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22,567 Matching Results
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Ground Source Integrated Heat Pump (GS-IHP) Development
Between October 2008 and May 2013 ORNL and ClimateMaster, Inc. (CM) engaged in a Cooperative Research and Development Agreement (CRADA) to develop a groundsource integrated heat pump (GS-IHP) system for the US residential market. A initial prototype was designed and fabricated, lab-tested, and modeled in TRNSYS (SOLAR Energy Laboratory, et al, 2010) to predict annual performance relative to 1) a baseline suite of equipment meeting minimum efficiency standards in effect in 2006 (combination of air-source heat pump (ASHP) and resistance water heater) and 2) a state-of-the-art (SOA) two-capacity ground-source heat pump with desuperheater water heater (WH) option (GSHPwDS). Predicted total annual energy savings, while providing space conditioning and water heating for a 2600 ft{sup 2} (242 m{sup 2}) house at 5 U.S. locations, ranged from 52 to 59%, averaging 55%, relative to the minimum efficiency suite. Predicted energy use for water heating was reduced 68 to 78% relative to resistance WH. Predicted total annual savings for the GSHPwDS relative to the same baseline averaged 22.6% with water heating energy use reduced by 10 to 30% from desuperheater contributions. The 1st generation (or alpha) prototype design for the GS-IHP was finalized in 2010 and field test samples were fabricated for testing …
Date:
May 24, 2013
Creator:
Baxter, V. D.; Rice, K.; Murphy, R.; Munk, J.; Ally, Moonis; Shen, Bo et al.
Object Type:
Report
System:
The UNT Digital Library
Hydrodynamic and shock heating instabilities of liquid metal strippers for RIA
Stripping of accelerated ions is a key problem for the design of RIA to obtain high efficiency. Thin liquid Lithium film flow is currently considered as stripper for RIA ion beams to obtain higher Z for following acceleration: in extreme case of Uranium from Z=29 to Z=60-70 (first stripper) and from Z=70 till full stripping Z=92 (second stripper). Ionization of ion occurs due to the interaction of the ion with electrons of target material (Lithium) with the loss of parts of the energy due to ionization, Q{sub U}, which is also accompanied with ionization energy losses, Q{sub Li} of the lithium. The resulting heat is so high that can be removed not by heat conduction but mainly by convection, i.e., flowing of liquid metal across beam spot area. The interaction of the beam with the liquid metal generates shock wave propagating along direction perpendicular to the beam as well as excites oscillations along beam direction. We studied the dynamics of these excited waves to determine conditions for film stability at the required velocities for heat removal. It will allow optimizing jet nozzle shapes and flow parameters to prevent film fragmentation and to ensure stable device operation.
Date:
May 24, 2013
Creator:
Hassanein, Ahmed
Object Type:
Report
System:
The UNT Digital Library
Information Filters for Safeguards Applications: A Scoping Study
N/A
Date:
May 24, 2013
Creator:
K., Bachner; D., Verdugo & Verdugo,D
Object Type:
Report
System:
The UNT Digital Library
Observation of Time Reversal Violation in the B0 Meson System
None
Date:
May 24, 2013
Creator:
Lees, J. P.; Poireau, V.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E. et al.
Object Type:
Article
System:
The UNT Digital Library
Optics Tuning and Compensation in LCLS-II
None
Date:
May 24, 2013
Creator:
Nosochkov, Y.; Raubenheimer, T. & Woodley, M.
Object Type:
Article
System:
The UNT Digital Library
Optimization of Triplet Quadrupoles Field Quality for the LHC High Luminosity Lattice at Collision Energy
None
Date:
May 24, 2013
Creator:
Nosochkov, Y.; Cai, Y.; Wang, M. H.; Fartoukh, S.; Giovannozzi, M.; De Maria, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Physiochemical Evidence of Faulting Processes and Modeling of Fluid in Evolving Fault Systems in Southern California
Our study targets recent (Plio-Pleistocene) faults and young (Tertiary) petroleum fields in southern California. Faults include the Refugio Fault in the Transverse Ranges, the Ellwood Fault in the Santa Barbara Channel, and most recently the Newport- Inglewood in the Los Angeles Basin. Subsurface core and tubing scale samples, outcrop samples, well logs, reservoir properties, pore pressures, fluid compositions, and published structural-seismic sections have been used to characterize the tectonic/diagenetic history of the faults. As part of the effort to understand the diagenetic processes within these fault zones, we have studied analogous processes of rapid carbonate precipitation (scaling) in petroleum reservoir tubing and manmade tunnels. From this, we have identified geochemical signatures in carbonate that characterize rapid CO2 degassing. These data provide constraints for finite element models that predict fluid pressures, multiphase flow patterns, rates and patterns of deformation, subsurface temperatures and heat flow, and geochemistry associated with large fault systems.
Date:
May 24, 2013
Creator:
Boles, James
Object Type:
Report
System:
The UNT Digital Library
Risks from Past, Current, and Potential Hanford Single Shell Tank Leaks
Due to significant delays in constructing and operating the Waste Treatment Plant, which is needed to support retrieval of waste from Hanford’s single shell tanks (SSTs), SSTs may now be required to store tank waste for two to three more decades into the future. Many SSTs were built almost 70 years ago, and all SSTs are well beyond their design lives. Recent examination of monitoring data suggests several of the tanks, which underwent interim stabilization a decade or more ago, may be leaking small amounts (perhaps 150–300 gallons per year) to the subsurface environment. A potential leak from tank T-111 is estimated to have released approximately 2,000 gallons into the subsurface. Observations of past leak events, recently published simulation results, and new simulations all suggest that recent leaks are unlikely to affect underlying groundwater above regulatory limits. However, these recent observations remind us that much larger source terms are still contained in the tanks and are also present in the vadose zone from historical intentional and unintentional releases. Recently there have been significant improvements in methods for detecting and characterizing soil moisture and contaminant releases, understanding and controlling mass-flux, and remediating deep vadose zone and groundwater plumes. To ensure extended …
Date:
May 24, 2013
Creator:
Triplett, Mark B.; Watson, David J. & Wellman, Dawn M.
Object Type:
Report
System:
The UNT Digital Library
On High Order Finite-Difference Metric Discretizations Satisfying GCL on Moving and Deforming Grids
None
Date:
May 23, 2013
Creator:
Sjogreen, B.; Yee, H. C. & Vinokur, M.
Object Type:
Report
System:
The UNT Digital Library
Studies of Exclusive Charmless Semileptonic B Decays and Extraction of |V(Ub)| at BaBar
None
Date:
May 23, 2013
Creator:
Taras, Paul & U., /Montreal
Object Type:
Article
System:
The UNT Digital Library
Charmless B Decays at BaBar and Belle
None
Date:
May 22, 2013
Creator:
Sitt, Simon & Polytechnique, /Ecole
Object Type:
Article
System:
The UNT Digital Library
Demonstration of Cascaded Optical Inverse Free-Electron Laser Accelerator
None
Date:
May 22, 2013
Creator:
Dunning, M.; Hemsing, E.; Hast, C.; Raubenheimer, T. O.; Weathersby, S.; Xiang, D. et al.
Object Type:
Article
System:
The UNT Digital Library
Environmental Impacts of Wind Power Development on the Population Biology of Greater Prairie-Chickens
Executive Summary 1. We investigated the impacts of wind power development on the demography, movements, and population genetics of Greater Prairie-Chickens (Tympanuchus cupido) at three sites in northcentral and eastern Kansas for a 7-year period. Only 1 of 3 sites was developed for wind power, the 201MW Meridan Way Wind Power Facility at the Smoky Hills site in northcentral Kansas. Our project report is based on population data for prairie chickens collected during a 2-year preconstruction period (2007-2008), a 3-year postconstruction period (2009-2011) and one final year of lek surveys (2012). Where relevant, we present preconstruction data from our field studies at reference sites in the northern Flint Hills (2007-2009) and southern Flint Hills (2006-2008). 2. We addressed seven potential impacts of wind power development on prairie chickens: lek attendance, mating behavior, use of breeding habitat, fecundity rates, natal dispersal, survival rates, and population numbers. Our analyses of pre- and postconstruction impacts are based on an analysis of covariance design where we modeled population performance as a function of treatment period, distance to eventual or actual site of the nearest wind turbine, and the interaction of these factors. Our demographic and movement data from the 6-year study period at the …
Date:
May 22, 2013
Creator:
Sandercock, Brett K.
Object Type:
Report
System:
The UNT Digital Library
Modeling Electro-Magnetic Fields from HE Explosions
None
Date:
May 22, 2013
Creator:
Kuhl, A L
Object Type:
Report
System:
The UNT Digital Library
Observation of direct CP violation in the measurement of the Cabibbo-Kobayashi-Maskawa angle gamma with B+- to D(*)K(*)+- decays
None
Date:
May 22, 2013
Creator:
Lees, J. P.; Poireau, V.; Tisserand, V.; /Annecy, LAPP; Grauges, E.; /Barcelona U., ECM et al.
Object Type:
Article
System:
The UNT Digital Library
RAPID DETERMINATION OF {sup 210} PO IN WATER SAMPLES
A new rapid method for the determination of {sup 210}Po in water samples has been developed at the Savannah River National Laboratory (SRNL) that can be used for emergency response or routine water analyses. If a radiological dispersive device (RDD) event or a radiological attack associated with drinking water supplies occurs, there will be an urgent need for rapid analyses of water samples, including drinking water, ground water and other water effluents. Current analytical methods for the assay of {sup 210}Po in water samples have typically involved spontaneous auto-deposition of {sup 210}Po onto silver or other metal disks followed by counting by alpha spectrometry. The auto-deposition times range from 90 minutes to 24 hours or more, at times with yields that may be less than desirable. If sample interferences are present, decreased yields and degraded alpha spectrums can occur due to unpredictable thickening in the deposited layer. Separation methods have focused on the use of Sr Resin�, often in combination with 210Pb analysis. A new rapid method for {sup 210}Po in water samples has been developed at the Savannah River National Laboratory (SRNL) that utilizes a rapid calcium phosphate co-precipitation method, separation using DGA Resin� (N,N,N�,N� tetraoctyldiglycolamide extractant-coated resin, Eichrom …
Date:
May 22, 2013
Creator:
Maxwell, S.
Object Type:
Article
System:
The UNT Digital Library
ALCF I/O Data Repository
This report talks about the ALCF I/O Data Repository.
Date:
May 21, 2013
Creator:
Carns, P. H.
Object Type:
Report
System:
The UNT Digital Library
Building 419 Closure Report - May 2013
None
Date:
May 21, 2013
Creator:
Abri, M.
Object Type:
Report
System:
The UNT Digital Library
CP Violation in Belle/BaBar Part-2
None
Date:
May 21, 2013
Creator:
Yusa, Yosuke & Tech., /Virginia
Object Type:
Article
System:
The UNT Digital Library
EFFECT OF TRANSPORTING SALTSTONE SAMPLES PRIOR TO SET
The Saltstone Sampling and Analyses Plan provides a basis for the quantity (and configuration) of saltstone grout samples required for conducting a study directed towards correlation of the Performance Assessment (PA) related properties of field-emplaced samples and samples processed and cured in the laboratory. The testing described in the saltstone sampling and analyses plan will be addressed in phases. The initial testing (Phase I) includes collecting samples from the process room in the Saltstone Production Facility (SPF) and transporting them to Savannah River National Laboratory (SRNL) where they will cure under a temperature profile that mimics the temperature in the Saltstone Disposal Unit (SDU) and then be analyzed. SRNL has previously recommended that after the samples of fresh (uncured) saltstone are obtained from the SPF process room, they are allowed to set prior to transporting them to SRNL for curing. The concern was that if the samples are transported before they are set, the vibrations during transport may cause artificial delay of structure development which could result in preferential settling or segregation of the saltstone slurry. However, the results of this testing showed there was no clear distinction between the densities of the cylinder sections for any of the transportation …
Date:
May 21, 2013
Creator:
Reigel, M.
Object Type:
Report
System:
The UNT Digital Library
Science Archives at SLAC National Accelerator Laboratory
None
Date:
May 21, 2013
Creator:
Deken, Jean Marie
Object Type:
Article
System:
The UNT Digital Library
Search for Pair Production of First Or Second Generation Leptoquarks in Proton-Proton Collisions at sqrt(s)=7 TeV using the ATLAS detector at the LHC
None
Date:
May 21, 2013
Creator:
Aad, Georges
Object Type:
Article
System:
The UNT Digital Library
User-Specified and Automatic Data Layout Selection for Portable Performance
None
Date:
May 21, 2013
Creator:
Sharma, K; Karlin, I; Keasler, J; McGraw, J & Sarkar, V
Object Type:
Report
System:
The UNT Digital Library
Advances in Hydrogeochemical Indicators for the Discovery of New Geothermal Resources in the Great Basin, USA
This report summarizes the results of Phase I work for a go/no go decision on Phase II funding. In the first objective, we assessed the extent to which fluid-mineral equilibria controlled deep water compositions in geothermal systems across the Great Basin. Six systems were evaluated: Beowawe; Desert Peak; Dixie Valley; Mammoth; Raft River; Roosevelt. These represent a geographic spread of geothermal resources, in different geological settings and with a wide range of fluid compositions. The results were used for calibration/reformulation of chemical geothermometers that reflect the reservoir temperatures in producing reservoirs. In the second objective, we developed a reactive -transport model of the Desert Peak hydrothermal system to evaluate the processes that affect reservoir fluid geochemistry and its effect on solute geothermometry. This included testing geothermometry on “reacted” thermal water originating from different lithologies and from near-surface locations where the temperature is known from the simulation. The integrated multi-component geothermometer (GeoT, relying on computed mineral saturation indices) was tested against the model results and also on the systems studied in the first objective.
Date:
May 20, 2013
Creator:
Simmons, Stuart F.; Spycher, Nicolas; Sonnenthal, Eric & Dobson, Patrick
Object Type:
Report
System:
The UNT Digital Library