Opportunities and Challenges for Development of a Mature Concentrating Photovoltaic Power Industry (Revision) (open access)

Opportunities and Challenges for Development of a Mature Concentrating Photovoltaic Power Industry (Revision)

This report summarizes the current status of the CPV industry and is updated from previous versions to include information from the last year. New information presented at the CPV-8 conference is included along with the addition of new companies that have announced their interest in CPV, and estimates of production volumes for 2011 and 2012.
Date: November 1, 2012
Creator: Kurtz, S.
Object Type: Report
System: The UNT Digital Library
Final Report for grant DE-FG02-06ER54888, "Simulation of Beam-Electron Cloud Interactions in Circular Accelerators Using Plasma Models" (open access)

Final Report for grant DE-FG02-06ER54888, "Simulation of Beam-Electron Cloud Interactions in Circular Accelerators Using Plasma Models"

The primary goal of this collaborative proposal was to modify the code QuickPIC and apply it to study the long-time stability of beam propagation in low density electron clouds present in circular accelerators. The UCLA contribution to this collaborative proposal was in supporting the development of the pipelining scheme for the QuickPIC code, which extended the parallel scaling of this code by two orders of magnitude.
Date: November 27, 2012
Creator: Decyk, Viktor K.
Object Type: Report
System: The UNT Digital Library
Sodium pool fire phenomena, sodium pool fire modeling in SOFIRE II, and SOFIRE II calculations for the AFR-100 (open access)

Sodium pool fire phenomena, sodium pool fire modeling in SOFIRE II, and SOFIRE II calculations for the AFR-100

None
Date: November 12, 2012
Creator: Sienicki, J. J. & Moisseytsev, A. (Nuclear Engineering Division)
Object Type: Report
System: The UNT Digital Library
Advanced inactive materials for improved lithium-ion battery safety. (open access)

Advanced inactive materials for improved lithium-ion battery safety.

None
Date: November 1, 2012
Creator: Orendorff, Christopher J.; Nagasubramanian, Ganesan; Lambert, Timothy N.; Fenton, Kyle Ross; Apblett, Christopher Alan; Shaddix, Christopher R. et al.
Object Type: Report
System: The UNT Digital Library
PRODUCTION TPBAR INPUTS FOR CORE DESIGNERS TTQP-1-116 Rev 15 (open access)

PRODUCTION TPBAR INPUTS FOR CORE DESIGNERS TTQP-1-116 Rev 15

The purpose of this controlled document is to provide a convenient reference for tritiumproducing burnable absorber rod (TPBAR) parameters used by reactor core designers.
Date: November 1, 2012
Creator: Collins, Brian A.; Love, Edward F. & Thornhill, Cheryl K.
Object Type: Report
System: The UNT Digital Library
Reduction And Sequestration Of Pertechnetate To Technetium Dioxide And Protection From Reoxidation (open access)

Reduction And Sequestration Of Pertechnetate To Technetium Dioxide And Protection From Reoxidation

This effort is part of the technetium management initiative and provides data for the handling and disposition of technetium. To that end, the objective of this effort was to challenge tin(lI)apatite (Sn(II)apatite) against double-shell tank 241-AN-105 simulant spiked with pertechnetate (TcO{sub 4}). The Sn(II)apatite used in this effort was synthesized on site using a recipe developed at and provided by Sandia National Laboratories; the synthesis provides a high quality product while requiring minimal laboratory effort. The Sn(ll)apatite reduces pertechnetate from the mobile +7 oxidation state to the non-mobile +4 oxidation state. It also sequesters the technetium and does not allow for re-oxidization to the mobile +7 state under acidic or oxygenated conditions within the tested period of time (6 weeks). Previous work indicated that the Sn(II) apatite can achieve an ANSI leachability index in Cast Stone of 12.8. The technetium distribution coefficient for Sn(lI)apatite exhibited a direct correlation with the pH of the technetium-spiked simulant media.
Date: November 7, 2012
Creator: Duncan, J. B.; Johnson, J. M.; Moore, R. C.; Hagerty, K.; Rhodes, R. N.; Huber, H. J. et al.
Object Type: Article
System: The UNT Digital Library
Small-Scale Spray Releases: Initial Aerosol Test Results (open access)

Small-Scale Spray Releases: Initial Aerosol Test Results

One of the events postulated in the hazard analysis at the Waste Treatment and Immobilization Plant (WTP) and other U.S. Department of Energy (DOE) nuclear facilities is a breach in process piping that produces aerosols with droplet sizes in the respirable range. The current approach for predicting the size and concentration of aerosols produced in a spray leak involves extrapolating from correlations reported in the literature. These correlations are based on results obtained from small engineered spray nozzles using pure liquids with Newtonian fluid behavior. The narrow ranges of physical properties on which the correlations are based do not cover the wide range of slurries and viscous materials that will be processed in the WTP and across processing facilities in the DOE complex. Two key technical areas were identified where testing results were needed to improve the technical basis by reducing the uncertainty due to extrapolating existing literature results. The first technical need was to quantify the role of slurry particles in small breaches where the slurry particles may plug and result in substantially reduced, or even negligible, respirable fraction formed by high-pressure sprays. The second technical need was to determine the aerosol droplet size distribution and volume from prototypic …
Date: November 1, 2012
Creator: Mahoney, Lenna A.; Gauglitz, Phillip A.; Kimura, Marcia L.; Brown, Garrett N.; Kurath, Dean E.; Buchmiller, William C. et al.
Object Type: Report
System: The UNT Digital Library
Enhanced Superconducting Gaps in Trilayer High-Temperature Bi (2) Sr (2) Ca (2) Cu (3) O (10+delta) Cuprate Superconductor (open access)

Enhanced Superconducting Gaps in Trilayer High-Temperature Bi (2) Sr (2) Ca (2) Cu (3) O (10+delta) Cuprate Superconductor

None
Date: November 14, 2012
Creator: Ideta, S.; Takashima, K.; Hashimoto, M.; Yoshida, T.; Fujimori, A.; Anzai, H. et al.
Object Type: Article
System: The UNT Digital Library
Impact Of Particle Agglomeration On Accumulation Rates In The Glass Discharge Riser Of HLW Melter (open access)

Impact Of Particle Agglomeration On Accumulation Rates In The Glass Discharge Riser Of HLW Melter

The major factor limiting waste loading in continuous high-level radioactive waste (HLW) melters is an accumulation of particles in the glass discharge riser during a frequent and periodic idling of more than 20 days. An excessive accumulation can produce robust layers a few centimeters thick, which may clog the riser, preventing molten glass from being poured into canisters. Since the accumulation rate is driven by the size of particles we investigated with x-ray microtomography, scanning electron microscopy, and image analysis the impact of spinel forming components, noble metals, and alumina on the size, concentration, and spatial distribution of particles, and on the accumulation rate. Increased concentrations of Fe and Ni in the baseline glass resulted in the formation of large agglomerates that grew over the time to an average size of ~185+-155 {mu}m, and produced >3 mm thick layer after 120 h at 850 deg C. The noble metals decreased the particle size, and therefore significantly slowed down the accumulation rate. Addition of alumina resulted in the formation of a network of spinel dendrites which prevented accumulation of particles into compact layers.
Date: November 12, 2012
Creator: Kruger, A. A.; Rodriguez, C. A.; Matyas, J.; Owen, A. T.; Jansik, D. P. & Lang, J. B.
Object Type: Article
System: The UNT Digital Library
FY2012 Report on Fast Reactor Toolset Work (PROTEUS-Fast) (open access)

FY2012 Report on Fast Reactor Toolset Work (PROTEUS-Fast)

None
Date: November 12, 2012
Creator: Wolters, E. R.; Smith, M. A.; Derstine, K.; Lee, C. H.; Yesilyurt, G. & Marin-Lafleche, A.
Object Type: Report
System: The UNT Digital Library
The Importance of Motor Shaft Alignment, Motor Systems Tip Sheet #4 (Fact Sheet) (open access)

The Importance of Motor Shaft Alignment, Motor Systems Tip Sheet #4 (Fact Sheet)

Motor tip sheet for the Advanced Manufacturing Office.
Date: November 1, 2012
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Parameters for the injection, acceleration, and extraction of uranium ions in Booster, AGS, and RHIC (open access)

Parameters for the injection, acceleration, and extraction of uranium ions in Booster, AGS, and RHIC

N/A
Date: November 27, 2012
Creator: Gardner, C. J.
Object Type: Report
System: The UNT Digital Library
Final Report for "Compact Crab Cavity Design" (open access)

Final Report for "Compact Crab Cavity Design"

The goal of this project is to provide an innovative, new crab cavity design relevant to the MEIC. Through this work, we will provide comprehensive modeling of this new cavity design, including electromagnetic, thermal, and microphonic effects. One most likely candidate configuration is the design put forward by JLab and Lancaster University, UK, researchers known as the four-rod configuration. In the Phase I, Tech-X Corporation researchers performed analysis and design optimization and iteration, utilizing their state-of-the art time-domain particle-in-cell software, on a 400 MHz design for the LHC by JLab and Lancaster University, UK, researchers known as the four-rod design.
Date: November 8, 2012
Creator: Smithe, David N
Object Type: Report
System: The UNT Digital Library
The Cornell-SLAC Pixel Array Detector at LCLS (open access)

The Cornell-SLAC Pixel Array Detector at LCLS

None
Date: November 19, 2012
Creator: Hart, P.; Boutet, S.; Carini, G.; Dragone, A.; Duda, B.; Freytag, D. et al.
Object Type: Article
System: The UNT Digital Library
Ultrasensitive, amplification-free assays for detecting pathogens. (open access)

Ultrasensitive, amplification-free assays for detecting pathogens.

None
Date: November 1, 2012
Creator: Meagher, Robert J.
Object Type: Report
System: The UNT Digital Library
Theoretical calculating the thermodynamic properties of solid sorbents for CO{sub 2} capture applications (open access)

Theoretical calculating the thermodynamic properties of solid sorbents for CO{sub 2} capture applications

Since current technologies for capturing CO{sub 2} to fight global climate change are still too energy intensive, there is a critical need for development of new materials that can capture CO{sub 2} reversibly with acceptable energy costs. Accordingly, solid sorbents have been proposed to be used for CO{sub 2} capture applications through a reversible chemical transformation. By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO{sub 2} sorbent candidates from the vast array of possible solid materials has been proposed and validated. The calculated thermodynamic properties of different classes of solid materials versus temperature and pressure changes were further used to evaluate the equilibrium properties for the CO{sub 2} adsorption/desorption cycles. According to the requirements imposed by the pre- and post- combustion technologies and based on our calculated thermodynamic properties for the CO{sub 2} capture reactions by the solids of interest, we were able to screen only those solid materials for which lower capture energy costs are expected at the desired pressure and temperature conditions. Only those selected CO{sub 2} sorbent candidates were further considered for experimental validations. The ab initio thermodynamic technique has …
Date: November 2, 2012
Creator: Duan, Yuhua
Object Type: Report
System: The UNT Digital Library
Protective, Modular Wave Power Generation System (open access)

Protective, Modular Wave Power Generation System

The concept of small wave energy conversion modules that can be built into large, scalable arrays, in the same vein as solar panels, has been developed. This innovation lends itself to an organic business and development model, and enables the use of large-run manufacturing technology to reduce system costs. The first prototype module has been built to full-scale, and tested in a laboratory wave channel. The device has been shown to generate electricity and dissipate wave energy. Improvements need to be made to the electrical generator and a demonstration of an array of modules should be made in natural conditions.
Date: November 27, 2012
Creator: Vvedensky, Jane M. & Park, Robert Y.
Object Type: Report
System: The UNT Digital Library
Final Technical Report - Integrated Hydrogeophysical and Hydrogeologic Driven Parameter Upscaling for Dual-Domain Transport Modeling (open access)

Final Technical Report - Integrated Hydrogeophysical and Hydrogeologic Driven Parameter Upscaling for Dual-Domain Transport Modeling

The three major components of this research were: 1. Application of minimally invasive, cost effective hydrogeophysical techniques (surface and borehole), to generate fine scale (~1m or less) 3D estimates of subsurface heterogeneity. Heterogeneity is defined as spatial variability in hydraulic conductivity and/or hydrolithologic zones. 2. Integration of the fine scale characterization of hydrogeologic parameters with the hydrogeologic facies to upscale the finer scale assessment of heterogeneity to field scale. 3. Determination of the relationship between dual-domain parameters and practical characterization data.
Date: November 5, 2012
Creator: Shafer, John M
Object Type: Report
System: The UNT Digital Library
PARTICLE IMAGE VELOCIMETRY MEASUREMENTS IN A REPRESENTATIVE GAS-COOLED PRISMATIC REACTOR CORE MODEL: FLOW IN THE COOLANT CHANNELS AND INTERSTITIAL BYPASS GAPS (open access)

PARTICLE IMAGE VELOCIMETRY MEASUREMENTS IN A REPRESENTATIVE GAS-COOLED PRISMATIC REACTOR CORE MODEL: FLOW IN THE COOLANT CHANNELS AND INTERSTITIAL BYPASS GAPS

Core bypass flow is one of the key issues with the prismatic Gas Turbine-Modular Helium Reactor, and it refers to the coolant that navigates through the interstitial, non-cooling passages between the graphite fuel blocks instead of traveling through the designated coolant channels. To determine the bypass flow, a double scale representative model was manufactured and installed in the Matched Index-of-Refraction flow facility; after which, stereo Particle Image Velocimetry (PIV) was employed to measure the flow field within. PIV images were analyzed to produce vector maps, and flow rates were calculated by numerically integrating over the velocity field. It was found that the bypass flow varied between 6.9-15.8% for channel Reynolds numbers of 1,746 and 4,618. The results were compared to computational fluid dynamic (CFD) pre-test simulations. When compared to these pretest calculations, the CFD analysis appeared to under predict the flow through the gap.
Date: November 1, 2012
Creator: Conder, Thomas E.; Skifton, Richard & Budwig, Ralph
Object Type: Article
System: The UNT Digital Library
Geomechanical Simulation of Fluid-Driven Fractures (open access)

Geomechanical Simulation of Fluid-Driven Fractures

The project supported graduate students working on experimental and numerical modeling of rock fracture, with the following objectives: (a) perform laboratory testing of fluid-saturated rock; (b) develop predictive models for simulation of fracture; and (c) establish educational frameworks for geologic sequestration issues related to rock fracture. These objectives were achieved through (i) using a novel apparatus to produce faulting in a fluid-saturated rock; (ii) modeling fracture with a boundary element method; and (iii) developing curricula for training geoengineers in experimental mechanics, numerical modeling of fracture, and poroelasticity.
Date: November 30, 2012
Creator: Makhnenko, R.; Nikolskiy, D.; Mogilevskaya, S. & Labuz, J.
Object Type: Report
System: The UNT Digital Library
A Spectral Verification of the HELIOS-2 Lattice Physics Code (open access)

A Spectral Verification of the HELIOS-2 Lattice Physics Code

Core modeling of the Advanced Test Reactor (ATR) at INL is currently undergoing a significant update through the Core Modeling Update Project1. The intent of the project is to bring ATR core modeling in line with today’s standard of computational efficiency and verification and validation practices. The HELIOS-2 lattice physics code2 is the lead code of several reactor physics codes to be dedicated to modernize ATR core analysis. This presentation is concerned with an independent verification of the HELIOS-2 spectral representation including the slowing down and thermalization algorithm and its data dependency. Here, we will describe and demonstrate a recently developed simple cross section generation algorithm based entirely on analytical multigroup parameters for both the slowing down and thermal spectrum. The new capability features fine group detail to assess the flux and multiplication factor dependencies on cross section data sets using the fundamental infinite medium as an example.
Date: November 1, 2012
Creator: Crawford, D. S.; Ganapol, B. D. & Nigg, D. W.
Object Type: Article
System: The UNT Digital Library
Extending MC-SURE to Denoise Sensor Data Streams (open access)

Extending MC-SURE to Denoise Sensor Data Streams

None
Date: November 15, 2012
Creator: Ndoye, M. & Kamath, C.
Object Type: Article
System: The UNT Digital Library
Hydrogen Storage Needs for Early Motive Fuel Cell Markets (open access)

Hydrogen Storage Needs for Early Motive Fuel Cell Markets

The National Renewable Energy Laboratory's (NREL) objective for this project is to identify performance needs for onboard energy storage of early motive fuel cell markets by working with end users, manufacturers, and experts. The performance needs analysis is combined with a hydrogen storage technology gap analysis to provide the U.S. Department of Energy (DOE) Fuel Cell Technologies Program with information about the needs and gaps that can be used to focus research and development activities that are capable of supporting market growth.
Date: November 1, 2012
Creator: Kurtz, J.; Ainscough, C.; Simpson, L. & Caton, M.
Object Type: Report
System: The UNT Digital Library
Life extension program for the modular caustic side solvent extraction unit at Savannah River Site (open access)

Life extension program for the modular caustic side solvent extraction unit at Savannah River Site

Caustic Side Solvent Extraction (CSSX) is currently used at the U.S. Department of Energy (DOE) Savannah River Site (SRS) for removal of cesium from the high-level salt-wastes stored in underground tanks. At SRS, the CSSX process is deployed in the Modular CSSX Unit (MCU). The CSSX technology utilizes a multi-component organic solvent and annular centrifugal contactors to extract cesium from alkaline salt waste. Coalescers and decanters process the Decontaminated Salt Solution (DSS) and Strip Effluent (SE) streams to allow recovery and reuse of the organic solvent and to limit the quantity of solvent transferred to the downstream facilities. MCU is operated in series with the Actinide Removal Process (ARP) which removes strontium and actinides from salt waste utilizing monosodium titanate. ARP and MCU were developed and implemented as interim salt processing until future processing technology, the CSSX-based Salt Waste Processing Facility (SWPF), is operational. SWPF is slated to come on-line in October 2014. The three year design life of the ARP/MCU process, however, was reached in April 2011. Nevertheless, most of the individual process components are capable of operating longer. An evaluation determined ARP/MCU can operate until 2015 before major equipment failure is expected. The three year design life of …
Date: November 14, 2012
Creator: Samadi-Dezfouli, Azadeh
Object Type: Article
System: The UNT Digital Library