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2D Thermal Hydraulic Analysis and Benchmark in Support of HFIR LEU Conversion using COMSOL

Description: The research documented herein was funded by a research contract between the Research Reactors Division (RRD) of Oak Ridge National Laboratory (ORNL) and the University of Tennessee, Knoxville (UTK) Mechanical, Aerospace and Biomedical Engineering Department (MABE). The research was governed by a statement of work (SOW) which clearly defines nine specific tasks. This report is outlined to follow and document the results of each of these nine specific tasks. The primary goal of this phase of the… more
Date: September 1, 2010
Creator: Freels, James D; Bodey, Isaac T; Lowe, Kirk T & Arimilli, Rao V
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Campbell Creek TVA 2010 First Year Performance Report July 1, 2009 August 31, 2010

Description: This research project was initiated by TVA in March 2008 and encompasses three houses that are of similar size, design and located within the same community - Campbell Creek, Farragut TN with simulated occupancy. This report covers the performance period from July 1, 2009 to August 31, 2010. It is the intent of TVA that this Valley Data will inform electric utilities future residential retrofit incentive program.
Date: October 1, 2010
Creator: Christian, Jeffrey E; Gehl, Anthony C; Boudreaux, Philip R & New, Joshua Ryan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Computational techniques used in the development of coprocessing flowsheets [SEPHIS]

Description: The computer program SEPHIS, developed to aid in determining optimum solvent extraction conditions for the reprocessing of nuclear power reactor fuels by the Purex method, is described. The program employs a combination of approximate mathematical equilibrium expressions and a transient, stagewise-process calculational method to allow stage and product-stream concentrations to be predicted with accuracy and reliability. The possible applications to inventory control for nuclear material safegua… more
Date: May 1, 1979
Creator: Groenier, W. S.; Mitchell, A. D. & Jubin, R. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of a Venturi Type Bubble Generator for Use in the Molten-Salt Reactor Xenon Removal System

Description: A venturi type bubble generator was developed for application in the xenon removal system proposed for a molten-salt breeder reactor. Gas injected into the high velocity liquid at the venturi throat is fromed into bubbles by the fluid turbulence in the diffuser cone. Tests were conducted using aqueous solutions to determine the various pressure drops of the bubble generator as a function of liquid and gas flow rates and to determine the bubble diameter produced. Empirical relationships were dev… more
Date: December 31, 1972
Creator: Gabbard, C. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Effects of Infrared-Blocking Pigments and Deck Venting on Stone-Coated Metal Residential Roofs

Description: Field data show that stone-coated metal shakes and S-mission tile, which exploit the use of infraredblocking color pigments (IrBCPs), along with underside venting reduce the heat flow penetrating the conditioned space of a residence by 70% compared with the amount of heat flow penetrating roofs with conventional asphalt shingles. Stone-coated metal roof products are typically placed on battens and counter-battens and nailed through the battens to the roof deck. The design provides venting on th… more
Date: January 1, 2006
Creator: Miller, William A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Establishing Specifications for Low Enriched Uranium Fuel Operations Conducted Outside the High Flux Isotope Reactor Site

Description: The National Nuclear Security Administration (NNSA) has funded staff at Oak Ridge National Laboratory (ORNL) to study the conversion of the High Flux Isotope Reactor (HFIR) from the current, high enriched uranium fuel to low enriched uranium fuel. The LEU fuel form is a metal alloy that has never been used in HFIR or any HFIR-like reactor. This report provides documentation of a process for the creation of a fuel specification that will meet all applicable regulations and guidelines to which UT… more
Date: October 1, 2010
Creator: Pinkston, Daniel; Primm, Trent; Renfro, David G & Sease, John D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of Aqua-Ammonia Chiller Technologies and Field Site Installation

Description: The Naval Facilities Engineering Service Center (NFESC) has sponsored Oak Ridge National Laboratory (ORNL) to review, select, and evaluate advanced, gas-fired, 5-ton, aqua-ammonia, chiller technologies. The selection criteria was that units have COP values of 0.67 or better at Air-conditioning and Refrigeration Institute (ARI) 95 F outdoor rating conditions, an active refrigerant flow control, and a variable-speed condenser fan. These features are expected to allow these units to operate at hig… more
Date: September 1, 2007
Creator: Zaltash, Abdolreza
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fast reactor fuel reprocessing development in the United States: an overview

Description: As a result of the reduced nuclear power demand and the growing concerns over the potential proliferation of sensitive nuclear materials, there has not been a necessity to make immediate decisions regarding near-term reprocessing and breeder reactor commercialization. Programs which formed the basic thrust of nuclear development in the early 1970's have already been adjusted: increased emphasis on problems of radioactive waste management; increased attention to nonproliferation objectives … more
Date: May 1, 1979
Creator: Groenier, W. S. & Burch, W. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Fate of Electrons with Energies Less Than 100 eV

Description: An introduction is given to some of the major processes which take place when low energy electrons collide with molecules. Temporary negative ion states, dissociative electron attachment, and vibrational and rotational excitation are emphasized. Resonances and some comments on H{sub 2}O are also covered. 45 refs.
Date: May 1, 1979
Creator: Stockdale, J. A. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Final CRADA Report ORNL-00-0609, Real-Time Control of Diesel Combustion Quality

Description: Detroit Diesel Corporation (DDC) and ORNL established this CRADA to improve heavy-duty engine efficiency with reduced emissions at relatively extreme operating regimes such has high EGR, low-load, and cold-start, with an emphasis on the application of advanced control strategies. The approach used in this collaborative effort was to include the application of novel analysis and modeling techniques developed from the application of nonlinear dynamics and chaos theory. More specifically, analytic… more
Date: July 1, 2010
Creator: Wagner, Robert M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

FY2010 Oak Ridge National Laboratory Annual Progress Report for the Power Electronics and Electric Machinery Program

Description: The U.S. Department of Energy (DOE) and the U.S. Council for Automotive Research (composed of automakers Ford, General Motors, and Chrysler) announced in January 2002 a new cooperative research effort. Known as FreedomCAR (derived from ''Freedom'' and ''Cooperative Automotive Research''), it represents DOE's commitment to developing public-private partnerships to fund high risk, high payoff research into advanced automotive technologies. Efficient fuel cell technology, which uses hydrogen to po… more
Date: October 1, 2010
Creator: Olszewski, Mitchell
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High Performance Computing Facility Operational Assessment, FY 2010 Oak Ridge Leadership Computing Facility

Description: Oak Ridge National Laboratory's (ORNL's) Cray XT5 supercomputer, Jaguar, kicked off the era of petascale scientific computing in 2008 with applications that sustained more than a thousand trillion floating point calculations per second - or 1 petaflop. Jaguar continues to grow even more powerful as it helps researchers broaden the boundaries of knowledge in virtually every domain of computational science, including weather and climate, nuclear energy, geosciences, combustion, bioenergy, fusion,… more
Date: August 1, 2010
Creator: Bland, Arthur S Buddy; Hack, James J; Baker, Ann E; Barker, Ashley D; Boudwin, Kathlyn J.; Kendall, Ricky A et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Innovative Technique for Evaluating the Integrity and Durability of Wind Turbine Blade Composites

Description: Wind turbine blades are subjected to complex multiaxial stress states during operation. A review of the literature suggests that mixed mode fracture toughness can be significantly less than that of the tensile opening mode (Mode I), implying that fracture failure can occur at a much lower load capacity if the structure is subject to mixed-mode loading. Thus, it will be necessary to identify the mechanisms that might lead to failure in blade materials under mixed-mode loading conditions. Meanwhi… more
Date: September 1, 2010
Creator: Wang, Jy-An John & Ren, Fei
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Lessons Learned From Developing Reactor Pressure Vessel Steel Embrittlement Database

Description: Materials behaviors caused by neutron irradiation under fission and/or fusion environments can be little understood without practical examination. Easily accessible material information system with large material database using effective computers is necessary for design of nuclear materials and analyses or simulations of the phenomena. The developed Embrittlement Data Base (EDB) at ORNL is this comprehensive collection of data. EDB database contains power reactor pressure vessel surveillance d… more
Date: August 1, 2010
Creator: Wang, Jy-An John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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