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Heating/daylighting prototype development. Phase I, Passive and Hybrid Solar Manufactured Building Project. Interim report and project status report No. 1, 1 October 1979-29 February 1980
Climatological data, both representative (typical) and extreme conditions, relevant to building energy use in Grandview, Missouri are presented. The energy-related characteristics of a particular building and its use are merged with ambient weather conditions. The graphs depict daily fluctuations in the major categories of building heating/cooling load for the experimental building (Roof Runner facility) at Butler Research Center. Data input include hourly weather and building occupancy schedules, the geometry and fixed thermal characteristics (component R-values, heat capacities, etc.) of the prototype structure, and variable conditions (status of moveable insulating shutters, HVAC operating modes, etc.). The prototype systems to be incorporated in the new Roof Runner building are shown. Both warehouse (no ceiling) and office (suspended ceiling) system types are included. The diagrams conceptually depict the heat flows in several representative operating modes, sampling the wide variety of operating conditions which will be evaluated during the testing phase of this project. Cost estimates for the designs selected for construction are provided. (MHR)
Date:
March 31, 1980
Creator:
Snyder, M.; Fraker, H.; Lindsey, L.; Braham, W.; Hallagan, W. & Huffman, J.
Object Type:
Report
System:
The UNT Digital Library
Evaluate fundamental approaches to longwall dust control. Phase III report
The overall objective of the contract is to evaluate the effectiveness of available dust control technology for double-drum shearer longwall sections in a coordinated, systematic program at a few longwall test sections and to make the results available to the entire coal mining industry. This program is investigating nine different dust control techniques. These nine subprograms encompass a broad range of dust control measures ranging from administrative controls to new hardware. They span not only presently employed methods but also those recently adopted in the United States and those proposed for the future. This report documents the Phase III effort on each of the subprograms. For clarity, the report is divided in sections by subprogram as follows: Section 2, Subprogram A - passive barriers/spray air movers for dust control; Section 3, Subprogram B - practical aspects of deep cutting; Section 4, Subprogram C - stage loader dust control; Section 5, Subprogram D - longwall automation technology; Section 6, Subprogram E - longwall application of ventilation curtains; Section 7, Subprogram F - reversed drum rotation; Section 8, Subprogram G - reduction of shield generated dust; Section 9, Subprogram H - air canopies for longwalls; and Section 10, Subprogram I - mining …
Date:
March 31, 1984
Creator:
Babbitt, C.; Bartlett, P.; Kelly, J.; Ludlow, J.; Mangolds, A.; Rajan, S. et al.
Object Type:
Report
System:
The UNT Digital Library
Investigation of mechanically hard, chemically inert antireflection coatings for photovoltaic solar modules. Final technical report, April 1, 1980-March 31, 1981
The overall objective of this program is to determine the optical properties of i-Carbon (diamond-like) films and determine if these films can be developed into antireflecting (AR) coatings for silicon solar cells. The i-C films have been produced on glass, silicon, and KCl by radio frequency (RF) plasma decomposition of the alkane gases. Films were also produced on silicon solar cells by low-energy ion beam techniques. These coatings did not perform as well as those made from hydrocarbon gases. Significant progress has been made in understanding the deposition parameters that affect the optical properties of the films. The optical constants n and k have been determined over a large range of process parameters and source gas. The degree of hydrogen incorporation in these films has been studied by SIMS analysis. It was found that the lower optically absorbing films contain more hydrogen. This hydrogen does not, however, manifest itself in fundamental C-H absorption bands in the infrared. Very efficient single-layer quarter-wave i-C AR coatings have been produced on single-crystal and SOC Si solar cells. An increase in cell efficiency of 40% over uncoated cells has been achieved.
Date:
March 31, 1981
Creator:
Moravec, T.J.
Object Type:
Report
System:
The UNT Digital Library
Advances in materials science, Metals and Ceramics Division. Triannual progress report, October 1979-January 1980
Progress is summarized concerning magnetic fusion energy materials, laser fusion energy, aluminium-air battery and vehicle, geothermal research, oil-shale research, nuclear waste management, office of basic energy sciences research, and materials research notes. (FS)
Date:
March 31, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
CsAlSi/sub 5/O/sub 12/: a possible host for /sup 137/Cs immobilization
CsAlSi/sub 5/O/sub 12/ exhibits more acid resistance than pollucite (CsAlSi/sub 2/O/sub 6/). At pH values of 1.02 and 1.40, the extraction of Cs from CsAlSi/sub 5/O/sub 12/ at 25/sup 0/C was approximately proportional to the square root of leach time. The Cs extraction at 25/sup 0/C varied as (H/sup +/)/sup 0/ /sup 36/ over the pH range of 1 to 6. Also, the Cs extraction in various brines at 300/sup 0/C/30 MPa was comparable with that for pollucite. CsAlSi/sub 5/O/sub 12/ can be crystallized at about 1000/sup 0/C from calcines if a small amount of CaO is present, but in the absence of such sintering acids, crystallization temperatures of about 1400/sup 0/C are necessary. Compatibility data were also obtained with respect to several other phases with which CsAlSi/sub 5/O/sub 12/ might be expected to coexist in tailored ceramics designed for high-level defense waste.
Date:
March 31, 1982
Creator:
Adl, T. & Vance, E.R.
Object Type:
Report
System:
The UNT Digital Library
Spatial patterns of radiological dose from wells drilled near nuclear waste repositories
This report describes methodology for assessing the spatial patterns of radiological dose to man from wells drilled near nuclear waste repositories. Descriptions of the various categories of water wells and a model of a typical aquifer are presented. The equation governing the one-dimensional flow of waste in groundwater through porous media to a well is discussed. This is followed by development of a method for constructing lines of constant dose from a well located randomly in the plane of the aquifer. An area of hazard, in which the dose to man from a well exceeds a given statuatory or recommended limit, is then defined within this dose pattern. This technique is then used to compute dose and hazard profiles for wells adjacent to a repository located in either impermeable or permeable bedded salt. The repository and geologic parameters employed in this example are taken from a Lawrence Livermore Laboratory report for which this report serves as a supporting document. Scenarios with impermeable salt involve waste entering the repository through the shaft/tunnel fracture zone and exiting through a single additional flaw (borehole). Permeable-salt scenarios involve waste escaping from the repsitory through a borehole and via interstitial flow. Calculations are performed assuming …
Date:
March 31, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Bedded-salt repository analysis. Final report
This report contains a description of an analysis of generic nuclear waste repository in bedded salt. This analysis was performed by TASC for inclusion in a major Lawrence Livermore Laboratory report to NRC; this report therefore should be viewed as providing more complete and detailed information about this analysis than was possible to include in the LLL report. The analysis is performed with the NUTRAN computer codes which are described in the report. The model to be analyzed is defined, and the results of a series of possible waste migration scenarios are presented. Several of these scenarios are used as the basis for a sensitivity analysis, and an uncertainty analysis utilizing Monte Carlo techniques is also performed. A new method for defining the consequences to users of a well drilled near the repository is also described, and results are presented based on two of the waste migration scenarios.
Date:
March 31, 1980
Creator:
Guiffre, M.S.; Kaplan, M.F.; Ensminger, D.A.; Oston, S.G. & Nalbandian, J.Y.
Object Type:
Report
System:
The UNT Digital Library
National forecast for geothermal resource exploration and development with techniques for policy analysis and resource assessment
The backgrund, structure and use of modern forecasting methods for estimating the future development of geothermal energy in the United States are documented. The forecasting instrument may be divided into two sequential submodels. The first predicts the timing and quality of future geothermal resource discoveries from an underlying resource base. This resource base represents an expansion of the widely-publicized USGS Circular 790. The second submodel forecasts the rate and extent of utilization of geothermal resource discoveries. It is based on the joint investment behavior of resource developers and potential users as statistically determined from extensive industry interviews. It is concluded that geothermal resource development, especially for electric power development, will play an increasingly significant role in meeting US energy demands over the next 2 decades. Depending on the extent of R and D achievements in related areas of geosciences and technology, expected geothermal power development will reach between 7700 and 17300 Mwe by the year 2000. This represents between 8 and 18% of the expected electric energy demand (GWh) in western and northwestern states.
Date:
March 31, 1982
Creator:
Cassel, T. A. V.; Shimamoto, G. T.; Amundsen, C. B.; Blair, P. D.; Finan, W. F.; Smith, M. R. et al.
Object Type:
Report
System:
The UNT Digital Library
Thermoelectric materials evaluation program spring design to minimize load relaxation
The recommended spring material for use in thermoelectric modules is either Inconel x or Elgiloy based on their excellent performance and availability. The stress level for generator applications is 75,000 psi. (FS)
Date:
March 31, 1980
Creator:
Grimm, F.R.
Object Type:
Report
System:
The UNT Digital Library
Development of high efficiency cascade solar cells. Quarterly technical progress report No. 3
Progress is reported in the following areas: AlGaAsSb/GaAsSb materials development, GaInP materials development via VPE, GaAlAs/GaAs cell development, and OM/CVD studies. Spectral response, V-I characteristics, and electron microprobe analysis results are presented. (WHK)
Date:
March 31, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Stability of ceramic waste forms in potential repository environments: a review
Most scenarios for geologic disposal of high-level nuclear waste include the eventual intrusion of groundwater into the repository. Reactions in the system and eventual release of the radionuclides, if any, will be controlled by the chemistry of the groundwater, the surrounding rock, the waste form, and any engineered barrier materials that are present, as well as by the temperature and pressure of the system. This report is a compilation and evaluation of the work completed to date on interactions within the waste-form/host-rock/groundwater system at various points in its lifetime. General results from leaching experiments are presented as a basis for comparison. The factors involved in studying the complete system are discussed so that future research may avoid some of the oversights of past research. Although relatively little hard data on prototype waste-form/repository-system interactions exist at this time, the available data and their implications are discussed. Sorption studies and models for predicting radionuclide migration are also presented, again with a study of the factors involved.
Date:
March 31, 1982
Creator:
Johnston, R. J. & Palmer, R. A.
Object Type:
Report
System:
The UNT Digital Library
Scattering of waves from a staggered difference scheme on a variable grid
We show experimentally that for a staggered scheme on a variable grid the numerical solution of the wave equation exhibits scattering of waves even when the grid varies slowly and the waves are smooth. We also show that this scattering is predicted very well by a modified equation, which thus serves as a backward error analysis.
Date:
March 31, 1982
Creator:
Chin, R.C.Y. & Hedstrom, G.W.
Object Type:
Article
System:
The UNT Digital Library
Nevada geothermal commercialization planning. Quarterly progress report, January 1, 1980-March 31, 1980
Site specific development plans are discussed for Caliente district heating and Winnemucca ethanol production. Outreach activities are listed. (MHR)
Date:
March 31, 1980
Creator:
Pugsley, M.
Object Type:
Report
System:
The UNT Digital Library
Imperial County geothermal development. Quarterly report, January 1-March 31, 1982
The activities of the Geothermal Office are reported including: important geothermal events, geothermal waste disposal, grant applications to the California Energy Commission, the planned geothermal development meeting, and other geothermal planning activities. The activities of the Geothermal Planner include processing of applications for geothermal permits, processing of environmental impact reports, and other geothermal planning activities. The progress on the VTN Corporation direct heat study is discussed.
Date:
March 31, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Improved generator for use with low-speed rotating machines. Final report
The goal of this project was to construct a low-technology, maintenance-free dc electrical generator suited for use with low-speed rotating machines such as windmills or waterwheels. The generator consists of permanent magnets affixed to the circumference of the rotating device, and stationary coils mounted on a semicircular frame. As the device rotates, the magnets move past the coils and magnetically induce an ac voltage in the coils. This voltage is rectified and stored in a battery. No gears, belts, or brushes are used, so the generator operates quietly and without maintenance. The purpose of mounting the magnets at the circumference of the rotating device is to achieve high relative velocities between magnets and coils even at slow rotations, in the hope of extracting energy from very light winds or slowly flowing water. Such a generator was constructed as part of a ten-foot-diameter windmill to test the concept. The generator easily reaches charging voltages at low speeds, and operates quietly without mechanical wear. But the charging current is very low in comparison to a wind turbine of conventional design. The experiment allows fundamental design problems to be identified.
Date:
March 31, 1983
Creator:
Goerz, J.W.
Object Type:
Report
System:
The UNT Digital Library
Geothermal Project. Final report
The project was designed to take 95/sup 0/F water from an existing well and process it through a heat exchanger carrying supply water for our boiler make up and domestic hot water systems. The temperature of this water runs from 55/sup 0/F to 65/sup 0/F. In operation it was possible to raise the temperature of this water an average of approximately 12/sup 0/F. The amount of energy captured was recorded and it was found that one can capture approximately 199 x 10/sup 6/ Btu/Mo. Using current energy costs and a boiler efficiency factor of .8 a potential annual savings of approximately $11,104/year was calculated. The total cost of the project was $31,893.68. Using these figures a simple pay back period of 2.9 years was calculated.
Date:
March 31, 1983
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[Four Pages from Leadership News, March 1988]
Four pages from a newsletter including an article discussing various schools with dedicated math and science programs, including the Texas Academy of Mathematics and Science.
Date:
March 31, 1988
Creator:
unknown
Object Type:
Clipping
System:
The UNT Digital Library
[News Clip: Honduras (Molina)]
Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story by reporter Dan Molina about the impact of members of a largely Hispanic unit of the Texas National Guard in San Antonio leaving for training exercises in Honduras. This story aired at 10:00 P.M.
Date:
March 31, 1985
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 80, No. 13, Ed. 1 Thursday, March 31, 1988
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
March 31, 1988
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 98, No. 13, Ed. 1 Thursday, March 31, 1988
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
March 31, 1988
Creator:
Ezzell, Ben & Ezzell, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Organic materials for second harmonic generation. Final report
Materials were chosen by screening the Cambridge Crystallographic Index for new noncentrosymmetric crystalline compounds, by screening commercially available materials or by synthesis of unique new substances. Measurements were then made on the powder form of these materials. Langmuir-Blodgett films were deposited and studied. In addition to the above studies, a computer program was developed to calculate (hyper) polarizabilities of organic molecules and thus aid in the selection of materials for testing. The nonlinear molecules have been divided into three classes according to absorption cutoff: 400 to 500 nm, 300 to 400 nm, and 200 to 300 nm. 108 refs., 7 tabs. (WRF)
Date:
March 31, 1985
Creator:
Twieg, R.J. (comp.)
Object Type:
Report
System:
The UNT Digital Library
Design considerations for vehicular fuel cell power plants
Fuel cells show great promise as an efficient, nonpolluting vehicular power source that can operate on nonpetroleum fuel. As with other power sources, design tradeoffs can be made that either improve vehicle performance or reduce the size and cost of the fuel cell power system. To evaluate some of these tradeoffs, a number of phosphoric acid fuel cell power plant designs have been studied to determine the performance level they would provide, both for a compact passenger vehicle and a 40-ft city bus. The fuel is steam reformed methanol. The analyses indicate that 1978 fuel cell technology can provide a 22 to 50% improvement in fuel economy over the 1980 EPA estimate for the conventionally powered General Motors X car. With this technology the city bus can meet the DOT acceleration, gradability, and top speed requirements. A reasonable advance in fuel cell technology improves performance and fuel consumption of both vehicles substantially.
Date:
March 31, 1981
Creator:
Lynn, D. K.; McCormick, J. B.; Bobbett, R. E.; Srinivasan, S. & Huff, J. R.
Object Type:
Article
System:
The UNT Digital Library
Waste form/rock interaction leaching study using PNL 76-68 glass beads and Umtanum basalt. Part I
A 440-day single-pass continuous-flow leaching experiment was conducted at LLNL from September 1980 to December 1981. The data obtained for only one-third of the experiment are presented. The laboratory and data analysis of the remaining portion is still in progress at this time and a second report will follow at the end of FY83. This report concerns itself with the study of PNL 76-68 glass beads interacting with crushed uranium flow basalt and a simulated basalt groundwater under controlled conditions of temperature (25/sup 0/C and 75/sup 0/C) and flow rate (1, 10, and 300 ml/day). The main purpose of the experiment was to determine the absorption on basalt of Pu, Np, and some of the stable elements such as B, Mo, U, and Cs, as they were leached from the glass beads. Results are presented, as incremental and cumulative leach rates and sorption rates have been calculated for Pu, Np, B, Mo and U. also sorption profiles as a function of temperature and flow rate are graphically shown for Pu, Np, and U.
Date:
March 31, 1983
Creator:
Bazan, F.; Rego, J.; Failor, R. & Coles, D.
Object Type:
Report
System:
The UNT Digital Library
Value of the energy data base
An assessment was made of the Energy Data Base (EDB) of the Department of Energy's Technical Information Center (TIC). As the major resource containing access information to the world's energy literature, EDB products and services are used extensively by energy researchers to identify journal articles, technical reports and other items of potential utility in their work. The approach taken to assessing value begins with the measurement of extent of use of the EDB. Apparent value is measured in terms of willingness to pay. Consequential value is measured in terms of effect - for searching, the cost of reading which results; and for reading, the savings which result from the application of the information obtained in reading. Resulting estimates of value reflect value to the searchers, the reader, and the reader's organization or funding source. A survey of the 60,000 scientists and eingineers funded by the DOE shows that annually they read about 7.1 million journal articles and 6.6 million technical reports. A wide range of savings values were reported for one-fourth of all article readings and three-fourths of all report readings. There was an average savings of $590 per reading of all articles; there was an average savings of $1280 …
Date:
March 31, 1982
Creator:
King, D.W.; Griffiths, J.M.; Roderer, N.K. & Wiederkehr, R.R.V.
Object Type:
Report
System:
The UNT Digital Library