States

Titanium-Alloy Power Capacitor: High-Power Titanate Capacitor for Power Electronics (open access)

Titanium-Alloy Power Capacitor: High-Power Titanate Capacitor for Power Electronics

ADEPT Project: There is a constant demand for better performing, more compact, lighter weight, and lower cost electronic devices. Unfortunately, the materials traditionally used to make components for electronic devices have reached their limits. Case Western is developing capacitors made of new materials that could be used to produce the next generation of compact and efficient high-powered consumer electronics and electronic vehicles. A capacitor is an important component of an electronic device. It stores an electric charge and then discharges it into an electrical circuit in the device. Case Western is creating its capacitors from titanium, an abundant material extracted from ore which can be found in the U.S. Case Western's capacitors store electric charges on the surfaces of films, which are grown on a titanium alloy electrode that is formed as a spinal column with attached branches. The new material and spine design make the capacitor smaller and lighter than traditional capacitors, and they enable the component to store 300% more energy than capacitors of the same weight made of tantalum, the current industry standard. Case Western's titanium-alloy capacitors also spontaneously self-repair, which prolongs their life.
Date: September 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Iron-Air Rechargeable Battery: A Robust and Inexpensive Iron-Air Rechargeable Battery for Grid-Scale Energy Storage (open access)

Iron-Air Rechargeable Battery: A Robust and Inexpensive Iron-Air Rechargeable Battery for Grid-Scale Energy Storage

GRIDS Project: USC is developing an iron-air rechargeable battery for large-scale energy storage that could help integrate renewable energy sources into the electric grid. Iron-air batteries have the potential to store large amounts of energy at low cost—iron is inexpensive and abundant, while oxygen is freely obtained from the air we breathe. However, current iron-air battery technologies have suffered from low efficiency and short life spans. USC is working to dramatically increase the efficiency of the battery by placing chemical additives on the battery’s iron-based electrode and restructuring the catalysts at the molecular level on the battery’s air-based electrode. This can help the battery resist degradation and increase life span. The goal of the project is to develop a prototype iron-air battery at significantly cost lower than today’s best commercial batteries.
Date: October 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Economics definitions, methods, models, and analysis procedures for Homeland Security applications. (open access)

Economics definitions, methods, models, and analysis procedures for Homeland Security applications.

This report gives an overview of the types of economic methodologies and models used by Sandia economists in their consequence analysis work for the National Infrastructure Simulation&Analysis Center and other DHS programs. It describes the three primary resolutions at which analysis is conducted (microeconomic, mesoeconomic, and macroeconomic), the tools used at these three levels (from data analysis to internally developed and publicly available tools), and how they are used individually and in concert with each other and other infrastructure tools.
Date: January 1, 2010
Creator: Ehlen, Mark Andrew; Loose, Verne William; Vargas, Vanessa N.; Smith, Braeton J.; Warren, Drake E.; Downes, Paula Sue et al.
Object Type: Report
System: The UNT Digital Library
Energy Recovery Linac: Machine Protection System (open access)

Energy Recovery Linac: Machine Protection System

N/A
Date: January 1, 2010
Creator: Z., Altinbas
Object Type: Report
System: The UNT Digital Library
Energy Recovery Linac: Photocathode Deposition and Transport System (open access)

Energy Recovery Linac: Photocathode Deposition and Transport System

N/A
Date: January 1, 2010
Creator: Pate, D.; Ben-Zvi, Ilan; Rao, T.; Burrill, A.; Todd, R.; Smedley, J. et al.
Object Type: Report
System: The UNT Digital Library
Building America Best Practices Series Volume 11. Builders Challenge Guide to 40% Whole-House Energy Savings in the Marine Climate (open access)

Building America Best Practices Series Volume 11. Builders Challenge Guide to 40% Whole-House Energy Savings in the Marine Climate

This best practices guide is the eleventh in a series of guides for builders produced by the U.S. Department of Energy’s Building America Program. This guide book is a resource to help builders design and construct homes that are among the most energy-efficient available, while addressing issues such as building durability, indoor air quality, and occupant health, safety, and comfort. With the measures described in this guide, builders in the marine climate (portions of Washington, Oregon, and California) can achieve homes that have whole house energy savings of 40% over the Building America benchmark (a home built to mid-1990s building practices roughly equivalent to the 1993 Model Energy Code) with no added overall costs for consumers. These best practices are based on the results of research and demonstration projects conducted by Building America’s research teams. The guide includes information for managers, designers, marketers, site supervisors, and subcontractors, as well as case studies of builders who are successfully building homes that cut energy use by 40% in the marine climate. This document is available on the web at www.buildingamerica.gov. This report was originally cleared 06-29-2010. This version is Rev 1 cleared in Nov 2010. The only change is the reference to …
Date: September 1, 2010
Creator: Baechler, Michael C.; Gilbride, Theresa L.; Hefty, Marye G.; Cole, Pamala C.; Williamson, Jennifer L. & Love, Pat M.
Object Type: Report
System: The UNT Digital Library
Utility-Scale Silicon Carbide Semiconductor: Monolithic Silicon Carbide Anode Switched Thyristor for Medium Voltage Power Conversion (open access)

Utility-Scale Silicon Carbide Semiconductor: Monolithic Silicon Carbide Anode Switched Thyristor for Medium Voltage Power Conversion

ADEPT Project: GeneSiC is developing an advanced silicon-carbide (SiC)-based semiconductor called an anode-switched thyristor. This low-cost, compact SiC semiconductor conducts higher levels of electrical energy with better precision than traditional silicon semiconductors. This efficiency will enable a dramatic reduction in the size, weight, and volume of the power converters and electronic devices it's used in.GeneSiC is developing its SiC-based semiconductor for utility-scale power converters. Traditional silicon semiconductors can't process the high voltages that utility-scale power distribution requires, and they must be stacked in complicated circuits that require bulky insulation and cooling hardware. GeneSiC's semiconductors are well suited for high-power applications like large-scale renewable wind and solar energy installations.
Date: September 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Energy Recovery Linac: Beam Dynamics, Parameters and Physics to be learned (open access)

Energy Recovery Linac: Beam Dynamics, Parameters and Physics to be learned

N/A
Date: February 1, 2010
Creator: D., Kayran
Object Type: Report
System: The UNT Digital Library
Structural and Morphological Properties of Carbon Supports: Effect on Catalyst Degradation (open access)

Structural and Morphological Properties of Carbon Supports: Effect on Catalyst Degradation

The object of this work was to identify correlations between performance losses of Pt electrocatalysts on carbon support materials and the chemical and morphological parameters that describe them. Accelerated stress testing, with an upper potential of 1.2 V, was used to monitor changes to cathode properties, including kinetic performance and effective platinum surface area losses. The structure and chemical compositions were studied using X-ray Photoelectron Spectroscopy and Scanning Electron Microscopy coupled with Digital Image Processing. As this is an ongoing study, it is difficult to draw firm conclusions, though a trend between support surface area overall performance loss was found to exist.
Date: July 1, 2010
Creator: Patel, Anant; Artyushkova, Kateryna; Atanassov, Plamen; Young, Alan; Dutta, Monica; Ahmad, Zaid et al.
Object Type: Article
System: The UNT Digital Library
Advanced Sodium Fast Reactor Accident Source Terms : Research Needs (open access)

Advanced Sodium Fast Reactor Accident Source Terms : Research Needs

An expert opinion elicitation has been used to evaluate phenomena that could affect releases of radionuclides during accidents at sodium-cooled fast reactors. The intent was to identify research needed to develop a mechanistic model of radionuclide release for licensing and risk assessment purposes. Experts from the USA, France, the European Union, and Japan identified phenomena that could affect the release of radionuclides under hypothesized accident conditions. They qualitatively evaluated the importance of these phenomena and the need for additional experimental research. The experts identified seven phenomena that are of high importance and have a high need for additional experimental research: High temperature release of radionuclides from fuel during an energetic event<U+F0B7>Energetic interactions between molten reactor fuel and sodium coolant and associated transfer of radionuclides from the fuel to the coolant<U+F0B7>Entrainment of fuel and sodium bond material during the depressurization of a fuel rod with breached cladding<U+F0B7>Rates of radionuclide leaching from fuel by liquid sodium<U+F0B7>Surface enrichment of sodium pools by dissolved and suspended radionuclides<U+F0B7>Thermal decomposition of sodium iodide in the containment atmosphere<U+F0B7>Reactions of iodine species in the containment to form volatile organic iodides. Other issues of high importance were identified that might merit further research as development of the mechanistic model …
Date: September 1, 2010
Creator: Powers, Dana Auburn; Clement, Bernard; Denning, Richard; Ohno, Shuji & Zeyen, Roland
Object Type: Report
System: The UNT Digital Library
Energy Recovery Linac: 5 Cell 704 MHz SRF Cavity (open access)

Energy Recovery Linac: 5 Cell 704 MHz SRF Cavity

N/A
Date: January 1, 2010
Creator: A., Burrill
Object Type: Report
System: The UNT Digital Library
Modeling Single Well Injection-Withdrawal (SWIW) Tests for Characterization of Complex Fracture-Matrix Systems (open access)

Modeling Single Well Injection-Withdrawal (SWIW) Tests for Characterization of Complex Fracture-Matrix Systems

The ability to reliably predict flow and transport in fractured porous rock is an essential condition for performance evaluation of geologic (underground) nuclear waste repositories. In this report, a suite of programs (TRIPOLY code) for calculating and analyzing flow and transport in two-dimensional fracture-matrix systems is used to model single-well injection-withdrawal (SWIW) tracer tests. The SWIW test, a tracer test using one well, is proposed as a useful means of collecting data for site characterization, as well as estimating parameters relevant to tracer diffusion and sorption. After some specific code adaptations, we numerically generated a complex fracture-matrix system for computation of steady-state flow and tracer advection and dispersion in the fracture network, along with solute exchange processes between the fractures and the porous matrix. We then conducted simulations for a hypothetical but workable SWIW test design and completed parameter sensitivity studies on three physical parameters of the rock matrix - namely porosity, diffusion coefficient, and retardation coefficient - in order to investigate their impact on the fracture-matrix solute exchange process. Hydraulic fracturing, or hydrofracking, is also modeled in this study, in two different ways: (1) by increasing the hydraulic aperture for flow in existing fractures and (2) by adding a …
Date: November 1, 2010
Creator: Cotte, F.P.; Doughty, C. & Birkholzer, J.
Object Type: Report
System: The UNT Digital Library
Low-Cost Flexible Electrochromic Film for Energy Efficient Buildings (open access)

Low-Cost Flexible Electrochromic Film for Energy Efficient Buildings

Broad Funding Opportunity Announcement Project: ITN is addressing the high cost of electrochromic windows with a new manufacturing process: roll-to-roll deposition of the film onto flexible plastic surfaces. Production of electrochromic films on plastic requires low processing temperatures and uniform film quality over large surface areas. ITN is overcoming these challenges using its previous experience in growing flexible thin-film solar cells and batteries. By developing sensor-based controls, ITN’s roll-to-roll manufacturing process yields more film over a larger area than traditional film deposition methods. Evaluating deposition processes from a control standpoint ultimately strengthens the ability for ITN to handle unanticipated deviations quickly and efficiently, enabling more consistent large-volume production. The team is currently moving from small-scale prototypes into pilot-scale production to validate roll-to-roll manufacturability and produce scaled prototypes that can be proven in simulated operating conditions. Electrochromic plastic films could also open new markets in building retrofit applications, vastly expanding the potential energy savings.
Date: January 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Energy Recovery Linac: Controls System (open access)

Energy Recovery Linac: Controls System

N/A
Date: January 1, 2010
Creator: L., Hoff & Jamilkowski, J.
Object Type: Report
System: The UNT Digital Library
Soluble Lead Flow Battery: Soluble Lead Flow Battery Technology (open access)

Soluble Lead Flow Battery: Soluble Lead Flow Battery Technology

GRIDS Project: General Atomics is developing a flow battery technology based on chemistry similar to that used in the traditional lead-acid battery found in nearly every car on the road today. Flow batteries store energy in chemicals that are held in tanks outside the battery. When the energy is needed, the chemicals are pumped through the battery. Using the same basic chemistry as a traditional battery but storing its energy outside of the cell allows for the use of very low cost materials. The goal is to develop a system that is far more durable than today’s lead-acid batteries, can be scaled to deliver megawatts of power, and which lowers the cost of energy storage below $100 per kilowatt hour.
Date: September 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Environmental geographic information system. (open access)

Environmental geographic information system.

This document describes how the Environmental Geographic Information System (EGIS) was used, along with externally received data, to create maps for the Site-Wide Environmental Impact Statement (SWEIS) Source Document project. Data quality among the various classes of geographic information system (GIS) data is addressed. A complete listing of map layers used is provided.
Date: August 1, 2010
Creator: Peek, Dennis; Helfrich, Donald Alan & Gorman, Susan
Object Type: Report
System: The UNT Digital Library
Hydrogen-Bromine Flow Battery: Hydrogen Bromine Flow Batteries for Grid Scale Energy Storage (open access)

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

GRIDS Project: LBNL is designing a flow battery for grid storage that relies on a hydrogen-bromine chemistry which could be more efficient, last longer and cost less than today’s lead-acid batteries. Flow batteries are fundamentally different from traditional lead-acid batteries because the chemical reactants that provide their energy are stored in external tanks instead of inside the battery. A flow battery can provide more energy because all that is required to increase its storage capacity is to increase the size of the external tanks. The hydrogen-bromine reactants used by LBNL in its flow battery are inexpensive, long lasting, and provide power quickly. The cost of the design could be well below $100 per kilowatt hour, which would rival conventional grid-scale battery technologies.
Date: October 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Methane hydrate distribution from prolonged and repeated formation in natural and compacted sand samples: X-ray CT observations (open access)

Methane hydrate distribution from prolonged and repeated formation in natural and compacted sand samples: X-ray CT observations

To study physical properties of methane gas hydrate-bearing sediments, it is necessary to synthesize laboratory samples due to the limited availability of cores from natural deposits. X-ray computed tomography (CT) and other observations have shown gas hydrate to occur in a number of morphologies over a variety of sediment types. To aid in understanding formation and growth patterns of hydrate in sediments, methane hydrate was repeatedly formed in laboratory-packed sand samples and in a natural sediment core from the Mount Elbert Stratigraphic Test Well. CT scanning was performed during hydrate formation and decomposition steps, and periodically while the hydrate samples remained under stable conditions for up to 60 days. The investigation revealed the impact of water saturation on location and morphology of hydrate in both laboratory and natural sediments during repeated hydrate formations. Significant redistribution of hydrate and water in the samples was observed over both the short and long term.
Date: July 1, 2010
Creator: Rees, E.V.L.; Kneafsey, T.J. & Seol, Y.
Object Type: Article
System: The UNT Digital Library
Novel Geometries for the LHC Crab Cavity (open access)

Novel Geometries for the LHC Crab Cavity

The planned luminosity upgrade to LHC is likely to necessitate a large crossing angle and a local crab crossing scheme. For this scheme crab cavities align bunches prior to collision. The scheme requires at least four such cavities, a pair on each beam line either side of the interaction point (IP). Upstream cavities initiate rotation and downstream cavities cancel rotation. Cancellation is usually done at a location where the optics has re-aligned the bunch. The beam line separation near the IP necessitates a more compact design than is possible with elliptical cavities such as those used at KEK. The reduction in size must be achieved without an increase in the operational frequency to maintain compatibility with the long bunch length of the LHC. This paper proposes a suitable superconducting variant of a four rod coaxial deflecting cavity (to be phased as a crab cavity), and presents analytical models and simulations of suitable designs.
Date: May 1, 2010
Creator: B. Hall,G. Burt,C. Lingwood,Robert Rimmer,Haipeng Wang; Hall, B.; Burt, G.; Lingwood, C.; Rimmer, Robert & Wang, Haipeng
Object Type: Article
System: The UNT Digital Library
Sodium-Beta Batteries for Grid-Scale Storage: Planar Sodium-Beta Batteries for Renewable Integration and Grid Applications (open access)

Sodium-Beta Batteries for Grid-Scale Storage: Planar Sodium-Beta Batteries for Renewable Integration and Grid Applications

Broad Funding Opportunity Announcement Project: EaglePicher is developing a sodium-beta alumina (Na-Beta) battery for grid-scale energy storage. High-temperature Na-Beta batteries are a promising grid-scale energy storage technology, but existing approaches are expensive and unreliable. EaglePicher has modified the shape of the traditional, tubular-shaped Na-Beta battery. It is using an inexpensive stacked design to improve performance at lower temperatures, leading to a less expensive overall storage technology. The new design greatly simplifies the manufacturing process for beta alumina membranes (a key enabling technology), providing a subsequent pathway to the production of scalable, modular batteries at half the cost of the existing tubular designs.
Date: February 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Utility-Scale Power Router: Dynamic Control of Grid Assets Using Direct AC Converter Cells (open access)

Utility-Scale Power Router: Dynamic Control of Grid Assets Using Direct AC Converter Cells

ADEPT Project: Georgia Tech is developing a cost-effective, utility-scale power router that uses an enhanced transformer to more efficiently direct power on the grid. Existing power routing technologies are too expensive for widespread use, but the ability to route grid power to match real-time demand and power outages would significantly reduce energy costs for utilities, municipalities, and consumers. Georgia Tech is adding a power converter to an existing grid transformer to better control power flows at about 1/10th the cost of existing power routing solutions. Transformers convert the high-voltage electricity that is transmitted through the grid into the low-voltage electricity that is used by homes and businesses. The added converter uses fewer steps to convert some types of power and eliminates unnecessary power storage, among other improvements. The enhanced transformer is more efficient, and it would still work even if the converter fails, ensuring grid reliability.
Date: September 1, 2010
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Nanostructured LaF{sub 3}:Ce Quantum Dot Nuclear Radiation Detector (open access)

Nanostructured LaF{sub 3}:Ce Quantum Dot Nuclear Radiation Detector

Many radioactive isotopes have low energy X-rays and high energy gamma rays of interest for detection. The goal of the work presented was to demonstrate the possibility of measuring both low-energy X-rays and relatively high-energy gamma rays simultaneously using the nano-structured lanthanum bromide, lanthanum fluoride, or cerium bromide. The key accomplishments of the project was the building and acquisition of the LaF3:Ce nanocomposite detectors. Nanocomposite detectors are sensitive to {gamma}’s as well as n’s and X-rays.
Date: November 1, 2010
Creator: Guss, P., Guise, R., Reed, M., Mukhopadhyay, S., Yuan, D.
Object Type: Article
System: The UNT Digital Library
Idaho National Laboratory Site Environmental Monitoring Plan (open access)

Idaho National Laboratory Site Environmental Monitoring Plan

This plan describes environmental monitoring as required by U.S. Department of Energy (DOE) Order 450.1, “Environmental Protection Program,” and additional environmental monitoring currently performed by other organizations in and around the Idaho National Laboratory (INL). The objective of DOE Order 450.1 is to implement sound stewardship practices that protect the air, water, land, and other natural and cultural resources that may be impacted by DOE operations. This plan describes the organizations responsible for conducting environmental monitoring across the INL, the rationale for monitoring, the types of media being monitored, where the monitoring is conducted, and where monitoring results can be obtained. This plan presents a summary of the overall environmental monitoring performed in and around the INL without duplicating detailed information in the various monitoring procedures and program plans currently used to conduct monitoring.
Date: October 1, 2010
Creator: Knight, Joanne L.
Object Type: Report
System: The UNT Digital Library
Miscellaneous agreements between the U.S. Department of Energy and Federal, State, and local agencies. (open access)

Miscellaneous agreements between the U.S. Department of Energy and Federal, State, and local agencies.

This document identifies and provides access to source documentation for the Site- Wide Environmental Impact Statement for Sandia National Laboratories/New Mexico. Specifically, it lists agreements between the U.S. Department of Energy (DOE), the National Nuclear Security Administration (NNSA), DOE/NNSA/Sandia Site Office (SSO), Sandia Corporation, and local and state government agencies, Department of Defense, Kirtland Air Force Base, and other federal agencies.
Date: August 1, 2010
Creator: Meincke, Carol L.
Object Type: Report
System: The UNT Digital Library