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241-SY-101 DACS High hydrogen abort limit reduction (SCR 473) acceptance test report

Description: The capability of the 241-SY-101 Data Acquisition and Control System (DACS) computer system to provide proper control and monitoring of the 241-SY-101 underground storage tank hydrogen monitoring system utilizing the reduced hydrogen abort limit of 0.69% was systematically evaluated by the performance of ATP HNF-4927. This document reports the results of the ATP.
Date: September 9, 1999
Creator: ERMI, A.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced-fueled fusion reactors suitable for direct energy conversion. Fourth quarterly progress report: October 1976--December 1976 and first quarterly progress report: January 1977--March 1977

Description: The direct energy conversion efficiencies calculated for Cat-D and D-/sup 3/He fueled Tokamak reactors are summarized over a range of reactor designs, collector configurations, assumed T/sub e//T/sub i/ ratios, and power densities. The performance of a system of superconducting coils that produce those fields required to guide escaping plasma along the path between the bundle divertor coils and the direct converter is also discussed.
Date: September 9, 1977
Creator: Blum, A. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aircraft-Fuel-Tank Design for Liquid Hydrogen

Description: "Some of the considerations involved in the design of aircraft fuel tanks for liquid hydrogen are discussed herein. Several of the physical properties of metals and thermal insulators in the temperature range from ambient to liquid-hydrogen temperatures are assembled. Calculations based on these properties indicate that it is possible to build a large-size liquid-hydrogen fuel tank which (1) will weigh less then 15 percent of the fuel weight, (2) will have a hydrogen vaporization rate less than… more
Date: August 9, 1955
Creator: Reynolds, T. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ALUMINUM HYDRIDE: A REVERSIBLE MATERIAL FOR HYDROGEN STORAGE

Description: Hydrogen storage is one of the challenges to be overcome for implementing the ever sought hydrogen economy. Here we report a novel cycle to reversibly form high density hydrogen storage materials such as aluminium hydride. Aluminium hydride (AlH{sub 3}, alane) has a hydrogen storage capacity of 10.1 wt% H{sub 2}, 149 kg H{sub 2}/m{sup 3} volumetric density and can be discharged at low temperatures (< 100 C). However, alane has been precluded from use in hydrogen storage systems because of th… more
Date: January 9, 2009
Creator: Zidan, R; Christopher Fewox, C; Brenda Garcia-Diaz, B & Joshua Gray, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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ALUMINUM HYDRIDE: A REVERSIBLE STORAGE MATERIAL FOR HYDROGEN STORAGE

Description: One of the challenges of implementing the hydrogen economy is finding a suitable solid H{sub 2} storage material. Aluminium (alane, AlH{sub 3}) hydride has been examined as a potential hydrogen storage material because of its high weight capacity, low discharge temperature, and volumetric density. Recycling the dehydride material has however precluded AlH{sub 3} from being implemented due to the large pressures required (>10{sup 5} bar H{sub 2} at 25 C) and the thermodynamic expense of chemi… more
Date: January 9, 2009
Creator: Zidan, R; Christopher Fewox, C; Brenda Garcia-Diaz, B & Joshua Gray, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ch. 37, Inertial Fusion Energy Technology

Description: Nuclear fission, nuclear fusion, and renewable energy (including biofuels) are the only energy sources capable of satisfying the Earth's need for power for the next century and beyond without the negative environmental impacts of fossil fuels. Substantially increasing the use of nuclear fission and renewable energy now could help reduce dependency on fossil fuels, but nuclear fusion has the potential of becoming the ultimate base-load energy source. Fusion is an attractive fuel source because i… more
Date: June 9, 2010
Creator: Moses, E.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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Characterization Of The Hydrogenation Products Of Bix (phenylethynyl) Benzene (DEB) Getter Using Combined GC/FTIR/MS, FT-Raman, and ATR Spectroscopies (U)

Description: Organic hydrogen getters are utilized to minimize hydrogen accumulation in sealed systems where such build up could produce either a safety problem from pressure build up or corrosion problem due the hydriding of metals contained in the sealed vessel. DEB (1,4 bis (phenyl ethynyl) benzene) is a hydrogen getter that is based on the palladium catalyzed hydrogenation of triple bonds to single bonds in aromatic aryl compound. DEB is a getter mixed with 25% carbon and 1% Pd and pressed into pellets … more
Date: June 9, 2011
Creator: Smyrl, N. R. & Powell, G. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Chemisorption On Nanoparticles: An Alternative Mechanism For Hydrogen Storage

Description: We present first principles, computational predictions of a porous, nano-structured semiconductor material that will reversibly store hydrogen for fuel cell applications. The material is competitive with current metal hydride storage materials, but contains only carbon and silicon, reducing both its cost and environmental impact. Additionally, unlike metal hydrides, the core skeleton structure of this material is unaltered when cycling from full hydrogen storage to full hydrogen depletion, remo… more
Date: April 9, 2004
Creator: Williamson, A; Reboredo, F & Galli, G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A comparison of reverse osmosis membrane cleaning methods

Description: Testing was conducted at TNX to evaluate the reverse osmosis (RO) cleaning methods in use at the F/H Effluent Treatment Facility (ETF). The present ETF membrane cleaning protocol involves a low-pressure-no-permeation method using NAOH. This work has examined the effectiveness of the present ETF method, due to the lack of improvement following the cleanings sometimes observed. This study has evaluated both low pressure (15--20 psi with no permeation) and high pressure (200 psi with permeation) c… more
Date: January 9, 1992
Creator: Siler, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Conceptual design study FY 1981: synfuels from fusion - using the tandem mirror reactor and a thermochemical cycle to produce hydrogen

Description: This report represents the second year's effort of a scoping and conceptual design study being conducted for the express purpose of evaluating the engineering potential of producing hydrogen by thermochemical cycles using a tandem mirror fusion driver. The hydrogen thus produced may then be used as a feedstock to produce fuels such as methane, methanol, or gasoline. The main objective of this second year's study has been to obtain some approximate cost figures for hydrogen production through a … more
Date: February 9, 1982
Creator: Krikorian, O.H. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cooling water requirements in 212 buildings

Description: This document provides plots of expected rates of heat evolution rates of heat evolution from irradiated metal which may be useful in estimating the cooling water flow required in the the 212 buildings. A comparison of three sources of data found in the Project Handbook is provided. The CN 526 calculations agree very well with the estimates of 16, 32 and 64 days decay periods. CN 526 information was used for calculating the heat evolution rates shown in the following figures, since the data doe… more
Date: November 9, 1944
Creator: Peery, L.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion Behavior of Plasma-Passivated Cu

Description: A new approach is being pursued to study corrosion in Cu alloy systems by using combinatorial analysis combined with microscopic experimentation (the Combinatorial Microlab) to determine mechanisms for copper corrosion in air. Corrosion studies are inherently difficult because of complex interactions between materials and environment, forming a multidimensional phase space of corrosion variables. The Combinatorial Microlab was specifically developed to address the mechanism of Cu sulfidation, w… more
Date: July 9, 1999
Creator: Barbour, J. C.; Braithwaite, J. W.; Son, K.-A.; Sullivan, J. P.; Missert, N, & Sorensen, N. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Degradation of EBR-II driver fuel during wet storage

Description: Characterization data are reported for sodium bonded EBR-II reactor fuel which had been stored underwater in containers since the 1981--1982 timeframe. Ten stainless steel storage containers, which had leaked water during storage due to improper sealing, were retrieved from the ICPP-603 storage basin at the Idaho National Engineering and Environmental Laboratory (INEEL) in Idaho. In the container chosen for detailed destructive analysis, the stainless steel cladding on the uranium alloy fuel ha… more
Date: March 9, 2000
Creator: Pahl, R. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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DEMONSTRATION OF THE NEXT-GENERATION TCAP HYDROGEN ISOTOPE SEPARATION PROCESS

Description: The first generation of TCAP hydrogen isotope separation process has been in service for tritium separation at the Savannah River Site since 1994. To prepare for replacement, a next-generation TCAP process has been developed. This new process simplifies the column design and reduces the equipment requirements of the thermal cycling system. An experimental twelve-meter column was fabricated and installed in the laboratory to demonstrate its performance. This new design and its initial test resul… more
Date: January 9, 2009
Creator: Heung, L; Henry Sessions, H; Steve Xiao, S & Heather Mentzer, H
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Dendrimer Templated Synthesis of One Nanometer Rh and Pt Particles Supported on Mesoporous Silica: Catalytic Activity for Ethylene and Pyrrole Hydrogenation.

Description: Monodisperse rhodium (Rh) and platinum (Pt) nanoparticles as small as {approx}1 nm were synthesized within a fourth generation polyaminoamide (PAMAM) dendrimer, a hyperbranched polymer, in aqueous solution and immobilized by depositing onto a high-surface-area SBA-15 mesoporous support. X-ray photoelectron spectroscopy indicated that the as-synthesized Rh and Pt nanoparticles were mostly oxidized. Catalytic activity of the SBA-15 supported Rh and Pt nanoparticles was studied with ethylene hydro… more
Date: May 9, 2008
Creator: Huang, Wenyu; Kuhn, John N.; Tsung, Chia-Kuang; Zhang, Yawen; Habas, Susan E.; Yang, Peidong et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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DEVELOPMENT AND CHARACTERIZATION OF NOVEL COMPLEX HYDRIDESSYNTHESIZED VIA MOLTEN STATE PROCESSING

Description: This study developed novel hydrides for hydrogen storage through a novel synthesis technique utilizing high hydrogen overpressure at elevated temperatures denoted as Molten State Processing, MSP. The ultimate goal is to produce materials that have high hydrogen capacity, are stable after cycling and possess favorable thermodynamic and kinetic characteristics compatible with onboard hydrogen storage for automotive applications. In order to achieve these goals the MSP Process was developed and us… more
Date: January 9, 2006
Creator: Zidan, R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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DIFFUSION OF H THROUGH PD MEMBRANES EFFECTS OF NON-IDEALITY ON DH AND ED

Description: H diffusion constants, D{sub H}, have been obtained from steady-state fluxes across Pd membranes with the downstream side maintained at p{sub H2} {approx} 0. Good linearity of plots of H flux versus (1/d), where d is the thickness, attests to the H permeation being bulk diffusion controlled in this temperature (423 to 523K) and p{sub H2} range ({le} 0.2 MPa). D{sub H} values have been determined at constant p{sub up} and also at constant (H/Pd)=r conditions. H fluxes through Pd membranes with t… more
Date: March 9, 2007
Creator: Shanahan, K
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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DPB progress report: Hydrogen uptake capacity for a particular sample of DPB

Description: The authors have performed hydrogen uptake to measure the remaining capacity for two DPB pellet samples. The measurements were made with a Cahn microbalance operating at room temperature. The DPB samples were placed inside a quartz boat and the microbalance was then evacuated to a base pressure of 10{sup -4} Torr overnight. This overnight pumping removed volatile contaminants from the DPB pellets prior to the introduction of 600 Torr of N{sub 2} into the microbalance chamber. Next, a leak valve… more
Date: November 9, 2004
Creator: Dinh, L. N.; Schildbach, M. A.; Maxwell, R. S.; Balazs, B. & McLean, W., II
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Droplet phase characteristics in liquid-dominated steam--water nozzle flow

Description: An experimental study was undertaken to determine the droplet size distribution, the droplet spatial distribution and the mean droplet velocity in low-quality, steam-water flow from a rectangular cross-section, converging-diverging nozzle. A unique forward light scattering technique was developed for droplet size distribution measurements. Droplet spatial variations were investigated using light transmission measurements, and droplet velocities were measured with a laser-Doppler velocimeter (LD… more
Date: August 9, 1978
Creator: Alger, T.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrochemical hydrogen Storage Systems

Description: As the global need for energy increases, scientists and engineers have found a possible solution by using hydrogen to power our world. Although hydrogen can be combusted as a fuel, it is considered an energy carrier for use in fuel cells wherein it is consumed (oxidized) without the production of greenhouse gases and produces electrical energy with high efficiency. Chemical storage of hydrogen involves release of hydrogen in a controlled manner from materials in which the hydrogen is covalently… more
Date: August 9, 2010
Creator: Macdonald, Dr. Digby
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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