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Enhanced durability and reactivity for zinc ferrite desulfurization sorbent

Description: AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-… more
Date: November 14, 1988
Creator: Jha, Mahesh C. & Berggren, Mark H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of mild gasification process

Description: Under a previous contract with Morgantown Energy Technology Center (METC), Department of Energy (DOE) Contract No. AC21-84MC21108, UCC Research Corporation (UCCRC) built and tested a 1500 lb/day Mild Gasification Process Development Unit (MGU). The MGU, as tested under the previous contract, is shown in Figure 1. Testing completed under the previous contract showed that good quality hydrocarbon liquids and good quality char can be produced in the MGU. However, the MGU is not optimized. The prim… more
Date: November 1, 1987
Creator: Chu, C.I.C. & Gillespie, B.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Improving the performance of brine wells at Gulf Coast strategic petroleum reserve sites

Description: At the request of the Department of Energy, field techniques were developed to evaluate and improve the injection of brine into wells at Strategic Petroleum Reserve (SPR) sites. These wells are necessary for the disposal of saturated brine removed from salt domes where oil is being stored. The wells, which were accepting brine at 50 percent or less of their initial design rates, were impaired by saturated brine containing particulates that deposited on the sand face and in the geologic formatio… more
Date: November 5, 1979
Creator: Owen, L.B. & Quong, R. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cadmium sulfide/copper sulfide heterojunction cell research. Quarterly technical progress report, June 1-September 30, 1979

Description: Off-stoiciometry CdS coatings with resistivities of about 10..cap omega..-cm have been deposited by a cyclic reactive sputtering process where the H/sub 2/S injection is periodically switched on and off. Cells with CdS layer fabricated in this way have yielded efficiencies of about 0.6% with short circuit currents of about 3.5 mA/cm/sup 2/, open circuit voltages of about 0.43V, and fill factors of about 0.40. CdS resistivity control by In doping has been achieved both by diffusion from a pre-de… more
Date: November 30, 1979
Creator: Thornton, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Monte Carlo optimization of depth-of-interaction resolution in PET crystals

Description: The light distribution along one edge of a PET scintillation crystal was investigated with a Monte Carlo simulation. This position-dependent light can be used to measure the 511 keV photon interaction position in the crystal on an event by event basis, thus reducing radial elongation. The expected full width at half maximum (FWHM) of the light distribution on the 3 {times} 30 mm{sup 2} surface of a 3 {times} 10 {times} 30 mm{sup 3} bismuth germanate (BGO) crystal surrounded by a diffuse reflect… more
Date: November 1, 1991
Creator: DeVol, T. A. (Michigan Univ., Ann Arbor, MI (United States). Dept. of Nuclear Engineering); Moses, W. W. & Derenzo, S. E. (Lawrence Berkeley Lab., CA (United States))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Survey of spectral response measurements for photovoltaic devices

Description: A survey of the photovoltaic community was conducted to ascertain the present state-of-the-art for PV spectral response measurements. Specific topics explored included measurement system designs, good and bad features of the systems, and problems encountered in the evaluation of specific cell structures and materials. The survey showed that most spectral response data are used in diagnostic analysis for the optimization of developmental solar cells. Measurement systems commonly utilize a choppe… more
Date: November 1, 1981
Creator: Hartman, J.S. & Lind, M.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ocean Thermal Energy Conversion: An overview

Description: Ocean thermal energy conversion, or OTEC is a technology that extracts power from the ocean's natural thermal gradient. This technology is being pursued by researchers from many nations; in the United States, OTEC research is funded by the US Department of Energy's Ocean Energy Technology program. The program's goal is to develop the technology so that industry can make a competent assessment of its potential -- either as an alternative or as a supplement to conventional energy sources. Federal… more
Date: November 1, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Numerical Modeling of Fluidized-Bed Combustor

Description: Optimum design of fluidized-bed combustor requires high carbon burn-up, good sulfur retention, minimized sorbent (Ca) utilization, efficient feed distribution and mechanical layout. These parameters are strongly affected by the dynamics of the fluidized bed. The dynamic behavior of fluidized combustor is formulated in terms of multidomain - multiphase mechanics. Fluidization, bubble mechanics, coal combustion, sorbent sulfation, oxidation, solids movement and elutriation, and heat transfer are … more
Date: November 1977
Creator: Sha, W. T. & Soo, S. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Field reversed mirror reactor

Description: The parametric analysis and preliminary conceptual design for a multicell field reversed mirror reactor (FRM) are described.
Date: November 15, 1977
Creator: Carlson, G. A.; Condit, W. C.; Devoto, R. S. & Neef, W. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Potential impacts of artificial intelligence expert systems on geothermal well drilling costs:

Description: The Geothermal research Program of the US Department of Energy (DOE) has as one of its goals to reduce the cost of drilling geothermal wells by 25 percent. To attain this goal, DOE continuously evaluates new technologies to determine their potential in contributing to the Program. One such technology is artifical intelligence (AI), a branch of computer science that, in recent years, has begun to impact the marketplace in a number of fields. Expert systems techniques can (and in some cases, alre… more
Date: November 24, 1987
Creator: Satrape, J.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermoeconomic design optimization of a KRW-based IGCC power plant

Description: This report discussed the cost and efficiency optimization of an integrated gasification-combined-cycle (IGCC) power plant design and the effects of important design options and parameters. Advanced thermoeconomic techniques were used to evaluate and optimize a given IGCC concept which uses Illinois No. 6 bituminous coal, air-blown KRW coal gasifiers, a hot gas cleanup system, and GE MS7001F gas turbines. Three optimal design concepts are presented and discussed in the report. Two of the concep… more
Date: November 1, 1991
Creator: Tsatsaronis, G.; Lin, L.; Pisa, J. & Tawfik, T. (Tennessee Technological Univ., Cookeville, TN (United States). Center for Electric Power)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimization of radially heterogeneous 1000-MW(e) LMFBR core configurations. Appendixes A and B. Research project 620-25

Description: A parameter study was conducted to determine the interrelated effects of: loosely or tightly coupled fuel regions separated by internal blanket assemblies, number of fuel regions, core height, number and arrangement of internal blanket subassemblies, number and size of fuel pins in a subassembly, etc. The effects of these parameters on sodium void reactivity, Doppler, incoherence, breeding gain, and thermohydraulics were of prime interest. Trends were established and ground work laid for optimi… more
Date: November 1, 1979
Creator: Barthold, W. P.; Orechwa, Y.; Su, S. F.; Hutter, E.; Batch, R. V.; Beitel, J. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Engineering development of selective agglomeration: Task 7, Evaluation of bench-scale and component tests

Description: This report presents the Task 7 findings of the project entitled Engineering Development of Selective Agglomeration'' to develop selective agglomeration technology to a commercially acceptable level by 1992. The objectives of this report are to summarize the work completed as a part of Task 7, which includes engineering analysis of process deficiencies, analysis of all project test results, and evaluation and selection of an agglomeration process for further development in Phase II. Other objec… more
Date: November 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimization of radially heterogenous 1000-MW(e) LMFBR core configurations. Appendix C. Research project 620-25

Description: A parameter study was conducted to determine the interrelated effects of: loosely or tightly coupled fuel regions separated by internal blanket assemblies, number of fuel regions, core height, number and arrangement of internal blanket subassemblies, number and size of fuel pins in a subassembly, etc. The effects of these parameters on sodium void reactivity, Doppler, incoherence, breeding gain, and thermohydraulics were of prime interest. Trends were established and ground work laid for optimi… more
Date: November 1, 1979
Creator: Barthold, W. P.; Orechwa, Y.; Su, S. F.; Hutter, E.; Batch, R. V.; Beitel, J. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimization of radially heterogeneous 1000-MW(e) LMFBR core configurations. Design and performance of reference cores. Research project 620-25

Description: A parameter study was conducted to determine the interrelated effects of: loosely of tightly coupled fuel regions separated by internal blanket assemblies, number of fuel regions, core height, number and arrangement of internal blanket subassemblies, number and size of fuel pins in a subassembly, etc. The effects of these parameters on sodium void reactivity, Doppler, incoherence, breeding gain, and thermohydraulics were of prime interest. Trends were established and ground work laid for optimi… more
Date: November 1, 1979
Creator: Barthold, W. P.; Orechwa, Y.; Su, S. F.; Hutter, E.; Batch, R. V.; Beitel, J. C. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of the HTGR-gas turbine on national reactor strategies

Description: A specific role for the HTGR in a national energy strategy is examined. The issue is addressed in two ways. First, the role of the HTGR-GT Binary cycle plant is examined in a national energy strategy based on symbiosis between fast breeder and advanced converter reactors utilizing the thorium U233 fuel cycle. Second, the advantages of the HTGR-GT dry-cooled plant operating in arid regions is examined and compared with a dry-cooled LWR. An event tree analysis of potential benefits is applied.
Date: November 1, 1979
Creator: Ligon, D.M. & Brogli, R.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optimized Flow Sheet for a Reference Commercial-Scale Nuclear-Driven High-Temperature Electrolysis Hydrogen Production Plant

Description: This report presents results from the development and optimization of a reference commercialscale high-temperature electrolysis (HTE) plant for hydrogen production. The reference plant design is driven by a high-temperature helium-cooled reactor coupled to a direct Brayton power cycle. The reference design reactor power is 600 MWt, with a primary system pressure of 7.0 MPa, and reactor inlet and outlet fluid temperatures of 540° C and 900°C, respectively. The electrolysis unit used to produce h… more
Date: November 1, 2007
Creator: McKellar, M. G.; O'Brien, J. E.; Harvego, E. A. & Herring, J. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Communication Requirements and Interconnect Optimization forHigh-End Scientific Applications

Description: The path towards realizing peta-scale computing isincreasingly dependent on building supercomputers with unprecedentednumbers of processors. To prevent the interconnect from dominating theoverall cost of these ultra-scale systems, there is a critical need forhigh-performance network solutions whose costs scale linearly with systemsize. This work makes several unique contributions towards attaining thatgoal. First, we conduct one of the broadest studies to date of high-endapplication communicati… more
Date: November 12, 2007
Creator: Kamil, Shoaib; Oliker, Leonid; Pinar, Ali & Shalf, John
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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An Optimization and Assessment on DG adoption in JapanesePrototype Buildings

Description: This research investigates a method of choosing economicallyoptimal DER, expanding on prior studies at the Berkeley Lab using the DERdesign optimization program, the Distributed Energy Resources CustomerAdoption Model (DER-CAM). DER-CAM finds the optimal combination ofinstalled equipment from available DER technologies, given prevailingutility tariffs, site electrical and thermal loads, and a menu ofavailable equipment. It provides a global optimization, albeit idealized,that shows how the site… more
Date: November 30, 2005
Creator: Zhou, Nan; Marnay, Chris; Firestone, Ryan; Gao, Weijun & Nishida,Masaru
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Use of Helical Fields to Allow a Long Pulse Reversed Field Pinch

Description: The maintenance of the magnetic configuration of a Reversed Field Pinch (RFP) is an unsolved problem. Even a toroidal loop voltage does not suffice to maintain the magnetic configuration in axisymmetry but could if the plasma had helical shaping. The theoretical tools for plasma optimization using helical shaping have advanced, so an RFP could be relatively easily designed for optimal performance with a spatially constant toroidal loop voltage. A demonstration that interesting solutions exist i… more
Date: November 20, 2008
Creator: Boozer, A. & Pomphrey, N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Performance of a New Composite Single-Crystal Filtered Thermal Neutron Beam for Neutron Capture Therapy Research at the University of Missouri

Description: The University of Missouri (MU) Institute for Nano and Molecular Medicine, the Idaho National Laboratory (INL) and the University of Missouri Research Reactor (MURR) have undertaken a new collaborative research initiative to further the development of improved boron delivery agents for BNCT. The first step of this effort has involved the design and construction of a new thermal neutron beam irradiation facility for cell and small-animal radiobological research at the MURR. In this paper we pres… more
Date: November 1, 2008
Creator: Brockman, John D.; Nigg, David W.; Hawthorne, M. Frederick & McKibben, Charles
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Multi-Attribute Seismic/Rock Physics Approach to Characterizing Fractured Reservoirs

Description: Most current seismic methods to seismically characterize fractures in tight reservoirs depend on a few anisotropic wave propagation signatures that can arise from aligned fractures. While seismic anisotropy can be a powerful fracture diagnostic, a number of situations can lessen its usefulness or introduce interpretation ambiguities. Fortunately, laboratory and theoretical work in rock physics indicates that a much broader spectrum of fracture seismic signatures can occur, including a decrease … more
Date: November 30, 2004
Creator: Mavko, Gary
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dynamical tests on fiber optic data taken from the riser section of a circulating fluidized bed

Description: Dynamical tests have been applied to fiber optic data taken from a cold-flow circulating fluidized bed to characterize flow conditions, identify three time and/or length scales (macro, meso, and micro), and understand the contribution these scales have on the raw data. The characteristic variable analyzed is the raw voltage signal obtained from a fiber-optic probe taken at various axial and radial positions under different loading conditions so that different flow regimes could be attained. The… more
Date: November 1, 2007
Creator: Taylor, E. M.; Guenther, C. P. & Breault, R. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High-Temperature High-Power Packaging Techniques for HEV Traction Applications

Description: A key issue associated with the wider adoption of hybrid-electric vehicles (HEV) and plug in hybrid-electric vehicles (PHEV) is the implementation of the power electronic systems that are required in these products [1]. To date, many consumers find the adoption of these technologies problematic based on a financial analysis of the initial cost versus the savings available from reduced fuel consumption. Therefore, one of the primary industry goals is the reduction in the price of these vehicles … more
Date: November 30, 2006
Creator: Barlow, F.D. & Elshabini, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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