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Advanced alternate planar geometry solid oxide fuel cells
The following Ceramatec tasks are reported: electrolyte development and fabrication, edge seal development/fabrication, electrode, and interconnector. The following IGT tasks are reported: cell design analysis, and program liaison and test facility preparation.
Date:
January 1, 1988
Creator:
Prouse, D.; Elangovan, S.; Khandkar, A. (Ceramatec, Inc., Salt Lake City, UT (United States)); Donelson, R. & Marianowski, L. (Institute of Gas Technology, Chicago, IL (United States))
Object Type:
Report
System:
The UNT Digital Library
Advanced alternate planar geometry solid oxide fuel cells. Third interim quarterly technical progress report, July 1, 1988--September 30, 1988
The following Ceramatec tasks are reported: electrolyte development and fabrication, edge seal development/fabrication, electrode, and interconnector. The following IGT tasks are reported: cell design analysis, and program liaison and test facility preparation.
Date:
December 31, 1988
Creator:
Prouse, D.; Elangovan, S.; Khandkar, A.; Donelson, R. & Marianowski, L.
Object Type:
Report
System:
The UNT Digital Library
Advanced concepts in accelerator timing control
The control system for the Booster accelerator presently under construction at BNL includes a timing section with serial high speed coded data distribution, computer based encoders for both real time and field driven clocks and a method of easily tracking the performance and reliability of these timing streams. We have developed a simple method for the generation of timing which operates to produce pulses which may be repeated as desired with minimal latency.
Date:
January 1, 1988
Creator:
Frankel, R. & Salwen, C.
Object Type:
Article
System:
The UNT Digital Library
Advanced energy design and operation technologies research: Recommendations for a US Department of Energy multiyear program plan
This document describes recommendations for a multiyear plan developed for the US Department of Energy (DOE) as part of the Advanced Energy Design and Operation Technologies (AEDOT) project. The plan is an outgrowth of earlier planning activities conducted for DOE as part of design process research under the Building System Integration Program (BSIP). The proposed research will produce intelligent computer-based design and operation technologies for commercial buildings. In this document, the concept is explained, the need for these new computer-based environments is discussed, the benefits are described, and a plan for developing the AEDOT technologies is presented for the 9-year period beginning FY 1989. 45 refs., 37 figs., 9 tabs.
Date:
December 1, 1988
Creator:
Brambley, M. R.; Crawley, D. B.; Hostetler, D. D.; Stratton, R. C.; Addison, M. S.; Deringer, J. J. et al.
Object Type:
Report
System:
The UNT Digital Library
Advanced fusion MHD power conversion using the CFAR (compact fusion advanced Rankine) cycle concept
The CFAR (compact fusion advanced Rankine) cycle concept for a tokamak reactor involves the use of a high-temperature Rankine cycle in combination with microwave superheaters and nonequilibrium MHD disk generators to obtain a compact, low-capital-cost power conversion system which fits almost entirely within the reactor vault. The significant savings in the balance-of-plant costs are expected to result in much lower costs of electricity than previous concepts. This paper describes the unique features of the CFAR cycle and a high- temperature blanket designed to take advantage of it as well as the predicted performance of the MHD disk generators using mercury seeded with cesium. 40 refs., 8 figs., 3 tabs.
Date:
October 1, 1988
Creator:
Hoffman, M. A.; Campbell, R.; Logan, B. G. (California Univ., Davis, CA (USA) & Lawrence Livermore National Lab., CA (USA))
Object Type:
Article
System:
The UNT Digital Library
Advanced geothermal technologies
Research and development in advanced technologies for geothermal energy production continue to increase the energy production options for the Nation. The high-risk investment over the past few years by the US Department of Energy in geopressured, hot dry rock, and magma energy resources is producing new means to lower production costs and to take advantage of these resources. The Nation has far larger and more regionally extensive geothermal resources than heretofore realized. At the end of a short 30-day closed-loop flow test, the manmade hot dry rock reservoir at Fenton Hill, New Mexico, was producing 10 MW thermal - and still climbing - proving the technical feasibility of this new technology. The scientific feasibility of magma energy extraction has been demonstrated, and new field tests to evaluate this technology are planned. Analysis and field tests confirm the viability of geopressured-geothermal energy and the prospect that many dry-hole or depleted petroleum wells can be turned into producing geopressured-geothermal wells. Technological advances achieved through hot dry rock, magma, geopressured, and other geothermal research are making these resources and conventional hydrothermal resources more competitive. Noteworthy among these technological advances are techniques in computer simulation of geothermal reservoirs, new means for well stimulation, new …
Date:
January 1, 1988
Creator:
Whetten, J. T.; Murphy, H. D.; Hanold, R. J.; Myers, C. W. & Dunn, J. C.
Object Type:
Article
System:
The UNT Digital Library
The Advanced Light Source at Lawrence Berkeley Laboratory
The Advanced Light Source is a national user facility for the production of high brightness and partially coherent X-ray and ultraviolet synchrotron radiation, which is now under construction at Lawrence Berkeley Laboratory. The facility is based on a low emittance electron storage ring, photon beamlines and user support facilities. The lattice optics is optimized for undulator operation and can accommodate up to 11 insertion devices in the straight sections and up to 48 ports in the bending magnets. The nominal electron energy is 1.5 GeV, the horizontal emittance 10/sup -8/ m rad, the circulating current 400 mA in the multibunch mode of operation. The parameters are chosen to cover the photon spectrum from about 5 eV to 1 keV with undulators and up to 10 keV with wigglers. The choice of energy is dictated by the need to cover the above photon energy range with an undulator gap not smaller than 1.4 cm. The facility is now in its second year of construction and is planned to be completed in late 1992 at a total cost of $98.7 million. 4 refs., 8 figs., 1 tab.
Date:
August 1, 1988
Creator:
Cornacchia, M.
Object Type:
Article
System:
The UNT Digital Library
Advanced Materials by Design
This assessment responds to a joint request from the House Committee on Science, Space, and Technology and the Senate Committee on Commerce, Science, and Transportation to analyze the military and commercial opportunities presented by new structural materials technologies, and to outline the Federal policy objectives that are consistent with those opportunities.
Date:
June 1988
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
Advanced materials for solid oxide fuel cells: Hafnium-Praseodymium-Indium Oxide System
The HfO/sub 2/-PrO/sub 1.83/-In/sub 2/O/sub 3/ system has been studied at the Pacific Northwest Laboratory to develop alternative, highly electrically conducting oxides as electrode and interconnection materials for solid oxide fuel cells. A coprecipitation process was developed for synthesizing single-phase, mixed oxide powders necessary to fabricate powders and dense oxides. A ternary phase diagram was developed, and the phases and structures were related to electrical transport properties. Two new phases, an orthorhombic PrInO/sub 3/ and a rhombohedral Hf/sub 2/In/sub 2/O/sub 7/ phase, were identified. The highest electronic conductivity is related to the presence of a bcc, In/sub 2/O/sub 3/ solid solution (ss) containing HfO/sub 2/ and PrO/sub 1.83/. Compositions containing more than 35 mol % of the In/sub 2/O/sub 3/ ss have electrical conductivities greater than 10/sup /minus/1/ (ohm-cm)/sup /minus/1/, and the two or three phase structures that contain this phase appear to exhibit mixed electronic-ionic conduction. The high electrical conductivities and structures similar to the Y/sub 2/O/sub 3/-stabilized ZrO/sub 2/(HfO/sub 2/) electrolyte give these oxides potential for use as cathodes in solid oxide fuel cells. 21 refs.
Date:
June 1, 1988
Creator:
Bates, J. L.; Griffin, C. W. & Weber, W. J.
Object Type:
Report
System:
The UNT Digital Library
Advanced methods comparisons of reaction rates in the Purdue Fast Breeder Blanket Facility
A review of worldwide results revealed that reaction rates in the blanket region are generally underpredicted with the discrepancy increasing with penetration; however, these results vary widely. Experiments in the large uniform Purdue Fast Breeder Blanket Facility (FBBF) blanket yield an accurate quantification of this discrepancy. Using standard production code methods (diffusion theory with 50 group cross sections), a consistent Calculated/Experimental (C/E) drop-off was observed for various reaction rates. A 50% increase in the calculated results at the outer edge of the blanket is necessary for agreement with experiments. The usefulness of refined group constant generation utilizing specialized weighting spectra and transport theory methods in correcting this discrepancy was analyzed. Refined group constants reduce the discrepancy to half that observed using the standard method. The surprising result was that transport methods had no effect on the blanket deviations; thus, transport theory considerations do not constitute or even contribute to an explanation of the blanket discrepancies. The residual blanket C/E drop-off (about half the standard drop-off) using advanced methods must be caused by some approximations which are applied in all current methods. 27 refs., 3 figs., 1 tab.
Date:
January 1, 1988
Creator:
Hill, R.N. & Ott, K.O.
Object Type:
Article
System:
The UNT Digital Library
Advanced phase change materials and systems for solar passive heating and cooling of residential buildings
During the last three years under the sponsorship of the DOE Solar Passive Division, the University of Dayton Research Institute (UDRI) has investigated four phase change material (PCM) systems for utility in thermal energy storage for solar passive heating and cooling applications. From this research on the basis of cost, performance, containment, and environmental acceptability, we have selected as our current and most promising series of candidate phase change materials, C-15 to C-24 linear crystalline alkyl hydrocarbons. The major part of the research during this contract period was directed toward the following three objectives. Find, test, and develop low-cost effective phase change materials (PCM) that melt and freeze sharply in the comfort temperature range of 73--77{degree}F for use in solar passive heating and cooling of buildings. Define practical materials and processes for fire retarding plasterboard/PCM building products. Develop cost-effective methods for incorporating PCM into building construction materials (concrete, plasterboard, etc.) which will lead to the commercial manufacture and sale of PCM-containing products resulting in significant energy conservation.
Date:
January 1, 1988
Creator:
Salyer, I. O.; Sircar, A. K. & Dantiki, S.
Object Type:
Report
System:
The UNT Digital Library
Advanced Thermoplastic Materials for District Heating Piping Systems
The work described in this report represents research conducted in the first year of a three-year program to assess, characterize, and design thermoplastic piping for use in elevated-temperature district heating (DH) systems. The present report describes the results of a program to assess the potential usefulness of advanced thermoplastics as piping materials for use in DH systems.
Date:
April 1988
Creator:
Raske, D. T. & Karvelas, D. E.
Object Type:
Report
System:
The UNT Digital Library
Advanced Vortexing Combustor (VC) for space/water heating applications (proof-of-concept model development)
The Naval Civil Engineering Laboratory is developing a proof-of-concept Vortexing Combustor (VC) with 2--4 MMBtu/hr firing capacity to bum both coal-water fuel and ultrafine coal for boiler applications. Thermodynamic analysis was made to trade off design features of the combustor. Results indicated that for best thermal efficiency, consistent with the low temperature combustion requirements, a sub-adiabatic VC arrangement should be selected. In order to minimize the risk of uncertainties, a three-step approach was chosen by which two small size models (0.15 and 0.6 MMBtu/hr) will be designed, built, and tested. The full-scale, proof-of-concept model will then be designed based on the results of tests using the small-scale models. Extensive testing of the full-scale model will be conducted to prove the concept. All combustors will be designed based on the use of one type of coal-water fuel. Ultrafine coal will be tested and regarded as a variance. The design and construction of the 0.15 MMBtu/hr model has been completed and it is being assembled for exploratory testing of the VC concept. Several major pieces of equipment, purchased with NCEL funds as a part of the cost sharing effort have arrived. The overall project has been progressing well and is on schedule. …
Date:
March 1, 1988
Creator:
Fu, T.T.
Object Type:
Report
System:
The UNT Digital Library
Advanced Vortexing Combustor (VC) for space/water heating applications (proof-of-concept model development). Technical progress report No. 1
The Naval Civil Engineering Laboratory is developing a proof-of-concept Vortexing Combustor (VC) with 2--4 MMBtu/hr firing capacity to bum both coal-water fuel and ultrafine coal for boiler applications. Thermodynamic analysis was made to trade off design features of the combustor. Results indicated that for best thermal efficiency, consistent with the low temperature combustion requirements, a sub-adiabatic VC arrangement should be selected. In order to minimize the risk of uncertainties, a three-step approach was chosen by which two small size models (0.15 and 0.6 MMBtu/hr) will be designed, built, and tested. The full-scale, proof-of-concept model will then be designed based on the results of tests using the small-scale models. Extensive testing of the full-scale model will be conducted to prove the concept. All combustors will be designed based on the use of one type of coal-water fuel. Ultrafine coal will be tested and regarded as a variance. The design and construction of the 0.15 MMBtu/hr model has been completed and it is being assembled for exploratory testing of the VC concept. Several major pieces of equipment, purchased with NCEL funds as a part of the cost sharing effort have arrived. The overall project has been progressing well and is on schedule. …
Date:
March 1, 1988
Creator:
Fu, T. T.
Object Type:
Report
System:
The UNT Digital Library
Advanced Water-Cooled Phosphoric Acid Fuel Cell Development, Quarterly Report: July - September 1988
The initial conceptual design configuration was completed. Baseline on-site electrodes were tested at electric utility conditions in 2 x 2 inch cells. GSB-18P cathodes were fabricated. Design of small area development stack was initiated and long lead time items ordered. Molded cooler thermal cycling tests were initiated. Equipment to evaluate alternative manifold coating processes and materials were procured.
Date:
January 1, 1988
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advanced Water-Cooled Phosphoric Acid Fuel Cell Development. Quarterly technical progress report No. 5, July--September 1988
The initial conceptual design configuration was completed. Baseline on-site electrodes were tested at electric utility conditions in 2 x 2 inch cells. GSB-18P cathodes were fabricated. Design of small area development stack was initiated and long lead time items ordered. Molded cooler thermal cycling tests were initiated. Equipment to evaluate alternative manifold coating processes and materials were procured.
Date:
December 31, 1988
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Advances in BNL's polarized ion source development
Polarized protons have been accelerated in the AGS to 22/yield/ GeV. The polarized source presently used produces 30-40 ..mu..A of /rvec char/H/sup -/ at 75-80% polarization, in 500 ..mu..s pulses, 0.5 Hz. This is three orders of magnitude lower in intensity than normal H/sup -/ operation, and higher intensities are desired. There is a program in the AGS department to develop a higher intensity source. This is a ground state atomic beam source with an atomic beam cooled to 6 K, spin selection and focusing via a superconducting solenoid (shown) or a sextupole system, and an ionizer for /rvec char/H/sup -/ production based on the charge exchange of /rvec char/H/degree/ with D/sup -/. Work is in progress on all three components, and will be described in this paper. 6 refs., 7 figs.
Date:
January 1, 1988
Creator:
Alessi, J.; DeVito, B.; Herschcovitch, A.; Kponou, A. & Meitzler, C.
Object Type:
Article
System:
The UNT Digital Library
Advances in crack-arrest technology for reactor pressure vessels
The Heavy-Section Steel Technology (HSST) Program at the Oak Ridge National Laboratory (ORNL) under the sponsorship of the US Nuclear Regulatory Commission is continuing to improve the understanding of conditions that govern the initiation, rapid propagation, arrest, and ductile tearing of cracks in reactor pressure vessel (RPV) steels. This paper describes recent advances in a coordinated effort being conducted under the HSST Program by ORNL and several subcontracting groups to develop the crack-arrest data base and the analytical tools required to construct inelastic dynamic fracture models for RPV steels. Large-scale tests are being carried out to generate crack-arrest toughness data at temperatures approaching and above the onset of Charpy upper-shelf behavior. Small- and intermediate-size specimens subjected to static and dynamic loading are being developed and tested to provide additional fracture data for RPV steels. Viscoplastic effects are being included in dynamic fracture models and computer programs and their utility validated through analyses of data from carefully controlled experiments. Recent studies are described that examine convergence problems associated with energy-based fracture parameters in viscoplastic-dynamic fracture applications. Alternative techniques that have potential for achieving convergent solutions for fracture parameters in the context of viscoplastic-dynamic models are discussed. 46 refs., 15 figs., 3 …
Date:
January 1, 1988
Creator:
Bass, B. R. & Pugh, C. E.
Object Type:
Article
System:
The UNT Digital Library
Advances in metal ion sources
Beams of metallic ion species can be produced by the ECR (electron cyclotron resonance) ion source and by the MEVVA (metal vapor vacuum arc) ion source. Although the ECR source is fundamentally a gaseous ion source, metal ion beams can be produced by introducing metallic feed material into the plasma discharge using a number of techniques. The ion charge states can be very high, which is a significant advantage to most applications. The MEVVA ion source, on the other hand, is specifically a metal ion source. It has produced metallic ion beams from virtually all the solid metallic elements at a current of typically hundreds of milliamperes; the ions produced are in general multiply ionized, but not as highly stripped as those generated in the ECR source. Although the MEVVA source at present operates in a pulsed mode with a low duty cycle (less than or equal to 1%), work is in progress to increase the duty cycle significantly. In this paper the operation and performance of the LBL ECR and MEVVA ion sources, with respect to metal ion generation, are described.
Date:
May 1, 1988
Creator:
Brown, I.G.
Object Type:
Article
System:
The UNT Digital Library
Advances in processing nuclear waste glasses
The vitrification of nuclear waste glasses is presenting unique challenges to glass technologists. On the one hand, the composition of the most important constituent of the glass batch/--/the waste/--/may vary widely. On the other hand, the vitrification process itself must be tightly controlled to ensure product quality, public safety, and process reliability. This has led to several important developments in waste vitrification technology, all aimed at improving process control. These include use of process models, use of artificial intelligence techniques, and improved control and measurement of glass redox. 19 refs., 2 figs., 2 tabs.
Date:
January 1, 1988
Creator:
Plodinec, M J
Object Type:
Article
System:
The UNT Digital Library
[Advertisement: National Coming Out Day]
An advertisement listing LGBT individuals from the Dallas community that are publicly coming out in response to National Coming Out Day and encouraging fellow LGBT peoples to do the same.
Date:
1988
Creator:
Among Friends
Object Type:
Text
System:
The UNT Digital Library
[Advertisement: National Coming Out Day]
An advertisement for National Coming Out Day, listing individuals who are publicly coming out as members of the LGBT community and encouraging closeted people to do the same.
Date:
1988
Creator:
Among Friends
Object Type:
Text
System:
The UNT Digital Library
Advisory Board to Texas Academy of Mathematics and Science
List of the members of the advisory board to the Texas Academy of Mathematics and Science, including their names, positions, addresses, and phone numbers.
Date:
1988~
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Aerated atomization of coal-water slurry fuels
In order to observe the effects of rheology on the atomization of highly viscous non-Newtonian liquids, glycerin-water solutions and cellulose-glycerin-water solutions have been atomized. In this series of tests, nozzle pressure, air-liquid ratio and liquid viscosity were altered, and the effects were observed. 14 figs.
Date:
September 30, 1988
Creator:
Buckner, H.N.; Sojka, P.E. & Lefebvre, A.H.
Object Type:
Report
System:
The UNT Digital Library