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Sample records for maximum achievable control

  1. Boiler Maximum Achievable Control Technology (MACT) Technical...

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

    Boiler Maximum Achievable Control Technology (MACT) Technical Assistance - Fact Sheet, April 2015 Boiler Maximum Achievable Control Technology (MACT) Technical Assistance - Fact ...

  2. Boiler Maximum Achievable Control Technology (MACT) Technical Assistance- Fact Sheet, April 2015

    Broader source: Energy.gov [DOE]

    Fact sheet about the Boiler Maximum Achievable Control Technology (MACT) Technical Assistance Program

  3. Maximum Achievable Control Technology for New Industrial Boilers (released in AEO2005)

    Reports and Publications (EIA)

    2005-01-01

    As part of Clean Air Act 90 (CAAA90, the EPA on February 26, 2004, issued a final rulethe National Emission Standards for Hazardous Air Pollutants (NESHAP) to reduce emissions of hazardous air pollutants (HAPs) from industrial, commercial, and institutional boilers and process heaters. The rule requires industrial boilers and process heaters to meet limits on HAP emissions to comply with a Maximum Achievable Control Technology (MACT) floor level of control that is the minimum level such sources must meet to comply with the rule. The major HAPs to be reduced are hydrochloric acid, hydrofluoric acid, arsenic, beryllium, cadmium, and nickel. The EPA predicts that the boiler MACT rule will reduce those HAP emissions from existing sources by about 59,000 tons per year in 2005.

  4. Are There Practical Approaches for Achieving the Theoretical Maximum Engine

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

    Efficiency? | Department of Energy Are There Practical Approaches for Achieving the Theoretical Maximum Engine Efficiency? Are There Practical Approaches for Achieving the Theoretical Maximum Engine Efficiency? 2004 Diesel Engine Emissions Reduction (DEER) Conference Presentation: University of Wisconsin, Madison 2004_deer_foster.pdf (273.98 KB) More Documents & Publications Fuel Modification t Facilitate Future Combustion Regimes? The Next ICE Age The Next ICE Age

  5. Limits of optimal control yields achievable with quantum controllers...

    Office of Scientific and Technical Information (OSTI)

    Limits of optimal control yields achievable with quantum controllers Prev Next Title: Limits of optimal control yields achievable with quantum controllers Authors: Wu, ...

  6. Limits of optimal control yields achievable with quantum controllers...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Limits of optimal control yields achievable with quantum controllers Citation Details In-Document Search Title: Limits of optimal ...

  7. LANDFILL OPERATION FOR CARBON SEQUESTRATION AND MAXIMUM METHANE EMISSION CONTROL

    SciTech Connect (OSTI)

    Don Augenstein

    2001-02-01

    The work described in this report, to demonstrate and advance this technology, has used two demonstration-scale cells of size (8000 metric tons [tonnes]), sufficient to replicate many heat and compaction characteristics of larger ''full-scale'' landfills. An enhanced demonstration cell has received moisture supplementation to field capacity. This is the maximum moisture waste can hold while still limiting liquid drainage rate to minimal and safely manageable levels. The enhanced landfill module was compared to a parallel control landfill module receiving no moisture additions. Gas recovery has continued for a period of over 4 years. It is quite encouraging that the enhanced cell methane recovery has been close to 10-fold that experienced with conventional landfills. This is the highest methane recovery rate per unit waste, and thus progress toward stabilization, documented anywhere for such a large waste mass. This high recovery rate is attributed to moisture, and elevated temperature attained inexpensively during startup. Economic analyses performed under Phase I of this NETL contract indicate ''greenhouse cost effectiveness'' to be excellent. Other benefits include substantial waste volume loss (over 30%) which translates to extended landfill life. Other environmental benefits include rapidly improved quality and stabilization (lowered pollutant levels) in liquid leachate which drains from the waste.

  8. LANDFILL OPERATION FOR CARBON SEQUESTRATION AND MAXIMUM METHANE EMISSION CONTROL

    SciTech Connect (OSTI)

    Don Augenstein; Ramin Yazdani; Rick Moore; Michelle Byars; Jeff Kieffer; Professor Morton Barlaz; Rinav Mehta

    2000-02-26

    Controlled landfilling is an approach to manage solid waste landfills, so as to rapidly complete methane generation, while maximizing gas capture and minimizing the usual emissions of methane to the atmosphere. With controlled landfilling, methane generation is accelerated to more rapid and earlier completion to full potential by improving conditions (principally moisture, but also temperature) to optimize biological processes occurring within the landfill. Gas is contained through use of surface membrane cover. Gas is captured via porous layers, under the cover, operated at slight vacuum. A field demonstration project has been ongoing under NETL sponsorship for the past several years near Davis, CA. Results have been extremely encouraging. Two major benefits of the technology are reduction of landfill methane emissions to minuscule levels, and the recovery of greater amounts of landfill methane energy in much shorter times, more predictably, than with conventional landfill practice. With the large amount of US landfill methane generated, and greenhouse potency of methane, better landfill methane control can play a substantial role both in reduction of US greenhouse gas emissions and in US renewable energy. The work described in this report, to demonstrate and advance this technology, has used two demonstration-scale cells of size (8000 metric tons [tonnes]), sufficient to replicate many heat and compaction characteristics of larger ''full-scale'' landfills. An enhanced demonstration cell has received moisture supplementation to field capacity. This is the maximum moisture waste can hold while still limiting liquid drainage rate to minimal and safely manageable levels. The enhanced landfill module was compared to a parallel control landfill module receiving no moisture additions. Gas recovery has continued for a period of over 4 years. It is quite encouraging that the enhanced cell methane recovery has been close to 10-fold that experienced with conventional

  9. Dithering Digital Ripple Correlation Control for Photovoltaic Maximum Power Point Tracking

    SciTech Connect (OSTI)

    Barth, C; Pilawa-Podgurski, RCN

    2015-08-01

    This study demonstrates a new method for rapid and precise maximum power point tracking in photovoltaic (PV) applications using dithered PWM control. Constraints imposed by efficiency, cost, and component size limit the available PWM resolution of a power converter, and may in turn limit the MPP tracking efficiency of the PV system. In these scenarios, PWM dithering can be used to improve average PWM resolution. In this study, we present a control technique that uses ripple correlation control (RCC) on the dithering ripple, thereby achieving simultaneous fast tracking speed and high tracking accuracy. Moreover, the proposed method solves some of the practical challenges that have to date limited the effectiveness of RCC in solar PV applications. We present a theoretical derivation of the principles behind dithering digital ripple correlation control, as well as experimental results that show excellent tracking speed and accuracy with basic hardware requirements.

  10. Estimates of Savings Achievable from Irrigation Controller

    SciTech Connect (OSTI)

    Williams, Alison; Fuchs, Heidi; Whitehead, Camilla Dunham

    2014-03-28

    This paper performs a literature review and meta-analysis of water savings from several types of advanced irrigation controllers: rain sensors (RS), weather-based irrigation controllers (WBIC), and soil moisture sensors (SMS).The purpose of this work is to derive average water savings per controller type, based to the extent possible on all available data. After a preliminary data scrubbing, we utilized a series of analytical filters to develop our best estimate of average savings. We applied filters to remove data that might bias the sample such as data self-reported by manufacturers, data resulting from studies focusing on high-water users, or data presented in a non-comparable format such as based on total household water use instead of outdoor water use. Because the resulting number of studies was too small to be statistically significant when broken down by controller type, this paper represents a survey and synthesis of available data rather than a definitive statement regarding whether the estimated water savings are representative.

  11. Method of achieving the controlled release of thermonuclear energy

    DOE Patents [OSTI]

    Brueckner, Keith A.

    1986-01-01

    A method of achieving the controlled release of thermonuclear energy by illuminating a minute, solid density, hollow shell of a mixture of material such as deuterium and tritium with a high intensity, uniformly converging laser wave to effect an extremely rapid build-up of energy in inwardly traveling shock waves to implode the shell creating thermonuclear conditions causing a reaction of deuterons and tritons and a resultant high energy thermonuclear burn. Utilizing the resulting energy as a thermal source and to breed tritium or plutonium. The invention also contemplates a laser source wherein the flux level is increased with time to reduce the initial shock heating of fuel and provide maximum compression after implosion; and, in addition, computations and an equation are provided to enable the selection of a design having a high degree of stability and a dependable fusion performance by establishing a proper relationship between the laser energy input and the size and character of the selected material for the fusion capsule.

  12. On the Stochastic Maximum Principle in Optimal Control of Degenerate Diffusions with Lipschitz Coefficients

    SciTech Connect (OSTI)

    Bahlali, Khaled Djehiche, Boualem Mezerdi, Brahim

    2007-12-15

    We establish a stochastic maximum principle in optimal control of a general class of degenerate diffusion processes with global Lipschitz coefficients, generalizing the existing results on stochastic control of diffusion processes. We use distributional derivatives of the coefficients and the Bouleau Hirsh flow property, in order to define the adjoint process on an extension of the initial probability space.

  13. Dynamic Programming and Error Estimates for Stochastic Control Problems with Maximum Cost

    SciTech Connect (OSTI)

    Bokanowski, Olivier; Picarelli, Athena; Zidani, Hasnaa

    2015-02-15

    This work is concerned with stochastic optimal control for a running maximum cost. A direct approach based on dynamic programming techniques is studied leading to the characterization of the value function as the unique viscosity solution of a second order Hamilton–Jacobi–Bellman (HJB) equation with an oblique derivative boundary condition. A general numerical scheme is proposed and a convergence result is provided. Error estimates are obtained for the semi-Lagrangian scheme. These results can apply to the case of lookback options in finance. Moreover, optimal control problems with maximum cost arise in the characterization of the reachable sets for a system of controlled stochastic differential equations. Some numerical simulations on examples of reachable analysis are included to illustrate our approach.

  14. Concurrently adjusting interrelated control parameters to achieve optimal engine performance

    DOE Patents [OSTI]

    Jiang, Li; Lee, Donghoon; Yilmaz, Hakan; Stefanopoulou, Anna

    2015-12-01

    Methods and systems for real-time engine control optimization are provided. A value of an engine performance variable is determined, a value of a first operating condition and a value of a second operating condition of a vehicle engine are detected, and initial values for a first engine control parameter and a second engine control parameter are determined based on the detected first operating condition and the detected second operating condition. The initial values for the first engine control parameter and the second engine control parameter are adjusted based on the determined value of the engine performance variable to cause the engine performance variable to approach a target engine performance variable. In order to cause the engine performance variable to approach the target engine performance variable, adjusting the initial value for the first engine control parameter necessitates a corresponding adjustment of the initial value for the second engine control parameter.

  15. Portsmouth Site Achieves Regulatory Milestone after Successful Controlled Burn

    Broader source: Energy.gov [DOE]

    PIKETON, Ohio – Portsmouth Gaseous Diffusion Plant firefighters recently completed a prescribed fire, or controlled burn, of an 18-acre prairie at the site, two weeks ahead of a regulatory deadline.

  16. Experimental study of the maximum resolution and packing density achievable in sintered and non-sintered binder-jet 3D printed steel microchannels

    SciTech Connect (OSTI)

    Elliott, Amy M; Mehdizadeh Momen, Ayyoub; Benedict, Michael; Kiggans Jr, James O

    2015-01-01

    Developing high resolution 3D printed metallic microchannels is a challenge especially when there is an essential need for high packing density of the primary material. While high packing density could be achieved by heating the structure to the sintering temperature, some heat sensitive applications require other strategies to improve the packing density of primary materials. In this study the goal is to develop high green or pack densities microchannels on the scale of 2-300 microns which have a robust mechanical structure. Binder-jet 3D printing is an additive manufacturing process in which droplets of binder are deposited via inkjet into a bed of powder. By repeatedly spreading thin layers of powder and depositing binder into the appropriate 2D profiles, complex 3D objects can be created one layer at time. Microchannels with features on the order of 500 microns were fabricated via binder jetting of steel powder and then sintered and/or infiltrated with a secondary material. The average particle size of the steel powder was varied along with the droplet volume of the inkjet-deposited binder. The resolution of the process, packing density of the primary material, the subsequent features sizes of the microchannels, and the overall microchannel quality were characterized as a function of particle size distribution, droplet sizes and heat treatment temperatures.

  17. Scientific Achievement

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

    have shown that even higher maximum solar cell efficiencies can be achieved by using "spectrum---spli;ng" geometries that combine strong light trapping and r adia=ve c oupling. Significance and Impact These results redefine the maximum efficiencies possible for solar cell conversion by simply modifying t he g eometry o f t he s ubcells. Research Details - Used detailed balance calcula.ons to describe tradi.onal geometries (strong light trapping or radia.ve coupling) and

  18. Achieving Energy Savings with Highly-Controlled Lighting in an Open-Plan Office

    SciTech Connect (OSTI)

    Rubinstein, Francis; Enscoe, Abby

    2010-04-19

    An installation in a Federal building tested the effectiveness of a highly-controlled, workstation-specific lighting retrofit. The study took place in an open-office area with 86 cubicles and low levels of daylight. Each cubicle was illuminated by a direct/indirectpendant luminaire with three 32 watt lamps, two dimmable DALI ballasts, and an occupancy sensor. A centralized control system programmed all three lamps to turn on and off according to occupancy on a workstation-by-workstation basis. Field measurements taken over the course of several monthsdemonstrated 40% lighting energy savings compared to a baseline without advanced controls that conforms to GSA's current retrofit standard. A photometric analysis found that the installation provided higher desktop light levels than the baseline, while an occupant survey found that occupants in general preferred the lighting system to thebaseline.Simple payback is fairly high; projects that can achieve lower installation costs and/or higher energy savings and those in which greenhouse gas reduction and occupant satisfaction are significant priorities provide the ideal setting for workstation-specific lighting retrofits.

  19. Advanced, Integrated Control for Building Operations to Achieve 40% Energy Saving

    SciTech Connect (OSTI)

    Lu, Yan; Song, Zhen; Loftness, Vivian; Ji, Kun; Zheng, Sam; Lasternas, Bertrand; Marion, Flore; Yuebin, Yu

    2012-10-15

    We developed and demonstrated a software based integrated advanced building control platform called Smart Energy Box (SEB), which can coordinate building subsystem controls, integrate variety of energy optimization algorithms and provide proactive and collaborative energy management and control for building operations using weather and occupancy information. The integrated control system is a low cost solution and also features: Scalable component based architecture allows to build a solution for different building control system configurations with needed components; Open Architecture with a central data repository for data exchange among runtime components; Extendible to accommodate variety of communication protocols. Optimal building control for central loads, distributed loads and onsite energy resource; uses web server as a loosely coupled way to engage both building operators and building occupants in collaboration for energy conservation. Based on the open platform of SEB, we have investigated and evaluated a variety of operation and energy saving control strategies on Carnegie Mellon University Intelligent Work place which is equipped with alternative cooling/heating/ventilation/lighting methods, including radiant mullions, radiant cooling/heating ceiling panels, cool waves, dedicated ventilation unit, motorized window and blinds, and external louvers. Based on the validation results of these control strategies, they were integrated in SEB in a collaborative and dynamic way. This advanced control system was programmed and computer tested with a model of the Intelligent Workplace's northern section (IWn). The advanced control program was then installed in the IWn control system; the performance was measured and compared with that of the state of the art control system to verify the overall energy savings great than 40%. In addition advanced human machine interfaces (HMI's) were developed to communicate both with building occupants and

  20. Identification of Energy Efficiency Opportunities through Building Data Analysis and Achieving Energy Savings through Improved Controls

    SciTech Connect (OSTI)

    Katipamula, Srinivas; Taasevigen, Danny J.; Koran, Bill

    2014-09-04

    This chapter will highlight analysis techniques to identify energy efficiency opportunities to improve operations and controls. A free tool, Energy Charting and Metrics (ECAM), will be used to assist in the analysis of whole-building, sub-metered, and/or data from the building automation system (BAS). Appendix A describes the features of ECAM in more depth, and also provide instructions for downloading ECAM and all resources pertaining to using ECAM.

  1. Maximum-likelihood

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

    Jurisdiction waters of the Gulf of Mexico. Alaska is all onshore. Total crews includes crews with unknown survey dimension. Data are reported on the first and fifteenth of each month, except January when they are reported only on the fifteenth. When semi-monthly values differ for the month, the larger of the two values is shown here. Consequently, this table reflects the maximum number of crews at work at any time during the month. See Definitions, Sources, and Notes link above for more

  2. Awards, Achievements

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

    Achievements Awards, Achievements The Lab's mission is to develop and apply science and technology to ensure the safety, security, and reliability of the U.S. nuclear deterrent; reduce global threats; and solve other emerging national security and energy challenges. Contact Jenna L. Montoya 505-665-4230 Email Discoveries, developments, advancements, and inventions pouring from Los Alamos make America-and the world-a better and safer place. Roadrunner supercomputer Cray Inc. has delivered a new

  3. Room-temperature ferromagnetism in Cr-doped Si achieved by controlling atomic structure, Cr concentration, and carrier densities: A first-principles study

    SciTech Connect (OSTI)

    Wei, Xin-Yuan; Yang, Zhong-Qin; Zhu, Yan; Li, Yun

    2015-04-28

    By using first-principles calculations, we investigated how to achieve a strong ferromagnetism in Cr-doped Si by controlling the atomic structure and Cr concentration as well as carrier densities. We found that the configuration in which the Cr atom occupies the tetrahedral interstitial site can exist stably and the Cr atom has a large magnetic moment. Using this doping configuration, room-temperature ferromagnetism can be achieved in both n-type and p-type Si by tuning Cr concentration and carrier densities. The results indicate that the carrier density plays a crucial role in realizing strong ferromagnetism in diluted magnetic semiconductors.

  4. Scientific Achievement

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

    Discovered the reactive Leidenfrost' effect in cellulose & transition temperature (750 °C). Structured materials with engineered macropores (e.g. catalysts) allow for its tunable control. Controlling Biomass Leidenfrost Liftoff and Heat Transfer Work w as p erformed a t t he U niversity o f M innesota b y t he g roup o f Dauenhauer Research Details --- Cellulose par=cles levitate above 750 o C from generated v apor fl ow --- Onset o f p ar=cle l evita=on d rama=cally l owers heat t ransfer

  5. Scientific Achievement

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

    introduced the general principles for achieving maximal viola6on of detailed balance in thermal radia6on, i.e. unity difference between direc6onal spectral e missivity a nd a bsorp6vity, a nd w e v alidate them using direct calcula6on on a magneto---op6cal photonic c rystal e mi>er s tructure. Significance and Impact The capability to significantly violate detailed balance points to important new opportuni6es for e n h a n c e d e ffi c i e n c y o f s o l a r c e l l s a n d

  6. Removal to Maximum Extent Practical

    Broader source: Energy.gov [DOE]

    Summary Notes from 1 November 2007 Generic Technical Issue Discussion on Removal of Highly Radioactive Radionuclides/Key Radionuclides to the Maximum Extent Practical

  7. Scientific Achievement

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

    Revealed the zeolite surface structures using molecular simulation and experiment to show that molecular rates in nanoparticle porous materials are controlled by the surface. 2D Surface Structures in Small Zeolite Catalyst Particles Work w as p erformed a t t he U niversity o f M innesota b y t he g roup o f Dauenhauer Research Details --- Molecules permea=ng the surface of porous materials are slowed as they must first locate open s urface p ores --- Molecules entering in small par=cles spend

  8. Scientific Achievement

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

    lectronically c ontrol t he t hermal s pectrum o f a hot surface by coa4ng with a nanostructured graphene layer and varying the carrier density of the graphene sheet. Significance and Impact Modifying the power and spectrum of thermal radia4on without varying the temperature of the surface provides a novel means of thermal management and low cost pathway to create fast, n arrowband M id---IR s ources. Research Details * The polariza,on of the thermal radia,on could also be controlled by changing

  9. Achieving dust lead clearance standards after lead hazard control projects: An evaluation of the HUD-recommended cleaning procedure and an abbreviated alternative

    SciTech Connect (OSTI)

    Dixon, S. ); Tohn, E. ); Rupp, R. ); Clark, S. . Dept. of Environmental Health)

    1999-05-01

    The US Department of Housing and Urban Development's (HUD's) Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing strongly recommend that after lead hazard control interventions all walls, ceiling, floors, and other horizontal surfaces be cleaned using a three-step process to reduce lead-contaminated dust and debris. The three steps are: an initial vacuuming using a machine equipped with a high-efficiency particulate air (HEPA) filter (HEPA vacuum), wet wash with a lead cleaner, and a final HEPA vacuum. This study evaluated the effectiveness of two cleaning protocols: (1) the HUD-recommended three-step procedure, and (2) an abbreviated two-step cleaning procedure that omits the final HEPA vacuum. Cleaning procedures were evaluated in 27 dwelling units that had undergone significant lead hazard control interventions likely to produce lead dust. Dust lead samples were collected on floors and in window sills and troughs prior to the lead control hazard intervention, after the wet wash step of the cleaning procedure, and after completion of the second HEPA vacuuming. The results of the study demonstrate that dust lead surface loading on smooth and cleanable surfaces following the three-step and two-step cleaning procedures can achieve 1995 federal guidance dust clearance levels and levels substantially lower. Although the dust lead clearance rates before and after the second HEPA vacuum were the same, the time saved by omitting the second HEPA is small relative to the other elements of the cleaning process.

  10. Maximum Performance Group MPG | Open Energy Information

    Open Energy Info (EERE)

    Maximum Performance Group MPG Jump to: navigation, search Name: Maximum Performance Group (MPG) Place: College Point, New York Zip: 11356 Product: Technology based energy and asset...

  11. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted...

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

    PRIME Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME Docket No. EO-05-01: Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by ...

  12. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted...

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

    Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 5, 1, 2 SO2 Case Docket No. EO-05-01: Mirant Potomac, Alexandria, Virginia: Maximum Impacts ...

  13. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted...

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

    Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 4, 1, 2 SO2 Case Docket No. EO-05-01: Mirant Potomac, Alexandria, Virginia: Maximum Impacts ...

  14. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted...

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

    Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 3, 1, 2 SO2 Case Docket No. EO-05-01: Mirant Potomac, Alexandria, Virginia: Maximum Impacts ...

  15. A Distributed Approach to Maximum Power Point Tracking for Photovoltaic Submodule Differential Power Processing

    SciTech Connect (OSTI)

    Qin, SB; Cady, ST; Dominguez-Garcia, AD; Pilawa-Podgurski, RCN

    2015-04-01

    This paper presents the theory and implementation of a distributed algorithm for controlling differential power processing converters in photovoltaic (PV) applications. This distributed algorithm achieves true maximum power point tracking of series-connected PV submodules by relying only on local voltage measurements and neighbor-to-neighbor communication between the differential power converters. Compared to previous solutions, the proposed algorithm achieves reduced number of perturbations at each step and potentially faster tracking without adding extra hardware; all these features make this algorithm well-suited for long submodule strings. The formulation of the algorithm, discussion of its properties, as well as three case studies are presented. The performance of the distributed tracking algorithm has been verified via experiments, which yielded quantifiable improvements over other techniques that have been implemented in practice. Both simulations and hardware experiments have confirmed the effectiveness of the proposed distributed algorithm.

  16. Achievement of Low Emissions by Engine Modification to Utilize Gas-to-Liquid Fuel and Advanced Emission Controls on a Class 8 Truck

    SciTech Connect (OSTI)

    Alleman, T. L.; Tennant, C. J.; Hayes, R. R.; Miyasato, M.; Oshinuga, A.; Barton, G.; Rumminger, M.; Duggal, V.; Nelson, C.; Ray, M.; Cherrillo, R. A.

    2005-11-01

    A 2002 Cummins ISM engine was modified to be optimized for operation on gas-to-liquid (GTL) fuel and advanced emission control devices. The engine modifications included increased exhaust gas recirculation (EGR), decreased compression ratio, and reshaped piston and bowl configuration.

  17. Maximum entanglement in squeezed boson and fermion states

    SciTech Connect (OSTI)

    Khanna, F. C.; Malbouisson, J. M. C.; Santana, A. E.; Santos, E. S.

    2007-08-15

    A class of squeezed boson and fermion states is studied with particular emphasis on the nature of entanglement. We first investigate the case of bosons, considering two-mode squeezed states. Then we construct the fermion version to show that such states are maximum entangled, for both bosons and fermions. To achieve these results, we demonstrate some relations involving squeezed boson states. The generalization to the case of fermions is made by using Grassmann variables.

  18. Roadmap to Achieve Energy Delivery Systems Cybersecurity

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

    Roadmap to Achieve Energy Delivery Systems Cybersecurity ii Acknowledgements The Energy Sector Control Systems Working Group (ESCSWG) developed this roadmap in support of the ...

  19. NERSC HPC Achievement Awards

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

    Call for Nominations (2016) 2016 Nomination Form 2015 Recipients 2014 Recipients 2013 Recipients Share Your Research User Submitted Research Citations NERSC Citations Home » Science at NERSC » NERSC HPC Achievement Awards NERSC HPC Achievement Awards The NERSC HPC Achievement Awards are presented annually to recognize extraordinary scientific achievement from NERSC users and to encourage the innovative use of NERSC's High Performance Computing and Data systems. NERSC users, project Principal

  20. Secretary's Achievement Award

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

    team receives DOE Secretary's Achievement Award September 8, 2015 RLUOB Transition Team commended for excellence LOS ALAMOS, N.M., Sept. 8, 2015-The Radiological Laboratory Utility Office Building (RLUOB) Transition Team at Los Alamos National Laboratory received the U.S. Department of Energy Secretary's Achievement Award for its teamwork and performance."What the National Nuclear Security Administration achieved with its contract partner on the RLUOB/REI Project is our goal-safe,

  1. Dilute Clean Diesel Combustion Achieves Low Emissions and High...

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

    Dilute Clean Diesel Combustion Achieves Low Emissions and High Efficiency While Avoiding Control Problems of HCCI Dilute Clean Diesel Combustion Achieves Low Emissions and High ...

  2. for Achieving Programmatic Savings

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

    1: Model for Achieving Programmatic Savings Issues: Issue 1 - EEI Allocation Methodology using TOCAs (affirmed by the group to continue with the status quo). Issue 2 - Two-Year...

  3. Achievements | Argonne National Laboratory

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

    Achievements 2016 Emmy Noether Fellow, Perimeter Institute, Canada, Radja Boughezal 2015 American Physical Society Fellow, James Proudfoot U.S. Department of Energy's Early Career Award, Peter Winter U.S. Department of Energy Secretary's Award for Excellence, NOvA Project Team ATLAS Outstanding Achievement Award, Gary Drake Gruber Cosmology Prize, John Carlstrom 2014 Humboldt Research Award, Carlos E.M. Wagner Universities Research Associate Outstanding Thesis Award, Joseph Grange Springer

  4. Project ACHIEVE final report

    SciTech Connect (OSTI)

    1997-06-13

    Project ACHIEVE was a math/science academic enhancement program aimed at first year high school Hispanic American students. Four high schools -- two in El Paso, Texas and two in Bakersfield, California -- participated in this Department of Energy-funded program during the spring and summer of 1996. Over 50 students, many of whom felt they were facing a nightmare future, were given the opportunity to work closely with personal computers and software, sophisticated calculators, and computer-based laboratories -- an experience which their regular academic curriculum did not provide. Math and science projects, exercises, and experiments were completed that emphasized independent and creative applications of scientific and mathematical theories to real world problems. The most important outcome was the exposure Project ACHIEVE provided to students concerning the college and technical-field career possibilities available to them.

  5. Celebrating student achievement

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

    A great place to work Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Celebrating student achievement Students present research at 16th annual symposium. August 2, 2016 Los Alamos National Laboratory Chemical Engineering student David Parkinson tests a separator used to remove contaminated particles from a plutonium reaction. Los Alamos National Laboratory Chemical Engineering student

  6. Achieving closure at Fernald

    SciTech Connect (OSTI)

    Bradburne, John; Patton, Tisha C.

    2001-02-25

    When Fluor Fernald took over the management of the Fernald Environmental Management Project in 1992, the estimated closure date of the site was more than 25 years into the future. Fluor Fernald, in conjunction with DOE-Fernald, introduced the Accelerated Cleanup Plan, which was designed to substantially shorten that schedule and save taxpayers more than $3 billion. The management of Fluor Fernald believes there are three fundamental concerns that must be addressed by any contractor hoping to achieve closure of a site within the DOE complex. They are relationship management, resource management and contract management. Relationship management refers to the interaction between the site and local residents, regulators, union leadership, the workforce at large, the media, and any other interested stakeholder groups. Resource management is of course related to the effective administration of the site knowledge base and the skills of the workforce, the attraction and retention of qualified a nd competent technical personnel, and the best recognition and use of appropriate new technologies. Perhaps most importantly, resource management must also include a plan for survival in a flat-funding environment. Lastly, creative and disciplined contract management will be essential to effecting the closure of any DOE site. Fluor Fernald, together with DOE-Fernald, is breaking new ground in the closure arena, and ''business as usual'' has become a thing of the past. How Fluor Fernald has managed its work at the site over the last eight years, and how it will manage the new site closure contract in the future, will be an integral part of achieving successful closure at Fernald.

  7. Possible dynamical explanations for Paltridge's principle of maximum entropy production

    SciTech Connect (OSTI)

    Virgo, Nathaniel Ikegami, Takashi

    2014-12-05

    Throughout the history of non-equilibrium thermodynamics a number of theories have been proposed in which complex, far from equilibrium flow systems are hypothesised to reach a steady state that maximises some quantity. Perhaps the most celebrated is Paltridge's principle of maximum entropy production for the horizontal heat flux in Earth's atmosphere, for which there is some empirical support. There have been a number of attempts to derive such a principle from maximum entropy considerations. However, we currently lack a more mechanistic explanation of how any particular system might self-organise into a state that maximises some quantity. This is in contrast to equilibrium thermodynamics, in which models such as the Ising model have been a great help in understanding the relationship between the predictions of MaxEnt and the dynamics of physical systems. In this paper we show that, unlike in the equilibrium case, Paltridge-type maximisation in non-equilibrium systems cannot be achieved by a simple dynamical feedback mechanism. Nevertheless, we propose several possible mechanisms by which maximisation could occur. Showing that these occur in any real system is a task for future work. The possibilities presented here may not be the only ones. We hope that by presenting them we can provoke further discussion about the possible dynamical mechanisms behind extremum principles for non-equilibrium systems, and their relationship to predictions obtained through MaxEnt.

  8. Socioeconomic procurement goals and achievements

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

    Socioeconomic procurement goals and achievements Socioeconomic procurement goals and achievements LANL ensures that a percentage of procurements are placed with small and other...

  9. Electron energy spectrum and maximum disruption angle under multi...

    Office of Scientific and Technical Information (OSTI)

    Conference: Electron energy spectrum and maximum disruption angle under multi-photon beamstrahlung Citation Details In-Document Search Title: Electron energy spectrum and maximum ...

  10. Electron energy spectrum and maximum disruption angle under multi...

    Office of Scientific and Technical Information (OSTI)

    Electron energy spectrum and maximum disruption angle under multi-photon beamstrahlung Citation Details In-Document Search Title: Electron energy spectrum and maximum disruption ...

  11. Oxidation State Optimization for Maximum Efficiency of NOx Adsorber...

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

    State Optimization for Maximum Efficiency of NOx Adsorber Catalysts Oxidation State Optimization for Maximum Efficiency of NOx Adsorber Catalysts Presentation given at the 16th ...

  12. Theoretical Estimate of Maximum Possible Nuclear Explosion

    DOE R&D Accomplishments [OSTI]

    Bethe, H. A.

    1950-01-31

    The maximum nuclear accident which could occur in a Na-cooled, Be moderated, Pu and power producing reactor is estimated theoretically. (T.R.H.) 2O82 Results of nuclear calculations for a variety of compositions of fast, heterogeneous, sodium-cooled, U-235-fueled, plutonium- and power-producing reactors are reported. Core compositions typical of plate-, pin-, or wire-type fuel elements and with uranium as metal, alloy, and oxide were considered. These compositions included atom ratios in the following range: U-23B to U-235 from 2 to 8; sodium to U-235 from 1.5 to 12; iron to U-235 from 5 to 18; and vanadium to U-235 from 11 to 33. Calculations were performed to determine the effect of lead and iron reflectors between the core and blanket. Both natural and depleted uranium were evaluated as the blanket fertile material. Reactors were compared on a basis of conversion ratio, specific power, and the product of both. The calculated results are in general agreement with the experimental results from fast reactor assemblies. An analysis of the effect of new cross-section values as they became available is included. (auth)

  13. TRENDS IN ESTIMATED MIXING DEPTH DAILY MAXIMUMS

    SciTech Connect (OSTI)

    Buckley, R; Amy DuPont, A; Robert Kurzeja, R; Matt Parker, M

    2007-11-12

    Mixing depth is an important quantity in the determination of air pollution concentrations. Fireweather forecasts depend strongly on estimates of the mixing depth as a means of determining the altitude and dilution (ventilation rates) of smoke plumes. The Savannah River United States Forest Service (USFS) routinely conducts prescribed fires at the Savannah River Site (SRS), a heavily wooded Department of Energy (DOE) facility located in southwest South Carolina. For many years, the Savannah River National Laboratory (SRNL) has provided forecasts of weather conditions in support of the fire program, including an estimated mixing depth using potential temperature and turbulence change with height at a given location. This paper examines trends in the average estimated mixing depth daily maximum at the SRS over an extended period of time (4.75 years) derived from numerical atmospheric simulations using two versions of the Regional Atmospheric Modeling System (RAMS). This allows for differences to be seen between the model versions, as well as trends on a multi-year time frame. In addition, comparisons of predicted mixing depth for individual days in which special balloon soundings were released are also discussed.

  14. Who We Are - Achievements - JCAP

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

    0-Achievements-Hero_v2.jpg Our Achievements Who We Are Overview Achievements Our People Who we are Overview JCAP Mission JCAP At A Glance Fact Sheets Organizational Chart Our Achievements Recent Science Technology Transfer Awards & Honors Our People Senior Management Scientific Leadership Researchers Governance & Advisory Boards Operations & Administration Summary of JCAP Accomplishments and Capabilities: Protective coatings for photoelectrodes High-throughput material discovery New

  15. Maximum entropy models of ecosystem functioning

    SciTech Connect (OSTI)

    Bertram, Jason

    2014-12-05

    Using organism-level traits to deduce community-level relationships is a fundamental problem in theoretical ecology. This problem parallels the physical one of using particle properties to deduce macroscopic thermodynamic laws, which was successfully achieved with the development of statistical physics. Drawing on this parallel, theoretical ecologists from Lotka onwards have attempted to construct statistical mechanistic theories of ecosystem functioning. Jaynes’ broader interpretation of statistical mechanics, which hinges on the entropy maximisation algorithm (MaxEnt), is of central importance here because the classical foundations of statistical physics do not have clear ecological analogues (e.g. phase space, dynamical invariants). However, models based on the information theoretic interpretation of MaxEnt are difficult to interpret ecologically. Here I give a broad discussion of statistical mechanical models of ecosystem functioning and the application of MaxEnt in these models. Emphasising the sample frequency interpretation of MaxEnt, I show that MaxEnt can be used to construct models of ecosystem functioning which are statistical mechanical in the traditional sense using a savanna plant ecology model as an example.

  16. Property:Maximum Velocity(m/s) | Open Energy Information

    Open Energy Info (EERE)

    Velocity(ms) Jump to: navigation, search Property Name Maximum Velocity(ms) Property Type String Pages using the property "Maximum Velocity(ms)" Showing 25 pages using this...

  17. Property:Maximum Wave Length(m) | Open Energy Information

    Open Energy Info (EERE)

    Length(m) Jump to: navigation, search Property Name Maximum Wave Length(m) Property Type String Pages using the property "Maximum Wave Length(m)" Showing 18 pages using this...

  18. Property:Maximum Wave Height(m) | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Property Name Maximum Wave Height(m) Property Type String Pages using the property "Maximum Wave Height(m)" Showing 25 pages using this property....

  19. Controlling

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

    Controlling chaos in low- and high-dimensional systems with periodic parametric perturbations K. A. Mirus and J. C. Sprott Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 ͑Received 29 June 1998͒ The effect of applying a periodic perturbation to an accessible parameter of various chaotic systems is examined. Numerical results indicate that perturbation frequencies near the natural frequencies of the unstable periodic orbits of the chaotic systems can result in limit

  20. Roadmap to Achieve Energy Delivery Systems Cybersecurity

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

    Roadmap to Achieve Energy Delivery Systems Cybersecurity ii Acknowledgements The Energy Sector Control Systems Working Group (ESCSWG) developed this roadmap in support of the Electricity Sub-sector Coordinating Council, Oil and Natural Gas Sector Coordinating Council, and the Government Coordinating Council for Energy under the Critical Infrastructure Partnership Advisory Council (CIPAC) Framework; the roadmap has been approved for release by these councils. The ESCSWG members volunteered their

  1. Dilute Clean Diesel Combustion Achieves Low Emissions and High Efficiency

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

    While Avoiding Control Problems of HCCI | Department of Energy Dilute Clean Diesel Combustion Achieves Low Emissions and High Efficiency While Avoiding Control Problems of HCCI Dilute Clean Diesel Combustion Achieves Low Emissions and High Efficiency While Avoiding Control Problems of HCCI 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_mueller.pdf (572.11 KB) More Documents & Publications Multicylinder Diesel Engine Design for HCCI Operation

  2. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by

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

    AERMOD-PRIME | Department of Energy PRIME Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME Docket No. EO-05-01: Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Compliance based on highest, second-highest, short-term, and highest annual concentrations. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME (24.52

  3. NERSC Achievement Award Recipient Presentations

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

    Achievement Awards NERSC Achievement Award Recipient Presentations February 4, 2014 Downloads vonug14.pdf | Adobe Acrobat PDF file Conformational change in biology: from amino acids to enzymes and molecular motors, Victor Ovchinnikov, Harvard University JainNERSCUserDay2.pdf | Adobe Acrobat PDF file Innovative use of High Performance Computing through the Modeling of Particle Accelerators, Jean-Luc Vay, Berkeley Lab JainNERSCUserDay2.pdf | Adobe Acrobat PDF file The Materials Project, FireWorks,

  4. 2013 HPC Achievement Award Recipients

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

    2013 Recipients 2013 HPC Achievement Award Recipients 2013 Award Recipients The Department of Energy's National Energy Research Scientific Computing Center (NERSC) announced the winners of their inaugural High Performance Computing (HPC) Achievement Awards on Wednesday at the annual NERSC User Group meeting at the Lawrence Berkeley National Laboratory (Berkeley Lab). The awardees are all NERSC users who have either demonstrated an innovative use of HPC resources to solve a scientific problem, or

  5. Montana Total Maximum Daily Load Development Projects Wiki |...

    Open Energy Info (EERE)

    Wiki Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Montana Total Maximum Daily Load Development Projects Wiki Abstract Provides information on...

  6. Laser selection based on maximum permissible exposure limits...

    Office of Scientific and Technical Information (OSTI)

    Laser selection based on maximum permissible exposure limits for visible and middle-near infrared repetitively pulsed lasers. Citation Details In-Document Search Title: Laser ...

  7. Engineer End Uses for Maximum Efficiency | Department of Energy

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

    for Maximum Efficiency (August 2004) More Documents & Publications Maintaining System Air Quality Compressed Air Storage Strategies Alternative Strategies for Low Pressure End Uses

  8. Property:Achievement Date | Open Energy Information

    Open Energy Info (EERE)

    Achievement Date Jump to: navigation, search Property Name Achievement Date Property Type String Retrieved from "http:en.openei.orgwindex.php?titleProperty:AchievementDate&ol...

  9. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by

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

    AERMOD-PRIME, Units 3, 1, 2 SO2 Case | Department of Energy PRIME, Units 3, 1, 2 SO2 Case Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 3, 1, 2 SO2 Case Docket No. EO-05-01: Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 3, 1, 2 SO2 Case. Compliance based on highest, second-highest, short-term, and highest annual concentrations. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME,

  10. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by

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

    AERMOD-PRIME, Units 4, 1, 2 SO2 Case | Department of Energy 4, 1, 2 SO2 Case Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 4, 1, 2 SO2 Case Docket No. EO-05-01: Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 4, 1, 2 SO2 Case. Compliance based on highest, second-highest, short-term, and highest annual concentrations. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 4, 1, 2

  11. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by

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

    AERMOD-PRIME, Units 5, 1, 2 SO2 Case | Department of Energy 5, 1, 2 SO2 Case Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 5, 1, 2 SO2 Case Docket No. EO-05-01: Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 5, 1, 2 SO2 Case. Compliance based on highest, second-highest, short-term, and highest annual concentrations. Mirant Potomac, Alexandria, Virginia: Maximum Impacts Predicted by AERMOD-PRIME, Units 5, 1, 2

  12. Secretary's 2013 Achievement Awards | Department of Energy

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

    3 Achievement Awards Secretary's 2013 Achievement Awards Interdisciplinary Science Building Project (Office of Science) (769.11 KB) More Documents & Publications Secretary's 2013 Achievement Awards Secretary's 2013 Achievement Awards Secretary's 2014

  13. Secretary's 2014 Achievement Awards | Department of Energy

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

    Secretary's 2014 Achievement Awards Secretary's 2014 Achievement Awards Energy Sciences Building (ESB) Project (Office of Science) (921.45 KB) More Documents & Publications 2014 Awards for Project Management Secretary's 2013 Achievement Awards Secretary's 2014 Achievement Awards

  14. Secretary's Achievment Award | Department of Energy

    Office of Environmental Management (EM)

    Achievment Award Secretary's Achievment Award Office of Environmental Management K-33 gaseous Diffusion Process building Project.pdf (224.26 KB) More Documents & Publications Secretary's Achievement Award PM Workshop 2012 Awards Recognition - Secretary's Awards Secretary's Achievement Award

  15. Maximum Photovoltaic Penetration Levels on Typical Distribution Feeders: Preprint

    SciTech Connect (OSTI)

    Hoke, A.; Butler, R.; Hambrick, J.; Kroposki, B.

    2012-07-01

    This paper presents simulation results for a taxonomy of typical distribution feeders with various levels of photovoltaic (PV) penetration. For each of the 16 feeders simulated, the maximum PV penetration that did not result in steady-state voltage or current violation is presented for several PV location scenarios: clustered near the feeder source, clustered near the midpoint of the feeder, clustered near the end of the feeder, randomly located, and evenly distributed. In addition, the maximum level of PV is presented for single, large PV systems at each location. Maximum PV penetration was determined by requiring that feeder voltages stay within ANSI Range A and that feeder currents stay within the ranges determined by overcurrent protection devices. Simulations were run in GridLAB-D using hourly time steps over a year with randomized load profiles based on utility data and typical meteorological year weather data. For 86% of the cases simulated, maximum PV penetration was at least 30% of peak load.

  16. Table 10.1 Nonswitchable Minimum and Maximum Consumption, 2002

    U.S. Energy Information Administration (EIA) Indexed Site

    Nonswitchable Minimum and Maximum Consumption, 2002; " " Level: National and Regional Data;" " Row: Energy Sources;" " Column: Consumption Potential;" " Unit: Physical Units." ,,,,"RSE" ,"Actual","Minimum","Maximum","Row" "Energy Sources","Consumption","Consumption(a)","Consumption(b)","Factors" ,"Total United States" "RSE Column

  17. Oxidation State Optimization for Maximum Efficiency of NOx Adsorber

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

    Catalysts | Department of Energy State Optimization for Maximum Efficiency of NOx Adsorber Catalysts Oxidation State Optimization for Maximum Efficiency of NOx Adsorber Catalysts Presentation given at the 16th Directions in Engine-Efficiency and Emissions Research (DEER) Conference in Detroit, MI, September 27-30, 2010. deer10_li.pdf (1.68 MB) More Documents & Publications Lean NOx Trap Regeneration Selectivity Towards N2O -- Similarities and Differences Between H2, CO and C3H6

  18. Quality, precision and accuracy of the maximum No. 40 anemometer

    SciTech Connect (OSTI)

    Obermeir, J.; Blittersdorf, D.

    1996-12-31

    This paper synthesizes available calibration data for the Maximum No. 40 anemometer. Despite its long history in the wind industry, controversy surrounds the choice of transfer function for this anemometer. Many users are unaware that recent changes in default transfer functions in data loggers are producing output wind speed differences as large as 7.6%. Comparison of two calibration methods used for large samples of Maximum No. 40 anemometers shows a consistent difference of 4.6% in output speeds. This difference is significantly larger than estimated uncertainty levels. Testing, initially performed to investigate related issues, reveals that Gill and Maximum cup anemometers change their calibration transfer functions significantly when calibrated in the open atmosphere compared with calibration in a laminar wind tunnel. This indicates that atmospheric turbulence changes the calibration transfer function of cup anemometers. These results call into question the suitability of standard wind tunnel calibration testing for cup anemometers. 6 refs., 10 figs., 4 tabs.

  19. Our Research Achievements | Department of Energy

    Energy Savers [EERE]

    Benefits of Research Our Research Achievements Our Research Achievements April 2, 2013 Coal Combustion Products Coal combustion products (CCPs) are solid materials produced when ...

  20. LITERATURE REVIEW ON MAXIMUM LOADING OF RADIONUCLIDES ON CRYSTALLINE SILICOTITANATE

    SciTech Connect (OSTI)

    Adu-Wusu, K.; Pennebaker, F.

    2010-10-13

    Plans are underway to use small column ion exchange (SCIX) units installed in high-level waste tanks to remove Cs-137 from highly alkaline salt solutions at Savannah River Site. The ion exchange material slated for the SCIX project is engineered or granular crystalline silicotitanate (CST). Information on the maximum loading of radionuclides on CST is needed by Savannah River Remediation for safety evaluations. A literature review has been conducted that culminated in the estimation of the maximum loading of all but one of the radionuclides of interest (Cs-137, Sr-90, Ba-137m, Pu-238, Pu-239, Pu-240, Pu-241, Am-241, and Cm-244). No data was found for Cm-244.

  1. Maximum patch method for directional dark matter detection

    SciTech Connect (OSTI)

    Henderson, Shawn; Monroe, Jocelyn; Fisher, Peter [Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Laboratory for Nuclear Science, MIT Kavli Institute for Astrophysics and Space Research, Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

    2008-07-01

    Present and planned dark matter detection experiments search for WIMP-induced nuclear recoils in poorly known background conditions. In this environment, the maximum gap statistical method provides a way of setting more sensitive cross section upper limits by incorporating known signal information. We give a recipe for the numerical calculation of upper limits for planned directional dark matter detection experiments, that will measure both recoil energy and angle, based on the gaps between events in two-dimensional phase space.

  2. Industry guidelines for the calibration of maximum anemometers

    SciTech Connect (OSTI)

    Bailey, B.H.

    1996-12-31

    The purpose of this paper is to report on a framework of guidelines for the calibration of the Maximum Type 40 anemometer. This anemometer model is the wind speed sensor of choice in the majority of wind resource assessment programs in the U.S. These guidelines were established by the Utility Wind Resource Assessment Program. In addition to providing guidelines for anemometers, the appropriate use of non-calibrated anemometers is also discussed. 14 refs., 1 tab.

  3. Maximum Entry and Mandatory Separation Ages for Certain Security Employees

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

    2001-10-11

    The policy establishes the DOE policy on maximum entry and mandatory separation ages for primary or secondary positions covered under special statutory retirement provisions and for those employees whose primary duties are the protection of officials of the United States against threats to personal safety or the investigation, apprehension, and detention of individuals suspected or convicted of offenses against the criminal laws of the United States. Admin Chg 1, dated 12-1-11, supersedes DOE P 310.1.

  4. Secretary's 2013 Achievement Awards: | Department of Energy

    Office of Environmental Management (EM)

    Energy Systems Integration Facility Project (Office of Energy Efficiency and Renewable Energy) (936.45 KB) More Documents & Publications Secretary's 2013 Achievement Awards: Secretary's 2013 Achievement Awards 2014 Awards for Project Management

  5. Secretary's Achievement Award | Department of Energy

    Office of Environmental Management (EM)

    Environmental Management Idaho Nuclear facility Decontamination & Decommissioning Project.pdf (225.65 KB) More Documents & Publications Secretary's Achievment Award Secretary's Achievement Award PM Workshop 2012 Awards Recognition - Secretary's Awards

  6. CONTROL SYSTEM FOR ISOTOPE SEPARATING APPARATUS

    DOE Patents [OSTI]

    Barnes, S.W.

    1960-01-26

    A method is described for controlling the position of the ion beams in a calutron used for isotope separation. The U/sup 238/ beams is centered over the U/sup 235/ receiving pocket, the operator monitoring the beam until a maximum reading is achieved on the meter connected to that pocket. Then both beams are simultaneously shifted by a preselected amount to move the U/sup 235/ beam over the U/sup 235/ pocket. A slotted door is placed over the entrance to that pocket during the U/sup 238/ beam centering to reduce the contamination to the pocket, while allowing enough beam to pass for monitoring purposes.

  7. NERSC Announces Second Annual HPC Achievement Awards

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

    Announces Second Annual HPC Achievement Awards NERSC Announces Second Annual HPC Achievement Awards February 4, 2014 Jon Bashor, jbashor@lbl.gov, +1 510 486 5849 XBD201402-00246.jpg Ted Kisner (International Planck Collaboration), Jean-Luc Vay and Anubhav Jain accept their NERSC Achievement awards. The Department of Energy's National Energy Research Scientific Computing Center (NERSC) announced the winners of its second annual High Performance Computing (HPC) Achievement Awards on Feb. 4, 2014,

  8. Measuring Energy Achievements | Department of Energy

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

    Measuring Energy Achievements Measuring Energy Achievements This presentation covers types of energy measurements essential to industrial facilities and discusses the benefits of metrics. ArcelorMittal provides examples from their experience measuring energy achievements. Measuring Energy Achievements (September 8, 2010) (1013.62 KB) More Documents & Publications "Just do it (replicate)" with Plans, Tools, and Resources Capturing Waste Gas: Saves Energy, Lower Costs - Case Study,

  9. Secretary's Achievement Award | Department of Energy

    Office of Environmental Management (EM)

    icon Office of Environmental Management Idaho Nuclear facility Decontamination & Decommissioning Project.pdf More Documents & Publications Secretary's Achievment Award...

  10. Maximum Likelihood Analysis of Low Energy CDMS II Germanium Data

    SciTech Connect (OSTI)

    Agnese, R.

    2015-03-30

    We report on the results of a search for a Weakly Interacting Massive Particle (WIMP) signal in low-energy data of the Cryogenic Dark Matter Search experiment using a maximum likelihood analysis. A background model is constructed using GEANT4 to simulate the surface-event background from Pb210decay-chain events, while using independent calibration data to model the gamma background. Fitting this background model to the data results in no statistically significant WIMP component. In addition, we also perform fits using an analytic ad hoc background model proposed by Collar and Fields, who claimed to find a large excess of signal-like events in our data. Finally, we confirm the strong preference for a signal hypothesis in their analysis under these assumptions, but excesses are observed in both single- and multiple-scatter events, which implies the signal is not caused by WIMPs, but rather reflects the inadequacy of their background model.

  11. Reduction in maximum time uncertainty of paired time signals

    DOE Patents [OSTI]

    Theodosiou, G.E.; Dawson, J.W.

    1983-10-04

    Reduction in the maximum time uncertainty (t[sub max]--t[sub min]) of a series of paired time signals t[sub 1] and t[sub 2] varying between two input terminals and representative of a series of single events where t[sub 1][<=]t[sub 2] and t[sub 1]+t[sub 2] equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t[sub min]) of the first signal t[sub 1] closer to t[sub max] and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20--800. 6 figs.

  12. Reduction in maximum time uncertainty of paired time signals

    DOE Patents [OSTI]

    Theodosiou, George E.; Dawson, John W.

    1983-01-01

    Reduction in the maximum time uncertainty (t.sub.max -t.sub.min) of a series of paired time signals t.sub.1 and t.sub.2 varying between two input terminals and representative of a series of single events where t.sub.1 .ltoreq.t.sub.2 and t.sub.1 +t.sub.2 equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t.sub.min) of the first signal t.sub.1 closer to t.sub.max and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20-800.

  13. Reduction in maximum time uncertainty of paired time signals

    DOE Patents [OSTI]

    Theodosiou, G.E.; Dawson, J.W.

    1981-02-11

    Reduction in the maximum time uncertainty (t/sub max/ - t/sub min/) of a series of paired time signals t/sub 1/ and t/sub 2/ varying between two input terminals and representative of a series of single events where t/sub 1/ less than or equal to t/sub 2/ and t/sub 1/ + t/sub 2/ equals a constant, is carried out with a circuit utilizing a combination of OR and AND gates as signal selecting means and one or more time delays to increase the minimum value (t/sub min/) of the first signal t/sub 1/ closer to t/sub max/ and thereby reduce the difference. The circuit may utilize a plurality of stages to reduce the uncertainty by factors of 20 to 800.

  14. Speech processing using conditional observable maximum likelihood continuity mapping

    DOE Patents [OSTI]

    Hogden, John; Nix, David

    2004-01-13

    A computer implemented method enables the recognition of speech and speech characteristics. Parameters are initialized of first probability density functions that map between the symbols in the vocabulary of one or more sequences of speech codes that represent speech sounds and a continuity map. Parameters are also initialized of second probability density functions that map between the elements in the vocabulary of one or more desired sequences of speech transcription symbols and the continuity map. The parameters of the probability density functions are then trained to maximize the probabilities of the desired sequences of speech-transcription symbols. A new sequence of speech codes is then input to the continuity map having the trained first and second probability function parameters. A smooth path is identified on the continuity map that has the maximum probability for the new sequence of speech codes. The probability of each speech transcription symbol for each input speech code can then be output.

  15. Property:Maximum Velocity with Constriction(m/s) | Open Energy...

    Open Energy Info (EERE)

    Velocity with Constriction(ms) Jump to: navigation, search Property Name Maximum Velocity with Constriction(ms) Property Type String Pages using the property "Maximum Velocity...

  16. Maximum U.S. Active Seismic Crew Counts

    Gasoline and Diesel Fuel Update (EIA)

    Marine Fuel Choice for Ocean- Going Vessels within Emissions Control Areas June 2015 Independent Statistics & Analysis www.eia.gov U.S. Department of Energy Washington, DC 20585 U.S. Energy Information Administration | Marine fuel choice for ocean going vessels within emissions control areas i This report was prepared by the U.S. Energy Information Administration (EIA), the statistical and analytical agency within the U.S. Department of Energy. By law, EIA's data, analyses, and forecasts are

  17. Maximum Reasonable Radioxenon Releases from Medical Isotope Production Facilities and Their Effect on Monitoring Nuclear Explosions

    SciTech Connect (OSTI)

    Bowyer, Ted W.; Kephart, Rosara F.; Eslinger, Paul W.; Friese, Judah I.; Miley, Harry S.; Saey, Paul R.

    2013-01-01

    Fission gases such as 133Xe are used extensively for monitoring the world for signs of nuclear testing in systems such as the International Monitoring System (IMS). These gases are also produced by nuclear reactors and by fission production of 99Mo for medical use. Recently, medical isotope production facilities have been identified as the major contributor to the background of radioactive xenon isotopes (radioxenon) in the atmosphere (Saey, et al., 2009). These releases pose a potential future problem for monitoring nuclear explosions if not addressed. As a starting point, a maximum acceptable daily xenon emission rate was calculated, that is both scientifically defendable as not adversely affecting the IMS, but also consistent with what is possible to achieve in an operational environment. This study concludes that an emission of 5×109 Bq/day from a medical isotope production facility would be both an acceptable upper limit from the perspective of minimal impact to monitoring stations, but also appears to be an achievable limit for large isotope producers.

  18. Robust Maximum Lifetime Routing and Energy Allocation in Wireless Sensor Networks

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Paschalidis, Ioannis Ch.; Wu, Ruomin

    2012-01-01

    We consider the maximum lifetime routing problem in wireless sensor networks in two settings: (a) when nodes’ initial energy is given and (b) when it is subject to optimization. The optimal solution and objective value provide optimal flows and the corresponding predicted lifetime, respectively. We stipulate that there is uncertainty in various network parameters (available energy and energy depletion rates). In setting (a) we show that for specific, yet typical, network topologies, the actual network lifetime will reach the predicted value with a probability that converges to zero as the number of nodes grows large. In setting (b) the samemore » result holds for all topologies. We develop a series of robust problem formulations, ranging from pessimistic to optimistic. A set of parameters enable the tuning of the conservatism of the formulation to obtain network flows with a desirably high probability that the corresponding lifetime prediction is achieved. We establish a number of properties for the robust network flows and energy allocations and provide numerical results to highlight the tradeoff between predicted lifetime and the probability achieved. Further, we analyze an interesting limiting regime of massively deployed sensor networks and essentially solve a continuous version of the problem.« less

  19. Secretary's Achievement Award (IBL) | Department of Energy

    Office of Environmental Management (EM)

    IBL) Secretary's Achievement Award (IBL) Secretary’s Achievement Award (IBL) Presented to: The National Nuclear Security Administration Ion Beam Laboratory Project The Ion Beam Laboratory project team is recognized for delivering this state-of-the-art facility six months ahead of schedule and nearly $6 million dollars under budget. This was accomplished while achieving LEED Gold certification. Through the exceptionally close working relationships between all project stakeholders, the

  20. Keeping Impact As Low As Reasonably Achievable

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

    Long-Term Environmental Stewardship and Sustainability Strategy is to keep the impact of past, present, and future operations as low as reasonably achievable. Examples of the...

  1. Achieving atomistic understanding of solvation dynamics from...

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

    Mechanics and Quantum Mechanical Molecular Mechanics calculations, we have been ... Achieving atomistic understanding of solvation dynamics from X-ray free-electron laser ...

  2. Princeton Plasma Physics Laboratory achieves milestone, completing...

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

    Princeton Plasma Physics Laboratory achieves milestone, completing first part of heart of ... Engineers and technicians at the U.S. Department of Energy's Princeton Plasma Physics ...

  3. Secretary's Achievment Award | Department of Energy

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

    Office of Environmental Management K-33 gaseous Diffusion Process building Project.pdf More Documents & Publications Secretary's Achievement Award PM Workshop 2012 Awards...

  4. Achieving Water-Sustainable Bioenergy Production | Department...

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

    Production Breakout Session 3-A: Growing a Water-Smart Bioeconomy Achieving Water-Sustainable Bioenergy Production May Wu, Principal Environmental System Analyst in the...

  5. Achievement Award Certificate Templates | Department of Energy

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

    The Office of Energy Efficiency and Renewable Energy (EERE) has designed basic templates for awarding certificates of achievement. The templates are Microsoft Word files, and all ...

  6. Savannah River Analytical Laboratories Achieve International...

    National Nuclear Security Administration (NNSA)

    Savannah River Analytical Laboratories Achieve International Standard Accreditation Tuesday, September 8, 2015 - 12:55pm Savannah River National Laboratory's FH Analytical ...

  7. NETL Scientist Earns Prestigious Technical Achievement Award

    Broader source: Energy.gov [DOE]

    NETL's Dr. Ziomek-Moroz received a 2013 Technical Achievement Award from NACE International, the Corrosion Society,in recognition of her work in corrosion science.

  8. Preparing for Project Implementation Measuring Energy Achievements...

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

    Energy Achievements Save Energy Now LEADER Web Conference Project Implementation Seminar Series Save Energy Now LEADER Web Conference Agenda Seminar Series Overview ...

  9. Estimate of Maximum Underground Working Gas Storage Capacity in the United States

    Reports and Publications (EIA)

    2006-01-01

    This report examines the aggregate maximum capacity for U.S. natural gas storage. Although the concept of maximum capacity seems quite straightforward, there are numerous issues that preclude the determination of a definitive maximum volume. The report presents three alternative estimates for maximum capacity, indicating appropriate caveats for each.

  10. Maximum Likelihood Analysis of Low Energy CDMS II Germanium Data

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Agnese, R.

    2015-03-30

    We report on the results of a search for a Weakly Interacting Massive Particle (WIMP) signal in low-energy data of the Cryogenic Dark Matter Search experiment using a maximum likelihood analysis. A background model is constructed using GEANT4 to simulate the surface-event background from Pb210decay-chain events, while using independent calibration data to model the gamma background. Fitting this background model to the data results in no statistically significant WIMP component. In addition, we also perform fits using an analytic ad hoc background model proposed by Collar and Fields, who claimed to find a large excess of signal-like events in ourmore » data. Finally, we confirm the strong preference for a signal hypothesis in their analysis under these assumptions, but excesses are observed in both single- and multiple-scatter events, which implies the signal is not caused by WIMPs, but rather reflects the inadequacy of their background model.« less

  11. Evaluation of a photovoltaic energy mechatronics system with a built-in quadratic maximum power point tracking algorithm

    SciTech Connect (OSTI)

    Chao, R.M.; Ko, S.H.; Lin, I.H.; Pai, F.S.; Chang, C.C.

    2009-12-15

    The historically high cost of crude oil price is stimulating research into solar (green) energy as an alternative energy source. In general, applications with large solar energy output require a maximum power point tracking (MPPT) algorithm to optimize the power generated by the photovoltaic effect. This work aims to provide a stand-alone solution for solar energy applications by integrating a DC/DC buck converter to a newly developed quadratic MPPT algorithm along with its appropriate software and hardware. The quadratic MPPT method utilizes three previously used duty cycles with their corresponding power outputs. It approaches the maximum value by using a second order polynomial formula, which converges faster than the existing MPPT algorithm. The hardware implementation takes advantage of the real-time controller system from National Instruments, USA. Experimental results have shown that the proposed solar mechatronics system can correctly and effectively track the maximum power point without any difficulties. (author)

  12. Secretary's 2013 Achievement Awards: | Department of Energy

    Office of Environmental Management (EM)

    Saltstone Disposal Units 3&5 Project (Office of Environmental Management) (794.11 KB) More Documents & Publications Secretary's 2013 Achievement Awards: Secretary's 2013 Achievement Awards PM Perspective & Awards Presentations - David Klaus, Deputy Under Secretary for Mgt & Performance

  13. CONTROL AND FAULT DETECTOR CIRCUIT

    DOE Patents [OSTI]

    Winningstad, C.N.

    1958-04-01

    A power control and fault detectcr circuit for a radiofrequency system is described. The operation of the circuit controls the power output of a radio- frequency power supply to automatically start the flow of energizing power to the radio-frequency power supply and to gradually increase the power to a predetermined level which is below the point where destruction occurs upon the happening of a fault. If the radio-frequency power supply output fails to increase during such period, the control does not further increase the power. On the other hand, if the output of the radio-frequency power supply properly increases, then the control continues to increase the power to a maximum value. After the maximumn value of radio-frequency output has been achieved. the control is responsive to a ''fault,'' such as a short circuit in the radio-frequency system being driven, so that the flow of power is interrupted for an interval before the cycle is repeated.

  14. Weakest solar wind of the space age and the current 'MINI' solar maximum

    SciTech Connect (OSTI)

    McComas, D. J.; Angold, N.; Elliott, H. A.; Livadiotis, G.; Schwadron, N. A.; Smith, C. W.; Skoug, R. M.

    2013-12-10

    The last solar minimum, which extended into 2009, was especially deep and prolonged. Since then, sunspot activity has gone through a very small peak while the heliospheric current sheet achieved large tilt angles similar to prior solar maxima. The solar wind fluid properties and interplanetary magnetic field (IMF) have declined through the prolonged solar minimum and continued to be low through the current mini solar maximum. Compared to values typically observed from the mid-1970s through the mid-1990s, the following proton parameters are lower on average from 2009 through day 79 of 2013: solar wind speed and beta (?11%), temperature (?40%), thermal pressure (?55%), mass flux (?34%), momentum flux or dynamic pressure (?41%), energy flux (?48%), IMF magnitude (?31%), and radial component of the IMF (?38%). These results have important implications for the solar wind's interaction with planetary magnetospheres and the heliosphere's interaction with the local interstellar medium, with the proton dynamic pressure remaining near the lowest values observed in the space age: ?1.4 nPa, compared to ?2.4 nPa typically observed from the mid-1970s through the mid-1990s. The combination of lower magnetic flux emergence from the Sun (carried out in the solar wind as the IMF) and associated low power in the solar wind points to the causal relationship between them. Our results indicate that the low solar wind output is driven by an internal trend in the Sun that is longer than the ?11 yr solar cycle, and they suggest that this current weak solar maximum is driven by the same trend.

  15. Greenidge multi-pollutant project achieves emissions reduction goals

    SciTech Connect (OSTI)

    2008-07-01

    Performance testing at the Greenridge Multi-Pollutant Project has met or exceeded project goals, indicating that deep emission reduciton sin small, difficult-to-retrofit power plants can be achieved. The technology fitted at the 107 MWe AES Greenridge Unit 4 includes a hybrid selective non-catalytic reduction/selective catalytic reduction system for NOx control (NOxOUT CASCADE) and a Turbosorp circulating fluidized bed dry scrubber system for SO{sub 2}, mercury, SO{sub 3} HC and Hf control. 2 figs.

  16. Achieving and Demonstrating Vehicle Technologies Engine Fuel...

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

    Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C. PDF icon ace16wagner.pdf More Documents & Publications Achieving and Demonstrating Vehicle Technologies ...

  17. From Earth to Saturn: Los Alamos Achievements

    SciTech Connect (OSTI)

    McMillan, Charlie; Wilson, Cathy; Nekimkem, Howard; Martinez, Johnnie; Martz, Joe; Albright, Brian

    2008-06-26

    A compilation of some of the remarkable achievements of Los Alamos National Laboratory staff over the past 12 months. Originally aired in the June 26, 2008 Director's all-employee meeting.

  18. Secretary's Achievement Award | Department of Energy

    Office of Environmental Management (EM)

    Science Daya Bay reactor Neutrino Detector Project.pdf (224.38 KB) More Documents & Publications 2012 Awards for Project Management PM Workshop 2012 Awards Recognition - Secretary's Awards Secretary's Achievement Award

  19. Achieving Water-Sustainable Bioenergy Production

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

    BioEnergy 2015: Opportunities in a Changing Energy Landscape Achieving Water-Sustainable Bioenergy Production May Wu Argonne National Laboratory Session 3-A: Growing a Water-Smart ...

  20. From Earth to Saturn: Los Alamos Achievements

    ScienceCinema (OSTI)

    McMillan, Charlie; Wilson, Cathy; Nekimkem, Howard; Martinez, Johnnie; Martz, Joe; Albright, Brian

    2014-08-13

    A compilation of some of the remarkable achievements of Los Alamos National Laboratory staff over the past 12 months. Originally aired in the June 26, 2008 Director's all-employee meeting.

  1. Total Estimated Contract Cost: Contract Option Period: Maximum Fee

    Office of Environmental Management (EM)

    Definition and Scope Answer/Comment 1 What significant policy challenges are likely to remain unaddressed if we employ Title XIII's definition? The following points are not referencedd in EISA 1301. ・Power provider should also control the output fluctuation of renewable resources. ・The end user should have the choice of which form of power storage to be used. Certain types of energy conservation and storage could work better in different applications (e.g. not only electricity power but also

  2. NERSC Intern Wins Award for Computing Achievement

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

    Intern Wins Award for Computing Achievement NERSC Intern Wins Award for Computing Achievement March 27, 2013 Linda Vu, lvu@lbl.gov, +1 510 495 2402 ncwit1 Stephanie Cabanela, a student intern in the National Energy Research Scientific Computing Center's (NERSC) Operation Technologies Group was honored with the Bay Area Affiliate National Center for Women and Information Technology (NCWIT) Aspirations in Computing award on Saturday, March 16, 2013 in a ceremony in San Jose, CA. The award honors

  3. Savannah River Analytical Laboratories Achieve International Standard

    National Nuclear Security Administration (NNSA)

    Accreditation | National Nuclear Security Administration | (NNSA) Savannah River Analytical Laboratories Achieve International Standard Accreditation Tuesday, September 8, 2015 - 12:55pm Savannah River National Laboratory's F/H Analytical Laboratories have achieved ISO/IEC 17025 accreditation, which represents an independent validation of two analytical methods against a set of world-class specifications. The accreditation was formally awarded by the American Association for Laboratory

  4. NREL Engineer Gets Lifetime Achievement Award

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

    Engineer Gets Lifetime Achievement Award For more information contact: e:mail: Public Affairs Golden, Colo., May 20, 1998 — A senior engineer at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) will receive a major international award for his career-long contributions to the design of energy efficient buildings. Douglas Balcomb has been selected to receive the 1998 Lifetime Achievement Award from the Passive and Low-Energy Architecture (PLEA) network at the group's

  5. Low Voltage White Phosphorescent OLED Achievements

    Broader source: Energy.gov [DOE]

    Universal Display Corporation (UDC) and its research partners at Princeton University and the University of Southern California have succeeded in developing a white phosphorescent OLED (PHOLED™) that achieved a record efficiency of 20 lumens per watt. This achievement is the result of the team's collaborative efforts to increase the efficiency of PHOLED lighting by focusing on two critical factors: lowering the drive voltages and increasing the amount of light extracted.

  6. Lab scientists recognized for their achievements

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

    Lab scientists recognized for their achievements Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:September 2015 all issues All Issues » submit Lab scientists recognized for their achievements Influential scientific minds, F. Albert Cotton and Ernest O. Lawrence Awards September 2, 2014 Left to right: Bette Korber, Alan Perelson and Allison Aiken Left to right: Bette Korber, Alan Perelson and Allison Aiken Contact Linda Anderman Email Aiken, Korber and Perelson

  7. Keeping Impact As Low As Reasonably Achievable

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

    ALARA Keeping Impact As Low As Reasonably Achievable As low as reasonably achievable means making every reasonable effort to maintain exposures to ionizing radiation as far below the dose limits as practical. August 1, 2013 Transuranic waste shipment leaves facility bound for Waste Isolation Pilot Plant (WIPP) Transuranic waste shipment leaves facility bound for Waste Isolation Pilot Plant (WIPP) Radioactive sources are all around us: the sun and the cosmos, medical tests, building materials,

  8. Awards & Achievements | Argonne National Laboratory

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

    Awards & Achievements 2014 2014 U.S. Department of Energy, Vehicle Technologies Office, Distinguished Achievement Award, Larry Johnson 2014 U.S. Department of Energy, Vehicle Technologies Office, Research and Development Award 2014 R&D 100 Award, "Sequential Infiltration Synthesis Lithography," Seth Darling, Jeffrey Elam, Qing Peng, Yu-Chih Tseng, David Czaplewski, Anil Mane and Leonidas Ocola 2014 R&D 100 Award, "Advanced Redox Shuttle Additive for Overcharge

  9. Collaboration drives achievement in protein structure research

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

    Collaboration drives achievement in protein structure research Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:September 2015 all issues All Issues » submit Collaboration drives achievement in protein structure research By tracking down how bacterial defense systems work, the scientists can potentially fight infectious diseases and genetic disorders November 1, 2014 Thomas Terwilliger Thomas Terwilliger Contact Linda Anderman Email When a recent print issue of

  10. Stellar chemical abundances: in pursuit of the highest achievable precision

    SciTech Connect (OSTI)

    Bedell, Megan; Bean, Jacob L.; Meléndez, Jorge; Leite, Paulo; Asplund, Martin

    2014-11-01

    The achievable level of precision on photospheric abundances of stars is a major limiting factor on investigations of exoplanet host star characteristics, the chemical histories of star clusters, and the evolution of the Milky Way and other galaxies. While model-induced errors can be minimized through the differential analysis of spectrally similar stars, the maximum achievable precision of this technique has been debated. As a test, we derive differential abundances of 19 elements from high-quality asteroid-reflected solar spectra taken using a variety of instruments and conditions. We treat the solar spectra as being from unknown stars and use the resulting differential abundances, which are expected to be zero, as a diagnostic of the error in our measurements. Our results indicate that the relative resolution of the target and reference spectra is a major consideration, with use of different instruments to obtain the two spectra leading to errors up to 0.04 dex. Use of the same instrument at different epochs for the two spectra has a much smaller effect (∼0.007 dex). The asteroid used to obtain the solar standard also has a negligible effect (∼0.006 dex). Assuming that systematic errors from the stellar model atmospheres have been minimized, as in the case of solar twins, we confirm that differential chemical abundances can be obtained at sub-0.01 dex precision with due care in the observations, data reduction, and abundance analysis.

  11. Property:Maximum Wave Height(m) at Wave Period(s) | Open Energy...

    Open Energy Info (EERE)

    at Wave Period(s) Jump to: navigation, search Property Name Maximum Wave Height(m) at Wave Period(s) Property Type String Pages using the property "Maximum Wave Height(m) at Wave...

  12. 2011-07 "Maximum Utilization of WIPP by Increasing MDA G TRU...

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

    7 "Maximum Utilization of WIPP by Increasing MDA G TRU Shipments" 2011-07 "Maximum Utilization of WIPP by Increasing MDA G TRU Shipments" The intent of this recommendation is to ...

  13. Idaho Site Contractor Achieves Treatment Project Milestone

    Broader source: Energy.gov [DOE]

    IDAHO FALLS, Idaho – The Idaho site’s main cleanup contractor recently achieved a major performance milestone by successfully passing an operational readiness review for a first-of-a-kind facility that will treat the remaining 900,000 gallons of liquid radioactive waste generated by the site’s legacy cleanup mission.

  14. Possible ways to achieve cold fusion. III

    SciTech Connect (OSTI)

    Tisenko, Yu.A.

    1994-12-01

    It is suggested that a deuteron {open_quotes}microaccelerator{close_quotes} be constructed in order to achieve cold fusion. This accelerator would operate on the basis of a glow discharge near a charged Pd-D powder grain in low-density gaseous D{sub 2}. Possible parameters of such an accelerator are calculated. The heat released as a result of fusion is estimated, as is the intensity of the deuteron flux.

  15. PNNL: About PNNL - Achievements and Awards

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

    Awards and Achievements Awards and Honors PNNL's researchers strive for excellence. Their research and technology transfer efforts continually earn prestigious national and international awards and honors including: R&D 100 Awards R&D 100 Award Logo R&D Magazine honors inventors by identifying the 100 most technologically significant products and advancements for each year and recognizing the winning innovators and their organizations. PNNL has received 5 R&D 100 Awards in FY15,

  16. Collaboration drives achievement in protein structure research

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

    Protein structure research Collaboration drives achievement in protein structure research By tracking down how bacterial defense systems work, the scientists can potentially fight infectious diseases and genetic disorders. September 15, 2014 Thomas Terwilliger Thomas Terwilliger Contact Nancy Ambrosiano Communications Office (505) 667-0471 Email "It is tremendously exciting working with researchers around the world, helping them apply the software and algorithms that we have developed to

  17. Awards and Achievements | Argonne National Laboratory

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

    Awards and Achievements 2014 UChicago Pinnacle of Education Award Mike Kaminski 2014 UChicago Pinnacle of Education Award Seth Darling 2014 R&D 100 Award John Zhang 2014 R&D 100 Award Ani Sumant 2014 Bernard Lewis Gold Medal Lawrence Harding 2014 HENAAC Luminary Honoree Emilio Bunel 2014 Fermilab/URA Outstanding Thesis Award Joseph Grange 2014 UChicago Argonne LLC Distinguished Performance Award Igor Aronson 2014 UChicago Argonne LLC Distinguished Performance Award Oleksiy Snezhko 2014

  18. Secretary's 2014 Achievement Awards | Department of Energy

    Office of Environmental Management (EM)

    Seismic Life-Safety, Modernization, and Replacement of General Purpose Buildings, Phase 2 Project (Office of Science) (975.52 KB) More Documents & Publications 2014 Awards for Project Management Acquisition and Project Management Awards Presentations - Ingrid Kolb, Director, Office of Management Secretary's 2013 Achievement Awards

    Security Improvements Project (The National Nuclear Security Administration) (819.59 KB) More Documents & Publications Secretary's 2014 Award for Project

  19. Secretary's Achievement Award (SING) | Department of Energy

    Office of Environmental Management (EM)

    SING) Secretary's Achievement Award (SING) (from left to right) Daniel Poneman; David Arakawa; Barbara Thibadeau; Phillip Kraushaar; Daniel Lehman; Ingrid Kolb (from left to right) Daniel Poneman; David Arakawa; Barbara Thibadeau; Phillip Kraushaar; Daniel Lehman; Ingrid Kolb Presented to: The Office of Science's Spallation Neutron Source Instruments - Next Generation (SING) Project The SING team capitalized on the technical and managerial efficiency gained by combining the five instruments into

  20. Maximum likelihood Bayesian model averaging and its predictive analysis for groundwater reactive transport models

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Lu, Dan; Ye, Ming; Curtis, Gary P.

    2015-08-01

    While Bayesian model averaging (BMA) has been widely used in groundwater modeling, it is infrequently applied to groundwater reactive transport modeling because of multiple sources of uncertainty in the coupled hydrogeochemical processes and because of the long execution time of each model run. To resolve these problems, this study analyzed different levels of uncertainty in a hierarchical way, and used the maximum likelihood version of BMA, i.e., MLBMA, to improve the computational efficiency. Our study demonstrates the applicability of MLBMA to groundwater reactive transport modeling in a synthetic case in which twenty-seven reactive transport models were designed to predict themore » reactive transport of hexavalent uranium (U(VI)) based on observations at a former uranium mill site near Naturita, CO. Moreover, these reactive transport models contain three uncertain model components, i.e., parameterization of hydraulic conductivity, configuration of model boundary, and surface complexation reactions that simulate U(VI) adsorption. These uncertain model components were aggregated into the alternative models by integrating a hierarchical structure into MLBMA. The modeling results of the individual models and MLBMA were analyzed to investigate their predictive performance. The predictive logscore results show that MLBMA generally outperforms the best model, suggesting that using MLBMA is a sound strategy to achieve more robust model predictions relative to a single model. MLBMA works best when the alternative models are structurally distinct and have diverse model predictions. When correlation in model structure exists, two strategies were used to improve predictive performance by retaining structurally distinct models or assigning smaller prior model probabilities to correlated models. Since the synthetic models were designed using data from the Naturita site, the results of this study are expected to provide guidance for real-world modeling. Finally

  1. Maximum likelihood Bayesian model averaging and its predictive analysis for groundwater reactive transport models

    SciTech Connect (OSTI)

    Lu, Dan; Ye, Ming; Curtis, Gary P.

    2015-08-01

    While Bayesian model averaging (BMA) has been widely used in groundwater modeling, it is infrequently applied to groundwater reactive transport modeling because of multiple sources of uncertainty in the coupled hydrogeochemical processes and because of the long execution time of each model run. To resolve these problems, this study analyzed different levels of uncertainty in a hierarchical way, and used the maximum likelihood version of BMA, i.e., MLBMA, to improve the computational efficiency. Our study demonstrates the applicability of MLBMA to groundwater reactive transport modeling in a synthetic case in which twenty-seven reactive transport models were designed to predict the reactive transport of hexavalent uranium (U(VI)) based on observations at a former uranium mill site near Naturita, CO. Moreover, these reactive transport models contain three uncertain model components, i.e., parameterization of hydraulic conductivity, configuration of model boundary, and surface complexation reactions that simulate U(VI) adsorption. These uncertain model components were aggregated into the alternative models by integrating a hierarchical structure into MLBMA. The modeling results of the individual models and MLBMA were analyzed to investigate their predictive performance. The predictive logscore results show that MLBMA generally outperforms the best model, suggesting that using MLBMA is a sound strategy to achieve more robust model predictions relative to a single model. MLBMA works best when the alternative models are structurally distinct and have diverse model predictions. When correlation in model structure exists, two strategies were used to improve predictive performance by retaining structurally distinct models or assigning smaller prior model probabilities to correlated models. Since the synthetic models were designed using data from the Naturita site, the results of this study are expected to provide guidance for real-world modeling. Finally, limitations of

  2. Maximum allowable hydraulic ram force for heel jet removal Tank 241-C-106

    SciTech Connect (OSTI)

    PAULSEN, S.S.

    2003-01-10

    This document contains an evaluation of the maximum force that can be used to actuate the hydraulic ram assembly without causing permanent damage to the riser or pit.

  3. Alaska Maximum Number of Active Crews Engaged in Three-Dimensional...

    Gasoline and Diesel Fuel Update (EIA)

    Three-Dimensional Seismic Surveying (Number of Elements) Alaska Maximum Number of Active Crews Engaged in Three-Dimensional Seismic Surveying (Number of Elements) Year Jan Feb Mar...

  4. Achieving adequate BMP`s for stormwater quality management

    SciTech Connect (OSTI)

    Jones-Lee, A.; Lee, G.F.

    1994-12-31

    There is considerable controversy about the technical appropriateness and the cost-effectiveness of requiring cities to control contaminants in urban stormwater discharges to meet state water quality standards equivalent to US EPA numeric chemical water quality criteria. At this time and likely for the next 10 years, urban stormwater discharges will be exempt from regulation to achieve state water quality standards in receiving waters, owing to the high cost to cities of the management of contaminants in the stormwater runoff-discharge so as to prevent exceedances of water quality standards in the receiving waters. Instead of requiring the same degree of contaminant control for stormwater discharges as is required for point-source discharges of municipal and industrial wastewaters, those responsible for urban stormwater discharges will have to implement Best Management Practices (BMP`s) for contaminant control. The recommended approach for implementation of BMP`s involves the use of site-specific evaluations of what, if any, real problems (use impairment) are caused by stormwater-associated contaminants in the waters receiving that stormwater discharge. From this type of information BMP`s can then be developed to control those contaminants in stormwater discharges that are, in fact, impairing the beneficial uses of receiving waters.

  5. Design to Achieve Fault Tolerance and Resilience

    SciTech Connect (OSTI)

    Ted Quinn; Richard Bockhorst; Craig Peterson; Gregg Swindlehurst

    2012-09-01

    The purpose of this report is to provide initial scoping for follow on work designed to improve nuclear plant operation. The focus of this report is twofold. Selected trips over the last five years are examined to determine if there are potential opportunities to automate tasks that are currently performed manually. The second area is to evaluate the potential for avoiding reactor trips by reducing power in a controlled manner upon the loss of turbine generator load. Some candidate opportunities to reduce the frequency on reactor trips identified in this report are redundant feedwater controls, automated response to a feedwater or condensate pump trip reducing power vice a reactor trip, and elimination of air operators for the feedwater control valves or providing redundant air supplies.

  6. Potential Impact of Adopting Maximum Technologies as Minimum Efficiency Performance Standards in the U.S. Residential Sector

    SciTech Connect (OSTI)

    Letschert, Virginie; Desroches, Louis-Benoit; McNeil, Michael; Saheb, Yamina

    2010-05-03

    The US Department of Energy (US DOE) has placed lighting and appliance standards at a very high priority of the U.S. energy policy. However, the maximum energy savings and CO2 emissions reduction achievable via minimum efficiency performance standards (MEPS) has not yet been fully characterized. The Bottom Up Energy Analysis System (BUENAS), first developed in 2007, is a global, generic, and modular tool designed to provide policy makers with estimates of potential impacts resulting from MEPS for a variety of products, at the international and/or regional level. Using the BUENAS framework, we estimated potential national energy savings and CO2 emissions mitigation in the US residential sector that would result from the most aggressive policy foreseeable: standards effective in 2014 set at the current maximum technology (Max Tech) available on the market. This represents the most likely characterization of what can be maximally achieved through MEPS in the US. The authors rely on the latest Technical Support Documents and Analytical Tools published by the U.S. Department of Energy as a source to determine appliance stock turnover and projected efficiency scenarios of what would occur in the absence of policy. In our analysis, national impacts are determined for the following end uses: lighting, television, refrigerator-freezers, central air conditioning, room air conditioning, residential furnaces, and water heating. The analyzed end uses cover approximately 65percent of site energy consumption in the residential sector (50percent of the electricity consumption and 80percent of the natural gas and LPG consumption). This paper uses this BUENAS methodology to calculate that energy savings from Max Tech for the U.S. residential sector products covered in this paper will reach an 18percent reduction in electricity demand compared to the base case and 11percent in Natural Gas and LPG consumption by 2030 The methodology results in reductions in CO2 emissions of a similar

  7. Application of asymptotic expansions for maximum likelihood estimators errors to gravitational waves from binary mergers: The single interferometer case

    SciTech Connect (OSTI)

    Zanolin, M.; Vitale, S.; Makris, N.

    2010-06-15

    In this paper we apply to gravitational waves (GW) from the inspiral phase of binary systems a recently derived frequentist methodology to calculate analytically the error for a maximum likelihood estimate of physical parameters. We use expansions of the covariance and the bias of a maximum likelihood estimate in terms of inverse powers of the signal-to-noise ration (SNR)s where the square root of the first order in the covariance expansion is the Cramer Rao lower bound (CRLB). We evaluate the expansions, for the first time, for GW signals in noises of GW interferometers. The examples are limited to a single, optimally oriented, interferometer. We also compare the error estimates using the first two orders of the expansions with existing numerical Monte Carlo simulations. The first two orders of the covariance allow us to get error predictions closer to what is observed in numerical simulations than the CRLB. The methodology also predicts a necessary SNR to approximate the error with the CRLB and provides new insight on the relationship between waveform properties, SNR, dimension of the parameter space and estimation errors. For example the timing match filtering can achieve the CRLB only if the SNR is larger than the Kurtosis of the gravitational wave spectrum and the necessary SNR is much larger if other physical parameters are also unknown.

  8. Isuzu's new 12. 0L micro-computer controlled turbocharged diesel engine

    SciTech Connect (OSTI)

    Wakabayashi, M.; Sakata, S.; Hamanaka, K.

    1984-01-01

    Isuzu Motors Limited introduced in the Japanese market a new micro-computer controlled turbocharged 6RA1TC diesel engine which powers new Isuzu heavy-duty trucks in 1983. This engine has successfully achieved both fuel economy and vehicle performance. This was realized by the combination of the newly developed micro-computer controlled fuel injection system and turbocharged air-to-air intercooled four valve low friction diesel engine. The purpose of the computer control system is flexible and precise control of fuel flow rate and fuel injection timing. This provides maximum engine performance and driveability, best fuel economy combined with the gearing of the vehicle, and easy operation for drivers. Additionally, this engine offers the following features: Good cold startability; Constant speed Cruise Control; Automatic schedule idling speed during warm-up; Stable low speed idling; Light and quick throttle response; Monitoring display for best fuel economy operation; Monitor display for engine diagnosis.

  9. Savannah River Site Achieves Waste Transfer First

    Broader source: Energy.gov [DOE]

    AIKEN, S.C. – The EM program and its liquid waste contractor at the Savannah River Site (SRS) made history recently by safely transferring radioactive liquid waste from F Tank Farm to H Tank Farm using a central control room.

  10. A Year of Exceptional Achievements FY 2008

    SciTech Connect (OSTI)

    devore, L; Chrzanowski, P

    2008-11-06

    2008 highlights: (1) Stockpile Stewardship and Complex Transformation - LLNL achieved scientific breakthroughs that explain some of the key 'unknowns' in nuclear weapons performance and are critical to developing the predictive science needed to ensure the safety, reliability, and security of the U.S. nuclear deterrent without nuclear testing. In addition, the National Ignition Facility (NIF) passed 99 percent completion, an LLNL supercomputer simulation won the 2007 Gordon Bell Prize, and a significant fraction of our inventory of special nuclear material was shipped to other sites in support of complex transformation. (2) National and Global Security - Laboratory researchers delivered insights, technologies, and operational capabilities that are helping to ensure national security and global stability. Of particular note, they developed advanced detection instruments that provide increased speed, accuracy, specificity, and resolution for identifying and characterizing biological, chemical, nuclear, and high-explosive threats. (3) Exceptional Science and Technology - The Laboratory continued its tradition of scientific excellence and technical innovation. LLNL scientists made significant contributions to Nobel Prize-winning work on climate change. LLNL also received three R&D 100 awards and six Nanotech 50 awards, and dozens of Laboratory scientists and engineers were recognized with professional awards. These honors provide valuable confirmation that peers and outside experts recognize the quality of our staff and our work. (4) Enhanced Business and Operations - A major thrust under LLNS is to make the Laboratory more efficient and cost competitive. We achieved roughly $75 million in cost savings for support activities through organizational changes, consolidation of services, improved governance structures and work processes, technology upgrades, and systems shared with Los Alamos National Laboratory. We realized nonlabor cost savings of $23 million. Severe

  11. Technology Advances Needed for Photovoltaics to Achieve Widespread...

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

    Technology Advances Needed for Photovoltaics to Achieve Widespread Grid Price Parity Technology Advances Needed for Photovoltaics to Achieve Widespread Grid Price Parity Abstract: ...

  12. Marine Corps Base Quantico Achieves 85% Savings in Parking Lighting...

    Office of Environmental Management (EM)

    Quantico Achieves 85% Savings in Parking Lighting Marine Corps Base Quantico Achieves 85% Savings in Parking Lighting Marine Corps Base Quantico (MCBQ) in Virginia Marine Corps ...

  13. Cook Composites and Polymers Company Achieves Superior Energy...

    Energy Savers [EERE]

    Cook Composites and Polymers Company Achieves Superior Energy Performance Gold Certification Cook Composites and Polymers Company Achieves Superior Energy Performance Gold ...

  14. Washington, D.C. and Indiana: Allison Hybrid Technology Achieves...

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

    Washington, D.C. and Indiana: Allison Hybrid Technology Achieves Commercial Success Washington, D.C. and Indiana: Allison Hybrid Technology Achieves Commercial Success August 21,...

  15. Air Force Achieves Fuel Efficiency through Industry Best Practices...

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

    Force Achieves Fuel Efficiency through Industry Best Practices Air Force Achieves Fuel Efficiency through Industry Best Practices Fact sheet offers an overview of the U.S. Air ...

  16. Metering Best Practices: A Guide to Achieving Utility Resource...

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

    Metering Best Practices: A Guide to Achieving Utility Resource Efficiency Metering Best Practices: A Guide to Achieving Utility Resource Efficiency Guide describes information ...

  17. Uranium project achieves safety milestone | Y-12 National Security...

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

    project achieves ... Uranium project achieves safety milestone Posted: December 4, 2014 - ... USACE awarded a fixed-price contract to Avisco, Inc., a woman-owned business that is ...

  18. Metering Best Practices: A Guide to Achieving Utility Resource...

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

    Metering Best Practices: A Guide to Achieving Utility Resource Efficiency Metering Best Practices: A Guide to Achieving Utility Resource Efficiency Guide describes information...

  19. Proceedings from the Wind Manufacturing Workshop: Achieving 20...

    Office of Environmental Management (EM)

    Proceedings from the Wind Manufacturing Workshop: Achieving 20% Wind Energy in the U.S. by 2030, May 2009 Proceedings from the Wind Manufacturing Workshop: Achieving 20% Wind...

  20. Opening Remarks - Bob Cochran - Achieving Excellence in Management...

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

    Opening Remarks - Bob Cochran - Achieving Excellence in Management and Operations Opening Remarks - Bob Cochran - Achieving Excellence in Management and Operations Presentation ...

  1. Jefferson Lab News - Jefferson Lab Achieves Critical Milestone...

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

    Achieves Critical Milestone Toward Construction of 310-Million Upgrade Project Jefferson Lab Achieves Critical Milestone Toward Construction of 310-Million Upgrade Project Pion ...

  2. Construction Workers Achieve Safety Milestone at Savannah River...

    Office of Environmental Management (EM)

    Construction Workers Achieve Safety Milestone at Savannah River Site Construction Workers Achieve Safety Milestone at Savannah River Site April 29, 2014 - 4:23pm Addthis Savannah ...

  3. DOE Researchers Achieve Important Genetic Breakthroughs to Help...

    Energy Savers [EERE]

    Researchers Achieve Important Genetic Breakthroughs to Help Develop Cheaper Biofuels DOE Researchers Achieve Important Genetic Breakthroughs to Help Develop Cheaper Biofuels ...

  4. Achieving Total Employee Engagement in Energy Efficiency | Department...

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

    Ratheon and GM share their experiences with employee engagement to achieve energy efficiency and sustainability goals in this presentation. Achieving Total Employee Engagement in ...

  5. Achievements of structural genomics (Journal Article) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Achievements of structural genomics Citation Details In-Document Search Title: Achievements of structural genomics You are accessing a document from the...

  6. Advanced Mixed Waste Treatment Project Achieves Impressive Safety...

    Office of Environmental Management (EM)

    Advanced Mixed Waste Treatment Project Achieves Impressive Safety and Production Marks Advanced Mixed Waste Treatment Project Achieves Impressive Safety and Production Marks June ...

  7. Boise Inc. St. Helens Paper Mill Achieves Significant Fuel Savings...

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

    Boise Inc. St. Helens Paper Mill Achieves Significant Fuel Savings Boise Inc. St. Helens Paper Mill Achieves Significant Fuel Savings This case study describes how the Boise Inc. ...

  8. Achievements of structural genomics (Technical Report) | SciTech...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Achievements of structural genomics Citation Details In-Document Search Title: Achievements of structural genomics Authors: Terwilliger, Thomas C. 1 + Show ...

  9. Largest Producer of Steel Products in the United States Achieves...

    Office of Environmental Management (EM)

    Largest Producer of Steel Products in the United States Achieves Significant Energy Savings at its Minntac Plant Largest Producer of Steel Products in the United States Achieves ...

  10. Evolved strains of Scheffersomyces stipitis achieving high ethanol...

    Office of Scientific and Technical Information (OSTI)

    Evolved strains of Scheffersomyces stipitis achieving high ethanol productivity on acid- ... Title: Evolved strains of Scheffersomyces stipitis achieving high ethanol productivity on ...

  11. EM's Defense Waste Processing Facility Achieves Waste Cleanup...

    Office of Environmental Management (EM)

    Defense Waste Processing Facility Achieves Waste Cleanup Milestone EM's Defense Waste Processing Facility Achieves Waste Cleanup Milestone January 14, 2016 - 12:10pm Addthis The ...

  12. Los Angeles County's Green Idea House Achieves Efficient Goals...

    Energy Savers [EERE]

    County's Green Idea House Achieves Efficient Goals Los Angeles County's Green Idea House Achieves Efficient Goals Photo of an energy-efficient home with modern architecture. The ...

  13. PRESSURE SYSTEM CONTROL

    DOE Patents [OSTI]

    Esselman, W.H.; Kaplan, G.M.

    1961-06-20

    The control of pressure in pressurized liquid systems, especially a pressurized liquid reactor system, may be achieved by providing a bias circuit or loop across a closed loop having a flow restriction means in the form of an orifice, a storage tank, and a pump connected in series. The subject invention is advantageously utilized where control of a reactor can be achieved by response to the temperature and pressure of the primary cooling system.

  14. NEUTRONIC REACTOR CONTROL ELEMENT

    DOE Patents [OSTI]

    Beaver, R.J.; Leitten, C.F. Jr.

    1962-04-17

    A boron-10 containing reactor control element wherein the boron-10 is dispersed in a matrix material is describeri. The concentration of boron-10 in the matrix varies transversely across the element from a minimum at the surface to a maximum at the center of the element, prior to exposure to neutrons. (AEC)

  15. First-ever ieRoadmap Workshop Reviews Progress in Achieving Roadmap Goals |

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

    Department of Energy First-ever ieRoadmap Workshop Reviews Progress in Achieving Roadmap Goals First-ever ieRoadmap Workshop Reviews Progress in Achieving Roadmap Goals On May 28-29, 2008, the first ieRoadmap Workshop was held to assist the energy sector in assessing alignment of current industry projects with the goals outlined in the Roadmap to Secure Control Systems in the Energy Sector. First-ever ieRoadmap Workshop Reviews Progress in Achieving Roadmap Goals (12.17 KB) More Documents

  16. U.S. Lower 48 States Offshore Maximum Number of Active Crews...

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Offshore Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 2000's 167...

  17. U.S. Lower 48 States Onshore Maximum Number of Active Crews Engaged...

    Gasoline and Diesel Fuel Update (EIA)

    Onshore Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 2000's 435 512...

  18. U.S. Maximum Number of Active Crews Engaged in Seismic Surveying...

    Gasoline and Diesel Fuel Update (EIA)

    Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 2000's 615 717 624 481...

  19. Title 43 CFR 3206.12 What are the Minimum and Maximum Lease Sizes...

    Open Energy Info (EERE)

    .12 What are the Minimum and Maximum Lease Sizes? Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- Federal RegulationFederal Regulation: Title 43...

  20. Alaska Maximum Number of Active Crews Engaged in Two-Dimensional...

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Two-Dimensional Seismic Surveying (Number of Elements) Alaska Maximum Number of Active Crews Engaged in Two-Dimensional Seismic Surveying (Number of Elements) Year Jan Feb Mar Apr...

  1. A Requirement for Significant Reduction in the Maximum BTU Input Rate of

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

    Decorative Vented Gas Fireplaces Would Impose Substantial Burdens on Manufacturers | Department of Energy A Requirement for Significant Reduction in the Maximum BTU Input Rate of Decorative Vented Gas Fireplaces Would Impose Substantial Burdens on Manufacturers A Requirement for Significant Reduction in the Maximum BTU Input Rate of Decorative Vented Gas Fireplaces Would Impose Substantial Burdens on Manufacturers Comment that a requirement to reduce the BTU input rate of existing decorative

  2. Heterogeneity-corrected vs -uncorrected critical structure maximum point doses in breast balloon brachytherapy

    SciTech Connect (OSTI)

    Kim, Leonard; Narra, Venkat; Yue, Ning

    2013-07-01

    Recent studies have reported potentially clinically meaningful dose differences when heterogeneity correction is used in breast balloon brachytherapy. In this study, we report on the relationship between heterogeneity-corrected and -uncorrected doses for 2 commonly used plan evaluation metrics: maximum point dose to skin surface and maximum point dose to ribs. Maximum point doses to skin surface and ribs were calculated using TG-43 and Varian Acuros for 20 patients treated with breast balloon brachytherapy. The results were plotted against each other and fit with a zero-intercept line. Max skin dose (Acuros) = max skin dose (TG-43) ? 0.930 (R{sup 2} = 0.995). The average magnitude of difference from this relationship was 1.1% (max 2.8%). Max rib dose (Acuros) = max rib dose (TG-43) ? 0.955 (R{sup 2} = 0.9995). The average magnitude of difference from this relationship was 0.7% (max 1.6%). Heterogeneity-corrected maximum point doses to the skin surface and ribs were proportional to TG-43-calculated doses. The average deviation from proportionality was 1%. The proportional relationship suggests that a different metric other than maximum point dose may be needed to obtain a clinical advantage from heterogeneity correction. Alternatively, if maximum point dose continues to be used in recommended limits while incorporating heterogeneity correction, institutions without this capability may be able to accurately estimate these doses by use of a scaling factor.

  3. Real Power and Reactive Power Control of a Three-Phase Single-Stage-PV System and PV voltage Stability

    SciTech Connect (OSTI)

    Li, Huijuan; Xu, Yan; Adhikari, Sarina; Rizy, D Tom; Li, Fangxing; Irminger, Philip

    2012-01-01

    Grid-connected photovoltaic (PV) systems with power electronic interfaces can provide both real and reactive power to meet power system needs with appropriate control algorithms. This paper presents the control algorithm design for a three-phase single-stage grid-connected PV inverter to achieve either maximum power point tracking (MPPT) or a certain amount of real power injection, as well as the voltage/var control. The switching between MPPT control mode and a certain amount of real power control mode is automatic and seamless. Without the DC-to-DC booster stage, PV DC voltage stability is an important issue in the control design especially when the PV inverter is operating at maximum power point (MPP) with voltage/var control. The PV DC voltage collapse phenomenon and its reason are discussed. The method based on dynamic correction of the PV inverter output is proposed to ensure PV DC voltage stability. Simulation results of the single-stage PV system during system disturbances and fast solar irradiation changes confirm that the proposed control algorithm for single-stage PV inverters can provide appropriate real and reactive power services and ensure PV DC voltage stability during dynamic system operation and atmospheric conditions.

  4. Achieving Energy Efficiency Through Real-Time Feedback

    SciTech Connect (OSTI)

    Nesse, Ronald J.

    2011-09-01

    Through the careful implementation of simple behavior change measures, opportunities exist to achieve strategic gains, including greater operational efficiencies, energy cost savings, greater tenant health and ensuing productivity and an improved brand value through sustainability messaging and achievement.

  5. First Power for SWiFT Turbine Achieved during Recommissioning

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

    Power for SWiFT Turbine Achieved during Recommissioning - Sandia Energy Energy Search Icon ... Twitter Google + Vimeo Newsletter Signup SlideShare First Power for SWiFT Turbine Achieved ...

  6. A High-Performance Recycling Solution for PolystyreneAchieved...

    Office of Scientific and Technical Information (OSTI)

    PolystyreneAchieved by the Synthesis of Renewable Poly(thioether) Networks Derived from D ... PolystyreneAchieved by the Synthesis of Renewable Poly(thioether) Networks Derived from D ...

  7. Los Alamos achieves 20-year low on radioactive air emissions

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

    LANL achieves 20-year low on radioactive air emissions Los Alamos achieves 20-year low on radioactive air emissions The Lab measures air emissions through a comprehensive system of ...

  8. U.S. Department of Energy - Secretary's Achievement Award | National...

    National Nuclear Security Administration (NNSA)

    Apply for Our Jobs Our Jobs Working at NNSA Blog Home NNSA Blog U.S. Department of Energy - Secretary's Achievement Award U.S. Department of Energy - Secretary's Achievement...

  9. Verification of maximum impact force for interim storage cask for the Fast Flux Testing Facility

    SciTech Connect (OSTI)

    Chen, W.W.; Chang, S.J.

    1996-06-01

    The objective of this paper is to perform an impact analysis of the Interim Storage Cask (ISC) of the Fast Flux Test Facility (FFTF) for a 4-ft end drop. The ISC is a concrete cask used to store spent nuclear fuels. The analysis is to justify the impact force calculated by General Atomics (General Atomics, 1994) using the ILMOD computer code. ILMOD determines the maximum force developed by the concrete crushing which occurs when the drop energy has been absorbed. The maximum force, multiplied by the dynamic load factor (DLF), was used to determine the maximum g-level on the cask during a 4-ft end drop accident onto the heavily reinforced FFTF Reactor Service Building`s concrete surface. For the analysis, this surface was assumed to be unyielding and the cask absorbed all the drop energy. This conservative assumption simplified the modeling used to qualify the cask`s structural integrity for this accident condition.

  10. The Use of Ecological Restoration Principles To Achieve Remedy Protection

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

    at the Fernald Preserve and Weldon Spring Sites | Department of Energy The Use of Ecological Restoration Principles To Achieve Remedy Protection at the Fernald Preserve and Weldon Spring Sites The Use of Ecological Restoration Principles To Achieve Remedy Protection at the Fernald Preserve and Weldon Spring Sites The Use of Ecological Restoration Principles To Achieve Remedy Protection at the Fernald Preserve and Weldon Spring Sites The Use of Ecological Restoration Principles To Achieve

  11. Southern Ute Indian Tribe Solar Project Achieves Milestone | Department of

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

    Energy Southern Ute Indian Tribe Solar Project Achieves Milestone Southern Ute Indian Tribe Solar Project Achieves Milestone January 11, 2016 - 10:30am Addthis Southern Ute Indian Tribe Solar Project Achieves Milestone The Southern Ute Indian Tribe has achieved a major milestone toward developing a roughly 1-megawatt solar photovoltaic (PV) system that will generate energy equivalent to a 15% offset of the total energy usage at about 10 tribally owned buildings on the Southern Ute Indian

  12. Assessment of Achievable Potential from Energy Efficiency and...

    Open Energy Info (EERE)

    URI: cleanenergysolutions.orgcontentassessment-achievable-potential-energ Language: English Policies: Regulations Regulations: MandatesTargets This report discusses...

  13. Building America Case Study: Challenges of Achieving 2012 IECC...

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

    information, see the Building America report, Challenges of Achieving 2012 IECC Air Sealing Requirements in Multifamily Buildings,

  14. Achieving 30% Renewable Electricity Use by 2025 | Department of Energy

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

    Renewable Energy Projects » Achieving 30% Renewable Electricity Use by 2025 Achieving 30% Renewable Electricity Use by 2025 Achieving 30% Renewable Electricity Use by 2025 By 2025, 30% of the electricity consumed by the federal government is to come from renewable energy sources, according to Executive Order 13693: Planning for Federal Sustainability in the Next Decade. To achieve 30% renewable electricity by the 2025 target, the executive order established a hierarchy of practices for federal

  15. Los Alamos team receives DOE Secretary's Achievement Award

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

    Los Alamos team receives DOE Secretary's Achievement Award Los Alamos team receives DOE Secretary's Achievement Award The Radiological Laboratory Utility Office Building (RLUOB) Transition Team received the U.S. Department of Energy Secretary's Achievement Award for its teamwork and performance. September 8, 2015 The DOE Secretary's Achievement Award is presented to the RLUOB Transfer Team. Top (from left): David Gallimore, Brett Cederdahl, Mike Parkes, Tim Leckbee and Tim Nelson. Bottom (from

  16. Estimating the maximum potential revenue for grid connected electricity storage : arbitrage and regulation.

    SciTech Connect (OSTI)

    Byrne, Raymond Harry; Silva Monroy, Cesar Augusto.

    2012-12-01

    The valuation of an electricity storage device is based on the expected future cash ow generated by the device. Two potential sources of income for an electricity storage system are energy arbitrage and participation in the frequency regulation market. Energy arbitrage refers to purchasing (stor- ing) energy when electricity prices are low, and selling (discharging) energy when electricity prices are high. Frequency regulation is an ancillary service geared towards maintaining system frequency, and is typically procured by the independent system operator in some type of market. This paper outlines the calculations required to estimate the maximum potential revenue from participating in these two activities. First, a mathematical model is presented for the state of charge as a function of the storage device parameters and the quantities of electricity purchased/sold as well as the quantities o ered into the regulation market. Using this mathematical model, we present a linear programming optimization approach to calculating the maximum potential revenue from an elec- tricity storage device. The calculation of the maximum potential revenue is critical in developing an upper bound on the value of storage, as a benchmark for evaluating potential trading strate- gies, and a tool for capital nance risk assessment. Then, we use historical California Independent System Operator (CAISO) data from 2010-2011 to evaluate the maximum potential revenue from the Tehachapi wind energy storage project, an American Recovery and Reinvestment Act of 2009 (ARRA) energy storage demonstration project. We investigate the maximum potential revenue from two di erent scenarios: arbitrage only and arbitrage combined with the regulation market. Our analysis shows that participation in the regulation market produces four times the revenue compared to arbitrage in the CAISO market using 2010 and 2011 data. Then we evaluate several trading strategies to illustrate how they compare to the maximum

  17. Enrico Fermi Achieves First Self Sustain Nuclear Chain Reaction | National

    National Nuclear Security Administration (NNSA)

    Nuclear Security Administration | (NNSA) Enrico Fermi Achieves First Self Sustain Nuclear Chain Reaction Enrico Fermi Achieves First Self Sustain Nuclear Chain Reaction Chicago, IL Metallurgical Laboratory scientists led by Enrico Fermi achieve the first self-sustained nuclear chain reaction in pile constructed under the west grandstand at Stagg field in Chicago

  18. "Table A52. Nonswitchable Minimum Requirements and Maximum Consumption"

    U.S. Energy Information Administration (EIA) Indexed Site

    2. Nonswitchable Minimum Requirements and Maximum Consumption" " Potential by Census Region, 1991" " (Estimates in Physical Units)" ,,,,"RSE" ,"Actual","Minimum","Maximum","Row" "Type of Energy","Consumption","Consumption(a)","Consumption(b)","Factors" "RSE Column Factors:",1,1.2,0.8 ," Total United States" ,"-","-","-"

  19. Best available control technology (BACT) equivalent for the control of volatile organic emissions from paint dipping operations

    SciTech Connect (OSTI)

    Blankenship, W.R.; Pugh, C.W. Jr.

    1999-07-01

    This paper provides details of a study conducted to demonstrate an equivalent method of Best Available Control Technology (BACT) compliance for volatile organic emissions from dip coating of certain miscellaneous metal parts. The study was proposed to show that the total volatile organic compound (VOC) emissions from 3.8 lb of VOC/gallon coating formulations were no greater than the total VOC emissions from 3.5 lb/gallon formulations used under the same conditions for coating steel joists. The presumptive BACT standard enforced by the Virginia Department of Environmental Quality (DEQ) for dip coating of steel joists is 3.5 lb/gallon. The requirement of 3.5 lb/gallon was derived from the US Environmental Protection Agency Guideline Series Control of Volatile Organic Emissions from Existing Stationary Sources--Volume 6: Surface Coating of Miscellaneous Metal Parts and Products. On June 5, 1998 the source completed a 12 month, full scale comparison study under a consent order with the Virginia DEQ. During the study period, the source made daily measurements of product produced, paint used, and emissions from the control and test paint tanks, and reported data to EPA and the DEQ every two months. The study concluded that a 26 percent reduction in paint usage and a 20 percent reduction in emissions was achieved in the test tanks using a 3.8 lb/gal coating compared to the control tanks using a 3.5 lb/gal coating. This study enables the source to achieve greater emission reductions than the presumptive BACT level and at the same time reduce painting costs by 34%. This study provides positive results for the environment, the steel joist industry, and the construction industry. This study could impact EPA's current Maximum Achievable Control Technology (MACT) rule development for Miscellaneous Metal Parts and Products and national VOC rules for this source category under Section 183(e) of the Clean Air Act.

  20. SALTSTONE DISPOSAL FACILITY: DETERMINATION OF THE PROBABLE MAXIMUM WATER TABLE ELEVATION

    SciTech Connect (OSTI)

    Hiergesell, R

    2005-04-01

    A coverage depicting the configuration of the probable maximum water table elevation in the vicinity of the Saltstone Disposal Facility (SDF) was developed to support the Saltstone program. This coverage is needed to support the construction of saltstone vaults to assure that they remain above the maximum elevation of the water table during the Performance Assessment (PA) period of compliance. A previous investigation to calculate the historical high water table beneath the SDF (Cook, 1983) was built upon to incorporate new data that has since become available to refine that estimate and develop a coverage that could be extended to the perennial streams adjacent to the SDF. This investigation incorporated the method used in the Cook, 1983 report to develop an estimate of the probable maximum water table for a group of wells that either existed at one time at or near the SDF or which currently exist. Estimates of the probable maximum water table at these wells were used to construct 2D contour lines depicting this surface beneath the SDF and extend them to the nearby hydrologic boundaries at the perennial streams adjacent to the SDF. Although certain measures were implemented to assure that the contour lines depict a surface above which the water table will not rise, the exact elevation of this surface cannot be known with complete certainty. It is therefore recommended that the construction of saltstone vaults incorporate a vertical buffer of at least 5-feet between the base of the vaults and the depicted probable maximum water table elevation. This should provide assurance that the water table under the wet extreme climatic condition will never rise to intercept the base of a vault.

  1. Evaluation of Control Strategies to Effectively Meet 70-90% Mercury Reduction on an Eastern Bituminous Coal Cyclone Boiler with SCR

    SciTech Connect (OSTI)

    Tom Campbell

    2008-12-31

    This is the final site report for testing conducted at Public Service of New Hampshire's (PSNH) Merrimack Unit 2 (MK2). This project was funded through the DOE/NETL Innovations for Existing Plants program. It was a Phase III project with the goal to develop mercury control technologies that can achieve 50-70% mercury capture at costs 25-50% less than baseline estimates of $50,000-$70,000/lb of mercury removed. While results from testing at Merrimack indicate that the DOE goal was partially achieved, further improvements in the process are recommended. Merrimack burned a test blend of eastern bituminous and Venezuelan coals, for a target coal sulfur content of 1.2%, in its 335-MW Unit 2. The blend ratio is approximately a 50/50 split between the two coals. Various sorbent injection tests were conducted on the flue gas stream either in front of the air preheater (APH) or in between the two in-series ESPs. Initial mercury control evaluations indicated that, without SO3 control, the sorbent concentration required to achieve 50% control would not be feasible, either economically or within constraints specific to the maximum reasonable particle loading to the ESP. Subsequently, with SO{sub 3} control via trona injection upstream of the APH, economically feasible mercury removal rates could be achieved with PAC injection, excepting balance-of-plant concerns. The results are summarized along with the impacts of the dual injection process on the air heater, ESP operation, and particulate emissions.

  2. Integrated three-dimensional photonic nanostructures for achieving near-unity solar absorption and superhydrophobicity

    SciTech Connect (OSTI)

    Kuang, Ping; Lin, Shawn-Yu; Hsieh, Mei-Li

    2015-06-07

    In this paper, we proposed and realized 3D photonic nanostructures consisting of ultra-thin graded index antireflective coatings (ARCs) and woodpile photonic crystals. The use of the integrated ARC and photonic crystal structure can achieve broadband, broad-angle near unity solar absorption. The amorphous silicon based photonic nanostructure experimentally shows an average absorption of ∼95% for λ = 400–620 nm over a wide angular acceptance of θ = 0°–60°. Theoretical studies show that a Gallium Arsenide (GaAs) based structure can achieve an average absorption of >95% for λ = 400–870 nm. Furthermore, the use of the slanted SiO{sub 2} nanorod ARC surface layer by glancing angle deposition exhibits Cassie-Baxter state wetting, and superhydrophobic surface is obtained with highest water contact angle θ{sub CB} ∼ 153°. These properties are fundamentally important for achieving maximum solar absorption and surface self-cleaning in thin film solar cell applications.

  3. Nominations Open for 2013 NERSC HPC Achievement Awards

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

    Nominations Open for 2013 NERSC HPC Achievement Awards Nominations Open for 2013 NERSC HPC Achievement Awards January 1, 2013 by Richard Gerber Nominations are open for the 2013 NERSC Award for Innovative Use of High Performance Computing and the 2013 NERSC Award for High Impact Scientific Achievement. These are the first of what are planned to be annual awards. Current NERSC Principal Investigators, Project Managers, and PI Proxies may nominate any NERSC user or collaboratory group. The

  4. NERSC Announces 4th Annual HPC Achievement Award Winners

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

    Announces 4th Annual HPC Achievement Award Winners NERSC Announces 4th Annual HPC Achievement Award Winners March 22, 2016 NERSC winners 2016 Left to right: Charles Koven, Nathan Howard, Scott French. Not pictured: William Riley, David Lawrence, Min Si. Image: Margie Wylie, Berkeley Lab The Department of Energy's National Energy Research Scientific Computing Center (NERSC) announced the winners of the 2016 High Performance Computing (HPC) Achievement Awards today (March 22) during the annual

  5. NERSC Announces Winners of Inaugural HPC Achievement Awards

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

    Announces Winners of Inaugural HPC Achievement Awards NERSC Announces Winners of Inaugural HPC Achievement Awards February 14, 2013 Contact: Linda Vu, lvu@lbl.gov, +1 510 495 2402 XBD201009 01166 03 NERSC's Cray XE6 "Hopper" The Department of Energy's National Energy Research Scientific Computing Center (NERSC) announced the winners of their inaugural High Performance Computing (HPC) Achievement Awards on Wednesday at the annual NERSC User Group meeting at the Lawrence Berkeley

  6. NERSC Honors Third Annual HPC Achievement Award Winners

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

    Honors Third Annual HPC Achievement Award Winners NERSC Honors Third Annual HPC Achievement Award Winners February 24, 2015 2015 NERSC award winners Third annual NERSC HPC Achievement Award winners: (left to right) Taylor Barnes, Caltech; Carlo Benedetti, Berkeley Lab BELLA program; and Ken Chen, UC Santa Cruz. Not pictured: Craig Tull, SPOT Suite project. The Department of Energy's National Energy Research Scientific Computing Center (NERSC) announced the winners of its third annual High

  7. NERSC Staff Honored with Director's Awards for Exceptional Achievement

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

    Staff Honored with Director's Awards for Exceptional Achievement NERSC Staff Honored with Director's Awards for Exceptional Achievement September 14, 2015 Jon Bashor, jbashor@lbl.gov, 510-486-5849 Directors-Awards.jpg The award recipeients: (Top row, clockwise) Deborah Agarwal (CRD), Eli Dart (ESnet), Brent Draney (NERSC), Lynne Rippe (NERSC) and James Sethian (CRD). Five employees in the Computing Sciences organization are recipients of this year's Director's Awards for Exceptional Achievement,

  8. Cook Composites and Polymers Company Achieves Superior Energy Performance

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

    Gold Certification | Department of Energy Cook Composites and Polymers Company Achieves Superior Energy Performance Gold Certification Cook Composites and Polymers Company Achieves Superior Energy Performance Gold Certification The case study highlights a Cook Composites and Polymers Co. (CCP) plant in Houston, Texas, as one of the first participants in the Superior Energy Performance (SEP) plant certification program. Cook Composites and Polymers Company Achieves Superior Energy Performance

  9. Marine Corps Base Quantico Achieves 85% Savings in Parking Lighting |

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

    Department of Energy Quantico Achieves 85% Savings in Parking Lighting Marine Corps Base Quantico Achieves 85% Savings in Parking Lighting Marine Corps Base Quantico (MCBQ) in Virginia Marine Corps Base Quantico (MCBQ) in Virginia Document provides an overview of how the Marine Corps Base Quantico (MCBQ) achieved 85% energy savings in parking lighting at one of its parking lots as part of a major overhaul of its outdoor lighting (replacing 2,000 fixtures with light-emitting diode lights),

  10. Achieving Water-Sustainable Bioenergy Production | Department of Energy

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

    Achieving Water-Sustainable Bioenergy Production Achieving Water-Sustainable Bioenergy Production Breakout Session 3-A: Growing a Water-Smart Bioeconomy Achieving Water-Sustainable Bioenergy Production May Wu, Principal Environmental System Analyst in the Energy Systems Division, Argonne National Laboratory wu_bioenergy_2015.pdf (3.01 MB) More Documents & Publications Assessing Impact of Biofuel Production on Regional Water Resource Use and Availability Integrated Biorefinery Process

  11. Peter Nugent and Elizabeth Bautista Honored for Exceptional Achievement

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

    Peter Nugent and Elizabeth Bautista Honored for Exceptional Achievement Peter Nugent and Elizabeth Bautista Honored for Exceptional Achievement August 12, 2013 Peter Nugent (left) accepting award from Eddy Rubin. (right). Peter Nugent and Elizabeth Bautista of the National Energy Research Scientific Computing Center (NERSC) have been recognized with Lawrence Berkeley National Laboratory (Berkeley Lab) Director's Awards of Exceptional Achievement. The awards were presented Aug. 8 in a ceremony in

  12. Alignment: Achieving Management & Operational Excellence | Department of

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

    Energy Alignment: Achieving Management & Operational Excellence Alignment: Achieving Management & Operational Excellence Secretary Chu released the DOE Strategic Plan in May 2011, which established a vision for transformational clean energy, science, and security solutions that are significant, timely, and cost effective. Successfully achieving this vision will require a sustained commitment to management and operational excellence from Headquarters to every site office, service

  13. Opening Remarks - Bob Cochran - Achieving Excellence in Management and

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

    Operations | Department of Energy Opening Remarks - Bob Cochran - Achieving Excellence in Management and Operations Opening Remarks - Bob Cochran - Achieving Excellence in Management and Operations Presentation from the 2015 DOE National Cleanup Workshop. Opening Remarks - Bob Cochran - Achieving Excellence in Management and Operations (423.03 KB) More Documents & Publications QA Corporate Board Meeting - November 2008 Focus Group Meeting (Topical Meeting) Technical Standards Newsletter

  14. Energy Department Forecasts Geothermal Achievements in 2015 | Department of

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

    Energy Forecasts Geothermal Achievements in 2015 Energy Department Forecasts Geothermal Achievements in 2015 The 40th annual Stanford Geothermal Workshop in January featured speakers in the geothermal sector, including Jay Nathwani, Acting Director of the Energy Department's Geothermal Technologies Office. Nathwani shared achievements and challenges in the program's technical portfolio. The 40th annual Stanford Geothermal Workshop in January featured speakers in the geothermal sector,

  15. Prospects for achieving high dynamic compression with low energy...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Prospects for achieving high dynamic compression with low energy Citation Details In-Document Search ... Publication Date: 2012-07-30 OSTI Identifier: 1057245 Report ...

  16. Sherwin-Williams' Richmond, Kentucky, Facility Achieves 26% Energy...

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

    Sherwin-Williams' Richmond, Kentucky, Facility Achieves 26% Energy Intensity Reduction; Leads to Corporate Adoption of Save Energy Now LEADER Sherwin-Williams' Richmond, Kentucky, ...

  17. Overcoming the Barrier to Achieving Large-Scale Production -...

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

    Semprius Confidential 1 Overcoming the Barriers to Achieving Large-Scale Production - A ... August 31, 2011 Semprius Confidential 2 Semprius Overview Background Company: * Leading ...

  18. Top-5 Achievements at the Princeton Plasma Physics Laboratory...

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

    Top-5 Achievements at the Princeton Plasma Physics Laboratory in 2015 By John Greenwald ... the U.S. Department of Energy's Princeton Plasma Physics Laboratory advanced the ...

  19. NREL 2012 Achievement of Ethanol Cost Targets: Biochemical Ethanol...

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

    information, apparatus, product, or process disclosed, ... Key sustainability metrics associated with the 2012 SOT biorefinery ... used a staged addition policy in an attempt to achieve ...

  20. Greensburg Implements High-Efficiency Building Codes to Achieve...

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

    ... Kansas, as a Model Green Community: A Case Study, National Renewable Energy Laboratory. ... achieving LEED Gold certification * BTI-John Deere dealership-LEED Platinum facility ...

  1. Enrico Fermi Achieves First Self Sustain Nuclear Chain Reaction...

    National Nuclear Security Administration (NNSA)

    Self Sustain Nuclear Chain Reaction Chicago, IL Metallurgical Laboratory scientists led by Enrico Fermi achieve the first self-sustained nuclear chain reaction in pile...

  2. Fraction of Theoretical Specific Energy Achieved at Battery Pack...

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

    Fraction of Theoretical Specific Energy Achieved at Battery Pack Level Is Very Sensitive ... factors in determining the fraction of battery material specific energy captured at pack ...

  3. Pantex Plant Achieves Key Safety Milestone Ahead of Schedule...

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

    Achieves Key Safety Milestone Ahead of Schedule | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

  4. New World Record Achieved in Solar Cell Technology | Department...

    Energy Savers [EERE]

    "Reaching this milestone heralds a great achievement for the Department of Energy and for solar energy engineering worldwide," Assistant Secretary Karsner said. "We are eager to ...

  5. Workers at Hanford Site Achieve Recovery Act Legacy Cleanup Goals...

    Office of Environmental Management (EM)

    Recovery and Reinvestment Act goals to accelerate the cleanup of legacy waste and fuels. Workers recently achieved three waste management goals ahead of a Sept. 30, 2011 target. ...

  6. NREL Staff Recognized by DOE for Outstanding Achievements | Awards...

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

    areas. This year, the Hydrogen and Fuel Cells Program honored four National Renewable Energy Laboratory (NREL) staff for their outstanding achievements. See the full list of...

  7. Volvo Trucks Achieves Lofty Energy and Carbon Goals

    SciTech Connect (OSTI)

    2011-03-31

    Case study - Volvo's New River Valley facility leveraged company and ITP resources to achieve plant-wide targets that surpass both corporate and Save Energy Now goals.

  8. Nominations Open for 2013 NERSC HPC Achievement Awards

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

    Nominations Open for 2013 NERSC HPC Achievement Awards January 1, 2013 by Richard Gerber Nominations are open for the 2013 NERSC Award for Innovative Use of High Performance...

  9. Record-Setting Year for Nuclear Weapon Dismantlement Achieved...

    National Nuclear Security Administration (NNSA)

    Record-Setting Year for Nuclear Weapon Dismantlement Achieved at the Y-12 National Security Complex | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS...

  10. NREL Achieves World Record Performance For Thin Film Solar Cell...

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

    NREL Achieves World Record Performance For Thin Film Solar Cell Technology Golden, Colo., May 10, 1996 -- Scientists at the U. S. Department of Energy's National Renewable Energy ...

  11. Three dimensional winds: A maximum cross-correlation application to elastic lidar data

    SciTech Connect (OSTI)

    Buttler, W.T.

    1996-05-01

    Maximum cross-correlation techniques have been used with satellite data to estimate winds and sea surface velocities for several years. Los Alamos National Laboratory (LANL) is currently using a variation of the basic maximum cross-correlation technique, coupled with a deterministic application of a vector median filter, to measure transverse winds as a function of range and altitude from incoherent elastic backscatter lidar (light detection and ranging) data taken throughout large volumes within the atmospheric boundary layer. Hourly representations of three-dimensional wind fields, derived from elastic lidar data taken during an air-quality study performed in a region of complex terrain near Sunland Park, New Mexico, are presented and compared with results from an Environmental Protection Agency (EPA) approved laser doppler velocimeter. The wind fields showed persistent large scale eddies as well as general terrain-following winds in the Rio Grande valley.

  12. Enhancement of maximum attainable ion energy in the radiation pressure acceleration regime using a guiding structure

    SciTech Connect (OSTI)

    Bulanov, S. S.; Esarey, E.; Schroeder, C. B.; Bulanov, S. V.; Esirkepov, T. Zh.; Kando, M.; Pegoraro, F.; Leemans, W. P.

    2015-03-13

    Radiation Pressure Acceleration is a highly efficient mechanism of laser driven ion acceleration, with the laser energy almost totally transferrable to the ions in the relativistic regime. There is a fundamental limit on the maximum attainable ion energy, which is determined by the group velocity of the laser. In the case of a tightly focused laser pulses, which are utilized to get the highest intensity, another factor limiting the maximum ion energy comes into play, the transverse expansion of the target. Transverse expansion makes the target transparent for radiation, thus reducing the effectiveness of acceleration. Utilization of an external guiding structure for the accelerating laser pulse may provide a way of compensating for the group velocity and transverse expansion effects.

  13. Enhancement of maximum attainable ion energy in the radiation pressure acceleration regime using a guiding structure

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bulanov, S. S.; Esarey, E.; Schroeder, C. B.; Bulanov, S. V.; Esirkepov, T. Zh.; Kando, M.; Pegoraro, F.; Leemans, W. P.

    2015-03-13

    Radiation Pressure Acceleration is a highly efficient mechanism of laser driven ion acceleration, with the laser energy almost totally transferrable to the ions in the relativistic regime. There is a fundamental limit on the maximum attainable ion energy, which is determined by the group velocity of the laser. In the case of a tightly focused laser pulses, which are utilized to get the highest intensity, another factor limiting the maximum ion energy comes into play, the transverse expansion of the target. Transverse expansion makes the target transparent for radiation, thus reducing the effectiveness of acceleration. Utilization of an external guidingmore » structure for the accelerating laser pulse may provide a way of compensating for the group velocity and transverse expansion effects.« less

  14. Evaluation of Maximum Radionuclide Groundwater Concentrations for Basement Fill Model. Zion Station Restoration Project

    SciTech Connect (OSTI)

    Sullivan, Terry

    2014-12-02

    ZionSolutions is in the process of decommissioning the Zion Nuclear Power Plant in order to establish a new water treatment plant. There is some residual radioactive particles from the plant which need to be brought down to levels so an individual who receives water from the new treatment plant does not receive a radioactive dose in excess of 25 mrem/y⁻¹. The objectives of this report are: (a) To present a simplified conceptual model for release from the buildings with residual subsurface structures that can be used to provide an upper bound on contaminant concentrations in the fill material; (b) Provide maximum water concentrations and the corresponding amount of mass sorbed to the solid fill material that could occur in each building for use in dose assessment calculations; (c) Estimate the maximum concentration in a well located outside of the fill material; and (d) Perform a sensitivity analysis of key parameters.

  15. U.S. Lower 48 States Onshore Maximum Number of Active Crews Engaged in

    Gasoline and Diesel Fuel Update (EIA)

    Seismic Surveying (Number of Elements) Onshore Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements) U.S. Lower 48 States Onshore Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2000 0 0 41 41 38 43 44 45 43 46 46 48 2001 44 45 45 47 45 42 42 41 39 39 42 41 2002 38 40 35 32 32 32 34 33 37 38 35 31 2003 28 29 28 27 24 25 28 30 30 31 31 32 2004 33 35 35 36 35 39 38 39 40 42 42 41

  16. U.S. Maximum Number of Active Crews Engaged in Seismic Surveying (Number of

    Gasoline and Diesel Fuel Update (EIA)

    Elements) Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements) U.S. Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2000 0 0 62 63 59 63 58 61 59 63 62 65 2001 61 61 63 65 64 60 58 56 54 58 59 58 2002 54 57 54 50 51 50 52 50 56 57 50 43 2003 40 41 41 40 38 39 41 43 39 39 38 42 2004 43 45 45 45 44 49 48 49 48 48 49 50 2005 52 53 51 50 55 57 54 55 56 57 57 58 2006 55 57 59 58 58 57

  17. Alaska Maximum Number of Active Crews Engaged in Seismic Surveying (Number

    Gasoline and Diesel Fuel Update (EIA)

    of Elements) Seismic Surveying (Number of Elements) Alaska Maximum Number of Active Crews Engaged in Seismic Surveying (Number of Elements) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2000 0 0 2 3 3 3 1 1 0 0 0 0 2001 0 0 0 0 2 2 0 0 0 0 0 0 2002 2 2 2 2 2 2 2 2 2 2 2 1 2003 0 0 2 2 2 2 2 2

  18. Direct tests of micro channel plates as the active element of a new shower maximum detector

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ronzhin, A.; Los, S.; Ramberg, E.; Apresyan, A.; Xie, S.; Spiropulu, M.; Kim, H.

    2015-05-22

    We continue the study of micro channel plates (MCP) as the active element of a shower maximum (SM) detector. We present below test beam results obtained with MCPs detecting directly secondary particles of an electromagnetic shower. The MCP efficiency to shower particles is close to 100%. In conclusion, the time resolution obtained for this new type of the SM detector is at the level of 40 ps.

  19. Hydrodynamic equations for electrons in graphene obtained from the maximum entropy principle

    SciTech Connect (OSTI)

    Barletti, Luigi

    2014-08-15

    The maximum entropy principle is applied to the formal derivation of isothermal, Euler-like equations for semiclassical fermions (electrons and holes) in graphene. After proving general mathematical properties of the equations so obtained, their asymptotic form corresponding to significant physical regimes is investigated. In particular, the diffusive regime, the Maxwell-Boltzmann regime (high temperature), the collimation regime and the degenerate gas limit (vanishing temperature) are considered.

  20. Direct tests of micro channel plates as the active element of a new shower maximum detector

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ronzhin, A.; Los, S.; Ramberg, E.; Apresyan, A.; Xie, S.; Spiropulu, M.; Kim, H.

    2015-05-22

    We continue the study of micro channel plates (MCP) as the active element of a shower maximum (SM) detector. We present below test beam results obtained with MCPs detecting directly secondary particles of an electromagnetic shower. The MCP efficiency to shower particles is close to 100%. Furthermore, the time resolution obtained for this new type of the SM detector is at the level of 40 ps.

  1. A new look at maximum and minimum temperature trends for the globe

    SciTech Connect (OSTI)

    Easterling, D.R.; Peterson, T.C.; Karl, T.R.

    1997-11-01

    A number of recent studies have established that differential changes in daily maximum and minimum temperatures are occurring, resulting in changes in the diurnal temperature range (DTR) for many parts of the globe. Large-scale trends in the USA indicate that minimum temperatures are increasing at a faster rate than maximum temperatures, resulting in a narrowing in the DTR. This paper updates and extends the analysis of changes in the DTR in three ways: (1) by increasing the areal coverage to more than half the global landmass, (2) by addressing the issue of homogeneity of the data, and (3) by examining the potential effects of urban stations on the calculated trends. The update includes data for an additional 15% of the global land area and an extension of the analysis period used in a previous study. Homogeneity techniques were used on the data to adjust individual station data for undocumented discontinuities. Annual maximum and minimum temperature and DTR time series for the 1950-1993 period averaged over 54% of the total global land area are presented. The trend for the maximum temperature is 0.88 C/100 years, which is consistent with earlier findings. However, the trend for the minimum temperature is 1.86 C/100 years; this is less than found in previous analyses and leads to a smaller trend in the DTR. This finding is not surprising since much of the data added in this study are for tropical and sub-tropical regions where temperature trends are not expected to be as large as in higher latitude regions. The effect of urbanization on the global trends is found to be on the order of 0.1 C/100 years or less, which is consistent with previous investigations. 14 refs., 2 figs.

  2. On Parallel Push-Relabel based Algorithms for Bipartite Maximum Matching

    SciTech Connect (OSTI)

    Langguth, Johannes; Azad, Md Ariful; Halappanavar, Mahantesh; Manne, Fredrik

    2014-07-01

    We study multithreaded push-relabel based algorithms for computing maximum cardinality matching in bipartite graphs. Matching is a fundamental combinatorial (graph) problem with applications in a wide variety of problems in science and engineering. We are motivated by its use in the context of sparse linear solvers for computing maximum transversal of a matrix. We implement and test our algorithms on several multi-socket multicore systems and compare their performance to state-of-the-art augmenting path-based serial and parallel algorithms using a testset comprised of a wide range of real-world instances. Building on several heuristics for enhancing performance, we demonstrate good scaling for the parallel push-relabel algorithm. We show that it is comparable to the best augmenting path-based algorithms for bipartite matching. To the best of our knowledge, this is the first extensive study of multithreaded push-relabel based algorithms. In addition to a direct impact on the applications using matching, the proposed algorithmic techniques can be extended to preflow-push based algorithms for computing maximum flow in graphs.

  3. Route-Based Control of Hybrid Electric Vehicles: Preprint

    SciTech Connect (OSTI)

    Gonder, J. D.

    2008-01-01

    Today's hybrid electric vehicle controls cannot always provide maximum fuel savings over all drive cycles. Route-based controls could improve HEV fuel efficiency by 2%-4% and help save nearly 6.5 million gallons of fuel annually.

  4. Heliostat control

    DOE Patents [OSTI]

    Kaehler, James A.

    1984-01-01

    An improvement in a system and method of controlling heliostat in which the heliostat is operable in azimuth and elevation by respective stepper motors and including the respective steps or means for calculating the position for the heliostat to be at a commanded position, determining the number of steps in azimuth and elevation for each respective motor to get to the commanded position and energizing both the azimuth and elevation stepper motors to run in parallel until predetermined number of steps away from the closest commanded position in azimuth and elevation so that the closest position has been achieved, and thereafter energizing only the remaining motor to bring it to its commanded position. In this way, the heliostat can be started from a stowed position in the morning and operated by a computer means to its commanded position and kept correctly oriented throughout the day using only the time of the day without requiring the usual sensors and feedback apparatus. A computer, or microprocessor, can then control a plurality of many heliostats easily and efficiently throughout the day.

  5. Solutions for VOC and HAPS control on natural gas fired internal combustion engines

    SciTech Connect (OSTI)

    Marcus, J.Z.; Sleigh, S.; Cotherman, R.

    1996-12-31

    Natural gas fired stationary internal combustion engines (IC engines) emit volatile organic compounds (VOC) and hazardous air pollutants (HAP) as part of their normal operations. VOC and HAP emissions are coming under increased scrutiny with the advent of such Clean Air Act Amendments of 1990 regulations as Title I`s Reasonably Available Control Technology (RACT), Title III`s Maximum Achievable Control Technology (MACT) and Title V`s Operating Permit Program (Title V). In addition, many states are imposing more stringent emission limits on these sources. These emissions may also contribute to the reportable chemicals from the total facility under SARA Title III. Numerous facilities nationwide are interested in reducing these emissions in order to comply with current requirements, to opt out of requirements or to reduce reportable chemicals. This paper will examine the source of these emissions, and discuss combustion control technologies and system operating flexibility, end-of-pipe control technologies, and system tuning opportunities which have the potential to reduce VOC and HAP emissions from IC engines. Data will be presented on potential emission reduction efficiencies achievable using the various control options. 7 refs., 4 tabs.

  6. Achieving atomic resolution magnetic dichroism by controlling the phase symmetry of an electron probe

    SciTech Connect (OSTI)

    Rusz, Jan; Idrobo, Juan -Carlos; Bhowmick, Somnath

    2014-09-30

    The calculations presented here reveal that an electron probe carrying orbital angular momentum is just a particular case of a wider class of electron beams that can be used to measure electron magnetic circular dichroism (EMCD) with atomic resolution. It is possible to obtain an EMCD signal with atomic resolution by simply breaking the symmetry of the electron probe phase front using the aberration-corrected optics of a scanning transmission electron microscope. The probe’s required phase distribution depends on the sample’s magnetic symmetry and crystal structure. The calculations indicate that EMCD signals that use the electron probe’s phase are as strong as those obtained by nanodiffraction methods.

  7. Achieving atomic resolution magnetic dichroism by controlling the phase symmetry of an electron probe

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rusz, Jan; Idrobo, Juan -Carlos; Bhowmick, Somnath

    2014-09-30

    The calculations presented here reveal that an electron probe carrying orbital angular momentum is just a particular case of a wider class of electron beams that can be used to measure electron magnetic circular dichroism (EMCD) with atomic resolution. It is possible to obtain an EMCD signal with atomic resolution by simply breaking the symmetry of the electron probe phase front using the aberration-corrected optics of a scanning transmission electron microscope. The probe’s required phase distribution depends on the sample’s magnetic symmetry and crystal structure. The calculations indicate that EMCD signals that use the electron probe’s phase are as strongmore » as those obtained by nanodiffraction methods.« less

  8. Achieving Record Efficiency for Blue OLEDs by Controlling the Charge Balance

    Broader source: Energy.gov [DOE]

    Researchers at the University of Florida (UF) have demonstrated a blue phosphorescent organic light-emitting diode (OLED) with a peak power efficiency of 50 lm/W and an external quantum efficiency exceeding 20 percent at a luminance of 1,000 cd/m2, using no external light extraction techniques. This accomplishment is believed to be the world record in blue OLED efficiency.

  9. Thermal battery for portable climate control

    SciTech Connect (OSTI)

    Narayanan, S; Li, XS; Yang, S; Kim, H; Umans, A; McKay, IS; Wang, EN

    2015-07-01

    Current technologies that provide climate control in the transportation sector are quite inefficient. In gasoline-powered vehicles, the use of air-conditioning is known to result in higher emissions of greenhouse gases and pollutants apart from decreasing the gas-mileage. On the other hand, for electric vehicles (EVs), a drain in the onboard electric battery due to the operation of heating and cooling system results in a substantial decrease in the driving range. As an alternative to the conventional climate control system, we are developing an adsorption-based thermal battery (ATB), which is capable of storing thermal energy, and delivering both heating and cooling on demand, while requiring minimal electric power supply. Analogous to an electrical battery, the ATB can be charged for reuse. Furthermore, it promises to be compact, lightweight, and deliver high performance, which is desirable for mobile applications. In this study, we describe the design and operation of the ATB-based climate control system. We present a general theoretical framework to determine the maximum achievable heating and cooling performance using the ATB. The framework is then applied to study the feasibility of ATB integration in EVs, wherein we analyze the use of NaX zeolite-water as the adsorbent-refrigerant pair. In order to deliver the necessary heating and cooling performance, exceeding 2.5 kW h thermal capacity for EVs, the analysis determines the optimal design and operating conditions. While the use of the ATB in EVs can potentially enhance its driving range, it can also be used for climate control in conventional gasoline vehicles, as well as residential and commercial buildings as a more efficient and environmentally-friendly alternative. (C) 2015 Elsevier Ltd. All rights reserved.

  10. Controls for Solid-State Lighting

    SciTech Connect (OSTI)

    Rubinstein, Francis

    2007-06-22

    This study predicts new hybrid lighting applications for LEDs. In hybrid lighting, LEDs provide a low-energy 'standby' light level while another, more powerful, efficient light source provides light for occupied periods. Lighting controls will allow the two light sources to work together through an appropriate control strategy, typically motion-sensing. There are no technical barriers preventing the use of low through high CRI LEDs for standby lighting in many interior and exterior applications today. The total luminous efficacy of LED systems could be raised by increasing the electrical efficiency of LED drivers to the maximum practically achievable level (94%). This would increase system luminous efficacy by 20-25%. The expected market volumes for many types of LEDs should justify the evolution of new LED drivers that use highly efficient ICs and reduce parts count by means of ASICs. Reducing their electronics parts count by offloading discrete components onto integrated circuits (IC) will allow manufacturers to reduce the cost of LED driver electronics. LED luminaire manufacturers will increasingly integrate the LED driver and thermal management directly in the LED fixture. LED luminaires of the future will likely have no need for separable lamp and ballast because the equipment life of all the LED luminaire components will all be about the same (50,000 hours). The controls and communications techniques used for communicating with conventional light sources, such as dimmable fluorescent lighting, are appropriate for LED illumination for energy management purposes. DALI has been used to control LED systems in new applications and the emerging ZigBee protocol could be used for LEDs as well. Major lighting companies are already moving in this direction. The most significant finding is that there is a significant opportunity to use LEDs today for standby lighting purposes. Conventional lighting systems can be made more efficient still by using LEDs to provide a low