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1

Trace 700 | Open Energy Information  

Open Energy Info (EERE)

Trace 700 Trace 700 Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Trace 700 Agency/Company /Organization: Trane Sector: Energy Focus Area: Buildings, Energy Efficiency Topics: Technology characterizations Resource Type: Software/modeling tools Website: www.trane.com/Commercial/Dna/View.aspx?i=1136 References: http://www.trane.com/Commercial/Dna/View.aspx?i=1136 Detailed HVAC design tool. Can provide heating and cooling load calculation, system sizing, and energy use. A fairly thorough understanding of HVAC is necessary to use this tool. Tool Summary LAUNCH TOOL Name: Trace 700 Agency/Company /Organization: Trane Phase: Create a Vision, Determine Baseline, "Evaluate Options and Determine Feasibility" is not in the list of possible values (Bring the Right People Together, Create a Vision, Determine Baseline, Evaluate Options, Develop Goals, Prepare a Plan, Get Feedback, Develop Finance and Implement Projects, Create Early Successes, Evaluate Effectiveness and Revise as Needed) for this property.

2

LLNL Energy Flow Charts | Open Energy Information  

Open Energy Info (EERE)

LLNL Energy Flow Charts LLNL Energy Flow Charts Jump to: navigation, search Tool Summary Name: LLNL Energy Flow Charts Agency/Company /Organization: Lawrence Livermore National Lab Sector: Energy Focus Area: Renewable Energy Topics: Pathways analysis References: LLNL Energy Flow Charts [1] Decision makers have long recognized the importance of visualizing energy and material flows in a way that distinguishes between resources, transformations and services. Research priorities can be defined in terms of changes to the flows, and the consequences of policy or technology shifts can be traced both upstream and downstream. The usefulness of this top-down view is limited by the level of detail that can be conveyed in a single image. We use two techniques to balance information content with readability. First we employe visualization

3

Method and apparatus for detecting and measuring trace impurities in flowing gases  

SciTech Connect

Trace impurities in flowing gases may be detected and measured by a dynamic atomic molecular emission spectrograph utilizing as its energy source the energy transfer reactions of metastable species, atomic or molecular, with the impurities in the flowing gas. An electronically metastable species which maintains a stable afterglow is formed and mixed with the flowing gas in a region downstream from and separate from the region in which the metastable species is formed. Impurity levels are determined quantitatively by the measurement of line and/or band intensity as a function of concentration employing emission spectroscopic techniques.

Taylor, Gene W. (Los Alamos, NM); Dowdy, Edward J. (Los Alamos, NM)

1979-01-01T23:59:59.000Z

4

Building Energy Software Tools Directory: TRACE 700  

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

700 700 TRACE 700 logo. Trane's TRACE 700 software - the latest version of Trane Air Conditioning Economics - brings the algorithms recommended by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) to the familiar Windows operating environment. Use it to assess the energy and economic impacts of building-related selections such as architectural features, comfort-system design, HVAC equipment selections, operating schedules, and financial options. Flexible data entry, coupled with multiple views and "drag-and-drop" load assignments, simplify the modeling process and help you identify optimal zoning and plant configurations. Compare up to four alternatives for a single project by modeling various air distribution and mechanical

5

A circuit theory based load flow tracing method considering counter-flow contribution  

Science Conference Proceedings (OSTI)

A new method to trace the power flow based on the converged AC power flow solution is proposed in this paper. The method is formulated by using the transmission network structure, the equivalent-current-injection and the load- equivalent-admittances ... Keywords: equivalent current injection, equivalent load impedance, generator contribution, line loss allocation

Whei-Min Lin; Tung-Sheng Zhan; Cong-Hui Huang

2006-04-01T23:59:59.000Z

6

Title Offline Trace Synchronization for Smartphone Energy Profiling  

E-Print Network (OSTI)

Energy profiling is a means to effectively understand the power behavior of smartphone applications. However, no tool that effectively combines portability, accuracy and automation has been proposed yet. In this thesis a new approach is proposed, which sets the basis for such a tool by solving a trace synchronization problem. TRAM (TRAce Merger) uses the event trace from a mobile device and the power trace from a measurement device. It synchronizes them offline, maps the mobile device events trace on the corresponding trace from the power measurement tool, and attributes energy consumption to smartphone functionalities. The event and power traces traces from these two systems contain timestamps based on the corresponding local clocks. Taking the aforementioned clocks inaccuracy and deviation into account, we synchronize these traces to extract useful information from their contents. We achieved energy consumption attribution to smartphone functionalities by solving this synchronization problem with milliseconds accuracy.

Ioannis Oikonomidis; Offline Trace; Synchronization Smartphone; Ioannis Oikonomidis; Msc Presentation

2013-01-01T23:59:59.000Z

7

US energy flow, 1991  

SciTech Connect

Trends in energy consumption and assessment of energy sources are discussed. Specific topics discussed include: energy flow charts; comparison of energy use with 1990 and earlier years; supply and demand of fossil fuels (oils, natural gas, coal); electrical supply and demand; and nuclear power.

Borg, I.Y.; Briggs, C.K.

1992-06-01T23:59:59.000Z

8

Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry  

E-Print Network (OSTI)

Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I.Skillicorn 1 Azimuthal asymmetry using energy flow method Azimuthal angle distribution at Q2 >100 GeV2 Energy flow method.Ukleja on behalf of the ZEUS Collaboration #12; Energy Flow Energy Flow Energy Flow A.Ukleja, T.Tymieniecka, I

9

Trace Element Analysis | Open Energy Information  

Open Energy Info (EERE)

Trace Element Analysis Trace Element Analysis Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Trace Element Analysis Details Activities (8) Areas (8) Regions (4) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: Fluid Lab Analysis Parent Exploration Technique: Fluid Lab Analysis Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Reconstructing the fluid circulation of a hydrothermal system Thermal: Cost Information Low-End Estimate (USD): 15.001,500 centUSD 0.015 kUSD 1.5e-5 MUSD 1.5e-8 TUSD / element Median Estimate (USD): 18.001,800 centUSD 0.018 kUSD 1.8e-5 MUSD 1.8e-8 TUSD / element High-End Estimate (USD): 106.0010,600 centUSD 0.106 kUSD 1.06e-4 MUSD 1.06e-7 TUSD / element

10

Building Energy Software Tools Directory: TRACE 700  

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

and Renewable Energy EERE Home | Programs & Offices | Consumer Information Building Energy Software Tools Directory Search Search Help Building Energy Software Tools Directory...

11

Tool for Rapid Assessment of City Energy (TRACE) | Open Energy Information  

Open Energy Info (EERE)

Tool for Rapid Assessment of City Energy (TRACE) Tool for Rapid Assessment of City Energy (TRACE) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Tool for Rapid Assessment of City Energy (TRACE) Agency/Company /Organization: Energy Sector Management Assistance Program of the World Bank Sector: Climate Focus Area: Renewable Energy, Buildings, Energy Efficiency Topics: Low emission development planning, Pathways analysis Resource Type: Training materials, Software/modeling tools User Interface: Website Website: esmap.org/esmap/TRACE Cost: Free Equivalent URI: cleanenergysolutions.org/content/tool-rapid-assessment-city-energy-tra Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance References: TRACE[1] This tool offers cities a quick and easy way to assess their energy

12

2007 Estimated International Energy Flows  

Science Conference Proceedings (OSTI)

An energy flow chart or 'atlas' for 136 countries has been constructed from data maintained by the International Energy Agency (IEA) and estimates of energy use patterns for the year 2007. Approximately 490 exajoules (460 quadrillion BTU) of primary energy are used in aggregate by these countries each year. While the basic structure of the energy system is consistent from country to country, patterns of resource use and consumption vary. Energy can be visualized as it flows from resources (i.e. coal, petroleum, natural gas) through transformations such as electricity generation to end uses (i.e. residential, commercial, industrial, transportation). These flow patterns are visualized in this atlas of 136 country-level energy flow charts.

Smith, C A; Belles, R D; Simon, A J

2011-03-10T23:59:59.000Z

13

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

14

US energy flow, 1983  

Science Conference Proceedings (OSTI)

Energy use in 1983 closely paralleled 1982 consumption of 70 quads (70 x 10/sup 15/ Btu) although industrial production and GNP were up 6.5% and 3.3% respectively in 1983 and 1982 was clearly a recession year. Domestic oil production as well as crude imports closely resembled those of 1982. The ratio between energy use (in quads) and GNP (in 1972 dollars) also declined suggesting the continuing importance of conservation. Coal production fell slightly reflecting loss of exports due to strong foreign competition as well as smaller foreign markets. Natural gas sales fell substantially (approx. = 10%) across all end-use sectors. Price increases to residential, commercial and industrial consumers on the order of 15% were recorded and influenced fuel-switching although on a Btu basis only high sulfur residual oil is cost competitive with natural gas and then only for large industrial and utility users. 13 references, 5 figures.

Briggs, C.K.; Borg, I.Y.

1984-07-02T23:59:59.000Z

15

The trace anomaly and dynamical vacuum energy in cosmology  

Science Conference Proceedings (OSTI)

The trace anomaly of conformal matter implies the existence of massless scalar poles in physical amplitudes involving the stress-energy tensor. These poles may be described by a local effective action with massless scalar fields, which couple to classical sources, contribute to gravitational scattering processes, and can have long range gravitational effects at macroscopic scales. In an effective field theory approach, the effective action of the anomaly is an infrared relevant term that should be added to the Einstein-Hilbert action of classical General Relativity to take account of macroscopic quantum effects. The additional scalar degrees of freedom contained in this effective action may be understood as responsible for both the Casimir effect in flat spacetime and large quantum backreaction effects at the horizon scale of cosmological spacetimes. These effects of the trace anomaly imply that the cosmological vacuum energy is dynamical, and its value depends on macroscopic boundary conditions at the cosmological horizon scale, rather than sensitivity to the extreme ultraviolet Planck scale.

Mottola, Emil [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

16

California energy flow in 1991  

SciTech Connect

Energy consumption in California fell in 1991 for the first time in five years. The State`s economy was especially hard hit by a continuing national recession. The construction industry for the second year experienced a dramatic downturn. Energy use in the industrial sector showed a modest increase, but consumption in other end-use categories declined. The decrease in energy used in transportation can be traced to a substantial fall in the sales of both highway diesel fuels and vessel bunkering fuels at California ports, the latter reflecting a mid-year increase in taxes. Gasoline sales by contrast increased as did the number of miles traveled and the number of automobiles in the State. Production in California`s oil and gas fields was at 1990 levels thus arresting a steady decline in output. Due to enlarged steam flooding operations, production at several fields reached record levels. Also countering the decline in many of California fields was new production from the Port Arguello offshore field. California natural gas production, despite a modest 1991 increase, will not fill the use within the State. Petroleum comprised more than half of the State`s energy supply principally for transportation. Natural gas use showed a small increase. Oil products play virtually no role in electrical production. The largest single source of electricity to the State is imports from the Pacific Northwest and from coal-fired plants in the Southwest. Combined contributions to transmitted electricity from renewable and alternate sources declined as hydropower was constrained by a prolonged drought and as geothermal power from the largest and oldest field at The Geysers fell. Windpower grew slightly; however solar power remained at 1990 levels and made no substantial contribution to total power generation.

Borg, I.Y.; Briggs, C.K.

1993-04-01T23:59:59.000Z

17

California energy flow in 1989  

DOE Green Energy (OSTI)

California's energy use showed a modest increase (2.2%) in 1989 over 1988 which was in keeping with the steady increase in population that the state has experienced annually during the decade. All end-use sectors (residential, commercial, industrial, transportation, etc.) contributed to the growth. The larger demand was met by increased imports of all major fuels. Only electrical imports remained close to 1988 levels, in part due to increased output from Diablo Canyon nuclear plant whose performance exceeded expectations. California's per capita energy consumption has traditionally been below the national average due to the relatively benign climate associated with its centers of population. The largest single use for energy in the state was for transportation which overtook industrial usage in the 60's. Use of highway fuels continued to grow and reached all time highs in 1989. Highway congestion, a major problem and concern in the state, is anticipated to grow as the number of licensed drivers increases; in 1989 the increase was 3.4%. Output from the The Geysers Geothermal fields, the largest in the world, continued to falter as the steam output fell. Nonetheless new resources at the Coso Geothermal Resource Area and at the Wendel Geothermal field came on line during the year, and other geothermal areas were under active development. Novel sources of renewable energy (solar, wind, etc.) grew; however, collectively they made only a small contribution to the overall energy supply. Cogenerated electricity sold to the utilities by small power producers inexplicably fell in 1989 although estimates of the total capacity available rose. Energy flow diagrams illustrate energy sources and energy consumption.

Borg, I.Y.; Briggs, C.K.

1991-02-06T23:59:59.000Z

18

Flow Test | Open Energy Information  

Open Energy Info (EERE)

Flow Test Flow Test Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Flow Test Details Activities (38) Areas (33) Regions (1) NEPA(3) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Testing Techniques Parent Exploration Technique: Well Testing Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Flow tests provide information on permeability, recharge rates, reservoir pressures, fluid chemistry, and scaling. Thermal: Flow tests can measure temperature variations with time to estimate characteristics about the heat source. Dictionary.png Flow Test: Flow tests are typically conducted shortly after a well has been drilled to test its productivity. The well is opened and fluids are released, the

19

California energy flow in 1992  

DOE Green Energy (OSTI)

For the past 16 years energy flow diagrams for the State of California have been prepared from available data by members of the Lawrence Livermore National Laboratory. They have proven to be useful tools in graphically expressing energy supply and use in the State as well as illustrating the difference between particular years and between the State and the US as a whole. As far as is possible, similar data sources have been used to prepare the diagrams from year to year and identical assumptions{sup la-le} concerning conversion efficiencies have been made in order to minimize inconsistencies in the data and analyses. Sources of data used in this report are given in Appendix B and C; unavoidably the sources used over the 1976--1993 period have varied as some data bases are no longer available. In addition, we continue to see differences in specific data reported by different agencies for a given year. In particular, reported data on supply and usage in industrial/commercial/residential end-use categories have shown variability amongst the data gathering agencies, which bars detailed comparisons from year to year. Nonetheless, taken overall, valid generalizations can be made concerning gross trends and changes.

Borg, I.Y.; Briggs, C.K.

1994-04-01T23:59:59.000Z

20

Natchez Trace Elec Power Assn | Open Energy Information  

Open Energy Info (EERE)

Natchez Trace Elec Power Assn Natchez Trace Elec Power Assn Jump to: navigation, search Name Natchez Trace Elec Power Assn Place Mississippi Utility Id 13227 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service (1001 kW-5000kW) Industrial General Service (50 kW and Under) Commercial General Service (51 kW-1000 kW) Commercial Outdoor Lighting HPS 100 W Lighting Outdoor Lighting HPS 100 W Dedicated Pole Lighting Outdoor Lighting HPS 100 W Dedicated Pole & Transformer Lighting Outdoor Lighting HPS 100 W Dedicated Transformer Lighting

Note: This page contains sample records for the topic "traces energy flows" 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

Building Energy Software Tools Directory: TRACE Load 700  

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

Load 700 Load 700 TRACE Load 700 logo. Use TRACE Load 700 software - the building and load design modules of TRACE 700, Trane Air Conditioning Economics - to evaluate the effect of building orientation, size, shape, and mass based on hourly weather data and the resulting heat-transfer characteristics of air and moisture. To assure calculation integrity, the program uses algorithms recommended by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE). Choose from eight different ASHRAE cooling and heating methodologies, including the Exact Transfer Function. The program encourages "what if" analyses, allowing the user to enter construction details in any order and then easily change the resulting building model as the design progresses. Multiple project views and "drag-and-drop"

22

Building Energy Software Tools Directory: TRACE Load 700  

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

and Renewable Energy EERE Home | Programs & Offices | Consumer Information Building Energy Software Tools Directory Search Search Help Building Energy Software Tools Directory...

23

Energy flow in acoustic black holes  

SciTech Connect

We present the results of an analysis of superradiant energy flow due to scalar fields incident on an acoustic black hole. In addition to providing independent confirmation of the recent results in [E. Berti, V. Cardoso, and J. P. S. Lemos, Phys. Rev. D 70, 124006 (2004).], we determine in detail the profile of energy flow everywhere outside the horizon. We confirm explicitly that in a suitable frame the energy flow is inward at the horizon and outward at infinity, as expected on physical grounds.

Choy, K.; Kruk, T.; Carrington, M.E.; Fugleberg, T.; Zahn, J.; Kobes, R.; Kunstatter, G.; Pickering, D. [Department of Physics, Brandon University, Brandon, Manitoba, R7A 6A9 (Canada) and Winnipeg Institute for Theoretical Physics, Winnipeg, Manitoba (Canada); Department of Physics, University of Winnipeg, Winnipeg, Manitoba, R7A 6A9 (Canada) and Winnipeg Institute for Theoretical Physics, Winnipeg, Manitoba (Canada); Department of Mathematics, Brandon University, Brandon, Manitoba, R7A 6A9 (Canada)

2006-05-15T23:59:59.000Z

24

Redox Flow Batteries for Grid-scale Energy Storage - Energy ...  

Though considered a promising large-scale energy storage device, the real-world deployment of redox flow batteries has been limited by their inability ...

25

State energy flow patterns. [All 50 states  

SciTech Connect

Highly visual and self-explanatory 1975 energy flow diagrams are presented for each of the 50 states and for the entire United States. Each diagram illustrates the energy produced and how it is consumed or lost. The diagrams are meant to serve as a convenient and useful reference (or starting point) for consideration of energy-related problems.

Kidman, R.B.; Barrett, R.J.

1977-01-01T23:59:59.000Z

26

Energy Flow Models for the Steel Industry  

E-Print Network (OSTI)

Energy patterns in the U. S. steel industry are examined using several models. First is an end-use model based on data in the 1994 Manufacturing Energy Consumption Survey (MECS). Then a seven-step process model is presented and material flow through each step is calibrated against Commerce Dept. data. Third, a detailed energy flow model is presented for coke ovens and blast furnaces, two very energy-intensive steps in our seven step model of steelmaking. This process-step model is calibrated against both our energy end use and material flow models. These models can serve as the base case for simulating changes in energy utilization and waste streams for steelmaking spurred by economic or regulatory conditions or technology innovations.

Hyman, B.; Andersen, J. P.

1998-04-01T23:59:59.000Z

27

Local Energy Generation in Barotropic Flows  

Science Conference Proceedings (OSTI)

The local growth of disturbances to a steady, nondivergent shear flow is investigated in the context of the barotropic vorticity equation (BVE). A new expression for the instantaneous energy generation rate is derived by using a local coordinate ...

R. Iacono

2002-07-01T23:59:59.000Z

28

Energy flows : empowering New Orleans  

E-Print Network (OSTI)

This thesis claims to develop alternative energy-harvesting systems by looking at their implementation at the residential scale in order to facilitate the economical autonomy of a community and thus improve its living ...

Guiraud, Florence Nathalie

2012-01-01T23:59:59.000Z

29

California energy flow in 1987  

Science Conference Proceedings (OSTI)

California is noteworthy because of its diversity of energy supply and its proclivity to change and experiment in all matters relating to energy use and development. Overall energy use in the state increased 6% spread over almost all end-use sectors. The increase reflected a colder year than 1986 and a large population increase. On the supply side, the most impressive change in meeting demand was a substantial (23%) increase in the use of natural gas, particularly for power production and in the industrial sector. The increase was fostered by drought conditions that limited hydropower, by the increased availability of out-of-state supplies, and by changes in regulations governing gas transmissions. The number of cogenerators and self-generators grew faster than in the nation as a whole. The amount of power sold to the utilities by this group was double the amount sold in 1985, posing problems to utilities and regulatory agencies alike. Alternate sources of energy continued to grow. The state's windfarms and geothermal installations are the largest in the world. The state sponsored methanol program moved ahead with the introduction of flexible fueled automobiles into the state's fleet and installation of a large number of service stations selling the fuel. Nonetheless, California's energy picture is dominated by the use of petroleum and natural gas, the bulk of which are imported. 31 refs., 3 figs., 7 tabs.

Borg, I.Y.; Briggs, C.K.

1989-01-13T23:59:59.000Z

30

California energy flow in 1980  

Science Conference Proceedings (OSTI)

Energy consumption fell slightly in California during 1980. In view of an increase in population on the order of 375,000 the per capita consumption fell even more, but less than 4%. Transmitted electric power remained near 1979 levels, but oil as an electrical generating fuel declined dramatically (40%). In its stead natural gas and hydropower were used to generate electricity. Mild winters in 1979-80 and 1980-81 made unusual amounts of natural gas available for that purpose. Both California and out-of-state sources of hydropower increased during 1980. Electricity from out-of-state coal fired plants also increased slightly. Problems at San Onofre nuclear plant resulted in a 47% decrease in electricity from one of the two commercial nuclear plants operating in California in 1980. Decreased oil use also had a clear expression in the transportation end use sector. Gasoline consumption dropped 4% as it had in 1979 as well. Sales of vessel bunkering fuels increased as part of a trend related to larger amounts of heavy oils from local and Alaskan sources being refined in the state and decreased use of lighter Indonesian oils. Residential/commercial usage dropped 5% during 1980 as a consequence of price driven conservation and mild weather. By contrast, the industrial sector increased its energy consumption by 6%. California's overall energy use pattern continues to differ substantially from that of the US as a whole. The dedication of large amounts of fossil fuels to transportation, the total absence of coal-fired plants for power production in the state, and the larger share of oil and natural gas used for electrical power generation are among California's energy situation's distinguishing features. In 1980, combined use of oil and gas declined for the first time in some years by 4%. The national average decline for 1980 was 7%.

Briggs, C.K.; Borg, I.Y.

1982-05-12T23:59:59.000Z

31

California energy flow in 1993  

SciTech Connect

Energy consumption in the state of California decreased about 3% in 1993 reflecting continuation of the recession that was manifest in a moribund construction industry and a high state unemployment that ran counter to national recovery trends. Residential/commercial use decreased slightly reflecting a mild winter in the populous southern portion of the state, a decrease that was offset to some extent by an increase in the state population. Industrial consumption of purchased energy declined substantially as did production of self-generated electricity for in-house use. Consumption in the transportation sector decreased slightly. The amount of power transmitted by the utilities was at 1992 levels; however a smaller proportion was produced by the utilities themselves. Generation of electricity by nonutilities, primarily cogenerators and small power producers, was the largest of any state in the US. The growth in the number of private power producers combined with increased amounts of electricity sold to the public utilities set the stage for the sweeping proposals before the California Public Utility Commission to permit direct sales from the nonutilities to retail customers. California production of both oil and natural gas declined; however, to meet demand only the imports of natural gas increased. A break in the decade-long drought during the 1992--1993 season resulted in a substantial increase in the amount of hydroelectricity generated during the year. Geothermal energy`s contribution increased substantially because of the development of new resources by small power producers. Decline in steam production continued at The Geysers, the state`s largest field, principally owned and managed by a public utility. Increases in windpower constituted 1--1/2% of the total electric supply--up slightly from 1992. Several solar photo voltaic demonstration plants were in operation, but their contribution remained small.

Borg, I.Y.; Briggs, C.K.

1995-04-01T23:59:59.000Z

32

Keeping the Nation's Energy Flowing | Department of Energy  

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

Keeping the Nation's Energy Flowing Keeping the Nation's Energy Flowing Keeping the Nation's Energy Flowing March 29, 2013 - 10:58am Addthis Patricia A. Hoffman Patricia A. Hoffman Assistant Secretary, Office of Electricity Delivery & Energy Reliability What does this mean for me? The Department's priority is reflected in its investment in cybersecurity for energy delivery systems and energy reliability modernization. We closely collaborate with Federal, State and local governments, and industry. Our lives are constantly being intertwined with the digital world, making cyber security a critical component of daily life. And this is especially true when it comes to protecting the nation's critical infrastructure, which delivers services that are vital to U.S. security, economic prosperity and the safety and well being of Americans.

33

California energy flow in 1994  

SciTech Connect

California energy consumption increased in 1994 in keeping with a recovery from the previous mild recession years. Although unemployment remained above the national average, other indicators pointed to improved economic health. Increased energy use was registered principally in the residential/commercial and transportation end-use sectors. A cooler-than-usual winter and spring was reflected in increased consumption of natural gas, the principal space-heating fuel in the state. Because of low water levels behind state dams, utilities turned to natural gas for electrical generation and to increased imports from out-of- state sources to meet demand. Other factors, such as smaller output from geothermal, biomass, and cogenerators, contributed to the need for the large increase in electrical supply from these two sources. Nonetheless, petroleum dominated the supply side of the energy equation of the state in which transportation requirements comprise more than one-third of total energy demand. About half of the oil consumed derived from California production. Onshore production has been in slow decline; however, in 1994 the decrease was compensated for by increases from federal offshore fields. Until 1994 production had been limited by regulatory restrictions relating to the movement of the crude oil to onshore refineries. State natural gas production remained at 1993 levels. The increased demand was met by larger imports from Canada through the recent expansion of Pacific Transmission Company`s 804 mile pipeline. Deregulation of the state`s utilities moved ahead in 1994 when the California Public Utilities Commission issued its proposal on how to restructure the industry. Public hearings were conducted in which the chief issues were recovery of the utilities` capital investments, conflicts with the Public Utilities Policies Act, management of power transactions between new suppliers and former utility customers, and preservation of energy conservation programs currently sponsored by the utilities. The issues were not resolved at year-end, but the state`s public utilities began to take steps to improve their positions in a future competitive market by cutting costs, improving efficiencies operating plants, and enlarging their nonutility interests.

Borg, I.Y.; Mui, N.

1996-09-01T23:59:59.000Z

34

Fuel Cell Technologies Office: Flow Cells for Energy Storage...  

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

Flow Cells for Energy Storage Workshop The U.S. Department of Energy's (DOE) Lawrence Berkeley National Laboratory (LBNL) held a Flow Cells for Energy Storage Workshop on March...

35

Flow Cells for Energy Storage Workshop Overview  

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

Electricity Delivery Electricity Delivery & Energy Reliability Organized by: Energy Efficiency & Renewable Energy W i t h h e l p b y : Agenda Day/Time Speaker Subject Wednesday, March 07, 2012 8:45-9:00 Adam Weber, LBNL Welcome and workshop overview 9:00-9:30 Various, EERE, OFCT Background, approach, and reversible fuel cells 9:30-9:55 Michael Perry, UTRC Renaissance in flow cells: opportunities 9:55-10:20 Joe Eto, LBNL Energy storage requirements for the smart grid 10:20-10:35 AM Break 10:35-11:00 Robert Savinell, CWRU Revisiting flow-battery R&D 11:00-11:25 Stephen Clarke, Applied Intellectual Capital Lessons learned and yet to be learned from 20 years in RFB R&D 11:25-11:45 Imre Gyuk, DOE OE Research and deployment of stationary storage at DOE

36

Observing and modeling Earths energy flows  

SciTech Connect

This article reviews, from the authors perspective, progress in observing and modeling energy flows in Earth's climate system. Emphasis is placed on the state of understanding of Earth's energy flows and their susceptibility to perturbations, with particular emphasis on the roles of clouds and aerosols. More accurate measurements of the total solar irradiance and the rate of change of ocean enthalpy help constrain individual components of the energy budget at the top of the atmosphere to within {+-}2 W m{sup -2}. The measurements demonstrate that Earth reflects substantially less solar radiation and emits more terrestrial radiation than was believed even a decade ago. Active remote sensing is helping to constrain the surface energy budget, but new estimates of downwelling surface irradiance that benefit from such methods are proving difficult to reconcile with existing precipitation climatologies. Overall, the energy budget at the surface is much more uncertain than at the top of the atmosphere. A decade of high-precision measurements of the energy budget at the top of the atmosphere is providing new opportunities to track Earth's energy flows on timescales ranging from days to years, and at very high spatial resolution. The measurements show that the principal limitation in the estimate of secular trends now lies in the natural variability of the Earth system itself. The forcing-feedback-response framework, which has developed to understand how changes in Earth's energy flows affect surface temperature, is reviewed in light of recent work that shows fast responses (adjustments) of the system are central to the definition of the effective forcing that results from a change in atmospheric composition. In many cases, the adjustment, rather than the characterization of the compositional perturbation (associated, for instance, with changing greenhouse gas concentrations, or aerosol burdens), limits accurate determination of the radiative forcing. Changes in clouds contribute importantly to this adjustment and thus contribute both to uncertainty in estimates of radiative forcing and to uncertainty in the response. Models are indispensable to calculation of the adjustment of the system to a compositional change but are known to be flawed in their representation of clouds. Advances in tracking Earth's energy flows and compositional changes on daily through decadal timescales are shown to provide both a critical and constructive framework for advancing model development and evaluation.

Stevens B.; Schwartz S.

2012-05-11T23:59:59.000Z

37

Energy End-Use Flow Maps for the Buildings Sector  

SciTech Connect

Graphical presentations of energy flows are widely used within the industrial sector to depict energy production and use. PNNL developed two energy flow maps, one each for the residential and commercial buildings sectors, in response to a need for a clear, concise, graphical depiction of the flows of energy from source to end-use in the building sector.

Belzer, David B.

2006-12-04T23:59:59.000Z

38

If vacuum energy can be negative, why is mass always positive?: Uses of the subdominant trace energy condition  

E-Print Network (OSTI)

Diverse calculations have shown that a relativistic field confined to a cavity by well defined boundary conditions can have a negative Casimir or vacuum energy. Why then can one not make a finite system with negative mass by confining the field in a some way? We recall, and justify in detail, the not so familiar subdominant trace energy condition for ordinary (baryon-electron nonrelativistic) matter. With its help we show, in two ways, that the mass-energy of the cavity structure necessary to enforce the boundary conditions must exceed in magnitude the negative vacuum energy, so that all systems of the type envisaged necessarily have positive mass-energy.

Bekenstein, Jacob D

2013-01-01T23:59:59.000Z

39

Free Flow Power Corporation | Open Energy Information  

Open Energy Info (EERE)

Flow Power Corporation Flow Power Corporation Jump to: navigation, search Name Free Flow Power Corporation Address 239 Causeway St Suite 300 Place Gloucester, Massachusetts Zip 1930 Sector Marine and Hydrokinetic, Ocean Product Massachusetts-based company that has developed a turbine generator designed to extract energy from tides, ocean currents, rivers, streams, canals and conduits. Free Flow has raised some initial funding and is prototype testing in rivers and tanks. Year founded 2007 Number of employees 28 Phone number 978-232-3536 Website http://www.free-flow-power.com Coordinates 37.413962°, -76.526305° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.413962,"lon":-76.526305,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

40

Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop  

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

Flow Cells for Energy Flow Cells for Energy Storage Workshop to someone by E-mail Share Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Facebook Tweet about Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Twitter Bookmark Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Google Bookmark Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Delicious Rank Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on Digg Find More places to share Fuel Cell Technologies Office: Flow Cells for Energy Storage Workshop on AddThis.com... Publications Program Publications Technical Publications Educational Publications Newsletter Program Presentations Multimedia Conferences & Meetings Annual Merit Review Proceedings

Note: This page contains sample records for the topic "traces energy flows" 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

Network flow model for multi-energy systems  

Science Conference Proceedings (OSTI)

This paper describes a novel approach to model networks with multiple energy carrier. The proposed nodal matrix establishes a link between an optimization of enclosed areas and their interconnections via networks. In the envisioned network flow model ... Keywords: energy conversion, energy hubs, grids, line losses, network flow, optimal power flow

Matthias Schulze; Goran Gaparovi?

2010-02-01T23:59:59.000Z

42

U.S. Energy Flow - 1999  

Science Conference Proceedings (OSTI)

Lawrence Livermore National Laboratory (LLNL) has prepared similar flow charts of U.S. energy consumption since 1972. The chart follows the flow of individual fuels and compares these on the basis of a common energy unit of quadrillion British thermal units (Btu). A quadrillion, or ''quad,'' is 10{sup 15}. One Btu is the quantity of heat needed to raise the temperature of 1 pound of water by 1 F at or near 39.2 F. The width of each colored line across this chart is in proportion to the amount of quads conveyed. (Exception: lines showing extremely small amounts have been made wide enough to be clearly visible.) In most cases, the numbers used in this chart have been rounded to the nearest tenth of a quad, although the original data was published in hundredths or thousandths of a quad. As a consequence of independent rounding, some of the summary numbers may not appear to be a precise total of their various components. The first chart in this document uses quadrillion Btu's to conform with data from the U.S. Department of Energy's Energy Information Administration (EIA). However, the second chart is expressed in exajoules. A joule is the metric unit for heat. One Btu equals 1,055.06 joules; and one quadrillion Btu's equals 1.055 exajoules (an exajoule is 10{sup 18} joules).

Kaiper, G V

2001-03-01T23:59:59.000Z

43

Monitoring of energy flows and optimization of energy efficiency in a production facility  

Science Conference Proceedings (OSTI)

The present paper reports the findings of an assessment of the energy flows of a building equipped with machine tools and discusses options to optimize its energy efficiency. The energy flows in the buildings are recorded based on collected data and ... Keywords: building simulation, energy consumption, energy efficiency in production, energy flow analysis

I. Leobner; K. Ponweiser; C. Dorn; F. Bleicher

2011-07-01T23:59:59.000Z

44

Directed and elliptic flow in Au + Au at intermediate energies  

E-Print Network (OSTI)

Directed and elliptic flow for the Au + Au system at incident energies between 40 and 150 MeV per nucleon has been measured using the INDRA 4 pi multi-detector. For semi-central collisions, the elliptic flow of Z directed flow changes sign at a bombarding energy between 50 and 60 MeV per nucleon and remains negative at lower energies. The conditions for the appearance and possible origins of negative flow are discussed.

J. Lukasik; G. Auger; M. L. Begemann-Blaich; N. Bellaize; R. Bittiger; F. Bocage; B. Borderie; R. Bougault; B. Bouriquet; J. L. Charvet; A. Chbihi; R. Dayras; D. Durand; J. D. Frankland; E. Galichet; D. Gourio; D. Guinet; S. Hudan; P. Lautesse; F. Lavaud; A. Le Fevre; R. Legrain; O. Lopez; U. Lynen; W. F. J. Mueller; L. Nalpas; H. Orth; E. Plagnol; E. Rosato; A. Saija; C. Schwarz; C. Sfienti; B. Tamain; W. Trautmann; A. Trzcinski; K. Turzo; E. Vient; M. Vigilante; C. Volant; B. Zwieglinski

2004-10-20T23:59:59.000Z

45

Power flow analysis for amplifier design and energy harvesting  

E-Print Network (OSTI)

Power flow analysis for amplifier design and energy harvesting Nikola Vujica, Donald J. Leoa strategies which will provide an electrical energy regeneration. In this case, the power is flowing from to the electrical side which may have the ability to store (regenerate) this energy. The ability of energy storage

Lindner, Douglas K.

46

Definition: Flow Test | Open Energy Information  

Open Energy Info (EERE)

Flow Test Jump to: navigation, search Dictionary.png Flow Test Flow tests are typically conducted shortly after a well has been drilled to test its productivity. The well is opened...

47

Portable Liquid Flow Metering for Energy Conservation Programs  

E-Print Network (OSTI)

Flow metering is absolutely required for evaluation of energy usage. In fact, determining usages and heat balances without metering are simply educated guesses. Recent technological innovations in flow metering have produced clamp-on, portable flow meters to measure liquids. This paper reviews the principles of ultrasonic flow meters. Applications and costs of ultrasonic versus orifice flow meters are important to consider in energy audits. A discussion follows on 'how' and 'where' to use ultrasonic flowmeters. Estimated costs contained in this paper encompass equipment costs as well as installation costs associated with both ultrasonic and orifice meters.

Miles, F. J.

1982-01-01T23:59:59.000Z

48

Electromagnetic energy flow lines as possible paths of photons  

E-Print Network (OSTI)

Motivated by recent experiments where interference patterns behind a grating are obtained by accumulating single photon events, here we provide an electromagnetic energy flow-line description to explain the emergence of such patterns. We find and discuss an analogy between the equation describing these energy flow lines and the equation of Bohmian trajectories used to describe the motion of massive particles.

M. Davidovic; A. S. Sanz; D. Arsenovic; M. Bozic; S. Miret-Artes

2008-05-21T23:59:59.000Z

49

Category:Flow Data | Open Energy Information  

Open Energy Info (EERE)

Login | Sign Up Wiki Browse Latinoamrica Buildings Clean Energy Economy Coordinated Low Emissions Assistance Network Geothermal Incentives and Policies International Clean Energy...

50

Free Flow 69 | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Name Free Flow 69 Address Unit 9 Windmill Ind Est Windmill Place Fowey Zip PL23 1HB Sector Marine and Hydrokinetic Phone number 01726 833337 Website...

51

Radiant energy receiver having improved coolant flow control means  

DOE Patents (OSTI)

An improved coolant flow control for use in radiant energy receivers of the type having parallel flow paths is disclosed. A coolant performs as a temperature dependent valve means, increasing flow in the warmer flow paths of the receiver, and impeding flow in the cooler paths of the receiver. The coolant has a negative temperature coefficient of viscosity which is high enough such that only an insignificant flow through the receiver is experienced at the minimum operating temperature of the receiver, and such that a maximum flow is experienced at the maximum operating temperature of the receiver. The valving is accomplished by changes in viscosity of the coolant in response to the coolant being heated and cooled. No remotely operated valves, comparators or the like are needed.

Hinterberger, H.

1980-10-29T23:59:59.000Z

52

The Energy Transformation Limit Theorem for Gas Flow Systems  

E-Print Network (OSTI)

The limit energy theorem which determines the possibility of transformation the energy flow in power systems in the absence of technical work is investigated and proved for such systems as gas lasers and plasmatrons, chemical gas reactors, vortex tubes, gas-acoustic and other systems, as well as a system of close stars. In the case of the same name ideal gas in the system the maximum ratio of energy conversion effectiveness is linked to the Carnot theorem, which in its turn is connected with the Nernst theorem. However, numerical analyses show that the class of flow energy systems is non-carnot one. The ratio of energy conversion effectiveness depends on the properties of the working medium; a conventional cycle in open-circuit is essentially irreversible. The proved theorem gives a more strongly worded II law of thermodynamics for the selected class of flow energy systems. Implications for astrophysical thermodynamic systems and the theory of a strong shock wave are discussed.

Volov, V T

2011-01-01T23:59:59.000Z

53

SOFC Anode Interaction with Trace Coal Syngas Species U.S. Dept of Energy, National Energy Technology Laboratory, Morgantown, WV 26507  

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

SOFC Anode Interaction with Trace Coal Syngas Species SOFC Anode Interaction with Trace Coal Syngas Species U.S. Dept of Energy, National Energy Technology Laboratory, Morgantown, WV 26507 Gregory Hackett, Kirk Gerdes, Randall Gemmen Phone: (304)285-5279, Gregory.Hackett@NETL.DOE.GOV Utilization of coal as a fuel source for highly efficient integrated gasification fuel cell (IGFC) power generation facilities is technologically and environmentally attractive. IGFC plants are expected to offer the highest efficiency coal gasification processes, even when carbon capture and storage systems are included in the design. One element of IGFC research at the National Energy Technology Laboratory is the investigation of syngas cleanup processes for these integrated systems. Of particular interest are the effects of trace elements naturally contained in

54

Introduction to the Cash Flow Opportunity Calculator Spreadsheet | ENERGY  

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

the Cash Flow Opportunity Calculator Spreadsheet the Cash Flow Opportunity Calculator Spreadsheet 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 Success stories

55

Precision Flow Technologies | Open Energy Information  

Open Energy Info (EERE)

Precision Flow Technologies Precision Flow Technologies Jump to: navigation, search Name Precision Flow Technologies Place Saugerties, New York Zip 12477 Product New York-based, firm focused on the design and manufacture of ultra high purity gas and control systems. Coordinates 42.07778°, -73.952459° 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":42.07778,"lon":-73.952459,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

56

Precision Flow Table | Open Energy Information  

Open Energy Info (EERE)

Table Table Jump to: navigation, search Basic Specifications Facility Name Flow Table Overseeing Organization United States Army Corp of Engineers (ERDC) Hydrodynamic Testing Facility Type Flow Table Length(m) 2.4 Beam(m) 1.2 Water Type Freshwater Cost(per day) Contact POC Towing Capabilities Towing Capabilities None Wavemaking Capabilities Wavemaking Capabilities None Channel/Tunnel/Flume Channel/Tunnel/Flume Yes Wind Capabilities Wind Capabilities None Control and Data Acquisition Description Automated data acquisition and control system Cameras None Available Sensors Flow, Pressure Range(psi), Turbulence, Velocity, Wave Probe Data Generation Capability Real-Time No Test Services Test Services Yes Past Pertinent Test Experience Users are District Engineers, Planners, and Engineering Consultants

57

Energy flow analysis for curved beams  

Science Conference Proceedings (OSTI)

This paper presents an energy model for the medium- and high-frequency analysis of LoveKirchhoff curved beams. This model introduced by Nefske and Sung [Statistical Energy Analysis NCA 3

A. Le Bot; M. N. Ichchou; L. Jezequel

1997-01-01T23:59:59.000Z

58

Flow visualization using momentum and energy transport tubes and applications to turbulent flow in wind farms  

E-Print Network (OSTI)

As a generalization of the mass-flux based classical stream-tube, the concept of momentum and energy transport tubes is discussed as a flow visualization tool. These transport tubes have the property, respectively, that no fluxes of momentum or energy exist over their respective tube mantles. As an example application using data from large-eddy simulation, such tubes are visualized for the mean-flow structure of turbulent flow in large wind farms, in fully developed wind-turbine-array boundary layers. The three-dimensional organization of energy transport tubes changes considerably when turbine spacings are varied, enabling the visualization of the path taken by the kinetic energy flux that is ultimately available at any given turbine within the array.

Meyers, Johan

2012-01-01T23:59:59.000Z

59

Redox Flow Batteries for Grid-scale Energy Storage - Energy ...  

Wind Energy; Partners (27) Visual Patent Search; Success Stories; News; Events; Startup America Industrial Technologies Energy Storage Redox ...

60

Energy momentum flows for the massive vector field  

E-Print Network (OSTI)

We present a causal trajectory interpretation for the massive vector field, based on the flows of rest energy and a conserved density defined using the time-like eigenvectors and eigenvalues of the stress-energy-momentum tensor. This work extends our previous work which used a similar procedure for the scalar field. The massive, spin-one, complex vector field is discussed in detail and solutions are classified using the Pauli-Lubanski spin vector. The flows of energy-momentum are illustrated in a simple example of standing waves in a plane.

George Horton; Chris Dewdney

2006-09-26T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Hydrogen-Bromine Flow Battery: Hydrogen Bromine Flow Batteries for Grid Scale Energy Storage  

SciTech Connect

GRIDS Project: LBNL is designing a flow battery for grid storage that relies on a hydrogen-bromine chemistry which could be more efficient, last longer and cost less than todays lead-acid batteries. Flow batteries are fundamentally different from traditional lead-acid batteries because the chemical reactants that provide their energy are stored in external tanks instead of inside the battery. A flow battery can provide more energy because all that is required to increase its storage capacity is to increase the size of the external tanks. The hydrogen-bromine reactants used by LBNL in its flow battery are inexpensive, long lasting, and provide power quickly. The cost of the design could be well below $100 per kilowatt hour, which would rival conventional grid-scale battery technologies.

2010-10-01T23:59:59.000Z

62

Energy Flow Diagram | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Science for Energy Flow » Energy Flow Diagram Science for Energy Flow » Energy Flow Diagram Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) News & Resources Program Summaries Brochures Reports Accomplishments Presentations BES and Congress Science for Energy Flow Energy Flow Diagram Seeing Matter Scale of Things Chart Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: sc.bes@science.doe.gov More Information » Science for Energy Flow Energy Flow Diagram Print Text Size: A A A RSS Feeds FeedbackShare Page This diagram shows 2010 energy flow from primary sources (oil, natural gas,

63

U.S. energy flow, 1992  

Science Conference Proceedings (OSTI)

This report discusses energy consumption in the United States which rose slightly in 1992, reflecting partial recovery from the economic recession that prevailed during the previous year. Increases were registered in all major end use sectors with the largest occurring in the industrial sector. Energy consumed for transportation, which reflects improved passenger fleet efficiencies and a growing population as well as economic activity, returned to 1989--1990 levels. The United States depended on petroleum for 41 % of its energy supply. Imports of crude oil and petroleum products increased to compensate for decline in domestic production. Imports rose to 44% of supply. Because domestic production of natural gas was close to 1991`s, increased demand was accommodated by larger (16%) imports from Canada. Coal production was virtually unchanged from 1991 and thus well below 1990 production. Nonetheless coal supplied about one quarter of US energy needs, primarily for electrical generation. For the third year electricity transmitted by utilities departed from historic growth trends; it remained at 1991 levels. The Energy Policy Act of 1992 was signed into law in October. Among its many provisions, this act encourages independent power producers to compete with the utilities in wholesale production of electricity, streamlines the licensing of nuclear power plants, promotes the development of renewable energy sources through tax incentives, imposes efficiency standards on many manufacturing items, requires federal and private fleets to buy vehicles that run on alternative fuels, and requires the Secretary of Energy to develop a plan to decrease oil consumption, increase the use of renewable energy, improve conversion efficiencies, and limit the emission of greenhouse gases.

Borg, I.Y.; Briggs, C.K.

1993-10-01T23:59:59.000Z

64

Distributed Power Flow Control: Distributed Power Flow Control using Smart Wires for Energy Routing  

Science Conference Proceedings (OSTI)

GENI Project: Smart Wire Grid is developing a solution for controlling power flow within the electric grid to better manage unused and overall transmission capacity. The 300,000 miles of high-voltage transmission line in the U.S. today are congested and inefficient, with only around 50% of all transmission capacity utilized at any given time. Increased consumer demand should be met in part with more efficient and an economical power flow. Smart Wire Grids devices clamp onto existing transmission lines and control the flow of power withinmuch like how internet routers help allocate bandwidth throughout the web. Smart wires could support greater use of renewable energy by providing more consistent control over how that energy is routed within the grid on a real-time basis. This would lessen the concerns surrounding the grids inability to effectively store intermittent energy from renewables for later use.

None

2012-04-24T23:59:59.000Z

65

U.S. Energy Flow -- 1995  

SciTech Connect

Energy consumption in 1995 increased slightly for the fifth year in a row (from 89 to 91 quadrillion [1015Btu). U.S. economic activity slowed from the fast-paced recovery of 1994, even with the continued low unemployment rates and low inflation rates. The annual increase in U.S. real GDP dropped to 4.6% from 1994?s increase of 5.8%. Energy consumption in all major end-use sectors surpassed the record-breaking highs achieved in 1994, with the largest gains (2.5%) occurring in the residential/commercial sector. Crude oil imports decreased for the first time this decade. There was also a decline in domestic oil production. Venezuela replaced Saudi Arabia as the principal supplier of imported oil. Imports of natural gas, mainly from Canada, continued to increase. The demand for natural gas reached a level not seen since the peak levels of the early 1970s and the demand was met by a slight increase in both natural gas production and imports. Electric utilities had the largest percentage increase of n.atural gas consumption, a climb of 7% above 1994 levels. Although coal production decreased, coal exports continued to make a comeback after 3 years of decline. Coal once again become the primary U.S. energy export. Title IV of the Clean Air Act Amendments of 1990 (CAAA90) consists of two phases. Phase I (in effect as of January 1, 1995) set emission restrictions on 110 mostly coal-burning plants in the eastern and midwestem United States. Phase II, planned to begin in the year 2000, places additional emission restrictions on about 1,000 electric plants. As of January 1, 1995, the reformulated gasoline program, also part of the CAAA90, was finally initiated. As a result, this cleaner-burning fuel was made available in areas of the United States that failed to meet the Environmental Protection Agency? s (EPA?s) ozone standards. In 1995, reformulated gasoline represented around 28% of total gasoline sales in the United States. The last commercial nuclear power plant under construction in the United States came on line in 1995. The Tennessee Valley Authority? s (TVA) Watts Bar-l received a low-power operating license from the U.S. Nuclear Regulatory Commission (NRC). The construction permit was granted in 1972. Also, TVA canceled plans to complete construction of three other nuclear plants. In 1995, federal and state governments took steps to deregulate and restructure the electric power industry. The Federal Energy Regulatory Commission (FERC) unanimously approved a proposal to require utilities to open their electric transmission system to competition from wholesale electricity suppliers. California has been at the forefront in the restructuring of the electric utility industry. Plans authorized by the California Public Utility Commission prepare for a free market in electricity to be established by 1998. In 1990, the U.S. Department of Energy (DOE) began reporting statistics on renewable energy consumption. The types and amounts of renewable energy consumed vary by end-use sector, electric utilities and the industrial sector being the primary consumers since 1990. Renewable energy provided 6.83 quads (7.6I) of the total energy consumed in the United States in 1995, compared to 7.1% in 1994. Increasing concern over the emission of greenhouse gases has resulted in exhaustive analysis of U.S. carbon emissions from energy use. Emissions in the early 1990s have already exceeded those projected by the Clinton Administration? s Climate Change Action Plan (CCAP) released in 1994 that was developed to stabilize U.S. greenhouse gas emissions by the year 2000.

Miller, H.; Mui, N.; Pasternak, A.

1997-12-01T23:59:59.000Z

66

U.S. energy flow - 1993  

SciTech Connect

With continued improvement in the economic health of the nation, energy consumption in 1993 increased by almost 2.5%. Use of energy in all major end-use sectors increased, with the largest gains registered in the residential/commercial sector. In this sector, substantial increase in the use of natural gas reflected a harsh 1993-1994 winter as well as broader availability of the fuel for space heating. Crude oil imports rose 8% but stood below the all-time high set in 1977. About half of the increase reflected declining domestic oil production. Imports of natural gas, principally from Canada, increased as they have every year since 1986. They comprise 11% of supply and supplement domestic production, which has similarly risen over the same time span. Increased demand for natural gas is evident in most sectors but especially in the industrial sector, where a growing number of cogenerators of electricity burn natural gas. Although coal consumption in the United States rose 3% in 1993, domestic coal production declined by a greater margin due to a coal strike. Because of increased international competition, exports fell 27%. Electricity transmitted by the utilities again increased, following a decade-long trend interrupted only in 1992 by the national economic recession. The provisions of the Energy Policy Act of 1992 dealing with transport of nonutility-generated electricity by the public utilities began to be implemented in 1993. The provisions of the Energy Policy Act as well as those of the Public Utility Regulatory Policies Act of 1978 are setting the stage for increased competition for customers and for what promises to be a restructuring of the historically monopolistic industry. Nuclear power from the United States`s 109 operable reactors constituted 21% of utility-generated electricity. With the continued retirement of outmoded and flawed reactors, nuclear capacity factors attained 71 in 1993, up from 56% a decade earlier.

Borg, I.Y.; Briggs, C.K.

1994-10-01T23:59:59.000Z

67

Semester Project FS 2014 Focus on Energy, Flow  

E-Print Network (OSTI)

to the chamber for liquefied Xe. Liquid nitrogen will be used as a coolant. The major challenge with this projectSemester Project ­ FS 2014 Focus on Energy, Flow and Processes Cryogenic Feed System for liquefied temperatures to keep the fuel in a liquefied state (

Daraio, Chiara

68

Fuel cell with metal screen flow-field - Energy Innovation Portal  

Building Energy Efficiency ... Solar Thermal; ... and a metal mesh flow field therebetween for distributing cooling water flow over the electrodes to remove heat ...

69

Non-invasive energy meter for fixed and variable flow systems ...  

An energy metering method and apparatus for liquid flow systems comprising first and second segments of one or more conduits through which a liquid flows, comprising ...

70

U.S. energy flow -- 1994  

Science Conference Proceedings (OSTI)

Energy consumption in 1994 increased for the fourth year in a row, reaching an all-time high. It was associated with a robust economy, low inflation, and low unemployment rates. Of the populous states, California lagged substantially behind the national recovery. Consumption in all major end-use sectors reached historic highs. Transmission of electrical power by the utilities increased almost 3%. However, this understates the increase of the total amount of electricity used in the nation because the amount of electricity used ``in-house`` by a growing number of self-generators is unrecorded. Imports of both fossil fuels and electricity increased. About half of the total oil consumed was imported, with Saudi Arabia being the principal supplier. Domestic oil production continued to decline; however, the sharp decline in Alaskan production was slowed. The increase in the demand for natural gas was met by both a modest increase in domestic production and imports from Canada, which comprised 10% of supply. The residential/commercial sector is the largest single consumer of natural gas; however, use by electric generators has increased annually for the past decade. The regulated utilities increased their consumption 11% in 1994. The year was noteworthy for the US nuclear power industry. Work was halted on the last nuclear power plant under construction in the country. Because of the retirement of aged and poorly performing nuclear plants and because of improved efficiencies, the capacity factor for the remaining 109 operable plants reached a record 74%.

Borg, I.Y.; Briggs, C.K.

1995-12-01T23:59:59.000Z

71

NUCLEAR FLUID DYNAMICS VERSUS INTRANUCLEAR CASCADE--POSSIBLE EVIDENCE FOR COLLECTIVE FLOW IN CENTRAL HIGH ENERGY NUCLEAR COLLISIONS  

E-Print Network (OSTI)

Flow in Central High Energy Nuclear Collisions H. Stockera,under Contract High energy nuclear collisions offer a uniquesidewards flowin high-energy nuclear collisions. The

Stocker, H.

2012-01-01T23:59:59.000Z

72

Energy harvesting efficiency of piezoelectric flags in axial flows  

E-Print Network (OSTI)

Self-sustained oscillations resulting from fluid-solid instabilities, such as the flutter of a flexible flag in axial flow, can be used to harvest energy if one is able to convert the solid energy into electricity. Here, this is achieved using piezoelectric patches attached to the surface of the flag that convert the solid deformation into an electric current powering purely resistive output circuits. Nonlinear numerical simulations in the slender-body limit, based on an explicit description of the coupling between the fluid-solid and electric systems, are used to determine the harvesting efficiency of the system, namely the fraction of the flow kinetic energy flux effectively used to power the output circuit, and its evolution with the system's parameters. The role of the tuning between the characteristic frequencies of the fluid-solid and electric systems is emphasized, as well as the critical impact of the piezoelectric coupling intensity. High fluid loading, classically associated with destabilization by ...

Michelin, Sebastien

2012-01-01T23:59:59.000Z

73

Systematic Study of Directed Flow at RHIC Energies  

E-Print Network (OSTI)

Directed flow, v1, of charged hardons has been measured in Au-Au collisions at RHIC for center-of-mass energies sqrt(sNN) = 19.6, 130, 62.4, and 200 GeV using the PHOBOS detector. The large acceptance of PHOBOS for charged particles allows measurements over the full range of pseudorapidity |eta| <5.4. The results for a symmetric subevent method are shown at all four energies. Comparison is made to a mixed harmonic method for the highest energy, and compared to similar results from the STAR collaboration.

Alice C. Mignerey; for the Phobos Collaboration

2005-10-10T23:59:59.000Z

74

Minimum Stream Flow Standards (Connecticut) | Department of Energy  

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

Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations apply to all dams and structures which impound or divert waters on rivers or their tributaries, with some exceptions. The

75

Energy flows are shown in energy units as well as dollar values...  

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

flows are shown in energy units as well as dollar values. Financial and technical management can now communicate by looking at data that is meaningful to both- One of the...

76

Trace element emissions  

SciTech Connect

The Energy & Environmental Research Center (EERC) is carrying out an investigation that will provide methods to predict the fate of selected trace elements in integrated gasification combined cycle (IGCC) and integrated gasification fuel cell (IGFC) systems to aid in the development of methods to control the emission of trace elements determined to be air toxics. The goal of this project is to identify the effects of critical chemical and physical transformations associated with trace element behavior in IGCC and IGFC systems. The trace elements included in this project are arsenic, chromium, cadmium, mercury, nickel, selenium, and lead. The research seeks to identify and fill, experimentally and/or theoretically, data gaps that currently exist on the fate and composition of trace elements. The specific objectives are to (1) review the existing literature to identify the type and quantity of trace elements from coal gasification systems, (2) perform laboratory-scale experimentation and computer modeling to enable prediction of trace element emissions, and (3) identify methods to control trace element emissions.

Benson, S.A.; Erickson, T.A.; Steadman, E.N.; Zygarlicke, C.J.; Hauserman, W.B.; Hassett, D.J.

1994-10-01T23:59:59.000Z

77

Flow Cells for Energy Storage Workshop Summary Report  

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

Workshop Summary Report Workshop Summary Report Prepared for: U. S. Department of Energy Prepared by: Dr. Adam Z. Weber Lawrence Berkeley National Laboratory Organizing Committee: Michael Perry, UTRC Tom Zawodzinski, UTK and ORNL Ned Stetson, DOE EERE Mark Johnson, DOE ARPA-E Imre Gyuk, DOE OEDER i Executive Summary An essentially identical technology to a reversible fuel cell is that of a redox flow cell (RFC) or redox flow battery (RFB), where a RFC can be seen as merging the concepts of RFBs with recent improvements in fuel cells. To investigate how a RFC can be a grid-scale electrical- energy-storage (EES) system and the associated technological needs, this workshop was held. The specific objectives of the workshop were to understand the needs for applied research in RFCs; identify the grand challenges and prioritize R&D needs; and gather input for future

78

Trace Evidence  

Science Conference Proceedings (OSTI)

... Work with national and international ... 00 Optional Open House and Trace Analysis Lab Tours of ... Ethanol in Water Standard Reference Materials to ...

2012-12-06T23:59:59.000Z

79

Optimally profiling and tracing programs  

Science Conference Proceedings (OSTI)

This paper describes algorithms for inserting monitoring code to profile and trace programs. These algorithms greatly reduce the cost of measuring programs with respect to the commonly used technique of placing code in each basic block. Program profiling ... Keywords: control-flow graph, instruction tracing, instrumentation, profiling

Thomas Ball; James R. Larus

1994-07-01T23:59:59.000Z

80

Tracing Geothermal Fluids  

DOE Green Energy (OSTI)

Chemical compounds have been designed under this contract that can be used to trace water that has been injected into vapor-dominated and two-phase geothermal fields. Increased knowledge of the injection flow is provided by the tracers, and this augments the power that can be produced. Details on the stability and use of these tracers are included in this report.

Michael C. Adams Greg Nash

2004-03-31T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Energy-efficient algorithms for flow time minimization  

E-Print Network (OSTI)

We study scheduling problems in battery-operated computing devices, aiming at schedules with low total energy consumption. While most of the previous work has focused on finding feasible schedules in deadline-based settings, in this paper we are interested in schedules that guarantee good response times. More specifically, our goal is to schedule a sequence of jobs on a variable speed processor so as to minimize the total cost consisting of the energy consumption and the total flow time of all the jobs.

Susanne Albers

2006-01-01T23:59:59.000Z

82

Advanced Redox Flow Batteries for Stationary Electrical Energy Storage  

SciTech Connect

This report describes the status of the advanced redox flow battery research being performed at Pacific Northwest National Laboratories for the U.S. Department of Energys Energy Storage Systems Program. The Quarter 1 of FY2012 Milestone was completed on time. The milestone entails completion of evaluation and optimization of single cell components for the two advanced redox flow battery electrolyte chemistries recently developed at the lab, the all vanadium (V) mixed acid and V-Fe mixed acid solutions. All the single cell components to be used in future kW-scale stacks have been identified and optimized in this quarter, which include solution electrolyte, membrane or separator; carbon felt electrode and bi-polar plate. Varied electrochemical, chemical and physical evaluations were carried out to assist the component screening and optimization. The mechanisms of the battery capacity fading behavior for the all vanadium redox flow and the Fe/V battery were discovered, which allowed us to optimize the related cell operation parameters and continuously operate the system for more than three months without any capacity decay.

Li, Liyu; Kim, Soowhan; Xia, Guanguang; Wang, Wei; Yang, Zhenguo

2012-03-19T23:59:59.000Z

83

Flowing Wells, Arizona: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Arizona: Energy Resources Arizona: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 32.2939638°, -111.0098178° 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":32.2939638,"lon":-111.0098178,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

84

Science for Energy Flow | U.S. DOE Office of Science (SC)  

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

Science for Energy Flow Science for Energy Flow Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) News & Resources Program Summaries Brochures Reports Accomplishments Presentations BES and Congress Science for Energy Flow Energy Flow Diagram Seeing Matter Scale of Things Chart Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: sc.bes@science.doe.gov More Information » News & Resources Science for Energy Flow Print Text Size: A A A RSS Feeds FeedbackShare Page Powering the Future with a New Era of Science Click to enlarge photo. Enlarge Photo Energy Flow 2010

85

Tracing Very High Energy Tau Neutrinos from Cosmological Distances in Ice  

E-Print Network (OSTI)

Astrophysical sources of ultrahigh energy neutrinos yield tau neutrino fluxes due to neutrino oscillations. We study in detail the contribution of tau neutrinos with energies above $10^6$ GeV relative to the contribution of the other flavors. We consider several different initial neutrino fluxes and include tau neutrino regeneration in transit through the Earth and energy loss of charged leptons. We discuss signals of tau neutrinos in detectors such as IceCube, RICE and ANITA.

J. Jones; I. Mocioiu; I. Sarcevic; M. H. Reno

2004-08-04T23:59:59.000Z

86

An Energy Principle for Ideal MHD Equilibria with Flows  

SciTech Connect

In the standard ideal MHD energy principle for equilibria with no flows, the stability criterion, which is the defi niteness of the perturbed potential energy, is usually constructed from the linearized equation of motion. Equivalently while more straightforwardly, it can also be obtained from the second variation of the Hamiltonian calculated with proper constraints. For equilibria with flows, a stability criterion was proposed from the linearized equation of motion, but not explained as an energy principle1. In this paper, the second variation of the Hamiltonian is found to provide a stability criterion equivalent to, while more straightforward than, what was constructed from the linearized equation of motion. To calculate the variations of the Hamiltonian, a complete set of constraints on the dynamics of the perturbations is derived from the Euler-Poincare structure of the ideal MHD. In addition, a previous calculation of the second variation of the Hamiltonian was claimed to give a different stability criterion2, and in this paper we argue such a claim is incorrect.

Yao Zhou and Hong Qin

2013-03-11T23:59:59.000Z

87

Modelling and real-trace-based evaluation of static and dynamic coalescing for energy efficient ethernet  

Science Conference Proceedings (OSTI)

The IEEE Standard 802.3az, namely Energy Efficient Ethernet (EEE), has been recently introduced to reduce the power consumed in LANs. Since then, researchers have proposed various traffic shaping techniques to leverage EEE in order to boost power saving. ... Keywords: bidirectional gigabit links, dynamic coalescing, energy efficient ethernet

Angelos Chatzipapas, Vincenzo Mancuso

2013-01-01T23:59:59.000Z

88

Implementation of electric vehicle system based on solar energy in Singapore assessment of flow batteries for energy storage  

E-Print Network (OSTI)

For large-scale energy storage application, flow battery has the advantages of decoupled power and energy management, extended life cycles and relatively low cost of unit energy output ($/kWh). In this thesis, an overview ...

Chen, Yaliang

2009-01-01T23:59:59.000Z

89

Tracing Geothermal Fluids  

DOE Green Energy (OSTI)

Geothermal water must be injected back into the reservoir after it has been used for power production. Injection is critical in maximizing the power production and lifetime of the reservoir. To use injectate effectively the direction and velocity of the injected water must be known or inferred. This information can be obtained by using chemical tracers to track the subsurface flow paths of the injected fluid. Tracers are chemical compounds that are added to the water as it is injected back into the reservoir. The hot production water is monitored for the presence of this tracer using the most sensitive analytic methods that are economically feasible. The amount and concentration pattern of the tracer revealed by this monitoring can be used to evaluate how effective the injection strategy is. However, the tracers must have properties that suite the environment that they will be used in. This requires careful consideration and testing of the tracer properties. In previous and parallel investigations we have developed tracers that are suitable from tracing liquid water. In this investigation, we developed tracers that can be used for steam and mixed water/steam environments. This work will improve the efficiency of injection management in geothermal fields, lowering the cost of energy production and increasing the power output of these systems.

Michael C. Adams; Greg Nash

2004-03-01T23:59:59.000Z

90

Flow Test At Colrado Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Colrado Area (DOE GTP) Exploration Activity Details Location Colado Geothermal Area Exploration Technique Flow Test Activity Date Usefulness not indicated DOE-funding...

91

Provenance Traces  

E-Print Network (OSTI)

Provenance is information about the origin, derivation, ownership, or history of an object. It has recently been studied extensively in scientific databases and other settings due to its importance in helping scientists judge data validity, quality and integrity. However, most models of provenance have been stated as ad hoc definitions motivated by informal concepts such as "comes from", "influences", "produces", or "depends on". These models lack clear formalizations describing in what sense the definitions capture these intuitive concepts. This makes it difficult to compare approaches, evaluate their effectiveness, or argue about their validity. We introduce provenance traces, a general form of provenance for the nested relational calculus (NRC), a core database query language. Provenance traces can be thought of as concrete data structures representing the operational semantics derivation of a computation; they are related to the traces that have been used in self-adjusting computation, but differ in impor...

Cheney, James; Ahmed, Amal

2008-01-01T23:59:59.000Z

92

A Variable Refrigerant Flow Heat Pump Computer Model in EnergyPlus  

SciTech Connect

This paper provides an overview of the variable refrigerant flow heat pump computer model included with the Department of Energy's EnergyPlusTM whole-building energy simulation software. The mathematical model for a variable refrigerant flow heat pump operating in cooling or heating mode, and a detailed model for the variable refrigerant flow direct-expansion (DX) cooling coil are described in detail.

Raustad, Richard A. [Florida Solar Energy Center

2013-01-01T23:59:59.000Z

93

Information flow analysis of energy management in a smart grid  

Science Conference Proceedings (OSTI)

Information flow security within the context of multilevel security deals with ways to avoid unwanted information flow from a high level domain to a low level domain. Several confidentiality and information flow properties have been formalized in literature. ... Keywords: bisimulation based non-deducibility on compositions, confidentiality, cyber-physical system, information flow, non-inference, security

Ravi Akella; Bruce M. McMillin

2010-09-01T23:59:59.000Z

94

Money versus Time: Evaluation of Flow Control in Terms of Energy Consumption and Convenience  

E-Print Network (OSTI)

Flow control with the goal of reducing the skin friction drag on the fluid-solid interface is an active fundamental research area, motivated by its potential for significant energy savings and reduced emissions in the transport sector. Customarily, the performance of drag reduction techniques in internal flows is evaluated under two alternative flow conditions, i.e. at constant mass flow rate or constant pressure gradient. Successful control leads to reduction of drag and pumping power within the former approach, whereas the latter leads to an increase of the mass flow rate and pumping power. In practical applications, however, money and time define the flow control challenge: a compromise between the energy expenditure (money) and the corresponding convenience (flow rate) achieved with that amount of energy has to be reached so as to accomplish a goal which in general depends on the specific application. Based on this idea, we derive two dimensionless parameters which quantify the total energy consumption an...

Frohnapfel, Bettina; Quadrio, Maurizio

2012-01-01T23:59:59.000Z

95

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

96

Computational Fluid Dynamics Modeling of Atmospheric Flow Applied to Wind Energy Research.  

E-Print Network (OSTI)

??High resolution atmospheric flow modeling using computational fluid dynamics (CFD) has many applications in the wind energy industry. A well designed model can accurately calculate (more)

Russell, Alan

2009-01-01T23:59:59.000Z

97

Prius: generic hybrid trace compression for wireless sensor networks  

Science Conference Proceedings (OSTI)

Several diagnostic tracing techniques (e.g., event, power, and control-flow tracing) have been proposed for run-time debugging and postmortem analysis of wireless sensor networks (WSNs). Traces generated by such techniques can become large, defying the ... Keywords: compression, sensor networks, tracing

Vinaitheerthan Sundaram; Patrick Eugster; Xiangyu Zhang

2012-11-01T23:59:59.000Z

98

Property:FirstWellFlowComments | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Property Name FirstWellFlowComments Property Type String Pages using the property "FirstWellFlowComments" Showing 1 page using this property. C...

99

Dixie Valley Six Well Flow Test | Open Energy Information  

Open Energy Info (EERE)

Six Well Flow Test Six Well Flow Test Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Dixie Valley Six Well Flow Test Abstract A six well flow test was conducted during 1986 at the Dixie Valley geothermal field. Flow duration lasted from 40 to 74 days with a maximum rate of 5.9 million pounds/hour. During the test, downhole pressures were monitored in eight surrounding wells. Downhole pressure and temperature surveys were run in each of the flowing wells,usually in conjunction with productivity tests. Results from the flow test and earlier interference tests indicate that six wells are capable of providing in excess of the 4.5 million pounds/hour required for a 62 mw (gross) power plant. Author William L. Desormier Published Journal Geothermal Resources Council, TRANSACTIONS, 1987

100

CoreFlow Scientific Solutions Ltd | Open Energy Information  

Open Energy Info (EERE)

CoreFlow Scientific Solutions Ltd CoreFlow Scientific Solutions Ltd Jump to: navigation, search Name CoreFlow Scientific Solutions Ltd Place Yoqneam, Israel Zip 20692 Sector Solar Product Israel-based manufacturer of non-contact substrate processing, handling, and testing equipments for Flat Panel Display (FPD), semiconductor, and solar industries. References CoreFlow Scientific Solutions Ltd[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. CoreFlow Scientific Solutions Ltd is a company located in Yoqneam, Israel . References ↑ "CoreFlow Scientific Solutions Ltd" Retrieved from "http://en.openei.org/w/index.php?title=CoreFlow_Scientific_Solutions_Ltd&oldid=343913" Categories:

Note: This page contains sample records for the topic "traces energy flows" 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

Flow Test At Coso Geothermal Area (1978) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Coso Geothermal Area (1978) Flow Test At Coso Geothermal Area (1978) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Flow Test Activity Date 1978 Usefulness not indicated DOE-funding Unknown Notes Flow tests of well CGEH No. 1 were conducted. LBL performed eight temperature surveys after completion of the well to estimate equilibrium reservoir temperatures. Downhole fluid samples were obtained by the U.S. Geological Survey (USGS) and Lawrence Berkeley Laboratory (LBL), and a static pressure profile was obtained. The first test began September 5, 1978 using nitrogen stimulation to initiate flow; this procedure resulted in small flow and subsequent filling of the bottom hole with drill cuttings. The second test, on November 2, 1978, utilized a nitrogen-foam-water mixture to clean residual particles from bottom hole,

102

MHK Technologies/GreenFlow Turbines | Open Energy Information  

Open Energy Info (EERE)

GreenFlow Turbines GreenFlow Turbines < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage GreenFlow Turbines.jpg Technology Profile Primary Organization Gulfstream Technologies Technology Resource Click here Current Technology Type Click here Cross Flow Turbine Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description Targeted at commercial sites with large water flow volume These hydro turbines range in size from 50kW to 750kW with many sites able to house multiple units Technology Dimensions Device Testing Date Submitted 55:53.9 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/GreenFlow_Turbines&oldid=681584

103

Energy of eigen-modes in magnetohydrodynamic flows of ideal fluids  

E-Print Network (OSTI)

Analytical expression for energy of eigen-modes in magnetohydrodynamic flows of ideal fluids is obtained. It is shown that the energy of unstable modes is zero, while the energy of stable oscillatory modes (waves) can assume both positive and negative values. Negative energy waves always correspond to non-symmetric eigen-modes -- modes that have a component of wave-vector along the equilibrium velocity. These results suggest that all non-symmetric instabilities in ideal MHD systems with flows are associated with coupling of positive and negative energy waves. As an example the energy of eigen-modes is calculated for incompressible conducting fluid rotating in axial magnetic field.

I. V. Khalzov; A. I. Smolyakov; V. I. Ilgisonis

2007-12-11T23:59:59.000Z

104

The International Heat Flow Commission | Open Energy Information  

Open Energy Info (EERE)

The International Heat Flow Commission The International Heat Flow Commission Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: The International Heat Flow Commission Details Activities (1) Areas (1) Regions (0) Abstract: Unavailable Author(s): A. E. Beck, V. Cermak Published: Geothermics, 1989 Document Number: Unavailable DOI: Unavailable Source: View Original Journal Article Data Acquisition-Manipulation (Beck & Cermak, 1989) Unspecified Retrieved from "http://en.openei.org/w/index.php?title=The_International_Heat_Flow_Commission&oldid=387748" Category: Reference Materials What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 1863774514

105

Flow Test At Wister Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Wister Area (DOE GTP) Exploration Activity Details Location Wister Area Exploration...

106

Flow Test At Alum Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Alum Geothermal Area (DOE GTP) Exploration Activity Details Location Alum Geothermal...

107

Flow Test At Maui Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Maui Area (DOE GTP) Exploration Activity Details Location Maui Area Exploration...

108

MHK Technologies/Cross Flow Turbine | Open Energy Information  

Open Energy Info (EERE)

Flow Turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Technology Profile Primary Organization Marine Renewable Technologies Technology...

109

Multimedia Trace Elements Measurements  

Science Conference Proceedings (OSTI)

Current and future trace element regulations on flue gas emissions, water discharges, and solid waste disposal will result in increasingly stringent limits and substantially increased costs for energy companies. As a result, there is a critical need to address environmental pollutant releases in a holistic, multimedia manner so that a pollutant removed by a control technology in one medium (for example, flue gas) is properly managed in regard to discharges in the other media (water and solid waste). This...

2008-03-25T23:59:59.000Z

110

Trace metal transformation in gasification  

SciTech Connect

The Energy & Environmental Research Center (EERC) is carrying out an investigation that will provide methods to predict the fate of selected trace elements in integrated gasification combined cycle (IGCC) and integrated gasification fuel cell (IGFC) systems to aid in the development of methods to control the emission of trace elements determined to be air toxics. The goal of this project is to identify the effects of critical chemical and physical transformations associated with trace element behavior in IGCC and IGFC systems. The trace elements included in this project are arsenic, chromium, cadmium, mercury, nickel, selenium, and lead. The research seeks to identify and fill, experimentally and/or theoretically, data gaps that currently exist on the fate and composition of trace elements. The specific objectives are to 1) review the existing literature to identify the type and quantity of trace elements from coal gasification systems, 2) perform laboratory-scale experimentation and computer modeling to enable prediction of trace element emissions, and 3) identify methods to control trace element emissions.

Benson, S.A.; Erickson, T.A.; Zygarlicke, C.J.; O`Keefe, C.A.; Katrinak, K.A.; Allen, S.E.; Hassett, D.J.; Hauserman, W.B. [North Dakota Univ., Grand Forks, ND (United States). Energy and Environmental Research Center; Holcombe, N.T. [USDOE Morgantown Energy Technology Center, WV (United States)

1996-12-31T23:59:59.000Z

111

Trace metal transformations in gasification  

SciTech Connect

The Energy & Environmental Research Center (EERC) is carrying out an investigation that will provide methods to predict the fate of selected trace elements in integrated gasification combined cycle (IGCC) and integrated gasification fuel cell (IGFC) systems to aid in the development of methods to control the emission of trace elements determined to be air toxics. The goal of this project is to identify the effects of critical chemical and physical transformations associated with trace element behavior in IGCC and IGFC systems. The trace elements included in this project are arsenic, chromium, cadmium, mercury, nickel, selenium, and lead. The research seeks to identify and fill, experimentally and/or theoretically, data gaps that currently exist on the fate and composition of trace elements. The specific objectives are to (1) review the existing literature to identify the type and quantity of trace elements from coal gasification systems, (2) perform laboratory-scale experimentation and computer modeling to enable prediction of trace element emissions, and (3) identify methods to control trace element emissions.

Benson, S.; Erickson, T.A.; Zygarlicke, C.J. [and others

1995-12-01T23:59:59.000Z

112

Waste-Lithium-Liquid (WLL) Flow Battery for Stationary Energy Storage Applications Youngsik Kim* and Nina MahootcheianAsl  

E-Print Network (OSTI)

Waste-Lithium-Liquid (WLL) Flow Battery for Stationary Energy Storage Applications Youngsik Kim in a Waste-Lithium-Liquid (WLL) flow battery that can be used in a stationary energy storage application. Li

Zhou, Yaoqi

113

Solyndra Facts vs. Fiction: Cash Flow Modeling | Department of Energy  

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

You are here You are here Home » Solyndra Facts vs. Fiction: Cash Flow Modeling Solyndra Facts vs. Fiction: Cash Flow Modeling September 23, 2011 - 5:25pm Addthis Questions have been raised about a quote selectively pulled from an Aug. 20, 2009 email to make it look like Solyndra would run out of cash by Sept. 2011. To be clear, the analysis addressed in that email did not refer to Solyndra's corporate cash flow, but rather the cash flow for a subsidiary of Solyndra - the "Fab 2 Project Company." The cash flow models never said that Solyndra (the parent company) would run short of cash in September 2011. The email noted that the subsidiary was projected to have relatively low levels of cash in one particular month, and that the parent company would need to make up any potential shortfall.

114

MHK Technologies/Uppsala Cross flow Turbine | Open Energy Information  

Open Energy Info (EERE)

flow Turbine flow Turbine < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Uppsala Cross flow Turbine.gif Technology Profile Primary Organization Uppsala University Technology Resource Click here Wave Technology Type Click here Cross Flow Turbine Technology Readiness Level Click here TRL 4 Proof of Concept Technology Description A cross flow turbine with fixed blade pitch is directly connected i e no gearbox to a low speed generator The generator is designed to give good efficiency over a wide range of speeds and loads The output voltage and current from the generator will be rectified and then inverted to grid specifications Mooring Configuration Gravity base Optimum Marine/Riverline Conditions Not yet determined Research concerns velocities below and above 1 m s

115

A Modeling and Optimization Approach for Multiple Energy Carrier Power Flow  

E-Print Network (OSTI)

Abstract This paper presents a general power flow and optimization approach for power systems including multiple energy carriers, such as electricity, natural gas, and district heat. The model is based on a conceptual approach for the inclusion of distributed resources. Couplings between the different energy carriers are regarded explicitly, enabling investigations in power flow and marginal price interactions. Optimal demand, conversion, and transmission of multiple energy carriers within a system is formulated as a combined optimal power flow problem. A numerical example demonstrates how the method can be used for different system studies. I.

Martin Geidl; Gran Andersson

2005-01-01T23:59:59.000Z

116

Wind resource evaluation at the Caltech Field Laboratory for Optimized Wind Energy (FLOWE)  

E-Print Network (OSTI)

Wind resource evaluation at the Caltech Field Laboratory for Optimized Wind Energy (FLOWE) Quinn;Caltech Field Laboratory for Optimized Wind Energy (reduced visual signature) #12;Field Study Results 6 continuous hours existing wind farms Planform Kinetic Energy Flux = U (W m-2) mean power above cut

117

Heat Flow At Standard Depth | Open Energy Information  

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 » Heat Flow At Standard Depth Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Heat Flow At Standard Depth Details Activities (2) Areas (1) Regions (0) Abstract: Secular and long-term periodic changes in surface temperature cause perturbations to the geothermal gradient which may be significant to depths of at least 1000 m, and major corrections are required to determine absolute values of heat flow from the Earth's interior. However, detailed climatic models remain contentious and estimates of error in geothermal gradients differ widely. Consequently, regions of anomalous heat flow which

118

Flow near the outlet of a geothermal energy reservoir  

DOE Green Energy (OSTI)

Steady, incompressible flow converging radially between two stationary, parallel plates was investigated both numerically and experimentally. Flow ranges investigated were laminar, turbulent, and transitional. For laminar flows at dimensionless radii (2r..sqrt pi nu../Qt) much greater than one the velocity profile becomes parabolic and invariant. At radii less than one a boundary layer character evolves with an approximately uniform core region and the boundary layer thickness decreases from one-half the disk spacing to values proportional to the local radii as the flow accelerates towards the center. At large radii the friction factor approaches the classic value obtained for fully developed rectilinear flow between infinite plated, 6..nu../Vt, but at small radii it approaches the constant 2.17/..sqrt..R/sub 0/, where R/sub 0/ is an overall Reynolds number based on the volumetric flow rate and the disk spacing and is independent of radius. Tabular and graphical results are provided for the intermediate range of radii, where both viscous and inertial effects are important, and exact analyses were not available.

Murphy, H.D.

1979-07-01T23:59:59.000Z

119

Water flows, energy demand, and market analysis of the informal water sector in Kisumu, Kenya  

E-Print Network (OSTI)

Analysis Water flows, energy demand, and market analysis of the informal water sector in Kisumu Available online xxxx Keywords: Informal water sector Water flows Developing countries Water market analysis to cope with popu- lation growth. Informal water businesses fulfill unmet water supply needs, yet little

Elimelech, Menachem

120

B-Spline Image Model for Energy Minimization-Based Optical Flow Estimation  

Science Conference Proceedings (OSTI)

Robust estimation of the optical flow is addressed through a multiresolution energy minimization. It involves repeated evaluation of spatial and temporal gradients of image intensity which rely usually on bilinear interpolation and image filtering. We ... Keywords: Optical flow (OF), robust estimation, splines

G. Le Besnerais; F. Champagnat

2006-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

An energy preserving formulation for the simulation of multiphase turbulent flows  

Science Conference Proceedings (OSTI)

In this manuscript we propose an energy preserving formulation for the simulation of multiphase flows. The new formulation reduces the numerical diffusion with respect to previous formulations dealing with multiple phases, which makes this method to ... Keywords: Advection scheme, Multiphase flows, Turbulence

D. Fuster

2013-02-01T23:59:59.000Z

122

Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) |  

Open Energy Info (EERE)

Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson 2007) Home > Groups > Energy Systems Integration Qinsun's picture Submitted by Qinsun(35) Member 15 November, 2012 - 13:04 Literature Review The author proposed a linear static state model for multiple energy carriers. The optimal power flow and economic dispatch was determined. The method is a simple method of integrated system planning The methods used in the paper are linear deterministic system without control signal, optimal power flow and economic dispatch The proposed method stabilized the power grid, reduced the marginal cost of electricity, and increased the marginal cost of natural gas. The strength of the proposed method is following: 1. it is integrated; 2. it secures to converge;

123

Simulation and visualization of fields and energy flows in electric circuits with idealized geometries  

E-Print Network (OSTI)

This thesis develops a method to simulate and visualize the fields and energy flows in electric circuits, using a simplified physical model based on an idealized geometry. The physical models combine and extend previously ...

Ohannessian, Mesrob I., 1981-

2005-01-01T23:59:59.000Z

124

A Cascade-Type Global Energy Conversion Diagram Based on WaveMean Flow Interactions  

Science Conference Proceedings (OSTI)

A cascade-type energy conversion diagram is proposed for the purpose of diagnosing the atmospheric general circulation based on wavemean flow interactions. Mass-weighted isentropic zonal means facilitate the expression of nongeostrophic wave ...

Sachiyo Uno; Toshiki Iwasaki

2006-12-01T23:59:59.000Z

125

R&D Activities of Redox Flow Battery for Energy Storage at DICP  

Science Conference Proceedings (OSTI)

Presentation Title, R&D Activities of Redox Flow Battery for Energy Storage at DICP ... Optimization of Na0.44MnO2 Cathode Material for Use in Aqueous...

126

Property of Zero-Energy Flows and Creations and Annihilations of Vortices in Quantum Mechanics  

E-Print Network (OSTI)

Time-dependent processes accompanied by vortex creations and annihilations are investigated in terms of the eigenstates in conjugate spaces of Gel'fand triplets in 2-dimensions. Creations and annihilations of vortices are described by the insertions of unstable eigenstates with complex-energy eigenvalues into stable states written by the superposition of eigenstates with zero-energy eigenvalues. Some concrete examples are presented in terms of the eigenfunctions of the 2-dimensional parabolic potential barrier, i.e., $-m \\gamma^2 (x^2+y^2)/2$. We show that the processes accompanied by vortex creations and annihilations can be analyzed in terms of the eigenfunctions in the conjugate spaces of Gel'fand triplets. Throughout these examinations we point out three interesting properties of the zero-energy flows. (i) Mechanisms using the zero-energy flows are absolutely economical from the viewpoint of energy consumption. (ii) An enormous amount of informations can be discriminated in terms of the infinite variety of the zero-energy flows. (iii) The zero-energy flow patterns are absolutely stable in any disturbance by inserting arbitrary decaying flows with complex-energy eigenvalues.

Tsunehiro Kobayashi

2002-11-19T23:59:59.000Z

127

Property:FirstWellFlowRate | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:FirstWellFlowRate Jump to: navigation, search Property Name FirstWellFlowRate Property Type Quantity Use this type to express a quantity of flow rate by mass. The default unit is kilogram per second (kg/s). Acceptable units (and their conversions) are: Kilogram per second - 1 kg/s,kilogram per second Kilogram per minute - 60 kg/min,kilogram per minute Kilogram per hour - 3600 kg/hour,kilogram per hour,kg/h Kilogram per day - 86400 kg/day,kilogram per day Liter per second - 1.0000000001 L/s,l/s,liters per second,l/sec,L/sec,liters/sec,Liters/sec Gallon per minute - 15.85032 gal/min,gallons per minute,gpm,gallons/min,Gallons/min Barrel per minute - 0.00839 bar/min,barrels per minute,barrel/min,barrels/min,Barrels/min

128

Property:Geothermal/FlowLmin | Open Energy Information  

Open Energy Info (EERE)

FlowLmin FlowLmin Jump to: navigation, search This is a property of type Number. Subproperties This property has the following 117 subproperties: A Alive Polarity's Murrietta Hot Spring Pool & Spa Low Temperature Geothermal Facility Aqua Caliente County Park Pool & Spa Low Temperature Geothermal Facility Avila Hot Springs Spa & RV Resort Pool & Spa Low Temperature Geothermal Facility B Bagby Hot Springs Pool & Spa Low Temperature Geothermal Facility Baileys Hot Springs Pool & Spa Low Temperature Geothermal Facility Baker's Bar M Pool & Spa Low Temperature Geothermal Facility Banbury Hot Springs Pool & Spa Low Temperature Geothermal Facility Baranof Pool & Spa Low Temperature Geothermal Facility Bashfords Hot Mineral Spa Pool & Spa Low Temperature Geothermal Facility

129

Property:Geothermal/FlowGpm | Open Energy Information  

Open Energy Info (EERE)

FlowGpm FlowGpm Jump to: navigation, search This is a property of type Number. Subproperties This property has the following 115 subproperties: A Alive Polarity's Murrietta Hot Spring Pool & Spa Low Temperature Geothermal Facility Aqua Caliente County Park Pool & Spa Low Temperature Geothermal Facility Avila Hot Springs Spa & RV Resort Pool & Spa Low Temperature Geothermal Facility B Bagby Hot Springs Pool & Spa Low Temperature Geothermal Facility Baileys Hot Springs Pool & Spa Low Temperature Geothermal Facility Baker's Bar M Pool & Spa Low Temperature Geothermal Facility Banbury Hot Springs Pool & Spa Low Temperature Geothermal Facility Baranof Pool & Spa Low Temperature Geothermal Facility Bashfords Hot Mineral Spa Pool & Spa Low Temperature Geothermal Facility

130

Formulated 2-Traces - CECM  

E-Print Network (OSTI)

Nov 19, 1997 ... next up previous. Next: Characteristics of truth tables Up: Introduction to Traces Previous: Definition of the n-Trace...

131

Renormalization Group Flow and the Dark Energy Problem  

E-Print Network (OSTI)

Casimir energy is calculated for 5D scalar theory in the {\\it warped} geometry. A new regularization, called {\\it sphere lattice regularization}, is taken. The regularized configuration is {\\it closed-string like}. We numerically evaluate $\\La$(4D UV-cutoff), $\\om$(5D bulk curvature, extra space UV-boundary parameter) and $T$(extra space IR-boundary parameter) dependence of Casimir energy. 5D Casimir energy is {\\it finitely} obtained after the {\\it proper renormalization procedure.} The {\\it warp parameter} $\\om$ suffers from the {\\it renormalization effect}. Regarding Casimir energy as the main contribution to the cosmological term, we examine the dark energy problem.

Ichinose, Shoichi

2011-01-01T23:59:59.000Z

132

NETL: Novel Flow Sheet for Low Energy CO2 Capture Enabled by Biocatalyst  

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

Novel Flow Sheet for Low Energy CO2 Capture Enabled by Biocatalyst Delivery System Novel Flow Sheet for Low Energy CO2 Capture Enabled by Biocatalyst Delivery System Project No.: DE-FE0012862 Akermin is conducting laboratory and integrated bench-scale pilot testing to validate the performance of their next generation Biocatalyst Delivery System (BDS). This effort builds upon work conducted under a previous project. The novel system enables on-stream replacement of the catalyst and enables integration with an advanced process flow scheme. Akermin is exploring an enzyme-enabled advanced process flow scheme with non-volatile capture solutions, AKM-24 and potassium carbonate. The advanced process flow scheme is projected to have lower parasitic energy requirements and lower capital costs resulting in greater than 30 percent reduction in the cost of capture. The novel flow sheet enabled by the biocatalyst permits regeneration at lower temperatures allowing heat integration with the lowest grade steam from the power plant and minimizing water consumption. The existing 500 standard liters per minute (SLPM) bench unit will be modified to incorporate the next-generation BDS, accommodate the new process flow scheme, and reduce heat loss for better quantification of energy performance. The modified bench unit will be operated at the National Carbon Capture Center on actual flue gas.

133

Flow Test At Coso Geothermal Area (1985-1986) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Coso Geothermal Area (1985-1986) Flow Test At Coso Geothermal Area (1985-1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Coso Geothermal Area (1985-1986) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Flow Test Activity Date 1985 - 1986 Usefulness not indicated DOE-funding Unknown Exploration Basis Understand the connectivity of the production and injection wells. Notes A long-term flow test was conducted involving one producing well (well 43-7), one injector (well 88-1), and two observation wells (well 66-6 and California Energy Co's well 71A-7). The flow test included a well production metering system and a water injection metering system. References Sanyal, S.; Menzies, A.; Granados, E.; Sugine, S.; Gentner, R.

134

The Electrochemical Flow Capacitor for Efficient Grid-Scale Energy ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Rapid energy recovery is important to enable better utilization of fluctuating renewable sources, as well as to increase the efficiency of the grid.

135

File:0 - OverallFlow-1.pdf | Open Energy Information  

Open Energy Info (EERE)

OverallFlow-1.pdf OverallFlow-1.pdf Jump to: navigation, search File File history File usage File:0 - OverallFlow-1.pdf Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(1,275 × 1,650 pixels, file size: 32 KB, MIME type: application/pdf) File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 14:48, 11 September 2012 Thumbnail for version as of 14:48, 11 September 2012 1,275 × 1,650 (32 KB) Djenne (Talk | contribs) 09:08, 7 June 2012 Thumbnail for version as of 09:08, 7 June 2012 1,275 × 1,650 (16 KB) Dklein2012 (Talk | contribs) 11:26, 4 May 2012 Thumbnail for version as of 11:26, 4 May 2012 1,275 × 1,650 (16 KB) Kyoung (Talk | contribs) You cannot overwrite this file.

136

Energy and materials flows in the iron and steel industry  

SciTech Connect

Past energy-consumption trends and future energy-conservation opportunities are investigated for the nation's iron and steel industry. It is estimated that, in 1980, the industry directly consumed approximately 2.46 x 10/sup 15/ Btu of energy (roughly 3% of total US energy consumption) to produce 111 million tons of raw steel and to ship 84 million tons of steel products. Direct plus indirect consumption is estimated to be about 3.1 x 10/sup 15/ Btu. Of the set of conservation technologies identified, most are judged to be ready for commercialization if and when the industry's capital formation and profitability problems are solved and the gradual predicted increase in energy prices reduces the payback periods to acceptable levels.

Sparrow, F.T.

1983-06-01T23:59:59.000Z

137

Understanding quantum polarized-light interference experiments through electromagnetic energy flow lines  

E-Print Network (OSTI)

General expressions to obtain the electromagnetic energy flow lines behind interference gratings are derived in the case where the incident light consists of a polarized monochromatic plane wave. These flow lines show how the electromagnetic energy redistributes in space (behind the grating) until the Fraunhofer regime is reached, thus providing an interpretation based on photon paths for the physics underlying interference phenomena with light. Within this interpretation, one finds that the outcome from a Young's experiment is related in a simple manner to how the electromagnetic energy flux is influenced by the experimental setup, specifically, how the presence of polarizers on each slit and the boundaries imposed by having one or both slits open affect at each time the electromagnetic energy flow, which is directly linked to the Arago-Fresnel laws.

Sanz, A S; Bozic, M; Miret-Arts, S

2009-01-01T23:59:59.000Z

138

UNDERSTANDING FLOW OF ENERGY IN BUILDINGS USING MODAL ANALYSIS METHODOLOGY  

SciTech Connect

It is widely understood that energy storage is the key to integrating variable generators into the grid. It has been proposed that the thermal mass of buildings could be used as a distributed energy storage solution and several researchers are making headway in this problem. However, the inability to easily determine the magnitude of the buildings effective thermal mass, and how the heating ventilation and air conditioning (HVAC) system exchanges thermal energy with it, is a significant challenge to designing systems which utilize this storage mechanism. In this paper we adapt modal analysis methods used in mechanical structures to identify the primary modes of energy transfer among thermal masses in a building. The paper describes the technique using data from an idealized building model. The approach is successfully applied to actual temperature data from a commercial building in downtown Boise, Idaho.

John Gardner; Kevin Heglund; Kevin Van Den Wymelenberg; Craig Rieger

2013-07-01T23:59:59.000Z

139

Energy Principles for Self-Gravitating Barotropic Flows: I. General Theory  

E-Print Network (OSTI)

The following principle of minimum energy may be a powerful substitute to the dynamical perturbation method, when the latter is hard to apply. Fluid elements of self-gravitating barotropic flows, whose vortex lines extend to the boundary of the fluid, are labelled in such a way that any change of trial configurations automatically preserves mass and circulation. The velocity field is given by a mass conserving Clebsch representation. With three independent Lagrangian functions, the total energy is stationary for all small variations about a flow with fixed linear and angular momenta provided Euler's equations for steady motion are satisfied. Thus, steady flows are stable if their energy is minimum. Since energy is here minimized subject to having local and global contants of the motion fixed, stability limits obtained that way are expected to be close to limits given by dynamical perturbation methods. Moreover, the stability limits are with respect to arbitrary, not necessary small, perturbations. A weaker form of the energy principle is also given which may be easier to apply. The Lagrangian functional, with the same three Lagrange variables is stationary for the fully time dependent Euler equations. It follows that the principle of minimum energy gives stability conditions that are both necessary and sufficient if terms linear in time derivatives (gyroscopic terms) are absent from the Lagrangian. The gyroscopic term for small deviations around steady flows is given explicitly. Key words: Energy variational principle; Self-gravitating systems; Stability of fluids.

Joseph Katz; Shogo Inagaki; Asher Yahalom

1995-01-15T23:59:59.000Z

140

High Performance Hydrogen/Bromine Redox Flow Battery for Grid-Scale Energy  

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

High Performance Hydrogen/Bromine Redox Flow Battery for Grid-Scale Energy High Performance Hydrogen/Bromine Redox Flow Battery for Grid-Scale Energy Storage Title High Performance Hydrogen/Bromine Redox Flow Battery for Grid-Scale Energy Storage Publication Type Journal Article Year of Publication 2012 Authors Cho, Kyu Taek, Paul L. Ridgway, Adam Z. Weber, Sophia Haussener, Vincent S. Battaglia, and Venkat Srinivasan Journal Journal of the Electrochemical Society Volume 159 Issue 11 Pagination A1806 - A1815 Date Published 01/2012 ISSN 0013-4651 Keywords hydrogen/bromine, redox flow battery Abstract The electrochemical behavior of a promising hydrogen/bromine redox flow battery is investigated for grid-scale energy-storage application with some of the best redox-flow-battery performance results to date, including a peak power of 1.4 W/cm(2) and a 91% voltaic efficiency at 0.4 W/cm(2) constant-power operation. The kinetics of bromine on various materials is discussed, with both rotating-disk-electrode and cell studies demonstrating that a carbon porous electrode for the bromine reaction can conduct platinum-comparable performance as long as sufficient surface area is realized. The effect of flow-cell designs and operating temperature is examined, and ohmic and mass-transfer losses are decreased by utilizing a flow-through electrode design and increasing cell temperature. Charge/discharge and discharge-rate tests also reveal that this system has highly reversible behavior and good rate capability.

Note: This page contains sample records for the topic "traces energy flows" 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

Incident-energy and system-size dependence of directed flow  

E-Print Network (OSTI)

We present STAR's measurements of directed flow for charged hadrons in Au+Au and Cu+Cu collisions at $\\sqrt{s_\\mathrm{NN}} = 200$ GeV and 62.4 GeV, as a function of pseudorapidity, transverse momentum and centrality. We find that directed flow depends on the incident energy, but not on the system size. We extend the validity of limiting fragmentation hypothesis to different collision systems.

Gang Wang

2007-01-23T23:59:59.000Z

142

ENERGY EFFICIENT THERMAL MANAGEMENT FOR NATURAL GAS ENGINE AFTERTREATMENT VIA ACTIVE FLOW CONTROL  

Science Conference Proceedings (OSTI)

The project is focused on the development of an energy efficient aftertreatment system capable of reducing NOx and methane by 90% from lean-burn natural gas engines by applying active exhaust flow control. Compared to conventional passive flow-through reactors, the proposed scheme cuts supplemental energy by 50%-70%. The system consists of a Lean NOx Trap (LNT) system and an oxidation catalyst. Through alternating flow control, a major amount of engine exhaust flows through a large portion of the LNT system in the absorption mode, while a small amount of exhaust goes through a small portion of the LNT system in the regeneration or desulfurization mode. By periodically reversing the exhaust gas flow through the oxidation catalyst, a higher temperature profile is maintained in the catalyst bed resulting in greater efficiency of the oxidation catalyst at lower exhaust temperatures. The project involves conceptual design, theoretical analysis, computer simulation, prototype fabrication, and empirical studies. This report details the progress during the first twelve months of the project. The primary activities have been to develop the bench flow reactor system, develop the computer simulation and modeling of the reverse-flow oxidation catalyst, install the engine into the test cell, and begin design of the LNT system.

David K. Irick; Ke Nguyen

2004-04-01T23:59:59.000Z

143

Energy Efficient Thermal Management for Natural Gas Engine Aftertreatment via Active Flow Control  

SciTech Connect

The project is focused on the development of an energy efficient aftertreatment system capable of reducing NOx and methane by 90% from lean-burn natural gas engines by applying active exhaust flow control. Compared to conventional passive flow-through reactors, the proposed scheme cuts supplemental energy by 50%-70%. The system consists of a Lean NOx Trap (LNT) system and an oxidation catalyst. Through alternating flow control, a major amount of engine exhaust flows through a large portion of the LNT system in the absorption mode, while a small amount of exhaust goes through a small portion of the LNT system in the regeneration or desulfurization mode. By periodically reversing the exhaust gas flow through the oxidation catalyst, a higher temperature profile is maintained in the catalyst bed resulting in greater efficiency of the oxidation catalyst at lower exhaust temperatures. The project involves conceptual design, theoretical analysis, computer simulation, prototype fabrication, and empirical studies. This report details the progress during the first twelve months of the project. The primary activities have been to develop the bench flow reactor system, develop the computer simulation and modeling of the reverse-flow oxidation catalyst, install the engine into the test cell, and begin design of the LNT system.

David K. Irick; Ke Nguyen; Vitacheslav Naoumov; Doug Ferguson

2006-04-01T23:59:59.000Z

144

Energy Efficient Thermal Management for Natural Gas Engine Aftertreatment via Active Flow Control  

SciTech Connect

The project is focused on the development of an energy efficient aftertreatment system capable of reducing NOx and methane by 90% from lean-burn natural gas engines by applying active exhaust flow control. Compared to conventional passive flow-through reactors, the proposed scheme cuts supplemental energy by 50%-70%. The system consists of a Lean NOx Trap (LNT) system and an oxidation catalyst. Through alternating flow control, a major amount of engine exhaust flows through a large portion of the LNT system in the absorption mode, while a small amount of exhaust goes through a small portion of the LNT system in the regeneration or desulfurization mode. By periodically reversing the exhaust gas flow through the oxidation catalyst, a higher temperature profile is maintained in the catalyst bed resulting in greater efficiency of the oxidation catalyst at lower exhaust temperatures. The project involves conceptual design, theoretical analysis, computer simulation, prototype fabrication, and empirical studies. This report details the progress during the first twelve months of the project. The primary activities have been to develop the bench flow reactor system, develop the computer simulation and modeling of the reverse-flow oxidation catalyst, install the engine into the test cell, and begin design of the LNT system.

David K. Irick; Ke Nguyen; Vitacheslav Naoumov; Doug Ferguson

2005-04-01T23:59:59.000Z

145

A Stable Vanadium Redox-Flow Battery with High Energy Density for Large-scale Energy Storage  

SciTech Connect

Low cost, high performance redox flow batteries are highly demanded for up to multi-megawatt levels of renewable and grid energy storage. Here, we report a new vanadium redox flow battery with a significant improvement over the current technologies. This new battery utilizes a sulfate-chloride mixed solution, which is capable of dissolving more than 2.5 M vanadium or about a 70% increase in the energy storage capacity over the current vanadium sulfate system. More importantly, the new electrolyte remains stable over a wide temperature range of -5 to 60oC, potentially eliminating the need of active heat management. Its high energy density, broad operational temperature window, and excellent electrochemical performance would lead to a significant reduction in the cost of energy storage, thus accelerating its market penetration.

Li, Liyu; Kim, Soowhan; Wang, Wei; Vijayakumar, M.; Nie, Zimin; Chen, Baowei; Zhang, Jianlu; Xia, Guanguang; Hu, Jian Z.; Graff, Gordon L.; Liu, Jun; Yang, Zhenguo

2011-05-01T23:59:59.000Z

146

Quantum energy flow in atomic ions moving in magnetic fields  

E-Print Network (OSTI)

Using a combination of semiclassical and recently developed wave packet propagation techniques we find the quantum self-ionization process of highly excited ions moving in magnetic fields which has its origin in the energy transfer from the center of mass to the electronic motion. It obeys a time scale by orders of magnitude larger than the corresponding classical process. Importantly a quantum coherence phenomenon leading to the intermittent behaviour of the ionization signal is found and analyzed. Universal properties of the ionization process are established.

Vladimir Melezhik; Peter Schmelcher

2000-06-07T23:59:59.000Z

147

Energy flux fluctuations in a finite volume of turbulent flow  

E-Print Network (OSTI)

The flux of turbulent kinetic energy from large to small spatial scales is measured in a small domain B of varying size R. The probability distribution function of the flux is obtained using a time-local version of Kolmogorov's four-fifths law. The measurements, made at a moderate Reynolds number, show frequent events where the flux is backscattered from small to large scales, their frequency increasing as R is decreased. The observations are corroborated by a numerical simulation based on the motion of many particles and on an explicit form of the eddy damping.

Mahesh Bandi; Walter Goldburg; John Cressman Jr.; Alain Pumir

2006-07-19T23:59:59.000Z

148

Study of nuclear dynamics of neutron-rich colliding pair at energy of vanishing flow  

E-Print Network (OSTI)

We study nuclear dynamics at the energy of vanishing flow of neutron-rich systems having N/Z ratio 1.0, 1.6 and 2.0 throughout the mass range at semi central colliding geometry. In particular we study the behavior of average and maximum density with N/Z dependence of the system.

Sakshi Gautam

2011-07-28T23:59:59.000Z

149

TWO-PHASE FLOW IN GEOTHERMAL ENERGY SOURCES Annual Report Laurence...  

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

TWO-PHASE FLOW IN GEOTHERMAL ENERGY SOURCES Annual Report Laurence W. Ross Denver Research I n s t i t u t e U n i v e r s i t y o f Denver Denver, Colorado 80210 June 1 , 1975 -...

150

Radial flow has little effect on clusterization at intermediate energies in the framework of the Lattice Gas Model  

E-Print Network (OSTI)

The Lattice Gas Model was extended to incorporate the effect of radial flow. Contrary to popular belief, radial flow has little effect on the clusterization process in intermediate energy heavy-ion collisions except adding an ordered motion to the particles in the fragmentation source. We compared the results from the lattice gas model with and without radial flow to experimental data. We found that charge yields from central collisions are not significantly affected by inclusion of any reasonable radial flow.

C. B. Das; L. Shi; S. Das Gupta

2004-07-20T23:59:59.000Z

151

Coupling Air Flow Models to Load/Energy Models and Implications for  

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

Coupling Air Flow Models to Load/Energy Models and Implications for Coupling Air Flow Models to Load/Energy Models and Implications for Envelope Component Testing and Modeling Speaker(s): Brent Griffith Date: July 30, 2002 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Dariush Arasteh Air models allow accounting for air temperature variations within a thermal zone or along the surface of an envelope component. A recently completed ASHRAE research project (RP-1222) produced a source code toolkit focused on coupling airflow models to load routines typical of whole building energy simulation. The two modeling domains are computed separately (and iteratively) with relevant temperature boundary conditions passed back and forth. One of the air models in the toolkit is a new contribution to crude/fast airflow modeling that is based on solving the Euler equation

152

Energy and Buildings, 8 (1985) 105 -122 105 Temperature-and Wind-induced Air Flow Patterns  

E-Print Network (OSTI)

Energy and Buildings, 8 (1985) 105 - 122 105 Temperature- and Wind-induced Air Flow Patterns measurements, wind pressure data and air infiltration calculation. INTRODUCTION Studies on the energy,B. DICKINSON,D. GRIMSRUDand R. LIPSCHUTZ Energy Performance of Buildings Group, Energy and Environment Division

153

Flow Test At Chena Area (Benoit, Et Al., 2007) | Open Energy Information  

Open Energy Info (EERE)

Chena Area (Benoit, Et Al., 2007) Chena Area (Benoit, Et Al., 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Chena Area (Benoit, Et Al., 2007) Exploration Activity Details Location Chena Area Exploration Technique Flow Test Activity Date Usefulness not indicated DOE-funding Unknown References Dick Benoit, Gwen Holdmann, David Blackwell (2007) Low Cost Exploration, Testing, And Development Of The Chena Geothermal Resource Retrieved from "http://en.openei.org/w/index.php?title=Flow_Test_At_Chena_Area_(Benoit,_Et_Al.,_2007)&oldid=387083" Category: Exploration Activities What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers Energy blogs Linked Data Developer services OpenEI partners with a broad range of international organizations to grow

154

A TECHNOLOGY ASSESSMENT AND FEASIBILITY EVALUATION OF NATURAL GAS ENERGY FLOW MEASUREMENT ALTERNATIVES  

Science Conference Proceedings (OSTI)

Deregulation and open access in the natural gas pipeline industry has changed the gas business environment towards greater reliance on local energy flow rate measurement. What was once a large, stable, and well-defined source of natural gas is now a composite from many small suppliers with greatly varying gas compositions. Unfortunately, the traditional approach to energy flow measurement [using a gas chromatograph (GC) for composition assay in conjunction with a flow meter] is only cost effective for large capacity supplies (typically greater than 1 to 30 million scfd). A less costly approach will encourage more widespread use of energy measurement technology. In turn, the US will benefit from tighter gas inventory control, more efficient pipeline and industrial plant operations, and ultimately lower costs to the consumer. An assessment of the state and direction of technology for natural gas energy flow rate measurement is presented. The alternative technologies were ranked according to their potential to dramatically reduce capital and operating and maintenance (O and M) costs, while improving reliability and accuracy. The top-ranked technologies take an unconventional inference approach to the energy measurement problem. Because of that approach, they will not satisfy the fundamental need for composition assay, but have great potential to reduce industry reliance on the GC. Technological feasibility of the inference approach was demonstrated through the successful development of data correlations that relate energy measurement properties (molecular weight, mass-based heating value, standard density, molar ideal gross heating value, standard volumetric heating value, density, and volume-based heating value) to three inferential properties: standard sound speed, carbon dioxide concentration, and nitrogen concentration (temperature and pressure are also required for the last two). The key advantage of this approach is that inexpensive on-line sensors may be used to measure the inferential variables, which can then be applied (through the data correlations) to convert existing flow meters (ultrasonic, orifice, turbine, rotary, Coriolis, diaphragm, etc.) for on-line energy measurement. The practical issues for field development were evaluated using two transducers extracted from a $100 ultrasonic domestic gas meter, and a $400 infrared sensor.

Kendricks A. Behring II; Eric Kelner; Ali Minachi; Cecil R. Sparks; Thomas B. Morrow; Steven J. Svedeman

1999-01-01T23:59:59.000Z

155

Ricci dynamo stretch-shear plasma flows and magnetic energy bounds  

E-Print Network (OSTI)

Geometrical tools, used in Einstein's general relativity (GR), are applied to dynamo theory, in order to obtain fast dynamo action bounds to magnetic energy, from Killing symmetries in Ricci flows. Magnetic field is shown to be the shear flow tensor eigendirection, in the case of marginal dynamos. Killing symmetries of the Riemann metric, bounded by Einstein space, allows us to reduce the computations. Techniques used are similar to those strain decomposition of the flow in Sobolev space, recently used by Nu\\~nez [JMP \\textbf{43} (2002)] to place bounds in the magnetic energy in the case of hydromagnetic dynamos with plasma resistivity. Contrary to Nu\\~nez case, we assume that the dynamos are kinematic, and the velocity flow gradient is decomposed into expansion, shear and twist. The effective twist vanishes by considering that the frame vorticity coincides with Ricci rotation coefficients. Eigenvalues are here Lyapunov exponents. In analogy to GR, where curvature plays the role of gravity, here Ricci curvature seems to play the role of diffusion.

Garcia de Andrade

2009-05-10T23:59:59.000Z

156

Application Study of the Pump Water Flow Station for Building Energy Consumption Monitoring and Control Optimization  

E-Print Network (OSTI)

This paper presents a new building energy monitoring and pump speed control method. The pump speed is controlled to maintain the system resistance at an optimized value to approach the best pump efficiency and save pump power. The system resistance can be obtained by the pump head and the water flow rate calculated by the pump water-flow station (PWS), which was recently developed. The PWS measures the water flow rate using the pump head, pump speed, and pump performance curve. This method has been experimentally proved in real HVAC systems. A case study was demonstrated in this paper for application of this new method in a Continuous Commissioning (CC) practice. The case study shows that the PWS can control the pump speed to maintain the optimized system operating point. It can also measure the water flow rate and monitor energy consumption continuously with low installation and almost no maintenance cost. The results show that the new technology can save pump power and increase pump efficiency significantly.

Liu, G.; Liu, M.

2006-01-01T23:59:59.000Z

157

Collective flows of light particles in the Au+Au collision at intermediate energies  

E-Print Network (OSTI)

The Skyrme potential energy density functional is introduced into the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) model and the updated version is applied to studying the directed and elliptic flows of light particles (protons, neutrons, deuterons, tritons, $^3$He and $^4$He) in $^{197}$Au+$^{197}$Au collisions at beam energies 150, 250 and 400 MeV/nucleon. The results are compared with the recent FOPI experimental data. It is found that the yields and collective flows of light particles can be described quite well. The influence of the equation of state (EoS), medium-modified nucleon-nucleon elastic cross sections (NNECS) and cluster recognition criteria on the directed and elliptic flows is studied in detail. It is found that the flows of light particles are sensitive to the medium-modified NNECS, but not sensitive to the isospin dependent cluster recognition criteria. It seems difficult, however, even with the new data and calculations, to obtain a more accurate constraint on the nuclear incompressibility $K_0$ than the interval 200-260 MeV.

Yongjia Wang; Chenchen Guo; Qingfeng Li; Hongfei Zhang; Zhuxia Li; W. Trautmann

2013-05-21T23:59:59.000Z

158

Modeling of material and energy flow in an EBCHR casting system  

Science Conference Proceedings (OSTI)

A numerical and experimental analysis is made of fluid flow and heat transfer in a continuous casting system with an electron-beam energy source. For a cylindrical ingot confined in a water-cooled crucible, a two-dimensional, steady-state model is developed which includes the effects of free convection in the pool and conduction in the two-phase and solid regions. A modified Galerkin finite element method is used to solve for the flow and temperature fields simultaneously with the upper and lower boundaries of the pool. The calculation grid deforms along vertical spines as these phase boundaries move. Heat flows are measured in a steady-state experiment involving a short ingot and no pouring. Heat transfer coefficients representing contact resistance are determined, and measured heat flows are compared with model values. Flow and temperature fields along with solidification-zone boundaries are calculated for the experimental case and a case in which the ingot cooling is improved.

Westerberg, K.W. [Aspen Technology, Inc., Cambridge, MA (United States); McClelland, M.A. [Lawrence Livermore National Lab., CA (United States)

1994-11-01T23:59:59.000Z

159

Trace species emissions for IGFC  

SciTech Connect

The objectives of this investigation are to study both the fate and distribution of at least five significant, coal-derived trace elements commonly present in coal-gas, in terms of their vaporization during gasification, their condensation and sorption during hot-gas cleanup, as well as their effects on fuel cells, gas turbines, and ultimately the environment. The definition here of trace does not include the major contaminants of sulfur and chlorine, etc., although the simultaneous presence of such major species is always considered in our thermochemical calculations. Of course, many other elements can vaporize in trace quantities from raw coal as either volatile, molecular compounds or as metallic vapors which, besides their deleterious action on the energy conversion systems, can also be detrimental to plant and animal life when emitted into the atmosphere. Hence, an understanding is sought of how the type and quantity of significant trace species in coal-gas changes from the coal pile through cleanup subsystems and the electric generators to the exhaust stack of an integrated system.

Pigeaud, A.E.; Helble, J.J.

1994-10-01T23:59:59.000Z

160

Ultrabroadband nonreciprocal transverse energy flow of light in linear passive photonic circuits  

E-Print Network (OSTI)

Using a technique, analogous to coherent population trapping in an atomic system, we propose schemes to create transverse light propagation violating left-right symmetry in a photonic circuit consisting of three coupled waveguides. The frequency windows for the symmetry breaking of the left-right energy flow span over 80 nm. Our proposed system only uses linear passive optical materials and is easy to integrate on a chip.

Keyu Xia; M. Alamri; M. Suhail Zubairy

2013-03-25T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Introduction to Traces - CECM  

E-Print Network (OSTI)

Nov 19, 1997 ... Section 2 describes patterns that arise in the construction of truth tables for traces and their theoretical interest for the completeness problem.

162

Energy policy act transportation study: Interim report on natural gas flows and rates  

Science Conference Proceedings (OSTI)

This report, Energy Policy Act Transportation Study: Interim Report on Natural Gas Flows and Rates, is the second in a series mandated by Title XIII, Section 1340, ``Establishment of Data Base and Study of Transportation Rates,`` of the Energy Policy Act of 1992 (P.L. 102--486). The first report Energy Policy Act Transportation Study: Availability of Data and Studies, was submitted to Congress in October 1993; it summarized data and studies that could be used to address the impact of legislative and regulatory actions on natural gas transportation rates and flow patterns. The current report presents an interim analysis of natural gas transportation rates and distribution patterns for the period from 1988 through 1994. A third and final report addressing the transportation rates and flows through 1997 is due to Congress in October 2000. This analysis relies on currently available data; no new data collection effort was undertaken. The need for the collection of additional data on transportation rates will be further addressed after this report, in consultation with the Congress, industry representatives, and in other public forums.

NONE

1995-11-17T23:59:59.000Z

163

Addressing the efficiency of the energy transfer to the water flow by underwater electrical wire explosion  

SciTech Connect

Experimental and hydrodynamic simulation results of submicrosecond time scale underwater electrical explosions of planar Cu and Al wire arrays are presented. A pulsed low-inductance generator having a current amplitude of up to 380 kA was used. The maximum current rise rate and maximum power achieved during wire array explosions were dI/dt<=830 A/ns and approx10 GW, respectively. Interaction of the water flow generated during wire array explosion with the target was used to estimate the efficiency of the transfer of the energy initially stored in the generator energy to the water flow. It was shown that efficiency is in the range of 18%-24%. In addition, it was revealed that electrical explosion of the Al wire array allows almost double the energy to be transferred to the water flow due to efficient combustion of the Al wires. The latter allows one to expect a significant increase in the pressure at the front of converging strong shock waves in the case of cylindrical Al wire array underwater explosion.

Efimov, S.; Gurovich, V. Tz.; Bazalitski, G.; Fedotov, A.; Krasik, Ya. E. [Physics Department, Technion, Haifa 32000 (Israel)

2009-10-01T23:59:59.000Z

164

Disk Accretion Flow Driven by Large-Scale Magnetic Fields: Solutions with Constant Specific Energy  

E-Print Network (OSTI)

(Abridged) We study the dynamical evolution of a stationary, axisymmetric, and perfectly conducting cold accretion disk containing a large-scale magnetic field around a Kerr black hole, trying to understand the relation between accretion and the transportation of angular momentum and energy. We solve the radial momentum equation for solutions corresponding to an accretion flow that starts from a subsonic state at infinity, smoothly passes the fast critical point, then supersonically falls into the horizon of the black hole. The solutions always have the following features: 1) The specific energy of fluid particles remains constant but the specific angular momentum is effectively removed by the magnetic field. 2) At large radii, where the disk motion is dominantly rotational, the energy density of the magnetic field is equipartitioned with the rotational energy density of the disk. 3) Inside the fast critical point, where radial motion becomes important, the ratio of the electromagnetic energy density to the kinetic energy density drops quickly. The results indicate that: 1) Disk accretion does not necessarily imply energy dissipation since magnetic fields do not have to transport or dissipate a lot of energy as they effectively transport angular momentum. 2) When resistivity is small, the large-scale magnetic field is amplified by the shearing rotation of the disk until the magnetic energy density is equipartitioned with the rotational energy density, ending up with a geometrically thick disk. This is in contrast with the evolution of small-scale magnetic fields where if the resistivity is nonzero the magnetic energy density is likely to be equipartitioned with the kinetic energy density associated with local random motions (e.g., turbulence), making a thin Keplerian disk possible.

Li-Xin Li

2002-12-20T23:59:59.000Z

165

Problem Set # 5 1. In a stratified flow the energy containing eddies have a time scale of N-1  

E-Print Network (OSTI)

Problem Set # 5 1. In a stratified flow the energy containing eddies have a time scale of N-1 . (a , .1 o T C z m , (b) calculate the characteristic velocity of the energy containing eddies. (c is the turbulent kinetic energy per unit mass 23 2 E u , u, the characteristic turbulent velocity, the turbulent

Goodman, Louis

166

GPU ray tracing  

Science Conference Proceedings (OSTI)

The NVIDIA OptiX ray tracing engine is a programmable system designed for NVIDIA GPUs and other highly parallel architectures. The OptiX engine builds on the key observation that most ray tracing algorithms can be implemented using a small ...

Steven G. Parker; Heiko Friedrich; David Luebke; Keith Morley; James Bigler; Jared Hoberock; David McAllister; Austin Robison; Andreas Dietrich; Greg Humphreys; Morgan McGuire; Martin Stich

2013-05-01T23:59:59.000Z

167

Ray tracing visualization toolkit  

Science Conference Proceedings (OSTI)

The Ray Tracing Visualization Toolkit (rtVTK) is a collection of programming and visualization tools supporting visual analysis of ray-based rendering algorithms. rtVTK leverages layered visualization within the spatial domain of computation, enabling ... Keywords: ray tracing, ray-based rendering, visualization

Christiaan Gribble; Jeremy Fisher; Daniel Eby; Ed Quigley; Gideon Ludwig

2012-03-01T23:59:59.000Z

168

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

E-Print Network (OSTI)

Amarnath, M. Blatt, Variable refrigerant flow: where, why,simulation in the variable refrigerant flow air-conditioningsimulation of the variable refrigerant flow air conditioning

Hong, Tainzhen

2010-01-01T23:59:59.000Z

169

Common Patterns of Energy Flow and Biomass Distribution on Weighted Food Webs  

E-Print Network (OSTI)

Weights of edges and nodes on food webs which are available from the empirical data hide much information about energy flows and biomass distributions in ecosystem. We define a set of variables related to weights for each species $i$, including the throughflow $T_i$, the total biomass $X_i$, and the dissipated flow $D_i$ (output to the environment) to uncover the following common patterns in 19 empirical weighted food webs: (1) DGBD distributions (Discrete version of a Generalized Beta Distribution), a kind of deformed Zipf's law, of energy flow and storage biomass; (2) The allometric scaling law $T_i\\propto X_i^{\\alpha}$, which can be viewed as the counterpart of the Kleiber's 3/4 law at the population level; (3) The dissipation law $D_i\\propto T_i^{\\beta}$; and (4) The gravity law, including univariate version $f_{ij}\\propto (T_iT_j)^{\\gamma}$ and bivariate approvement $f_{ij}\\propto T_i^{\\gamma_1}T_j^{\\gamma_2}$. These patterns are very common and significant in all collected webs, as a result, some remark...

Zhang, Jiang

2012-01-01T23:59:59.000Z

170

Effect of Electro-Osmotic Flow on Energy Conversion on Superhydrophobic Surfaces  

E-Print Network (OSTI)

It has been suggested that superhydrophobic surfaces, due to the presence of a no-shear zone, can greatly enhance transport of surface charges, leading to a considerable increase in the streaming potential. This could find potential use in micro-energy harvesting devices. In this paper, we show using analytical and numerical methods, that when a streaming potential is generated in such superhydrophobic geometries, the reverse electro-osmotic flow and hence current generated by this, is significant. A decrease in streaming potential compared to what was earlier predicted is expected. We also show that, due to the electro-osmotic streaming-current, a saturation in both the power extracted and efficiency of energy conversion is achieved in such systems for large values of the free surface charge densities. Nevertheless, under realistic conditions, such microstructured devices with superhydrophobic surfaces have the potential to even reach energy conversion efficiencies only achieved in nanostructured devices so ...

Seshadri, Gowrishankar

2013-01-01T23:59:59.000Z

171

An Analysis of the Kinetic Energy Budget for Two Extratropical Cyclones: The Vertically Averaged Flow and the Vertical Shear Flow  

Science Conference Proceedings (OSTI)

An analysis of the kinetic energy budget is made for two intensely developing cyclones over North America. The principal kinetic energy source for the first cyclone is the net horizontal transport of kinetic energy across the boundaries of the ...

Jordan C. Alpert

1981-06-01T23:59:59.000Z

172

Energy Simulation of Integrated Multiple-Zone Variable Refrigerant Flow System  

Science Conference Proceedings (OSTI)

We developed a detailed steady-state system model, to simulate the performance of an integrated five-zone variable refrigerant flow (VRF)heat pump system. The system is multi-functional, capable of space cooling, space heating, combined space cooling and water heating, and dedicated water heating. Methods were developed to map the VRF performance in each mode, based on the abundant data produced by the equipment system model. The performance maps were used in TRNSYS annual energy simulations. Using TRNSYS, we have successfully setup and run cases for a multiple-split, VRF heat pump and dehumidifier combination in 5-zone houses in 5 climates that control indoor dry-bulb temperature and relative humidity. We compared the calculated energy consumptions for the VRF heat pump against that of a baseline central air source heat pump, coupled with electric water heating and the standalone dehumidifiers. In addition, we investigated multiple control scenarios for the VRF heat pump, i.e. on/off control, variable indoor air flow rate, and using different zone temperature setting schedules, etc. The energy savings for the multiple scenarios were assessed.

Shen, Bo [ORNL; Rice, C Keith [ORNL; Baxter, Van D [ORNL

2013-01-01T23:59:59.000Z

173

Steam Tracing...New Technologies for the 21st Century  

E-Print Network (OSTI)

For decades, steam tracing has been an accepted practice in the heating of piping, vessels, and equipment. This paper presents recent product innovations such as "burn-safe" and "energy efficient" steam tracing products. For the many applications where steam tracing is applied for simple freeze protection, recently developed products which reduce the heat transfer rate and thus the energy consumption of steam tracers will be discussed. This paper will provide several steam tracing examples that will exhibit the use of experimental data, mathematical analysis, and FEA/CFD numerical simulation techniques.

Pitzer, R. K.; Barth, R. E.; Bonorden, C.

1999-05-01T23:59:59.000Z

174

Sensor Data Trace Communication  

This is a method and process for detecting, locating and quantifying physical phenomena using a data trace that may be incorporated and/or installed on structures including oil and gas pipes and bridges, buildings, etc.

175

Trace metal particulates in coal-fired power plant emissions.  

E-Print Network (OSTI)

??Since coal-fired power plants produce approximately 50% of U.S. energy, the toxic and environmental damaging effects of this energy source are important. Trace metals are (more)

Marett, Lanette Simone

2007-01-01T23:59:59.000Z

176

Tracing Noble Gas Radionuclides in the Environment  

E-Print Network (OSTI)

Trace analysis of radionuclides is an essential and versatile tool in modern science and technology. Due to their ideal geophysical and geochemical properties, long-lived noble gas radionuclides, in particular, 39Ar (t1/2 = 269 yr), 81Kr (t1/2 = 2.3x10^5 yr) and 85Kr (t1/2 = 10.8 yr), have long been recognized to have a wide range of important applications in Earth sciences. In recent years, significant progress has been made in the development of practical analytical methods, and has led to applications of these isotopes in the hydrosphere (tracing the flow of groundwater and ocean water). In this article, we introduce the applications of these isotopes and review three leading analytical methods: Low-Level Counting (LLC), Accelerator Mass Spectrometry (AMS) and Atom Trap Trace Analysis (ATTA).

P. Collon; W. Kutschera; Z. -T. Lu

2004-02-11T23:59:59.000Z

177

MATERIAL-FLOW DATA STRUCTURES AS A BASIS FOR ENERGY INFORMATION SYSTEM DESIGN  

E-Print Network (OSTI)

materials, petroleum products, are traced from their sourcepetroleum model:(a)- Storage; (b)- Transportation; (c)- Source; (petroleum products, volume of oil (or product) storage and voltme in transit, geographic source

Krishnan, V.V.

2013-01-01T23:59:59.000Z

178

Flow Test At Snake River Plain Region (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

Flow Test At Snake River Plain Region (DOE GTP) Exploration Activity Details Location Snake River Plain Geothermal Region Exploration Technique Flow Test Activity Date Usefulness...

179

Flow Test At Fort Bliss Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Fort Bliss Area (DOE GTP) Exploration Activity Details Location Fort Bliss Area Exploration Technique Flow Test Activity Date Usefulness not indicated DOE-funding...

180

Flow Test At Glass Buttes Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Glass Buttes Area (DOE GTP) Exploration Activity Details Location Glass Buttes Area Exploration Technique Flow Test Activity Date Usefulness not indicated DOE-funding...

Note: This page contains sample records for the topic "traces energy flows" 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

Flow Test At The Needles Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At The Needles Area (DOE GTP) Exploration Activity Details Location The Needles Area Exploration Technique Flow Test Activity Date Usefulness not indicated DOE-funding...

182

Flow Test At Mccoy Geothermal Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Mccoy Geothermal Area (DOE GTP) Exploration Activity Details Location Mccoy Geothermal Area Exploration Technique Flow Test Activity Date Usefulness not indicated...

183

Flow Test At Gabbs Valley Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Gabbs Valley Area (DOE GTP) Exploration Activity Details Location Gabbs Valley Area Exploration Technique Flow Test Activity Date Usefulness not indicated DOE-funding...

184

Compare Energy Use in Variable Refrigerant Flow Heat Pumps Field Demonstration and Computer Model  

SciTech Connect

Variable Refrigerant Flow (VRF) heat pumps are often regarded as energy efficient air-conditioning systems which offer electricity savings as well as reduction in peak electric demand while providing improved individual zone setpoint control. One of the key advantages of VRF systems is minimal duct losses which provide significant reduction in energy use and duct space. However, there is limited data available to show their actual performance in the field. Since VRF systems are increasingly gaining market share in the US, it is highly desirable to have more actual field performance data of these systems. An effort was made in this direction to monitor VRF system performance over an extended period of time in a US national lab test facility. Due to increasing demand by the energy modeling community, an empirical model to simulate VRF systems was implemented in the building simulation program EnergyPlus. This paper presents the comparison of energy consumption as measured in the national lab and as predicted by the program. For increased accuracy in the comparison, a customized weather file was created by using measured outdoor temperature and relative humidity at the test facility. Other inputs to the model included building construction, VRF system model based on lab measured performance, occupancy of the building, lighting/plug loads, and thermostat set-points etc. Infiltration model inputs were adjusted in the beginning to tune the computer model and then subsequent field measurements were compared to the simulation results. Differences between the computer model results and actual field measurements are discussed. The computer generated VRF performance closely resembled the field measurements.

Sharma, Chandan; Raustad, Richard

2013-06-01T23:59:59.000Z

185

An Energy Signature Scheme for Steam Trap Assessment and Flow Rate Estimation Using Pipe-Induced Acoustic Measurements  

SciTech Connect

The US Congress has passed legislation dictating that all government agencies establish a plan and process for improving energy efficiencies at their sites. In response to this legislation, Oak Ridge National Laboratory (ORNL) has recently conducted a pilot study to explore the deployment of a wireless sensor system for a real-time measurement-based energy efficiency optimization framework within the steam distribution system within the ORNL campus. We make assessments on the real-time status of the distribution system by observing the state measurements of acoustic sensors mounted on the steam pipes/traps/valves. In this paper, we describe a spectral-based energy signature scheme that interprets acoustic vibration sensor data to estimate steam flow rates and assess steam traps health status. Experimental results show that the energy signature scheme has the potential to identify different steam trap health status and it has sufficient sensitivity to estimate steam flow rate. Moreover, results indicate a nearly quadratic relationship over the test region between the overall energy signature factor and flow rate in the pipe. The analysis based on estimated steam flow and steam trap status helps generate alerts that enable operators and maintenance personnel to take remedial action. The goal is to achieve significant energy-saving in steam lines by monitoring and acting on leaking steam pipes/traps/valves.

Olama, Mohammed M [ORNL; Allgood, Glenn O [ORNL; Kuruganti, Phani Teja [ORNL; Lake, Joe E [ORNL

2012-01-01T23:59:59.000Z

186

Unsteady flow volumes  

SciTech Connect

Flow volumes are extended for use in unsteady (time-dependent) flows. The resulting unsteady flow volumes are the 3 dimensional analog of streamlines. There are few examples where methods other than particle tracing have been used to visualize time varying flows. Since particle paths can become convoluted in time there are additional considerations to be made when extending any visualization technique to unsteady flows. We will present some solutions to the problems which occur in subdivision, rendering, and system design. We will apply the unsteady flow volumes to a variety of field types including moving multi-zoned curvilinear grids.

Becker, B.G.; Lane, D.A.; Max, N.L.

1995-03-01T23:59:59.000Z

187

Urban Sewage Delivery Heat Transfer System (1): Flow Resistance and Energy Analysis  

E-Print Network (OSTI)

The thimble delivery heat-transfer (TDHT) system is one of the primary modes to utilize the energy of urban sewage. Given the schematic diagram of TDHT system, introducing the definition of equivalent fouling roughness height, and using the Niklaus semi-rational resistance coefficient formula in rough region, the calculation methods of the sewage flow resistance are explained. Through the resistance contrastive analysis of sewage and pure mediate water, the results indicate that the mediate water sub-system is the primary design point of the TDHT system. The economical ratio of flux and velocity is determined by optimization analysis of investment and operating cost in the technical feasible range. The paper will provide reference for pipe design and pump selection of urban sewage cool or heat source applied delivery heat transfer methods.

Zhang, C.; Wu, R.; Li, G.; Li, X.; Huang, L.; Sun, D.

2006-01-01T23:59:59.000Z

188

ESS 2012 Peer Review - Hydrogen-Bromine Flow Batteries for Grid-Scale Energy Storage - Vincent Battaglia, LBNL  

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

H H 2 /Br 2 Flow Battery for Grid-Scale Energy Storage Venkat Srinivasan, Adam Weber, & Vince Battaglia Lawrence Berkeley National Laboratory * DOE ESS Review * Washington, DC * September 26, 2012 vsbattaglia@lbl.gov Purpose Develop a low-cost, energy-storage system with high power density at 80% efficiency Use H 2 and Br 2 in a flow battery Future Plans Modeling Funding from ARPA-E GRIDS, USDOE LBNL: Kyu Taek Cho (Cell studies); Paul Ridgway (Catalysis studies); Sophia Haussener (Transport modeling) Bosch: Paul Albertus (Cost Modeling); Roel Sanchez-Carrera and Boris Kozinsky (Catalyst theory)

189

Preliminary Analysis of Grande Ronde Basalt Formation Flow Top Transmissivity as it Relates to Assessment and Site Selection Applications for Fluid/Energy Storage and Sequestration Projects  

SciTech Connect

Preliminary Analysis of Grande Ronde Basalt Formation Flow Top Transmissivity as it Relates to Assessment and Site Selection Applications for Fluid/Energy Storage and Sequestration Projects

Spane, Frank A.

2013-04-29T23:59:59.000Z

190

Semi-Solid Flowable Battery Electrodes: Semi-Solid Flow Cells for Automotive and Grid-Level Energy Storage  

DOE Green Energy (OSTI)

BEEST Project: Scientists at 24M are crossing a Li-Ion battery with a fuel cell to develop a semi-solid flow battery. This system relies on some of the same basic chemistry as a standard Li-Ion battery, but in a flow battery the energy storage material is held in external tanks, so storage capacity is not limited by the size of the battery itself. The design makes it easier to add storage capacity by simply increasing the size of the tanks and adding more paste. In addition, 24M's design also is able to extract more energy from the semi-solid paste than conventional Li-Ion batteries. This creates a cost-effective, energy-dense battery that can improve the driving range of EVs or be used to store energy on the electric grid.

2010-09-01T23:59:59.000Z

191

Semi-Solid Flowable Battery Electrodes: Semi-Solid Flow Cells for Automotive and Grid-Level Energy Storage  

SciTech Connect

BEEST Project: Scientists at 24M are crossing a Li-Ion battery with a fuel cell to develop a semi-solid flow battery. This system relies on some of the same basic chemistry as a standard Li-Ion battery, but in a flow battery the energy storage material is held in external tanks, so storage capacity is not limited by the size of the battery itself. The design makes it easier to add storage capacity by simply increasing the size of the tanks and adding more paste. In addition, 24M's design also is able to extract more energy from the semi-solid paste than conventional Li-Ion batteries. This creates a cost-effective, energy-dense battery that can improve the driving range of EVs or be used to store energy on the electric grid.

2010-09-01T23:59:59.000Z

192

Lawrence Livermore Laboratory geothermal energy program. A status report on the development of the Total-Flow concept  

DOE Green Energy (OSTI)

The technology development activities of the Geothermal Energy Program at the Lawrence Livermore Laboratory are summarized. Significant progress toward development of the Total-Flow concept was made during FY 1978. The results show that the original goal of 70% engine efficiency for the Total-Flow impulse turbine is achievable, that a Total-Flow system is competitive economically with conventional systems, and that the Total-Flow concept offers the benefit of more efficient utilization of geothermal resources for electric power production. The evaluation of several liquid expanders designed for low-temperature (including geopressured) resources suggests that if development were continued, these expanders could be used in combination with conventional systems to increase overall system efficiency. Although the program was terminated before complete field testing of prototype systems could be carried out, the concepts have been adopted in other countries (Japan and Mexico), where development is continuing.

Austin, A.L.; Lundberg, A.W.

1978-10-02T23:59:59.000Z

193

Relics of Minijets amid Anisotropic Flows in High-energy Heavy-ion Collisions  

E-Print Network (OSTI)

Two dimensional low-$p_T$ dihadron correlations in azimuthal angle $\\phi$ and pseudo-rapidity $\\eta$ in high-energy heavy-ion collisions are investigated within both the HIJING Monte Carlo model and an event-by-event (3+1)D ideal hydrodynamic model. Without final-state interaction and collective expansion, dihadron correlations from HIJING simulations have a typical structure from minijets that contains a near-side two-dimensional peak and an away-side ridge along the $\\eta$-direction. In contrast, event-by-event (3+1)D ideal hydrodynamic simulations with fluctuating initial conditions from the HIJING+AMPT model produce a strong dihadron correlation that has an away-side as well as a near-side ridge. Relics of intrinsic dihadron correlation from minijets in the initial conditions still remain as superimposed on the two ridges. By varying initial conditions from HIJING+AMPT, we study effects of minijets, non-vanishing initial flow and longitudinal fluctuation on the final state dihadron correlations. With a large rapidity gap, one can exclude near-side correlations from minijet relics and dihadron correlations can be described by the superposition of harmonic flows up to the 6th order. When long-range correlations with a large rapidity gap are subtracted from short-range correlations with a small rapidity gap, the remaining near-side dihadron correlations result solely from relics of minijets. Low transverse momentum hadron yields per trigger ($p_T^{\\rm trig} <4$ GeV/$c$, $p_T^{\\rm asso}<2$ GeV/$c$) in central heavy-ion collisions are significantly enhanced over that in p+p collisions while widths in azimuthal angle remain the same, in qualitative agreement with experimental data.

Longgang Pang; Qun Wang; Xin-Nian Wang

2013-09-26T23:59:59.000Z

194

Fuel Cell with Metal Screen Flow-Field - Energy Innovation Portal  

The invention provides a simpler and more effective reactant and cooling flow distribution in biopolar plate fuel cells.

195

CGC Trace Species Partitioning  

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

Trace Species Partitioning as Affected Trace Species Partitioning as Affected by Cold Gas Cleanup Conditions: A Thermodynamic Analysis February 10, 2011 DOE/NETL-2011/1503 T r ace Species P ar titioning at C old G as C leanup C onditions Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name,

196

ESS 2012 Peer Review - Iron Based Flow Batteries for Low Cost Grid Level Energy Storage - Jesse Wainright, Case Western Reserve  

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

authors gratefully acknowledge the support of the Department of Energy/Office of Electricity's Energy Storage Program. authors gratefully acknowledge the support of the Department of Energy/Office of Electricity's Energy Storage Program. Iron Based Flow Batteries for Low Cost Grid Level Energy Storage J.S. Wainright, R. F. Savinell, P.I.s Dept. of Chemical Engineering, Case Western Reserve University Purpose Impact on Iron Based Batteries on the DOE OE Energy Storage Mission Recent Results Recent Results Develop efficient, cost-effective grid level storage capability based on iron. Goals of this Effort: * Minimize Cost/Watt by increasing current density - Hardware Cost >> Electrolyte Cost * Minimize Cost/Whr by increasing plating capacity * Maximize Efficiency by minimizing current lost to hydrogen evolution Electrochemistry of the all-Iron system:

197

Measurement of Trace Uranium Isotopes  

Science Conference Proceedings (OSTI)

The extent to which thermal ionization mass spectrometry (TIMS) can measure trace quantities of 233U and 236U in the presence of a huge excess of natural uranium is evaluated. This is an important nuclear non-proliferation measurement. Four ion production methods were evaluated with three mass spectrometer combinations. The most favorable combinations are not limited by abundance sensitivity; rather, the limitations are the ability to generate a uranium ion beam of sufficient intensity to obtain the required number of counts on the minor isotopes in relationship to detector background. The most favorable situations can measure isotope ratios in the range of E10 if sufficient sample intensity is available. These are the triple sector mass spectrometer with porous ion emitters (PIE) and the single sector mass spectrometer with energy filtering.

Matthew G. Watrous; James E. Delmore

2011-05-01T23:59:59.000Z

198

Simulating atmosphere flow for wind energy applications with WRF-LES  

SciTech Connect

Forecasts of available wind energy resources at high spatial resolution enable users to site wind turbines in optimal locations, to forecast available resources for integration into power grids, to schedule maintenance on wind energy facilities, and to define design criteria for next-generation turbines. This array of research needs implies that an appropriate forecasting tool must be able to account for mesoscale processes like frontal passages, surface-atmosphere interactions inducing local-scale circulations, and the microscale effects of atmospheric stability such as breaking Kelvin-Helmholtz billows. This range of scales and processes demands a mesoscale model with large-eddy simulation (LES) capabilities which can also account for varying atmospheric stability. Numerical weather prediction models, such as the Weather and Research Forecasting model (WRF), excel at predicting synoptic and mesoscale phenomena. With grid spacings of less than 1 km (as is often required for wind energy applications), however, the limits of WRF's subfilter scale (SFS) turbulence parameterizations are exposed, and fundamental problems arise, associated with modeling the scales of motion between those which LES can represent and those for which large-scale PBL parameterizations apply. To address these issues, we have implemented significant modifications to the ARW core of the Weather Research and Forecasting model, including the Nonlinear Backscatter model with Anisotropy (NBA) SFS model following Kosovic (1997) and an explicit filtering and reconstruction technique to compute the Resolvable Subfilter-Scale (RSFS) stresses (following Chow et al, 2005).We are also modifying WRF's terrain-following coordinate system by implementing an immersed boundary method (IBM) approach to account for the effects of complex terrain. Companion papers presenting idealized simulations with NBA-RSFS-WRF (Mirocha et al.) and IBM-WRF (K. A. Lundquist et al.) are also presented. Observations of flow through the Altamont Pass (Northern California) wind farm are available for validation of the WRF modeling tool for wind energy applications. In this presentation, we use these data to evaluate simulations using the NBA-RSFS-WRF tool in multiple configurations. We vary nesting capabilities, multiple levels of RSFS reconstruction, SFS turbulence models (the new NBA turbulence model versus existing WRF SFS turbulence models) to illustrate the capabilities of the modeling tool and to prioritize recommendations for operational uses. Nested simulations which capture both significant mesoscale processes as well as local-scale stable boundary layer effects are required to effectively predict available wind resources at turbine height.

Lundquist, J K; Mirocha, J D; Chow, F K; Kosovic, B; Lundquist, K A

2008-01-14T23:59:59.000Z

199

Technique for identifying, tracing, or tracking objects in image data  

SciTech Connect

A technique for computer vision uses a polygon contour to trace an object. The technique includes rendering a polygon contour superimposed over a first frame of image data. The polygon contour is iteratively refined to more accurately trace the object within the first frame after each iteration. The refinement includes computing image energies along lengths of contour lines of the polygon contour and adjusting positions of the contour lines based at least in part on the image energies.

Anderson, Robert J. (Albuquerque, NM); Rothganger, Fredrick (Albuquerque, NM)

2012-08-28T23:59:59.000Z

200

Gravitational collapse of a spherical star with heat flow as a possible energy mechanism of gamma-ray bursts  

E-Print Network (OSTI)

We investigate the gravitational collapse of a spherically symmetric, inhomogeneous star, which is described by a perfect fluid with heat flow and satisfies the equation of state $p=\\rho/3$ at its center. In the process of the gravitational collapsing, the energy of the whole star is emitted into space. And the remaining spacetime is a Minkowski one without a remnant at the end of the process. For a star with a solar mass and solar radius, the total energy emitted is at the order of $10^{54}$ {\\rm erg}, and the time-scale of the process is about $8s$. These are in the typical values for a gamma-ray burst. Thus, we suggest the gravitational collapse of a spherical star with heat flow as a possible energy mechanism of gamma-ray bursts.

Zhe Chang; Cheng-Bo Guan; Chao-Guang Huang; Xin Li

2008-03-26T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Flow Test At Raft River Geothermal Area (2008) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Raft River Geothermal Area (2008) Flow Test At Raft River Geothermal Area (2008) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Raft River Geothermal Area (2008) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Flow Test Activity Date 2008 Usefulness not indicated DOE-funding Unknown Exploration Basis To confirm resource using flow tests Notes Both production and injection wells were flow tested. Aslo includes interference testing across the well field. References Glaspey, Douglas J. (30 January 2008) Final Technical Resource Confirmation Testing at the Raft River Geothermal Project, Cassia County, Idaho Retrieved from "http://en.openei.org/w/index.php?title=Flow_Test_At_Raft_River_Geothermal_Area_(2008)&oldid=473856

202

Mitigating the Impacts of Uncontrolled Air Flow on Indoor Environmental Quality and Energy Demand in Non-Residential Buildings  

SciTech Connect

This multi-faceted study evaluated several aspects of uncontrolled air flows in commercial buildings in both Northern and Southern climates. Field data were collected from 25 small commercial buildings in New York State to understand baseline conditions for Northern buildings. Laboratory wall assembly testing was completed at Syracuse University to understand the impact of typical air leakage pathways on heat and moisture transport within wall assemblies for both Northern and Southern building applications. The experimental data from the laboratory tests were used to verify detailed heat and moisture (HAM) simulation models that could be used to evaluate a wider array of building applications and situations. Whole building testing at FSEC's Building Science Laboratory (BSL) systematically evaluated the energy and IAQ impacts of duct leakage with various attic and ceiling configurations. This systematic test carefully controlled all aspects of building performance to quantify the impact of duct leakage and unbalanced flow. The newest features of the EnergyPlus building simulation tool were used to model the combined impacts of duct leakage, ceiling leakage, unbalanced flows, and air conditioner performance. The experimental data provided the basis to validate the simulation model so it could be used to study the impact of duct leakage over a wide range of climates and applications. The overall objective of this project was to transfer work and knowledge that has been done on uncontrolled air flow in non-residential buildings in Florida to a national basis. This objective was implemented by means of four tasks: (1) Field testing and monitoring of uncontrolled air flow in a sample of New York buildings; (2) Detailed wall assembly laboratory measurements and modeling; (3) Whole building experiments and simulation of uncontrolled air flows; and (4) Develop and implement training on uncontrolled air flows for Practitioners in New York State.

Hugh I. Henderson; Jensen Zhang; James B. Cummings; Terry Brennan

2006-07-31T23:59:59.000Z

203

Mitigating the Impacts of Uncontrolled Air Flow on Indoor Environmental Quality and Energy Demand in Non-Residential Buildings  

SciTech Connect

This multi-faceted study evaluated several aspects of uncontrolled air flows in commercial buildings in both Northern and Southern climates. Field data were collected from 25 small commercial buildings in New York State to understand baseline conditions for Northern buildings. Laboratory wall assembly testing was completed at Syracuse University to understand the impact of typical air leakage pathways on heat and moisture transport within wall assemblies for both Northern and Southern building applications. The experimental data from the laboratory tests were used to verify detailed heat and moisture (HAM) simulation models that could be used to evaluate a wider array of building applications and situations. Whole building testing at FSEC's Building Science Laboratory (BSL) systematically evaluated the energy and IAQ impacts of duct leakage with various attic and ceiling configurations. This systematic test carefully controlled all aspects of building performance to quantify the impact of duct leakage and unbalanced flow. The newest features of the EnergyPlus building simulation tool were used to model the combined impacts of duct leakage, ceiling leakage, unbalanced flows, and air conditioner performance. The experimental data provided the basis to validate the simulation model so it could be used to study the impact of duct leakage over a wide range of climates and applications. The overall objective of this project was to transfer work and knowledge that has been done on uncontrolled air flow in non-residential buildings in Florida to a national basis. This objective was implemented by means of four tasks: (1) Field testing and monitoring of uncontrolled air flow in a sample of New York buildings; (2) Detailed wall assembly laboratory measurements and modeling; (3) Whole building experiments and simulation of uncontrolled air flows; and (4) Develop and implement training on uncontrolled air flows for Practitioners in New York State.

Hugh I. Henderson; Jensen Zhang; James B. Cummings; Terry Brennan

2006-07-31T23:59:59.000Z

204

Energy dependence of directed flow over a wide range of pseudorapidity in Au+Au collisions at RHIC  

E-Print Network (OSTI)

We report on measurements of directed flow as a function of pseudorapidity in Au+Au collisions at energies of $\\sqrt{s_{_{NN}}} =$ 19.6, 62.4, 130 and 200 GeV as measured by the PHOBOS detector at the Relativistic Heavy Ion Collider (RHIC). These results are particularly valuable because of the extensive, continuous pseudorapidity coverage of the PHOBOS detector. There is no significant indication of structure near midrapidity and the data surprisingly exhibit extended longitudinal scaling similar to that seen for elliptic flow and charged particle pseudorapidity density.

B. B. Back; for the PHOBOS Collaboration

2005-11-22T23:59:59.000Z

205

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

206

Flexible reference trace reduction for VM simulations  

Science Conference Proceedings (OSTI)

The unmanageably large size of reference traces has spurred the development of sophisticated trace reduction techniques. In this article we present two new algorithms for trace reduction: Safely Allowed Drop (SAD) and Optimal LRU Reduction ... Keywords: cache hierarchies, locality, reference traces, trace compression, trace reduction

Scott F. Kaplan; Yannis Smaragdakis; Paul R. Wilson

2003-01-01T23:59:59.000Z

207

Flow Test At Lake City Hot Springs Area (Benoit Et Al., 2005) | Open Energy  

Open Energy Info (EERE)

Flow Test At Lake City Hot Springs Area (Benoit Et Al., 2005) Flow Test At Lake City Hot Springs Area (Benoit Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Lake City Hot Springs Area (Benoit Et Al., 2005) Exploration Activity Details Location Lake City Hot Springs Area Exploration Technique Flow Test Activity Date Usefulness useful DOE-funding Unknown Notes Core holes enabled injection and flow testing up to 70 gpm. References Dick Benoit, Joe Moore, Colin Goranson, David Blackwell (2005) Core Hole Drilling And Testing At The Lake City, California Geothermal Field Retrieved from "http://en.openei.org/w/index.php?title=Flow_Test_At_Lake_City_Hot_Springs_Area_(Benoit_Et_Al.,_2005)&oldid=386872" Category: Exploration Activities What links here Related changes

208

Beam Energy Dependence of Directed and Elliptic Flow Measurement from the STAR Experiment  

E-Print Network (OSTI)

Measurements of anisotropic flow in heavy-ion collisions provide insight into the early stage of the system's evolution. This proceedings presents directed and elliptic flow for Au+Au collisions at 39, 11.5 and 7.7 GeV, and for Cu+Cu at 22.4 GeV, measured in the STAR Experiment at RHIC. Differential measurements of directed and elliptic flow of charged particles as a function of centrality, transverse momentum and pseudorapidity are discussed.

Yadav Pandit

2011-09-13T23:59:59.000Z

209

Bi-Annual Report 2010-2011: Shaping pulse flows to meet environmental and energy objectives  

Science Conference Proceedings (OSTI)

This report describes a bioenergetic model developed to allocate seasonal pulse flows to benefit salmon growth. The model links flow with floodplain inundation and production of invertebrate prey eaten by juvenile Chinook salmon. A unique quantile modeling approach is used to describe temporal variation among juvenile salmon spawned at different times. Preliminary model outputs are presented and future plans to optimize flows both to maximize salmon growth and hydropower production are outlined.

Jager, Yetta [ORNL

2010-10-01T23:59:59.000Z

210

Flow Test At Fish Lake Valley Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Fish Lake Valley Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Fish Lake Valley Area (DOE GTP) Exploration Activity...

211

Flow Test At Black Warrior Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Linked Data Page Edit History Share this page on Facebook icon Twitter icon Flow Test At Black Warrior Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal...

212

A Low-Cost, High-Efficiency Periodic Flow Gas Turbine for Distributed Energy Generation  

SciTech Connect

The proposed effort served as a feasibility study for an innovative, low-cost periodic flow gas turbine capable of realizing efficiencies in the 39-48% range.

Dr. Adam London

2008-06-20T23:59:59.000Z

213

MATERIAL-FLOW DATA STRUCTURES AS A BASIS FOR ENERGY INFORMATION SYSTEM DESIGN  

E-Print Network (OSTI)

we have analyzed the U.S. petroleum supply and distributiongeneralizability. Quantized petroleum flows among restrictedan analysis of the U.S. petroleum supply and distr bution

Krishnan, V.V.

2013-01-01T23:59:59.000Z

214

Energy Policy Act Transportation Study: Interim Report on Natural Gas Flows and Rates  

Reports and Publications (EIA)

This report, summarized data and studies that could be used to address the impact of legislative and regulatory actions on natural gas transportation rates and flow patterns.

Information Center

1995-10-01T23:59:59.000Z

215

Flow Test At Flint Geothermal Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Flint Geothermal Area (DOE GTP) Exploration Activity Details Location Flint...

216

Flow Test At Mcgee Mountain Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Mcgee Mountain Area (DOE GTP) Exploration Activity Details Location Mcgee Mountain...

217

Flow Test At Rye Patch Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Rye Patch Area (DOE GTP) Exploration Activity Details Location Rye Patch Area...

218

Flow Test At Jemez Pueblo Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Jemez Pueblo Area (DOE GTP) Exploration Activity Details Location Jemez Pueblo Area...

219

Flow Test At Silver Peak Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Silver Peak Area (DOE GTP) Exploration Activity Details Location Silver Peak Area...

220

Flow Test At Crump's Hot Springs Area (DOE GTP) | Open Energy...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Crump's Hot Springs Area (DOE GTP) Exploration Activity Details Location Crump's Hot...

Note: This page contains sample records for the topic "traces energy flows" 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

Flow Test At San Emidio Desert Area (DOE GTP) | Open Energy Informatio...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At San Emidio Desert Area (DOE GTP) Exploration Activity Details Location San Emidio...

222

Flow Test At New River Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At New River Area (DOE GTP) Exploration Activity Details Location New River Area...

223

Flow Test At Newberry Caldera Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Newberry Caldera Area (DOE GTP) Exploration Activity Details Location Newberry...

224

Flow Test At Soda Lake Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Soda Lake Area (DOE GTP) Exploration Activity Details Location Soda Lake...

225

Flow Test At Hot Pot Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Pot Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Hot Pot Area (DOE GTP) Exploration Activity Details Location Hot...

226

Sourcebook on the production of electricity from geothermal energy. Draft: Chapter 4, Section 4. 4. Status of the development of the total flow system for electric power production from geothermal energy. [Includes glossary  

DOE Green Energy (OSTI)

Discussion is presented under the following section headings: introduction; characteristics of wellhead fluid; energy conversion concepts (including subsections, the flashed steam system, the total flow concept, and comparison of total flow expanders); brine chemistry effects; a possible total flow system design; and references, bibliography, glossary, and figures. (JGB)

Austin, A.L.; Ryley, D.J.

1978-04-01T23:59:59.000Z

227

Heat flow in the northern Basin and Range province | Open Energy  

Open Energy Info (EERE)

in the northern Basin and Range province in the northern Basin and Range province Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Heat flow in the northern Basin and Range province Abstract The heat flow in the Basin and Range province of northern Nevada is extremely complex. It is a product of superposition of the regional effects of extension and volcanism /intrusion modified by the local conductive effects of thermal refraction (complicated structural settings),variations in radioactive heat production, erosion and sedimentation. In addition to these conductive effects,groundwater flow, both on a local and a regional basis,affects heat-flow measurements. Typical heat -flow values for the Basin and Range province average 85 +/- 10 mWm-2. The higher estimates are

228

Flow Test At Lightning Dock Area (Cunniff & Bowers, 2005) | Open Energy  

Open Energy Info (EERE)

Flow Test At Lightning Dock Area (Cunniff & Bowers, 2005) Flow Test At Lightning Dock Area (Cunniff & Bowers, 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Lightning Dock Area (Cunniff & Bowers, 2005) Exploration Activity Details Location Lightning Dock Area Exploration Technique Flow Test Activity Date Usefulness useful DOE-funding Unknown Notes After the Welaco temperature survey was completed for TG52-7, preparations were completed for a controlled airlift test. This test was completed in the period from 19-20 September 2003 for some 23 hours. The well produced steady state flow of about 320-325 gpm at a wellhead temperature of 126.7degrees C (260degreesF). This production rate is equivalent to about 162,000 pounds per hour, with the production temperature producing usable

229

Flow Test At Long Valley Caldera Area (Farrar, Et Al., 2003) | 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 » Flow Test At Long Valley Caldera Area (Farrar, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Long Valley Caldera Area (Farrar, Et Al., 2003) Exploration Activity Details Location Long Valley Caldera Area Exploration Technique Flow Test Activity Date Usefulness useful DOE-funding Unknown Notes The pressure data collected during a 50-h-long flow test at LVEW in September 2001 are best matched using solutions for a flow system consisting of a steeply dipping fracture with infinite hydraulic conductivity, surrounded by a finite-conductivity rock matrix. At shallow

230

Energy Efficient Process Heating: Managing Air Flow Kevin Carpenter and Kelly Kissock  

E-Print Network (OSTI)

(13) The equations are easily incorporated into spreadsheets or computer programs such as PHAST (US." Energy Matters. U.S. Department of Energy. Summer 2005. U.S. Department of Energy. 2003. "PHAST: Process

Kissock, Kelly

231

Optimal Power Flow of Multiple Energy Carriers(Geidl and Andersson...  

Open Energy Info (EERE)

topics related to ESI Prospects for Nuclear Power(Davis 2012) A Framework for the Optimization of Integrated Energy Systems(Jain and Alleyne 2012) Energy System...

232

Factors influencing trace element composition in human teeth  

SciTech Connect

The authors recently compiled and reviewed the literature published in or after 1978 for 45 major, minor, and trace elements in human teeth as a part of an International Atomic Energy Agency (IAEA) study. The purpose of this paper is to discuss the various factors that influence the concentration levels of certain trace elements in human teeth. The sampling practices and analytical techniques that are applicable for trace element analysis are also discussed. It is also our intention to identify reference range of values, where data permit such conclusions. The scrutiny was designed to identify only the healthy permanent teeth, and values from teeth with fillings, caries, or periodontal diseases were eliminated.

Tandon, L. [Los Alamos National Lab., NM (United States); Iyengar, G.V. [Biomineral Sciences International, Inc., Bethesda, MD (United States)

1997-12-01T23:59:59.000Z

233

Flow Test At Raft River Geothermal Area (2006) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Raft River Geothermal Area (2006) Flow Test At Raft River Geothermal Area (2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Raft River Geothermal Area (2006) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Flow Test Activity Date 2006 Usefulness not indicated DOE-funding Unknown Exploration Basis Determine field hydraulic conductivity using borehole impeller flowmeter data Notes A quantitative evaluation of borehole-impeller flowmeter data leads to estimated field hydraulic conductivity. Data were obtained during an injection test of a geothermal well at the Raft River geothermal test site in Idaho. Both stationary and trolling calibrations of the flowmeter were made in the well. Methods were developed to adjust for variations in hole

234

Flow Test At Raft River Geothermal Area (1979) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Raft River Geothermal Area (1979) Flow Test At Raft River Geothermal Area (1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Raft River Geothermal Area (1979) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Flow Test Activity Date 1979 Usefulness useful DOE-funding Unknown Exploration Basis To allow for the lateral and vertical extrapolation of core and test data and bridged the gap between surface geophysical data and core analyses. Notes Temperature and flowmeter logs provide evidence that these fractures and faults are conduits that conduct hot water to the wells. One of the intermediate depth core holes penetrated a hydrothermally altered zone that includes several fractures producing hot water. This altered production

235

Flow Test At Raft River Geothermal Area (2004) | Open Energy Information  

Open Energy Info (EERE)

Flow Test At Raft River Geothermal Area (2004) Flow Test At Raft River Geothermal Area (2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Raft River Geothermal Area (2004) Exploration Activity Details Location Raft River Geothermal Area Exploration Technique Flow Test Activity Date 2004 Usefulness useful DOE-funding GRED II Notes Geothermal Resource Exploration and Definition Projects Raft River (GRED II): Re-assessment and testing of previously abandoned production wells. The objective of the U.S. Geothermal effort is to re-access the available wellbores, assess their condition, perform extensive testing of the reservoir to determine its productive capacity, and perform a resource utilization assessment. At the time of this paper, all five wells had been

236

MATERIAL-FLOW DATA STRUCTURES AS A BASIS FOR ENERGY INFORMATION SYSTEM DESIGN  

E-Print Network (OSTI)

K PIPELINE 121 W ~ GULF C " EXXON OF " 2/2/79 FIGURE 3.flows gasoline to and from Exxon facilities in New Jersey;of suppliers and customers for Exxon's New Jersey gasoline

Krishnan, V.V.

2013-01-01T23:59:59.000Z

237

MATERIAL-FLOW DATA STRUCTURES AS A BASIS FOR ENERGY INFORMATION SYSTEM DESIGN  

E-Print Network (OSTI)

flows among individual refineries we have only monthly datauntil its con(>umption at the refinery inlet, and the post-from their source at the refinery outlet. Imported oil is

Krishnan, V.V.

2013-01-01T23:59:59.000Z

238

Fictitious domain methods for two-phase flow energy balance computations in nuclear  

E-Print Network (OSTI)

. At lower heat fluxes the void fraction increase is insufficient to change the flow pattern to annular, and P. Mercier, "Experimental investigations on boiling of n-pentane across a horizontal tube bundle

Paris-Sud XI, Université de

239

The Transport of Trace Chemicals by Planetary Waves in the Stratosphere. Part 1: Steady Waves  

Science Conference Proceedings (OSTI)

When dissipation is present a forced planetary wave will interact with the zonal flow in the stratosphere and cause acceleration of the zonal wind, mean-zonal diabatic heating and net transport of trace chemicals. Quasi-geostrophic scaling is ...

Robert J. Kurzeja

1981-12-01T23:59:59.000Z

240

Trace Anomaly in Geometric Discretization  

E-Print Network (OSTI)

I develop the simplest geometric-discretized analogue of two dimensional scalar field theory, which qualitatively reproduces the trace anomaly of the continuous theory. The discrete analogue provides an interpretation of the trace anomaly in terms of a non-trivial transformation of electric-magnetic duality-invariant modes of resistor networks that accommodate both electric and magnetic charge currents.

Czech, B

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Disaggregating regional energy supply/demand and flow data to 173 BEAs in support of export coal analysis. Final report  

SciTech Connect

This report documents the procedures and results of a study sponsored jointly by the US Department of Transportation and the US Department of Energy. The study was conducted to provide, Bureau of Economic Analysis (BEA)-level production/consumption data for energy materials for 1985 and 1990 in support of an analysis of transportation requirements for export coal. Base data for energy forecasts at the regional level were obtained from the Department of Energy, Energy Information Administration. The forecasts selected for this study are described in DOE/EIA's 1980 Annual Report to Congress, and are: 1985 Series, B, medium oil import price ($37.00/barrel); and 1990 Series B, medium oil import price ($41.00/barrel). Each forecast period is extensively described by approximately forty-three statistical tables prepared by EIA and made available to TERA for this study. This report provides sufficient information to enable the transportation analyst to appreciate the procedures employed by TERA to produce the BEA-level energy production/consumption data. The report presents the results of the procedures, abstracts of data tabulations, and various assumptions used for the preparation of the BEA-level data. The end-product of this effort was the BEA to BEA energy commodity flow data by more which serve as direct input to DOT's transportation network model being used for a detailed analysis of export coal transportation.

1981-06-01T23:59:59.000Z

242

A Spectral Stochastic Kinetic Energy Backscatter Scheme and Its Impact on Flow-Dependent Predictability in the ECMWF Ensemble Prediction System  

Science Conference Proceedings (OSTI)

Understanding model error in state-of-the-art numerical weather prediction models and representing its impact on flow-dependent predictability remains a complex and mostly unsolved problem. Here, a spectral stochastic kinetic energy backscatter ...

J. Berner; G. J. Shutts; M. Leutbecher; T. N. Palmer

2009-03-01T23:59:59.000Z

243

Understanding reservoir mechanisms using phase and component streamline tracing  

E-Print Network (OSTI)

Conventionally streamlines are traced using total flux across the grid cell faces. The visualization of total flux streamlines shows the movement of flood, injector-producer relationship, swept area and movement of tracer. But they fail to capture some important signatures of reservoir dynamics, such as dominant phase in flow, appearance and disappearance of phases (e.g. gas), and flow of components like CO2. In the work being presented, we demonstrate the benefits of visualizing phase and component streamlines which are traced using phase and component fluxes respectively. Although the phase and component streamlines are not appropriate for simulation, as they might be discontinuous, they definitely have a lot of useful information about the reservoir processes and recovery mechanisms. In this research, phase and component streamline tracing has been successfully implemented in three-phase and compositional simulation and the additional information obtained using these streamlines have been explored. The power and utility of the phase and component streamlines have been demonstrated using synthetic examples and two field cases. The new formulation of streamline tracing provides additional information about the reservoir drive mechanisms. The phase streamlines capture the dominant phase in flow in different parts of the reservoir and the area swept corresponding to different phases can be identified. Based on these streamlines the appearance and disappearance of phases can be identified. Also these streamlines can be used for optimizing the field recovery processes like water injection and location of infill wells. Using component streamlines the movement of components like CO2 can be traced, so they can be used for optimizing tertiary recovery mechanisms and tracking of tracers. They can also be used to trace CO2 in CO2 sequestration project where the CO2 injection is for long term storage in aquifers or reservoirs. They have also other potential uses towards study of reservoir processes and behavior such as drainage area mapping for different phases, phase rate allocations to reservoir layers, etc.

Kumar, Sarwesh

2008-08-01T23:59:59.000Z

244

Flow Test At Pilgrim Hot Springs Area (DOE GTP) | Open Energy Information  

Open Energy Info (EERE)

Area (DOE GTP) Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Flow Test At Pilgrim Hot Springs Area (DOE GTP) Exploration Activity Details Location Pilgrim Hot Springs Area Exploration Technique Flow Test Activity Date Usefulness not indicated DOE-funding Unknown References (1 January 2011) GTP ARRA Spreadsheet Retrieved from "http://en.openei.org/w/index.php?title=Flow_Test_At_Pilgrim_Hot_Springs_Area_(DOE_GTP)&oldid=402456" Categories: Exploration Activities DOE Funded Activities ARRA Funded Activities What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 1863028959 Varnish cache server

245

Energy and Water Cycles in a High-Latitude, North-Flowing River System  

Science Conference Proceedings (OSTI)

The MacKenzie Global Energy and Water Cycle Experiment (GEWEX) Study, Phase 1, seeks to improve understanding of energy and water cycling in the Mackenzie River basin (MRB) and to initiate and test atmospheric, hydrologic, and coupled models that ...

W. R. Rouse; E. M. Blyth; R. W. Crawford; J. R. Gyakum; J. R. Janowicz; B. Kochtubajda; H. G. Leighton; P. Marsh; L. Martz; A. Pietroniro; H. Ritchie; W. M. Schertzer; E. D. Soulis; R. E. Stewart; G. S. Strong; M. K. Woo

2003-01-01T23:59:59.000Z

246

Atmospheric Moisture Transports from Ocean to Land and Global Energy Flows in Reanalyses  

Science Conference Proceedings (OSTI)

An assessment is made of the global energy and hydrological cycles from eight current atmospheric reanalyses and their depiction of changes over time. A brief evaluation of the water and energy cycles in the latest version of the NCAR climate ...

Kevin E. Trenberth; John T. Fasullo; Jessica Mackaro

2011-09-01T23:59:59.000Z

247

ESPC Overview: Cash Flows, Scenarios, and Associated Diagrams for Energy Savings Performance Contracts  

Science Conference Proceedings (OSTI)

This document is meant to inform state and local decision makers about the process of energy savings performance contracts, and how projected savings and allocated energy-related budgets can be impacted by changes in utility prices.

Tetreault, T.; Regenthal, S.

2011-05-01T23:59:59.000Z

248

Energy- and flux-budget turbulence closure model for stably stratified flows. Part II: the role of internal gravity waves  

E-Print Network (OSTI)

We advance our prior energy- and flux-budget turbulence closure model (Zilitinkevich et al., 2007, 2008) for the stably stratified atmospheric flows and extend it accounting for additional vertical flux of momentum and additional productions of turbulent kinetic energy, turbulent potential energy (TPE) and turbulent flux of potential temperature due to large-scale internal gravity waves (IGW). Main effects of IGW are following: the maximal value of the flux Richardson number (universal constant 0.2-0.25 in the no-IGW regime) becomes strongly variable. In the vertically homogeneous stratification, it increases with increasing wave energy and can even exceed 1. In the heterogeneous stratification, when IGW propagate towards stronger stratification, the maximal flux Richardson number decreases with increasing wave energy, reaches zero and then becomes negative. In other words, the vertical flux of potential temperature becomes counter-gradient. IGW also reduce anisotropy of turbulence and increase the share of TPE in the turbulent total energy. Depending on the direction (downward or upward), IGW either strengthen or weaken the total vertical flux of momentum. Predictions from the proposed model are consistent with available data from atmospheric and laboratory experiments, direct numerical simulations and large-eddy simulations.

S. S. Zilitinkevich; T. Elperin; N. Kleeorin; V. L'vov; I. Rogachevskii

2009-05-11T23:59:59.000Z

249

Sun, wind and water flow as energy supply for small stationary data acquisition platforms  

Science Conference Proceedings (OSTI)

The deployment of large mesh-type wireless networks is a challenge due to the multitude of arising issues. Perpetual operation of a network node is undoubtedly one of the major goals of any energy-aware protocol or power-efficient hardware platform. ... Keywords: Acquisition station, Energy harvesting, Energy sources, Power management, Precision agriculture

Raul Morais; Samuel G. Matos; Miguel A. Fernandes; Antnio L. G. Valente; Salviano F. S. P. Soares; P. J. S. G. Ferreira; M. J. C. S. Reis

2008-12-01T23:59:59.000Z

250

On Energy Flux and Group Velocity of Waves in Baroclinic Flows  

Science Conference Proceedings (OSTI)

A modified energy flux is defined by adding a nondivergent term that involves ? to the traditional energy flux. The resultant flux, when normalized by the total eddy energy, is exactly equal to the group velocity of Rossby waves on a ? plane with ...

Edmund K. M. Chang; Isidoro Orlanski

1994-12-01T23:59:59.000Z

251

Numerical analysis of temperature and flow effects in a dry, one-dimensional aquifer used for compressed air energy storage  

DOE Green Energy (OSTI)

A detailed description of the method of analysis and the results obtained for an investigation of the hydrodynamic and thermodynamic response of a model of a dry porous media reservoir used for compressed air energy storage (CAES) is presented. Results were obtained from a one-dimensional simulation of the cycling of heated air to and from a radial flow field surrounding a single well in a porous rock. It was assumed that the performance of the bulk of the reservoir could be characterized by the performance of a single well.

Smith, G.C.; Wiles, L.E.; Loscutoff, W.V.

1979-02-01T23:59:59.000Z

252

Power Flow Management in a High Penetration Wind-Diesel Hybrid Power System with Short-Term Energy Storage  

Science Conference Proceedings (OSTI)

This paper is intended as an introduction to some of the control challenges faced by developers of high penetration wind-diesel systems, with a focus on the management of power flows in order to achieve precise regulation of frequency and voltage in the face of rapidly varying wind power input and load conditions. The control algorithms presented herein are being implemented in the National Renewable Energy Laboratory (NREL) high penetration wind-diesel system controller that will be installed in the village of Wales, Alaska, in early 2000.

Drouilhet, S. M.

1999-07-29T23:59:59.000Z

253

Energy studies on central and variable refrigerant flow air-conditioning systems  

Science Conference Proceedings (OSTI)

Air-conditioning is a major contributor to energy end-use in commercial buildings. Different types of airconditioning systems are installed in commercial buildings including packaged systems

2012-01-01T23:59:59.000Z

254

Impacts of increased outdoor air flow rates on annual HVAC energy costs in office environment.  

E-Print Network (OSTI)

??The use of different ventilation systems has an important impact on the energy cost of office buildings. This paper examines the relationship between heating and (more)

Destrez, Adrien

2011-01-01T23:59:59.000Z

255

Vanadium-redox flow and lithium-ion battery modelling and performance in wind energy applications.  

E-Print Network (OSTI)

??As wind energy penetration levels increase, there is a growing interest in using storage devices to aid in managing the fluctuations in wind turbine output (more)

Chahwan, John A.

2007-01-01T23:59:59.000Z

256

Wind flow modeling for wind energy analysis of the Nellis Dunes area in Nevada.  

E-Print Network (OSTI)

??A wind energy analysis of the Nellis Dunes area in Nevada was conducted. A DEM file which contains the elevation data was used to generate (more)

Rangegowda, Upendra

2010-01-01T23:59:59.000Z

257

Isospin distillation with radial flow: A test of the nuclear symmetry energy  

Science Conference Proceedings (OSTI)

We discuss mechanisms related to isospin transport in central collisions between neutron-rich systems at Fermi energies to gain information on the nuclear symmetry energy at and below saturation. A fully consistent study of the isospin distillation and expansion dynamics in two-component systems is presented in the framework of a stochastic transport theory. We analyze correlations between fragment observables, focusing on the study of the fragment asymmetry N/Z as a function of their kinetic energy. We find that the relation between these observables allows us to better characterize the fragmentation path and to access new information on the low-density behavior of the symmetry energy.

Colonna, M. [LNS-INFN, I-95123 Catania (Italy); Baran, V. [NIPNE-HH, Bucharest, and Bucharest University, Bucharest (Romania); Toro, M. Di [LNS-INFN, I-95123 Catania (Italy); Department of Physics and Astronomy, University of Catania, Catania (Italy); Wolter, H. H. [LNS-INFN, I-95123 Catania (Italy); Fakultaet fuer Physik, University of Munich, Garching (Germany)

2008-12-15T23:59:59.000Z

258

ARM - Measurement - Trace gas concentration  

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

govMeasurementsTrace gas concentration govMeasurementsTrace gas concentration ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Trace gas concentration The amount per unit volume of trace gases other than carbon dioxide, ozone and water vapor, typically measured in conjunction with in situ aerosol measurements, e.g. carbon monoxide, nitrogen oxides, sulfur dioxide. Categories Atmospheric Carbon, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments CO : Carbon Monoxide Mixing Ratio System

259

The trace partitioning abstract domain  

Science Conference Proceedings (OSTI)

In order to achieve better precision of abstract interpretation-based static analysis, we introduce a new generic abstract domain, the trace partitioning abstract domain. We develop a theoretical framework allowing a wide range of instantiations of the ...

Xavier Rival; Laurent Mauborgne

2007-08-01T23:59:59.000Z

260

Directed flow of Identified Charged Particles from the RHIC Beam Energy Scan  

E-Print Network (OSTI)

We present the STAR measurements of directed flow, v1, for {\\pi}{\\pm}, K{\\pm}, protons and antiprotons, as well as for all detected charged particles in Au + Au collisions at {\\surd}sNN = 7.7, 11.5 and 39 GeV as a function of transverse momentum, rapidity and centrality. Results are compared to the predictions from transport models.

Yadav Pandit; for the STAR Collaboration

2011-12-05T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Two-phase flow in geothermal energy sources. Final technical report  

DOE Green Energy (OSTI)

A geothermal well consisting of single and two-phase flow sections was modeled in order to explore the variables important to the process. For this purpose a computer program was developed in a versatile form in order to be able to incorporate a variety of two phase flow void fraction and friction correlations. A parametric study indicated that the most significant variables controlling the production rate are: hydrostatic pressure drop or void fraction in the two-phase mixture; and, heat transfer from the wellbore to the surrounding earth. Downhole instrumentation was developed and applied in two flowing wells to provide experimental data for the computer program. The wells (East Mesa 8-1, and a private well) behaved differently. Well 8-1 did not flash and numerous shakedown problems in the probe were encountered. The private well did flash and the instrumentation detected the onset of flashing. A Users Manual was developed and presented in a workshop held in conjunction with the Geothermal Resources Council.

Not Available

1981-07-01T23:59:59.000Z

262

LCA of local strategies for energy recovery from waste in England, applied to a large municipal flow  

Science Conference Proceedings (OSTI)

An intense waste management (WM) planning activity is currently undergoing in England to build the infrastructure necessary to treat residual wastes, increase recycling levels and the recovery of energy from waste. From the analyses of local WM strategic and planning documents we have identified the emerging of three different energy recovery strategies: established combustion of residual waste; pre-treatment of residual waste and energy recovery from Solid Recovered Fuel in a dedicated plant, usually assumed to be a gasifier; pre-treatment of residual waste and reliance on the market to accept the 'fuel from waste' so produced. Each energy recovery strategy will result in a different solution in terms of the technology selected; moreover, on the basis of the favoured solution, the total number, scale and location of thermal treatment plants built in England will dramatically change. To support the evaluation and comparison of these three WM strategy in terms of global environmental impacts, energy recovery possibilities and performance with respect to changing 'fuel from waste' market conditions, the LCA comparison of eight alternative WM scenarios for a real case study dealing with a large flow of municipal wastes was performed with the modelling tool WRATE. The large flow of waste modelled allowed to formulate and assess realistic alternative WM scenarios and to design infrastructural systems which are likely to correspond to those submitted for approval to the local authorities. The results show that all alternative scenarios contribute to saving abiotic resources and reducing global warming potential. Particularly relevant to the current English debate, the performance of a scenario was shown to depend not from the thermal treatment technology but from a combination of parameters, among which most relevant are the efficiency of energy recovery processes (both electricity and heat) and the calorific value of residual waste and pre-treated material. The contribution and relative importance of recycling and treatment/recovery processes change with the impact category. The lack of reprocessing plants in the area of the case study has shown the relevance of transport distances for recyclate material in reducing the efficiency of a WM system. Highly relevant to the current English WM infrastructural debate, these results for the first time highlight the risk of a significant reduction in the energy that could be recovered by local WM strategies relying only on the market to dispose of the 'fuel from waste' in a non dedicated plant in the case that the SRF had to be sent to landfill for lack of treatment capacity.

Tunesi, Simonetta, E-mail: s.tunesi@ucl.ac.uk [Environment Institute, University College London, Pearson Building, Gower Street, WC1E 6BT London (United Kingdom)

2011-03-15T23:59:59.000Z

263

Energy flows in a secondary city: a case study of Nakuru, Kenya  

SciTech Connect

Secondary cities are currently seen as an important focus for promoting a more spatially-equitable pattern of economic infrastructure in developing countries, but their energy needs have not been considered. To test the thesis of this work - that the present pattern of energy demand in secondary cities differs, in important ways, from that of primary cities - a case study was conducted in the East African city of Nakuru, Kenya. Energy supplies used in Nakuru fall into two categories: industrial sources (electricity and petroleum) and traditional sources (wood, charcoal, and agricultural residues). This analysis of Nakuru's use of industrial sources is introduced by a historical discussion of nationwide patterns of distribution, use, and pricing of electricity and petroleum products, and is followed by data gathered from Nakuru's suppliers of these energy sources. The portrait of energy use in Nakuru is completed with an analysis of the demand for traditional energy sources. Surveys were conducted to estimate the total quantities of charcoal, wood, and agricultural resides used in Nakuru. The cornerstone of this effort was a residential energy survey stratified according to income. Nakuru is shown to rely on biomass fuels (charcoal) to a much greater degree than Nairobi, thereby proving the thesis.

Milukas, M.V.

1987-01-01T23:59:59.000Z

264

Isospin Distillation with Radial Flow: a Test of the Nuclear Symmetry Energy  

E-Print Network (OSTI)

We discuss mechanisms related to isospin transport in central collisions between neutron-rich systems at Fermi energies. A fully consistent study of the isospin distillation and expansion dynamics in two-component systems is presented in the framework of a stochastic transport theory. We analyze correlations between fragment observables, focusing on the study of the average N/Z of fragments, as a function of their kinetic energy. We identify an EOS-dependent relation between these observables, allowing to better characterize the fragmentation path and to access new information on the low density behavior of the symmetry energy.

M. Colonna; V. Baran; M. Di Toro; H. H. Wolter

2007-07-20T23:59:59.000Z

265

Energy and Enstrophy Spectra of Geostrophic Turbulent Flows Derived from a Maximum Entropy Principle  

Science Conference Proceedings (OSTI)

The principle of maximum entropy is used to obtain energy and enstrophy spectra as well as average relative vorticity fields in the context of geostrophic turbulence on a rotating sphere. In the unforced-undamped (inviscid) case, the maximization ...

W. T. M. Verkley; Peter Lynch

2009-08-01T23:59:59.000Z

266

Numerical and Physical Modelling of Bubbly Flow Phenomena - Final Report to the Department of Energy  

SciTech Connect

This report describes the main features of the results obtained in the course of this project. A new approach to the systematic development of closure relations for the averaged equations of disperse multiphase flow is outlined. The focus of the project is on spatially non-uniform systems and several aspects in which such systems differ from uniform ones are described. Then, the procedure used in deriving the closure relations is given and some explicit results shown. The report also contains a list of publications supported by this grant and a list of the persons involved in the work.

Andrea Prosperetti

2004-12-21T23:59:59.000Z

267

Two-phase flow in geothermal energy sources. Annual report, June 1, 1975--May 31, 1976  

DOE Green Energy (OSTI)

The purpose of this research program is to create a Design Manual for the design of geothermal production wells that operate in the two-phase flow regime. The team of the Denver Research Institute (contractor) and subcontractors Coury and Associates and the University of Houston are cooperating to achieve this purpose. The role of the Denver Research Institute has included overall administration of the contract, acquisition and handling of two-phase flow data, contacts with other organizations, and development of a probe to measure pressure and temperature in geothermal wells with a precision not previously available, and in real time. For performing the functions involved in placing the measuring probe in a well, the U.S. Geological Survey in Denver has agreed to employ the measuring probe in some of their geothermal test series. The necessity to develop this measuring probe has delayed other portions of the program, but the probe is now almost ready for use, and a calibrating system has been constructed for the probe.

Ross, L.W.

1976-01-01T23:59:59.000Z

268

Elliptic Flow from a Beam Energy Scan: a signature of a phase transition to the Quark-Gluon Plasma  

E-Print Network (OSTI)

We employ a relativistic transport theory to describe the fireball expansion of the matter created in ultra-relativistic heavy-ion collisions (uRHICs). Developing an approach to fix locally the shear viscosity to entropy density $\\eta/s$, we study the impact of a temperature dependent $\\eta/s(T)$ on the build-up of the elliptic flow, $v_2$, a measure of the angular anisotropy in the particle production. Beam Energy Scan from $\\sqrt{s_{NN}}= \\rm 62.4 GeV$ at RHIC up to 2.76 TeV at LHC has shown that the $v_2(p_T)$ as a function of the transverse momentum $p_T$ appears to be nearly invariant with energy. We show that such a surprising behavior is determined by a rise and fall of $\\eta/s(T)$ with a minimum at $T\\sim T_c$, as one would expect if the matter undergoes a phase transition or a cross-over. This provides an evidence for phase transition occurring in the uRHIC's and a first constraint on the temperature dependence of $\\eta/s$. In particular, a constant $\\eta/s$ at all temperatures or a too strong T-dependence would cause a breaking of the scaling of $v_2(p_T)$ with the energy.

S. Plumari; V. Greco; L. P. Csernai

2013-04-24T23:59:59.000Z

269

Multi Agent System to Optimize Comfort and Energy Flows in the Built Environment  

E-Print Network (OSTI)

This paper discusses the control of building energy comfort management systems led by the economic movement within the energy market resulting in different prices. This new generation of building management systems focuses on the application of multi-agent systems for autonomous flexible operation of building services systems to obtain overall improvement energy efficiency and comfort. Multi-agent systems have proven to be successful in many applications to detach the timely interdependencies between systems and applications and come to a decentralize approach. In this study a multi-agent system (MAS) is developed to control and manage building services systems. A case study on an existing building system pointed out that energy consumption is reduced of a central air conditioning unit and local heating and cooling units with help of the proposed market driven multi-agent system, while maintaining comfort within the bands of user preferences. Furthermore it can be concluded that the system adapts to the dynamic changing situation and amount of momentary available resources.

Pennings, L. W.; Houten, M. A.; Boxem, G.; Zeiler, W.

2010-01-01T23:59:59.000Z

270

A study of pumps for the Hot Dry Rock Geothermal Energy extraction experiment (LTFT (Long Term Flow Test))  

DOE Green Energy (OSTI)

A set of specifications for the hot dry rock (HDR) Phase II circulation pumping system is developed from a review of basic fluid pumping mechanics, a technical history of the HDR Phase I and Phase II pumping systems, a presentation of the results from experiment 2067 (the Initial Closed-Loop Flow Test or ICFT), and consideration of available on-site electrical power limitations at the experiment site. For the Phase II energy extraction experiment (the Long Term Flow Test or LTFT) it is necessary to provide a continuous, low maintenance, and highly efficient pumping capability for a period of twelve months at variable flowrates up to 420 gpm and at surface injection pressures up to 5000 psi. The pumping system must successfully withstand attacks by corrosive and embrittling gases, erosive chemicals and suspended solids, and fluid pressure and temperature fluctuations. In light of presently available pumping hardware and electric power supply limitations, it is recommended that positive displacement multiplex plunger pumps, driven by variable speed control electric motors, be used to provide the necessary continuous surface injection pressures and flowrates for LTFT. The decision of whether to purchase the required circulation pumping hardware or to obtain contractor provided pumping services has not been made.

Tatro, C.A.

1986-10-01T23:59:59.000Z

271

Elliptic flow ($v_2$) in pp collisions at energies available at the CERN Large Hadron Collider: A hydrodynamical approach  

E-Print Network (OSTI)

At Large Hadron Collider energy, the expected large multiplicities suggests the presence of collective behavior even in pp collisions. A hydrodynamical approach has been applied to estimate the expected elliptic flow measured by the azimuthal asymmetry parameter $v_2$, in pp collisions at $\\surd$s = 14 TeV. $v_2$ of $\\pi^-$ is found to be strongly dependent on the parton density profile inside a proton [e.g., surface diffuseness parameter ($\\xi$)]. For $\\xi$ = 0.105, $v_2$ is found to be positive while at $\\xi$ = 0.25, $v_2$ is close to zero and approaches negative values at large $p_t$. The impact parameter dependence of $v_2$ has also been studied.

S. K. Prasad; Victor Roy; S. Chattopadhyay; A. K. Chaudhuri

2009-10-26T23:59:59.000Z

272

Converting 15-Minute Interval Electricity Load Data into Reduced Demand, Energy Reduction and Cash Flow  

E-Print Network (OSTI)

Whole-building-electric (WBE) 15-minute interval data is an extremely low-cost, easy approach to reap an immediate reduction in energy consumption. With the advance of lower cost Internet based metering technology integrated with TCP/IP Internet communications, equipment costs and installation issues are not the issues as were in the past. The challenge is to be able to interpret the data and then implement actions to correct operational and equipment problems and anomalies. This paper will address the types of data acquisition equipment and systems available and the different components of a data. Lastly, actual graphs of data will be presented to demonstrate how to dissect and analyze a data set and then implement measures that will optimize operations and maintenance of which will effect a reduction in energy costs.

Herrin, D. G.

2007-12-01T23:59:59.000Z

273

California energy flow in 1978. [Comparison with Cal. , 1977 and US, 1978  

DOE Green Energy (OSTI)

In 1978 California's total energy use was very close to that of 1977. All forms of transportation consumed 40% of all energy used as contrasted to 26% for the nation as a whole for the same year. Compared to 1977, California's use of hydroelectric power increased three-fold as the direct result of the end of the 1976 to 1977 drought. Oil, gas, and electricity usage changed by small measure, +1.6%, -5.8% and +3.6%, respectively. Oil and gas freed by the increased hydroelectric potential was used by other end-use sectors in the state with transportation taking the largest share. Consumption in that sector increased by approximately 11%. A conspicuous change in 1978 was the new mix of crude oil sources. Domestic California production was essentially stable at 19% of the total; foreign imports chiefly from Indonesia fell 50%; interstate shipments chiefly from Alaskan North Slope more than doubled. Natural gas supply sources and uses were similar to those of 1977. Industrial use of natural gas appears to have fallen. There is some indication of fuel switching to fuel oils, relocation of industry to other states and conservation in response to escalated fuel prices. Coal continues to be an insignificant fuel in California. Geothermal contributed less than 2% to total transmitted electricity. The comparable figure for nuclear energy is 4% and for imported power from other states, 20%.

Briggs, C.; Borg, I.Y.

1980-08-01T23:59:59.000Z

274

Trace Gas Emissions - Energy Information Administration  

U.S. Energy Information Administration (EIA)

This suggests that is appropriate to assume that removing corn stover from the field for use as a process fuel will increase erosion and deplete soil nutrients ...

275

Trace Metals in Oil Laboratory Proficiency Program  

Science Conference Proceedings (OSTI)

Lab Proficiency Testing service for Trace Metals in Oil. Soybean oil sample to test for Iron, Copper, and Nickel using AOCS Official method Ca 18-79. Trace Metals in Oil Laboratory Proficiency Program Laboratory Proficiency Program (LPP) aocs applicants

276

Momentum and Energy Transport by Gravity Waves in Stochastically Driven Stratified Flows. Part II: Radiation of Gravity Waves from a Gaussian Jet  

E-Print Network (OSTI)

Momentum and Energy Transport by Gravity Waves in Stochastically Driven Stratified Flows. Part II: Radiation of Gravity Waves from a Gaussian Jet NIKOLAOS A. BAKAS AND BRIAN F. FARRELL Harvard University Interaction between the midlatitude jet and gravity waves is examined, focusing on the nonnormality

Farrell, Brian F.

277

Distributed trace using central performance counter memory  

SciTech Connect

A plurality of processing cores, are central storage unit having at least memory connected in a daisy chain manner, forming a daisy chain ring layout on an integrated chip. At least one of the plurality of processing cores places trace data on the daisy chain connection for transmitting the trace data to the central storage unit, and the central storage unit detects the trace data and stores the trace data in the memory co-located in with the central storage unit.

Satterfield, David L.; Sexton, James C.

2013-01-22T23:59:59.000Z

278

Distributed trace using central performance counter memory  

Science Conference Proceedings (OSTI)

A plurality of processing cores, are central storage unit having at least memory connected in a daisy chain manner, forming a daisy chain ring layout on an integrated chip. At least one of the plurality of processing cores places trace data on the daisy chain connection for transmitting the trace data to the central storage unit, and the central storage unit detects the trace data and stores the trace data in the memory co-located in with the central storage unit.

Satterfield, David L; Sexton, James C

2013-10-22T23:59:59.000Z

279

Phytoremediation of Trace Elements by Wetland Plants  

Science Conference Proceedings (OSTI)

Some plants naturally absorb and hyperaccumulate trace elements in their tissues. In a process known as phytoremediation, scientists are harnessing this ability to remove toxic heavy metals and trace elements from contaminated soils and waters. This screening program quantified the capacity of various wetland plant species for removing trace elements from polluted water.

2001-08-23T23:59:59.000Z

280

Technical Subtopic 2.1: Modeling Variable Refrigerant Flow Heat Pump and Heat Recovery Equipment in EnergyPlus  

Science Conference Proceedings (OSTI)

The University of Central Florida/Florida Solar Energy Center, in cooperation with the Electric Power Research Institute and several variable-refrigerant-flow heat pump (VRF HP) manufacturers, provided a detailed computer model for a VRF HP system in the United States Department of Energy's (U.S. DOE) EnergyPlus? building energy simulation tool. Detailed laboratory testing and field demonstrations were performed to measure equipment performance and compare this performance to both the manufacturer's data and that predicted by the use of this new model through computer simulation. The project goal was to investigate the complex interactions of VRF HP systems from an HVAC system perspective, and explore the operational characteristics of this HVAC system type within a laboratory and real world building environment. Detailed laboratory testing of this advanced HVAC system provided invaluable performance information which does not currently exist in the form required for proper analysis and modeling. This information will also be useful for developing and/or supporting test standards for VRF HP systems. Field testing VRF HP systems also provided performance and operational information pertaining to installation, system configuration, and operational controls. Information collected from both laboratory and field tests were then used to create and validate the VRF HP system computer model which, in turn, provides architects, engineers, and building owners the confidence necessary to accurately and reliably perform building energy simulations. This new VRF HP model is available in the current public release version of DOE?s EnergyPlus software and can be used to investigate building energy use in both new and existing building stock. The general laboratory testing did not use the AHRI Standard 1230 test procedure and instead used an approach designed to measure the field installed full-load operating performance. This projects test methodology used the air enthalpy method where relevant air-side parameters were controlled while collecting output performance data at discreet points of steady-state operation. The primary metrics include system power consumption and zonal heating and cooling capacity. Using this test method, the measured total cooling capacity was somewhat lower than reported by the manufacturer. The measured power was found to be equal to or greater than the manufacturers indicated power. Heating capacity measurements produced similar results. The air-side performance metric was total cooling and heating energy since the computer model uses those same metrics as input to the model. Although the sensible and latent components of total cooling were measured, they are not described in this report. The test methodology set the thermostat set point temperature very low for cooling and very high for heating to measure full-load performance and was originally thought to provide the maximum available capacity. Manufacturers stated that this test method would not accurately measure performance of VRF systems which is now believed to be a true statement. Near the end of the project, an alternate test method was developed to better represent VRF system performance as if field installed. This method of test is preliminarily called the Load Based Method of Test where the load is fixed and the indoor conditions and unit operation are allowed to fluctuate. This test method was only briefly attempted in a laboratory setting but does show promise for future lab testing. Since variable-speed air-conditioners and heat pumps include an on-board control algorithm to modulate capacity, these systems are difficult to test. Manufacturers do have the ability to override internal components to accommodate certification procedures, however, it is unknown if the resulting operation is replicated in the field, or if so, how often. Other studies have shown that variable-speed air-conditioners and heat pumps do out perform their single-speed counterparts though these field studies leave as many questions as they do provide answers. The measure

Raustad, Richard; Nigusse, Bereket; Domitrovic, Ron

2013-09-30T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Shock Scattering in Multiphase Flow Model  

Science Conference Proceedings (OSTI)

Multiphase flow models have been proposed for use in situations which have combined Rayleigh-Taylor (RTI) and Richtmyer-Meshkov (RMI) instabilities. Such an approach works poorly for the case of a heavy to light shock incidence on a developed interface. The physical original of this difficulty is traced to an inadequate model of the interfacial pressure term as it appears in the momentum and turbulence kinetic energy equations. Constraints on the form of a better model from a variety of sources are considered. In this context it is observed that a new constraint on closures arises. This occurs because of the discontinuity within the shock responsible for the RMI. The proposed model (Shock Scattering) is shown to give useful results.

Klem, D

2003-10-16T23:59:59.000Z

282

Shock Scattering in a Multiphase Flow Model  

Science Conference Proceedings (OSTI)

Multiphase flow models have been proposed for use in situations which have combined Rayleigh-Taylor (RTI) and Richtmyer-Meshkov (RMI) instabilities. Such an approach work poorly for the case of a heavy to light shock incidence on a developed interface. The physical original of this difficulty is traced to an inadequate model of the interfacial pressure term as it appears in the momentum and turbulence kinetic energy equations. Constraints on the form of a better model from a variety of sources are considered. In this context it is observed that a new constraint on closures arises. This occurs because of the discontinuity within the shock responsible for the RMI. The proposed model (Shock Scattering) is shown to give useful results.

Klem, D

2003-04-08T23:59:59.000Z

283

Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters-  

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 » Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Details Activities (3) Areas (1) Regions (0) Abstract: A major campaign to quantify the magmatic carbon discharge in cold groundwaters around Mammoth Mountain volcano in eastern California was carried out from 1996 to 1999. The total water flow from all sampled cold springs was >=1.8_107 m3/yr draining an area that receives an estimated

284

Dynamical Energy Analysis - determining wave energy distributions in complex vibro-acoustical structures  

E-Print Network (OSTI)

We propose a new approach towards determining the distribution of mechanical and acoustic wave energy in complex built-up structures. The technique interpolates between standard Statistical Energy Analysis (SEA) and full ray tracing containing both these methods as limiting case. By writing the flow of ray trajectories in terms of linear phase space operators, it is suggested here to reformulate ray-tracing algorithms in terms of boundary operators containing only short ray segments. SEA can now be identified as a low resolution ray tracing algorithm and typical SEA assumptions can be quantified in terms of the properties of the ray dynamics. The new technique presented here enhances the range of applicability of standard SEA considerably by systematically incorporating dynamical correlations wherever necessary. Some of the inefficiencies inherent in typical ray tracing methods can be avoided using only a limited amount of the geometrical ray information. The new dynamical theory - Dynamical Energy Analysis (DEA) - thus provides a universal approach towards determining wave energy distributions in complex structures.

Gregor Tanner

2008-03-12T23:59:59.000Z

285

JV Task-123 Determination of Trace Element Concentrations at an Eastern Bituminous Coal Plant Employing an SCR and Wet FGD  

SciTech Connect

The Energy & Environmental Research Center (EERC), in partnership with Babcock & Wilcox (B&W) and with funding from U.S. Department of Energy (DOE), conducting tests to prove that a high level of mercury control (>90%) can be achieved at a power plant burning a high-sulfur eastern bituminous coal. With funding from the Electric Power Research Institute (EPRI), DOE, and Center for Air Toxic Metals{reg_sign} (CATM{reg_sign}) Affiliates Program, the EERC completed an additional sampling project to provide data as to the behavior of a number of trace elements across the various pollution control devices, with a special emphasis on the wet flue gas desulfurization (FGD) system. Results showed that the concentrations of almost all the elements of interest leaving the stack were very low, and a high percentage of the trace elements were captured in the electrostatic precipitator (ESP) (for most, >80%). Although, with a few exceptions, the overall mass balances were generally quite good, the mass balances across the wet FGD were more variable. This is most likely a result of some of the concentrations being very low and also the uncertainties in determining flows within a wet FGD.

Dennis Laudal

2008-05-01T23:59:59.000Z

286

Trace gases could double climate warming  

SciTech Connect

The atmospheric concentrations of several trace gases capable of changing the climate are increasing. Researchers are concerned about the trace gases despite their miniscule concentrations because they are such efficient absorbers of far-infrared radiation. The trace gases that concern climatologists are methane, nitrous oxide, and the chlorofluorocarbons or CFC's. The increase in atmospheric concentrations of these gases are discussed and atmospheric models predicting their greenhouse effect are described.

Kerr, R.A.

1983-06-24T23:59:59.000Z

287

Visualization and observations on traces - CECM  

E-Print Network (OSTI)

Nov 19, 1997 ... A similar quality appears in resulting columns of a 2-trace operation with the difference that the pattern now merges aspects of the truth table...

288

Towards A Design Environment For Buildingintegrated Energy Systems: The Integration Of Electrical Power Flow Modelling With Building Simulation  

E-Print Network (OSTI)

.................................................................................................................................... xi Chapter 1 - Buildings Energy and Environment ..................................................................... 1 1.1 Energy Use within Buildings............................................................................................1 1.1.1 Environmental Implications.......................................................................................2 1.1.2 Economic Implications ..............................................................................................3 1.2 The Means of Reducing Energy Consumption..................................................................4 1.2.1 Energy End-Use Reduction........................................................................................4 1.2.2 Reducing High-Grade Energy Usage .........................................................................5 1.2.3 Electrical Energy Displa...

Nicolas James Kelly; Building Simulation; Nicolas James; Kelly B. Eng; M. Sc

1998-01-01T23:59:59.000Z

289

Material and energy flows in the materials production, assembly, and end-of-life stages of the automotive lithium-ion battery life cycle  

DOE Green Energy (OSTI)

This document contains material and energy flows for lithium-ion batteries with an active cathode material of lithium manganese oxide (LiMn{sub 2}O{sub 4}). These data are incorporated into Argonne National Laboratory's Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREET) model, replacing previous data for lithium-ion batteries that are based on a nickel/cobalt/manganese (Ni/Co/Mn) cathode chemistry. To identify and determine the mass of lithium-ion battery components, we modeled batteries with LiMn{sub 2}O{sub 4} as the cathode material using Argonne's Battery Performance and Cost (BatPaC) model for hybrid electric vehicles, plug-in hybrid electric vehicles, and electric vehicles. As input for GREET, we developed new or updated data for the cathode material and the following materials that are included in its supply chain: soda ash, lime, petroleum-derived ethanol, lithium brine, and lithium carbonate. Also as input to GREET, we calculated new emission factors for equipment (kilns, dryers, and calciners) that were not previously included in the model and developed new material and energy flows for the battery electrolyte, binder, and binder solvent. Finally, we revised the data included in GREET for graphite (the anode active material), battery electronics, and battery assembly. For the first time, we incorporated energy and material flows for battery recycling into GREET, considering four battery recycling processes: pyrometallurgical, hydrometallurgical, intermediate physical, and direct physical. Opportunities for future research include considering alternative battery chemistries and battery packaging. As battery assembly and recycling technologies develop, staying up to date with them will be critical to understanding the energy, materials, and emissions burdens associated with batteries.

Dunn, J.B.; Gaines, L.; Barnes, M.; Wang, M.; Sullivan, J. (Energy Systems)

2012-06-21T23:59:59.000Z

290

A Dissection of Energetics of the Geostrophic Flow: Reconciliation of Rossby Wave Energy Flux and Group Velocity  

Science Conference Proceedings (OSTI)

It is shown in this paper that there is no ambiguity in the final form of the governing equations of a quasigeostrophic (QG) model after partitioning the total flow into the geostrophic, balanced ageostrophic, and unbalanced ageostrophic ...

Ming Cai; Bohua Huang

2013-07-01T23:59:59.000Z

291

Effects of Mean Flow Direction on Energy, Isotropy, and Coherence of Baroclinically Unstable Beta-Plane Geostrophic Turbulence  

Science Conference Proceedings (OSTI)

The effects of mean flow direction on statistically steady, baroclinically unstable, beta-plane quasigeostrophic (QG) turbulence are examined in a two-layer numerical model. The turbulence is forced by an imposed, horizontally homogeneous, ...

Brian K. Arbic; Glenn R. Flierl

2004-01-01T23:59:59.000Z

292

The role of trace gas flux networks in biogeosciences  

SciTech Connect

Vast networks of meteorological sensors ring the globe, providing continuous measurements of an array of atmospheric state variables such as temperature, humidity, rainfall, and the concentration of carbon dioxide [New etal., 1999; Tans etal., 1996]. These measurements provide input to weather and climate models and are key to detecting trends in climate, greenhouse gases, and air pollution. Yet to understand how and why these atmospheric state variables vary in time and space, biogeoscientists need to know where, when, and at what rates important gases are flowing between the land and the atmosphere. Tracking trace gas fluxes provides information on plant or microbial metabolism and climate-ecosystem interactions. The existence of trace gas flux networks is a relatively new phenomenon, dating back to research in 1984. The first gas flux measurement networks were regional in scope and were designed to track pollutant gases such as sulfur dioxide, ozone, nitric acid, and nitrogen dioxide. Atmospheric observations and model simulations were used to infer the depositional rates of these hazardous chemicals [Fowler etal., 2009; Meyers etal., 1991]. In the late 1990s, two additional trace gas flux measurement networks emerged. One, the United States Trace Gas Network (TRAGNET), was a short-lived effort that measured trace gas emissions from the soil and plants with chambers distributed throughout the country [Ojima etal., 2000]. The other, FLUXNET, was an international endeavor that brought many regional networks together to measure the fluxes of carbon dioxide, water vapor, and sensible heat exchange with the eddy covariance technique [Baldocchi etal., 2001]. FLUXNET, which remains active today, currently includes more than 400 tower sites, dispersed across most of the world's climatic zones and biomes, with sites in North and South America, Europe, Asia, Africa, and Australia. More recently, several specialized networks have emerged, including networks dedicated to urban areas (Urban Fluxnet), nitrogen compounds in Europe (NitroEurope), and methane (MethaneNet). Technical Aspects of Flux Networks Eddy covariance flux measurements are the preferred method by which biogeoscientists measure trace gas exchange between ecosystems and the atmosphere [Baldocchi, 2003].

Baldocch, Dennis [Department of Environmental Science, Policy and Management, University of California, Berkeley,; Reichstein, Markus [Max Planck Institute for Biogeochemistry; Papale, D. [University of Tuscia; KOTEEN, LAURIE [University of California, Berkeley; VARGAS, RODRIGO [Ensenada Center for Scientific Research and Higher Education (CICESE); Agarwal, D.A [Lawrence Berkeley National Laboratory (LBNL); Cook, Robert B [ORNL

2012-01-01T23:59:59.000Z

293

Detector of the flowing of a fluid in a pipe and energy saving device for a hot water system using this detector  

SciTech Connect

A fluid flow sensor, comprising a tubular element having a greater diameter than and vertically mounted on a pipe for serially interconnecting two portions of this pipe. One portion is connected to the upper end of the tubular element while the other portion is connected to its lower end. A magnetic piston is slidably mounted within the tubular element and is therefore free to move along it. A by-pass conduit interconnects the lower portion of the pipe with the upper portion of the pipe. The piston moves upwardly in the tubular element when the fluid flows. Fluid flows from the portion of the pipe connected at the lower end of the tubular element to the one connected at its upper end through the by-pass. The piston moves downwardly by gravity to the lower end of the tubular element when the fluid stops flowing. A coil wound around a portion of the tubular element produces in electrical signal when the piston moves in the tubular element. The piston has a frustroconical element on each end to absorb shocks which result when the piston seats in each position. This detecting device can be mounted on a hot water supply pipe and used in combination with an electronic circuit for saving energy in operating a hot water system. The electronic circuit allows or prevents the thermostat to control the water heating apparatus.

Lawless, J.

1985-02-05T23:59:59.000Z

294

Mercury and Other Trace Metals in Coal  

Science Conference Proceedings (OSTI)

This document summarizes the trace metal analyses of more than 150 as-received bituminous, sub-bituminous, and lignite coal samples from full-scale power plants. Analyses for mercury, arsenic, beryllium, cadmium, chromium, copper, nickel, and lead offer a benchmark for utilities to compare and contrast their own estimates and measurements of trace element content in coal.

1997-02-25T23:59:59.000Z

295

Diagnostic tracing for wireless sensor networks  

Science Conference Proceedings (OSTI)

Wireless sensor networks are typically deployed in harsh environments, thus post-deployment failures are not infrequent. An execution trace containing events in their order of execution could play a crucial role in postmortem diagnosis of these failures. ... Keywords: Embedded debugging, diagnosis, tracing, wireless sensor networks

Vinaitheerthan Sundaram; Patrick Eugster; Xiangyu Zhang; Vamsidhar Addanki

2013-07-01T23:59:59.000Z

296

ESS 2012 Peer Review - Redox Flow Battery (RFB) with Low-cost Electrolyte and Membrane Technologies - Thomas Kodenkandath, ITN Energy Systems  

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

Innovative, high energy density Mn-V based RFB electrolytes as a Innovative, high energy density Mn-V based RFB electrolytes as a low-cost alternate to all-Vanadium systems * Low-cost membrane technology, based on renewable biopolymer Chitosan with improved proton conduction & chemical stability, adaptable to Mn-V system * Scale-up of electrolyte and membrane technologies in pursuit of ARPA-E's goal for a 2.5kW/10kWh RFB stack with integrated BoS at a total cost of ~$1000/unit and ~1.2 m 3 footprint ITN Energy Systems, Inc., Littleton, CO 2.5kW/10kWh Redox Flow Battery (RFB) with Low-cost Electrolyte and Membrane Technologies $2.1 M, 33-month program awarded by ARPA-E Sept 7, 2012 Dr. Thomas Kodenkandath High-Performance, Low-cost RFB through Electrolyte & Membrane Innovations Technology Summary

297

Apparatus and Method for Ultra-Sensitive trace Analysis  

DOE Patents (OSTI)

An apparatus and method for conducting ultra-sensitive trace element and isotope analysis. The apparatus injects a sample through a fine nozzle to form an atomic beam. A DC discharge is used to elevate select atoms to a metastable energy level. These atoms are then acted on by a laser oriented orthogonally to the beam path to reduce the traverse velocity and to decrease the divergence angle of the beam. The beam then enters a Zeeman slower where a counter-propagating laser beam acts to slow the atoms down. Then select atoms are captured in a magneto-optical trap where they undergo fluorescence. A portion of the scattered photons are imaged onto a photo-detector, and the results analyzed to detect the presence of single atoms of the specific trace elements.

Lu, Zhengtian; Bailey, Kevin G.; Chen, Chun Yen; Li, Yimin; O' Connor, Thomas P.; Young, Linda

2000-01-03T23:59:59.000Z

298

Multiphase Flow Modeling Research  

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

Science Science Chris Guenther, Director Computational Science Division RUA Spring Meeting, Morgantown, WV March 2013 2 NETL's Multiphase Flow Science Team * The Multiphase Flow Science Team develops physics-based simulation models to conduct applied scientific research. - Development of new theory - Extensive on-site and collaborative V&V efforts and testing - Engages in technology transfer - Applies the models to industrial scale problems. 3 Why is Multiphase Flow Science Needed? * Industry is increasingly relying on multiphase technologies to produce clean and affordable energy with carbon capture. * Unfortunately, the presence of a solid phase reduces the operating capacity of a typical energy device from its original design on average by 40% [1].

299

TBBT: scalable and accurate trace replay for file server evaluation  

Science Conference Proceedings (OSTI)

This paper describes the design, implementation, and evaluation of TBBT, the first comprehensive NFS trace replay tool. Given an NFS trace, TBBT automatically detects and repairs missing operations in the trace, derives a file system image required to ...

Ningning Zhu; Jiawu Chen; Tzi-Cker Chiueh

2005-12-01T23:59:59.000Z

300

Page not found | Department of Energy  

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

http:energy.govnepadownloadscx-006885-categorical-exclusion-determination Page MANHATTAN PROJECT The Department of Energy traces its origins to World War II and the...

Note: This page contains sample records for the topic "traces energy flows" 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

Easy system call tracing for Plan 9.  

SciTech Connect

Tracing system calls makes debugging easy and fast. On Plan 9, traditionally, system call tracing has been implemented with acid. New systems do not always implement all the capabilities needed for Acid, particularly the ability to rewrite the process code space to insert breakpoints. Architecture support libraries are not always available for Acid, or may not work even on a supported architecture. The requirement that Acid's libraries be available can be a problem on systems with a very small memory footprint, such as High Performance Computing systems where every Kbyte counts. Finally, Acid tracing is inconvenient in the presence of forks, which means tracing shell pipelines is particularly troublesome. The strace program available on most Unix systems is far more convenient to use and more capable than Acid for system call tracing. A similar system on Plan 9 can simplify troubleshooting. We have built a system calling tracing capability into the Plan 9 kernel. It has proven to be more convenient than strace in programming effort. One can write a shell script to implement tracing, and the C code to implement an strace equivalent is several orders of magnitude smaller.

Minnich, Ronald G.

2010-09-01T23:59:59.000Z

302

Visualizing flow patterns in coupled geomechanical simulation using streamlines  

E-Print Network (OSTI)

Reservoir geomechanics is a production induced phenomena that is experienced in large number of fields around the world. Hydrocarbon production changes the pore pressure which in turn alters the in-situ stress state. For reservoirs that are either stress sensitive or where rock is soft and unconsolidated, stresses have appreciable effect on rock properties like porosity and permeability. Anisotropic and isotropic permeability changes affect flow direction and movement of flood front thereby influencing well performance and reservoir productivity. Coupling of geomechanical calculation with multi-phase flow calculation is needed to make prudent predictions about the reservoir production and recovery. The post processing tools provided with the simulators cannot monitor flood front movement and fail to capture important information like flow directionality and dominant phase in a flow. Geomechanical simulation is combined with streamline tracing to aid in better understanding of the reservoir dynamics through visualization of flow patterns in the reservoir. Streamline tracing is a proved reservoir engineering tool that is widely used by industry experts to capture information on flood movement, injector-producer relations and swept area. In the present research, we have incorporated total velocity streamlines and phase streamlines for coupled geomechanical simulation and compared the results with streamline tracing for conventional reservoir simulator to explain geomechanics behavior on reservoir flow processes in a more detailed and appealing manner. Industry standard simulators are used for coupled geomechanical simulation and conventional simulation and streamline tracing has been done through in-house tracing code. The research demonstrates the benefits and power of streamline tracing in visualizing flow patterns through work on two cases; first, a synthetic case for studying water injection in a five spot pattern and second, a SPE 9th comparative study. The research gives encouraging results by showing how geomechanics influences reservoir flow paths and reservoir dynamics through visualization of flow. The streamlines captures flow directionality, information regarding appearance and disappearance of gas phase and the connectivity between injector and producer.

Parihar, Prannay

2008-12-01T23:59:59.000Z

303

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID...  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: TRACING...

304

Available Technologies:EnergyPlus: Energy Simulation Software ...  

EnergyPlus is a building energy simulation program for modeling building heating, cooling, lighting, ventilating, and other energy flows

305

Atom Trap Trace Analysis at ANL | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Atom Trap Trace Analysis at ANL Atom Trap Trace Analysis at ANL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Atom Trap Trace Analysis at ANL Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Atom Trap Trace Analysis (ATTA) to determine isotopic abundances. Developed at: Argonne National Laboratory Developed in: 1999-current

306

Patterns in the Cosmos Trace Evolution of the Universe | U.S. DOE Office of  

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

Patterns in the Cosmos Trace Evolution of the Universe Patterns in the Cosmos Trace Evolution of the Universe High Energy Physics (HEP) HEP Home About Research Facilities Science Highlights Benefits of HEP Funding Opportunities Advisory Committees News & Resources Contact Information High Energy Physics U.S. Department of Energy SC-25/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3624 F: (301) 903-2597 E: sc.hep@science.doe.gov More Information » August 2013 Patterns in the Cosmos Trace Evolution of the Universe Detection of subtle polarization patterns in the Cosmic Microwave Background opens a new window on fundamental physics and cosmology. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of Stephen Hoover (SPT Team member)

307

ESS 2012 Peer Review - Flow Battery Solution for Smart Grid Renewable Energy Applications - Sheri Nevins, Raytheon & Ron Moss, EnerVault  

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

2012, Raytheon Proprietary and EnerVault Corporation, All Rights Reserved. 2012, Raytheon Proprietary and EnerVault Corporation, All Rights Reserved. 1 Sheri Nevins Raytheon Ktech Ron Mosso EnerVault Corporation DEMONSTRATION OF ENERGY STORAGE USING A BREAKTHROUGH REDOX FLOW BATTERY TECHNOLOGY v. 1-0 Copyright ©2012, Raytheon Proprietary and EnerVault Corporation, All Rights Reserved. 2 Disclaimer This material is partially based upon work supported by NYSERDA under PON1200 Project 15880 NYSERDA has not reviewed the information contained herein, and the opinions expressed in this report do not necessarily reflect those of NYSERDA or the State of New York. This material is partially based upon work supported by the Department of Energy under Award Number DE-OE0000225. This report was prepared as an account of work sponsored by an agency of the United States

308

Page not found | Department of Energy  

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

11 - 9720 of 29,416 results. 11 - 9720 of 29,416 results. Download CX-009355: Categorical Exclusion Determination Building 922 Ice Melt/Heat Trace Project CX(s) Applied: B1.3 Date: 09/20/2012 Location(s): Pennsylvania Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-009355-categorical-exclusion-determination Download CX-009356: Categorical Exclusion Determination Houston Zero Emission Delivery Vehicle Deployment CX(s) Applied: B5.1 Date: 09/20/2012 Location(s): Missouri Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-009356-categorical-exclusion-determination Download CX-009357: Categorical Exclusion Determination Building Energy Flow Model and Simulation CX(s) Applied: A1, A9 Date: 09/19/2012 Location(s): Massachusetts

309

Page not found | Department of Energy  

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

301 - 14310 of 28,560 results. 301 - 14310 of 28,560 results. Download CX-009355: Categorical Exclusion Determination Building 922 Ice Melt/Heat Trace Project CX(s) Applied: B1.3 Date: 09/20/2012 Location(s): Pennsylvania Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-009355-categorical-exclusion-determination Download CX-009356: Categorical Exclusion Determination Houston Zero Emission Delivery Vehicle Deployment CX(s) Applied: B5.1 Date: 09/20/2012 Location(s): Missouri Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-009356-categorical-exclusion-determination Download CX-009357: Categorical Exclusion Determination Building Energy Flow Model and Simulation CX(s) Applied: A1, A9 Date: 09/19/2012 Location(s): Massachusetts

310

Integrating hardware and software information flow analyses  

Science Conference Proceedings (OSTI)

Security-critical communications devices must be evaluated to the highest possible standards before they can be deployed. This process includes tracing potential information flow through the device's electronic circuitry, for each of the device's operating ... Keywords: communications devices, embedded software, information security evaluation

Colin J. Fidge; Diane Corney

2009-06-01T23:59:59.000Z

311

Accelerating ray tracing using constrained tetrahedralizations  

Science Conference Proceedings (OSTI)

In this paper we introduce the constrained tetrahedralization as a new acceleration structure for ray tracing. A constrained tetrahedralization of a scene is a tetrahedralization that respects the faces of the scene geometry. The closest intersection ...

Ares Lagae; Philip Dutr

2008-06-01T23:59:59.000Z

312

Definition of the n-Trace - CECM  

E-Print Network (OSTI)

Nov 19, 1997 ... Definition of the n-Trace. Suppose $\\Sigma$ is a set of inputs $\\Sigma = \\{\\ alpha_1,\\alpha_2,\\alpha_3.. . Then the set $\\wp(\\Sigma)$...

313

Extraction of trace metals from fly ash  

DOE Patents (OSTI)

A process for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous, the fly ash having a silicate base and containing surface deposits of the trace metals as oxides, chlorides or the like, with the process being carried out by contacting the fly ash with AlCl.sub.3 in an alkali halide melt to react the trace metals with the AlCl.sub.3 to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, Milton (Palos Park, IL); Wai, Chien M. (Moscow, ID); Nagy, Zoltan (Woodridge, IL)

1984-01-01T23:59:59.000Z

314

Extraction of trace metals from fly ash  

DOE Patents (OSTI)

A process is described for recovering silver, gallium and/or other trace metals from a fine grained industrial fly ash associated with a process for producing phosphorous. The fly ash has a silicate base and contains surface deposits of the trace metals as oxides, chlorides or the like. The process is carried out by contacting the fly ash with AlCl/sub 3/ in an alkali halide melt to react the trace metals with the AlCl/sub 3/ to form compositions soluble in the melt and a residue containing the silicate and aluminum oxide or other aluminum precipitate, and separating the desired trace metal or metals from the melt by electrolysis or other separation techniques.

Blander, M.; Wai, C.M.; Nagy, Z.

1983-08-15T23:59:59.000Z

315

TRACE ELEMENT ANALYSES OF URANIUM MATERIALS  

SciTech Connect

The Savannah River National Laboratory (SRNL) has developed an analytical method to measure many trace elements in a variety of uranium materials at the high part-per-billion (ppb) to low part-per-million (ppm) levels using matrix removal and analysis by quadrapole ICP-MS. Over 35 elements were measured in uranium oxides, acetate, ore and metal. Replicate analyses of samples did provide precise results however none of the materials was certified for trace element content thus no measure of the accuracy could be made. The DOE New Brunswick Laboratory (NBL) does provide a Certified Reference Material (CRM) that has provisional values for a series of trace elements. The NBL CRM were purchased and analyzed to determine the accuracy of the method for the analysis of trace elements in uranium oxide. These results are presented and discussed in the following paper.

Beals, D; Charles Shick, C

2008-06-09T23:59:59.000Z

316

Impacts of Dibasic Acid (DBA) Addition on the Performance of a Pilot Vertical Flow Cell: Duke Energy Marshall Steam Station  

Science Conference Proceedings (OSTI)

This report presents the results of a pilot study conducted to test the potential impact of dibasic acid (DBA) on vertical flow cells (VFCs) constructed to remove selenium and mercury from a flue gas desulfurization (FGD) scrubber discharge. VFCs are a passive treatment technology with very low operational and maintenance costs and the potential for order-of-magnitude savings over conventional treatment methods. A full-scale VFC system has been constructed at a power generating facility based on ...

2013-04-08T23:59:59.000Z

317

Application of heat-flow techniques to geothermal energy exploration, Leach Hot Springs area, Grass Valley, Nevada  

DOE Green Energy (OSTI)

A total of 82 holes ranging in depth from 18 to 400 meters were drilled for thermal and hydrologic studies in a 200 km/sup 2/ area of Grass Valley, Nevada, near Leach Hot Springs. Outside the immediate area of Leach Hot Springs, heat flow ranges from 1 to 6.5 hfu with a mean of 2.4 hfu (1 hfu = 10/sup -6/ cal cm/sup 2/ s/sup -1/ = 41.8 mWm/sup -2/). Within 2 km of the springs, conductive heat flow ranges between 1.6 and more than 70 hfu averaging 13.6 hfu. Besides the conspicuous thermal anomaly associated with the hot springs, two additional anomalies were identified. One is associated with faults bounding the western margin of the Tobin Range near Panther Canyon, and the other is near the middle of Grass Valley about 5 km SSW of Leach Hot Springs. The mid-valley anomaly appears to be caused by hydrothermal circulation in a bedrock horst beneath about 375 meters of impermeable valley sediments. If the convective and conductive heat discharge within 2 km of the Leach Hot Springs is averaged over the entire hydrologic system (including areas of recharge), the combined heat flux from this part of Grass Valley is about 3 hfu, consistent with the average regional conductive heat flow in the Battle Mountain High. The hydrothermal system can be interpreted as being in a stationary stable phase sustained by high regional heat flow, and no localized crustal heat sources (other than hydrothermal convection to depths of a few kilometers) need be invoked to explain the existence of Leach Hot Springs.

Sass, J.H.; Ziagos, J.P.; Wollenberg, H.A.; Munroe, R.J.; di Somma, D.E.; Lachenbruch, A.H.

1977-01-01T23:59:59.000Z

318

Hot dry rock energy project  

DOE Green Energy (OSTI)

A proof-of-concept experimental project by the Los Alamos Scientific Laboratory endeavors to establish the feasibility of exploitation of the thermal energy contained in the earth's crust where such energy and a transporting fluid have not been juxtaposed in nature. A region of high heat flow and apparently unfaulted basement rock formation was selected. Two boreholes, drilled to a total depth of about 3 km (10,000 ft) and penetrating about 2.5 km (7500 ft) into the Precambrian formation, to a rock temperature of 200/sup 0/C, have been connected at depth by a hydraulically fractured zone to form the heat extraction surface. Energy was extracted at a rate of 3.2 MW(t) with water temperature of 132/sup 0/C during a 96-h preliminary circulating test run performed late in September 1977. This paper traces the progress of the project, summarizes procedures and salient events, and references detailed reports and specialized topics.

Hendron, R.H.

1977-01-01T23:59:59.000Z

319

Estimating the Annual Water and Energy Savings in Texas A & M University Cafeterias using Low Flow Pre-Rinse Spray Valves  

E-Print Network (OSTI)

Improving the efficiency of a Pre- Rinse Spray Valve (PRSV) is one of the most cost effective water conservation methods in the Food Services Industry. A significant contributor to this cost efficiency is the reduction in the energy costs required to provide the mandatory hot water. This research paper estimates the potential quantity and dollar value of the water and energy that can be saved annually in Texas A&M University's dining services with the installation of low flow pre-rinse spray valves. The data collection was obtained from four of Texas A&M University's Dining Services facilities. The annual savings were estimated by contrasting the water consumption of the existing T & S Brass B 0107-M PRSVs with the latest and most advanced available low flow T and S Brass B 0107-C PRSV. The annual water consumption of the existing and new PRSVs were predicted by measuring an individual average flow rate for each and observing the number of hours per day the PRSV would be used. The observed and measured values were extrapolated to amount rates to determine cost savings. The dollar value was ascertained using the utility cost data recorded over a semester by the Facilities Coordinator of the Department of Dining Services. The findings of this study show that the water savings from a single PRSV could lead to an estimated annual saving ranging between 46% and 78% of the current operation cost. The T & S Brass B 0107-C PRSV is currently priced between $52- $60 per valve resulting in a payback period ranging between 1.5-6 months per valve. If every valve on campus was replaced, the University could reap a savings in the range of $ 5,400- $22,590 over the 5 year useful life of the valve, having initially invested less than $550.

Rebello, Harsh Varun

2010-05-01T23:59:59.000Z

320

Hydrogen as an Indicator to Assess Biological Activity During Trace-Metal Bioremediation  

DOE Green Energy (OSTI)

The design and operation of a trace-metal or radionuclide bioremediation scheme requires that specific redox conditions be achieved at given zones of an aquifer for a pre-determined duration. Tools are therefore needed to identify and quantify the terminal electron accepting processes (TEAPs) that are being achieved during bioremediation in an aquifer, and that this be done at a high spatial resolution. Dissolved hydrogen (H{sub 2}) concentrations have been shown to correlate with specific TEAPs during bioremediation in an aquifer (Table 1). Theoretical analysis has shown that these steady-state hydrogen levels are solely dependent upon the physiological parameters of the hydrogen-consuming microorganisms, with hydrogen concentrations increasing as each successive TEAP yields less energy for bacterial growth. The assumptions for this statement may not hold during a bioremediation scheme in which an organic substrate is injected into the subsurface and where organisms may consume hydrogen and carbon simultaneously. This research examines the effects of simultaneous hydrogen and carbon utilization through obtaining kinetic parameters of both hydrogen and carbon consumption under iron reducing conditions in batch experiments. A dual-donor model was formulated and compared to flow-through column experiments.

Jaffe, Peter R.; Lovley, Derek; Komlos, John; Brown, Derick

2004-03-17T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

EnergyPlus: Energy Simulation Software for Buildings - Energy ...  

EnergyPlus is a building energy simulation program for modeling building heating, cooling, lighting, ventilating, and other energy flows. While it is based on the ...

322

Glossary - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Energy Information Administration 137 Energy Policy Act Transportation Study: Interim Report on Natural Gas Flows and Rates Glossary Affiliated ...

323

RMOTC - Testing - Flow Assurance  

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

Flow Assurance Flow Assurance RMOTC Flow Loop Facility Layout Notice: As of July 15th 2013, the Department of Energy announced the intent to sell Naval Petroleum Reserve Number 3 (NPR3). The sale of NPR-3 will also include the sale of all equipment and materials onsite. A decision has been made by the Department of Energy to complete testing at RMOTC by July 1st, 2014. RMOTC will complete testing in the coming year with the currently scheduled testing partners. For more information on the sale of NPR-3 and sale of RMOTC equipment and materials please join our mailing list here. Over a decade ago, RMOTC began cooperatively building a full-scale facility to test new flow assurance technology, mainly in the areas of hydrates and paraffins. Today, RMOTC's test facility consists of five individual loop

324

Piezoelectric Artificial Kelp: Experimentally Validated Parameter Optimization of a Quasi-Static, Flow-Driven Energy Harvester  

E-Print Network (OSTI)

Piezoelectric energy harvesting is the process of taking an external mechanical input and converting it directly into electrical energy via the piezoelectric effect. To determine the power created by a piezoelectric energy harvester, a specific application with defined input and design constraints must first be chosen. The following thesis established a concept design of a hydrokinetic energy harvesting system, the piezoelectric artificial kelp (PAK), which uses piezoelectric materials to harvest coastal ocean waves while having a beneficial impact on the surrounding environment. The harvester design mimics the configuration of sea-kelp, a naturally occurring plant that anchors to the ocean floor and extends into the water column. Underwater currents caused by wave-action result in periodic oscillations in the kelp. In order to determine the average power generated by this design concept, predictive tools were devised that allowed for the determination of the optimized average power produced by the piezoelectric energy harvester. For a stiff energy harvester, the linear differential equations were analytically solved to find an equation for the average power generated as a function of design parameters. These equations were used to compare the effect on power output of the design configuration and piezoelectric material choice between a piezopolymer (PVDF) and a piezoceramic (PZT). The homogeneous bimorph was found to have the optimal design configuration and it was shown that a harvester constructed using PVDF would produce approximately 1.6 times as much power as one using PZT. For a flexible energy harvester, an iterative nonlinear solution technique using an assumed polynomial solution for the local curvature of the energy harvester was used to verify and extend the analytic solutions to large deflections. An energy harvester was built using off-the-shelf piezoelectric elements and tested in a wave tank facility to validate experimentally the voltage and average power predicted by the analytical solution. The iterative code showed the PAK harvester to produce volumetric power on the order of other energy harvesting concepts (17.8 micro [mu]W/cm). Also, a full-scale PAK harvester approximately ten meters long in typical wave conditions was found to produce approximately one watt of power.

Pankonien, Alexander Morgan

2011-08-01T23:59:59.000Z

325

Formation of electrostatic structures by wakefield acceleration in ultrarelativistic plasma flows: Electron acceleration to cosmic ray energies  

SciTech Connect

The ever increasing performance of supercomputers is now enabling kinetic simulations of extreme astrophysical and laser produced plasmas. Three-dimensional particle-in-cell (PIC) simulations of relativistic shocks have revealed highly filamented spatial structures and their ability to accelerate particles to ultrarelativistic speeds. However, these PIC simulations have not yet revealed mechanisms that could produce particles with tera-electron volt energies and beyond. In this work, PIC simulations in one dimension (1D) of the foreshock region of an internal shock in a gamma ray burst are performed to address this issue. The large spatiotemporal range accessible to a 1D simulation enables the self-consistent evolution of proton phase space structures that can accelerate particles to giga-electron volt energies in the jet frame of reference, and to tens of tera-electron volt in the Earth's frame of reference. One potential source of ultrahigh energy cosmic rays may thus be the thermalization of relativistically moving plasma.

Dieckmann, M.E.; Shukla, P.K.; Eliasson, B. [Institute of Theoretical Physics IV, Ruhr-University Bochum, D-44780 Bochum (Germany)

2006-06-15T23:59:59.000Z

326

A Comprehensive Review of the Tests Completed on the Flow Loop at the Energy Systems Laboratory (Draft)  

E-Print Network (OSTI)

In 1988 the Governor's Energy Office (GEO) of Texas received approval from the U.S. Department of Energy to establish a $98.6 million state-wide retrofit demonstration program, the LoanSTAR (Loan to Save Taxes and Resources) Program. The LoanSTAR Program was designed to demonstrate commercially available, energy efficient, retrofit technologies and techniques. Part of the approved DOE program includes monitoring buildings to determine the effectiveness of the retrofits. The monitoring for this program is composed of thermal metering (chilled and hot water Btu measurements), electrical load metering, psychrometric data (cooling and heating coil temperatures and humidities), and weather monitoring. All of the sensors and monitoring equipment must be calibrated prior to installation and recalibrated periodically while in service. For this purpose, a calibration facility was developed in which National Institute of Standards and Technology (NIST)- traceable instrumentation is maintained (Turner et al. 1992).

Robinson, J.

1992-01-01T23:59:59.000Z

327

Use of the GranuFlow Process in Coal Preparation Plants to Improve Energy Recovery and Reduce Coal Processing Wastes  

Science Conference Proceedings (OSTI)

With the increasing use of screen-bowl centrifuges in today's fine coal cleaning circuits, a significant amount of low-ash, high-Btu coal can be lost during the dewatering step due to the difficulty in capturing coal of this size consist (< 100 mesh or 0.15mm). The GranuFlow{trademark} technology, developed and patented by an in-house research group at DOE-NETL, involves the addition of an emulsified mixture of high-molecular-weight hydrocarbons to a slurry of finesized coal before cleaning and/or mechanical dewatering. The binder selectively agglomerates the coal, but not the clays or other mineral matter. In practice, the binder is applied so as to contact the finest possible size fraction first (for example, froth flotation product) as agglomeration of this fraction produces the best result for a given concentration of binder. Increasing the size consist of the fine-sized coal stream reduces the loss of coal solids to the waste effluent streams from the screen bowl centrifuge circuit. In addition, the agglomerated coal dewaters better and is less dusty. The binder can also serve as a flotation conditioner and may provide freeze protection. The overall objective of the project is to generate all necessary information and data required to commercialize the GranuFlow{trademark} Technology. The technology was evaluated under full-scale operating conditions at three commercial coal preparation plants to determine operating performance and economics. The handling, storage, and combustion properties of the coal produced by this process were compared to untreated coal during a power plant combustion test.

Glenn A. Shirey; David J. Akers

2005-12-31T23:59:59.000Z

328

A Kinetic Energy Climatology of Flow Regimes Associated with 500 mb Waves over North America in Winter and Spring  

Science Conference Proceedings (OSTI)

A diagnostic analysis of kinetic energy budgets for midlatitude 500 mb synoptic-scale waves in the winterspring season is presented. The data used were standard twice-daily rawinsonde observations in 50 mb increments from the surface to 100 mb ...

Yi-Tsuei Pai Sheu; Phillip J. Smith

1981-09-01T23:59:59.000Z

329

Trace-element geochemistry of coal resource development related to environmental quality and health  

Science Conference Proceedings (OSTI)

This report assesses for decision makers and those involved in coal resource development the environmental and health impacts of trace-element effects arising from significant increases in the use of coal, unless unusual precautions are invoked. Increasing demands for energy and the pressing need for decreased dependence of the United States on imported oil require greater use of coal to meet the nation's energy needs during the next decade. If coal production and consumption are increased at a greatly accelerated rate, concern arises over the release, mobilization, transportation, distribution, and assimilation of certain trace elements, with possible adverse effects on the environment and human health. It is, therefore, important to understand their geochemical pathways from coal and rocks via air, water, and soil to plants, animals, and ultimately humans, and their relation to health and disease. To address this problem, the Panel on Trace Element Geochemistry of Coal Resource Development Related to Health (PECH) was established. Certain assumptions were made by the Panel to highlight the central issues of trace elements and health and to avoid unwarranted duplication of other studies. Based on the charge to the Panel and these assumptions, this report describes the amounts and distribution of trace elements related to the coal source; the various methods of coal extraction, preparation, transportation, and use; and the disposal or recycling of the remaining residues or wastes. The known or projected health effects are discussed at the end of each section.

Not Available

1980-01-01T23:59:59.000Z

330

Assessment of technical strengths and information flow of energy conservation research in Japan. Volume 2. Background document  

Science Conference Proceedings (OSTI)

Purpose of this study is to explore the status of R and D in Japan and the ability of US researchers to keep abreast of Japanese technical advances. US researchers familiar with R and D activities in Japan were interviewed in ten fields that are relevant to the more efficient use of energy: amorphous metals, biotechnology, ceramics, combustion, electrochemical energy storage, heat engines, heat transfer, high-temperature sensors, thermal and chemical energy storage, and tribology. The researchers were questioned about their perceptions of the strengths of R and D in Japan, comparative aspects of US work, and the quality of available information sources describing R and D in Japan. Of the ten related fields, the researchers expressed a strong perception that significant R and D is under way in amorphous metals, biotechnology, and ceramics, and that the US competitive position in these technologies will be significantly challenged. Researchers also identified alternative emphases in Japanese R and D programs in these areas that provide Japan with stronger technical capabilities. For example, in biotechnology, researchers noted the significant Japanese emphasis on industrial-scale bioprocess engineering, which contrasts with a more meager effort in the US. In tribology, researchers also noted the strength of the chemical tribology research in Japan and commented on the effective mix of chemical and mechanical tribology research. This approach contrasts with the emphasis on mechanical tribology in the US.

Hane, G.J.; Lewis, P.M.; Hutchinson, R.A.; Rubinger, B.; Willis, A.

1985-06-01T23:59:59.000Z

331

Runtime verification for multicore SoC with high-quality trace data  

Science Conference Proceedings (OSTI)

Multicore System-on-Chip (SoC) implementations of embedded systems are becoming very popular. In these systems it is possible to spread out computations over many cores. On one hand this leads to better energy efficiency if clock frequencies and core ... Keywords: Multicore SoC, embedded system, runtime verification, synchronisation, test driven development, trace data

Rico Backasch; Christian Hochberger; Alexander Weiss; Martin Leucker; Richard Lasslop

2013-03-01T23:59:59.000Z

332

Emission Factors Handbook: Guidelines for Estimating Trace Substance Emissions from Fossil Fuel Steam Electric Plants  

Science Conference Proceedings (OSTI)

The "Emission Factors Handbook" provides a tool for estimating trace substances emissions from fossil-fuel-fired power plants. The suggested emission factors are based on EPRI and Department of Energy (DOE) field measurements conducted at over 50 power plants using generally consistent sampling and analytical protocols. This information will help utility personnel estimate air toxic emissions for permitting purposes.

2002-04-10T23:59:59.000Z

333

Effects of Transient Eddies on Blocking Flows: General Circulation Model Experiments  

Science Conference Proceedings (OSTI)

Prediction of blocking flows by a comprehensive general circulation model is still not satisfactory. A large portion of the unskillful forecasts can be traced to the model's inability to predict the evolution of blocking beyond a few days into ...

Wilbur Y. Chen; Hann-ming Henry Juang

1992-05-01T23:59:59.000Z

334

Biological trace element measurements using synchrotron radiation  

SciTech Connect

The feasibility of performing x-ray fluorescence trace element determinations at concentrations substantially below the ppM level for biological materials is demonstrated. Conditions for achieving optimum sensitivity were ascertained. Results achieved for five standard reference materials were, in most cases, in excellent agreement with listed values. Minimum detectable limits of 20 ppM were measured for most elements.

Giauque, R.D.; Jaklevic, J.M.; Thompson, A.C.

1985-07-01T23:59:59.000Z

335

Spent fuel pool analysis using TRACE code  

SciTech Connect

The storage requirements of Spent Fuel Pools have been analyzed with the purpose to increase their rack capacities. In the past, the thermal limits have been mainly evaluated with conservative codes developed for this purpose, although some works can be found in which a best estimate code is used. The use of best estimate codes is interesting as they provide more realistic calculations and they have the capability of analyzing a wide range of transients that could affect the Spent Fuel Pool. Two of the most representative thermal-hydraulic codes are RELAP-5 and TRAC. Nowadays, TRACE code is being developed to make use of the more favorable characteristics of RELAP-5 and TRAC codes. Among the components coded in TRACE that can be used to construct the model, it is interesting to use the VESSEL component, which has the capacity of reproducing three dimensional phenomena. In this work, a thermal-hydraulic model of the Maine Yankee spent fuel pool using the TRACE code is developed. Such model has been used to perform a licensing calculation and the results obtained have been compared with experimental measurements made at the pool, showing a good agreement between the calculations predicted by TRACE and the experimental data. (authors)

Sanchez-Saez, F.; Carlos, S.; Villanueva, J. F.; Martorell, S. [Dept. of Chemical and Nuclear Engineering, Universitat Politenica de Valencia, Cami de Vera s/n, 46021, Valencia (Spain)

2012-07-01T23:59:59.000Z

336

Stochastic path tracing on consumer graphics cards  

Science Conference Proceedings (OSTI)

We present a path tracer using the GPU of a consumers graphics card to render images. It is implemented in Java and GLSL using GroIMP as modelling platform and runtime environment. The path tracer is capable of rendering primitives like sphere, cone, ... Keywords: GPU, HDR, global illumination, path tracing, procedural texturing, raytracing, texture mapping

Thomas Huwe; Reinhard Hemmerling

2008-04-01T23:59:59.000Z

337

Turbulence transmission in parallel modified shocks using ray tracing  

E-Print Network (OSTI)

We apply a semi-classical approach of handling waves as quasiparticle gas in a slowly varying flow -- analogous to ray tracing -- to calculate the Alfven wave transmission parameters, the resulting cross-helicity of the waves and the scattering-centre compression ratio, for cases where the shock thickness is large enough for the turbulent waves in the plasma to see the transition of the background flow parameters as smooth and slowly varying. For nonrelativistic shocks the wave transmission produces similar effects on the downstream turbulence and the scattering-centre compression ratio as does the transmission through a step shock: the downstream Alfven waves propagate predominantly towards the shock in the local plasma frame and, thus, the scattering-centre compression ratio is larger than the gas compression ratio. For thick relativistic shocks, however, we find qualitative differences with respect to the step-shock case: for low-Alfvenic-Mach-number shocks the downstream waves propagate predominantly away from the shock, and the scattering-centre compression ratio is lower than that of the gas. Thus, when taken into account, the Alfven wave transmission can decrease the efficiency of the first-order Fermi acceleration in a thick relativistic shock.

Joni Tammi; Rami Vainio

2006-09-14T23:59:59.000Z

338

On conditions of negativity of friction resistance for non-stationary modes of blood flow and possible mechanism of affecting of environmental factors on energy effectiveness of cardio-vascular system functioning  

E-Print Network (OSTI)

It is shown that initiated by action of molecular viscosity impulse flow, directed usually from the moving fluid to limiting it solid surface, can, under certain conditions, turn to zero and get negative values in the case of non-stationary flow caused by alternating in time longitudinal (along the pipe axis) pressure gradient. It is noted that this non-equilibrium mechanism of negative friction resistance in the similar case of pulsating blood flow in the blood vessels, in addition to the stable to turbulent disturbances swirled blood flow structure providing, can also constitute hydro-mechanical basis of the observed but not explained yet paradoxically high energy effectiveness of the normal functioning of the cardio-vascular system (CVS). We consider respective mechanism of affecting on the stability of the normal work of CVS by environmental variable factors using shifting of hydro-dynamic mode with negative resistance realization range boundaries and variation of linear hydro-dynamic instability leading ...

Chefranov, S G

2013-01-01T23:59:59.000Z

339

ESS 2012 Peer Review - Thermoelectrochemical Energy Storage ...  

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

of Energy's Office of Electricity Delivery & Energy Reliability. Thermoelectrochemical Energy Storage Problem: Flow batteries exhibit inefficiencies that are affected by...

340

PowerTracer: Tracing requests in multi-tier services to save cluster power consumption  

E-Print Network (OSTI)

As energy proportional computing has extended the success of DVFS (Dynamic voltage and frequency scaling) to the entire system, DVFS control algorithms will play a key role in reducing server clusters' power consumption. The focus of this paper is to provide accurate cluster-level DVFS control for power saving in a server cluster. To achieve this goal, we propose a request tracing approach that online classifies the major causal path patterns and monitors their performance data as a guide for accurate DVFS control. The request tracing approach significantly decreases the time cost of performance profiling experiments that aim to establish the empirical performance model. Moreover, it decreases the controller complexity so that we can introduce a much simpler feedback controller, which only relies on the single-node DVFS modulation at a time as opposed to varying multiple CPU frequencies simultaneously. Based on the request tracing approach, we present a hybrid DVFS control system that combines an empirical pe...

Yuan, Lin; Sang, Bo; Wang, Lei; Wang, Haining

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Energy Consumption of Die Casting Operations  

SciTech Connect

Molten metal processing is inherently energy intensive and roughly 25% of the cost of die-cast products can be traced to some form of energy consumption [1]. The obvious major energy requirements are for melting and holding molten alloy in preparation for casting. The proper selection and maintenance of melting and holding equipment are clearly important factors in minimizing energy consumption in die-casting operations [2]. In addition to energy consumption, furnace selection also influences metal loss due to oxidation, metal quality, and maintenance requirements. Other important factors influencing energy consumption in a die-casting facility include geographic location, alloy(s) cast, starting form of alloy (solid or liquid), overall process flow, casting yield, scrap rate, cycle times, number of shifts per day, days of operation per month, type and size of die-casting form of alloy (solid or liquid), overall process flow, casting yield, scrap rate, cycle times, number of shifts per day, days of operation per month, type and size of die-casting machine, related equipment (robots, trim presses), and downstream processing (machining, plating, assembly, etc.). Each of these factors also may influence the casting quality and productivity of a die-casting enterprise. In a die-casting enterprise, decisions regarding these issues are made frequently and are based on a large number of factors. Therefore, it is not surprising that energy consumption can vary significantly from one die-casting enterprise to the next, and within a single enterprise as function of time.

Jerald Brevick; clark Mount-Campbell; Carroll Mobley

2004-03-15T23:59:59.000Z

342

Tracefs: a file system to trace them all  

Science Conference Proceedings (OSTI)

File system traces have been used for years to analyze user behavior and system software behavior, leading to advances in file system and storage technologies. Existing traces, however, are difficult to use because they were captured for a specific use ...

Akshat Aranya; Charles P. Wright; Erez Zadok

2004-03-01T23:59:59.000Z

343

Bunker: a privacy-oriented platform for network tracing  

Science Conference Proceedings (OSTI)

ISPs are increasingly reluctant to collect and store raw network traces because they can be used to compromise their customers' privacy. Anonymization techniques mitigate this concern by protecting sensitive information. Trace anonymization can be performed ...

Andrew G. Miklas; Stefan Saroiu; Alec Wolman; Angela Demke Brown

2009-04-01T23:59:59.000Z

344

12.479 Trace-Element Geochemistry, Fall 2006  

E-Print Network (OSTI)

Focuses on element distribution in rocks and minerals using data obtained from natural and experimental systems. Emphasizes models describing trace-element partitioning and applications of trace-element geochemistry to ...

Frey, Frederick August

345

On the privacy risks of publishing anonymized IP network traces  

Science Conference Proceedings (OSTI)

Networking researchers and engineers rely on network packet traces for understanding network behavior, developing models, and evaluating network performance. Although the bulk of published packet traces implement a form of address anonymization to hide ...

D. Koukis; S. Antonatos; K. G. Anagnostakis

2006-10-01T23:59:59.000Z

346

NON INVASIVE ENERGY METER  

POTENTIAL APPLI ATIONS flow systems Fixed and variable liquid flow systems (e.g., solar systems) Energy Measurement TE HNOLOGI AL ENEFITS

347

Development of NIST Standard Reference Materials for Trace ...  

Science Conference Proceedings (OSTI)

... analytical measurements, consideration of suitable packaging, and investigation of ... provides trace levels of the plastic explosive Composition C4 ...

2012-11-16T23:59:59.000Z

348

Conversion of the trace elements Zn, Cd, and Pb in the combustion of near-Moscow coals  

SciTech Connect

A model for the conversion of trace elements in the combustion of near-Moscow coals based on a complex approach combining the capabilities of geochemistry, chemical thermodynamics, phase analysis, and chemical kinetics is proposed. The conversion of the trace elements Zn, Cd, and Pb as the constituents of near-Moscow coal in the flow of coal combustion products along the line of the P-59 boiler at the Ryazanskaya Thermal Power Plant was calculated. Experimental data were used in the development of the model and in calculations.

E.V. Samuilov; L.N. Lebedeva; L.S. Pokrovskaya; M.V. Faminskaya [OAO Power Engineering Institute, Moscow (Russia)

2008-10-15T23:59:59.000Z

349

Trace element speciation under coal fired power station conditions  

Science Conference Proceedings (OSTI)

Coal combustion from power stations is one of the largest contributors of potentially toxic trace elements to the environment. Some trace elements may be released in range of valencies, often with varying toxicity and bioavailability. Hence, determination ... Keywords: arsenic, chromium, coal combustion, mercury, selenium, speciation, trace elements

Pushan Shah; Vladimir Strezov; Peter F. Nelson

2007-05-01T23:59:59.000Z

350

A Tracing Method for Pricing Inter-Area Electricity Trades  

E-Print Network (OSTI)

on the marginal cost pricing ideas of Schweppe et al (1988). By the end of the decade, the US Federal Energy Regulatory Commission was requiring the electricity industry to form regional transmission organisations in order to better co-ordinate trading... to be met from transit charges should equal the ratio of transit flows to transit flows plus home country consumption. This appears to be a reasonable rule of thumb, and the detailed design of a tariff is not the aim of this paper. Instead, we wish to show...

Kattuman, Paul; Green, Richard J; Bialek, Janusz

2004-06-16T23:59:59.000Z

351

TRACE Model for Simulation of Anticipated Transients Without Scram in a BWR  

Science Conference Proceedings (OSTI)

A TRACE model has been developed for using theTRACE/PARCS computational package [1, 2] to simulate anticipated transients without scram (ATWS) events in a boiling water reactor (BWR). The model represents a BWR/5 housed in a Mark II containment. The reactor and the balance of plant systems are modeled in sufficient detail to enable the evaluation of plant responses and theeffectiveness of automatic and operator actions tomitigate this beyond design basis accident.The TRACE model implements features thatfacilitate the simulation of ATWS events initiated by turbine trip and closure of the main steam isolation valves (MSIV). It also incorporates control logic to initiate actions to mitigate the ATWS events, such as water levelcontrol, emergency depressurization, and injection of boron via the standby liquid control system (SLCS). Two different approaches have been used to model boron mixing in the lower plenum of the reactor vessel: modulate coolant flow in the lower plenum by a flow valve, and use control logic to modular.

Cheng L. Y.; Baek J.; Cuadra,A.; Aronson, A.; Diamond, D.; Yarsky, P.

2013-11-10T23:59:59.000Z

352

Ray-tracing Procedural Displacement Shaders  

E-Print Network (OSTI)

Displacement maps and procedural displacement shaders are a widely used approach of specifying geometric detail and increasing the visual complexity of a scene. While it is relatively straightforward to handle displacement shaders in pipeline based rendering systems such as the Reyes-architecture, it is much harder to efficiently integrate displacement-mapped surfaces in ray-tracers. Many commercial ray-tracers tessellate the surface into a multitude of small triangles. This introduces a series of problems such as excessive memory consumption and possibly undetected surface detail. In this paper we describe a novel way of ray-tracing procedural displacement shaders directly, that is, without introducing intermediate geometry. Affine arithmetic is used to compute bounding boxes for the shader over any range in the parameter domain. The method is comparable to the direct ray-tracing of B'ezier surfaces and implicit surfaces using B'ezier clipping and interval methods, respectively. Keyw...

Wolfgang Heidrich; Hans-peter Seidel

1998-01-01T23:59:59.000Z

353

Mass-Loaded Flows  

E-Print Network (OSTI)

A key process within astronomy is the exchange of mass, momentum, and energy between diffuse plasmas in many types of astronomical sources (including planetary nebulae, wind-blown bubbles, supernova remnants, starburst superwinds, and the intracluster medium) and dense, embedded clouds or clumps. This transfer affects the large scale flows of the diffuse plasmas as well as the evolution of the clumps. I review our current understanding of mass-injection processes, and examine intermediate-scale structure and the global effect of mass-loading on a flow. I then discuss mass-loading in a variety of diffuse sources.

J. M. Pittard

2006-07-13T23:59:59.000Z

354

Flow, Li-Air, and Other Batteries  

Science Conference Proceedings (OSTI)

Oct 18, 2011 ... Large-scale energy storage technologies like redox flow batteries have been sought for renewable integration and smart grid applications.

355

Today in Energy - U.S. Energy Information Administration (EIA)  

U.S. Energy Information Administration (EIA)

Energy Information Administration - EIA ... solar, wind, geothermal, ... Electricity tends to flow south in North America.

356

ScalaTrace: Tracing, Analysis and Modeling of HPC Codes at Scale  

Science Conference Proceedings (OSTI)

Characterizing the communication behavior of large-scale applications is a difficult and costly task due to code/system complexity and their long execution times. An alternative to running actual codes is to gather their communication traces and then replay them, which facilitates application tuning and future procurements. While past approaches lacked lossless scalable trace collection, we contribute an approach that provides orders of magnitude smaller, if not near constant-size, communication traces regardless of the number of nodes while preserving structural information. We introduce intra- and inter-node compression techniques of MPI events, we develop a scheme to preserve time and causality of communication events, and we present results of our implementation for BlueGene/L. Given this novel capability, we discuss its impact on communication tuning and on trace extrapolation. To the best of our knowledge, such a concise representation of MPI traces in a scalable manner combined with time-preserving deterministic MPI call replay are without any precedence.

Mueller, F; Wu, X; Schulz, M; de Supinski, B; Gamblin, T

2010-03-31T23:59:59.000Z

357

Energy System Analysis at SINTEF Energy Research  

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

1989. His main areas of work include distributed energy systems, energy system planning, operation and control, ancillary services, frequency and power control, and power flow...

358

FLOW GATING  

DOE Patents (OSTI)

BS>This invention is a fast gating system for eiectronic flipflop circuits. Diodes connect the output of one circuit to the input of another, and the voltage supply for the receiving flip-flop has two alternate levels. When the supply is at its upper level, no current can flow through the diodes, but when the supply is at its lower level, current can flow to set the receiving flip- flop to the same state as that of the circuit to which it is connected. (AEC)

Poppelbaum, W.J.

1962-12-01T23:59:59.000Z

359

Vanadium Redox Flow Batteries  

Science Conference Proceedings (OSTI)

The vanadium redox flow battery, sometimes abbreviated as VRB, is an energy storage technology with significant potential for application in a wide range of contexts. Vanadium redox batteries have already been used in a number of demonstrations in small-scale utility-scale applications, and it is believed that the technology is close to being viable for more widespread use. This report examines the vanadium redox technology, including technical performance and cost issues that drive its application today...

2007-03-30T23:59:59.000Z

360

Flow cytometer  

DOE Patents (OSTI)

A Faraday cage enclosing the flow chamber of a cytometer and ground planes associated with each field deflection plate in concert therewith inhibit electric fields from varying the charge on designated events/droplets and further concentrates and increases forces applied to a charged event passing therethrough for accurate focus thereof while concomitantly inhibiting a potential shock hazard.

van den Engh, Ger (Seattle, WA)

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Flow cytometer  

DOE Patents (OSTI)

A Faraday cage is described which encloses the flow chamber of a cytometer. Ground planes associated with each field deflection plate inhibit electric fields from varying the charge on designated events/droplets and further concentrates. They also increase forces applied to a passing charged event for accurate focus while concomitantly inhibiting a potential shock hazard. 4 figs.

Van den Engh, G.

1995-11-07T23:59:59.000Z

362

Microsoft Word - qs_trace-700_v6-2-4.docx  

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

2.4 2.4 On this page you'll find information about the TRACE 700 version 6.2.4 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings. Date Documentation Received by DOE: 4 November 2009 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements as amplified by Notice 2008-40, Section 4 requirements. (1) The name, address, and (if applicable) web site of the software developer; Trane 3600 Pammel Creek Road La Crosse, WI 54601 http://www.trane.com/trace (2) The name, email address, and telephone number of the person to contact for

363

Tax Deduction Qualified Software: Trace 700 version 6.2.10  

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

2.10 2.10 On this page you'll find information about the TRACE 700 version 6.2.10 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings. Date Documentation Received by DOE: 11 March 2013 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements as amplified by Notice 2008-40, Section 4 requirements. (1) The name, address, and (if applicable) web site of the software developer; Trane 3600 Pammel Creek Road La Crosse, WI 54601 http://www.trane.com/trace (2) The name, email address, and telephone number of the person to contact for

364

Tax Deduction Qualified Software TRACE 700 version 6.3.0  

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

3.0 3.0 On this page you'll find information about the TRACE 700 version 6.3.0 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings. Date Documentation Received by DOE: 11 September 2013 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements as amplified by Notice 2008-40, Section 4 requirements. (1) The name, address, and (if applicable) web site of the software developer; Trane 3600 Pammel Creek Road La Crosse, WI 54601 http://www.trane.com/trace (2) The name, email address, and telephone number of the person to contact for

365

ScalaTrace: Scalable Compression and Replay of Communication Traces for High Performance Computing  

Science Conference Proceedings (OSTI)

Characterizing the communication behavior of large-scale applications is a difficult and costly task due to code/system complexity and long execution times. While many tools to study this behavior have been developed, these approaches either aggregate information in a lossy way through high-level statistics or produce huge trace files that are hard to handle. We contribute an approach that provides orders of magnitude smaller, if not near-constant size, communication traces regardless of the number of nodes while preserving structural information. We introduce intra- and inter-node compression techniques of MPI events that are capable of extracting an application's communication structure. We further present a replay mechanism for the traces generated by our approach and discuss results of our implementation for BlueGene/L. Given this novel capability, we discuss its impact on communication tuning and beyond. To the best of our knowledge, such a concise representation of MPI traces in a scalable manner combined with deterministic MPI call replay are without any precedent.

Noeth, M; Ratn, P; Mueller, F; Schulz, M; de Supinski, B R

2008-05-16T23:59:59.000Z

366

An investigation of the sub-grid variability of trace gases and aerosols for global climate modeling  

Science Conference Proceedings (OSTI)

One fundamental property and limitation of grid based models is their inability to identify spatial details smaller than the grid cell size. While decades of work have gone into developing sub-grid treatments for clouds and land surface processes in climate models, the quantitative understanding of sub-grid processes and variability for aerosols and their precursors is much poorer. In this study, WRF-Chem is used to simulate the trace gases and aerosols over central Mexico during the 2006 MILAGRO field campaign, with multiple spatial resolutions and emission/terrain scenarios. Our analysis focuses on quantifying the sub-grid variability (SGV) of trace gases and aerosols within a typical global climate model grid cell, i.e. 75x75 km2. Our results suggest that a simulation with 3-km horizontal grid spacing adequately reproduces the overall transport and mixing of trace gases and aerosols downwind of Mexico City, while 75-km horizontal grid spacing is insufficient to represent local emission and terrain-induced flows along the mountain ridge, subsequently affecting the transport and mixing of plumes from nearby sources. Therefore, the coarse model grid cell average may not correctly represent aerosol properties measured over polluted areas. Probability density functions (PDFs) for trace gases and aerosols show that secondary trace gases and aerosols, such as O3, sulfate, ammonium, and nitrate, are more likely to have a relatively uniform probability distribution (i.e. smaller SGV) over a narrow range of concentration values. Mostly inert and long-lived trace gases and aerosols, such as CO and BC, are more likely to have broad and skewed distributions (i.e. larger SGV) over polluted regions. Over remote areas, all trace gases and aerosols are more uniformly distributed compared to polluted areas. Both CO and O3 SGV vertical profiles are nearly constant within the PBL during daytime, indicating that trace gases are very efficiently transported and mixed vertically by turbulence. But, simulated horizontal variability indicates that trace gases and aerosols are not well mixed horizontally in the PBL. During nighttime the SGV for trace gases is maximum at the surface, and quickly decreases with height. Unlike the trace gases, the SGV of BC and secondary aerosols reaches a maximum at the PBL top during the day. The SGV decreases with distance away from the polluted urban area, has a more rapid decrease for long-lived trace gases and aerosols than for secondary ones, and is greater during daytime than nighttime. The SGV of trace gases and aerosols is generally larger than for meteorological quantities. Emissions can account for up to 50% of the SGV over urban areas such as Mexico City during daytime for less-reactive trace gases and aerosols, such as CO and BC. The impact of emission spatial variability on SGV decays with altitude in the PBL and is insignificant in the free troposphere. The emission variability affects SGV more significantly during daytime (rather than nighttime) and over urban (rather than rural or remote) areas. The terrain, through its impact on meteorological fields such as wind and the PBL structure, affects dispersion and transport of trace gases and aerosols and their SGV.

Qian, Yun; Gustafson, William I.; Fast, Jerome D.

2010-07-29T23:59:59.000Z

367

Trace metals in sediments of coastal Siberia  

E-Print Network (OSTI)

For the work described in this thesis, a total of 218 samples from 104 cores from the East Siberian, Laptev, Kara, and Pechora Seas and the Ob and Yenisei Rivers were analyzed for the trace metals Ag, As, Ba, Cd, Cr, Cu, Fe, Hg, Ni, Pb, Sb, and Zn. To make comparisons between locations easier, the concentration of all elements was normalized to Fe to account for variability in grain size and mineralogy. For the metals Ag, Cd, and Hg there was poor correlation with Fe, likely partially due to analytical variations caused by the low concentrations of these elements. Copper, Ni and Zn showed good correlation with Fe, suggesting these elements are from natural inputs to the sediments. Arsenic, Ba, Cr, Pb, and Sb showed variable correlations, suggesting a more mafic (basaltic) mineral phase at some locations and/or diagenetic redistribution of these metals. No statistically significant differences were found between metal to Fe ratios at the surface (0-2.5 cm) of the sediment cores and the bottoms (5- 1 00 cm), with a few exceptions. There was also no statistically significant difference in the average metal to Fe ratios of the East Siberian and Laptev Seas. There was, however, a significant difference when these two seas were compared to the Kara and Pechora Seas, suggesting different mineralogy in the drainage basins of eastern and western Siberia. Sediment from the Kara Sea was similar in trace metal concentration to sediment from its likely source, the Ob and Yenisei rivers.

Esnough, Teresa Elizabeth

1996-01-01T23:59:59.000Z

368

TRACE/PARCS Core Modeling of a BWR/5 for Accident Analysis of ATWS Events  

Science Conference Proceedings (OSTI)

The TRACE/PARCS computational package [1, 2] isdesigned to be applicable to the analysis of light water reactor operational transients and accidents where the coupling between the neutron kinetics (PARCS) and the thermal-hydraulics and thermal-mechanics (TRACE) is important. TRACE/PARCS has been assessed for itsapplicability to anticipated transients without scram(ATWS) [3]. The challenge, addressed in this study, is to develop a sufficiently rigorous input model that would be acceptable for use in ATWS analysis. Two types of ATWS events were of interest, a turbine trip and a closure of main steam isolation valves (MSIVs). In the first type, initiated by turbine trip, the concern is that the core will become unstable and large power oscillations will occur. In the second type,initiated by MSIV closure,, the concern is the amount of energy being placed into containment and the resulting emergency depressurization. Two separate TRACE/PARCS models of a BWR/5 were developed to analyze these ATWS events at MELLLA+ (maximum extended load line limit plus)operating conditions. One model [4] was used for analysis of ATWS events leading to instability (ATWS-I);the other [5] for ATWS events leading to emergency depressurization (ATWS-ED). Both models included a large portion of the nuclear steam supply system and controls, and a detailed core model, presented henceforth.

Cuadra A.; Baek J.; Cheng, L.; Aronson, A.; Diamond, D.; Yarsky, P.

2013-11-10T23:59:59.000Z

369

Energy Basics: Industrial Energy Efficiency  

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

fuels supplied to a manufacturing plant from off-site power plants, gas companies, and fuel distributors. Energy then flows to either a central energy generation utility system or...

370

Compile-Time Compaction Of Traces For Memory Simulation  

E-Print Network (OSTI)

This thesis examines compile-time compaction of program execution traces. It presents a new method for compacting traces for memory simulation. Further, it describes a tool prototype that implements the method. Experiments with the tool prototype show that the new method reduces the time needed in simulating the operation of memories. Memory simulation is needed in the performance analysis and in the design of programs. In high performance applications, the data transfer between different layers of memory is one of the main bottlenecks. A program execution trace is a list of memory references. Using traces as simulation inputs is a flexible way of analyzing the memory perfor...

Vesa Hirvisalo; Vesa Hirvisalo; Dr. Tech Esko Nuutila

1998-01-01T23:59:59.000Z

371

Leaching of Trace Elements From Highway Materials Stabilized ...  

Leaching of Trace Elements From Highway Materials Stabilized with Coal Fly Ash Craig H. Benson, PhD, PE Professor, Geo Engineering Program Dept. of ...

372

Graphics: Atmospheric Trace Gases in Whole-Air Samples  

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

Graphics graphics Graphics: Atmospheric Trace Gases in Whole-Air Samples The following links are for methane, nonmethane hydrocarbons, alkyl nitrates, and chlorinated carbon...

373

Coal flows | OpenEI  

Open Energy Info (EERE)

Coal flows Coal flows Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 142, and contains only the reference case. The dataset uses million short tons. The data is broken down into steam coal exports to Europe, Asia and America. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO Coal flows countries EIA exporting importing Data application/vnd.ms-excel icon AEO2011: World Steam Coal Flows By Importing Regions and Exporting Countries- Reference Case (xls, 103.7 KiB) Quality Metrics Level of Review Peer Reviewed Comment Temporal and Spatial Coverage Frequency Annually Time Period 2008-2035 License

374

The Use of Finite-Volume Methods for Atmospheric Advection of Trace Species. Part I: Test of Various Formulations in a General Circulation Model  

Science Conference Proceedings (OSTI)

In the context of advection of trace species by 3D atmospheric flows, a comparative test of a hierarchy of finite volume transport schemes initially derived by B. Van Leer is presented. Those schemes are conservative by construction and Van Leer ...

Frdric Hourdin; Alexandre Armengaud

1999-05-01T23:59:59.000Z

375

Internal WaveWave Interactions. Part II: Spectral Energy Transfer and Turbulence Production  

Science Conference Proceedings (OSTI)

The spectral transfer of internal wave energy toward high vertical wavenumber kz and turbulence production ? is examined by ray tracing small-scale test waves in a canonical Garrett and Munk background wave field. Unlike previous ray-tracing ...

Haili Sun; Eric Kunze

1999-11-01T23:59:59.000Z

376

Simulation of a main steam line break with steam generator tube rupture using trace  

Science Conference Proceedings (OSTI)

A simulation of the OECD/NEA ROSA-2 Project Test 5 was made with the thermal-hydraulic code TRACE5. Test 5 performed in the Large Scale Test Facility (LSTF) reproduced a Main Steam Line Break (MSLB) with a Steam Generator Tube Rupture (SGTR) in a Pressurized Water Reactor (PWR). The result of these simultaneous breaks is a depressurization in the secondary and primary system in loop B because both systems are connected through the SGTR. Good approximation was obtained between TRACE5 results and experimental data. TRACE5 reproduces qualitatively the phenomena that occur in this transient: primary pressure falls after the break, stagnation of the pressure after the opening of the relief valve of the intact steam generator, the pressure falls after the two openings of the PORV and the recovery of the liquid level in the pressurizer after each closure of the PORV. Furthermore, a sensitivity analysis has been performed to know the effect of varying the High Pressure Injection (HPI) flow rate in both loops on the system pressures evolution. (authors)

Gallardo, S.; Querol, A.; Verdu, G. [Departamento de Ingenieria Quimica Y Nuclear, Universitat Politecnica de Valencia, Camino de Vera s/n, 46022, Valencia (Spain)

2012-07-01T23:59:59.000Z

377

Comparison of an impedance heating system to mineral insulated heat trace for power tower applications  

DOE Green Energy (OSTI)

A non-conventional type of heating system is being tested at Sandia National Laboratories for solar thermal power tower applications. In this system, called impedance heating, electric current flows directly through the pipe to maintain the desired temperature. The pipe becomes the resistor where the heat is generated. Impedance heating has many advantages over previously used mineral insulated (MI) heat trace. An impedance heating system should be much more reliable than heat trace cable since delicate junctions and cabling are not used and the main component, a transformer, is inherently reliable. A big advantage of impedance heating is the system can be sized to rapidly heat up the piping to provide rapid response times necessary in cyclic power plants such as solar power towers. In this paper, experimental results from testing an impedance heating system are compared to MI heat trace. The authors found impedance heating was able to heat piping rapidly and effectively. There were not significant stray currents and impedance heating did not affect instrumentation.

Pacheco, J.E.; Kolb, W.J.

1997-03-01T23:59:59.000Z

378

Microhydropower | Department of Energy  

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

for farms, ranches, homes, and villages. How a Microhydropower System Works All hydropower systems use the energy of flowing water to produce electricity or mechanical energy....

379

Emission Factors Handbook Addendum 2: Guidelines for Estimating Trace Substance Emissions from Fossil Fuel Steam Electric Power Plan ts  

Science Conference Proceedings (OSTI)

This handbook provides a tool for estimating trace substances emissions from fossil-fuel-fired power plants. The suggested emission factors are based on EPRI and U.S. Department of Energy (DOE) field measurements conducted at 51 power plants using generally consistent sampling and analytical protocols. This information will help utility personnel estimate air toxic emissions for permitting purposes.

2000-12-22T23:59:59.000Z

380

Autonomous microexplosives subsurface tracing system final report.  

SciTech Connect

The objective of the autonomous micro-explosive subsurface tracing system is to image the location and geometry of hydraulically induced fractures in subsurface petroleum reservoirs. This system is based on the insertion of a swarm of autonomous micro-explosive packages during the fracturing process, with subsequent triggering of the energetic material to create an array of micro-seismic sources that can be detected and analyzed using existing seismic receiver arrays and analysis software. The project included investigations of energetic mixtures, triggering systems, package size and shape, and seismic output. Given the current absence of any technology capable of such high resolution mapping of subsurface structures, this technology has the potential for major impact on petroleum industry, which spends approximately $1 billion dollar per year on hydraulic fracturing operations in the United States alone.

Engler, Bruce Phillip; Nogan, John; Melof, Brian Matthew; Uhl, James Eugene; Dulleck, George R., Jr.; Ingram, Brian V.; Grubelich, Mark Charles; Rivas, Raul R.; Cooper, Paul W.; Warpinski, Norman Raymond; Kravitz, Stanley H.

2004-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Energy  

Site Map; Printable Version; Share this resource. Send a link to Full Size Image - Energy Innovation Portalto someone by E-mail; Share Full Size Image - Energy ...

382

Solar Tracing Sensors for Maximum Solar Concentrator ...  

Concentrating Solar Power (CSP) relies on thermodynamic processes to convert concentrated light into useful forms of energy. Accurate sun tracking ...

383

Automotive soiling simulation based on massive particle tracing  

Science Conference Proceedings (OSTI)

In the automotive industry Lattice-Boltzmann type flow solvers like PowerFlow from Exa Corporation are becoming increasingly important. In contrast to the traditional finite volume approach PowerFlow utilizes a hierachical cartesian grid for flow simulation. ...

Stefan Roettger; Martin Schulz; Wolf Bartelheimer; Thomas Ertl

2001-05-01T23:59:59.000Z

384

Compact, fast and robust grids for ray tracing  

Science Conference Proceedings (OSTI)

The focus of research in acceleration structures for ray tracing recently shifted from render time to time to image, the sum of build time and render time, and also the memory footprint of acceleration structures now receives more attention. In this ... Keywords: acceleration structure, grid, perfect hashing, ray tracing, row displacement compression

Ares Lagae; Philip Dutr

2008-06-01T23:59:59.000Z

385

Effect of Trace Elements on Anaerobic Digestion of Coking Wastewater  

Science Conference Proceedings (OSTI)

The pretreatment of coking wastewater using ASBR was conducted at 35? in this paper. The addition of trace elements to the anaerobic reactor has positive effect on the anaerobic treatment of coking wastewater, but too much or too little of it will ... Keywords: trace elements, anaerobic digestion, coking wastewater

Yu-ying Li; Bing Li

2009-10-01T23:59:59.000Z

386

BorderPatrol: isolating events for black-box tracing  

Science Conference Proceedings (OSTI)

Causal request traces are valuable to developers of large concurrent and distributed applications, yet difficult to obtain. Traces show how a request is processed, and can be analyzed by tools to detect performance or correctness errors and anomalous ... Keywords: black box systems, causal paths, distributed systems, performance analysis, performance debugging

Eric Koskinen; John Jannotti

2008-04-01T23:59:59.000Z

387

A Beginner's Guide to the Use of the TRACE Program  

Science Conference Proceedings (OSTI)

With deregulation increasing the number of bulk power transfers, more utility planners will be evaluating multi-area power transfer capability with programs such as EPRI's Transfer Capability Evaluation (TRACE). This manual will help TRACE users, particularly first-time users, develop their expertise with this sophisticated application.

1997-05-30T23:59:59.000Z

388

RPU: a programmable ray processing unit for realtime ray tracing  

Science Conference Proceedings (OSTI)

Recursive ray tracing is a simple yet powerful and general approach for accurately computing global light transport and rendering high quality images. While recent algorithmic improvements and optimized parallel software implementations have increased ... Keywords: hardware architecture, programmable shading, ray processing unit, ray tracing

Sven Woop; Jrg Schmittler; Philipp Slusallek

2005-07-01T23:59:59.000Z

389

Naive ray-tracing: A divide-and-conquer approach  

Science Conference Proceedings (OSTI)

We present an efficient ray-tracing algorithm which, for the first time, does not store any data structures when performing spatial subdivisions, and directly computes intersections inside the scene. This new algorithm is often faster than comparable ... Keywords: Ray tracing, divide-and-conquer, global illumination, rendering

Benjamin Mora

2011-10-01T23:59:59.000Z

390

EnergyPlus Analysis Capabilities for Use in California Building Energy Efficiency Standards Development and Compliance Calculations  

E-Print Network (OSTI)

7 Variable Refrigerant Flowto EnergyPlus. Variable Refrigerant Flow Systems The ACMcapability to model variable refrigerant flow (VRF) systems

Hong, Tianzhen

2009-01-01T23:59:59.000Z

391

Energy Perspectives, Total Energy - Energy Information Administration  

Gasoline and Diesel Fuel Update (EIA)

Total Energy Total Energy Glossary › FAQS › Overview Data Monthly Annual Analysis & Projections this will be filled with a highchart PREVIOUSNEXT Energy Perspectives 1949-2011 September 2012 PDF | previous editions Release Date: September 27, 2012 Introduction Energy Perspectives is a graphical overview of energy history in the United States. The 42 graphs shown here reveal sweeping trends related to the Nation's production, consumption, and trade of energy from 1949 through 2011. Energy Flow, 2011 (Quadrillion Btu) Total Energy Flow diagram image For footnotes see here. Energy can be grouped into three broad categories. First, and by far the largest, is the fossil fuels-coal, petroleum, and natural gas. Fossil fuels have stored the sun's energy over millennia past, and it is primarily

392

Tracing Aerosol Impacts on South Asian Monsoons | U.S. DOE Office of  

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

Science Highlights » 2013 Science Highlights » 2013 » Tracing Aerosol Impacts on South Asian Monsoons Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) News & Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3251 F: (301) 903-5051 E: sc.ber@science.doe.gov More Information » September 2013 Tracing Aerosol Impacts on South Asian Monsoons The effect of pollution aerosols on monsoons. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo

393

Soluble Lead Flow Battery: Soluble Lead Flow Battery Technology  

SciTech Connect

GRIDS Project: General Atomics is developing a flow battery technology based on chemistry similar to that used in the traditional lead-acid battery found in nearly every car on the road today. Flow batteries store energy in chemicals that are held in tanks outside the battery. When the energy is needed, the chemicals are pumped through the battery. Using the same basic chemistry as a traditional battery but storing its energy outside of the cell allows for the use of very low cost materials. The goal is to develop a system that is far more durable than todays lead-acid batteries, can be scaled to deliver megawatts of power, and which lowers the cost of energy storage below $100 per kilowatt hour.

None

2010-09-01T23:59:59.000Z

394

Energy Blog | Department of Energy  

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

20, 2010 20, 2010 Saving Energy in Altoona Where it Counts: City Lights That's why their first priority after receiving a $205,700 Energy Efficiency and Conservation Block Grant (EECBG) was to replace 169 downtown streetlights with energy-efficient LED units. Funded as part of the American Recovery and Reinvestment Act (ARRA), the project also gives Altoona a much brighter appearance when the sun goes down.The city of Altoona, Pa. can trace 85 percent of its energy costs back to one area: lights. July 20, 2010 Clean Energy Ministerial: Join the Discussion Today marks the second and final day of the world's first Clean Energy Ministerial, which brings together ministers from 23 countries who represent more than 80 percent of the world's energy use and clean energy

395

Using RFID for tracing cumulated resources and emissions in supply chain  

Science Conference Proceedings (OSTI)

The tracing of resources and emissions has been recognised increasingly important in supply chains. The developed traceability graph enables tracing of information associated with products and their parts. Tracing in a supply chain requires the three ...

Marko Junkkari; Antti Sirkka

2011-11-01T23:59:59.000Z

396

Improved Fluid Flow Measurements: Feedwater Flow  

Science Conference Proceedings (OSTI)

This report describes the combined results of a utility survey and site visits concerning feedwater flow measurement in fossil-fueled power plants. In addition, a summary is provided of the technologies available to measure the volumetric feedwater flow rate in plants. This volumetric flow rate can be converted to a mass flow rate by knowing the pressure and temperature of the flow media. Velocity meters, differential pressure meters, and other closed-conduit flowmeters are discussed along with ...

2012-11-28T23:59:59.000Z

397

Trace Assessment for BWR ATWS Analysis  

SciTech Connect

A TRACE/PARCS input model has been developed in order to be able to analyze anticipated transients without scram (ATWS) in a boiling water reactor. The model is based on one developed previously for the Browns Ferry reactor for doing loss-of-coolant accident analysis. This model was updated by adding the control systems needed for ATWS and a core model using PARCS. The control systems were based on models previously developed for the TRAC-B code. The PARCS model is based on information (e.g., exposure and moderator density (void) history distributions) obtained from General Electric Hitachi and cross sections for GE14 fuel obtained from an independent source. The model is able to calculate an ATWS, initiated by the closure of main steam isolation valves, with recirculation pump trip, water level control, injection of borated water from the standby liquid control system and actuation of the automatic depres-surization system. The model is not considered complete and recommendations are made on how it should be improved.

Cheng, L.Y.; Diamond, D.; Arantxa Cuadra, Gilad Raitses, Arnold Aronson

2010-04-22T23:59:59.000Z

398

Tracing the Impact of Bank Liquidity Shocks  

E-Print Network (OSTI)

While bank lending may fall in response to shocks to their liquidity, to what extent are such shocks transmitted to borrowing rms? Tracing such transmission mechanisms has proven di cult in the past due to a lack of micro data linking banks to borrowing rms and identication concerns. This paper uses dierential liquidity shocks arising from unanticipated nuclear tests in Pakistan in 1998, and a dataset linking over 18; 000 rms to all 145 banks to understand the full transmission mechanism. We isolate the causal impact of the bank lending channel by showing that for the same rm borrowing from two dierent banks, its loan from the bank experiencing a 1 % larger decline in liquidity drops by an additional 0.6%. The liquidity shock also leads to large declines in the probability of continued lending to old clients, and extending credit to new ones. However, we nd that rms dier in their ability to compensate the bank lending channel shock. Larger rms, while also facing a bank lending channel, are able to oset the adverse eect by borrowing more from more liquid banks. Smaller rms on the other hand are entiely unable to hedge out the bank lending channels. Consequently, a negative bank liquidity shock increases the

Asim Ijaz Khwaja; Atif Mian

2006-01-01T23:59:59.000Z

399

Application of direct-fitting, mass-integral, and multi-rate methods to analysis of flowing fluid electric conductivity logs from Horonobe, Japan  

E-Print Network (OSTI)

traces of drilling mud) and formation fluid flowing into theof drilling mud in the wellbore may impact fluid logging twodrilling mud itself is presumably significantly denser than formation fluid,

Doughty, C.; Tsang, C.-F.; Hatanaka, K.; Yabuuchi, S.; Kurikami, H.

2008-01-01T23:59:59.000Z

400

CWRU awarded grant to build battery for smart grid, renewables New design for iron flow battery would enhance energy and economic security  

E-Print Network (OSTI)

CWRU awarded grant to build battery for smart grid, renewables New design for iron flow battery of the rustbelt battery could be integrated into a smart grid--charging up when use is low, then adding of the power grid and accelerate the addition of solar and wind power supplies. The project was one of 66

Rollins, Andrew M.

Note: This page contains sample records for the topic "traces energy flows" 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

Energy  

Science Conference Proceedings (OSTI)

Energy. Summary: Key metrologies/systems: Scanning tunneling microscopy and one- and two-photon photoemission/Model ...

2012-10-02T23:59:59.000Z

402

Energy  

Home. Site Map; Printable Version; Share this resource. About; Search; Categories (15) Advanced Materials; Biomass and Biofuels; Building Energy Efficiency ...

403

Lattice splitting under intermittent flows  

E-Print Network (OSTI)

We study the splitting of regular square lattices subject to stochastic intermittent flows. By extensive Monte Carlo simulations we reveal how the time span until the occurence of a splitting depends on various flow patterns imposed on the lattices. Increasing the flow fluctuation frequencies shortens this time span which reaches a minimum before rising again due to inertia effects incorporated in the model. The size of the largest connected component after the splitting is rather independent of the flow fluctuations but sligthly decreases with the link capacities. Our results are relevant for assessing the robustness of real-life systems, such as electric power grids with a large share of renewable energy sources including wind turbines and photovoltaic systems.

Schlpfer, Markus

2010-01-01T23:59:59.000Z

404

Algorithms and analysis for underwater vehicle plume tracing.  

SciTech Connect

The goal of this research was to develop and demonstrate cooperative 3-D plume tracing algorithms for miniature autonomous underwater vehicles. Applications for this technology include Lost Asset and Survivor Location Systems (L-SALS) and Ship-in-Port Patrol and Protection (SP3). This research was a joint effort that included Nekton Research, LLC, Sandia National Laboratories, and Texas A&M University. Nekton Research developed the miniature autonomous underwater vehicles while Sandia and Texas A&M developed the 3-D plume tracing algorithms. This report describes the plume tracing algorithm and presents test results from successful underwater testing with pseudo-plume sources.

Byrne, Raymond Harry; Savage, Elizabeth L. (Texas A& M University, College Station, TX); Hurtado, John Edward (Texas A& M University, College Station, TX); Eskridge, Steven E.

2003-07-01T23:59:59.000Z

405

The Algorithmic Beauty of Traces Using L-systems to Hilight Patterns ...  

E-Print Network (OSTI)

Nov 19, 1997 ... Characteristics of truth tables Visualization of truth tables L-systems Visualization and observations on traces A strategy for the 3-trace case.

406

Redox flow batteries: a review  

Science Conference Proceedings (OSTI)

Redox flow batteries (RFBs) are enjoying a renaissance due to their ability to store large amounts of electrical energy relatively cheaply and efficiently. In this review, we examine the components of RFBs with a focus on understanding the underlying physical processes. The various transport and kinetic phenomena are discussed along with the most common redox couples.

Weber, Adam Z. [Lawrence Berkeley National Laboratory (LBNL); Mench, Matthew M [ORNL; Meyers, Jeremy [University of Texas, Austin; Ross, Philip N. [Lawrence Berkeley National Laboratory (LBNL); Gostick, Jeffrey T. [McGill University, Montreal, Quebec; Liu, Qinghua [University of Tennessee, Knoxville (UTK)

2011-01-01T23:59:59.000Z

407

Diagram 5. Electricity Flow, 2007 (Quadrillion Btu)  

E-Print Network (OSTI)

generation. f Transmission and distribution losses (electricity losses that occur between the pointDiagram 5. Electricity Flow, 2007 (Quadrillion Btu) Energy Information Administration / Annual Energy Review 2007 221 Coal 20.99 Nuclear Electric Power 8.41 Energy Consumed To Generate Electricity 42

Bensel, Terrence G.

408

Impact of Flow Control and Tax Reform on Ownership and Growth in the U.S. Waste-to-Energy Industry  

Reports and Publications (EIA)

This article analyzes two key issues that could be influencing growth and ownership (both public and private) in the Waste To Energy (WTE) industry.

Information Center

1994-09-01T23:59:59.000Z

409

The gradient flow in a twisted box  

E-Print Network (OSTI)

We study the perturbative behavior of the gradient flow in a twisted box. We apply this information to define a running coupling using the energy density of the flow field. We study the step-scaling function and the size of cutoff effects in SU(2) pure gauge theory. We conclude that the twisted gradient flow running coupling scheme is a valid strategy for step-scaling purposes due to the relatively mild cutoff effects and high precision.

Ramos, A

2013-01-01T23:59:59.000Z

410

Hospital Energy Benchmarking Guidance - Version 1.0  

E-Print Network (OSTI)

use attribution to thermal services (cooling, space heating,a. Identify thermal energy flows (cooling, space heating,s). 1a. Identify thermal energy flows (cooling, heating,

Singer, Brett C.

2010-01-01T23:59:59.000Z

411

Benton PUD - Commercial and Agricultural Energy Efficiency Rebate...  

Open Energy Info (EERE)

customers for making energy improvements to sprinkling systems. The Low Flow Pre-Rinse Spray Rebate also provides for complimentary installations of energy efficient low-flow pre...

412

Renewables for Energy Conservation  

E-Print Network (OSTI)

) Massflowrate(kg/h) Hot Water Usage Patterns Selected #12;Monthly variation in energy requirement for electricalRenewables for Energy Conservation Rangan Banerjee Energy Systems Engineering IIT Bombay National Conference on "Energy Efficiency", Pune , 28th June2005 #12;ENERGY FLOW DIAGRAM PRIMARY ENERGY ENERGY

Banerjee, Rangan

413

Analytical solution for two-phase flow in a wellbore using the drift-flux model  

E-Print Network (OSTI)

Wellbore flow model for carbon dioxide and brine, EnergyReservoir Flow of Carbon Dioxide and Water. LBNL-4291E. [14]non-isothermal flow of carbon dioxide in wellbores. In: SPE

Pan, L.

2013-01-01T23:59:59.000Z

414

Halocarbon and Other Atmospheric Trace Species (HATS) | Data.gov  

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

Halocarbon and Other Atmospheric Trace Species (HATS) Halocarbon and Other Atmospheric Trace Species (HATS) Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data Halocarbon and Other Atmospheric Trace Species (HATS) Dataset Summary Description The general mission of the Halocarbons and other Atmospheric Trace Species group is to quantify the distributions and magnitudes of sources and sinks for atmospheric nitrous oxide (N2O) and halogen containing compounds. HATS utilizes numerous types of platforms, including ground-based stations, towers, ocean vessels, aircraft, and balloons, to accomplish its mission. For a detailed mission statement, consult our FAQ. Tags {"nitrous oxide","sulfur hexaflouride",CFC-11,CFC-12,CFC-113,CCl4,CH3CCl3,CH3Cl,halon-1211,HCFC-22,HCFC-142b,halocarbons,chromatograph,aircraft,balloons,vessels,ships,towers,"natural resources",environment,air,"GHG "}

415

Interannual Variability of Trace Gases in the Subtropical Winter Stratosphere  

Science Conference Proceedings (OSTI)

Measurements of water vapor and methane from the Halogen Occultation Experiment instrument on board the Upper Atmosphere Research Satellite are used to study the interannual variability of trace gas distributions in the atmosphere. Particular ...

L. J. Gray; J. M. Russell Jr.

1999-04-01T23:59:59.000Z

416

Traces generation to simulate large-scale distributed applications  

Science Conference Proceedings (OSTI)

In order to study the performance of scheduling algorithms, simulators of parallel and distributed applications need accurate models of the application's behavior during execution. For this purpose, traces of low-level events collected during the actual ...

Olivier Dalle; Emilio P. Mancini

2011-12-01T23:59:59.000Z

417

Heterogeneity and dynamicity of clouds at scale: Google trace analysis  

Science Conference Proceedings (OSTI)

To better understand the challenges in developing effective cloud-based resource schedulers, we analyze the first publicly available trace data from a sizable multi-purpose cluster. The most notable workload characteristic is heterogeneity: in resource ...

Charles Reiss; Alexey Tumanov; Gregory R. Ganger; Randy H. Katz; Michael A. Kozuch

2012-10-01T23:59:59.000Z

418

Laboratory measurements and modeling of trace atmospheric species  

E-Print Network (OSTI)

Trace species play a major role in many physical and chemical processes in the atmosphere. Improving our understanding of the impact of each species requires a combination of laboratory exper- imentation, field measurements, ...

Sheehy, Philip M. (Philip Michael)

2005-01-01T23:59:59.000Z

419

High quality rendering using ray tracing and photon mapping  

Science Conference Proceedings (OSTI)

Ray tracing and photon mapping provide a practical way of efficiently simulating global illumination including interreflections, caustics, color bleeding, participating media and subsurface scattering in scenes with complicated geometry and advanced ...

Henrik Wann Jensen; Per Christensen

2007-08-01T23:59:59.000Z

420

A strategy for the 3-trace case - CECM  

E-Print Network (OSTI)

Nov 19, 1997 ... Figure 10 shows a 3-trace on 4-atom truth table and its correspondence as an L- system. Again transitions form 1's to 0's are highlighted. Similar...

Note: This page contains sample records for the topic "traces energy flows" 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

Agent-based chemical plume tracing using fluid dynamics  

Science Conference Proceedings (OSTI)

This paper presents a rigorous evaluation of a novel, distributed chemical plume tracing algorithm. The algorithm is a combination of the best aspects of the two most popular predecessors for this task. Furthermore, it is based on solid, formal principles ...

Dimitri Zarzhitsky; Diana Spears; David Thayer; William Spears

2004-04-01T23:59:59.000Z

422

POWER FLOW ANALYSIS OF ELECTROSTRICTIVE ACTUATORS DRIVEN BYSWITCHMODE AMPLIFIERS  

E-Print Network (OSTI)

is within the bandwidth of the amplifier. This analysis also reveals that the electrical power flow through of that energy. We adopt this view in this paper. The analysis in this paper is motivated by the smart skin being Consider the flow of energy through this smart skin. Electrical energy is supplied to the smart skin from

Lindner, Douglas K.

423

The Pandora Particle Flow Algorithm  

E-Print Network (OSTI)

A high-energy e+e- collider, such as the ILC or CLIC, is arguably the best option to complement and extend the LHC physics programme. A lepton collider will allow for exploration of Standard Model Physics, such as precise measurements of the Higgs, top and gauge sectors, in addition to enabling a multitude of New Physics searches. However, physics analyses at such a collider will place unprecedented demands on calorimetry, with a required jet energy resolution of \\sigma(E)/E energy resolution by fully reconstructing the paths of individual particles through the detector. The energies of charged particles can then be extracted from precise inner detector tracker measurements, whilst photon energies will be measured in the ECAL, and only neutral hadron energies (10% of jet energies) will be measured in the HCAL, largely avoiding the typically poor HCAL resolution. This document introduces the Pandora particle flow algorithms, which offer the current state of the art in particle flow calorimetry for the ILC and CLIC. The performance of the algorithms is investigated by examining the reconstructed jet energy resolution and the ability to separate the hadronic decays of W and Z bosons.

J. S. Marshall; M. A. Thomson

2013-08-21T23:59:59.000Z

424

Trace Impurities and Activation Products in Base Metals  

Science Conference Proceedings (OSTI)

This report documents the results of research related to the concentrations of trace impurities and activation products in stainless steel alloys used for reactor vessels and internals. While present in extremely low concentrations, these trace elements and radionuclides can impact radioactive waste disposal of the components upon decommissioning.BackgroundThe primary basis of activity in a decommissioning source term is activated metals from the reactor and ...

2012-10-30T23:59:59.000Z

425

Energy  

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

Energy Energy Energy Express Licensing Accelerator-Driven Transmutation Of Spent Fuel Elements Express Licensing Acid-catalyzed dehydrogenation of amine-boranes Express Licensing Air Breathing Direct Methanol Fuel Cell Express Licensing Aligned Crystalline Semiconducting Film On A Glass Substrate And Method Of Making Express Licensing Anion-Conducting Polymer, Composition, And Membrane Express Licensing Apparatus for Producing Voltage and Current Pulses Express Licensing Biaxially oriented film on flexible polymeric substrate Express Licensing Corrosion Test Cell For Bipolar Plates Express Licensing Device for hydrogen separation and method Negotiable Licensing Durable Fuel Cell Membrane Electrode Assembly (MEA) Express Licensing Energy Efficient Synthesis Of Boranes Express Licensing

426

Energy  

Science Conference Proceedings (OSTI)

There has been a significant progress in converting solar energy using silicon technology to replace fossil fuels. However, its high cost of production has led...

427

Energy  

Efficient, Low-cost Microchannel Heat Exchanger. Return to Marketing Summary. Skip footer navigation to end of page. ... Energy Innovation Portal on Facebook;

428

Energy  

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

energy, including Fundamental advances in nuclear fuels Nonproliferation safeguards Reactor concepts Reactor waste disposition Animation of new reactor concept for deep space...

429

A flow injection trace gas analyzer for on-site determination of organoarsenicals  

DOE Patents (OSTI)

Lewisite was developed during World War I as a chemical warfare agent. Several countries produced large quantities of the agent before, during and after World War II. The Chemical Weapons Convention treaty, recently signed, requires the destruction of Lewisite. In implementing the Chemical Weapons Convention treaty, it will be necessary to monitor the facilities at which various chemical agents including Lewisite may be stored for compliance with the agreement. The inspection procedures must meet stringent standards for safety, quality assurance and accountability. In preparing for these inspections a technology gap has been identified in the ability to detect and monitor for the presence of Lewisite in ambient air, particularly in the facilities where chemical warfare agents are stored. A method and an apparatus for determining the concentration of Lewisite in the ambient atmosphere are described. The apparatus includes a mechanism for separating and collecting a Lewisite sample from the atmosphere, a mechanism for converting the collected Lewisite to an arsenite ion solution sample, and a mechanism for electrochemically detecting the converted arsenite ions in the sample, whereby the amount of arsenite ions detected is proportional to the concentration of Lewisite in the atmosphere.

Aldstadt, J.H. III

1995-12-31T23:59:59.000Z

430

Oxygen Absorption in Cooling Flows  

E-Print Network (OSTI)

The inhomogeneous cooling flow scenario predicts the existence of large quantities of gas in massive elliptical galaxies, groups, and clusters that have cooled and dropped out of the flow. Using spatially resolved, deprojected X-ray spectra from the ROSAT PSPC we have detected strong absorption over energies ~0.4-0.8 keV intrinsic to the central ~1 arcmin of the galaxy, NGC 1399, the group, NGC 5044, and the cluster, A1795. These systems have amongst the largest nearby cooling flows in their respective classes and low Galactic columns. Since no excess absorption is indicated for energies below ~0.4 keV the most reasonable model for the absorber is warm, collisionally ionized gas with T=10^{5-6} K where ionized states of oxygen provide most of the absorption. Attributing the absorption only to ionized gas reconciles the large columns of cold H and He inferred from Einstein and ASCA with the lack of such columns inferred from ROSAT, and also is consistent with the negligible atomic and molecular H inferred from HI, and CO observations of cooling flows. The prediction of warm ionized gas as the product of mass drop-out in these and other cooling flows can be verified by Chandra, XMM, and ASTRO-E.

David A. Buote

2000-01-19T23:59:59.000Z

431

Geothermal Technologies - Energy Innovation Portal  

Solar Thermal; Startup America; ... Modeling Fluid and Heat Flow in Porous and Fractured Ground ... Building Energy Efficiency

432

Today in Energy - U.S. Energy Information Administration (EIA)  

U.S. Energy Information Administration (EIA)

Energy Perspectives: The United States has a varied and complex energy flow chart. December 3, 2012 EIA projects little change in U.S. coal production in 2013 .

433

Today in Energy - Archive - U.S. Energy Information Administration ...  

U.S. Energy Information Administration (EIA)

Energy Perspectives: The United States has a varied and complex energy flow chart. December 11, 2012 Fluid catalytic cracking is an important step in producing gasoline.

434

Vilnius Energy Secretary Conference 2007: Responsible Energy...  

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

energy development has long been to ensure reliable, unfettered flows of oil and natural gas from the Caspian region to the global marketplace, and from multiple economic transit...

435

Energy Technologies  

Science Conference Proceedings (OSTI)

Mar 15, 2012 ... Sponsored by: The Minerals, Metals and Materials Society, TMS Extraction and ... Inventory flows include inputs of raw materials, energy and water, .... Preparation of Biodiesel by Transesterification of Canola Oil Using Solid...

436

A Look Inside the Cash Flow Opportunity Calculator FINAL  

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

Cash Flow Opportunity (CFO) Calculator was developed to address the "we don't have the money" objection that many organizations face when trying to implement energy efficiency...

437

Simplified Wind Flow Model for the Estimation of Aerodynamic ...  

Science Conference Proceedings (OSTI)

... and the low-frequency fluctuations present in the ABL flow are suppressed; that is, the peak energy of the ... For personal use only; all rights reserved. ...

2013-08-19T23:59:59.000Z

438

Geothermal: Sponsored by OSTI -- Two-phase flow in geothermal...  

Office of Scientific and Technical Information (OSTI)

GEOTHERMAL TECHNOLOGIES LEGACY COLLECTION - Sponsored by OSTI -- Two-phase flow in geothermal energy sources. Annual report, June 1, 1975--May 31, 1976 Geothermal Technologies...

439

Handbook of thermodynamics, heat transfer and fluid flow  

E-Print Network (OSTI)

9 Nov 2010 ... Handbook of thermodynamics, heat transfer and fluid flow | JUNE 1992 | 3 Volume | U.S. Department of Energy FSC-6910 Washington, D.C....

440

Advanced Vanadium Redox Flow Batteries with Mixed Acid ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Large-scale energy storage technologies like redox flow batteries have been sought for renewable integration and smart grid applications.

Note: This page contains sample records for the topic "traces energy flows" 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

Building Technologies Program: Tax Deduction Qualified Software - TRACE 700 version 6.1.0.0  

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

0.0 0.0 On this page you'll find information about the TRACE 700 version 6.1.0.0 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings (www.buildings.energy.gov/commercial/). Date Documentation Received by DOE: 18 December 2006 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements (1) The name, address, and (if applicable) web site of the software developer; TRANE, A Division of American Standard 3600 Pammel Creek Road LaCrosse, Wisconsin 54601 www.tranecds.com (2) The name, email address, and telephone number of the person to contact for further

442

Building Technologies Program: Tax Deduction Qualified Software - TRACE 700 version 6.1.1.0  

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

1.0 1.0 On this page you'll find information about the TRACE 700 version 6.1.1.0 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings (www.buildings.energy.gov/commercial/). Date Documentation Received by DOE: 26 June 2007 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements (1) The name, address, and (if applicable) web site of the software developer; TRANE, A Division of American Standard 3600 Pammel Creek Road LaCrosse, Wisconsin 54601 www.tranecds.com (2) The name, email address, and telephone number of the person to

443

Building Technologies Program: Tax Deduction Qualified Software - TRACE 700 version 6.1.2  

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

2 2 On this page you'll find information about the TRACE 700 version 6.1.2 qualified computer software (www.buildings.energy.gov/qualified_software.html), which calculates energy and power cost savings that meet federal tax incentive requirements for commercial buildings (www.buildings.energy.gov/commercial/). Date Documentation Received by DOE: 9 November 2007 Statements in quotes are from the software developer. Internal Revenue Code §179D (c)(1) and (d) Regulations Notice 2006-52, Section 6 requirements (1) The name, address, and (if applicable) web site of the software developer; TRANE, A Division of American Standard 3600 Pammel Creek Road LaCrosse, Wisconsin 54601 www.tranecds.com (2) The name, email address, and telephone number of the person to contact for further

444

flow_measurements_cryogenic  

Science Conference Proceedings (OSTI)

... A dynamic weighing system is used to measure ... using liquid nitrogen at flow rates of 1 ... For volumetric flow rate measurement, the uncertainty in fluid ...

2013-06-17T23:59:59.000Z

445

Multiphase flow calculation software  

DOE Patents (OSTI)

Multiphase flow calculation software and computer-readable media carrying computer executable instructions for calculating liquid and gas phase mass flow rates of high void fraction multiphase flows. The multiphase flow calculation software employs various given, or experimentally determined, parameters in conjunction with a plurality of pressure differentials of a multiphase flow, preferably supplied by a differential pressure flowmeter or the like, to determine liquid and gas phase mass flow rates of the high void fraction multiphase flows. Embodiments of the multiphase flow calculation software are suitable for use in a variety of applications, including real-time management and control of an object system.

Fincke, James R. (Idaho Falls, ID)

2003-04-15T23:59:59.000Z

446

Multiphase Flow Modeling Research  

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

Science Chris Guenther, Director Computational Science Division RUA Spring Meeting, Morgantown, WV March 2013 2 NETL's Multiphase Flow Science Team * The Multiphase Flow Science...

447

Non-Invasive Energy Meter  

Sandia has developed an energy monitoring device that measures energy from liquid flow systems (e.g., solar systems) using a simple technique that ...

448

Energy Assurance Daily | Department of Energy  

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

Energy Assurance Daily Energy Assurance Daily Energy Assurance Daily Energy Assurance Daily provides a summary of public information concerning current energy issues. Published Monday through Friday to inform stakeholders of developments affecting energy systems, flows, and markets, it provides highlights of energy issues rather than a comprehensive coverage. Energy Assurance Daily covers: Major energy developments Electricity, petroleum, and natural gas industries Other relevant news Energy prices The Infrastructure Security and Energy Restoration (ISER) Division cannot guarantee the accuracy of the material in the Energy Assurance Daily. Any further use is subject to the copyright restrictions of the source document. The Energy Assurance Daily has workable hypertext links to the

449

Semiclassical energy conditions  

E-Print Network (OSTI)

We present and develop several nonlinear energy conditions suitable for use in the semiclassical regime. In particular, we consider the recently formulated "flux energy condition" (FEC), and the novel "trace-of-square" (TOSEC) and "determinant" (DETEC) energy conditions. As we shall show, these nonlinear energy conditions behave much better than the classical linear energy conditions in the presence of semiclassical quantum effects. Moreover, whereas the quantum extensions of these nonlinear energy conditions seem to be quite widely satisfied as one enters the quantum realm, analogous quantum extensions are generally not useful for the linear classical energy conditions.

Martin-Moruno, Prado

2013-01-01T23:59:59.000Z

450

Evaluation of uncertainties due to hydrogeological modeling and groundwater flow analysis: Steady flow, transient flow, and thermal studies  

SciTech Connect

Starting with regional geographic, geologic, surface and subsurface hydrologic, and geophysical data for the Tono area in Gifu, Japan, we develop an effective continuum model to simulate subsurface flow and transport in a 4 km by 6 km by 3 km thick fractured granite rock mass overlain by sedimentary layers. Individual fractures are not modeled explicitly. Rather, continuum permeability and porosity distributions are assigned stochastically, based on well-test data and fracture density measurements. Lithologic layering and one major fault, the Tsukiyoshi Fault, are assigned deterministically. We conduct three different studies: (1) the so-called base case, in which the model simulates the steady-state groundwater flow through the site, and then stream trace analysis is used to calculate travel times to the model boundary from specified release points; (2) simulations of transient flow during long term pump tests (LTPT) using the base-case model; and (3) thermal studies in which coupled heat flow and fluid flow are modeled, to examine the effects of the geothermal gradient on groundwater flow. The base-case study indicates that the choice of open or closed lateral boundaries has a strong influence on the regional groundwater flow patterns produced by the models, but no field data exist that can be used to determine which boundary conditions are more realistic. The LTPT study cannot be used to distinguish between the alternative boundary conditions, because the pumping rate is too small to produce an analyzable pressure response at the model boundaries. In contrast, the thermal study shows that the temperature distributions produced by the open and closed models differ greatly. Comparison with borehole temperature data may be used to eliminate the closed model from further consideration.

Doughty, Christine; Karasaki, Kenzi

2002-12-11T23:59:59.000Z

451

Gravity Waves in a Horizontal Shear Flow. Part II: Interaction between Gravity Waves and Potential Vorticity Perturbations  

E-Print Network (OSTI)

Interaction among potential vorticity perturbations and propagating internal gravity waves in a horizontally sheared zonal flow is investigated. In the strong stratification limit, an initial vorticity perturbation weakly excites two propagating gravity waves while the density component of the potential vorticity perturbation is significantly amplified, potentially leading to convective collapse. If stratification is sufficiently weak, a strong coupling between vorticity perturbations and gravity waves is found and spontaneous gravity wave generation occurs. This coupling can be traced to the nonnormal interaction between the potential vorticity and gravity wave manifolds in the weak stratification limit. Vorticity perturbations amplify in energy due to downgradient Reynolds stress when their phase lines tilt against the shear and the large growth attained is transferred to propagating gravity waves. When the flow geometry is such that the excited gravity waves are confined in the vicinity of the vorticity perturbation by their trapping levels, an overall convective collapse of this region can be anticipated. On the other hand, when the flow geometry permits wave propagation, significant gravity wave emission occurs. 1.

Nikolaos A. Bakas; Brian; F. Farrell

2007-01-01T23:59:59.000Z

452

COLLOQUIUM: On Tracing the Origins of the Solar Wind | Princeton Plasma  

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

January 8, 2014, 4:00pm to 5:30pm January 8, 2014, 4:00pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: On Tracing the Origins of the Solar Wind Dr. Sarah McGregor Boston University The Sun emits a constant flow of particles from its surface. Mainly composed of Protons and electrons, and dragging with it magnetic fields, this Solar Wind expands outwards from the sun, interacting with planets and spacecraft alike. Since the 1960s, in situ observations have shown that the solar wind is comprised of two distinct states: slow (300550 km/s) and fast (600800 km/s). Temperature, density, and compositional variations between the two suggest different sources for the fast and slow solar wind. Using state of the art models and observations I find that the solar wind observations used to distinguish between fast and slow solar wind are not

453

Effects of coal-derived trace species on the performance of molten carbonate fuel cells  

DOE Green Energy (OSTI)

The overall objective of the present study was to determine in detail the interaction effects of 10 simultaneously present, coal-gas contaminants, both on each other and on components of the Carbonate Fuel Cell. The primary goal was to assess underlying chemistries and reaction mechanisms which may cause decay in fuel cell performance or endurance as a result of both physics-chemical and/or mechanical interactions with the cell components and internal fuel cell parts. It was found, both from theory and cell test evidence, that trace contaminant interactions may occur with: Fuel-cell Electrodes (e.g., in this study with the Ni-anode), Lithium/Potassium Carbonate Electrolyte, Nickel and SS-Hardware, and by Mechanical Obstruction of Gas Flow in the Anode Plenum.

Pigeaud, A.

1991-10-01T23:59:59.000Z

454

Energy Conservation  

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

Energy Energy Goal 1: Energy Conservation LANL strives to reduce greenhouse gas emissions to meet and surpass Department of Energy goals. The Lab's goal is to reduce emissions from energy use in our facilities and driving vehicles in our fleet by 28 percent. Energy Conservation» Efficient Water Use & Management» High Performance Sustainable Buildings» Greening Transportation» Green Purchasing & Green Technology» Pollution Prevention» Science Serving Sustainability» ENVIRONMENTAL SUSTAINABILITY GOALS at LANL Renewable energy goals: With the newly installed low flow turbine, LANL will be able to meet nearly half of its renewable energy goals for 2013. LANL was one of the original investors in renewable energy through the high flow turbines at Abiquiu Dam. Engineer Campbell of the Abiquiu Dam Facility demonstrates the use of the low flow turbine for electricity generation. The Abiquiu Dam power station's water flow and electrical output is controlled from monitors in Los Alamos. Inside the TA-03 Steam Plant: Replacement or reconfiguration of the 50 year old steam plant and piping system could provide significant energy savings for LANL.

455

Spin tracking simulations in AGS based on ray-tracing methods - bare lattice, no snakes -  

SciTech Connect

This Note reports on the first simulations of and spin dynamics in the AGS using the ray-tracing code Zgoubi. It includes lattice analysis, comparisons with MAD, DA tracking, numerical calculation of depolarizing resonance strengths and comparisons with analytical models, etc. It also includes details on the setting-up of Zgoubi input data files and on the various numerical methods of concern in and available from Zgoubi. Simulations of crossing and neighboring of spin resonances in AGS ring, bare lattice, without snake, have been performed, in order to assess the capabilities of Zgoubi in that matter, and are reported here. This yields a rather long document. The two main reasons for that are, on the one hand the desire of an extended investigation of the energy span, and on the other hand a thorough comparison of Zgoubi results with analytical models as the 'thin lens' approximation, the weak resonance approximation, and the static case. Section 2 details the working hypothesis : AGS lattice data, formulae used for deriving various resonance related quantities from the ray-tracing based 'numerical experiments', etc. Section 3 gives inventories of the intrinsic and imperfection resonances together with, in a number of cases, the strengths derived from the ray-tracing. Section 4 gives the details of the numerical simulations of resonance crossing, including behavior of various quantities (closed orbit, synchrotron motion, etc.) aimed at controlling that the conditions of particle and spin motions are correct. In a similar manner Section 5 gives the details of the numerical simulations of spin motion in the static case: fixed energy in the neighboring of the resonance. In Section 6, weak resonances are explored, Zgoubi results are compared with the Fresnel integrals model. Section 7 shows the computation of the {rvec n} vector in the AGS lattice and tuning considered. Many details on the numerical conditions as data files etc. are given in the Appendix Section, pages A and sqs.

Meot F.; Ahrens& #44; L.; Glenn& #44; J.; Huang& #44; H.; Luccio& #44; A.; MacKay& #44; W.W.; Roser& #44; T.; Tsoupas& #44; N.

2009-09-01T23:59:59.000Z

456

Radial flow heat exchanger  

DOE Patents (OSTI)

A radial flow heat exchanger (20) having a plurality of first passages (24) for transporting a first fluid (25) and a plurality of second passages (26) for transporting a second fluid (27). The first and second passages are arranged in stacked, alternating relationship, are separated from one another by relatively thin plates (30) and (32), and surround a central axis (22). The thickness of the first and second passages are selected so that the first and second fluids, respectively, are transported with laminar flow through the passages. To enhance thermal energy transfer between first and second passages, the latter are arranged so each first passage is in thermal communication with an associated second passage along substantially its entire length, and vice versa with respect to the second passages. The heat exchangers may be stacked to achieve a modular heat exchange assembly (300). Certain heat exchangers in the assembly may be designed slightly differently than other heat exchangers to address changes in fluid properties during transport through the heat exchanger, so as to enhance overall thermal effectiveness of the assembly.

Valenzuela, Javier (Hanover, NH)

2001-01-01T23:59:59.000Z

457

Trace element fingerprinting of ancient Chinese gold with femtosecond laser  

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

Trace element fingerprinting of ancient Chinese gold with femtosecond laser Trace element fingerprinting of ancient Chinese gold with femtosecond laser ablation-inductivity coupled mass spectrometry Title Trace element fingerprinting of ancient Chinese gold with femtosecond laser ablation-inductivity coupled mass spectrometry Publication Type Journal Article Year of Publication 2009 Authors Brostoff, Lynn B., Jhanis J. Gonzalez, Paul Jett, and Richard E. Russo Journal Journal of Archeological Science Volume 36 Start Page 461 Issue 2 Pagination 461-466 Date Published 02/2009 Keywords Ancient gold, femtosecond, la-icp-ms, Trace element Abstract In this collaborative investigation, femtosecond laser ablation-inductively coupled mass spectrometry (LA-ICP-MS) was applied to the study of a remarkable group of ancient Chinese gold objects in the Smithsonian's Freer Gallery of Art and Arthur M. Sackler Gallery. Taking advantage of the superior ablation characteristics and high precision of a femtosecond 266 nm Ti:sapphire laser at Lawrence Berkeley National Laboratory, major, minor and trace element concentrations in the gold fragments were quantified. Results validate use of femtosecond LA-ICP-MS for revealing ''fingerprints'' in minute gold samples. These fingerprints allow us to establish patterns based on the association of silver, palladium and platinum that support historical, technical and stylistic relationships, and shed new light on these ancient objects.

458

ESS 2012 Peer Review - Flow-Assisted Zinc Anode Batteries for Grid-Scale Electricity Storage - Sanjoy Banerjee, CUNY Energy Institute  

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

GRID-CONNECTED SYSTEM! GRID-CONNECTED SYSTEM! !"#$%&'()* !"#$%&'()* The CUNY EI is developing and testing hardware/software systems for peak shaving applications in commercial and industrial buildings 30KWH DEMONSTRATION !"#$%&'()*+&,-./01&2134/5& 6/57+340-4/3&809-+&6/5-+6&:%-0;/& 0/68:'?&@+/0;1&A+3<484/& & '()*+&B(CC&9/&(+4/;0-4/6&B(4%&D+E F )*+& (+&F"G!& G""H&=1:C/3& I&J"K&=7C859(:&@L:(/+:1& I&M"K&@+/0;1&@L:(/+:1& & =755/0:(-C(N/6&91&>09-+&@C/:40(:&O7B/0& %.PQRR340(+;"""GS8/P(+:S:75& FLOW-ASSISTED ZINC ANODE BATTERIES FOR GRID-SCALE ELECTRICITY STORAGE !

459

Reconstructing $f(R,T)$ gravity from holographic dark energy  

E-Print Network (OSTI)

We numerically reconstruct those $f(R,T)$ theories of gravity (where $T$ is the trace of the energy-momentum tensor) which are able to reproduce holographic dark energy models.

Houndjo, M J S

2011-01-01T23:59:59.000Z

460

Measurement of the Rates of Production and Dissipation of Turbulent Kinetic Energy in an Energetic Tidal Flow: Red Wharf Bay Revisited  

Science Conference Proceedings (OSTI)

Simultaneous measurements of the rates of turbulent kinetic energy (TKE) dissipation (?) and production (P) have been made over a period of 24 h at a tidally energetic site in the northern Irish Sea in water of 25-m depth. Some ? profiles from 5 ...

Tom P. Rippeth; John H. Simpson; Eirwen Williams; Mark E. Inall

2003-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "traces energy flows" 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

Battery Researchers Go With the Flow | U.S. DOE Office of Science...  

Office of Science (SC) Website

Battery Researchers Go With the Flow Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences...

462

Uranyl Nitrate Flow Loop  

Science Conference Proceedings (OSTI)

The objectives of the work discussed in this report were to: (1) develop a flow loop that would simulate the purified uranium-bearing aqueous stream exiting the solvent extraction process in a natural uranium conversion plant (NUCP); (2) develop a test plan that would simulate normal operation and disturbances that could be anticipated in an NUCP; (3) use the flow loop to test commercially available flowmeters for use as safeguards monitors; and (4) recommend a flowmeter for production-scale testing at an NUCP. There has been interest in safeguarding conversion plants because the intermediate products [uranium dioxide (UO{sub 2}), uranium tetrafluoride (UF{sub 4}), and uranium hexafluoride (UF{sub 6})] are all suitable uranium feedstocks for producing special nuclear materials. Furthermore, if safeguards are not applied virtually any nuclear weapons program can obtain these feedstocks without detection by the International Atomic Energy Agency (IAEA). Historically, IAEA had not implemented safeguards until the purified UF{sub 6} product was declared as feedstock for enrichment plants. H. A. Elayat et al. provide a basic definition of a safeguards system: 'The function of a safeguards system on a chemical conversion plant is in general terms to verify that no useful nuclear material is being diverted to use in a nuclear weapons program'. The IAEA now considers all highly purified uranium compounds as candidates for safeguarding. DOE is currently interested in 'developing instruments, tools, strategies, and methods that could be of use to the IAEA in the application of safeguards' for materials found in the front end of the nuclear fuel cycle-prior to the production of the uranium hexafluoride or oxides that have been the traditional starting point for IAEA safeguards. Several national laboratories, including Oak Ridge, Los Alamos, Lawrence Livermore, and Brookhaven, have been involved in developing tools or techniques for safeguarding conversion plants. This study was sponsored by the U.S. Department of Energy (DOE) NA-241, Office of Dismantlement and Transparency.

Ladd-Lively, Jennifer L [ORNL

2008-10-01T23:59:59.000Z

463

TWO-PHASE FLOW TURBINE FOR COGENERATION, GEOTHERMAL,  

E-Print Network (OSTI)

TWO-PHASE FLOW TURBINE FOR COGENERATION, GEOTHERMAL, SOLAR AND OTHER APPLICATIONS Prepared For REPORT (FAR) TWO-PHASE FLOW TURBINE FOR COGENERATION, GEOTHERMAL, SOLAR AND OTHER APPLICATIONS EISG://www.energy.ca.gov/research/index.html. #12;Page 1 Two-Phase Flow Turbine For Cogeneration, Geothermal, Solar And Other Applications EISG

464

Energy Policy Act Transportation Study: Interim Report on ...  

U.S. Energy Information Administration (EIA)

Energy Information Administration iii Energy Policy Act Transportation Study: Interim Report on Natural Gas Flows and Rates Preface This report, ...

465

Portable wastewater flow meter  

DOE Patents (OSTI)

A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under fill pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

1999-02-02T23:59:59.000Z

466

Portable wastewater flow meter  

DOE Patents (OSTI)

A portable wastewater flow meter particularly adapted for temporary use at a single location in measuring the rate of liquid flow in a circular entrance conduit of a sewer manhole both under free flow and submerged, open channel conditions and under full pipe, surcharged conditions, comprising an apparatus having a cylindrical external surface and an inner surface that constricts the flow through the apparatus in such a manner that a relationship exists between (1) the difference between the static pressure head of liquid flowing through the entrance of the apparatus and the static pressure head of liquid flowing through the constriction, and (2) the rate of liquid flow through the apparatus.

Hunter, Robert M. (320 S. Wilson Ave., Bozeman, MT 59715)

1990-01-01T23:59:59.000Z

467

The application of a synchrotron radiation microprobe to trace element analysis  

SciTech Connect

Synchrotron radiation is light emitted by electrons when accelerated in a circular orbit. Properties of synchrotron radiation important to trace element analysis by x-ray fluorescence analysis include a broad, continuous and tunable energy spectrum for K- and L-shell excitation of all elements; a linearly polarized source reducing the scattered radiation backgrounds; low energy deposition in the target; and an appreciable flux in narrow energy bandwidths for chemical speciation. Experiments to date have generally used ''white'' continuous spectra with a low energy absorber and no focussing, but future runs will use focussing mirrors which increase intensities by a factor of more than 1000. Monochromators will be used to select the energy and bandwidths appropriate to the experiment. Detection limits for thin biomedical samples using a solid-state detector, a 0.5 mm beam and a 5 min counting interval were in the range of 30 ppB for calcium to 50 ppB for zinc. A prototype wet cell was designed, constructed and tested using cat cardiac myocytes with the result that major trace elements such as iron could be quantitated in single myocytes. The x-ray microprobe was used to localize gallium in fetal rat bone explants after being cultured in BGJ media containing 25 ..mu..M Ga(NO/sub 3/)/sub 3/. The high brightness of x rays from a synchrotron source makes possible the development of computerized tomography on a micrometer scale. A tomogram of a freeze-dried caterpillar head was produced in a 50 min scan. The pixel size was 30 ..mu..m using a 20-..mu..m beam. 2 refs., 1 fig.

Gordon, B.M.; Hanson, A.L.; Jones, K.W.; Kwiatek, W.M.; Long, G.J.; Pounds, J.G.; Schidlovsky, G.; Spanne, P.; Rivers, M.L.; Sutton, S.R.

1987-01-01T23:59:59.000Z

468

Energy  

Office of Legacy Management (LM)

..) ".. ..) ".. _,; ,' . ' , ,; Depar?.me.nt ,of.' Energy Washington; DC 20585 : . ' , - $$ o"\ ' ~' ,' DEC ?;$ ;y4,,, ~ ' .~ The Honorable John Kalwitz , 200 E. Wells Street Milwaukee, W~isconsin 53202, . . i :. Dear,Mayor 'Kalwitz: " . " Secretary of Energy Hazel' O'Leary has announceha new,approach 'to,openness in " the Department of Ene~rgy (DOE) and its communications with'the public. In -. support of~this initiative, we areipleased to forward the enclosed information related to the Milwaukee Ai.rport site in your jurisdiction that performed work, for DOE orits predecessor agencies. information; use, and retention. ., This information .is provided for your '/ ,' DOE's Formerly Utilized Sites Remedial:'Action~'Prog&is responsible for ,"'

469

Breakthrough Flow Battery Cell Stack: Transformative Electrochemical Flow Storage System (TEFSS)  

SciTech Connect

GRIDS Project: UTRC is developing a flow battery with a unique design that provides significantly more power than today's flow battery systems. A flow battery is a cross between a traditional battery and a fuel cell. Flow batteries store their energy in external tanks instead of inside the cell itself. Flow batteries have traditionally been expensive because the battery cell stack, where the chemical reaction takes place, is costly. In this project, UTRC is developing a new stack design that achieves 10 times higher power than todays flow batteries. This high power output means the size of the cell stack can be smaller, reducing the amount of expensive materials that are needed. UTRCs flow battery will reduce the cost of storing electricity for the electric grid, making widespread use feasible.

None

2010-09-09T23:59:59.000Z

470

Breakthrough Flow Battery Cell Stack: Transformative Electrochemical Flow Storage System (TEFSS)  

SciTech Connect

GRIDS Project: UTRC is developing a flow battery with a unique design that provides significantly more power than today's flow battery systems. A flow battery is a cross between a traditional battery and a fuel cell. Flow batteries store their energy in external tanks instead of inside the cell itself. Flow batteries have traditionally been expensive because the battery cell stack, where the chemical reaction takes place, is costly. In this project, UTRC is developing a new stack design that achieves 10 times higher power than todays flow batteries. This high power output means the size of the cell stack can be smaller, reducing the amount of expensive materials that are needed. UTRCs flow battery will reduce the cost of storing electricity for the electric grid, making widespread use feasible.

2010-09-09T23:59:59.000Z

471

CSIRO GASLAB Network: Individual Flask Measurements of Atmospheric Trace  

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

GASLAB Network GASLAB Network CSIRO GASLAB Network: Individual Flask Measurements of Atmospheric Trace Gases (April 2003) data Data Investigators L.P. Steele, P.R. Krummel, and R.L. Langenfelds Commonwealth Scientific and Industrial Research Organisation (CSIRO) DOI 10.3334/CDIAC/atg.db1021 Data are available for four atmospheric trace gases at nine stationary sites and one moving platform (aircraft over Cape Grim, Tasmania, and Bass Strait, between the Australian continent and Tasmania). The trace gases are carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), and hydrogen (H2). Measurements of δ13C from CO2 are also included in this database. The nine stationary sites are, from north to south: Alert, Canada; Shetland Islands, Scotland; Estevan Point, Canada; Mauna Loa, Hawaii; Cape Ferguson,

472

AN OVERVIEW OF TOOL FOR RESPONSE ACTION COST ESTIMATING (TRACE)  

Science Conference Proceedings (OSTI)

Tools and techniques that provide improved performance and reduced costs are important to government programs, particularly in current times. An opportunity for improvement was identified for preparation of cost estimates used to support the evaluation of response action alternatives. As a result, CH2M HILL Plateau Remediation Company has developed Tool for Response Action Cost Estimating (TRACE). TRACE is a multi-page Microsoft Excel{reg_sign} workbook developed to introduce efficiencies into the timely and consistent production of cost estimates for response action alternatives. This tool combines costs derived from extensive site-specific runs of commercially available remediation cost models with site-specific and estimator-researched and derived costs, providing the best estimating sources available. TRACE also provides for common quantity and key parameter links across multiple alternatives, maximizing ease of updating estimates and performing sensitivity analyses, and ensuring consistency.

FERRIES SR; KLINK KL; OSTAPKOWICZ B

2012-01-30T23:59:59.000Z

473

Raindrop Oscillations: Evaluation of a Potential Flow Model with Gravity  

Science Conference Proceedings (OSTI)

Potential flow oscillations about an equilibrium raindrop distortion were modeled for ellipsoidal variations driven by changes in surface and gravitational potential energy with linear dissipation of kinetic energy. The model was found to be ...

Kenneth V. Beard

1984-05-01T23:59:59.000Z

474

Progress on linking gender and sustainable energy  

SciTech Connect

The field of gender and energy has been identified as critical in global sustainable energy development and is increasingly important to decision makers. The theme of women and energy was of significance at the 1998 World Renewable Energy Congress in Florence, Italy. This paper traces further developments in this field by summarizing selected programmatic initiatives, meetings, and publications over the past 18 months.

Farhar, B.

2000-04-05T23:59:59.000Z

475

A new structure for bidirectional power flow  

Science Conference Proceedings (OSTI)

In this paper, methods of energy recovery for electric motors in braking mode are presented. Also for motors with low and medium regenerative power, a low cost and simple structure is proposed. In this method, for converting the high voltage of DC bus ... Keywords: bidirectional power flow, energy saving, regenerative brake

Seyed Borhan Azimi; Hassan Ghafoori Fard

2005-03-01T23:59:59.000Z

476

Dynamic ray tracing and traveltime corrections for global seismic tomography  

Science Conference Proceedings (OSTI)

We present a dynamic ray tracing program for a spherically symmetric Earth that may be used to compute Frechet kernels for traveltime and amplitude anomalies at finite frequency. The program works for arbitrarily defined phases and background models. The numerical precisions of kinematic and dynamic ray tracing are optimized to produce traveltime errors under 0.1 s, which is well below the data uncertainty in global seismology. This tolerance level is obtained for an integration step size of about 20 km for the most common seismic phases. We also give software to compute ellipticity, crustal and topographic corrections and attenuation.

Tian Yue [Department of Geosciences, Guyot Hall, Princeton University, NJ 08544 (United States)], E-mail: ytian@princeton.edu; Hung, S.-H. [Department of Geosciences, National Taiwan University, Taipei 106, Taiwan (China); Nolet, Guust [Department of Geosciences, Guyot Hall, Princeton University, NJ 08544 (United States); Montelli, Raffaella [ExxonMobil Upstream Research Company, P.O. Box 22189, GW03-940A, Houston, TX 77252-2189 (United States); Dahlen, F.A. [Department of Geosciences, Guyot Hall, Princeton University, NJ 08544 (United States)

2007-09-10T23:59:59.000Z

477

Vertical Flow Wetland Pilot Study  

Science Conference Proceedings (OSTI)

This is an interim report to present the preliminary results of a study conducted by Duke Energy to test the potential effectiveness of vertical flow wetlands (VFWs) for the removal of selenium, mercury, and other related compounds from a flue gas desulfurization (FGD) discharge. These compounds commonly are found in and regulated for coal-fired utility water discharges. There is a widespread need for a cost-effective alternative to physiochemical treatment to maintain compliance for these parameters, on...

2008-12-08T23:59:59.000Z

478

Analysis of a flapping foil system for energy harvesting at low Reynolds number  

E-Print Network (OSTI)

frequency for flow energy harvesting of a flapping foil. J.coupling and flow energy harvesting by a flapping foil.Peng, Z. & Zhu, Q. : Energy harvesting through flow-induced

Cho, Hunkee

2011-01-01T23:59:59.000Z

479

The evolution of high energy accelerators  

SciTech Connect

In this lecture I would like to trace how high energy particle accelerators have grown from tools used for esoteric small-scale experiments to gigantic projects being hotly debated in Congress as well as in the scientific community.

Courant, E.D.

1989-10-01T23:59:59.000Z

480

Page not found | Department of Energy  

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

hssdownloadssafety-bulletin-2011-01-events-beyond-design-safety-basis-analysis Page MANHATTAN PROJECT The Department of Energy traces its origins to World War II and the...

Note: This page contains sample records for the topic "traces energy flows" 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.