSPORTATION HALL HONOR OF L NOR OF Texas is recognized as having one of the finest multimodal transportation systems in the world. The existence of this system has been key

183

AN ENERGY EFFICIENT WINDOW SYSTEM FINAL REPORT.  

E-Print Network (OSTI)

greenhouses, passive solar heating and other non-viewingpassive and active solar heating systems. the fact remainsthe expense of winter solar heating), Life Cycle Costing We

Authors, Various

2011-01-01T23:59:59.000Z

184

Scalable and Energy Efficient Computer Systems - Energy ...  

Technology Marketing Summary Computer engineers have developed a new design to support construction of large computer systems that perform closer to ...

185

Highly Efficient Electric Motor Systems - National Renewable ...  

Electric Motor Systems ... savings. Conical hubs Matching axial field poles. Issued Patents on Motor Geometry. 7 NREL Energy Forum November 2009 www.novatorque.com.

186

System of models for transport processes in layered strata  

Science Conference Proceedings (OSTI)

In this paper the normalized form of the generalized integral parabolic spline is described, which interpolates the integral averaged values of piecewise-smooth function. The three-dimensional system of partial differential equations as model of transport ... Keywords: conservative averaging, integral spline, layered media, three-dimensional, transport processes

Margarita Buike; Andris Buikis

2006-12-01T23:59:59.000Z

187

Conceptual design of an RTG Facility Transportation System  

DOE Green Energy (OSTI)

The conceptual design of an Radioisotope Thermoelectric Generator (RTG) Facility Transportation System which is part of the overall RTG Transportation System has been completed and is described in detail. The Facility Transportation System serves to provide locomotion, cooling, shock protection and data acquisition for the RTG package during loading and unloading sequences. The RTG Facility Transportation System consists of a Transporter Subsystem, a Package Cooling Subsystem, and a Shock Limiting Transit Device Subsystem. The Transporter Subsystem is a uniquely designed welded steel cart combined with a pneumatically-driven hand tug for locomotion. The Package Cooling Subsystem provides five kilowatts of active liquid cooling via an on-board refrigeration system. The Shock limiting Transit Device Subsystem consists of a consumable honeycomb transit frame which provides shock protection for the 3855 kg (8500 LB) RTG package. These subsystems have been combined into an integrated system which will facilitate the unloading and loading of the RTG , of the Transport Trailer as well as meet ALARA radiation Package into and out exposure guidelines.

Black, S.J.; Gentzlinger, R.C.; Lujan, R.E.

1994-06-03T23:59:59.000Z

188

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

189

Intelligent Transportation Systems Deployment Statistics Database  

E-Print Network (OSTI)

, transportation agencies in 108 metropolitan areas involved with freeway, arterial, and transit management, public to insights regarding future program changes, redefinition of goals, or maintenance of current program Aviation Safety Air Traffic Management Analysis Data, Statistical Analysis Geo-Spatial Information Tools

190

Nuclear reactor heat transport system component low friction support system  

SciTech Connect

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

Wade, Elman E. (Ruffs Dale, PA)

1980-01-01T23:59:59.000Z

191

Energy-efficient lighting system for television  

DOE Patents (OSTI)

A light control system for a television camera which adjusts the power to lamps illuminating the camera viewing area to provide only sufficient artificial illumination necessary to keep the camera iris substantially open is described.

Cawthorne, D.C.

1986-01-29T23:59:59.000Z

192

Efficient design methods for embedded communication systems  

Science Conference Proceedings (OSTI)

Nowadays, design of embedded systems is confronted with complex signal processing algorithms and a multitude of computational intensive multimedia applications, while time to product launch has been extremely reduced. Especially in the wireless domain, ...

M. Holzer; B. Knerr; P. Belanovi?; M. Rupp

2006-01-01T23:59:59.000Z

193

Communication architecture based power management for battery efficient system design  

Science Conference Proceedings (OSTI)

Communication-based power management (CBPM) is a new battery-driven system-level power management methodology in which the system-level communication architecture regulates the execution of various system components, with the aim of improving battery ... Keywords: battery efficiency, communication architectures, embedded systems, low power design, power management

Kanishka Lahiri; Sujit Dey; Anand Raghunathan

2002-06-01T23:59:59.000Z

194

Energy Policy and System Analysis - Center for Transportation...  

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

Energy Policy & System Analysis Technology roadmapping; Workforce development and green jobs; Database of State Incentives for Renewables & Efficiency (DSIRE); enabling physical...

195

Toward green systems for cleanrooms: Energy efficient fan-filter units  

E-Print Network (OSTI)

filter unit (FFU), energy efficiency, green system, electricToward Green Systems for Cleanrooms: Energy Efficient Fan-energy efficient models; Market transformation toward “green”

Jeng, Ming-Shan; Xu, Tengfang; Lan, Chao-Ho

2004-01-01T23:59:59.000Z

196

Energy Efficiency in Compressed Air Systems  

E-Print Network (OSTI)

Energy use in compressed air systems accounts for typically 10% of the total industrial electricity consumption. It also accounts for close to 99% of the CO2 footprint of an air compressor and approximately 80% of the life cycle costs of a compressor, over its lifetime. Considering these facts, it is sometimes surprising to see the lack of attention to compressed air systems in industry. This paper attempts to create awareness as to how a great deal of energy can be saved through a conscious process of selection and use of compressed air systems, bringing substantial benefits in economics and the environment. It also attempts to highlight the relative importance of energy savings over the costs of investments made in energy saving features and processes.

Hingorani, A.; Pavlov, A.

2010-01-01T23:59:59.000Z

197

Modeling and Optimization for Transportation Systems Planning and Operations  

E-Print Network (OSTI)

In this paper, we focus on a number of applications of network optimization techniques to transportation systems analysis. In particular, network analysis problems, network design problems, and network management problems ...

Gartner, Nathan H.

198

Concepts studies for future intracity air transportation systems  

E-Print Network (OSTI)

Summary: This report is concerned with describing the possible application of future air transportation systems within urban areas of the United States. The planning horizon extends to 1995 and the report focuses on the ...

Joint DOT-NASA Civil Aviation Research and Development Policy Study.; United States. National Aeronautics and Space Administration; Massachusetts Institute of Technology. Flight Transportation Laboratory

1970-01-01T23:59:59.000Z

199

World Energy Projection System Plus Model Documentation: Transportation Model  

Reports and Publications (EIA)

This report documents the objectives, analytical approach and development of the World Energy Projection System Plus (WEPS+) International Transportation model. It also catalogues and describes critical assumptions, computational methodology, parameter estimation techniques, and model source code.

Victoria Zaretskaya

2011-09-29T23:59:59.000Z

200

A systems analysis of scheduled air transportation networks  

E-Print Network (OSTI)

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

Swan, William M.

1979-01-01T23:59:59.000Z

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.


201

A Small Aircraft Transportation System (SATS) Demand Model  

Science Conference Proceedings (OSTI)

The Small Aircraft Transportation System (SATS) demand modeling is a tool that will be useful for decision makers to analyze SATS demands in both airport and airspace. We constructed a series of models following the general top- down, modular principles ...

Long Dou; Lee David; Johnson Jesse; Kostiuk Peter

2001-06-01T23:59:59.000Z

202

Secure and Efficient Routable Control Systems  

SciTech Connect

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

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

2010-05-01T23:59:59.000Z

203

A new challenge for the energy efficiency evaluation community: energy savings and emissions reductions from urban transportation policies  

E-Print Network (OSTI)

A new challenge for the energy efficiency evaluation community: energy savings and emissions reductions from urban transportation policies Dr. Jean-Sébastien BROC, Pr. Bernard BOURGES, Ecole des Mines de Nantes, France Abstract The energy efficiency evaluation community has a large experience about

Paris-Sud XI, Université de

204

ENERGY EFFICIENT SYSTEM DESIGN AND UTILIZATION  

E-Print Network (OSTI)

. This model as- sumes that the decision to transition to low power state can be made in only one state model assumes that a decision to transition into a lower-power state can be made upon each event, the whole system, or some of its components can be transitioned into low-power states using dynamic power

Simunic, Tajana

205

Energy Efficiency of Distributed Environmental Control Systems  

SciTech Connect

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

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

2011-02-23T23:59:59.000Z

206

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.

207

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.

208

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

209

Energy-efficient deadline scheduling for heterogeneous systems  

Science Conference Proceedings (OSTI)

Energy efficiency is a major concern in modern high performance computing (HPC) systems and a power-aware scheduling approach is a promising way to achieve that. While there are a number of studies in power-aware scheduling by means of dynamic power ... Keywords: Deadline scheduling, Energy efficiency, High performance computing, Pricing scheme

Yan Ma; Bin Gong; Ryo Sugihara; Rajesh Gupta

2012-12-01T23:59:59.000Z

210

INTEGRATED ENERGY EFFICIENT WINDOW-WALL SYSTEMS  

SciTech Connect

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

Michael Arney, Ph.D.

2002-12-31T23:59:59.000Z

211

High efficiency stoichiometric internal combustion engine system  

DOE Patents (OSTI)

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

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

2009-06-02T23:59:59.000Z

212

Assessing the Benefits and Costs of Intelligent Transportation Systems: The Value of Advanced Traveler Information Systems  

E-Print Network (OSTI)

Navigation, Full Cost of Transportation, Social CostsThe Social Costs of Intercity Passenger Transportation: ATransportation, Advanced Traveler Information Systems Introduction Recent literature has extensively discussed the social costs

Levinson, David; Gillen, David; Chang, Elva

1999-01-01T23:59:59.000Z

213

Workshop on technology issues of superconducting Maglev transportation systems  

DOE Green Energy (OSTI)

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

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

1991-09-27T23:59:59.000Z

214

Metering Air Compressor Systems for Efficiency: A Progress Report  

E-Print Network (OSTI)

Air compressors have energy efficiency quantified as SCFM/BHP. However, this efficiency fluctuates over a broad range based on the loading of the compressor. When multiple compressors operate with varying loads, as in a central plant, the overall system efficiency is totally unknown. With funding from California Energy Commission under the PIER Program, we spent considerable effort over the past few years to develop system efficiency for air compressor central plants. The system efficiency was termed CASE Index, which varies from 0 to about 320, and has the units of SCF/KWH. The procedure we developed, involved metering of input (KWH) and output (SCFM), in and out of the central plant. After the initial beta testing of the procedure, as more and more compressor professionals started to use the procedure and as more metering equipments entered the picture, some metering complications were encountered. These problems were dealt with and the procedure developed under this project can produce reliable data. This paper also presents the system efficiencies we have recorded so far and the opportunities they indicate. The data shows a wide range, from a low 82 to about 250 on a 0 to 320 scale. This confirms our expectations of large energy efficiency improvement potential in compressed air systems.

Joseph, B.

2005-01-01T23:59:59.000Z

215

A demand-responsive decision support system for coal transportation  

Science Conference Proceedings (OSTI)

In this paper, a demand-responsive decision support system is proposed by integrating the operations of coal shipment, coal stockpiles and coal railing within a whole system. A generic and flexible scheduling optimisation methodology is developed to ... Keywords: Coal shipment, Coal stockpiles, Coal train scheduling, Decision support system, Mine transportation

Erhan Kozan; Shi Qiang Liu

2012-12-01T23:59:59.000Z

216

Precipitation Efficiency of Warm-Season Midwestern Mesoscale Convective Systems  

Science Conference Proceedings (OSTI)

The precipitation efficiencies for mesoscale convective systems (MCS) over the central United States are calculated. During July–September 2000 and June–September 2001, 24 MCS for which sufficient data were available occurred over or near ...

Patrick Market; Stacy Allen; Roderick Scofield; Robert Kuligowski; Arnold Gruber

2003-12-01T23:59:59.000Z

217

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,

218

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.

219

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

220

Energy efficiency in wireless communication systems  

SciTech Connect

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

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

Secondary ion collection and transport system for ion microprobe  

DOE Patents (OSTI)

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

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

1985-01-01T23:59:59.000Z

222

Efficient Power Profiling for Battery-Driven Embedded System Design  

E-Print Network (OSTI)

The ability to efficiently and accurately estimate battery life under different design choices at the system level is an important aid in designing battery-efficient systems. Recently developed battery models help by estimating battery life under given profiles of the battery discharge current over time. However, existing techniques for energy (or average power) estimation do not provide sufficient information (such as time profiles of system power consumption) to drive battery-life estimation. Techniques that are capable of generating such profiles often lack the efficiency required to support exploration at the system level. In this paper, we describe techniques for efficient generation of system-level power profiles, for use in a battery-life estimation framework. Our power profiling technique allows a designer to experiment with: 1) the mapping of system tasks to a set of architectural components and 2) the mapping of system communications to a specified communication architecture, and efficiently generate system power profiles for each alternative. The resulting profiles can then be analyzed using existing battery models to estimate battery lifetime and capacity. Extensive experiments conducted on an IEEE 802.11 MAC processor design demonstrate that our power profiler offers orders of magnitude improvement in runtimes over state-of-the-art cosimulation-based power estimation techniques, while suffering minimal loss of accuracy (average profiling error was 3.8%).

Kanishka Lahiri; Anand Raghunathan; Senior Member; Sujit Dey

2004-01-01T23:59:59.000Z

223

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

E-Print Network (OSTI)

comparison of VAV and VRF air conditioning systems in anThe variable refrigerant flow (VRF) and ground source heatthe energy efficiency of VRF systems compared with GSHP

Hong, Tainzhen

2010-01-01T23:59:59.000Z

224

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

225

Washington State Department of Transportation energy efficiency guidelines for small buildings  

SciTech Connect

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

1995-03-01T23:59:59.000Z

226

WIPP waste acceptance criteria and transportation system  

Science Conference Proceedings (OSTI)

The Waste Isolation Pilot Plant (WIPP), located near Carlsbad, New Mexico, USA, is a US Department of Energy (DOE) facility designed as a permanent repository for transuranic wastes in the center of a 2,000-foot-thick salt bed situated 2,150 feet underground. Construction of the facility started in 1975, under a congressional act of site selection. In 1979, demonstration of safe disposal at the WIPP was authorized by Public Law 96-164. The operational philosophy and practice at the facility are: (1) start clean -- stay clean, (2) meet or exceed regulatory requirements, and (3) control radiation exposure levels to as low as reasonably achievable (ALARA). Strict safety measures must be taken in the areas of waste preparation, transportation, and facility operation.

Wu, C.F.; Ward, T.R.; Gregory, P.C.

1991-12-31T23:59:59.000Z

227

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

228

Transportation functions of the Civilian Radioactive Waste Management System  

SciTech Connect

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

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

1992-03-01T23:59:59.000Z

229

Passive vapor transport solar heating systems  

DOE Green Energy (OSTI)

In the systems under consideration, refrigerant is evaporated in a solar collector and condensed in thermal storage for space or water heating located within the building at a level below that of the collector. Condensed liquid is lifted to an accumulator above the collector by the vapor pressure generated in the collector. Tests of two systems are described, and it is concluded that one of these systems offers distinct advantages.

Hedstrom, J.C.; Neeper, D.A.

1985-01-01T23:59:59.000Z

230

Preliminary Transportation, Aging and Disposal Canister System Performance Specification  

SciTech Connect

This document provides specifications for selected system components of the Transportation, Aging and Disposal (TAD) canister-based system. A list of system specified components and ancillary components are included in Section 1.2. The TAD canister, in conjunction with specialized overpacks will accomplish a number of functions in the management and disposal of spent nuclear fuel. Some of these functions will be accomplished at purchaser sites where commercial spent nuclear fuel (CSNF) is stored, and some will be performed within the Office of Civilian Radioactive Waste Management (OCRWM) transportation and disposal system. This document contains only those requirements unique to applications within Department of Energy's (DOE's) system. DOE recognizes that TAD canisters may have to perform similar functions at purchaser sites. Requirements to meet reactor functions, such as on-site dry storage, handling, and loading for transportation, are expected to be similar to commercially available canister-based systems. This document is intended to be referenced in the license application for the Monitored Geologic Repository (MGR). As such, the requirements cited herein are needed for TAD system use in OCRWM's disposal system. This document contains specifications for the TAD canister, transportation overpack and aging overpack. The remaining components and equipment that are unique to the OCRWM system or for similar purchaser applications will be supplied by others.

C.A Kouts

2006-11-22T23:59:59.000Z

231

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

Science Conference Proceedings (OSTI)

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

MCCOY, J.C.

1999-03-16T23:59:59.000Z

232

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

233

Designing a beam transport system for RHIC's electron lens  

SciTech Connect

We designed two electron lenses to apply head-on beam-beam compensation for RHIC; they will be installed near IP10. The electron-beam transport system is an important subsystem of the entire electron-lens system. Electrons are transported from the electron gun to the main solenoid and further to the collector. The system must allow for changes of the electron beam size inside the superconducting magnet, and for changes of the electron position by 5 mm in the horizontal- and vertical-planes.

Gu, X.; Pikin, A.; Okamura, M.; Fischer, W.; Luo, Y.; Gupta, R.; Hock, J.; Raparia, D.

2011-03-28T23:59:59.000Z

234

Pulse thermal energy transport/storage system  

DOE Patents (OSTI)

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

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

1992-07-07T23:59:59.000Z

235

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

236

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 and addresses opportunities to improve performance every step of the way, including boiler maintenance, optimization, benchmarking, water treatment, and energy efficiency services. The handbook will include a checklist of items that operators should look for to improve their steam system's performance. This IETC paper will introduce the new CIBO handbook and describe its contents. The paper will also explain how the handbook is intended to be used.

Bessette, R. D.

1997-04-01T23:59:59.000Z

237

Efficient simulation of hybrid systems: A hybrid bond graph approach  

Science Conference Proceedings (OSTI)

Accurate and efficient simulations facilitate cost-effective design and analysis of large, complex, embedded systems, whose behaviors are typically hybrid, i.e. continuous behaviors interspersed with discrete mode changes. In this paper we present an ... Keywords: component-oriented modeling, dynamic causal assignment, hybrid bond graphs, modeling and simulation environments, simulation of hybrid systems

Indranil Roychoudhury; Matthew J Daigle; Gautam Biswas; Xenofon Koutsoukos

2011-06-01T23:59:59.000Z

238

Engineering intracellular active transport systems as in vivo biomolecular tools.  

DOE Green Energy (OSTI)

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

239

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":""}]}

240

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

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

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; Bansal, Pradeep [ORNL; Zha, Shitong [Hillphoenix

2013-01-01T23:59:59.000Z

242

A High Efficiency PSOFC/ATS-Gas Turbine Power System  

DOE Green Energy (OSTI)

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

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

2001-02-01T23:59:59.000Z

243

Transportation and Climate Change: The Potential for Hydrogen Systems  

DOE Green Energy (OSTI)

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

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

2004-03-31T23:59:59.000Z

244

Identifying Efficiency Degrading Faults in Split Air Conditioning Systems  

E-Print Network (OSTI)

Studies estimate that as much as 50% of packaged air conditioning systems operate in faulty conditions that degrade system efficiency. Common faults include: under- and over-charged systems (too much or too little refrigerant), faulty expansions valves (stuck valves, valve hunting, poorly tuned valve controllers), and fouled evaporators and condensers. Furthermore, air conditioning systems can often be adjusted to improve efficiency while continuing to meet cooling loads (adjusting system pressures, decreasing superheat setpoints). This study presents the design of a low cost device that can non-invasively measure system operating conditions, diagnose faults, estimate potential energy savings, and provide recommendations on how the system should be adjusted or repaired. Using eight external temperature measurements, the device potentially can detect and diagnose up to ten faults commonly found in HVAC systems. Steady state temperatures are compared to threshold values obtained from literature and HVAC manufacturers to detect and determine the severity of faults and subsequent reductions in coefficient of performance. Preliminary tests reveal the potential for the device to detect and diagnose common efficiency-degrading faults in HVAC systems.

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

2013-01-01T23:59:59.000Z

245

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

246

Advanced system analysis for indirect methanol fuel cell power plants for transportation applications  

DOE Green Energy (OSTI)

The indirect methanol cell fuel concept actively pursued by the USDOE and General Motors Corporation proposes the development of an electrochemical engine'' (e.c.e.), an electrical generator capable for usually efficient and clean power production from methanol fuel for the transportation sector. This on-board generator works in consort with batteries to provide electrical power to drive propulsion motors for a range of electric vehicles. Success in this technology could do much to improve impacted environmental areas and to convert part of the transportation fleet to natural gas- and coal-derived methanol as the fuel source. These developments parallel work in Europe and Japan where various fuel cell powered vehicles, often fueled with tanked or hydride hydrogen, are under active development. Transportation applications present design challenges that are distinctly different from utility requirements, the thrust of most of previous fuel cell programs. In both cases, high conversion efficiency (fuel to electricity) is essential. However, transportation requirements dictate as well designs for high power densities, rapid transients including short times for system start up, and consumer safety. The e.c.e. system is formed from four interacting components: (1) the fuel processor; (2) the fuel cell stack; (3) the air compression and decompression device; and (4) the condensing cross flow heat exchange device. 2 figs.

Vanderborgh, N.E.; McFarland, R.D.; Huff, J.R.

1990-01-01T23:59:59.000Z

247

Advanced system analysis for indirect methanol fuel cell power plants for transportation applications  

SciTech Connect

The indirect methanol cell fuel concept actively pursued by the USDOE and General Motors Corporation proposes the development of an electrochemical engine'' (e.c.e.), an electrical generator capable for usually efficient and clean power production from methanol fuel for the transportation sector. This on-board generator works in consort with batteries to provide electrical power to drive propulsion motors for a range of electric vehicles. Success in this technology could do much to improve impacted environmental areas and to convert part of the transportation fleet to natural gas- and coal-derived methanol as the fuel source. These developments parallel work in Europe and Japan where various fuel cell powered vehicles, often fueled with tanked or hydride hydrogen, are under active development. Transportation applications present design challenges that are distinctly different from utility requirements, the thrust of most of previous fuel cell programs. In both cases, high conversion efficiency (fuel to electricity) is essential. However, transportation requirements dictate as well designs for high power densities, rapid transients including short times for system start up, and consumer safety. The e.c.e. system is formed from four interacting components: (1) the fuel processor; (2) the fuel cell stack; (3) the air compression and decompression device; and (4) the condensing cross flow heat exchange device. 2 figs.

Vanderborgh, N.E.; McFarland, R.D.; Huff, J.R.

1990-01-01T23:59:59.000Z

248

Quantum simulator of an open quantum system using superconducting qubits: exciton transport in photosynthetic complexes  

E-Print Network (OSTI)

Open quantum system approaches are widely used in the description of physical, chemical and biological systems. A famous example is electronic excitation transfer in the initial stage of photosynthesis, where harvested energy is transferred with remarkably high efficiency to a reaction center. This transport is affected by the motion of a structured vibrational environment, which makes simulations on a classical computer very demanding. Here we propose an analog quantum simulator of complex open system dynamics with a precisely engineered quantum environment. Our setup is based on superconducting circuits, a well established technology. As an example, we demonstrate that it is feasible to simulate exciton transport in the Fenna-Matthews-Olson photosynthetic complex. Our approach allows for a controllable single-molecule simulation and the investigation of energy transfer pathways as well as non-Markovian noise-correlation effects.

Sarah Mostame; Patrick Rebentrost; Alexander Eisfeld; Andrew J. Kerman; Dimitris I. Tsomokos; Alán Aspuru-Guzik

2011-06-08T23:59:59.000Z

249

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 of Public Buildings”, typical meteorological yearly data for Guangzhou were used and revised according to architectural character of Guangzhou West Tower. The energy efficiency design of a single skin façade and active airflow curtain wall was analyzed by a dynamic energy simulation tool and modified weather data. The payback period of initial investment in the façade system was evaluated based on simulation results. In addition, the results confirm the façade system scheme of Guangzhou West Tower.

Meng, Q.; Zhang, L.

2006-01-01T23:59:59.000Z

250

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 efficiency and availability. Proper control of boiler blowdown is also important to assure clean boiler surfaces without wasting water, heat, and chemicals. Recovering hot condensate for reuse as boiler feedwater is another means of improving system efficiency. Condensate which is contaminated with corrosion products or process chemicals, however, is ill fit for reuse; and steam which leaks from piping, valves, traps and connections cannot be recovered. Effective chemical treatment, in conjunction with mechanical system improvements, can assure that condensate can be safely returned and valuable energy recovered.

Bloom, D.

1999-05-01T23:59:59.000Z

251

An integrated multibody dynamics for land and marine transportation systems  

Science Conference Proceedings (OSTI)

Design of multipurpose, high mobility transportation system requires an effective integration of land, marine and space vehicles simulation. This integration poses many technical and operational requirement challenges during conceptual design, analysis, ... Keywords: dynamics, high mobility, multibody, multipurpose, operational scenarios, relative motions

Ashraf Zeid; Ly D. Nguyen

2010-07-01T23:59:59.000Z

252

Planning roadside infrastructure for information dissemination in intelligent transportation systems  

Science Conference Proceedings (OSTI)

We consider an intelligent transportation system where a given number of infrastructured nodes (called Dissemination Points, DPs) have to be deployed for disseminating information to vehicles in an urban area. We formulate our problem as a Maximum Coverage ... Keywords: Maximum coverage, Network deployment, Vehicular networks

O. Trullols; M. Fiore; C. Casetti; C. F. Chiasserini; J. M. Barcelo Ordinas

2010-03-01T23:59:59.000Z

253

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

254

Road Transportable Analytical Laboratory (RTAL) system: Volume I. Final report  

Science Conference Proceedings (OSTI)

This report describes a portable laboratory system for the analysis of soils, ground water, and surface waters for the detection and quantification of hazardous materials, organics, and radioactive contaminants. The goal of the Road Transportable Analytical Laboratory (RTAL) is a sample throughput of 20 samples per day, providing a full range of analysis on each sample within 16 hours of preparation with high accuracy.

Finger, S.M.; De Avila, J.C.; Keith, V.F.

1996-08-01T23:59:59.000Z

255

Transportation  

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

Transportation banner Home Agenda Awards Exhibitors Lodging Posters Registration T-Shirt Contest Transportation Workshops Contact Us User Meeting Archives Users' Executive...

256

Transportation  

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

Transportation Print banner Home Agenda Awards Exhibitors Lodging Posters Registration T-Shirt Contest Transportation Workshops Contact Us User Meeting Archives Users' Executive...

257

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

258

Maximizing efficiency of solar-powered systems by load matching  

Science Conference Proceedings (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

259

Toward green systems for cleanrooms: Energy efficient fan-filter units  

E-Print Network (OSTI)

Toward Green Systems for Cleanrooms: Energy Efficient Fan-FFU), energy efficiency, green system, electric power use,are challenges and benefits in green designs that integrate

Jeng, Ming-Shan; Xu, Tengfang; Lan, Chao-Ho

2004-01-01T23:59:59.000Z

260

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.

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

Radioisotope thermoelectric generator transportation system subsystem 143 software development plan  

DOE Green Energy (OSTI)

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

262

CLASSIFICATION OF THE MGR CARRIER/CASK TRANSPORT SYSTEM  

SciTech Connect

The purpose of this analysis is to document the Quality Assurance (QA) classification of the Monitored Geologic Repository (MGR) carrier/cask transport system 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-0333P, ''Quality Assurance Requirements and Description'' (QARD) (DOE 1998).

S.E. Salzman

1999-08-30T23:59:59.000Z

263

Demonstration of a transportable storage system for spent nuclear fuel  

Science Conference Proceedings (OSTI)

The purpose of this paper is to discuss the joint demonstration project between the Sacramento Municipal Utility District (SMUD) and the US Department of Energy (DOE) regarding the use of a transportable storage system for the long-term storage and subsequent transport of spent nuclear fuel. SMUD's Rancho Seco nuclear generating station was shut down permanently in June 1989. After the shutdown, SMUD began planning the decommissioning process, including the disposition of the spent nuclear fuel. Concurrently, Congress had directed the Secretary of Energy to develop a plan for the use of dual-purpose casks. Licensing and demonstrating a dual-purpose cask, or transportable storage system, would be a step toward achieving Congress's goal of demonstrating a technology that can be used to minimize the handling of spent nuclear fuel from the time the fuel is permanently removed from the reactor through to its ultimate disposal at a DOE facility. For SMUD, using a transportable storage system at the Rancho Seco Independent Spent-Fuel Storage Installation supports the goal of abandoning Rancho Seco's spent-fuel pool as decommissioning proceeds.

Shetler, J.R.; Miller, K.R.; Jones, R.E. (Sacramento Municipal Utility District, Herald, CA (United States))

1993-01-01T23:59:59.000Z

264

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

DOE Green Energy (OSTI)

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

Sara Ward; Michael A. Petrik

2004-07-28T23:59:59.000Z

265

High-efficiency multidetector system for tumor scanning  

SciTech Connect

A high-efficiency detector system developed especially for medical imaging has three specially cut Ge(Li) coaxial detectors (total volume 249 cm$sup 3$). At 122 keV, the peak efficiency is 93 percent of that of a 7.6 x 7.6 cm NaI (Tl) detector. Degradation of the paralleled energy resolution is avoided and resolution is improved by 35 percent over that of conventional output-summing techniques by gating the detector outputs. In effect this multiplexes them to a single line output. (auth)

Kirby, J.A.; Phelps, P.L.; Armantrout, G.A.; Sawyer, D.; Beck, R.N.

1975-11-18T23:59:59.000Z

266

Steam Power Partnership: Improving Steam System Efficiency Through Marketplace Partnerships  

E-Print Network (OSTI)

The Alliance to Save Energy, a national nonprofit organization based in Washington DC, and the U.S. Department of Energy are working with energy efficiency suppliers to promote the comprehensive upgrade of industrial steam systems. Like EPA's Green Lights and DOE's Motor Challenge, the Steam Power Partnership program will encourage industrial energy consumers to retrofit their steam plants wherever profitable. The Alliance has organized a "Steam Team" of trade associations, consulting engineering firms, and energy efficiency companies to help develop this public- private initiative.

Jones, T.

1997-04-01T23:59:59.000Z

267

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.

268

Transport coefficients for dense hard-disk systems  

E-Print Network (OSTI)

A study of the transport coefficients of a system of elastic hard disks, based on the use of Helfand-Einstein expressions is reported. The self-diffusion, the viscosity, and the heat conductivity are examined with averaging techniques especially appropriate for the use in event-driven molecular dynamics algorithms with periodic boundary conditions. The density and size dependence of the results is analyzed, and comparison with the predictions from Enskog's theory is carried out. In particular, the behavior of the transport coefficients in the vicinity of the fluid-solid transition is investigated and a striking power law divergence of the viscosity in this region is obtained, while all other examined transport coefficients show a drop in that density range.

Ramón García-Rojo; Stefan Luding; J. Javier Brey

2005-11-28T23:59:59.000Z

269

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

270

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.

271

Screening study on high temperature energy transport systems  

SciTech Connect

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

Graves, R.L.

1980-10-01T23:59:59.000Z

272

The modeling of mode choices of intercity freight transportation with the artificial neural networks and adaptive neuro-fuzzy inference system  

Science Conference Proceedings (OSTI)

Mode choice modeling is probably the most important element of transportation planning. It affects the general efficiency of travel and the allocation of resources. The development of mode choice models has recently witnessed significant advances in ... Keywords: Freight transportation, Fuzzy logic, Hybrid algorithm, Inference system, Mode choices, Neural networks, Neuro-fuzzy

Ahmet Tortum; Nadir Yayla; Mahir Gökda?

2009-04-01T23:59:59.000Z

273

An Efficient Vein Pattern-based Recognition System  

E-Print Network (OSTI)

This paper presents an efficient human recognition system based on vein pattern from the palma dorsa. A new absorption based technique has been proposed to collect good quality images with the help of a low cost camera and light source. The system automatically detects the region of interest from the image and does the necessary preprocessing to extract features. A Euclidean Distance based matching technique has been used for making the decision. It has been tested on a data set of 1750 image samples collected from 341 individuals. The accuracy of the verification system is found to be 99.26% with false rejection rate (FRR) of 0.03%.

Soni, Mohit; Rao, M S; Gupta, Phalguni

2010-01-01T23:59:59.000Z

274

Electrical Equipment Replacement: Energy Efficiency versus System Compatibility  

E-Print Network (OSTI)

Electrical equipment components are replaced every day because of failure, obsolescence, or upgrade. Because of technological gains, replacement components are typically more energy efficient than older equipment. Life cycle cost analyses encourage end users to select the most energy efficient equipment when replacing motors, motor drives, transformers, lamps, ballasts, etc., given costs associated with energy consumption when compared with installation. The selection of replacement parts that are compatible with existing system components and loads is critical. The purpose of this paper is to discuss fundamental electrical design principles often overlooked when replacing existing equipment with energy efficient models. NOTE: The views expressed in this paper are those of the author and do not necessarily reflect the views of the United States of America, the U. S. Department of Justice, or the Federal Bureau of Prisons.

Massey, G. W.

2005-01-01T23:59:59.000Z

275

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

276

Measure it, See it, Manage it: Using Real Time Data to Benchmark, Optimize, and Sustain System Energy Efficiency  

E-Print Network (OSTI)

Compressed Air System Energy Efficiency Study for Del Monteand Sustain System Energy Efficiency Thomas Taranto, Dataindustrial system energy efficiency - providing plant

Taranto, Thomas; McKane, Aimee; Amon, Ricardo; Maulhardt, Michael

2008-01-01T23:59:59.000Z

277

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

278

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

DOE Green Energy (OSTI)

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

Duffy, M.; Sandor, D.

2008-06-01T23:59:59.000Z

279

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

SciTech Connect

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

Duffy, M.; Sandor, D.

2008-06-01T23:59:59.000Z

280

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

E-Print Network (OSTI)

the state legislature, state agencies, local govern- ment,transportation projects. State agency and local governmentwell positioned to bring state agencies, along with federal,

Aberle, Barbara

2005-01-01T23:59:59.000Z

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.


281

Efficient Schemes for Reducing Numerical Dispersion in Modeling Multiphase Transport through Porous and Fractured Media  

E-Print Network (OSTI)

involved. These heat-transfer processes are complicated byprocesses of multiphase flow, chemical transport, and heat transfertransport, and heat transfer, we assume that these processes

Wu, Yu-Shu; Forsyth, Peter A.

2006-01-01T23:59:59.000Z

282

Inter-technology Effects in Intelligent Transportation Systems  

E-Print Network (OSTI)

This project examines the expected benefits of varying combinations of ITS applications: Freeway Service Patrol, Changeable Message Signs, and Ramp Metering. The research analyzes the simulated results of a stylized network in a microscopic traffic simulator. The traffic network includes parallel roadways, ramp meters and changeable message signs. We have tested these technologies in various combinations. We measure effectiveness and define a measure of inter-technology economies. In brief, it is found that additional technologies are sub-additive, and more benefits come from each technology in isolation than when it is bundled with other technologies. Keywords: Transportation System Management, Inter-technology Economies, Freeway Service Patrol, Changeable Message Signs, Ramp Metering, Intelligent Transportation Systems, Evaluation Levinson, Kanchi, and Gillen 2

David Levinson; David M Levinson; Sehsasai Kanchi; Seshasai Kanchi; David Gillen; David Gillen

2002-01-01T23:59:59.000Z

283

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

E-Print Network (OSTI)

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

Sussman, Joseph

284

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

285

Public Transport Dispatch and Decision Support System Based on Multi-Agent  

Science Conference Proceedings (OSTI)

In order to raise the level of automatization and intelligentization of urban public transport management, regarding the research and current status on application of urban public transport dispatch system as well as the weakness of it, from decision ... Keywords: Decision Support System (DSS), Multi-Agent System(MAS), Urban Public Transport Dispatch System

Zengzhen He; Qisen Zhang

2009-10-01T23:59:59.000Z

286

Financing; A Cost Effective Alternative When Upgrading Energy Efficient Systems  

E-Print Network (OSTI)

In the 1990's, many organizations are attempting to do more, faster, with less cost and improved quality. In many cases, this involves improving the efficiency of their systems. Increased competition is creating pressure to continuously improve 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 on investment to the owner in several years, through energy and demand savings, Power Utility rebates, maintenance savings and increased productivity, however, the initial capital expense required is cost prohibitive. Budget constraints, a lengthy and complicated approval process and large up-front capital requirements are only a few "road blocks" to improvement. In order to make an equipment acquisition, every company must consider how they will pay for it! How do companies acquire the equipment they need to be more competitive? One cost effective solution -FINANCING! There are numerous benefits to both the end user customer (Lessee) and the installing contractor from utilizing financing to upgrade or retrofit to energy efficient systems. It is possible to provide design, material, installation, maintenance and soft costs as well as positive cash flow to the end user by structuring financing terms and payments around the energy savings. A wide array of programs and services are offered by many different financial organizations.

Ertle, J. M.

1994-04-01T23:59:59.000Z

287

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

Science Conference Proceedings (OSTI)

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

288

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

SciTech Connect

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

NONE

1998-01-01T23:59:59.000Z

289

Efficient Bulk Data Replication for the Earth System Grid  

SciTech Connect

The Earth System Grid (ESG) community faces the difficult challenge of managing the distribution of massive data sets to thousands of scientists around the world. To move data replicas efficiently, the ESG has developed a data transfer management tool called the Bulk Data Mover (BDM). We describe the performance results of the current system and plans towards extending the techniques developed so far for the up- coming project, in which the ESG will employ advanced networks to move multi-TB datasets with the ulti- mate goal of helping researchers understand climate change and its potential impacts on world ecology and society.

Sim, Alex; Gunter, Dan; Natarajan, Vijaya; Shoshani, Arie; Williams, Dean; Long, Jeff; Hick, Jason; Lee, Jason; Dart, Eli

2010-03-10T23:59:59.000Z

290

Modeling of concentrated aqueous solutions: Efficient implementation of Pitzer equations in geochemical and reactive transport models  

Science Conference Proceedings (OSTI)

Modeling concentrated solutions demands the use of ion-interaction models such as Pitzer equations, which involve a large number of operations. Implementation of these models in large reactive transport simulations significantly increases the computation ... Keywords: Concentrated solutions, Evaporation of seawater, Geochemical modeling, HMW model, Invariant points, Object-oriented programming, Pitzer, Reactive transport modeling

S. A. Bea; J. Carrera; C. Ayora; F. Batlle

2010-04-01T23:59:59.000Z

291

Investigating potential efficiency improvement for light-duty transportation applications through simulation of an organic Rankine cycle for waste-heat recovery  

SciTech Connect

Modern diesel engines used in light-duty transportation applications have peak brake thermal efficiencies in the range of 40-42% for high-load operation with substantially lower efficiencies at realistic road-load conditions. Thermodynamic energy and exergy analysis reveals that the largest losses from these engines are due to heat loss and combustion irreversibility. Substantial improvement in overall engine efficiency requires reducing or recovering these losses. Unfortunately, much of the heat transfer either occurs at relatively low temperatures resulting in large entropy generation (such as in the air-charge cooler), is transferred to low-exergy flow streams (such as the oil and engine coolant), or is radiated or convected directly to the environment. While there are significant opportunities for recovery from the exhaust and EGR cooler for heavy-duty applications, the potential benefits of such a strategy for light-duty applications are unknown due to transient operation, low-load operation at typical driving conditions, and the added mass of the system. We have developed an organic Rankine cycle model using GT-Suite to investigate the potential for efficiency improvement through waste-heat recovery from the exhaust and EGR cooler of a light-duty diesel engine. Results from steady-state and drive-cycle simulations are presented, and we discuss strategies to address operational difficulties associated with transient drive cycles and competition between waste-heat recovery systems, turbochargers, aftertreatment devices, and other systems for the limited thermal resources.

Edwards, Kevin Dean [ORNL; Wagner, Robert M [ORNL

2010-01-01T23:59:59.000Z

292

Design, operation, and evaluation of the transportable vitrification system  

SciTech Connect

The Transportable Vitrification System (TVS) is a transportable melter system designed to demonstrate the treatment of low-level and mixed hazardous and radioactive wastes such as wastewater treatment sludges, contaminated soils and incinerator ash. The TVS is a large-scale, fully integrated vitrification system consisting of melter feed preparation, melter, offgas, service, and control modules. The TVS was tested with surrogate waste at the Clemson University Environmental Systems Engineering Department`s (ESED) DOE/Industry Center for Vitrification Research prior to being shipped to the DOE Oak Ridge Reservation (ORR) K-25 site for treatment of mixed waste. This testing, along with additional testing at ORR, proved that the TVS would be able to successfully treat mixed waste. These surrogate tests consistently produced glass that met the EPA Toxicity Characteristic Leaching Procedure (TCLP). Performance of the system resulted in acceptable emissions of regulated metals from the offgas system. The TVS is scheduled to begin mixed waste operations at ORR in June 1997.

Zamecnik, J.R.; Young, S.R.; Hansen, E.K.; Whitehouse, J.C.

1997-02-20T23:59:59.000Z

293

Pumping systems efficiency improvements flow straight to thebottom line  

SciTech Connect

Industrial electrical motors account for two-thirds of theUS industrial electricity usage. Pumping systems account for an estimated25 percent of this electrical motor consumption, while pumping systems inuse in US chemical facilities consume over 37,000 GWh/year, based on USDepartment of Energy (DOE) data. A study funded by DOE estimatespotential energy savings within the chemical industry alone ofapproximately 20 percent, representing an energy savings of over 7,500GWh/year, through industrial pumping systems optimization using existing,proven techniques and technologies. This energy savings potentialrepresents significant cost savings potential for industrial facilities.Additionally, it has been shown that energy efficiency improvements toindustrial systems usually provide improved reliability, improvedproductivity, and reduced environmental costs.

Tutterow, Vestal; Casada, Don; McKane, Aimee

2002-07-08T23:59:59.000Z

294

Fuel Cell/Turbine Ultra High Efficiency Power System  

DOE Green Energy (OSTI)

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

Hossein, Ghezel-Ayagh

2001-11-06T23:59:59.000Z

295

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

Science Conference Proceedings (OSTI)

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

296

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

E-Print Network (OSTI)

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

Dodder, Rebecca Susanne

2006-01-01T23:59:59.000Z

297

Transport in an Idealized Three-Gyre System with Application to the Adriatic Sea  

Science Conference Proceedings (OSTI)

Motivated by observations of surface drifters in the Adriatic Sea, transport in a three-gyre system is studied with the aid of dynamical systems techniques. Particular attention is paid to the issue of intergyre transport. The velocity field is ...

Irina I. Rypina; Michael G. Brown; Huseyin Koçak

2009-03-01T23:59:59.000Z

298

Optimizing the National TRU waste system transportation program.  

Science Conference Proceedings (OSTI)

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

299

System and method to determine electric motor efficiency nonintrusively  

Science Conference Proceedings (OSTI)

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

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

2011-08-30T23:59:59.000Z

300

Energy Efficient Steam Trapping of Trace Heating Systems  

E-Print Network (OSTI)

Since as many as 40-60% of a plant's steam traps may be used on steam tracer lines, it is essential to select the correct, properly sized 'traps'; to optimize the efficient removal of condensate while providing maximum heat transfer to maintain desired product temperatures and greatly reduce steam losses. Factors related to achieving uniform product temperatures and maximum heat transfer rates and energy efficiency are: 1.Types and Methods used for Steam Tracing; 2. Systematic heat balance required to achieve economic tracer lengths; 3. Maximum allowable trapping distance for specific applications 4.Data important to determine condensate loads; 5. Trap selection, sizing, good installation practices, and proper maintenance. Using an engineered approach to steam trapping of trace heating systems have resulted in stable tracer line temperatures while reducing steam consumption 10-50% with minimum maintenance.

Krueger, R. G.; Wilt, G. W.

1981-01-01T23:59:59.000Z

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

A low energy beam transport system for proton beam  

SciTech Connect

A low energy beam transport (LEBT) system has been built for a compact pulsed hadron source (CPHS) at Tsinghua University in China. The LEBT, consisting of two solenoids and three short-drift sections, transports a pulsed proton beam of 60 mA of energy of 50 keV to the entrance of a radio frequency quadrupole (RFQ). Measurement has shown a normalized RMS beam emittance less than 0.2 {pi} mm mrad at the end of the LEBT. Beam simulations were carried out to compare with the measurement and are in good agreement. Based on the successful CPHS LEBT development, a new LEBT for a China ADS projector has been designed. The features of the new design, including a beam chopper and beam simulations of the LEBT are presented and discussed along with CPHS LEBT development in this article.

Yang, Y. [Institute of Modern Physics, CAS, Lanzhou 730000 (China); University of Chinese Academy of Sciences, Beijing 100039 (China); Zhang, Z. M.; Wu, Q.; Zhang, W. H.; Ma, H. Y.; Sun, L. T.; Zhang, X. Z.; Liu, Z. W.; He, Y.; Zhao, H. W.; Xie, D. Z. [Institute of Modern Physics, CAS, Lanzhou 730000 (China)

2013-03-15T23:59:59.000Z

302

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

303

Nanocoatings for High-Efficiency Industrial Hydraulic and Tooling Systems  

Science Conference Proceedings (OSTI)

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

Clifton B. Higdon III

2011-01-07T23:59:59.000Z

304

A new framework for the development of AVL based transport monitoring system  

Science Conference Proceedings (OSTI)

Automated Vehicle Location (AVL) based Transport Monitoring System has created some interest to many researchers. Currently, the implementation of AVL based Transport Monitoring System rely on the Global Positioning System (GPS) data, which can produce ... Keywords: automated vehicle location (AVL), collaborative environment, multimedia communication, route optimization, scripting language, transport monitoring

S. Masrom; Siti Z. Z. Abidin; P. N. Hashimah; A. S. Abd. Rahman

2010-02-01T23:59:59.000Z

305

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.

306

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.

307

IEEE INTELLIGENT TRANSPORTATION SYSTEMS MAGAZINE 6 SUMMER 2010 Francisco J. Martinez  

E-Print Network (OSTI)

Transportation Systems (ITS). In this paper, we examine the impact of future ITS technologies on road safetyIEEE INTELLIGENT TRANSPORTATION SYSTEMS MAGAZINE · 6 · SUMMER 2010 Francisco J. Martinez University Digital Object Identifier 10.1109/MITS.2010.938166 © PHOTODISC #12;IEEE INTELLIGENT TRANSPORTATION SYSTEMS

Toh, C-K.

308

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":""}]}

309

An Efficient, Conservative, Monotonic Remapping for Semi-Lagrangian Transport Algorithms  

Science Conference Proceedings (OSTI)

A conservative and monotonic remapping algorithm is developed, which could be used as a component of a semi-Lagrangian transport scheme for numerical models of the atmosphere. The algorithm is a version of the monotonic piecewise parabolic ...

Miodrag Ran?i?

1995-04-01T23:59:59.000Z

310

Integrated Hydrogen and Intelligent Transportation Systems Evaluation for the California Department of Transportation  

E-Print Network (OSTI)

advanced vehicle types for addressing energy and environmental concerns associated with transportation include BEVs, hybrid electric

Lipman, Timothy; Shaheen, Susan

2005-01-01T23:59:59.000Z

311

Texas A&M Transportation Institute Texas A&M University System  

E-Print Network (OSTI)

Texas A&M Transportation Institute Texas A&M University System Dennis L. Christiansen, Ph.D., P.E. Director, Texas A&M Transportation Institute, and SWUTC Executive Committee Member Texas A&M Transportation-1713 Biography Dr. Christiansen is Director of the Texas A&M Transportation Institute. Dr. Christiansen has been

312

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

313

Method and system for efficiently searching an encoded vector index  

DOE Patents (OSTI)

Method and system aspects for efficiently searching an encoded vector index are provided. The aspects include the translation of a search query into a candidate bitmap, and the mapping of data from the candidate bitmap into a search result bitmap according to entry values in the encoded vector index. Further, the translation includes the setting of a bit in the candidate bitmap for each entry in a symbol table that corresponds to candidate of the search query. Also included in the mapping is the identification of a bit value in the candidate bitmap pointed to by an entry in an encoded vector.

Bui, Thuan Quang (Alameda, CA); Egan, Randy Lynn (Rochester, MN); Kathmann, Kevin James (Rochester, MN)

2001-09-04T23:59:59.000Z

314

The Exchange Value Embedded in a Transport System  

E-Print Network (OSTI)

Vershynina, A. : On the transport dimension of measures.optimal maps for Monge’s transport prob- lem as a limit ofQ. : Optimal paths related to transport problems. Commun.

Xia, Qinglan; Xu, Shaofeng

2010-01-01T23:59:59.000Z

315

Integrated system for coal-methanol liquefaction and slurry pipeline transportation. Final report. [In slurry transport  

DOE Green Energy (OSTI)

The engineering economics of an integrated coal-to-methanol conversion system and coal-in-methanol transportation system are examined, under the circumstances of the western coalfields, i.e., long distances from major markets and scarcity of water in the vicinity of the mines. The transportation economics are attractive, indicating tariffs of approximately 40 cents per million Btu per thousand miles for the coal-methanol pipeline vs 60 cents via coal-water pipelines and upwards of a dollar via rail. Energy consumption is also less in the coal-methanol pipeline than in the coal-water pipeline, and about equal to rail. It is also concluded that, by a proper marriage of the synthetic fuel (methanolization) plant to the slurrification plant, most, and in some cases all, of the water required by the synthetic fuel process can be supplied by the natural moisture of the coal itself. Thus, the only technology which presently exists and by which synthetic fuel from western coal can displace petroleum in the automotive fuel market is the integrated methanol conversion and tranportation system. The key element is the ability of the methanol slurry pipeline to accept and to deliver dry (1 to 5% moisture) coal, allowing the natural coal moisture to be used as synthesis feedstock in satisfaction of the large water requirement of any synthetic fuel plant. By virtue of these unique properties, this integrated system is seen as the only means in the foreseeable future whereby western coal can be converted to synthetic fuel and moved to distant markets.

Banks, W.F.; Davidson, J.K.; Horton, J.H.; Summers, C.W.

1980-03-31T23:59:59.000Z

316

Measured Performance of Energy-Efficient Computer Systems  

E-Print Network (OSTI)

The intent of this study is to explore the potential performance of both Energy Star computers/printers and add-on control devices individually, and their expected savings if collectively applied in a typical office building in a hot and humid climate. Recent surveys have shown that the use of personal computer systems in commercial office buildings is expanding rapidly. The energy consumption of such a growing end-use also has a significant impact on the total building power demand. In warmer climates, office equipment energy use has important implications for building cooling loads as well as those directly associated with computing tasks. Recently, the Environmental Protection Agency (EPA) has developed an Energy Star (ES) rating system intended to endorse more efficient equipment. To research the comparative performance of conventional and low-energy computer systems, four Energy Star computer systems and two computer systems equipped with energy saving devices were monitored for power demand. Comparative data on the test results are summarized. In addition, a brief analysis uses the DOE-2.1E computer simulation to examine the impact of the test results and HVAC interactions if generically applied to computer systems in a modern office building in Florida's climate.

Floyd, D. B.; Parker, D. S.

1996-01-01T23:59:59.000Z

317

Coherent Structures and Larval Transport in the California Current System  

E-Print Network (OSTI)

behavior upwelling winds imply offshore transport and thatparticles far offshore, so that when winds reverse they arecoastal winds drive ocean surface transport offshore,

Harrison, Cheryl S.

2012-01-01T23:59:59.000Z

318

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

Science Conference Proceedings (OSTI)

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

Ferrell, P.C.

1996-04-18T23:59:59.000Z

319

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

DOE Green Energy (OSTI)

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

Peter J. Blau

2000-04-26T23:59:59.000Z

320

Surrogater: A Simple Yet Efficient Document Condensation System  

E-Print Network (OSTI)

This paper describes Surrogater, a simple yet efficient document condensation system that is applicable for commercial use. The system consists of two components, a preprocessing component for automatic generation of key terms for a predefined topic, and a condensation component that produces the condensed versions of on-line documents. To evaluate its performance, we compared Surrogater with five other summarization technologies, including Searchable LEAD, a commercial product. Twenty topics across four domains were evaluated, totalling. 30 documents and 1800 summaries. A two-way ANOVA test suggested that Surrogater performed at least equally well, if not better, compared to other commercial or nearly commercial products. More significantly, the empirical comparison did not show any dramatic differences in performance between Surrogater and Searchable LEAD as reported in an earlier study (Brandow et al. 1995) 1.

Joe Zhou

1998-01-01T23:59:59.000Z

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

Environmental planning in Florida: Florida’s environmental screening tool: laying the technology foundation for efficient transportation decision making  

E-Print Network (OSTI)

of Transportation. Environmental Management Office, Interimof Transportation, Environmental Management Office, with

Roaza, Ruth

2003-01-01T23:59:59.000Z

322

Analytical performance of direct-hydrogen-fueled polymer electrolyte fuel cell (PEFC) systems for transportation applications.  

DOE Green Energy (OSTI)

The performance of a stand-alone polymer electrolyte fuel cell (PEFC) system directly fueled by hydrogen has been evaluated for transportation vehicles. The study was carried out using a systems analysis code and a vehicle analysis code. The systems code includes models for the various PEFC components and is applicable for steady-state and transient situations. At the design point the system efficiency is above 50% for a 50-kW system. The efficiency improves under partial load and approaches 60% at 40% load, as the fuel cell operating point moves to lower current densities on the V-I polarization curve. At much lower loads, the system efficiency drops because of the deterioration in the performance of the compressor, expander, and eventually the fuel cell. The system performance suffers at lower temperatures, as the V-I characteristic curve for the fuel cell shifts downward because of the increased ohmic losses. The results of the transient analysis indicate that the hydrogen-fueled PEFC system can start rather rapidly, within seconds from ambient conditions. However, the warm-up time constant to reach the design operating temperatures is about 180 s. It is important during this period for the coolant to bypass the system radiator until the coolant temperature approaches the design temperature for the fuel cell. The systems analysis code has been applied to two mid-size vehicles: the near-term Ford AIV Sable and the future P2000 vehicle. The results of this study show that the PEFC system in these vehicles can respond well to the demands of the FUDS and Highway driving cycles, with both warm and cold starting conditions. The results also show that the fuel-cell AIV Sable vehicle has impressive gains in fuel economy over that of the internal combustion engine vehicle. However, this vehicle will not be able to meet the PNGV goal of 80 mpg. On the other hand, the P2000 vehicle approaches this goal with variable efficiency of the compressor and expander. It is expected to exceed that goal by a big margin, if the efficiency of the compressor and expander can be maintained constant (at 0.8) over the power range of the fuel cell system.

Doss, E. D.

1998-06-02T23:59:59.000Z

323

Heat Transport in Groundwater Systems--Laboratory Model  

E-Print Network (OSTI)

Solar energy is a possible alternate energy source for space heating. A method of economic long term solar energy storage is needed. Researchers have proposed storing solar energy by heating water using solar collectors and injecting the hot water into groundwater aquifers for long term energy storage. Of paramount importance to the success of such a system is the quality and the behavior of the aquifer used for hot water storage. In general, the problem is to obtain an accurate prediction of the response of an aquifer system and its basic components to the operation of a system of injection and pumping wells which are transporting water at a notably different temperature than the natural groundwater. The injection of hot water into a groundwater storage system will have a pronounced effect on the specific storage and mass flow within the aquifer. These effects will result from differences in viscosity, density, specific heat, and thermal conductivity between the injected water and the natural groundwater. A complex system of energy and mass transport will result, making analytical solutions unattainable or very complex. The objective of this study was to develop a numerical simulation which would predict the pressure and temperature of water in a groundwater system at any time in response to the pumping and injecting of hot and cold water. A numerical model was developed in which the groundwater flow equation and the energy transport equation are solved simultaneously using a finite difference approximation for the time derivative and three-dimensional Galerkin-finite element approximations for the space derivatives. The use of a strict Galerkin approach led to unacceptable solution oscillations in sharp temperature front problems (i.e., problems where the temperature changes quickly over a small distance or time). Several techniques were tried in an attempt to correct the problem. Reduction of element and time step size proved ineffective in eliminating the sharp temperature front oscillation problem. An upstream weighting scheme corrected the oscillation problem, but resulted in an unacceptable smear of the sharp temperature front. A mass lumping scheme resulted in the best solution to sharp temperature front problems. The mass lumping scheme yielded solutions without the oscillation problem and with less smear than the upstream weighting scheme.

Reed, D. B.; Reddell, D. L.

1980-08-01T23:59:59.000Z

324

A review of the applications of agent technology in traffic and transportation systems  

Science Conference Proceedings (OSTI)

The agent computing paradigm is rapidly emerging as one of the powerful technologies for the development of largescale distributed systems to deal with the uncertainty in a dynamic environment. The domain of traffic and transportation systems is well ... Keywords: agents, intelligent transportation systems (ITS), mobile agent systems, multiagent systems (MAS)

Bo Chen; Harry H. Cheng

2010-06-01T23:59:59.000Z

325

Session Number XXXX Using an Intelligent Transportation System Data Archive to Improve  

E-Print Network (OSTI)

, it is essential that these future transportation professionals gain the knowledge necessary to properly analyzeSession Number XXXX Using an Intelligent Transportation System Data Archive to Improve Student Abstract The Portland, Oregon regional intelligent transportation systems (ITS) data archive (known

Bertini, Robert L.

326

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 and the operation of aircraft within a future air transportation system achieving these objectives. The conclusion Universität Berlin Department of Aeronautics and Astronautics Chair of Flight Guidance and Air Transportation

Berlin,Technische Universität

327

An energy-efficient, transport-controlled MAC protocol for wireless sensor networks  

Science Conference Proceedings (OSTI)

In wireless sensor networks (WSNs), one major cause of wasted energy is that the wireless network interface is always on to accept possible traffic. Many medium access control (MAC) protocols therefore adopted a periodic listen-and-sleep scheme to save ... Keywords: Congestion control, Medium access control, Transport control, Wireless sensor network

Jaesub Kim; Kyu Ho Park

2009-07-01T23:59:59.000Z

328

Energy Efficiency Labeling System & its Development in China  

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

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

329

Offshore loading-system design is aimed at higher efficiency  

SciTech Connect

Mobil Shipping and Transporation Co. has completed the design of an offshore loading system aimed at overcoming the limitations of existing terminals. The loading/mooring/storage system (LMS) is a semisubmersible vessel with ship mooring and loading facilities atop a box-shaped crude storage structure, which is well below the water line away from the effect of waves and clear of loading tankers' bows. The storage volume equals or exceeds that of a VLCC. There are 15 dual-purpose cargo/ballast tanks in the lower section with a control tower over the center tank. The loading system is designed to load 800,000 bbl of crude in about 12 hr. Each tank contains a diagonally suspended synthetic rubber diaphragm that will isolate crude from water ballast. Computer simulations based on North Sea weather data indicate that the LMS will allow marine loading efficiencies of at least 95Vertical Bar3< with total storage of a week's production or more. Other advantages of the LMS include the ability to moor shuttle tankers up to 200,000 dwt; self-contained repair and maintenance capabilities; and mobility. Variations of anchoring and riser systems for the LMS are discussed.

1978-05-08T23:59:59.000Z

330

Transport of polarized neutrons through magnetic noncoplanar layered systems  

SciTech Connect

The transport of neutrons through noncoplanar systems is shown to have a partly unidirectional character. To this end, the transmission of a three-layer magnetic film with a noncoplanar magnetization in the absence of applied magnetic field and the transmission of a two-layer magnetic film with a noncollinear magnetization in the presence of a magnetic field are calculated. The calculations demonstrate that, if the losses in the films are neglected, the transmissions in two opposite directions differ only for processes with and without spin flip. If these losses are taken into account, the total transmissions of a nonpolarized neutron beam in two opposite directions are also different. The consequences of these specific features of noncoplanar systems are discussed.

Ignatovich, V. K., E-mail: ignatovi@gmail.com; Nikitenko, Yu. V. [Joint Institute for Nuclear Research, Laboratory of Neutron Physics (Russian Federation); Fraerman, A. A. [Russian Academy of Sciences, Institute for Physics of Microstructures (Russian Federation)

2010-05-15T23:59:59.000Z

331

A technical modeler's interface for urbansim, a system for integrated land use, transportation, and environmental modeling  

Science Conference Proceedings (OSTI)

Patterns of land use and available transportation systems play a critical role in determining the economic vitality, livability, and sustainability of urban areas. Transportation interacts strongly with land use. For example, automobile-oriented development ...

Alan Borning; Paul Waddell

2004-05-01T23:59:59.000Z

332

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

333

Estimation of performance indices for the planning of sustainable transportation systems  

Science Conference Proceedings (OSTI)

In the context of sustainable transportation systems, previous studies have either focused only on the transportation systemor have not used a methodology that enables the treatment of incomplete, vague, and qualitative information associated with the ...

Alexander Paz, Pankaj Maheshwari, Pushkin Kachroo, Sajjad Ahmad

2013-01-01T23:59:59.000Z

334

Report on DOE Proposal ''Electronic Transport in Disordered Two Dimensional Electron Systems''  

Science Conference Proceedings (OSTI)

Under the support of the DOE grant, studied the electronic transport properties in an interacting two-dimensional electron system and the magneto-transport properties, such as giant magneto-resistance (GMR) or colossal magneto-resistance (CMR).

None

2004-03-31T23:59:59.000Z

335

COOLING FAN AND SYSTEM PERFORMANCE AND EFFICIENCY IMPROVEMENTS  

Science Conference Proceedings (OSTI)

Upcoming emissions regulations (Tiers 3, 4a and 4b) are imposing significantly higher heat loads on the cooling system than lesser regulated machines. This work was a suite of tasks aimed at reducing the parasitic losses of the cooling system, or improving the design process through six distinct tasks: 1. Develop an axial fan that will provide more airflow, with less input power and less noise. The initial plan was to use Genetic Algorithms to do an automated fan design, incorporating forward sweep for low noise. First and second generation concepts could not meet either performance or sound goals. An experienced turbomachinery designer, using a specialized CFD analysis program has taken over the design and has been able to demonstrate a 5% flow improvement (vs 10% goal) and 10% efficiency improvement (vs 10% goal) using blade twist only. 2. Fan shroud developments, using an 'aeroshroud' concept developed at Michigan State University. Performance testing at Michigan State University showed the design is capable of meeting the goal of a 10% increase in flow, but over a very narrow operating range of fan performance. The goal of 10% increase in fan efficiency was not met. Fan noise was reduced from 0 to 2dB, vs. a goal of 5dB at constant airflow. The narrow range of fan operating conditions affected by the aeroshroud makes this concept unattractive for further development at this time 3. Improved axial fan system modeling is needed to accommodate the numbers of cooling systems to be redesigned to meet lower emissions requirements. A CFD fan system modeling guide has been completed and transferred to design engineers. Current, uncontrolled modeling practices produce flow estimates in some cases within 5% of measured values, and in some cases within 25% of measured values. The techniques in the modeling guide reduced variability to the goal of + 5% for the case under study. 4. Demonstrate the performance and design versatility of a high performance fan. A 'swept blade mixed flow' fan was rapid prototyped from cast aluminum for a performance demonstration on a small construction machine. The fan was mounted directly in place of the conventional fan (relatively close to the engine). The goal was to provide equal airflow at constant fan speed, with 75% of the input power and 5 dB quieter than the conventional fan. The result was a significant loss in flow with the prototype due to its sensitivity to downstream blockage. This sensitivity to downstream blockage affects flow, efficiency, and noise all negatively, and further development was terminated. 5. Develop a high efficiency variable speed fan drive to replace existing slipping clutch style fan drives. The goal for this task was to provide a continuously variable speed fan drive with an efficiency of 95%+ at max speed, and losses no greater than at max speed as the fan speed would vary throughout its entire speed range. The process developed to quantify the fuel savings potential of a variable speed fan drive has produced a simple tool to predict the fuel savings of a variable speed drive, and has sparked significant interest in the use of variable speed fan drive for Tier 3 emissions compliant machines. The proposed dual ratio slipping clutch variable speed fan drive can provide a more efficient system than a conventional single ratio slipping clutch fan drive, but could not meet the established performance goals of this task, so this task was halted in a gate review prior to the start of detailed design. 6. Develop a cooling system air filtration device to allow the use of automotive style high performance heat exchangers currently in off road machines. The goal of this task was to provide a radiator air filtration system that could allow high fin density, louvered radiators to operate in a find dust application with the same resistance to fouling as a current production off-road radiator design. Initial sensitivity testing demonstrated that fan speed has a significant impact on the fouling of radiator cores due to fine dusts, so machines equipped with continuously variabl

Ronald Dupree

2005-07-31T23:59:59.000Z

336

SunShot Initiative: High-Efficiency Thermal Storage System for...  

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

Efficiency Thermal Storage System for Solar Plants to someone by E-mail Share SunShot Initiative: High-Efficiency Thermal Storage System for Solar Plants on Facebook Tweet about...

337

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

338

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 feeders, and major equipment and systems including compressed air. For the compressed air system, monitored data included compressor amps, electrical demand and consumption, pressure and airflow. The resulting UtiliTRACK® reports and graphs showed a significant variation in system efficiency depending upon the demand for air (day of week, time of day, production schedule) and which compressor or compressors were operating. By working with the boiler plant operators and making minor modifications to the existing compressor controls, the operating sequence was modified to maintain high system efficiency under all operating conditions. Monitored data after the changes were made showed a 20% reduction in compressed air system operating costs.

Holmes, W. A.

1998-04-01T23:59:59.000Z

339

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

Science Conference Proceedings (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

340

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

E-Print Network (OSTI)

sizing ? Cooling tower and condenser optimization ? Controland cooling tower or condenser fans. Figure 1 and Figure 2those with evaporative condensers are more efficient than

Xu, Tengfang

2005-01-01T23:59:59.000Z

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.


341

Modeling the Canadian Electric System to Analyze the CO2 Content of Electric Transportation Fuel  

Science Conference Proceedings (OSTI)

Replacing fossil fuel with electricity for transportation can play an important role in reducing CO2 emissions provided the electricity can be used efficiently and can be produced without emitting significant amounts of CO2. Canada offers a particularly attractive opportunity to replace fossil fuels with electricity in the transportation sector because Canada has historically generated electricity with low emissions of CO2 and because the transportation sector is responsible for a larger percentage of na...

2010-12-17T23:59:59.000Z

342

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

Science Conference Proceedings (OSTI)

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

343

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

DOE Green Energy (OSTI)

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

344

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

E-Print Network (OSTI)

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

Chester, David A.

345

Southern California Intelligent Transportation System Priority Corridor Action Summary  

E-Print Network (OSTI)

of the State Transportation Improvement Program (STIP).About 75 percent of the STIP will be Regional Improvement

Horan, Thomas

1999-01-01T23:59:59.000Z

346

Heat Transport in Groundwater Systems--Finite Element Model  

E-Print Network (OSTI)

Solar energy is a promising alternate energy source for space heating. A method of economic long term solar energy storage is needed. Researchers have proposed storing solar energy by injecting hot water heated using solar collectors into groundwater aquifers for long term energy storage. Analytical solutions are available that predict water temperatures as hot water is injected into a groundwater aquifer, but little field and laboratory data are available to verify these models. The objectives of this study were to construct a laboratory model to simulate hot water injection into a confined aquifer, to use data from the model to verify analytical solutions modeling this process, and to evaluate the effects of physical properties and design parameters on thermal recovery efficiency. Initial studies of hot water injection into underground reservoirs were done by the petroleum industry while studying secondary and tertiary oil recovery methods. These studies involved small laboratory models. Advances in computer technology made it possible to model these systems numerically. Many assumptions must be made to predict temperature distributions and thermal efficiencies using analytical models which are not required in numerical solutions. To simulate hot water injection into a confined aquifer, a laboratory model (a 1.8288 m deep, 0.2 radian sector tank, that was 7.01 m in the radial direction) was constructed. There were 39 temperature and 15 fluid pressure measuring locations through the model. Water was supplied to the model at a constant temperature and flow rate. The flow layer was composed of a fine grained Texblast blasting sand. Four runs were made. During the initial run, no heat transfer took place and the hydraulic conductivity was measured. Three runs were made where the heat transfer was monitored. Water level data from the heat transfer runs showed that as the temperature of the aquifer increased, the hydraulic conductivity increased. Temperature data indicated that the three radii closest to the well bore reached thermal equilibrium. The equilibrium temperature decreased as radius increased. From Run 1 to Run 2, the equilibrium temperature increased at each radius because a larger flow rate was used. A vertical thermal gradient existed in the flow layer with the less dense warm water floating out over the cooler more dense water initially in the model. During the pumping cycle, the temperatures gradually decreased. The temperature of the water as it was pumped out of the model was measured and the energy recovered was computed using the initial temperature as a reference. Various other temperatures were used as a base reference to calculate recovery efficiency. There were heat losses out the sides of the model. The assumption of angular symmetry made in all analytical solutions was therefore not met. For this reason, the analytical solutions showed adequate, but not great, agreement with the experimental temperature distributions. Using the analytical solutions, the effects of changing system design parameters were evaluated. Increasing thermal conductivity in the flow layer caused the temperature distribution to spread out but had no effect on thermal efficiency. Increasing the thermal conductivity in the confining layers caused the temperature profile to not move as far from the well, and decreased thermal efficiency. Injection rates are only indirectly related to thermal efficiency. The physical parameter having the greatest effect on thermal efficiency was the flow layer thickness. As thickness increased, thermal efficiency increased.

Grubaugh, E. K.; Reddell, D. L.

1980-08-01T23:59:59.000Z

347

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

348

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

Science Conference Proceedings (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

349

Development of a safe TRU transportation system (STRUTS) for DOE's TRU waste  

SciTech Connect

Transportation, the link between TRU waste generation and WIPP (Waste Isolation Pilot Project) and a vital link in the overall TRU waste management program, must be addressed. The program must have many facets: ensuring public and carrier acceptance, formation of a functional and current transportation data base, systems integration, maximum utilization of existing technology, and effective implementation and integration of the transport system into current and planned operational systems.

Edling, D.A.; Hopkins, D.R.; Walls, H.C.

1978-01-01T23:59:59.000Z

350

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

Science Conference Proceedings (OSTI)

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

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

2005-08-15T23:59:59.000Z

351

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

DOE Green Energy (OSTI)

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

Not Available

2008-08-01T23:59:59.000Z

352

Fuel Cell System for Transportation -- 2005 Cost Estimate  

Science Conference Proceedings (OSTI)

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

Wheeler, D.

2006-10-01T23:59:59.000Z

353

Investigation of the feasibility of a dual mode electric transportation system  

DOE Green Energy (OSTI)

A study is reported which explores the feasibility of a highway transportation system that electromagnetically transfers energy to vehicles from powered roadways for high-speed or long-range travel, and uses energy stored in the vehicles for other travel. The energy coupling between roadway and vehicle is functionally similar to a transformer. The roadway energy source is imbedded flush with the roadway surface. When vehicle's energy pickups are suspended over the source, energy is magnetically coupled through the clearance gap between source and pickup. Analyses and modeling indicated that adequate power can be efficiently coupled by the system. The economics of the system appear to be favorable, and no implementational problems were identified that would make the system impractical. In addition to the engineering development of the power system, including performance verification with prototype hardware, continuing efforts should further address the effects of stray magnetic fields, the compatibility of the system with existing automobiles, electrical safety, and the process of transition from the use of existing automobiles.

Bolger, J.G.; Kirsten, F.A.

1977-05-01T23:59:59.000Z

354

Energy Efficient Pump Control for an Offshore Oil Processing System Yang, Zhenyu; Soleiman, Kian ; Lhndorf, Bo  

E-Print Network (OSTI)

Energy Efficient Pump Control for an Offshore Oil Processing System Yang, Zhenyu; Soleiman, Kian. (2012). Energy Efficient Pump Control for an Offshore Oil Processing System: IFAC Workshop - Automatic of a pump system for an offshore oil processing system is investigated. The seawater is lifted up by a pump

Yang, Zhenyu

355

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

356

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.

2008-08-01T23:59:59.000Z

357

Fuels Performance Group: Center for Transportation Technologies and Systems  

DOE Green Energy (OSTI)

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

358

Transportation Energy Model of the World Energy Projection System ...  

U.S. Energy Information Administration (EIA)

The WEPS Transportation Energy Model is a structural accounting model for road, rail, air, domestic shipping, international shipping, and pipeline energy use.

359

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

SciTech Connect

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

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

2012-05-15T23:59:59.000Z

360

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

DOE Patents (OSTI)

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

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

2011-06-07T23:59:59.000Z

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.


361

National Waste Terminal Storage Program: potenial problems in the waste transportation system  

SciTech Connect

Potential problems are identified which may impact the planning, organization, and operation of nuclear waste transportation systems serving federal repositories. These system-level problems have the potential of seriously interfering with the overall OWI Transportation/Logistics Study objective of having a viable nuclear waste transportation system in 1985. This report includes recommended action and priority judgments to address these problems and minimize their impact. The potential problems identified as most important have consequences which may impact the overall state of future preparedness for transporting nuclear waste. Other important concerns relate to the imposition of unnecessarily severe and costly restrictions on nuclear waste transportation, public and carrier acceptance, and the involvement of interested parties in planning and decision-making. The major recommendation of this report is that the planning and development of the waste transportation system should be controlled by a central planning activity which anticipates the impact of uncertainties and undesirable events.

DeSteese, J.G.; Rhoads, R.E.

1977-12-01T23:59:59.000Z

362

Toward an understanding of vertical momentum transports in cloud system resolving model simulations of multiscale tropical convection  

Science Conference Proceedings (OSTI)

This study examines the characteristics of convective momentum transport (CMT) and gravity wave momentum transport (GWMT) in two-dimensional cloud-system resolving model simulations, including the relationships between the two transports. A linear ...

Tiffany A. Shaw; Todd P. Lane

363

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

364

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

365

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, T.D.

1991-12-31T23:59:59.000Z

366

Efficient transformations from geodetic to UTM coordinate systems  

Science Conference Proceedings (OSTI)

The problem of efficiently performing transformations from geocentric to geodetic coordinates has been addressed at previous DIS (Distributed Interactive Simulation) workshops. This paper extends the work presented at the 14th DIS Workshop. As a consequence of the new algorithm for geocentric to geodetic coordinate conversion, a subsequent conversion to Universal Transverse Mercator coordinates is made considerably more efficient. No additional trigonometric or square root evaluations are required and accuracy is not degraded.

Toms, R.M.

1996-08-07T23:59:59.000Z

367

Energy material transport, now through 2000, system characteristics and potential problems. Task 3. Final report - petroleum transportation  

SciTech Connect

This report contains a summary characterization of the petroleum transportation system and an assessment of some potential problems that may impact petroleum transportation in the United States during the balance of the century. A primary purpose of this task is to provide information and perspective that contribute to the evaluation of research and development needs and priorities in future programs. The system characterization in Section 3 includes a review of petroleum product movements, modal operations and comparisons, and transportation regulations and safety. This system overview summarizes domestic production and consumption scenarios to the year 2000. A median scenario based on published projections shows that the US will probably rely on foreign oil to supply between 40 and 50 percent of domestic petroleum needs throughout the balance of the century. Potential problems in petroleum transportation were identified by the analysis and prioritization of current issues. The relative priorities of problem concerns were judged on the basis of their overall impact on the system and the immediacy of this potential impact. Two classes of concern are distinguished: 1. Potential problems that appear to require new programmatic action, in addition to effort already committed, to minimize the possible future impact of these concerns. 2. Latent concerns that may increase or decrease in priority or entirely change in nature as they develop. While the trend of these concerns should be monitored, new program action does not appear necessary at this time.

DeSteese, J.G.

1979-03-01T23:59:59.000Z

368

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.

369

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

E-Print Network (OSTI)

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

Wang, Yu

370

Sources and transport systems for low energy extreme of ion implantation  

SciTech Connect

For the past seven years a joint research and development effort focusing on the design of steady state, intense ion sources has been in progress with the ultimate goal being to meet the two, energy extreme range needs of mega-electron-volt and 100's of electron-volt ion implanters. However, since the last Fortier is low energy ion implantation, focus of the endeavor has shifted to low energy ion implantation. For boron cluster source development, we started with molecular ions of decaborane (B{sub 10}H{sub 14}), octadecaborane (B{sub 18}H{sub 22}), and presently our focus is on carborane (C{sub 2}B{sub 10}H{sub 12}) ions developing methods for mitigating graphite deposition. Simultaneously, we are developing a pure boron ion source (without a working gas) that can form the basis for a novel, more efficient, plasma immersion source. Our Calutron-Berna ion source was converted into a universal source capable of switching between generating molecular phosphorous P{sub 4}{sup +}, high charge state ions, as well as other types of ions. Additionally, we have developed transport systems capable of transporting a very large variety of ion species, and simulations of a novel gasless/plasmaless ion beam deceleration method were also performed.

Hershcovitch, A.; Batalin, V.A.; Bugaev, A.S.; Gushenets, V.I.; Alexeyenko, O.; Gurkova, E.; Johnson, B.M.; Kolomiets, A.A.; Kropachev, G.N.; Kuibeda, R.P.; Kulevoy, T.V.; Masunov, E.S.; Oks, E.M.; Pershin, V.I.; Polozov, S.M.; Poole, H.J.; Seleznev, D.N.; Storozhenko, P.A.; Vizir, A.; Svarovski, A.Ya.; Yakushin, P.; Yushkov, G.Yu.

2010-06-06T23:59:59.000Z

371

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

372

Feed gas contaminant removal in ion transport membrane systems  

DOE Patents (OSTI)

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

373

Roof-and-attic system delivers year-round efficiency | ornl.gov  

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

at ORNL improves efficiency using controls for radiation, convection, and insulation, including a passive ventilation system that pulls air from the underbelly of the...

374

SBIR Project: "A High Efficiency PV to Hydrogen Energy System"  

DOE Green Energy (OSTI)

The potential public benefits from this project are significant. The project has identified a potential energy source for the nation’s future electricity and transportation needs that is entirely “home grown” and carbon free. As CPV enter the nation’s utility markets, the opportunity for this approach to be successful is greatly increased. Amonix strongly recommends further exploration of this project’s findings.

Slade, A; Turner, J; Stone, K; McConnell, R

2008-09-02T23:59:59.000Z

375

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

376

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

DOE Green Energy (OSTI)

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

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

2009-01-01T23:59:59.000Z

377

DANTSYS: A diffusion accelerated neutral particle transport code system  

SciTech Connect

The DANTSYS code package includes the following transport codes: ONEDANT, TWODANT, TWODANT/GQ, TWOHEX, and THREEDANT. The DANTSYS code package is a modular computer program package designed to solve the time-independent, multigroup discrete ordinates form of the boltzmann transport equation in several different geometries. The modular construction of the package separates the input processing, the transport equation solving, and the post processing (or edit) functions into distinct code modules: the Input Module, one or more Solver Modules, and the Edit Module, respectively. The Input and Edit Modules are very general in nature and are common to all the Solver Modules. The ONEDANT Solver Module contains a one-dimensional (slab, cylinder, and sphere), time-independent transport equation solver using the standard diamond-differencing method for space/angle discretization. Also included in the package are solver Modules named TWODANT, TWODANT/GQ, THREEDANT, and TWOHEX. The TWODANT Solver Module solves the time-independent two-dimensional transport equation using the diamond-differencing method for space/angle discretization. The authors have also introduced an adaptive weighted diamond differencing (AWDD) method for the spatial and angular discretization into TWODANT as an option. The TWOHEX Solver Module solves the time-independent two-dimensional transport equation on an equilateral triangle spatial mesh. The THREEDANT Solver Module solves the time independent, three-dimensional transport equation for XYZ and RZ{Theta} symmetries using both diamond differencing with set-to-zero fixup and the AWDD method. The TWODANT/GQ Solver Module solves the 2-D transport equation in XY and RZ symmetries using a spatial mesh of arbitrary quadrilaterals. The spatial differencing method is based upon the diamond differencing method with set-to-zero fixup with changes to accommodate the generalized spatial meshing.

Alcouffe, R.E.; Baker, R.S.; Brinkley, F.W.; Marr, D.R.; O`Dell, R.D.; Walters, W.F.

1995-06-01T23:59:59.000Z

378

Small Hydropower Systems: Energy Efficiency and Renewable Energy Clearinghouse  

DOE Green Energy (OSTI)

This fact sheet introduces consumers to small hydropower systems, and includes information on how the systems work and how to assess a stream site for hydropower suitability.

Nachman-Hunt, N.

2001-07-05T23:59:59.000Z

379

Energy efficiency improvements in Chinese compressed air systems  

E-Print Network (OSTI)

air system assessments and energy audits based on a systemaudit. These compressed air system assessments may be conducted by compressor manufacturers/distributors or energy

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

2008-01-01T23:59:59.000Z

380

Effects of energy constraints on transportation systems. [Twenty-six papers  

DOE Green Energy (OSTI)

Twenty-six papers are presented on a variety of topics including: energy and transportaton facts and figures; long-range planning under energy constraints; technology assessment of alternative fuels; energy efficiency of intercity passenger and freight movement; energy efficiency of intracity passenger movement; federal role; electrification of railroads; energy impact of the electric car in an urban enviroment; research needs and projects in progress--federal viewpoint; research needs in transportation energy conservation--data needs; and energy intensity of various transportation modes--an overview. A separate abstract was prepared for each of the papers for inclusion in Energy Research Abstracts (ERA) and in Energy Abstracts for Policy Analysis (EAPA).

Mittal, R. K. [ed.

1977-12-01T23:59:59.000Z

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.


381

Improving the Efficiency of Your Process Cooling System  

E-Print Network (OSTI)

Many industries require process cooling to achieve desired outcomes of specific processes. This cooling may come from cooling towers, once-through water, mechanical refrigeration, or cryogenic sources such as liquid nitrogen or dry ice. This paper deals primarily with mechanically-based process cooling. Based on the author's experiences, this category provides the greatest opportunity for energy efficiency improvement.

Baker, R.

2005-01-01T23:59:59.000Z

382

Environmental policymaking for air transportation : toward an emissions trading system.  

E-Print Network (OSTI)

??Aviation is at a turning point. Considerable improvements in aircraft emissions efficiencies are expected through technological improvements, air traffic management, and managerial strategies. But global… (more)

De Serres, Martine.

2007-01-01T23:59:59.000Z

383

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

384

Efficiency of critical incident management systems: Instrument development and validation  

Science Conference Proceedings (OSTI)

There is much literature in the area of emergency response management systems. Even so, there is in general a lacuna of literature that deals with the issue of measuring the effectiveness of such systems. The aim of this study is to develop and validate ... Keywords: Critical incident management system (CIMS), Decision support, Emergency response systems, Instrument, Measurement, Media richness theory, National incident management systems (NIMS), Validation

Jin Ki Kim; Raj Sharman; H. Raghav Rao; Shambhu Upadhyaya

2007-11-01T23:59:59.000Z

385

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

E-Print Network (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

2011-10-19T23:59:59.000Z

386

DEVELOPMENT OF THE REGIONAL INTELLIGENT TRANSPORTATION SYSTEMS ARCHITECTURE FOR THE SAN JUAN METROPOLITAN AREA Approved by:  

E-Print Network (OSTI)

Several regions around the United States and Puerto Rico have been facing increasingly complex problems related to their transportation systems. In many cases, the use of advanced technology and strategies collectively known as Intelligent Transportation Systems (ITS) have helped to substantially improve their transportation systems. The integration of all the ITS components in a framework is called the ITS system architecture and has usually been an important part of the success in improving the transportation system. This work presents the methodology followed to develop the regional ITS architecture for the San Juan Metropolitan Area. Initially, the region is described including the stakeholders group and identified needs. A description of user services, operational concepts and functional requirements is then presented. These steps lead to the presentation of the system architecture based upon the National ITS Architecture. At the end, the implications of the architecture in terms of planning and project development are discussed. i RESUMEN

María Isabel; Fernández González; Wilma Santiago

2006-01-01T23:59:59.000Z

387

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

E-Print Network (OSTI)

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

Tetteh, William Nii Adjetey

2007-01-01T23:59:59.000Z

388

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

389

High Quality Down Lighting Luminaire with 73% Overall System Efficiency  

Science Conference Proceedings (OSTI)

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 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

390

Design of control for efficiency of AUV power systems  

E-Print Network (OSTI)

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

Ware, Laura M. (Laura Marie)

2012-01-01T23:59:59.000Z

391

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

392

Efficient optimal design of uncertain discrete time dynamical systems  

Science Conference Proceedings (OSTI)

In this paper we consider the problem of optimal design of an uncertain discrete time nonlinear dynamical system. The problem is formulated using an a-posterori design criterion, which can account for uncertainties generated by the dynamics of the system ... Keywords: Discrete time dynamical systems, Optimal design, Randomized algorithms, Uncertain parameters

Chenxi Lin; Thordur Runolfsson

2012-10-01T23:59:59.000Z

393

POEM: Power-efficient Occupancy-based Energy Management System  

E-Print Network (OSTI)

for optimally controlling HVAC systems in buildings based on actual occupancy levels. POEM is comprised for Heating Ventilation and Air-Conditioning (HVAC) systems. Current HVAC systems only condition based are then fused with an occupancy prediction model us- ing a particle filter in order to determine the most

Cerpa, Alberto E.

394

Development of information and market creation mechanisms for promoting advanced energy efficient transportation technologies. Final report to the U.S. Department of Energy  

SciTech Connect

This report summarizes the work undertaken by ACEEE under the U.S. DOE project entitled ''Development of Information and Market Creation Mechanisms for Promoting Advanced Energy Efficient Transportation Technologies.'' A description of completed tasks is given, followed by recommendations and proposed next steps for ACEEE's work in this area.

DeCicco, John; Bradley, John; Richman, Nessa

2000-10-25T23:59:59.000Z

395

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

Science Conference Proceedings (OSTI)

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

396

Evaluation of energy-efficiency in lighting systems using sensor networks  

Science Conference Proceedings (OSTI)

In modern energy aware buildings, lighting control systems are put in place so to maximise the energy-efficiency of the lighting system without effecting the comfort of the occupant. In many cases this involves utilising a set of presence sensors, with ... Keywords: building, decision, efficiency, energy, lighting, network, sensor, support

Declan T. Delaney; Gregory M. P. O'Hare; Antonio G. Ruzzelli

2009-11-01T23:59:59.000Z

397

Statement of work for the immobilized high-level waste transportation system, Project W-464  

SciTech Connect

The objective of this Statement of Work (SOW) is to present the scope, the deliverables, the organization, the technical and schedule expectations for the development of a Package Design Criteria (PDC), cost and schedule estimate for the acquisition of a transportation system for the Immobilized High-Level Waste (IHLW). This transportation system which includes the truck, the trailer, and a shielded cask will be used for on-site transportation of the IHLW canisters from the private vendor vitrification facility to the Hanford Site interim storage facility, i.e., vaults 2 and 3 of the Canister Storage Building (CSB). This Statement of Work asks Waste Management Federal Services, Inc., Northwest Operations, to provide Project W-464 with a Design Criteria Document, plus a life-cycle schedule and cost estimate for the acquisition of a transportation system (shielded cask, truck, trailer) for IHLW on-site transportation.

Mouette, P.

1998-06-24T23:59:59.000Z

398

Lattice gas automata for flow and transport in geochemical systems  

Science Conference Proceedings (OSTI)

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

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

1992-01-01T23:59:59.000Z

399

Lattice gas automata for flow and transport in geochemical systems  

Science Conference Proceedings (OSTI)

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

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

1992-05-01T23:59:59.000Z

400

Improved security for commercial container transports using an innovative active RFID system  

Science Conference Proceedings (OSTI)

The huge number of containers daily involved in the global transportation system opens important logistic and security issues. The matter of improving the management of goods in the harbor and the serious vulnerability problem of containers are relevant ... Keywords: Electronic seals, RFID technology, Secure supply chain, Secure transport, Wireless communications

Francesco Rizzo; Marcello Barboni; Lorenzo Faggion; Graziano Azzalin; Marco Sironi

2011-05-01T23:59:59.000Z

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.


401

Generalized linear model-based expert system for estimating the cost of transportation projects  

Science Conference Proceedings (OSTI)

Timely effective cost management requires reliable cost estimates at every stage of project development. While underestimation of transportation costs seems to be a global trend, improving early cost prediction accuracy in estimates is difficult. This ... Keywords: Cost management, Expert system, Generalized linear model, Relational database, Transportation projects

Jui-Sheng Chou

2009-04-01T23:59:59.000Z

402

Coherent Structures and Larval Transport in the California Current System  

E-Print Network (OSTI)

and processes in the California Current System. Progress intransition in the California Current system. Part II:Lynn and J. J. Simpson. The California Current system: The

Harrison, Cheryl S.

2012-01-01T23:59:59.000Z

403

User Instructions for the Systems Assessment Capability, Rev. 1, Computer Codes Volume 1: Inventory, Release, and Transport Modules  

SciTech Connect

This document contains detailed user instructions for the transport codes for Rev. 1 of the System Assessment Capability.

Eslinger, Paul W.; Miley, Terri B.; Engel, David W.; Nichols, William E.; Gerhardstein, Lawrence H.; Strenge, Dennis L.; Lopresti, Charles A.; Wurstner, Signe K.

2004-09-12T23:59:59.000Z

404

New technology can improve electric power system efficiency and ...  

U.S. Energy Information Administration (EIA)

The term "smart grid" covers a range of devices and systems that leverage recent advances in digital technology and communications to ... Developing methods for ...

405

An efficient multi-channel wireless switching system  

E-Print Network (OSTI)

the scheduling operation in wireless switching systems. Thefor the local operation between a wireless switch port andoperations in interference-rich multi-channel wireless

Shim, Jaewook

2010-01-01T23:59:59.000Z

406

Transportation Efficiency Strategies  

Gasoline and Diesel Fuel Update (EIA)

for Medium- and Heavy-Duty Vehicles past present future Today Air Quality Climate Change Energy Sustainability Developing alternative fuel technology (vehicles and infrastructure)...

407

Efficiency Measures  

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

recommended steam system energy efficiency measures Based on analyses implementation of steam system energy efficiency measures is driven primarily by cost metrics payback period...

408

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

409

Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems  

E-Print Network (OSTI)

A multiplicity of autonomous terminals simultaneously transmits data streams to a compact array of antennas. The array uses imperfect channel-state information derived from transmitted pilots to extract the individual data streams. The power radiated by the terminals can be made inversely proportional to the square-root of the number of base station antennas with no reduction in performance. In contrast if perfect channel-state information were available the power could be made inversely proportional to the number of antennas. Lower capacity bounds for maximum-ratio combining (MRC), zero-forcing (ZF) and minimum mean-square error (MMSE) detection are derived. A MRC receiver normally performs worse than ZF and MMSE. However as power levels are reduced, the cross-talk introduced by the inferior maximum-ratio receiver eventually falls below the noise level and this simple receiver becomes a viable option. The tradeoff between the energy efficiency (as measured in bits/J) and spectral efficiency (as measured in b...

Ngo, Hien Quoc; Marzetta, Thomas L

2011-01-01T23:59:59.000Z

410

Pipelining with common operands for power-efficient linear systems  

Science Conference Proceedings (OSTI)

We propose a systematic pipelining method for a linear system to minimize power and maximize throughput, given a constraint on the number of pipeline stages and a set of resource constraints. Unlike most existing pipelining approaches, our method takes ... Keywords: common operand, linear system, operand sharing, pipelining, power

Daehong Kim; Dongwan Shin; Kiyoung Choi

2005-09-01T23:59:59.000Z

411

POEM: power-efficient occupancy-based energy management system  

Science Conference Proceedings (OSTI)

Buildings account for 40% of US primary energy consumption and 72% of electricity. Of this total, 50% of the energy consumed in buildings is used for Heating Ventilation and Air-Conditioning (HVAC) systems. Current HVAC systems only condition based on ... Keywords: HVAC, energy savings, occupancy, ventilation

Varick L. Erickson; Stefan Achleitner; Alberto E. Cerpa

2013-04-01T23:59:59.000Z

412

An efficient system for collaboration in tele-immersive environments  

Science Conference Proceedings (OSTI)

The paper describes the development of a high-performance system for visualizing complex scientific models in real-time. The architecure of the system is a client/server model, in which the simulator generates lists of 3D graphics objects in parallel ...

N. Jensen; S. Olbrich; H. Pralle; S. Raasch

2002-09-01T23:59:59.000Z

413

Direct Digital Control in Air Conditioning Systems for Energy Efficiency  

E-Print Network (OSTI)

With the rapid development of Intelligent Buildings (IB), the Building Automation System (BAS) has come to control and manage the equipment in the building more and more scientifically, economically and rationally, which can not only raise 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. In order to control and manage the air-conditioning systems effectively and take full use of energy-saving technology, we apply computer control to the system of air automation control. This paper discusses direct digital control (DDC) in the air conditioning system in buildings.

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

2006-01-01T23:59:59.000Z

414

Biological optimization systems for enhancing photosynthetic efficiency and methods of use  

DOE Patents (OSTI)

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

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

2012-11-06T23:59:59.000Z

415

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

Science Conference Proceedings (OSTI)

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

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

2010-01-01T23:59:59.000Z

416

High Efficiency, Ultra-Low Emission, Integrated Process Heater System  

Science Conference Proceedings (OSTI)

The team of TIAX LLC, ExxonMobil Research and Engineering Company, and Callidus Technologies, LLC conducted a six-year program to develop an ultra-low emission process heater burner and an advanced high efficiency heater design. This project addresses the critical need of process heater operators for reliable, economical emission reduction technologies to comply with stringent emission regulations, and for heater design alternatives that reduce process heater energy requirements without significant cost increase. The key project targets were NOx emissions of 10 ppm (@ 3% O2), and a heater thermal efficiency of 95 percent. The ultra low NOx burner was developed through a series of pilot-scale and field tests combined with computational fluid dynamic modeling to arrive at simultaneous low emissions and suitable flame shape and stability. Pilot scale tests were run at TIAX, at the 2 MMBtu/hr scale, and at Callidus at 8 MMBtu/hr. The full scale burner was installed on a 14 burner atmospheric pipestill furnace at an ExxonMobil refinery. A variety of burner configurations, gas tips and flame stabilizers were tested to determine the lowest emissions with acceptable flame shape and stability. The resulting NOx emissions were 22 ppm on average. Starting in 2001, Callidus commercialized the original ultra low NOx burner and made subsequent design improvements in a series of commercial burners evolving from the original concept and/or development. Emissions in the field with the ultra low-NOx burner over a broad spectrum of heater applications have varied from 5 ppm to 30 ppm depending on heater geometry, heater service, fuel and firing capacity. To date, 1550 of the original burners, and 2500 of subsequent generation burners have been sold by Callidus. The advanced heater design was developed by parametric evaluations of a variety of furnace and combustion air preheater configurations and technologies for enhancing convective and radiative heat transfer. The design evolution relied heavily on computational fluid dynamic predictions of design alternatives. The final design features modular separate radiant cells, each with one and two-side fired vertical tubes. The convection section configuration is vertical tube banks enclosed in the radiant channels. Commercial modular plate air preheaters are used. The predicted performance for the integrated advanced heater and Callidus burner is 95 percent efficiency with 9 ppm NOx emissions firing natural gas, and 12 ppm firing refinery gas. The total erected cost is less than a conventional heater with combustion air preheat.

Mason, Howard; Boral, Anindya; Chhotray, San; Martin, Matthew

2006-06-19T23:59:59.000Z

417

Minnesota Department of Transportation Strategic Vision  

E-Print Network (OSTI)

to create a safe, efficient and sustainable transportation system for the future. #12;Mission ProvideMinnesota Department of Transportation Strategic Vision #12;#12;Vision Global leader in transportation, committed to upholding public needs and collaboration with internal and external partners

Minnesota, University of

418

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

E-Print Network (OSTI)

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

Sussman, Joseph

419

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

E-Print Network (OSTI)

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

Zakaria, Zulina

2004-01-01T23:59:59.000Z

420

An Analysis of the Dynamics of the US Commercial Air Transportation System  

E-Print Network (OSTI)

Major trends in the airline industry are analyzed to highlight key dynamics that govern the US domestic air transportation system. The hypothesis is that air travel supply and demand equilibriums, a reliance on outside ...

Tam, Ryan

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

The Role of Momentum Transport in the Motion of a Quasi-Idealized Mesoscale Convective System  

Science Conference Proceedings (OSTI)

Momentum transport is examined in a simulated midlatitude mesoscale convective system (MCS) to investigate its contribution to MCS motion. Momentum budgets are computed using model output to quantify the role of specific processes in determining ...

Kelly M. Mahoney; Gary M. Lackmann; Matthew D. Parker

2009-10-01T23:59:59.000Z

422

Lipids in NanotechnologyChapter 6 Self-emulsifying Delivery Systems and Lipid Transport  

Science Conference Proceedings (OSTI)

Lipids in Nanotechnology Chapter 6 Self-emulsifying Delivery Systems and Lipid Transport Food Science Health Nutrition Biochemistry Processing eChapters Food Science & Technology Health - Nutrition - Biochemistry Processing 4F61726C

423

Energy Efficiency and Reliability in Wireless Biomedical Implant Systems  

E-Print Network (OSTI)

The use of wireless implant technology requires correct delivery of the vital physiological signs of the patient along with the energy management in power-constrained devices. Toward these goals, we present an augmentation protocol for the physical layer of the Medical Implant Communications Service (MICS) with focus on the energy efficiency of deployed devices over the MICS frequency band. The present protocol uses the rateless code with the Frequency Shift Keying (FSK) modulation scheme to overcome the reliability and power cost concerns in tiny implantable sensors due to the considerable attenuation of propagated signals across the human body. In addition, the protocol allows a fast start-up time for the transceiver circuitry. The main advantage of using rateless codes is to provide an inherent adaptive duty-cycling for power management, due to the flexibility of the rateless code rate. Analytical results demonstrate that an 80% energy saving is achievable with the proposed protocol when compared to the IE...

Abouei, Jamshid; Plataniotis, Konstantinos N; Pasupathy, Subbarayan

2011-01-01T23:59:59.000Z

424

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

425

Pulp and Paper Mills: Profiting from Efficient Motor System Use  

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

spends 3.6 billion or about 2.6% of its overall operating costs to operate electric motor systems-higher than any other 2- digit manufacturing SIC. Opportunities to effectively...

426

Direct address translation for virtual memory in energy-efficient embedded systems  

Science Conference Proceedings (OSTI)

This article presents a methodology for virtual memory support in energy-efficient embedded systems. A holistic approach is proposed, where the combined efforts of compiler, operating system, and hardware architecture achieve a significant system power ... Keywords: Low-power embedded systems, address translation, virtual memory

Xiangrong Zhou; Peter Petrov

2008-12-01T23:59:59.000Z

427

Transmission System Efficiency and Utilization Improvement: Summary of R&D Activity and Demonstration Projects  

Science Conference Proceedings (OSTI)

  This report compiles and summarizes the activities, findings, and main conclusions derived from the development of EPRI R&D Program 172 - Efficient Transmission Systems for a Carbon-Constrained World.BackgroundEPRI R&D Program 172, Efficient Transmission Systems for a Carbon-Constrained World, was initiated in 2008 and finalized in 2012. The main objective of the program was to assist utilities to prepare for operating a power-delivery system ...

2012-12-31T23:59:59.000Z

428

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

E-Print Network (OSTI)

of the implementation of transport technologies, though, the various technologies ­ such as bioethanol, battery electric. Improved energy conversion technologies with high temperature fuel cells such as SOFCs (Solid oxide fuel,78 - bioethanol 0,00 0,00 0,00 21,27 - electricity 0,00 0,00 0,00 3,16 3,16 Railroad 3,82 -6 3,60 10 3,23 5,61 5

429

Options for improving computing and data system support for HQ USTRANSCOM (Headquarters, US Transportation Command) deployment planning  

Science Conference Proceedings (OSTI)

The Decision Systems Research Section of the Oak Ridge National Laboratory (ORNL) is assisting the Deployment Systems Division of the Headquarters, US Transportation Command (HQ USTRANSCOM) with an evaluation of options for improving the computing and data systems support for deliberate and time-critical joint deployment planning. USTRANSCOM, which is a unified command (i.e., personnel are drawn from all the services), was created in the fall of 1987 to consolidate the functions of the former military transportation operating agencies (the Military Airlift Command, the Military Traffic Management Command, and the Military Sealift Command). An important factor in the creation of USTRANSCOM was the possibility of achieving more efficient joint deployment planning through consolidation of the computing and data systems used by the command's strategic mobility planners and operation center personnel. This report, the third in a series to be produced in the course of ORNL studies for USTRANSCOM, presents options for improving automation support for HQ USTRANSCOM deployment planning. The study covered methods for improving data concepts used in deployment databases, recommendations for extending the life of the Joint Deployment system, and alternatives for integrating HQ USTRANSCOM planning support with systems at MAC, MTMC, and MSC. 36 refs.

Not Available

1988-08-01T23:59:59.000Z

430

Sustainable Transportation  

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

The Office of Energy Efficiency and Renewable Energy (EERE) leads U.S. researchers and other partners in making transportation cleaner and more efficient through solutions that put electric drive...

431

A dynamic isotope power system for Space Exploration Initiative surface transport systems  

Science Conference Proceedings (OSTI)

The Dynamic Isotope Power System (DIPS) Demonstration Program, sponsored by the U.S. Department of Energy with support funding from NASA, is currently focused on the development of a standardized 2.5-kWe portable generator for multiple applications on the lunar or Martian surface. A variety of remote and mobile potential applications have been identified by NASA, including surface rovers for both short- and extended-duration missions, remote power to science packages, and backup to central base power. Recent work focused on refining the 2.5-kWe design and emphasizing the compatibility of the system with potential surface transport systems. Work included an evaluation of the design to ensure compatibility with the Martian atmosphere while imposing only a minor mass penalty on lunar operations. Additional work included a study performed to compare the DIPS with regenerative fuel cell systems for lunar mobile and remote power systems. Power requirements were reviewed and a modular system chosen for the comparison. 4 refs.

Hunt, M.E.; Harty, R.B.; Cataldo, R. (Rockwell International Corp., Rocketdyne Div., Canoga Park, CA (United States) NASA, Lewis Research Center, Cleveland, OH (United States))

1992-03-01T23:59:59.000Z

432

Starter systems designed for efficient air/gas comsumption  

Science Conference Proceedings (OSTI)

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

433

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

434

Integrated Hydrogen and Intelligent Transportation Systems Evaluation for the California Department of Transportation  

E-Print Network (OSTI)

concepts for the distributed generation of electrical powerthat combines distributed generation of electrical power andresource” (DER) or “distributed generation” systems include

Lipman, Timothy; Shaheen, Susan

2005-01-01T23:59:59.000Z

435

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

SciTech Connect

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

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

1997-06-01T23:59:59.000Z

436

Energy Efficient Free Cooling System for Data Centers  

Science Conference Proceedings (OSTI)

A data center is a facility used to keep computer related equipments. It is estimated that heat production rate of the data center is doubled in every two years and hence the inevitability of the cooling system gets increased. In due course power consumption ... Keywords: Performance ratio, Water Economizer, Air Economizer, Energy Consumption, Data Center

Christy Sujatha D.; Satheesh Abimannan

2011-11-01T23:59:59.000Z

437

Open source tool for energy saving and efficient system management  

Science Conference Proceedings (OSTI)

In order to improve power quality (PQ) techniques, efforts are made to develop smart sensors that can report near real-time data. Proprietary software and hardware on dedicated computers or servers processes these data and shows relevant information ... Keywords: arm architecture, embedded systems, energy saving optimization, power quality optimization

Consolación Gil; Pedro Sánchez; Francisco G. Montoya; Antonio L. Márquez

2011-07-01T23:59:59.000Z

438

Self-Adjustable Trust-Based Energy Efficient Routing for Smart Grid Systems  

Science Conference Proceedings (OSTI)

Smart Grid is the trend of next generation electrical power system which makes the power grid intelligent and energy efficient. It requires high level of network reliability to support two-way communication among electrical services, electrical units ... Keywords: Smart Grid, wireless mesh network, trust-based geographical routing, vulnearabilities and attacks, energy efficiency

Ming Xiang; Quan Bai; William Liu

2012-12-01T23:59:59.000Z

439

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

E-Print Network (OSTI)

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

Politècnica de Catalunya, Universitat

440

Commercial high efficiency dehumidification systems using heat pipes  

SciTech Connect

An improved heat pipe design using separately connected two-section one-way flow heat pipes with internal microgrooves instead of wicks is described. This design is now commercially available for use to increase the dehumidification capacity of air conditioning systems. The design also includes a method of introducing fresh air into buildings while recovering heat and controlling the humidity of the incoming air. Included are applications and case studies, load calculations and technical data, and installation, operation, and maintenance information.

1993-09-01T23:59:59.000Z

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.


441

Efficiency of a hybrid-type plasma-assisted fuel reformation system  

Science Conference Proceedings (OSTI)

The major advantages of a new plasma-assisted fuel reformation system are its cost effectiveness and technical efficiency. Applied Plasma Technologies has proposed its new highly efficient hybrid-type plasma-assisted system for organic fuel combustion and gasification. The system operates as a multimode multipurpose reactor in a wide range of plasma feedstock gases and turndown ratios. This system also has convenient and simultaneous feeding of several reagents in the reaction zone such as liquid fuels, coal, steam, and air. A special methodology has been developed for such a system in terms of heat balance evaluation and optimization. This methodology considers all existing and possible energy streams, which could influence the system's efficiency. The developed hybrid-type plasma system could be suitable for combustion applications, mobile and autonomous small- to mid-size liquid fuel and coal gasification modules, hydrogen-rich gas generators, waste-processing facilities, and plasma chemical reactors.

Matveev, I.B.; Serbin, S.I.; Lux, S.M. [Applied Plasma Technologies, Mclean, VA (USA)

2008-12-15T23:59:59.000Z

442

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

DOE Green Energy (OSTI)

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

443

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

444

Lunar dust transport and potential interactions with power system components  

DOE Green Energy (OSTI)

The lunar surface is covered by a thick blanket of fine dust. This dust may be readily suspended from the surface and transported by a variety of mechanisms. As a consequence, lunar dust can accumulate on sensitive power components, such as photovoltaic arrays and radiator surfaces, reducing their performance. In addition to natural mechanisms, human activities on the Moon will disturb significant amounts of lunar dust. Of all the mechanisms identified, the most serious is rocket launch and landing. The return of components from the Surveyor III provided a rare opportunity to observe the effects of the nearby landing of the Apollo 12 lunar module. The evidence proved that significant dust accumulation occurred on the Surveyor at a distance of 155 m. From available information on particle suspension and transport mechanisms, a series of models was developed to predict dust accumulation as a function of distance from the lunar module. The accumulation distribution was extrapolated to a future lunar lander scenario. These models indicate that accumulation is expected to be substantial even as far as 2 km from the landing site. Estimates of the performance penalties associated with lunar dust coverage on radiators and photovoltaic arrays are presented. Because of the lunar dust adhesive and cohesive properties, the most practical dust defensive strategy appears to be the protection of sensitive components from the arrival of lunar dust by location, orientation, or barriers.

Katzan, C.M.; Edwards, J.L.

1991-11-01T23:59:59.000Z

445

The Use of Transportable Processing Systems for the Treatment of Radioactive Nuclear Wastes  

Science Conference Proceedings (OSTI)

EnergySolutions has developed two major types of radioactive processing plants based on its experience in the USA and UK, and its exclusive North American access to the intellectual property and know-how developed over 50 years at the Sellafield nuclear site in the UK. Passive Secure Cells are a type of hot cell used in place of the Canyons typically used in US-designed radioactive facilities. They are used in permanent, large scale plants suitable for long term processing of large amounts of radioactive material. The more recently developed Transportable Processing Systems, which are the subject of this paper, are used for nuclear waste processing and clean-up when processing is expected to be complete within shorter timescales and when it is advantageous to be able to move the processing equipment amongst a series of geographically spread-out waste treatment sites. Such transportable systems avoid the construction of a monolithic waste processing plant which itself would require extensive decommissioning and clean-up when its mission is complete. This paper describes a range of transportable radioactive waste processing equipment that EnergySolutions and its partners have developed including: the portable MOSS drum-based waste grouting system, the skid mounted MILWPP large container waste grouting system, the IPAN skid-mounted waste fissile content non-destructive assay system, the Wiped Film Evaporator low liquid hold-up transportable evaporator system, the CCPU transportable solvent extraction cesium separation system, and the SEP mobile shielded cells for emptying radioactive debris from water-filled silos. Maximum use is made of proven, robust, and compact processing equipment such as centrifugal contactors, remote sampling systems, and cement grout feed and metering devices. Flexible, elastomer-based Hose-in-Hose assemblies and container-based transportable pump booster stations are used in conjunction with these transportable waste processing units for transferring radioactive waste from its source to the processing equipment. (authors)

Phillips, Ch.; Houghton, D.; Crawford, G. [EnergySolutions LLC., 2345 Stevens Drive, Richland, WA (United States)

2008-07-01T23:59:59.000Z

446

Advanced Vehicles Group: Center for Transportation Technologies and Systems  

DOE Green Energy (OSTI)

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

447

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.

448

Harnessing waste heat and reducing wasted lighting : three mechanical structures for efficient energy systems  

E-Print Network (OSTI)

This thesis presents three mechanical structures designed for efficient energy systems. In [3], Cooley presents a modification of a fluorescent lamp which allows it to detect nearby occupants and dim itself automatically. ...

Stronger, Brad A

2008-01-01T23:59:59.000Z

449

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

450

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 and other counties of Arabian Peninsula, reduced airflow can lead to reduction in water consumption as well, since during the summer season, the dry bulb temperature of the ambient air is higher than the incoming hot water temperature, and the air undergoes sensible cooling. This paper presents the findings of a study conducted in the Avenues mall, Kuwait. Initially, the CTs operated only at high speed, and on a typical summer day nearly one fourth of the make-up water was used for self cooling of air. The study based on measured data revealed that the use of VFD can reduce the water wastage for self-cooling of air by as much as 75% and overall water consumption by 18.6% while keeping the cooling system performance at design level.

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

2010-01-01T23:59:59.000Z

451

Efficient Numerical Methods for an Anisotropic, Nonisothermal, Two-Phase Transport Model of Proton Exchange Membrane Fuel Cell  

Science Conference Proceedings (OSTI)

We carry out model and numerical studies for a three-dimensional, anisotropic, nonisothermal, two-phase steady state transport model of proton exchange membrane fuel cell (PEMFC) in this paper. Besides fully addressing the conservation equations of mass, ... Keywords: Anisotropy, Combined finite element-upwind finite volume, Kirchhoff transformation, Newton's linearization, Nonisothermality, Proton exchange membrane fuel cell (PEMFC), Two-phase transport

Pengtao Sun

2012-04-01T23:59:59.000Z

452

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

453

Planning and Systems Analysis - Center for Transportation Analysis  

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

traffic congestion. ORNL has extensive expertise in developing and applying spatial decision support systems to such traffic forecasting and associated infrastructure investment...

454

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...

455

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

456

A comprehensive GIS-based poultry litter management system for nutrient management planning and litter transportation  

Science Conference Proceedings (OSTI)

Confined poultry (broiler) production in Alabama results in about 1.8 million tons of litter annually. Because poultry production mainly occurs in the Appalachian Plateau region of north Alabama, this region suffers from excessive land application of ... Keywords: Broiler litter, Comprehensive nutrient management plan, Decision support system, Geographic information system, Poultry litter, Transportation analysis

M. S. Kang; P. Srivastava; T. Tyson; J. P. Fulton; W. F. Owsley; K. H. Yoo

2008-12-01T23:59:59.000Z

457

Design of Vertical Transportation System Driven by Permanent Magnet Linear Synchronous Motor Signal Acquisition  

Science Conference Proceedings (OSTI)

Permanent Magnet Linear Synchronous Motor(PMLSM) Vertical Transportation system is a new kind of ropeless hoisting system. In addition to the complications of dynamic state characteristic, the examination of some signals is also very difficult. In this ... Keywords: PMLSM, Signal Acquisition, Hardware Designs, Software

Wang Chang Li; Zhang You Dong; Zhao Liang

2012-08-01T23:59:59.000Z

458

Nanocoatings for High-Efficiency Industrial and Tooling Systems  

Science Conference Proceedings (OSTI)

This industry-driven project was the result of a successful response by Eaton Corporation to a DOE/ITP Program industry call. It consisted of three phases in which ORNL participated. In addition to Eaton Corporation and ORNL (CRADA), the project team included Ames Laboratory, who developed the underlying concept for aluminum-magnesium-boron based nanocomposite coatings [1], and Greenleaf, a small tooling manufacturer in western Pennsylvania. This report focuses on the portion of this work that was conducted by ORNL in a CRADA with Eaton Corporation. A comprehensive final report for the entire effort, which ended in September 2010, has been prepared by Eaton Corporation. Phase I, “Proof of Concept” ran for one year (September 1, 2006 to September 30, 2007) during which the applicability of AlMgB14 single-phase and nanocomposite coatings on hydraulic material coupons and components as well as on tool inserts was demonstrated.. The coating processes used either plasma laser deposition (PLD) or physical vapor deposition (PVD). During Phase I, ORNL conducted laboratory-scale pin-on-disk and reciprocating pin-on-flat tests of coatings produced by PLD and PVD. Non-coated M2 tool steel was used as a baseline for comparison, and the material for the sliding counterface was Type 52100 bearing steel since it simulated the pump materials. Initial tests were run mainly in a commercial hydraulic fluid named Mobil DTE-24, but some tests were later run in a water-glycol mixture as well. A tribosystem analysis was conducted to define the operating conditions of pump components and to help develop simulative tests in Phase II. Phase II, “Coating Process Scale-up” was intended to use scaled-up process to generate prototype parts. This involved both PLD practices at Ames Lab, and a PVD scale-up study at Eaton using its production capable equipment. There was also a limited scale-up study at Greenleaf for the tooling application. ORNL continued to conduct friction and wear tests on process variants and developed tests to better simulate the applications of interest. ORNL also employed existing lubrication models to better understand hydraulic pump frictional behavior and test results. Phase III, “Functional Testing” focused on finalizing the strategy for commercialization of AlMgB14 coatings for both hydraulic and tooling systems. ORNL continued to provide tribology testing and analysis support for hydraulic pump applications. It included both laboratory-scale coupon testing and the analysis of friction and wear data from full component-level tests performed at Eaton Corp. Laboratory-scale tribology test methods are used to characterize the behavior of nanocomposite coatings prior to running them in full-sized hydraulic pumps. This task also includes developing tribosystems analyses, both to provide a better understanding of the performance of coated surfaces in alternate hydraulic fluids, and to help design useful laboratory protocols. Analysis also includes modeling the lubrication conditions and identifying the physical processes by which wear and friction of the contact interface changes over time. This final report summarizes ORNL’s portion of the nanocomposite coatings development effort and presents both generated data and the analyses that were used in the course of this effort.

Blau, P; Qu, J.; Higdon, C. (Eaton Corporation)

2011-02-01T23:59:59.000Z

459

Phase II Final Project Report SBIR Project: "A High Efficiency PV to Hydrogen Energy System"  

Science Conference Proceedings (OSTI)

The innovative research conducted for this project contributed greatly to the understanding of generating low-cost hydrogen from solar energy. The project’s research identified two highly leveraging and complementary pathways. The first pathway is to dramatically increase the efficiency of converting sunlight into electricity. Improving solar electric conversion efficiency directly increases hydrogen production. This project produced a world record efficiency for silicon solar cells and contributed to another world record efficiency for a solar concentrator module using multijunction solar cells. The project’s literature review identified a second pathway in which wasted heat from the solar concentration process augments the electrolysis process generating hydrogen. One way to do this is to use a “heat mirror” that reflects the heat-producing infrared and transmits the visible spectrum to the solar cells; this also increases solar cell conversion efficiency. An economic analysis of this concept confirms that, if long-term concentrator photovoltaic (CPV) and solid-oxide electrolyzer cost goals can be achieved, hydrogen will be produced from solar energy cheaper than the cost of gasoline. The potential public benefits from this project are significant. The project has identified a potential energy source for the nation’s future electricity and transportation needs that is entirely “home grown” and carbon free. As CPV enter the nation’s utility markets, the opportunity for this approach to be successful is greatly increased. Amonix strongly recommends further exploration of this project’s findings.

Slade, A; Turner, J; Stone, K; McConnell, R

2008-09-02T23:59:59.000Z

460

Evaluating passenger delays in the US domestic air transportation system  

E-Print Network (OSTI)

A fundamental component of any National Airspace System (NAS) performance evaluation is the cost impact of air traffic delays, and more generally capacity limitations, on the traveling passengers. In previous research it ...

Umang, Nitish

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.


461

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.

462

Assessing the Energy Efficiency of Small Transit Systems; A Case Study of the Miami Metro Bus Service.  

E-Print Network (OSTI)

??In the recent past there has been an emphasis on energy and fuel efficiency in transit systems across the United States. Transit systems continue to… (more)

Kazungu, Conny Sidi

2012-01-01T23:59:59.000Z

463

Environmental concerns influencing the future development of energy material transportation systems: the year 2000 study  

DOE Green Energy (OSTI)

This paper presents results of studies conducted to assess the potentially longer-range problems which could hinder the future development of safe and environmentally-acceptable energy material transportation systems. The purpose of this effort is to recommend appropriate action that contributes to the anticipatory management of possible future problems before they can have serious effects on the adequacy or acceptability of the system. Most significant future concerns in energy material transportation relate to potential institutional, legal, political and social problems. Environmental issues are involved in many of these concerns. Selected environmental concerns are discussed that may influence the future development of transportation systems for fossil and nuclear energy materials during the balance of this century. A distinction between potentially real and perceived concerns is made to emphasize basic differences in the recommended approach to solutions of the respective type of potential problem.

DeSteese, J. G.

1978-01-01T23:59:59.000Z

464

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,

465

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,

466

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 of the variable refrigerant volume multi-zone air conditioning system, and discusses the advantages of its application.

Zhu, H.

2006-01-01T23:59:59.000Z

467

Poster: INPRESS: indoor climate prediction and evaluation system for energy efficiency using sensor networks  

Science Conference Proceedings (OSTI)

Modern buildings include an indoor climate control system, installed and operated to maintain a comfortable environment for the building occupants. However, these climate control systems consume a significant amount of energy due to an inefficient control ... Keywords: energy efficiency, indoor climate, sensor network

Jae Yoon Chong; Jinwook Baek; Sukun Kim

2011-11-01T23:59:59.000Z

468

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

E-Print Network (OSTI)

control conditioning strategies. Using strategies based on sensor network occupancy model predictions, weOBSERVE: Occupancy-Based System for Efficient Reduction of HVAC Energy Varick L. Erickson, Miguel Á Descriptors I.6.5 [Simulation and Modeling]: Model Development; J.7 [Computers In Other Systems]: Command

Cerpa, Alberto E.

469

Decision system based on neural networks to optimize the energy efficiency of a petrochemical plant  

Science Conference Proceedings (OSTI)

The energy efficiency of industrial plants is an important issue in any type of business but particularly in the chemical industry. Not only is it important in order to reduce costs, but also it is necessary even more as a means of reducing the amount ... Keywords: Cost optimization, Crude oil distillation, Data mining, Decision system, Expert system, Neural network, Petrochemical plant

Iñigo Monedero; Félix Biscarri; Carlos León; Juan I. Guerrero; Rocio González; Luis Pérez-Lombard

2012-08-01T23:59:59.000Z

470

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

471

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

E-Print Network (OSTI)

Performance of ground source heat pump system in a near-zerosimulation tool for ground- source heat pump system designflow systems and ground source heat pump systems Abstract

Hong, Tainzhen

2010-01-01T23:59:59.000Z