UNT Libraries Government Documents Department - 34 Matching Results

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Parcperdue geopressure-geothermal project. Study a geopressured reservoir by drilling and producing a well in a limited geopressured water sand. Final technical report, September 28, 1979-December 31, 1983

Description: The behavior of geopressured reservoirs was investigated by drilling and producing a well in small, well defined, geopressured reservoir; and performing detailed pressure transient analysis together with geological, geophysical, chemical, and physical studies. The Dow-DOE L. R. Sweezy No. 1 well was drilled to a depth of 13,600 feet in Parcperdue field, just south of Lafayette, Louisiana, and began production in April, 1982. The production zone was a poorly consolidated sandstone which constant… more
Date: January 15, 1984
Creator: Hamilton, J.R. & Stanley, J.G. (eds.)
open access

Photovoltaic power conditioning subsystem: state of the art and development opportunities

Description: Photovoltaic sytems, the state of the art of power conditioning subsystem components, and the design and operational interaction between photovoltaic systems and hot utilities are detailed in this document. Major technical issues relating to the design and development of power conditioning systems for photovoltaic application are also considered, including: (1) standards, guidelines, and specifications; (2) cost-effective hardware design; (3) impact of advanced components on power conditioning … more
Date: January 15, 1984
Creator: Krauthamer, S.; Bahrami, K.; Das, R.; Macie, T. & Rippel, W.
open access

Summary of photovoltaic system performance models

Description: The purpose of this study is to provide a detailed overview of photovoltaics (PV) performance modeling capabilities that have been developed during recent years for analyzing PV system and component design and policy issues. A set of 10 performance models have been selected which span a representative range of capabilities from generalized first-order calculations to highly specialized electrical network simulations. A set of performance modeling topics and characteristics is defined and used t… more
Date: January 15, 1984
Creator: Smith, J. H. & Reiter, L. J.
open access

CONC/11: a computer program for calculating the performance of dish-type solar thermal collectors and power systems

Description: CONC/11 is a computer program designed for calculating the performance of dish-type solar thermal collectors and power systems. It is intended to aid the system or collector designer in evaluating the performance to be expected with possible design alternatives. From design or test data on the characteristics of the various subsystems, CONC/11 calculates the efficiencies of the collector and the overall power system as functions of the receiver temperature for a specified insolation. If desired… more
Date: February 15, 1984
Creator: Jaffe, L. D.
open access

Ethylene Dibromide

Description: Much attention has recently been focused on the chemical ethylene dibromide (EDB). This chemical has been widely used in leaded gasoline, and has also been used to treat grains, citrus and other crops. It has been found in foods and in groundwater. This paper examines the possible health effects of exposure to EDB, as well as its regulation. The possible health effects and regulation of various chemical and physical alternatives to EDB are also examined. This paper concludes with some policy co… more
Date: February 15, 1984
Creator: Simpson, Michael M.
open access

Stress studies in EFG. Quarterly progress report, October 1-December 31, 1983

Description: Stress analysis at Harvard University has examined the implication of non-zero interface stresses on model predictions. Stress distributions at distances greater than about 1 mm from the interface are shown to be independent of the interface stress at high creep intensities, and the predictions based on zero initial stress can be used with confidence. Numerical models for growth dynamics developed at MIT are compared with experimental data on t-V relationships and on interface shape obtained fr… more
Date: February 15, 1984
Creator: Kalejs, J.P.
open access

X-ray diffraction and scattering studies of coal constituents. Final technical report, January 1-December 31, 1983

Description: The general objective of this work has been to use x-ray diffraction and scattering to examine whole coals, coal macerals and minerals in order to perform the following studies: (1) to identify and explain differences in vitrinites and framboids from various coals; (2) to correlate differences with basic coal compositions and properties; and (3) to determine the systematic variability in the micro compositional variation of macerals. The accomplishments have been: (a) the development of the Fou… more
Date: March 15, 1984
Creator: Pavlovic, A. S. & Renton, J. T.
open access

Battery charger and state of charge indicator. Final report

Description: The battery charger has a full-wave rectifier in series with a transformer isolated 20 kHz dc-dc converter with high frequency switches which are programmed to actively shape the input ac line current to be a mirror image of the ac line voltage. The power circuit is capable of operating at 2 kW peak and 1 kW average power. The BC/SCI has two major subsystems: (1) the battery charger power electronics with its controls; and (2) a microcomputer subsystem which is used to acquire battery terminal … more
Date: April 15, 1984
Creator: Latos, T.S.
open access

ECUT: Energy Conversion and Utilization Technologies Program. Biocatalysis Research Activity annual report, FY 1983

Description: The activities of the Biocatalysis Research Activity during FY 1983 were organized into the Biocatalysis and Molecular Modeling work elements and a supporting planning and analysis function. In the biocatalysis work element, progress was made in developing a method for stabilizing genetically engineered traits in microorganisms, refining a technique for monitoring cells that have been genetically engineered, identifying strains of fungi for highly efficient preprocessing of biomass for biocatal… more
Date: April 15, 1984
open access

Kinematic Stirling engine as an energy conversion subsystem for paraboloidal dish solar thermal power plants

Description: The potential of a suitably designed and economically manufactured Stirling engine as the energy conversion subsystem of a paraboloidal dish-Stirling solar thermal power module has been estimated. Results obtained by elementary cycle analyses have been shown to match quite well the performance characteristics of an advanced kinematic Stirling engine, the United Stirling P-40, as established by current prototypes of the engine and by a more sophisticated analytic model of its advanced derivative… more
Date: April 15, 1984
Creator: Bowyer, J. M.
open access

Performance of the Lester battery charger in electric vehicles

Description: Tests were performed on an improved battery charger manufactured by Lester Electrical of Nebraska, Inc. This charger was installed in a South Coast Technology Rabbit No. 4, which was equipped with lead-acid batteries produced by ESB Company. The primary purpose of the testing was to develop test methodologies for battery charger evaluation. To this end tests were developed to characterize the charger in terms of its charge algorithm and to assess the effects of battery initial state of charge a… more
Date: April 15, 1984
Creator: Vivian, H. C. & Bryant, J. A.
open access

Solar parabolic dish technology annual evaluation report. Fiscal year 1983

Description: This report summarizes the activities of the JPL Solar Thermal Power Systems Parabolic Dish Project for FY 1983. Included are discussions on designs of module development including their concentrator, receiver, and power conversion subsystem together with a separate discussion of concentrator development. Analyses and test results, along with progress on field tests, Small Community Experiment system development, and tests at the Parabolic Dish Test Site are also included.
Date: April 15, 1984
open access

Beam injection in the TMX-U central cell

Description: Results pertaining to the recently modified beam-injection arrangement in the central cell of TMX-U are presented here. These modifications followed our observation that beam atoms injected perpendicular to the magnetic axis between the first two magnet-coil gaps give rise to trapped ions with midplane pitch angles lying in the intervals 68/sup 0/ < theta < 78/sup 0/ and 59/sup 0/ < theta < 65/sup 0/. These pitch-angle intervals are similar in value to the earlier arrangement of beams injected … more
Date: June 15, 1984
Creator: Turner, W.C.
open access

Calculations to assist in a new Hiroshima yield estimate. Final report, August 19-December 31, 1983

Description: This report describes calculations and analysis performed in an attempt to provide a new estimate for the yield of the Hiroshima weapon. Newly discovered meteorological data was adapted for use in one- and two-dimensional hydrodynamic codes, and a series of calculations was then run for different values of yield. The objective was to determine what yield produced an overpressure record which could best be correlated with an actual trace measured at a parachute-dropped canister. Altitude of the … more
Date: June 15, 1984
Creator: Kennedy, L.W.; Roth, L.A. & Needham, C.E.
open access

Dissolution of plutonium oxide in nitric acid at high hydrofluoric acid concentrations

Description: The dissolution of plutonium dioxide in nitirc acid (HNO/sub 3/) at high hydrofluoric acid (HF) concentrations has been investigated. Dissolution rate curves were obtained using 12M HNO/sub 3/ and HF at concentrations varying from 0.05 to 1.0 molar. The dissolution rate increased with HF concentration up to 0.2M and then decreased at higher concentrations. There was very little plutonium dissolved at 0.7 and 1.0M HF because of the formation of insoluble PuF/sub 4/. Various oxidizing agents were… more
Date: June 15, 1984
Creator: Kazanjian, A.R. & Stevens, J.R.
open access

Event Parameters - Fixed Target

Description: This subgroup has focussed on detectors for fixed target experiments which have full azimuthal coverage. The general scope of the working group was to consider (1) the configuration of an idealized detector, and (2) various configurations of practical detectors that could be implemented on a relatively short time scale. The second category includes possible upgrades and modifications of existing experimental facilities. Beams of both 15 GeV/A sulphur at the AGS and 200 GeV/A oxygen at the SPS w… more
Date: June 15, 1984
Creator: Poskanzer, A.; Ritter, H. G.; Ludewigt, B.; Foley, K.; Borenstein, S.; Platner, E. et al.
open access

Hazards Control Department annual technology review, 1983

Description: This report presents research results in the areas of industrial hygiene, radiation protection, fire safety, and instrument development. Items have been individually abstracted. (ACR)
Date: June 15, 1984
Creator: Griffith, R. V.
open access

Nomographic methodology for use in performance trade-off studies of parabolic dish solar power modules

Description: A simple graphical method has been developed to undertake technical design trade-off studies for individual parabolic dish modules comprising a two-axis tracking parabolic dish with a cavity receiver and power conversion assembly at the focal point. The results of these technical studies can then be used in performing the techno-economic analyses required for determining appropriate subsystem sizing. Selected graphs that characterize the performance of subsystems within the module have been arr… more
Date: June 15, 1984
Creator: Selcuk, M. K. & Fujita, T.
open access

Survey of manufacturers of high-performance heat engines adaptable to solar applications

Description: This report summarizes the results of an industry survey made during the summer of 1983. The survey was initiated in order to develop an information base on advanced engines that could be used in the solar thermal dish-electric program. Questionnaires inviting responses were sent to 39 companies known to manufacture or integrate externally heated engines. Follow-up telephone communication ensured uniformity of response.
Date: June 15, 1984
Creator: Stine, W. B.
open access

The solubility of uranium hexafluoride in perfluoroethers

Description: The polyperfluoroethers are compatible with uranium hexafluoride (UF/sub 6/) and are suitable for use in diffusion pumps and in mechanical vacuum pumps which rely on oil as both the lubricant and the seal. The UF/sub 6/ is soluble in all fluids with which it is compatible. Because a number of vacuum pumps in the BOP facilities of the GCEP plant employ these perfluoroether oils as the working fluid and have oil chambers which are large, questions have been raised as to the relationships governin… more
Date: July 15, 1984
Creator: Barber, E. J.
open access

Stress studies in EFG. Quarterly progress report, January 1, 1984-March 31, 1984

Description: Four-point bending studies have been continued to compare primary creep response of FZ and CZ silicon above 1200/sup 0/C. Results suggest that silicon can be treated as a completely plastic solid in the temperature range 1200 to 1400/sup 0/C in its response to thermal stress generated during sheet growth. In the stress range of 5 to 15 MPa, the strain rate dependence on stress is epsilon approx. sigma/sup 10/, and appears to be essentially temperature independent. Work is underway to compare st… more
Date: July 15, 1984
Creator: Kalejs, J.P.
open access

Stress studies in EFG. Quarterly progress report, April 1-June 30, 1984

Description: Electrical characterization of defects induced in FZ and CZ silicon stress in four-point bending above 1200/sup 0/C has been started. Techniques to study electrical activity that will permit correlation of defect activity with diffusion length and with room and low temperature EBIC are being developed. Preliminary characterization of defects in ribbon grown at very low speeds of less than 1 cm/min shows that the dislocation density is very low over significant regions of cross section, while re… more
Date: August 15, 1984
open access

Overcoring and calibration of IRAD GAGE stressmeters at the Spent Fuel Test in Climax granite

Description: IRAD GAGE vibrating-wire stressmeters were installed in the Spent Fuel Facility at the Nevada Test Site to measure the change in in-situ stress during the Spent Fuel Test-Climax (SFT-C). Although extensive pre-installation laboratory tests were conducted, they were generic in nature. Unfortunately the degree of gage-rock contact has a strong influence on gage sensitivity and cannot be predicted before installation. This report discusses the results of removing a cylindrical section of rock and … more
Date: September 15, 1984
Creator: Mao, N.
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