Bonded Bracket Assmebly for Frameless Solar Panels (open access)

Bonded Bracket Assmebly for Frameless Solar Panels

In February 2011 the US Department of Energy announced their new Sunshot Initiative. The Sunshot goal is to reduce the total cost of solar energy systems by about 75 percent before the end of the decade. The DOE estimated that a total installed cost of $1 per watt for photovoltaic systems would be equivalent to 6¢/kilowatt hour (kWh) for energy available from the grid. The DOE also estimated that to meet the $1 per watt goal, PV module costs would need to be reduced to $.50 per watt, balance of systems costs would need to be reduced to $.40 per watt, and power electronic costs would need to reach $.10 per watt. To address the BOS balance of systems cost component of the $1 per watt goal, the DOE announced a funding opportunity called (BOS-X) Extreme Balance of System Hardware Cost Reductions. The DOE identified eight areas within the total BOS costs: 1) installation labor, 2) installation materials, 3) installation overhead and profit, 4) tracker, 5) permitting and commissioning, 6) site preparation, 7) land acquisition, 8) sales tax. The BOS-X funding announcement requested applications in four specific topics: Topic 1: Transformational Building Integrated Photovoltaic (BIPV) Modules Topic 2: Roof and …
Date: January 30, 2013
Creator: Murray, Todd
Object Type: Report
System: The UNT Digital Library
A geomechanical mechanism that counteracts flow channeling induced by reservoir thermal drawdown (open access)

A geomechanical mechanism that counteracts flow channeling induced by reservoir thermal drawdown

None
Date: January 30, 2013
Creator: Fu, P; Hao, Y & Carrigan, C R
Object Type: Article
System: The UNT Digital Library
Manufacturing Industrial Development for the Alternative Energy Systems-Final Report (open access)

Manufacturing Industrial Development for the Alternative Energy Systems-Final Report

NCMS identified and developed critical manufacturing technology assessments vital to the affordable manufacturing of alternative-energy systems. NCMS leveraged technologies from other industrial sectors and worked with our extensive member organizations to provide DOE with two projects with far-reaching impact on the generation of wind energy. In the response for a call for project ideas, 26 project teams submitted ideas. Following a detailed selection criteria, two projects were chosen for development: Advanced Manufacturing for Modular Electro-kinetic (E-K) Wind Energy Conversion Technology - The goal of this project was to demonstrate that a modular wind energy technology based on electrohydrodynamic wind energy principles and employing automotive heritage high volume manufacturing techniques and modular platform design concepts can result in significant cost reductions for wind energy systems at a range of sizes from 100KW to multi-MW. During this program, the Accio/Boeing team made major progress on validating the EHD wind energy technology as commercially viable in the wind energy sector, and moved along the manufacturing readiness axis with a series of design changes that increased net system output. Hybrid Laser Arc Welding for Manufacture of Wind Towers - The goal of this research program was to reduce the cost of manufacturing wind towers …
Date: January 30, 2013
Creator: Dr. Chuck Ryan, National Center for Manufacturing Sciences; Dr. Dawn White, Accio Energy & Mr. Duncan Pratt, General Electric Global Research
Object Type: Report
System: The UNT Digital Library
Annual Waste Minimization Summary Report, Calendar Year 2010, U.S. Environmental Protection Agency Identification No. NV3890090001 (open access)

Annual Waste Minimization Summary Report, Calendar Year 2010, U.S. Environmental Protection Agency Identification No. NV3890090001

This report summarizes the waste minimization efforts undertaken by National Security TechnoIogies, LLC, for the U. S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO), during calendar year 2010. The NNSA/NSO Pollution Prevention Program establishes a process to reduce the volume and toxicity of waste generated by NNSA/NSO activities and ensures that proposed methods of treatment, storage, and/or disposal of waste minimize potential threats to human health and the environment.
Date: January 30, 2011
Creator: Haworth, D.M.
Object Type: Report
System: The UNT Digital Library
1.5D Quasilinear Model for Alpha Particle-TAE Interaction in ARIES ACT-I (open access)

1.5D Quasilinear Model for Alpha Particle-TAE Interaction in ARIES ACT-I

We study the TAE interaction with alpha particle fusion products in ARIES ACT-I using the 1.5D quasilinear model. 1.5D uses linear analytic expressions for growth and damping rates of TAE modes evaluated using TRANSP pro les to calculates the relaxation of pressure pro les. NOVA- K simulations are conducted to validate the analytic dependancies of the rates, and to normalize their absolute value. The low dimensionality of the model permits calculating loss diagrams in large parameter spaces.
Date: January 30, 2013
Creator: Ghantous, K.; Gorelenkov, N. N.; Kessel, C. & Poli, F.
Object Type: Report
System: The UNT Digital Library
SOIL DESICCATION TECHNIQUES STRATEGIES FOR IMMOBILIZATION OF DEEP VADOSE CONTAMINANTS AT THE HANFORD CENTRAL PLATEAU (open access)

SOIL DESICCATION TECHNIQUES STRATEGIES FOR IMMOBILIZATION OF DEEP VADOSE CONTAMINANTS AT THE HANFORD CENTRAL PLATEAU

Deep vadose zone contamination poses some of the most difficult remediation challenges for the protection of groundwater at the Hanford Site where processes and technologies are being developed and tested for use in the on-going effort to remediate mobile contamination in the deep vadose zone, the area deep beneath the surface. Historically, contaminants were discharged to the soil along with significant amounts of water, which continues to drive contaminants deeper in the vadose zone toward groundwater. Soil desiccation is a potential in situ remedial technology well suited for the arid conditions and the thick vadose zone at the Hanford Site. Desiccation techniques could reduce the advance of contaminants by removing the pore water to slow the rate of contaminants movement toward groundwater. Desiccation technologies have the potential to halt or slow the advance of contaminants in unsaturated systems, as well as aid in reduction of contaminants from these same areas. Besides reducing the water flux, desiccation also establishes capillary breaks that would require extensive rewetting to resume pore water transport. More importantly, these techniques have widespread application, whether the need is to isolate radio nuclides or address chemical contaminant issues. Three different desiccation techniques are currently being studied at Hanford.
Date: January 30, 2012
Creator: MW, BENECKE; GB, CHRONISTER & MJ, TRUEX
Object Type: Article
System: The UNT Digital Library
Precision Photometry to Study the Nature of Dark Energy (open access)

Precision Photometry to Study the Nature of Dark Energy

Over the past decade scientists have collected convincing evidence that the expansion of the universe is accelerating, leading to the conclusion that the content of our universe is dominated by a mysterious 'dark energy'. The fact that present theory cannot account for the dark energy has made the determination of the nature of dark energy central to the field of high energy physics. It is expected that nothing short of a revolution in our understanding of the fundamental laws of physics is required to fully understand the accelerating universe. Discovering the nature of dark energy is a very difficult task, and requires experiments that employ a combination of different observational techniques, such as type-Ia supernovae, gravitational weak lensing surveys, galaxy and galaxy cluster surveys, and baryon acoustic oscillations. A critical component of any approach to understanding the nature of dark energy is precision photometry. This report addresses just that. Most dark energy missions will require photometric calibration over a wide range of intensities using standardized stars and internal reference sources. All of the techniques proposed for these missions rely on a complete understanding of the linearity of the detectors. The technical report focuses on the investigation and characterization of 'reciprocity …
Date: January 30, 2011
Creator: Lorenzon, Wolfgang & Schubnell, Michael
Object Type: Report
System: The UNT Digital Library
DEVELOPMENT AND DEPLOYMENT OF THE MOBILE ARM RETRIEVAL SYSTEM (MARS) - 12187 (open access)

DEVELOPMENT AND DEPLOYMENT OF THE MOBILE ARM RETRIEVAL SYSTEM (MARS) - 12187

Washington River Protection Solutions (WRPS) is developing and deploying Mobile Arm Retrieval System (MARS) technologies solutions to support retrieval of radioactive and chemical waste from underground single shell storage tanks (SST) located at the Hanford Site, which is near Richland, Washington. WRPS has developed the MARS using a standardized platform that is capable of deploying multiple retrieval technologies. To date, WRPS, working with their mentor-protege company, Columbia Energy and Environmental Services (CEES), has developed two retrieval mechanisms, MARS-Sluicing (MARS-S) and MARS-Vacuum (MARS-V). MARS-S uses pressurized fluids routed through spray nozzles to mobilize waste materials to a centrally located slurry pump (deployed in 2011). MARS-V uses pressurized fluids routed through an eductor nozzle. The eductor nozzle allows a vacuum to be drawn on the waste materials. The vacuum allows the waste materials to be moved to an in-tank vessel, then extracted from the SST and subsequently pumped to newer and safer double shell tanks (DST) for storage until the waste is treated for disposal. The MARS-S system is targeted for sound SSTs (i.e., non leaking tanks). The MARS-V is targeted for assumed leaking tanks or those tanks that are of questionable integrity. Both versions of MARS are being/have been developed in …
Date: January 30, 2012
Creator: CA, BURKE; MR, LANDON & CE, HANSON
Object Type: Article
System: The UNT Digital Library
Zonal Flow as Pattern Formation: Merging Jets and the Ultimate Jet Length Scale (open access)

Zonal Flow as Pattern Formation: Merging Jets and the Ultimate Jet Length Scale

Zonal flows are well known to arise spontaneously out of turbulence. It is shown that for statisti- cally averaged equations of quasigeostrophic turbulence on a beta plane, zonal flows and inhomoge- neous turbulence fit into the framework of pattern formation. There are many implications. First, the zonal flow wavelength is not unique. Indeed, in an idealized, infinite system, any wavelength within a certain continuous band corresponds to a solution. Second, of these wavelengths, only those within a smaller subband are linearly stable. Unstable wavelengths must evolve to reach a stable wavelength; this process manifests as merging jets.
Date: January 30, 2013
Creator: Krommes, Jeffrey B. Parker and John A.
Object Type: Report
System: The UNT Digital Library
A Procedure for Determination of Degradation Acceptance Criteria for Structures and Passive Components in Nuclear Power Plants (open access)

A Procedure for Determination of Degradation Acceptance Criteria for Structures and Passive Components in Nuclear Power Plants

The Korea Atomic Energy Research Institute (KAERI) has been collaborating with Brookhaven National Laboratory since 2007 to develop a realistic seismic risk evaluation system which includes the consideration of aging of structures and components in nuclear power plants (NPPs). This collaboration program aims at providing technical support to a five-year KAERI research project, which includes three specific areas that are essential to seismic probabilistic risk assessment: (1) probabilistic seismic hazard analysis, (2) seismic fragility analysis including the effects of aging, and (3) a plant seismic risk analysis. The understanding and assessment of age-related degradations of structures, systems, and components and their impact on plant safety is the major goal of this KAERI-BNL collaboration. Four annual reports have been published before this report as a result of the collaboration research.
Date: January 30, 2012
Creator: Nie, J.; Braverman, J.; Hofmayer, C.; Choun, Y-S.; Hahm, D. & Choi, I-K.
Object Type: Report
System: The UNT Digital Library
Development of a Chemistry-Based, Predictive Method for Determining the Amount of Non-Pertechnetate Technetium in the Hanford Tanks: FY 2012 Progress Report (open access)

Development of a Chemistry-Based, Predictive Method for Determining the Amount of Non-Pertechnetate Technetium in the Hanford Tanks: FY 2012 Progress Report

This report describes investigations directed toward understanding the extent of the presence of highly alkaline soluble, non-pertechnetate technetium (n-Tc) in the Hanford Tank supernatants. The goals of this report are to: a) present a review of the available literature relevant to the speciation of technetium in the Hanford tank supernatants, b) attempt to establish a chemically logical correlation between available Hanford tank measurements and the presence of supernatant soluble n-Tc, c) use existing measurement data to estimate the amount of n-Tc in the Hanford tank supernatants, and d) report on any likely, process-friendly methods to eventually sequester soluble n-Tc from Hanford tank supernatants.
Date: January 30, 2013
Creator: Rapko, Brian M.; Bryan, Samuel A.; Bryant, Janet L.; Chatterjee, Sayandev; Edwards, Matthew K.; Houchin, Joy Y. et al.
Object Type: Report
System: The UNT Digital Library
Modeling and Generating New Flexure Constraint Elements (open access)

Modeling and Generating New Flexure Constraint Elements

None
Date: January 30, 2012
Creator: Hopkins, J B
Object Type: Article
System: The UNT Digital Library
WPA Omnibus Award MT Wind Power Outreach (open access)

WPA Omnibus Award MT Wind Power Outreach

The objective of this grant was to further the development of Montana’s vast wind resources for small, medium, and large scale benefits to Montana and the nation. This was accomplished through collaborative work with wind industry representatives, state and local governments, the agricultural community, and interested citizens. Through these efforts MT Dept Environmental Quality (DEQ) was able to identify development barriers, educate and inform citizens, as well as to participate in regional and national dialogue that will spur the development of wind resources. The scope of DEQ’s wind outreach effort evolved over the course of this agreement from the development of the Montana Wind Working Group and traditional outreach efforts, to the current focus on working with the state’s university system to deliver a workforce trained to enter the wind industry.
Date: January 30, 2012
Creator: Brian Spangler, Manager Energy Planning and Renewables
Object Type: Text
System: The UNT Digital Library
Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Underground Nuclear Tests - 2011, Part 2 (open access)

Evaluation of Cavity Collapse and Surface Crater Formation for Selected Lawrence Livermore National Laboratory Underground Nuclear Tests - 2011, Part 2

This report evaluates collapse evolution for selected Lawrence Livermore National Laboratory (LLNL) underground nuclear tests at the Nevada National Security Site (NNSS, formerly called the Nevada Test Site). The work is being done to support several different programs that desire access to the ground surface above expended underground nuclear tests. The programs include: the Borehole Management Program, the Environmental Restoration Program, and the National Center for Nuclear Security Gas-Migration Experiment. Safety decisions must be made before a crater area, or potential crater area, can be reentered for any work. Evaluation of cavity collapse and crater formation is input into the safety decisions. Subject matter experts from the LLNL Containment Program who participated in weapons testing activities perform these evaluations. Information used included drilling and hole construction, emplacement and stemming, timing and sequence of the selected test and nearby tests, geology, yield, depth of burial, collapse times, surface crater sizes, cavity and crater volume estimations, ground motion, and radiological release information. Both classified and unclassified data were reviewed. The evaluations do not include the effects of erosion that may modify the collapse craters over time. They also do not address possible radiation dangers that may be present. Various amounts of information …
Date: January 30, 2012
Creator: Pawloski, G. A.
Object Type: Report
System: The UNT Digital Library
Solid Phase Characterization of Tank 241-AY-102 Annulus Space Particulate (open access)

Solid Phase Characterization of Tank 241-AY-102 Annulus Space Particulate

The Special Analytical Studies Group at the 222-S Laboratory (222-S) examined the particulate recovered from a series of samples from the annular space of tank 241-AY-102 (AY-102) using solid phase characterization (SPC) methods. These include scanning electron microscopy (SEM) using the ASPEX�1 scanning electron microscope, X-ray diffraction (XRD) using the Rigaku�2 MiniFlex X-ray diffractometer, and polarized light microscopy (PLM) using the Nikon�3 Eclipse Pol optical microscope. The SEM is equipped with an energy dispersive X-ray spectrometer (EDS) to provide chemical information.
Date: January 30, 2013
Creator: Cooke, G. A.
Object Type: Report
System: The UNT Digital Library
Oxy-Combustion Boiler Material Development (open access)

Oxy-Combustion Boiler Material Development

Under U.S. Department of Energy Cooperative Agreement No. DE-NT0005262 Foster Wheeler North America Corp conducted a laboratory test program to determine the effect of oxy-combustion on boiler tube corrosion. In this program, CFD modeling was used to predict the gas compositions that will exist throughout and along the walls of air-fired and oxy-fired boilers operating with low to high sulfur coals. Test coupons of boiler tube materials were coated with deposits representative of those coals and exposed to the CFD predicted flue gases for up to 1000 hours. The tests were conducted in electric tube furnaces using oxy-combustion and air-fired flue gases synthesized from pressurized cylinders. Following exposure, the test coupons were evaluated to determine the total metal wastage experienced under air and oxy-combustions conditions and materials recommendations were made. Similar to air-fired operation, oxy-combustion corrosion rates were found to vary with the boiler material, test temperature, deposit composition, and gas composition. Despite this, comparison of air-fired and oxy-fired corrosion rates showed that oxy-firing rates were, for the most part, similar to, if not lower than those of air-firing; this finding applied to the seven furnace waterwall materials (wrought and weld overlay) and the ten superheater/reheater materials (wrought and weld …
Date: January 30, 2012
Creator: Gagliano, Michael; Seltzer, Andrew; Agarwal, Hans; Robertson, Archie & Wang, Lun
Object Type: Report
System: The UNT Digital Library
Study of CO2 Absorption and Negative Ion Formation during Direct Ionization of CO2 with a Cs+ Beam (open access)

Study of CO2 Absorption and Negative Ion Formation during Direct Ionization of CO2 with a Cs+ Beam

None
Date: January 30, 2012
Creator: Salazar, G & Ognibene, T
Object Type: Article
System: The UNT Digital Library
Review of Potential Candidate Stabilization Technologies for Liquid and Solid Secondary Waste Streams (open access)

Review of Potential Candidate Stabilization Technologies for Liquid and Solid Secondary Waste Streams

Pacific Northwest National Laboratory has initiated a waste form testing program to support the long-term durability evaluation of a waste form for secondary wastes generated from the treatment and immobilization of Hanford radioactive tank wastes. The purpose of the work discussed in this report is to identify candidate stabilization technologies and getters that have the potential to successfully treat the secondary waste stream liquid effluent, mainly from off-gas scrubbers and spent solids, produced by the Hanford Tank Waste Treatment and Immobilization Plant (WTP). Down-selection to the most promising stabilization processes/waste forms is needed to support the design of a solidification treatment unit (STU) to be added to the Effluent Treatment Facility (ETF). To support key decision processes, an initial screening of the secondary liquid waste forms must be completed by February 2010.
Date: January 30, 2010
Creator: Pierce, Eric M.; Mattigod, Shas V.; Westsik, Joseph H.; Serne, R. Jeffrey; Icenhower, Jonathan P.; Scheele, Randall D. et al.
Object Type: Report
System: The UNT Digital Library
Negative-mass Instability in Nonlinear Plasma Waves (open access)

Negative-mass Instability in Nonlinear Plasma Waves

The negative-mass instability (NMI), previously found in ion traps, appears as a distinct regime of the sideband instability in nonlinear plasma waves with trapped particles. As the bounce frequency of these particles decreases with the bounce action, bunching can occur if the action distribution is inverted in trapping islands. In contrast to existing theories that also infer instabilities from the anharmonicity of bounce oscillations, spatial periodicity of the islands turns out to be unimportant, and the particle distribution can be unstable even if it is at at the resonance. An analytical model is proposed which describes both single traps and periodic nonlinear waves and concisely generalizes the conventional description of the sideband instability in plasma waves. The theoretical results are supported by particle-in-cell simulations carried out for a regime accentuating the NMI effect.
Date: January 30, 2013
Creator: Dodin, I. Y.; Schmit, P. F.; Rocks, J. & Fisch, N. J.
Object Type: Report
System: The UNT Digital Library
Kinetics of the Gelation of Colloidal Silica at Geothermal Conditions, and Implications for Reservoir Modification and Management (open access)

Kinetics of the Gelation of Colloidal Silica at Geothermal Conditions, and Implications for Reservoir Modification and Management

None
Date: January 30, 2013
Creator: Hunt, J D; Ezzedine, S M; Bourcier, W & Roberts, S
Object Type: Article
System: The UNT Digital Library
ADVANCES IN HEXAVALENT CHROMIUM REMOVAL AT HANFORD (open access)

ADVANCES IN HEXAVALENT CHROMIUM REMOVAL AT HANFORD

At the Hanford Site, chromium was used as a corrosion inhibitor in the reactor cooling water and was introduced into the groundwater as a result of planned and unplanned discharges from reactors during plutonium production since 1944. Beginning in 1995, groundwater treatment methods were evaluated leading to the use of pump and treat facilities with ion exchange using Dowex 21 K, a regenerable strong base anion exchange resin. This required regeneration of the resin, which is currently performed offsite. Resin was installed in a 4 vessel train, with resin removal required from the lead vessel approximately once a month. In 2007, there were 8 trains (32 vessels) in operation. In 2008, DOE recognized that regulatory agreements would require significant expansion in the groundwater chromium treatment capacity. Previous experience from one of the DOE project managers led to identification of a possible alternative resin, and the contractor was requested to evaluate alternative resins for both cost and programmatic risk reductions. Testing was performed onsite in 2009 and 2010, using a variety of potential resins in two separate facilities with groundwater from specific remediation sites to demonstrate resin performance in the specific groundwater chemistry at each site. The testing demonstrated that a …
Date: January 30, 2012
Creator: Neshem, D. O. & Riddelle, J.
Object Type: Article
System: The UNT Digital Library
Solar Thermal Demonstration Project (open access)

Solar Thermal Demonstration Project

HVAC Retrofit and Energy Efficiency Upgrades at Clark High School, Las Vegas, Nevada The overall objectives of this project are to increase usage of alternative/renewable fuels, create a better and more reliable learning environment for the students, and reduce energy costs. Utilizing the grant resources and local bond revenues, the District proposes to reduce electricity consumption by installing within the existing limited space, one principal energy efficient 100 ton adsorption chiller working in concert with two 500 ton electric chillers. The main heating source will be primarily from low nitrogen oxide (NOX), high efficiency natural gas fired boilers. With the use of this type of chiller, the electric power and cost requirements will be greatly reduced. To provide cooling to the information technology centers and equipment rooms of the school during off-peak hours, the District will install water source heat pumps. In another measure to reduce the cooling requirements at Clark High School, the District will replace single pane glass and metal panels with ‘Kalwall’ building panels. An added feature of the “Kalwall” system is that it will allow for natural day lighting in the student center. This system will significantly reduce thermal heat/cooling loss and control solar heat gain, …
Date: January 30, 2012
Creator: Biesinger, K.; Cuppett, D. & Dyer, D.
Object Type: Report
System: The UNT Digital Library
Comparison of the National Green Building Standard (ICC 700-2008) and LEED for Homes to the Residential Provisions of the 2009 IECC for the Delaware Green for Green Program (open access)

Comparison of the National Green Building Standard (ICC 700-2008) and LEED for Homes to the Residential Provisions of the 2009 IECC for the Delaware Green for Green Program

Adhering to Delaware’s Green for Green program specifications results in homes being built to more energy-efficient levels than the 2009 IECC levels. Specifically: • Certifying at the Silver Performance Level for the ICC 700 standard using either the Prescriptive or Performance Paths will result in a residential building that is more efficient than if the building only complied with the 2009 IECC. • Certifying at the Silver level under LEED for Homes standard, including mandatory compliance with ENERGY STAR 2006 and earning two additional energy points will result in a residential building that is more efficient than if the building only complied with the 2009 IECC.
Date: January 30, 2011
Creator: Britt, Michelle L. & Makela, Eric J.
Object Type: Report
System: The UNT Digital Library
The Successful Utilization of Commercial Treatment Capabilities to Disposition Hanford's No-Path-Forward, Suspect Transuranic Wastes (open access)

The Successful Utilization of Commercial Treatment Capabilities to Disposition Hanford's No-Path-Forward, Suspect Transuranic Wastes

The U.S. Department of Energy (DOE) Richland Operations Office (RL) has adopted the 2015 Vision for Cleanup of the Hanford Site. The CH2M HILL Plateau Remediation Company's (CHPRC) Waste and Fuels Management Project (W&FMP) and their partners support this mission by providing centralized waste management services for the Hanford Site waste generating organizations. At the time of the CHPRC contract award (August 2008) slightly more than 9,000 cubic meters (m{sup 3}) of legacy waste was defined as ''no-path-forward waste.'' A significant portion of this waste (7,650 m{sup 3}) comprised wastes with up to 50 grams of special nuclear materials (SNM) in oversized packages recovered during retrieval operations and large glove boxes removed from Hanford's Plutonium Finishing Plant (PFP). Through a collaborative effort between the DOE, CHPRC, and Perma-Fix Environmental Services, Inc. (PESI), pathways for these problematic wastes were developed and are currently being implemented.
Date: January 30, 2012
Creator: Blackford, L. T.; Catlow, R. L.; West, L. D.; Collins, M. S.; Romine, L. D. & Moak, D. J.
Object Type: Article
System: The UNT Digital Library